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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-16 12:15:43 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-16 12:15:43 -0400
commit0f6e0e8448a16d8d22119ce91d8dd24b44865b51 (patch)
tree7c295c02db035fc6a0b867465911a2bc9dc6b1ef
parent0d2ecee2bdb2a19d04bc5cefac0f86e790f1aad4 (diff)
parenta002951c97ff8da49938c982a4c236bf2fafdc9f (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (33 commits) AppArmor: kill unused macros in lsm.c AppArmor: cleanup generated files correctly KEYS: Add an iovec version of KEYCTL_INSTANTIATE KEYS: Add a new keyctl op to reject a key with a specified error code KEYS: Add a key type op to permit the key description to be vetted KEYS: Add an RCU payload dereference macro AppArmor: Cleanup make file to remove cruft and make it easier to read SELinux: implement the new sb_remount LSM hook LSM: Pass -o remount options to the LSM SELinux: Compute SID for the newly created socket SELinux: Socket retains creator role and MLS attribute SELinux: Auto-generate security_is_socket_class TOMOYO: Fix memory leak upon file open. Revert "selinux: simplify ioctl checking" selinux: drop unused packet flow permissions selinux: Fix packet forwarding checks on postrouting selinux: Fix wrong checks for selinux_policycap_netpeer selinux: Fix check for xfrm selinux context algorithm ima: remove unnecessary call to ima_must_measure IMA: remove IMA imbalance checking ...
-rw-r--r--Documentation/keys-request-key.txt9
-rw-r--r--Documentation/keys.txt28
-rw-r--r--arch/x86/Kconfig5
-rw-r--r--fs/btrfs/inode.c13
-rw-r--r--fs/btrfs/xattr.c6
-rw-r--r--fs/btrfs/xattr.h3
-rw-r--r--fs/cachefiles/namei.c52
-rw-r--r--fs/ext2/ext2.h2
-rw-r--r--fs/ext2/ialloc.c5
-rw-r--r--fs/ext2/namei.c8
-rw-r--r--fs/ext2/xattr.h6
-rw-r--r--fs/ext2/xattr_security.c5
-rw-r--r--fs/ext3/ialloc.c5
-rw-r--r--fs/ext3/namei.c8
-rw-r--r--fs/ext3/xattr.h4
-rw-r--r--fs/ext3/xattr_security.c5
-rw-r--r--fs/ext4/ialloc.c2
-rw-r--r--fs/ext4/xattr.h4
-rw-r--r--fs/ext4/xattr_security.c5
-rw-r--r--fs/file_table.c5
-rw-r--r--fs/gfs2/inode.c7
-rw-r--r--fs/jffs2/dir.c9
-rw-r--r--fs/jffs2/nodelist.h2
-rw-r--r--fs/jffs2/security.c5
-rw-r--r--fs/jffs2/write.c18
-rw-r--r--fs/jffs2/xattr.h5
-rw-r--r--fs/jfs/jfs_xattr.h5
-rw-r--r--fs/jfs/namei.c8
-rw-r--r--fs/jfs/xattr.c6
-rw-r--r--fs/namespace.c4
-rw-r--r--fs/ocfs2/namei.c4
-rw-r--r--fs/ocfs2/refcounttree.c3
-rw-r--r--fs/ocfs2/xattr.c10
-rw-r--r--fs/ocfs2/xattr.h4
-rw-r--r--fs/open.c3
-rw-r--r--fs/proc/proc_sysctl.c1
-rw-r--r--fs/reiserfs/namei.c9
-rw-r--r--fs/reiserfs/xattr_security.c3
-rw-r--r--fs/xfs/linux-2.6/xfs_iops.c9
-rw-r--r--include/linux/ext3_fs.h3
-rw-r--r--include/linux/fs.h23
-rw-r--r--include/linux/ima.h6
-rw-r--r--include/linux/key-type.h14
-rw-r--r--include/linux/key.h5
-rw-r--r--include/linux/keyctl.h2
-rw-r--r--include/linux/reiserfs_xattr.h2
-rw-r--r--include/linux/security.h35
-rw-r--r--include/linux/xattr.h2
-rw-r--r--kernel/sysctl.c5
-rw-r--r--mm/shmem.c9
-rw-r--r--net/rxrpc/ar-key.c19
-rw-r--r--scripts/selinux/genheaders/genheaders.c20
-rw-r--r--security/apparmor/Makefile38
-rw-r--r--security/apparmor/lsm.c2
-rw-r--r--security/capability.c15
-rw-r--r--security/integrity/ima/ima.h3
-rw-r--r--security/integrity/ima/ima_api.c13
-rw-r--r--security/integrity/ima/ima_iint.c5
-rw-r--r--security/integrity/ima/ima_main.c136
-rw-r--r--security/keys/compat.c50
-rw-r--r--security/keys/encrypted.c3
-rw-r--r--security/keys/internal.h8
-rw-r--r--security/keys/key.c27
-rw-r--r--security/keys/keyctl.c143
-rw-r--r--security/keys/keyring.c4
-rw-r--r--security/keys/request_key.c2
-rw-r--r--security/keys/trusted.c3
-rw-r--r--security/keys/user_defined.c3
-rw-r--r--security/security.c19
-rw-r--r--security/selinux/hooks.c350
-rw-r--r--security/selinux/include/classmap.h7
-rw-r--r--security/selinux/include/security.h8
-rw-r--r--security/selinux/ss/avtab.h23
-rw-r--r--security/selinux/ss/ebitmap.h1
-rw-r--r--security/selinux/ss/mls.c5
-rw-r--r--security/selinux/ss/mls.h3
-rw-r--r--security/selinux/ss/policydb.c130
-rw-r--r--security/selinux/ss/policydb.h14
-rw-r--r--security/selinux/ss/services.c73
-rw-r--r--security/selinux/xfrm.c2
-rw-r--r--security/smack/smack.h17
-rw-r--r--security/smack/smack_access.c52
-rw-r--r--security/smack/smack_lsm.c287
-rw-r--r--security/smack/smackfs.c370
-rw-r--r--security/tomoyo/file.c5
85 files changed, 1549 insertions, 712 deletions
diff --git a/Documentation/keys-request-key.txt b/Documentation/keys-request-key.txt
index 09b55e461740..69686ad12c66 100644
--- a/Documentation/keys-request-key.txt
+++ b/Documentation/keys-request-key.txt
@@ -127,14 +127,15 @@ This is because process A's keyrings can't simply be attached to
127of them, and (b) it requires the same UID/GID/Groups all the way through. 127of them, and (b) it requires the same UID/GID/Groups all the way through.
128 128
129 129
130====================== 130====================================
131NEGATIVE INSTANTIATION 131NEGATIVE INSTANTIATION AND REJECTION
132====================== 132====================================
133 133
134Rather than instantiating a key, it is possible for the possessor of an 134Rather than instantiating a key, it is possible for the possessor of an
135authorisation key to negatively instantiate a key that's under construction. 135authorisation key to negatively instantiate a key that's under construction.
136This is a short duration placeholder that causes any attempt at re-requesting 136This is a short duration placeholder that causes any attempt at re-requesting
137the key whilst it exists to fail with error ENOKEY. 137the key whilst it exists to fail with error ENOKEY if negated or the specified
138error if rejected.
138 139
139This is provided to prevent excessive repeated spawning of /sbin/request-key 140This is provided to prevent excessive repeated spawning of /sbin/request-key
140processes for a key that will never be obtainable. 141processes for a key that will never be obtainable.
diff --git a/Documentation/keys.txt b/Documentation/keys.txt
index e4dbbdb1bd96..6523a9e6f293 100644
--- a/Documentation/keys.txt
+++ b/Documentation/keys.txt
@@ -637,6 +637,9 @@ The keyctl syscall functions are:
637 long keyctl(KEYCTL_INSTANTIATE, key_serial_t key, 637 long keyctl(KEYCTL_INSTANTIATE, key_serial_t key,
638 const void *payload, size_t plen, 638 const void *payload, size_t plen,
639 key_serial_t keyring); 639 key_serial_t keyring);
640 long keyctl(KEYCTL_INSTANTIATE_IOV, key_serial_t key,
641 const struct iovec *payload_iov, unsigned ioc,
642 key_serial_t keyring);
640 643
641 If the kernel calls back to userspace to complete the instantiation of a 644 If the kernel calls back to userspace to complete the instantiation of a
642 key, userspace should use this call to supply data for the key before the 645 key, userspace should use this call to supply data for the key before the
@@ -652,11 +655,16 @@ The keyctl syscall functions are:
652 655
653 The payload and plen arguments describe the payload data as for add_key(). 656 The payload and plen arguments describe the payload data as for add_key().
654 657
658 The payload_iov and ioc arguments describe the payload data in an iovec
659 array instead of a single buffer.
660
655 661
656 (*) Negatively instantiate a partially constructed key. 662 (*) Negatively instantiate a partially constructed key.
657 663
658 long keyctl(KEYCTL_NEGATE, key_serial_t key, 664 long keyctl(KEYCTL_NEGATE, key_serial_t key,
659 unsigned timeout, key_serial_t keyring); 665 unsigned timeout, key_serial_t keyring);
666 long keyctl(KEYCTL_REJECT, key_serial_t key,
667 unsigned timeout, unsigned error, key_serial_t keyring);
660 668
661 If the kernel calls back to userspace to complete the instantiation of a 669 If the kernel calls back to userspace to complete the instantiation of a
662 key, userspace should use this call mark the key as negative before the 670 key, userspace should use this call mark the key as negative before the
@@ -669,6 +677,10 @@ The keyctl syscall functions are:
669 that keyring, however all the constraints applying in KEYCTL_LINK apply in 677 that keyring, however all the constraints applying in KEYCTL_LINK apply in
670 this case too. 678 this case too.
671 679
680 If the key is rejected, future searches for it will return the specified
681 error code until the rejected key expires. Negating the key is the same
682 as rejecting the key with ENOKEY as the error code.
683
672 684
673 (*) Set the default request-key destination keyring. 685 (*) Set the default request-key destination keyring.
674 686
@@ -1062,6 +1074,13 @@ The structure has a number of fields, some of which are mandatory:
1062 viable. 1074 viable.
1063 1075
1064 1076
1077 (*) int (*vet_description)(const char *description);
1078
1079 This optional method is called to vet a key description. If the key type
1080 doesn't approve of the key description, it may return an error, otherwise
1081 it should return 0.
1082
1083
1065 (*) int (*instantiate)(struct key *key, const void *data, size_t datalen); 1084 (*) int (*instantiate)(struct key *key, const void *data, size_t datalen);
1066 1085
1067 This method is called to attach a payload to a key during construction. 1086 This method is called to attach a payload to a key during construction.
@@ -1231,10 +1250,11 @@ hand the request off to (perhaps a path held in placed in another key by, for
1231example, the KDE desktop manager). 1250example, the KDE desktop manager).
1232 1251
1233The program (or whatever it calls) should finish construction of the key by 1252The program (or whatever it calls) should finish construction of the key by
1234calling KEYCTL_INSTANTIATE, which also permits it to cache the key in one of 1253calling KEYCTL_INSTANTIATE or KEYCTL_INSTANTIATE_IOV, which also permits it to
1235the keyrings (probably the session ring) before returning. Alternatively, the 1254cache the key in one of the keyrings (probably the session ring) before
1236key can be marked as negative with KEYCTL_NEGATE; this also permits the key to 1255returning. Alternatively, the key can be marked as negative with KEYCTL_NEGATE
1237be cached in one of the keyrings. 1256or KEYCTL_REJECT; this also permits the key to be cached in one of the
1257keyrings.
1238 1258
1239If it returns with the key remaining in the unconstructed state, the key will 1259If it returns with the key remaining in the unconstructed state, the key will
1240be marked as being negative, it will be added to the session keyring, and an 1260be marked as being negative, it will be added to the session keyring, and an
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f8958b01b975..fe6a5f8c9568 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2130,6 +2130,11 @@ config SYSVIPC_COMPAT
2130 def_bool y 2130 def_bool y
2131 depends on COMPAT && SYSVIPC 2131 depends on COMPAT && SYSVIPC
2132 2132
2133config KEYS_COMPAT
2134 bool
2135 depends on COMPAT && KEYS
2136 default y
2137
2133endmenu 2138endmenu
2134 2139
2135 2140
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 4a0107e18747..512c3d1da083 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -90,13 +90,14 @@ static noinline int cow_file_range(struct inode *inode,
90 unsigned long *nr_written, int unlock); 90 unsigned long *nr_written, int unlock);
91 91
92static int btrfs_init_inode_security(struct btrfs_trans_handle *trans, 92static int btrfs_init_inode_security(struct btrfs_trans_handle *trans,
93 struct inode *inode, struct inode *dir) 93 struct inode *inode, struct inode *dir,
94 const struct qstr *qstr)
94{ 95{
95 int err; 96 int err;
96 97
97 err = btrfs_init_acl(trans, inode, dir); 98 err = btrfs_init_acl(trans, inode, dir);
98 if (!err) 99 if (!err)
99 err = btrfs_xattr_security_init(trans, inode, dir); 100 err = btrfs_xattr_security_init(trans, inode, dir, qstr);
100 return err; 101 return err;
101} 102}
102 103
@@ -4704,7 +4705,7 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
4704 if (IS_ERR(inode)) 4705 if (IS_ERR(inode))
4705 goto out_unlock; 4706 goto out_unlock;
4706 4707
4707 err = btrfs_init_inode_security(trans, inode, dir); 4708 err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
4708 if (err) { 4709 if (err) {
4709 drop_inode = 1; 4710 drop_inode = 1;
4710 goto out_unlock; 4711 goto out_unlock;
@@ -4765,7 +4766,7 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
4765 if (IS_ERR(inode)) 4766 if (IS_ERR(inode))
4766 goto out_unlock; 4767 goto out_unlock;
4767 4768
4768 err = btrfs_init_inode_security(trans, inode, dir); 4769 err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
4769 if (err) { 4770 if (err) {
4770 drop_inode = 1; 4771 drop_inode = 1;
4771 goto out_unlock; 4772 goto out_unlock;
@@ -4891,7 +4892,7 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
4891 4892
4892 drop_on_err = 1; 4893 drop_on_err = 1;
4893 4894
4894 err = btrfs_init_inode_security(trans, inode, dir); 4895 err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
4895 if (err) 4896 if (err)
4896 goto out_fail; 4897 goto out_fail;
4897 4898
@@ -7103,7 +7104,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
7103 if (IS_ERR(inode)) 7104 if (IS_ERR(inode))
7104 goto out_unlock; 7105 goto out_unlock;
7105 7106
7106 err = btrfs_init_inode_security(trans, inode, dir); 7107 err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
7107 if (err) { 7108 if (err) {
7108 drop_inode = 1; 7109 drop_inode = 1;
7109 goto out_unlock; 7110 goto out_unlock;
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index a5776531dc2b..d779cefcfd7d 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -370,7 +370,8 @@ int btrfs_removexattr(struct dentry *dentry, const char *name)
370} 370}
371 371
372int btrfs_xattr_security_init(struct btrfs_trans_handle *trans, 372int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
373 struct inode *inode, struct inode *dir) 373 struct inode *inode, struct inode *dir,
374 const struct qstr *qstr)
374{ 375{
375 int err; 376 int err;
376 size_t len; 377 size_t len;
@@ -378,7 +379,8 @@ int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
378 char *suffix; 379 char *suffix;
379 char *name; 380 char *name;
380 381
381 err = security_inode_init_security(inode, dir, &suffix, &value, &len); 382 err = security_inode_init_security(inode, dir, qstr, &suffix, &value,
383 &len);
382 if (err) { 384 if (err) {
383 if (err == -EOPNOTSUPP) 385 if (err == -EOPNOTSUPP)
384 return 0; 386 return 0;
diff --git a/fs/btrfs/xattr.h b/fs/btrfs/xattr.h
index 7a43fd640bbb..b3cc8039134b 100644
--- a/fs/btrfs/xattr.h
+++ b/fs/btrfs/xattr.h
@@ -37,6 +37,7 @@ extern int btrfs_setxattr(struct dentry *dentry, const char *name,
37extern int btrfs_removexattr(struct dentry *dentry, const char *name); 37extern int btrfs_removexattr(struct dentry *dentry, const char *name);
38 38
39extern int btrfs_xattr_security_init(struct btrfs_trans_handle *trans, 39extern int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
40 struct inode *inode, struct inode *dir); 40 struct inode *inode, struct inode *dir,
41 const struct qstr *qstr);
41 42
42#endif /* __XATTR__ */ 43#endif /* __XATTR__ */
diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
index 42c7fafc8bfe..a0358c2189cb 100644
--- a/fs/cachefiles/namei.c
+++ b/fs/cachefiles/namei.c
@@ -275,6 +275,7 @@ static int cachefiles_bury_object(struct cachefiles_cache *cache,
275 bool preemptive) 275 bool preemptive)
276{ 276{
277 struct dentry *grave, *trap; 277 struct dentry *grave, *trap;
278 struct path path, path_to_graveyard;
278 char nbuffer[8 + 8 + 1]; 279 char nbuffer[8 + 8 + 1];
279 int ret; 280 int ret;
280 281
@@ -287,10 +288,18 @@ static int cachefiles_bury_object(struct cachefiles_cache *cache,
287 /* non-directories can just be unlinked */ 288 /* non-directories can just be unlinked */
288 if (!S_ISDIR(rep->d_inode->i_mode)) { 289 if (!S_ISDIR(rep->d_inode->i_mode)) {
289 _debug("unlink stale object"); 290 _debug("unlink stale object");
290 ret = vfs_unlink(dir->d_inode, rep);
291 291
292 if (preemptive) 292 path.mnt = cache->mnt;
293 cachefiles_mark_object_buried(cache, rep); 293 path.dentry = dir;
294 ret = security_path_unlink(&path, rep);
295 if (ret < 0) {
296 cachefiles_io_error(cache, "Unlink security error");
297 } else {
298 ret = vfs_unlink(dir->d_inode, rep);
299
300 if (preemptive)
301 cachefiles_mark_object_buried(cache, rep);
302 }
294 303
295 mutex_unlock(&dir->d_inode->i_mutex); 304 mutex_unlock(&dir->d_inode->i_mutex);
296 305
@@ -379,12 +388,23 @@ try_again:
379 } 388 }
380 389
381 /* attempt the rename */ 390 /* attempt the rename */
382 ret = vfs_rename(dir->d_inode, rep, cache->graveyard->d_inode, grave); 391 path.mnt = cache->mnt;
383 if (ret != 0 && ret != -ENOMEM) 392 path.dentry = dir;
384 cachefiles_io_error(cache, "Rename failed with error %d", ret); 393 path_to_graveyard.mnt = cache->mnt;
394 path_to_graveyard.dentry = cache->graveyard;
395 ret = security_path_rename(&path, rep, &path_to_graveyard, grave);
396 if (ret < 0) {
397 cachefiles_io_error(cache, "Rename security error %d", ret);
398 } else {
399 ret = vfs_rename(dir->d_inode, rep,
400 cache->graveyard->d_inode, grave);
401 if (ret != 0 && ret != -ENOMEM)
402 cachefiles_io_error(cache,
403 "Rename failed with error %d", ret);
385 404
386 if (preemptive) 405 if (preemptive)
387 cachefiles_mark_object_buried(cache, rep); 406 cachefiles_mark_object_buried(cache, rep);
407 }
388 408
389 unlock_rename(cache->graveyard, dir); 409 unlock_rename(cache->graveyard, dir);
390 dput(grave); 410 dput(grave);
@@ -448,6 +468,7 @@ int cachefiles_walk_to_object(struct cachefiles_object *parent,
448{ 468{
449 struct cachefiles_cache *cache; 469 struct cachefiles_cache *cache;
450 struct dentry *dir, *next = NULL; 470 struct dentry *dir, *next = NULL;
471 struct path path;
451 unsigned long start; 472 unsigned long start;
452 const char *name; 473 const char *name;
453 int ret, nlen; 474 int ret, nlen;
@@ -458,6 +479,7 @@ int cachefiles_walk_to_object(struct cachefiles_object *parent,
458 479
459 cache = container_of(parent->fscache.cache, 480 cache = container_of(parent->fscache.cache,
460 struct cachefiles_cache, cache); 481 struct cachefiles_cache, cache);
482 path.mnt = cache->mnt;
461 483
462 ASSERT(parent->dentry); 484 ASSERT(parent->dentry);
463 ASSERT(parent->dentry->d_inode); 485 ASSERT(parent->dentry->d_inode);
@@ -511,6 +533,10 @@ lookup_again:
511 if (ret < 0) 533 if (ret < 0)
512 goto create_error; 534 goto create_error;
513 535
536 path.dentry = dir;
537 ret = security_path_mkdir(&path, next, 0);
538 if (ret < 0)
539 goto create_error;
514 start = jiffies; 540 start = jiffies;
515 ret = vfs_mkdir(dir->d_inode, next, 0); 541 ret = vfs_mkdir(dir->d_inode, next, 0);
516 cachefiles_hist(cachefiles_mkdir_histogram, start); 542 cachefiles_hist(cachefiles_mkdir_histogram, start);
@@ -536,6 +562,10 @@ lookup_again:
536 if (ret < 0) 562 if (ret < 0)
537 goto create_error; 563 goto create_error;
538 564
565 path.dentry = dir;
566 ret = security_path_mknod(&path, next, S_IFREG, 0);
567 if (ret < 0)
568 goto create_error;
539 start = jiffies; 569 start = jiffies;
540 ret = vfs_create(dir->d_inode, next, S_IFREG, NULL); 570 ret = vfs_create(dir->d_inode, next, S_IFREG, NULL);
541 cachefiles_hist(cachefiles_create_histogram, start); 571 cachefiles_hist(cachefiles_create_histogram, start);
@@ -692,6 +722,7 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache,
692{ 722{
693 struct dentry *subdir; 723 struct dentry *subdir;
694 unsigned long start; 724 unsigned long start;
725 struct path path;
695 int ret; 726 int ret;
696 727
697 _enter(",,%s", dirname); 728 _enter(",,%s", dirname);
@@ -719,6 +750,11 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache,
719 750
720 _debug("attempt mkdir"); 751 _debug("attempt mkdir");
721 752
753 path.mnt = cache->mnt;
754 path.dentry = dir;
755 ret = security_path_mkdir(&path, subdir, 0700);
756 if (ret < 0)
757 goto mkdir_error;
722 ret = vfs_mkdir(dir->d_inode, subdir, 0700); 758 ret = vfs_mkdir(dir->d_inode, subdir, 0700);
723 if (ret < 0) 759 if (ret < 0)
724 goto mkdir_error; 760 goto mkdir_error;
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index 6346a2acf326..1b48c3370872 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -110,7 +110,7 @@ extern struct ext2_dir_entry_2 * ext2_dotdot (struct inode *, struct page **);
110extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, struct inode *, int); 110extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, struct inode *, int);
111 111
112/* ialloc.c */ 112/* ialloc.c */
113extern struct inode * ext2_new_inode (struct inode *, int); 113extern struct inode * ext2_new_inode (struct inode *, int, const struct qstr *);
114extern void ext2_free_inode (struct inode *); 114extern void ext2_free_inode (struct inode *);
115extern unsigned long ext2_count_free_inodes (struct super_block *); 115extern unsigned long ext2_count_free_inodes (struct super_block *);
116extern void ext2_check_inodes_bitmap (struct super_block *); 116extern void ext2_check_inodes_bitmap (struct super_block *);
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index ad70479aabff..ee9ed31948e1 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -429,7 +429,8 @@ found:
429 return group; 429 return group;
430} 430}
431 431
432struct inode *ext2_new_inode(struct inode *dir, int mode) 432struct inode *ext2_new_inode(struct inode *dir, int mode,
433 const struct qstr *qstr)
433{ 434{
434 struct super_block *sb; 435 struct super_block *sb;
435 struct buffer_head *bitmap_bh = NULL; 436 struct buffer_head *bitmap_bh = NULL;
@@ -585,7 +586,7 @@ got:
585 if (err) 586 if (err)
586 goto fail_free_drop; 587 goto fail_free_drop;
587 588
588 err = ext2_init_security(inode,dir); 589 err = ext2_init_security(inode, dir, qstr);
589 if (err) 590 if (err)
590 goto fail_free_drop; 591 goto fail_free_drop;
591 592
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index adb91855ccd0..ed5c5d496ee9 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -104,7 +104,7 @@ static int ext2_create (struct inode * dir, struct dentry * dentry, int mode, st
104 104
105 dquot_initialize(dir); 105 dquot_initialize(dir);
106 106
107 inode = ext2_new_inode(dir, mode); 107 inode = ext2_new_inode(dir, mode, &dentry->d_name);
108 if (IS_ERR(inode)) 108 if (IS_ERR(inode))
109 return PTR_ERR(inode); 109 return PTR_ERR(inode);
110 110
@@ -133,7 +133,7 @@ static int ext2_mknod (struct inode * dir, struct dentry *dentry, int mode, dev_
133 133
134 dquot_initialize(dir); 134 dquot_initialize(dir);
135 135
136 inode = ext2_new_inode (dir, mode); 136 inode = ext2_new_inode (dir, mode, &dentry->d_name);
137 err = PTR_ERR(inode); 137 err = PTR_ERR(inode);
138 if (!IS_ERR(inode)) { 138 if (!IS_ERR(inode)) {
139 init_special_inode(inode, inode->i_mode, rdev); 139 init_special_inode(inode, inode->i_mode, rdev);
@@ -159,7 +159,7 @@ static int ext2_symlink (struct inode * dir, struct dentry * dentry,
159 159
160 dquot_initialize(dir); 160 dquot_initialize(dir);
161 161
162 inode = ext2_new_inode (dir, S_IFLNK | S_IRWXUGO); 162 inode = ext2_new_inode (dir, S_IFLNK | S_IRWXUGO, &dentry->d_name);
163 err = PTR_ERR(inode); 163 err = PTR_ERR(inode);
164 if (IS_ERR(inode)) 164 if (IS_ERR(inode))
165 goto out; 165 goto out;
@@ -230,7 +230,7 @@ static int ext2_mkdir(struct inode * dir, struct dentry * dentry, int mode)
230 230
231 inode_inc_link_count(dir); 231 inode_inc_link_count(dir);
232 232
233 inode = ext2_new_inode (dir, S_IFDIR | mode); 233 inode = ext2_new_inode(dir, S_IFDIR | mode, &dentry->d_name);
234 err = PTR_ERR(inode); 234 err = PTR_ERR(inode);
235 if (IS_ERR(inode)) 235 if (IS_ERR(inode))
236 goto out_dir; 236 goto out_dir;
diff --git a/fs/ext2/xattr.h b/fs/ext2/xattr.h
index a1a1c2184616..5e41cccff762 100644
--- a/fs/ext2/xattr.h
+++ b/fs/ext2/xattr.h
@@ -116,9 +116,11 @@ exit_ext2_xattr(void)
116# endif /* CONFIG_EXT2_FS_XATTR */ 116# endif /* CONFIG_EXT2_FS_XATTR */
117 117
118#ifdef CONFIG_EXT2_FS_SECURITY 118#ifdef CONFIG_EXT2_FS_SECURITY
119extern int ext2_init_security(struct inode *inode, struct inode *dir); 119extern int ext2_init_security(struct inode *inode, struct inode *dir,
120 const struct qstr *qstr);
120#else 121#else
121static inline int ext2_init_security(struct inode *inode, struct inode *dir) 122static inline int ext2_init_security(struct inode *inode, struct inode *dir,
123 const struct qstr *qstr)
122{ 124{
123 return 0; 125 return 0;
124} 126}
diff --git a/fs/ext2/xattr_security.c b/fs/ext2/xattr_security.c
index 3004e15d5da5..5d979b4347b0 100644
--- a/fs/ext2/xattr_security.c
+++ b/fs/ext2/xattr_security.c
@@ -47,14 +47,15 @@ ext2_xattr_security_set(struct dentry *dentry, const char *name,
47} 47}
48 48
49int 49int
50ext2_init_security(struct inode *inode, struct inode *dir) 50ext2_init_security(struct inode *inode, struct inode *dir,
51 const struct qstr *qstr)
51{ 52{
52 int err; 53 int err;
53 size_t len; 54 size_t len;
54 void *value; 55 void *value;
55 char *name; 56 char *name;
56 57
57 err = security_inode_init_security(inode, dir, &name, &value, &len); 58 err = security_inode_init_security(inode, dir, qstr, &name, &value, &len);
58 if (err) { 59 if (err) {
59 if (err == -EOPNOTSUPP) 60 if (err == -EOPNOTSUPP)
60 return 0; 61 return 0;
diff --git a/fs/ext3/ialloc.c b/fs/ext3/ialloc.c
index 9724aef22460..bfc2dc43681d 100644
--- a/fs/ext3/ialloc.c
+++ b/fs/ext3/ialloc.c
@@ -404,7 +404,8 @@ static int find_group_other(struct super_block *sb, struct inode *parent)
404 * For other inodes, search forward from the parent directory's block 404 * For other inodes, search forward from the parent directory's block
405 * group to find a free inode. 405 * group to find a free inode.
406 */ 406 */
407struct inode *ext3_new_inode(handle_t *handle, struct inode * dir, int mode) 407struct inode *ext3_new_inode(handle_t *handle, struct inode * dir,
408 const struct qstr *qstr, int mode)
408{ 409{
409 struct super_block *sb; 410 struct super_block *sb;
410 struct buffer_head *bitmap_bh = NULL; 411 struct buffer_head *bitmap_bh = NULL;
@@ -589,7 +590,7 @@ got:
589 if (err) 590 if (err)
590 goto fail_free_drop; 591 goto fail_free_drop;
591 592
592 err = ext3_init_security(handle,inode, dir); 593 err = ext3_init_security(handle, inode, dir, qstr);
593 if (err) 594 if (err)
594 goto fail_free_drop; 595 goto fail_free_drop;
595 596
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 561f69256266..0521a007ae6d 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -1710,7 +1710,7 @@ retry:
1710 if (IS_DIRSYNC(dir)) 1710 if (IS_DIRSYNC(dir))
1711 handle->h_sync = 1; 1711 handle->h_sync = 1;
1712 1712
1713 inode = ext3_new_inode (handle, dir, mode); 1713 inode = ext3_new_inode (handle, dir, &dentry->d_name, mode);
1714 err = PTR_ERR(inode); 1714 err = PTR_ERR(inode);
1715 if (!IS_ERR(inode)) { 1715 if (!IS_ERR(inode)) {
1716 inode->i_op = &ext3_file_inode_operations; 1716 inode->i_op = &ext3_file_inode_operations;
@@ -1746,7 +1746,7 @@ retry:
1746 if (IS_DIRSYNC(dir)) 1746 if (IS_DIRSYNC(dir))
1747 handle->h_sync = 1; 1747 handle->h_sync = 1;
1748 1748
1749 inode = ext3_new_inode (handle, dir, mode); 1749 inode = ext3_new_inode (handle, dir, &dentry->d_name, mode);
1750 err = PTR_ERR(inode); 1750 err = PTR_ERR(inode);
1751 if (!IS_ERR(inode)) { 1751 if (!IS_ERR(inode)) {
1752 init_special_inode(inode, inode->i_mode, rdev); 1752 init_special_inode(inode, inode->i_mode, rdev);
@@ -1784,7 +1784,7 @@ retry:
1784 if (IS_DIRSYNC(dir)) 1784 if (IS_DIRSYNC(dir))
1785 handle->h_sync = 1; 1785 handle->h_sync = 1;
1786 1786
1787 inode = ext3_new_inode (handle, dir, S_IFDIR | mode); 1787 inode = ext3_new_inode (handle, dir, &dentry->d_name, S_IFDIR | mode);
1788 err = PTR_ERR(inode); 1788 err = PTR_ERR(inode);
1789 if (IS_ERR(inode)) 1789 if (IS_ERR(inode))
1790 goto out_stop; 1790 goto out_stop;
@@ -2206,7 +2206,7 @@ retry:
2206 if (IS_DIRSYNC(dir)) 2206 if (IS_DIRSYNC(dir))
2207 handle->h_sync = 1; 2207 handle->h_sync = 1;
2208 2208
2209 inode = ext3_new_inode (handle, dir, S_IFLNK|S_IRWXUGO); 2209 inode = ext3_new_inode (handle, dir, &dentry->d_name, S_IFLNK|S_IRWXUGO);
2210 err = PTR_ERR(inode); 2210 err = PTR_ERR(inode);
2211 if (IS_ERR(inode)) 2211 if (IS_ERR(inode))
2212 goto out_stop; 2212 goto out_stop;
diff --git a/fs/ext3/xattr.h b/fs/ext3/xattr.h
index 377fe7201169..2be4f69bfa64 100644
--- a/fs/ext3/xattr.h
+++ b/fs/ext3/xattr.h
@@ -128,10 +128,10 @@ exit_ext3_xattr(void)
128 128
129#ifdef CONFIG_EXT3_FS_SECURITY 129#ifdef CONFIG_EXT3_FS_SECURITY
130extern int ext3_init_security(handle_t *handle, struct inode *inode, 130extern int ext3_init_security(handle_t *handle, struct inode *inode,
131 struct inode *dir); 131 struct inode *dir, const struct qstr *qstr);
132#else 132#else
133static inline int ext3_init_security(handle_t *handle, struct inode *inode, 133static inline int ext3_init_security(handle_t *handle, struct inode *inode,
134 struct inode *dir) 134 struct inode *dir, const struct qstr *qstr)
135{ 135{
136 return 0; 136 return 0;
137} 137}
diff --git a/fs/ext3/xattr_security.c b/fs/ext3/xattr_security.c
index 03a99bfc59f9..b8d9f83aa5c5 100644
--- a/fs/ext3/xattr_security.c
+++ b/fs/ext3/xattr_security.c
@@ -49,14 +49,15 @@ ext3_xattr_security_set(struct dentry *dentry, const char *name,
49} 49}
50 50
51int 51int
52ext3_init_security(handle_t *handle, struct inode *inode, struct inode *dir) 52ext3_init_security(handle_t *handle, struct inode *inode, struct inode *dir,
53 const struct qstr *qstr)
53{ 54{
54 int err; 55 int err;
55 size_t len; 56 size_t len;
56 void *value; 57 void *value;
57 char *name; 58 char *name;
58 59
59 err = security_inode_init_security(inode, dir, &name, &value, &len); 60 err = security_inode_init_security(inode, dir, qstr, &name, &value, &len);
60 if (err) { 61 if (err) {
61 if (err == -EOPNOTSUPP) 62 if (err == -EOPNOTSUPP)
62 return 0; 63 return 0;
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index eb9097aec6f0..78b79e1bd7ed 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -1042,7 +1042,7 @@ got:
1042 if (err) 1042 if (err)
1043 goto fail_free_drop; 1043 goto fail_free_drop;
1044 1044
1045 err = ext4_init_security(handle, inode, dir); 1045 err = ext4_init_security(handle, inode, dir, qstr);
1046 if (err) 1046 if (err)
1047 goto fail_free_drop; 1047 goto fail_free_drop;
1048 1048
diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index 1ef16520b950..25b7387ff183 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -145,10 +145,10 @@ ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
145 145
146#ifdef CONFIG_EXT4_FS_SECURITY 146#ifdef CONFIG_EXT4_FS_SECURITY
147extern int ext4_init_security(handle_t *handle, struct inode *inode, 147extern int ext4_init_security(handle_t *handle, struct inode *inode,
148 struct inode *dir); 148 struct inode *dir, const struct qstr *qstr);
149#else 149#else
150static inline int ext4_init_security(handle_t *handle, struct inode *inode, 150static inline int ext4_init_security(handle_t *handle, struct inode *inode,
151 struct inode *dir) 151 struct inode *dir, const struct qstr *qstr)
152{ 152{
153 return 0; 153 return 0;
154} 154}
diff --git a/fs/ext4/xattr_security.c b/fs/ext4/xattr_security.c
index 9b21268e121c..007c3bfbf094 100644
--- a/fs/ext4/xattr_security.c
+++ b/fs/ext4/xattr_security.c
@@ -49,14 +49,15 @@ ext4_xattr_security_set(struct dentry *dentry, const char *name,
49} 49}
50 50
51int 51int
52ext4_init_security(handle_t *handle, struct inode *inode, struct inode *dir) 52ext4_init_security(handle_t *handle, struct inode *inode, struct inode *dir,
53 const struct qstr *qstr)
53{ 54{
54 int err; 55 int err;
55 size_t len; 56 size_t len;
56 void *value; 57 void *value;
57 char *name; 58 char *name;
58 59
59 err = security_inode_init_security(inode, dir, &name, &value, &len); 60 err = security_inode_init_security(inode, dir, qstr, &name, &value, &len);
60 if (err) { 61 if (err) {
61 if (err == -EOPNOTSUPP) 62 if (err == -EOPNOTSUPP)
62 return 0; 63 return 0;
diff --git a/fs/file_table.c b/fs/file_table.c
index 74a9544ac770..bfab973c6c5b 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -190,7 +190,8 @@ struct file *alloc_file(struct path *path, fmode_t mode,
190 file_take_write(file); 190 file_take_write(file);
191 WARN_ON(mnt_clone_write(path->mnt)); 191 WARN_ON(mnt_clone_write(path->mnt));
192 } 192 }
193 ima_counts_get(file); 193 if ((mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
194 i_readcount_inc(path->dentry->d_inode);
194 return file; 195 return file;
195} 196}
196EXPORT_SYMBOL(alloc_file); 197EXPORT_SYMBOL(alloc_file);
@@ -251,6 +252,8 @@ static void __fput(struct file *file)
251 fops_put(file->f_op); 252 fops_put(file->f_op);
252 put_pid(file->f_owner.pid); 253 put_pid(file->f_owner.pid);
253 file_sb_list_del(file); 254 file_sb_list_del(file);
255 if ((file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
256 i_readcount_dec(inode);
254 if (file->f_mode & FMODE_WRITE) 257 if (file->f_mode & FMODE_WRITE)
255 drop_file_write_access(file); 258 drop_file_write_access(file);
256 file->f_path.dentry = NULL; 259 file->f_path.dentry = NULL;
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 7aa7d4f8984a..97d54a28776a 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -763,14 +763,15 @@ fail:
763 return error; 763 return error;
764} 764}
765 765
766static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip) 766static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip,
767 const struct qstr *qstr)
767{ 768{
768 int err; 769 int err;
769 size_t len; 770 size_t len;
770 void *value; 771 void *value;
771 char *name; 772 char *name;
772 773
773 err = security_inode_init_security(&ip->i_inode, &dip->i_inode, 774 err = security_inode_init_security(&ip->i_inode, &dip->i_inode, qstr,
774 &name, &value, &len); 775 &name, &value, &len);
775 776
776 if (err) { 777 if (err) {
@@ -854,7 +855,7 @@ struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
854 if (error) 855 if (error)
855 goto fail_gunlock2; 856 goto fail_gunlock2;
856 857
857 error = gfs2_security_init(dip, GFS2_I(inode)); 858 error = gfs2_security_init(dip, GFS2_I(inode), name);
858 if (error) 859 if (error)
859 goto fail_gunlock2; 860 goto fail_gunlock2;
860 861
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 92978658ed18..82faddd1f321 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -215,8 +215,7 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode,
215 no chance of AB-BA deadlock involving its f->sem). */ 215 no chance of AB-BA deadlock involving its f->sem). */
216 mutex_unlock(&f->sem); 216 mutex_unlock(&f->sem);
217 217
218 ret = jffs2_do_create(c, dir_f, f, ri, 218 ret = jffs2_do_create(c, dir_f, f, ri, &dentry->d_name);
219 dentry->d_name.name, dentry->d_name.len);
220 if (ret) 219 if (ret)
221 goto fail; 220 goto fail;
222 221
@@ -386,7 +385,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
386 385
387 jffs2_complete_reservation(c); 386 jffs2_complete_reservation(c);
388 387
389 ret = jffs2_init_security(inode, dir_i); 388 ret = jffs2_init_security(inode, dir_i, &dentry->d_name);
390 if (ret) 389 if (ret)
391 goto fail; 390 goto fail;
392 391
@@ -530,7 +529,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
530 529
531 jffs2_complete_reservation(c); 530 jffs2_complete_reservation(c);
532 531
533 ret = jffs2_init_security(inode, dir_i); 532 ret = jffs2_init_security(inode, dir_i, &dentry->d_name);
534 if (ret) 533 if (ret)
535 goto fail; 534 goto fail;
536 535
@@ -703,7 +702,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
703 702
704 jffs2_complete_reservation(c); 703 jffs2_complete_reservation(c);
705 704
706 ret = jffs2_init_security(inode, dir_i); 705 ret = jffs2_init_security(inode, dir_i, &dentry->d_name);
707 if (ret) 706 if (ret)
708 goto fail; 707 goto fail;
709 708
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index 5a53d9bdb2b5..e4619b00f7c5 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -401,7 +401,7 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
401 struct jffs2_raw_inode *ri, unsigned char *buf, 401 struct jffs2_raw_inode *ri, unsigned char *buf,
402 uint32_t offset, uint32_t writelen, uint32_t *retlen); 402 uint32_t offset, uint32_t writelen, uint32_t *retlen);
403int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f, 403int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f,
404 struct jffs2_raw_inode *ri, const char *name, int namelen); 404 struct jffs2_raw_inode *ri, const struct qstr *qstr);
405int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name, 405int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name,
406 int namelen, struct jffs2_inode_info *dead_f, uint32_t time); 406 int namelen, struct jffs2_inode_info *dead_f, uint32_t time);
407int jffs2_do_link(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, 407int jffs2_do_link(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino,
diff --git a/fs/jffs2/security.c b/fs/jffs2/security.c
index 239f51216a68..cfeb7164b085 100644
--- a/fs/jffs2/security.c
+++ b/fs/jffs2/security.c
@@ -23,14 +23,15 @@
23#include "nodelist.h" 23#include "nodelist.h"
24 24
25/* ---- Initial Security Label Attachment -------------- */ 25/* ---- Initial Security Label Attachment -------------- */
26int jffs2_init_security(struct inode *inode, struct inode *dir) 26int jffs2_init_security(struct inode *inode, struct inode *dir,
27 const struct qstr *qstr)
27{ 28{
28 int rc; 29 int rc;
29 size_t len; 30 size_t len;
30 void *value; 31 void *value;
31 char *name; 32 char *name;
32 33
33 rc = security_inode_init_security(inode, dir, &name, &value, &len); 34 rc = security_inode_init_security(inode, dir, qstr, &name, &value, &len);
34 if (rc) { 35 if (rc) {
35 if (rc == -EOPNOTSUPP) 36 if (rc == -EOPNOTSUPP)
36 return 0; 37 return 0;
diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c
index c819eb0e982d..30d175b6d290 100644
--- a/fs/jffs2/write.c
+++ b/fs/jffs2/write.c
@@ -424,7 +424,9 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
424 return ret; 424 return ret;
425} 425}
426 426
427int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const char *name, int namelen) 427int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
428 struct jffs2_inode_info *f, struct jffs2_raw_inode *ri,
429 const struct qstr *qstr)
428{ 430{
429 struct jffs2_raw_dirent *rd; 431 struct jffs2_raw_dirent *rd;
430 struct jffs2_full_dnode *fn; 432 struct jffs2_full_dnode *fn;
@@ -466,15 +468,15 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
466 mutex_unlock(&f->sem); 468 mutex_unlock(&f->sem);
467 jffs2_complete_reservation(c); 469 jffs2_complete_reservation(c);
468 470
469 ret = jffs2_init_security(&f->vfs_inode, &dir_f->vfs_inode); 471 ret = jffs2_init_security(&f->vfs_inode, &dir_f->vfs_inode, qstr);
470 if (ret) 472 if (ret)
471 return ret; 473 return ret;
472 ret = jffs2_init_acl_post(&f->vfs_inode); 474 ret = jffs2_init_acl_post(&f->vfs_inode);
473 if (ret) 475 if (ret)
474 return ret; 476 return ret;
475 477
476 ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen, 478 ret = jffs2_reserve_space(c, sizeof(*rd)+qstr->len, &alloclen,
477 ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen)); 479 ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(qstr->len));
478 480
479 if (ret) { 481 if (ret) {
480 /* Eep. */ 482 /* Eep. */
@@ -493,19 +495,19 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
493 495
494 rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); 496 rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
495 rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT); 497 rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
496 rd->totlen = cpu_to_je32(sizeof(*rd) + namelen); 498 rd->totlen = cpu_to_je32(sizeof(*rd) + qstr->len);
497 rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4)); 499 rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
498 500
499 rd->pino = cpu_to_je32(dir_f->inocache->ino); 501 rd->pino = cpu_to_je32(dir_f->inocache->ino);
500 rd->version = cpu_to_je32(++dir_f->highest_version); 502 rd->version = cpu_to_je32(++dir_f->highest_version);
501 rd->ino = ri->ino; 503 rd->ino = ri->ino;
502 rd->mctime = ri->ctime; 504 rd->mctime = ri->ctime;
503 rd->nsize = namelen; 505 rd->nsize = qstr->len;
504 rd->type = DT_REG; 506 rd->type = DT_REG;
505 rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8)); 507 rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
506 rd->name_crc = cpu_to_je32(crc32(0, name, namelen)); 508 rd->name_crc = cpu_to_je32(crc32(0, qstr->name, qstr->len));
507 509
508 fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, ALLOC_NORMAL); 510 fd = jffs2_write_dirent(c, dir_f, rd, qstr->name, qstr->len, ALLOC_NORMAL);
509 511
510 jffs2_free_raw_dirent(rd); 512 jffs2_free_raw_dirent(rd);
511 513
diff --git a/fs/jffs2/xattr.h b/fs/jffs2/xattr.h
index cf4f5759b42b..7be4beb306f3 100644
--- a/fs/jffs2/xattr.h
+++ b/fs/jffs2/xattr.h
@@ -121,10 +121,11 @@ extern ssize_t jffs2_listxattr(struct dentry *, char *, size_t);
121#endif /* CONFIG_JFFS2_FS_XATTR */ 121#endif /* CONFIG_JFFS2_FS_XATTR */
122 122
123#ifdef CONFIG_JFFS2_FS_SECURITY 123#ifdef CONFIG_JFFS2_FS_SECURITY
124extern int jffs2_init_security(struct inode *inode, struct inode *dir); 124extern int jffs2_init_security(struct inode *inode, struct inode *dir,
125 const struct qstr *qstr);
125extern const struct xattr_handler jffs2_security_xattr_handler; 126extern const struct xattr_handler jffs2_security_xattr_handler;
126#else 127#else
127#define jffs2_init_security(inode,dir) (0) 128#define jffs2_init_security(inode,dir,qstr) (0)
128#endif /* CONFIG_JFFS2_FS_SECURITY */ 129#endif /* CONFIG_JFFS2_FS_SECURITY */
129 130
130#endif /* _JFFS2_FS_XATTR_H_ */ 131#endif /* _JFFS2_FS_XATTR_H_ */
diff --git a/fs/jfs/jfs_xattr.h b/fs/jfs/jfs_xattr.h
index 88b6cc535bf2..e9e100fd7c09 100644
--- a/fs/jfs/jfs_xattr.h
+++ b/fs/jfs/jfs_xattr.h
@@ -62,10 +62,11 @@ extern ssize_t jfs_listxattr(struct dentry *, char *, size_t);
62extern int jfs_removexattr(struct dentry *, const char *); 62extern int jfs_removexattr(struct dentry *, const char *);
63 63
64#ifdef CONFIG_JFS_SECURITY 64#ifdef CONFIG_JFS_SECURITY
65extern int jfs_init_security(tid_t, struct inode *, struct inode *); 65extern int jfs_init_security(tid_t, struct inode *, struct inode *,
66 const struct qstr *);
66#else 67#else
67static inline int jfs_init_security(tid_t tid, struct inode *inode, 68static inline int jfs_init_security(tid_t tid, struct inode *inode,
68 struct inode *dir) 69 struct inode *dir, const struct qstr *qstr)
69{ 70{
70 return 0; 71 return 0;
71} 72}
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 3f04a1804931..eaaf2b511e89 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -115,7 +115,7 @@ static int jfs_create(struct inode *dip, struct dentry *dentry, int mode,
115 if (rc) 115 if (rc)
116 goto out3; 116 goto out3;
117 117
118 rc = jfs_init_security(tid, ip, dip); 118 rc = jfs_init_security(tid, ip, dip, &dentry->d_name);
119 if (rc) { 119 if (rc) {
120 txAbort(tid, 0); 120 txAbort(tid, 0);
121 goto out3; 121 goto out3;
@@ -253,7 +253,7 @@ static int jfs_mkdir(struct inode *dip, struct dentry *dentry, int mode)
253 if (rc) 253 if (rc)
254 goto out3; 254 goto out3;
255 255
256 rc = jfs_init_security(tid, ip, dip); 256 rc = jfs_init_security(tid, ip, dip, &dentry->d_name);
257 if (rc) { 257 if (rc) {
258 txAbort(tid, 0); 258 txAbort(tid, 0);
259 goto out3; 259 goto out3;
@@ -929,7 +929,7 @@ static int jfs_symlink(struct inode *dip, struct dentry *dentry,
929 mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT); 929 mutex_lock_nested(&JFS_IP(dip)->commit_mutex, COMMIT_MUTEX_PARENT);
930 mutex_lock_nested(&JFS_IP(ip)->commit_mutex, COMMIT_MUTEX_CHILD); 930 mutex_lock_nested(&JFS_IP(ip)->commit_mutex, COMMIT_MUTEX_CHILD);
931 931
932 rc = jfs_init_security(tid, ip, dip); 932 rc = jfs_init_security(tid, ip, dip, &dentry->d_name);
933 if (rc) 933 if (rc)
934 goto out3; 934 goto out3;
935 935
@@ -1392,7 +1392,7 @@ static int jfs_mknod(struct inode *dir, struct dentry *dentry,
1392 if (rc) 1392 if (rc)
1393 goto out3; 1393 goto out3;
1394 1394
1395 rc = jfs_init_security(tid, ip, dir); 1395 rc = jfs_init_security(tid, ip, dir, &dentry->d_name);
1396 if (rc) { 1396 if (rc) {
1397 txAbort(tid, 0); 1397 txAbort(tid, 0);
1398 goto out3; 1398 goto out3;
diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c
index 2d7f165d0f1d..3fa4c32272df 100644
--- a/fs/jfs/xattr.c
+++ b/fs/jfs/xattr.c
@@ -1091,7 +1091,8 @@ int jfs_removexattr(struct dentry *dentry, const char *name)
1091} 1091}
1092 1092
1093#ifdef CONFIG_JFS_SECURITY 1093#ifdef CONFIG_JFS_SECURITY
1094int jfs_init_security(tid_t tid, struct inode *inode, struct inode *dir) 1094int jfs_init_security(tid_t tid, struct inode *inode, struct inode *dir,
1095 const struct qstr *qstr)
1095{ 1096{
1096 int rc; 1097 int rc;
1097 size_t len; 1098 size_t len;
@@ -1099,7 +1100,8 @@ int jfs_init_security(tid_t tid, struct inode *inode, struct inode *dir)
1099 char *suffix; 1100 char *suffix;
1100 char *name; 1101 char *name;
1101 1102
1102 rc = security_inode_init_security(inode, dir, &suffix, &value, &len); 1103 rc = security_inode_init_security(inode, dir, qstr, &suffix, &value,
1104 &len);
1103 if (rc) { 1105 if (rc) {
1104 if (rc == -EOPNOTSUPP) 1106 if (rc == -EOPNOTSUPP)
1105 return 0; 1107 return 0;
diff --git a/fs/namespace.c b/fs/namespace.c
index dffe6f49ab93..e96e03782def 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1783,6 +1783,10 @@ static int do_remount(struct path *path, int flags, int mnt_flags,
1783 if (path->dentry != path->mnt->mnt_root) 1783 if (path->dentry != path->mnt->mnt_root)
1784 return -EINVAL; 1784 return -EINVAL;
1785 1785
1786 err = security_sb_remount(sb, data);
1787 if (err)
1788 return err;
1789
1786 down_write(&sb->s_umount); 1790 down_write(&sb->s_umount);
1787 if (flags & MS_BIND) 1791 if (flags & MS_BIND)
1788 err = change_mount_flags(path->mnt, flags); 1792 err = change_mount_flags(path->mnt, flags);
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 849fb4a2e814..d6c25d76b537 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -293,7 +293,7 @@ static int ocfs2_mknod(struct inode *dir,
293 } 293 }
294 294
295 /* get security xattr */ 295 /* get security xattr */
296 status = ocfs2_init_security_get(inode, dir, &si); 296 status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
297 if (status) { 297 if (status) {
298 if (status == -EOPNOTSUPP) 298 if (status == -EOPNOTSUPP)
299 si.enable = 0; 299 si.enable = 0;
@@ -1665,7 +1665,7 @@ static int ocfs2_symlink(struct inode *dir,
1665 } 1665 }
1666 1666
1667 /* get security xattr */ 1667 /* get security xattr */
1668 status = ocfs2_init_security_get(inode, dir, &si); 1668 status = ocfs2_init_security_get(inode, dir, &dentry->d_name, &si);
1669 if (status) { 1669 if (status) {
1670 if (status == -EOPNOTSUPP) 1670 if (status == -EOPNOTSUPP)
1671 si.enable = 0; 1671 si.enable = 0;
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 29623da133cc..c384d634872a 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -4328,7 +4328,8 @@ static int ocfs2_reflink(struct dentry *old_dentry, struct inode *dir,
4328 4328
4329 /* If the security isn't preserved, we need to re-initialize them. */ 4329 /* If the security isn't preserved, we need to re-initialize them. */
4330 if (!preserve) { 4330 if (!preserve) {
4331 error = ocfs2_init_security_and_acl(dir, new_orphan_inode); 4331 error = ocfs2_init_security_and_acl(dir, new_orphan_inode,
4332 &new_dentry->d_name);
4332 if (error) 4333 if (error)
4333 mlog_errno(error); 4334 mlog_errno(error);
4334 } 4335 }
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 67cd43914641..6bb602486c6b 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -7185,7 +7185,8 @@ out:
7185 * must not hold any lock expect i_mutex. 7185 * must not hold any lock expect i_mutex.
7186 */ 7186 */
7187int ocfs2_init_security_and_acl(struct inode *dir, 7187int ocfs2_init_security_and_acl(struct inode *dir,
7188 struct inode *inode) 7188 struct inode *inode,
7189 const struct qstr *qstr)
7189{ 7190{
7190 int ret = 0; 7191 int ret = 0;
7191 struct buffer_head *dir_bh = NULL; 7192 struct buffer_head *dir_bh = NULL;
@@ -7193,7 +7194,7 @@ int ocfs2_init_security_and_acl(struct inode *dir,
7193 .enable = 1, 7194 .enable = 1,
7194 }; 7195 };
7195 7196
7196 ret = ocfs2_init_security_get(inode, dir, &si); 7197 ret = ocfs2_init_security_get(inode, dir, qstr, &si);
7197 if (!ret) { 7198 if (!ret) {
7198 ret = ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_SECURITY, 7199 ret = ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_SECURITY,
7199 si.name, si.value, si.value_len, 7200 si.name, si.value, si.value_len,
@@ -7261,13 +7262,14 @@ static int ocfs2_xattr_security_set(struct dentry *dentry, const char *name,
7261 7262
7262int ocfs2_init_security_get(struct inode *inode, 7263int ocfs2_init_security_get(struct inode *inode,
7263 struct inode *dir, 7264 struct inode *dir,
7265 const struct qstr *qstr,
7264 struct ocfs2_security_xattr_info *si) 7266 struct ocfs2_security_xattr_info *si)
7265{ 7267{
7266 /* check whether ocfs2 support feature xattr */ 7268 /* check whether ocfs2 support feature xattr */
7267 if (!ocfs2_supports_xattr(OCFS2_SB(dir->i_sb))) 7269 if (!ocfs2_supports_xattr(OCFS2_SB(dir->i_sb)))
7268 return -EOPNOTSUPP; 7270 return -EOPNOTSUPP;
7269 return security_inode_init_security(inode, dir, &si->name, &si->value, 7271 return security_inode_init_security(inode, dir, qstr, &si->name,
7270 &si->value_len); 7272 &si->value, &si->value_len);
7271} 7273}
7272 7274
7273int ocfs2_init_security_set(handle_t *handle, 7275int ocfs2_init_security_set(handle_t *handle,
diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h
index aa64bb37a65b..d63cfb72316b 100644
--- a/fs/ocfs2/xattr.h
+++ b/fs/ocfs2/xattr.h
@@ -57,6 +57,7 @@ int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
57 struct ocfs2_dinode *di); 57 struct ocfs2_dinode *di);
58int ocfs2_xattr_remove(struct inode *, struct buffer_head *); 58int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
59int ocfs2_init_security_get(struct inode *, struct inode *, 59int ocfs2_init_security_get(struct inode *, struct inode *,
60 const struct qstr *,
60 struct ocfs2_security_xattr_info *); 61 struct ocfs2_security_xattr_info *);
61int ocfs2_init_security_set(handle_t *, struct inode *, 62int ocfs2_init_security_set(handle_t *, struct inode *,
62 struct buffer_head *, 63 struct buffer_head *,
@@ -94,5 +95,6 @@ int ocfs2_reflink_xattrs(struct inode *old_inode,
94 struct buffer_head *new_bh, 95 struct buffer_head *new_bh,
95 bool preserve_security); 96 bool preserve_security);
96int ocfs2_init_security_and_acl(struct inode *dir, 97int ocfs2_init_security_and_acl(struct inode *dir,
97 struct inode *inode); 98 struct inode *inode,
99 const struct qstr *qstr);
98#endif /* OCFS2_XATTR_H */ 100#endif /* OCFS2_XATTR_H */
diff --git a/fs/open.c b/fs/open.c
index 3cac0bda46df..f83ca80cc59a 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -714,7 +714,8 @@ static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt,
714 if (error) 714 if (error)
715 goto cleanup_all; 715 goto cleanup_all;
716 } 716 }
717 ima_counts_get(f); 717 if ((f->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
718 i_readcount_inc(inode);
718 719
719 f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC); 720 f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);
720 721
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 8eb2522111c5..f50133c11c24 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -32,7 +32,6 @@ static struct inode *proc_sys_make_inode(struct super_block *sb,
32 ei->sysctl_entry = table; 32 ei->sysctl_entry = table;
33 33
34 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; 34 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
35 inode->i_flags |= S_PRIVATE; /* tell selinux to ignore this inode */
36 inode->i_mode = table->mode; 35 inode->i_mode = table->mode;
37 if (!table->child) { 36 if (!table->child) {
38 inode->i_mode |= S_IFREG; 37 inode->i_mode |= S_IFREG;
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index 4b2eb564fdad..118662690cdf 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -593,7 +593,7 @@ static int reiserfs_create(struct inode *dir, struct dentry *dentry, int mode,
593 new_inode_init(inode, dir, mode); 593 new_inode_init(inode, dir, mode);
594 594
595 jbegin_count += reiserfs_cache_default_acl(dir); 595 jbegin_count += reiserfs_cache_default_acl(dir);
596 retval = reiserfs_security_init(dir, inode, &security); 596 retval = reiserfs_security_init(dir, inode, &dentry->d_name, &security);
597 if (retval < 0) { 597 if (retval < 0) {
598 drop_new_inode(inode); 598 drop_new_inode(inode);
599 return retval; 599 return retval;
@@ -667,7 +667,7 @@ static int reiserfs_mknod(struct inode *dir, struct dentry *dentry, int mode,
667 new_inode_init(inode, dir, mode); 667 new_inode_init(inode, dir, mode);
668 668
669 jbegin_count += reiserfs_cache_default_acl(dir); 669 jbegin_count += reiserfs_cache_default_acl(dir);
670 retval = reiserfs_security_init(dir, inode, &security); 670 retval = reiserfs_security_init(dir, inode, &dentry->d_name, &security);
671 if (retval < 0) { 671 if (retval < 0) {
672 drop_new_inode(inode); 672 drop_new_inode(inode);
673 return retval; 673 return retval;
@@ -747,7 +747,7 @@ static int reiserfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
747 new_inode_init(inode, dir, mode); 747 new_inode_init(inode, dir, mode);
748 748
749 jbegin_count += reiserfs_cache_default_acl(dir); 749 jbegin_count += reiserfs_cache_default_acl(dir);
750 retval = reiserfs_security_init(dir, inode, &security); 750 retval = reiserfs_security_init(dir, inode, &dentry->d_name, &security);
751 if (retval < 0) { 751 if (retval < 0) {
752 drop_new_inode(inode); 752 drop_new_inode(inode);
753 return retval; 753 return retval;
@@ -1032,7 +1032,8 @@ static int reiserfs_symlink(struct inode *parent_dir,
1032 } 1032 }
1033 new_inode_init(inode, parent_dir, mode); 1033 new_inode_init(inode, parent_dir, mode);
1034 1034
1035 retval = reiserfs_security_init(parent_dir, inode, &security); 1035 retval = reiserfs_security_init(parent_dir, inode, &dentry->d_name,
1036 &security);
1036 if (retval < 0) { 1037 if (retval < 0) {
1037 drop_new_inode(inode); 1038 drop_new_inode(inode);
1038 return retval; 1039 return retval;
diff --git a/fs/reiserfs/xattr_security.c b/fs/reiserfs/xattr_security.c
index 237c6928d3c6..ef66c18a9332 100644
--- a/fs/reiserfs/xattr_security.c
+++ b/fs/reiserfs/xattr_security.c
@@ -54,6 +54,7 @@ static size_t security_list(struct dentry *dentry, char *list, size_t list_len,
54 * of blocks needed for the transaction. If successful, reiserfs_security 54 * of blocks needed for the transaction. If successful, reiserfs_security
55 * must be released using reiserfs_security_free when the caller is done. */ 55 * must be released using reiserfs_security_free when the caller is done. */
56int reiserfs_security_init(struct inode *dir, struct inode *inode, 56int reiserfs_security_init(struct inode *dir, struct inode *inode,
57 const struct qstr *qstr,
57 struct reiserfs_security_handle *sec) 58 struct reiserfs_security_handle *sec)
58{ 59{
59 int blocks = 0; 60 int blocks = 0;
@@ -65,7 +66,7 @@ int reiserfs_security_init(struct inode *dir, struct inode *inode,
65 if (IS_PRIVATE(dir)) 66 if (IS_PRIVATE(dir))
66 return 0; 67 return 0;
67 68
68 error = security_inode_init_security(inode, dir, &sec->name, 69 error = security_inode_init_security(inode, dir, qstr, &sec->name,
69 &sec->value, &sec->length); 70 &sec->value, &sec->length);
70 if (error) { 71 if (error) {
71 if (error == -EOPNOTSUPP) 72 if (error == -EOPNOTSUPP)
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index bd5727852fd6..9ff7fc603d2f 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -102,7 +102,8 @@ xfs_mark_inode_dirty(
102STATIC int 102STATIC int
103xfs_init_security( 103xfs_init_security(
104 struct inode *inode, 104 struct inode *inode,
105 struct inode *dir) 105 struct inode *dir,
106 const struct qstr *qstr)
106{ 107{
107 struct xfs_inode *ip = XFS_I(inode); 108 struct xfs_inode *ip = XFS_I(inode);
108 size_t length; 109 size_t length;
@@ -110,7 +111,7 @@ xfs_init_security(
110 unsigned char *name; 111 unsigned char *name;
111 int error; 112 int error;
112 113
113 error = security_inode_init_security(inode, dir, (char **)&name, 114 error = security_inode_init_security(inode, dir, qstr, (char **)&name,
114 &value, &length); 115 &value, &length);
115 if (error) { 116 if (error) {
116 if (error == -EOPNOTSUPP) 117 if (error == -EOPNOTSUPP)
@@ -194,7 +195,7 @@ xfs_vn_mknod(
194 195
195 inode = VFS_I(ip); 196 inode = VFS_I(ip);
196 197
197 error = xfs_init_security(inode, dir); 198 error = xfs_init_security(inode, dir, &dentry->d_name);
198 if (unlikely(error)) 199 if (unlikely(error))
199 goto out_cleanup_inode; 200 goto out_cleanup_inode;
200 201
@@ -367,7 +368,7 @@ xfs_vn_symlink(
367 368
368 inode = VFS_I(cip); 369 inode = VFS_I(cip);
369 370
370 error = xfs_init_security(inode, dir); 371 error = xfs_init_security(inode, dir, &dentry->d_name);
371 if (unlikely(error)) 372 if (unlikely(error))
372 goto out_cleanup_inode; 373 goto out_cleanup_inode;
373 374
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index 65990ef612f5..6043c64c207a 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -884,7 +884,8 @@ extern int ext3fs_dirhash(const char *name, int len, struct
884 dx_hash_info *hinfo); 884 dx_hash_info *hinfo);
885 885
886/* ialloc.c */ 886/* ialloc.c */
887extern struct inode * ext3_new_inode (handle_t *, struct inode *, int); 887extern struct inode * ext3_new_inode (handle_t *, struct inode *,
888 const struct qstr *, int);
888extern void ext3_free_inode (handle_t *, struct inode *); 889extern void ext3_free_inode (handle_t *, struct inode *);
889extern struct inode * ext3_orphan_get (struct super_block *, unsigned long); 890extern struct inode * ext3_orphan_get (struct super_block *, unsigned long);
890extern unsigned long ext3_count_free_inodes (struct super_block *); 891extern unsigned long ext3_count_free_inodes (struct super_block *);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 13df14e2c42e..2f5a71d6d766 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -801,8 +801,7 @@ struct inode {
801#endif 801#endif
802 802
803#ifdef CONFIG_IMA 803#ifdef CONFIG_IMA
804 /* protected by i_lock */ 804 atomic_t i_readcount; /* struct files open RO */
805 unsigned int i_readcount; /* struct files open RO */
806#endif 805#endif
807 atomic_t i_writecount; 806 atomic_t i_writecount;
808#ifdef CONFIG_SECURITY 807#ifdef CONFIG_SECURITY
@@ -2215,6 +2214,26 @@ static inline void allow_write_access(struct file *file)
2215 if (file) 2214 if (file)
2216 atomic_inc(&file->f_path.dentry->d_inode->i_writecount); 2215 atomic_inc(&file->f_path.dentry->d_inode->i_writecount);
2217} 2216}
2217#ifdef CONFIG_IMA
2218static inline void i_readcount_dec(struct inode *inode)
2219{
2220 BUG_ON(!atomic_read(&inode->i_readcount));
2221 atomic_dec(&inode->i_readcount);
2222}
2223static inline void i_readcount_inc(struct inode *inode)
2224{
2225 atomic_inc(&inode->i_readcount);
2226}
2227#else
2228static inline void i_readcount_dec(struct inode *inode)
2229{
2230 return;
2231}
2232static inline void i_readcount_inc(struct inode *inode)
2233{
2234 return;
2235}
2236#endif
2218extern int do_pipe_flags(int *, int); 2237extern int do_pipe_flags(int *, int);
2219extern struct file *create_read_pipe(struct file *f, int flags); 2238extern struct file *create_read_pipe(struct file *f, int flags);
2220extern struct file *create_write_pipe(int flags); 2239extern struct file *create_write_pipe(int flags);
diff --git a/include/linux/ima.h b/include/linux/ima.h
index 975837e7d6c0..09e6e62f9953 100644
--- a/include/linux/ima.h
+++ b/include/linux/ima.h
@@ -20,7 +20,6 @@ extern void ima_inode_free(struct inode *inode);
20extern int ima_file_check(struct file *file, int mask); 20extern int ima_file_check(struct file *file, int mask);
21extern void ima_file_free(struct file *file); 21extern void ima_file_free(struct file *file);
22extern int ima_file_mmap(struct file *file, unsigned long prot); 22extern int ima_file_mmap(struct file *file, unsigned long prot);
23extern void ima_counts_get(struct file *file);
24 23
25#else 24#else
26static inline int ima_bprm_check(struct linux_binprm *bprm) 25static inline int ima_bprm_check(struct linux_binprm *bprm)
@@ -53,10 +52,5 @@ static inline int ima_file_mmap(struct file *file, unsigned long prot)
53 return 0; 52 return 0;
54} 53}
55 54
56static inline void ima_counts_get(struct file *file)
57{
58 return;
59}
60
61#endif /* CONFIG_IMA_H */ 55#endif /* CONFIG_IMA_H */
62#endif /* _LINUX_IMA_H */ 56#endif /* _LINUX_IMA_H */
diff --git a/include/linux/key-type.h b/include/linux/key-type.h
index 65833d4d5998..9efd081bb31e 100644
--- a/include/linux/key-type.h
+++ b/include/linux/key-type.h
@@ -41,6 +41,9 @@ struct key_type {
41 */ 41 */
42 size_t def_datalen; 42 size_t def_datalen;
43 43
44 /* vet a description */
45 int (*vet_description)(const char *description);
46
44 /* instantiate a key of this type 47 /* instantiate a key of this type
45 * - this method should call key_payload_reserve() to determine if the 48 * - this method should call key_payload_reserve() to determine if the
46 * user's quota will hold the payload 49 * user's quota will hold the payload
@@ -102,11 +105,20 @@ extern int key_instantiate_and_link(struct key *key,
102 size_t datalen, 105 size_t datalen,
103 struct key *keyring, 106 struct key *keyring,
104 struct key *instkey); 107 struct key *instkey);
105extern int key_negate_and_link(struct key *key, 108extern int key_reject_and_link(struct key *key,
106 unsigned timeout, 109 unsigned timeout,
110 unsigned error,
107 struct key *keyring, 111 struct key *keyring,
108 struct key *instkey); 112 struct key *instkey);
109extern void complete_request_key(struct key_construction *cons, int error); 113extern void complete_request_key(struct key_construction *cons, int error);
110 114
115static inline int key_negate_and_link(struct key *key,
116 unsigned timeout,
117 struct key *keyring,
118 struct key *instkey)
119{
120 return key_reject_and_link(key, timeout, ENOKEY, keyring, instkey);
121}
122
111#endif /* CONFIG_KEYS */ 123#endif /* CONFIG_KEYS */
112#endif /* _LINUX_KEY_TYPE_H */ 124#endif /* _LINUX_KEY_TYPE_H */
diff --git a/include/linux/key.h b/include/linux/key.h
index 3db0adce1fda..b2bb01719561 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -170,6 +170,7 @@ struct key {
170 struct list_head link; 170 struct list_head link;
171 unsigned long x[2]; 171 unsigned long x[2];
172 void *p[2]; 172 void *p[2];
173 int reject_error;
173 } type_data; 174 } type_data;
174 175
175 /* key data 176 /* key data
@@ -275,6 +276,10 @@ static inline key_serial_t key_serial(struct key *key)
275 return key ? key->serial : 0; 276 return key ? key->serial : 0;
276} 277}
277 278
279#define rcu_dereference_key(KEY) \
280 (rcu_dereference_protected((KEY)->payload.rcudata, \
281 rwsem_is_locked(&((struct key *)(KEY))->sem)))
282
278#ifdef CONFIG_SYSCTL 283#ifdef CONFIG_SYSCTL
279extern ctl_table key_sysctls[]; 284extern ctl_table key_sysctls[];
280#endif 285#endif
diff --git a/include/linux/keyctl.h b/include/linux/keyctl.h
index bd383f1944fb..9b0b865ce622 100644
--- a/include/linux/keyctl.h
+++ b/include/linux/keyctl.h
@@ -53,5 +53,7 @@
53#define KEYCTL_ASSUME_AUTHORITY 16 /* assume request_key() authorisation */ 53#define KEYCTL_ASSUME_AUTHORITY 16 /* assume request_key() authorisation */
54#define KEYCTL_GET_SECURITY 17 /* get key security label */ 54#define KEYCTL_GET_SECURITY 17 /* get key security label */
55#define KEYCTL_SESSION_TO_PARENT 18 /* apply session keyring to parent process */ 55#define KEYCTL_SESSION_TO_PARENT 18 /* apply session keyring to parent process */
56#define KEYCTL_REJECT 19 /* reject a partially constructed key */
57#define KEYCTL_INSTANTIATE_IOV 20 /* instantiate a partially constructed key */
56 58
57#endif /* _LINUX_KEYCTL_H */ 59#endif /* _LINUX_KEYCTL_H */
diff --git a/include/linux/reiserfs_xattr.h b/include/linux/reiserfs_xattr.h
index 3b94c91f20a6..6deef5dc95fb 100644
--- a/include/linux/reiserfs_xattr.h
+++ b/include/linux/reiserfs_xattr.h
@@ -63,6 +63,7 @@ extern const struct xattr_handler reiserfs_xattr_trusted_handler;
63extern const struct xattr_handler reiserfs_xattr_security_handler; 63extern const struct xattr_handler reiserfs_xattr_security_handler;
64#ifdef CONFIG_REISERFS_FS_SECURITY 64#ifdef CONFIG_REISERFS_FS_SECURITY
65int reiserfs_security_init(struct inode *dir, struct inode *inode, 65int reiserfs_security_init(struct inode *dir, struct inode *inode,
66 const struct qstr *qstr,
66 struct reiserfs_security_handle *sec); 67 struct reiserfs_security_handle *sec);
67int reiserfs_security_write(struct reiserfs_transaction_handle *th, 68int reiserfs_security_write(struct reiserfs_transaction_handle *th,
68 struct inode *inode, 69 struct inode *inode,
@@ -130,6 +131,7 @@ static inline void reiserfs_init_xattr_rwsem(struct inode *inode)
130#ifndef CONFIG_REISERFS_FS_SECURITY 131#ifndef CONFIG_REISERFS_FS_SECURITY
131static inline int reiserfs_security_init(struct inode *dir, 132static inline int reiserfs_security_init(struct inode *dir,
132 struct inode *inode, 133 struct inode *inode,
134 const struct qstr *qstr,
133 struct reiserfs_security_handle *sec) 135 struct reiserfs_security_handle *sec)
134{ 136{
135 return 0; 137 return 0;
diff --git a/include/linux/security.h b/include/linux/security.h
index debbd97db7ab..83d9227abf02 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -25,6 +25,7 @@
25#include <linux/fs.h> 25#include <linux/fs.h>
26#include <linux/fsnotify.h> 26#include <linux/fsnotify.h>
27#include <linux/binfmts.h> 27#include <linux/binfmts.h>
28#include <linux/dcache.h>
28#include <linux/signal.h> 29#include <linux/signal.h>
29#include <linux/resource.h> 30#include <linux/resource.h>
30#include <linux/sem.h> 31#include <linux/sem.h>
@@ -267,6 +268,12 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
267 * @orig the original mount data copied from userspace. 268 * @orig the original mount data copied from userspace.
268 * @copy copied data which will be passed to the security module. 269 * @copy copied data which will be passed to the security module.
269 * Returns 0 if the copy was successful. 270 * Returns 0 if the copy was successful.
271 * @sb_remount:
272 * Extracts security system specifc mount options and verifys no changes
273 * are being made to those options.
274 * @sb superblock being remounted
275 * @data contains the filesystem-specific data.
276 * Return 0 if permission is granted.
270 * @sb_umount: 277 * @sb_umount:
271 * Check permission before the @mnt file system is unmounted. 278 * Check permission before the @mnt file system is unmounted.
272 * @mnt contains the mounted file system. 279 * @mnt contains the mounted file system.
@@ -315,6 +322,7 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
315 * then it should return -EOPNOTSUPP to skip this processing. 322 * then it should return -EOPNOTSUPP to skip this processing.
316 * @inode contains the inode structure of the newly created inode. 323 * @inode contains the inode structure of the newly created inode.
317 * @dir contains the inode structure of the parent directory. 324 * @dir contains the inode structure of the parent directory.
325 * @qstr contains the last path component of the new object
318 * @name will be set to the allocated name suffix (e.g. selinux). 326 * @name will be set to the allocated name suffix (e.g. selinux).
319 * @value will be set to the allocated attribute value. 327 * @value will be set to the allocated attribute value.
320 * @len will be set to the length of the value. 328 * @len will be set to the length of the value.
@@ -1257,12 +1265,6 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
1257 * @cap contains the capability <include/linux/capability.h>. 1265 * @cap contains the capability <include/linux/capability.h>.
1258 * @audit: Whether to write an audit message or not 1266 * @audit: Whether to write an audit message or not
1259 * Return 0 if the capability is granted for @tsk. 1267 * Return 0 if the capability is granted for @tsk.
1260 * @sysctl:
1261 * Check permission before accessing the @table sysctl variable in the
1262 * manner specified by @op.
1263 * @table contains the ctl_table structure for the sysctl variable.
1264 * @op contains the operation (001 = search, 002 = write, 004 = read).
1265 * Return 0 if permission is granted.
1266 * @syslog: 1268 * @syslog:
1267 * Check permission before accessing the kernel message ring or changing 1269 * Check permission before accessing the kernel message ring or changing
1268 * logging to the console. 1270 * logging to the console.
@@ -1383,7 +1385,6 @@ struct security_operations {
1383 const kernel_cap_t *permitted); 1385 const kernel_cap_t *permitted);
1384 int (*capable) (struct task_struct *tsk, const struct cred *cred, 1386 int (*capable) (struct task_struct *tsk, const struct cred *cred,
1385 int cap, int audit); 1387 int cap, int audit);
1386 int (*sysctl) (struct ctl_table *table, int op);
1387 int (*quotactl) (int cmds, int type, int id, struct super_block *sb); 1388 int (*quotactl) (int cmds, int type, int id, struct super_block *sb);
1388 int (*quota_on) (struct dentry *dentry); 1389 int (*quota_on) (struct dentry *dentry);
1389 int (*syslog) (int type); 1390 int (*syslog) (int type);
@@ -1399,6 +1400,7 @@ struct security_operations {
1399 int (*sb_alloc_security) (struct super_block *sb); 1400 int (*sb_alloc_security) (struct super_block *sb);
1400 void (*sb_free_security) (struct super_block *sb); 1401 void (*sb_free_security) (struct super_block *sb);
1401 int (*sb_copy_data) (char *orig, char *copy); 1402 int (*sb_copy_data) (char *orig, char *copy);
1403 int (*sb_remount) (struct super_block *sb, void *data);
1402 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data); 1404 int (*sb_kern_mount) (struct super_block *sb, int flags, void *data);
1403 int (*sb_show_options) (struct seq_file *m, struct super_block *sb); 1405 int (*sb_show_options) (struct seq_file *m, struct super_block *sb);
1404 int (*sb_statfs) (struct dentry *dentry); 1406 int (*sb_statfs) (struct dentry *dentry);
@@ -1435,7 +1437,8 @@ struct security_operations {
1435 int (*inode_alloc_security) (struct inode *inode); 1437 int (*inode_alloc_security) (struct inode *inode);
1436 void (*inode_free_security) (struct inode *inode); 1438 void (*inode_free_security) (struct inode *inode);
1437 int (*inode_init_security) (struct inode *inode, struct inode *dir, 1439 int (*inode_init_security) (struct inode *inode, struct inode *dir,
1438 char **name, void **value, size_t *len); 1440 const struct qstr *qstr, char **name,
1441 void **value, size_t *len);
1439 int (*inode_create) (struct inode *dir, 1442 int (*inode_create) (struct inode *dir,
1440 struct dentry *dentry, int mode); 1443 struct dentry *dentry, int mode);
1441 int (*inode_link) (struct dentry *old_dentry, 1444 int (*inode_link) (struct dentry *old_dentry,
@@ -1665,7 +1668,6 @@ int security_capset(struct cred *new, const struct cred *old,
1665int security_capable(const struct cred *cred, int cap); 1668int security_capable(const struct cred *cred, int cap);
1666int security_real_capable(struct task_struct *tsk, int cap); 1669int security_real_capable(struct task_struct *tsk, int cap);
1667int security_real_capable_noaudit(struct task_struct *tsk, int cap); 1670int security_real_capable_noaudit(struct task_struct *tsk, int cap);
1668int security_sysctl(struct ctl_table *table, int op);
1669int security_quotactl(int cmds, int type, int id, struct super_block *sb); 1671int security_quotactl(int cmds, int type, int id, struct super_block *sb);
1670int security_quota_on(struct dentry *dentry); 1672int security_quota_on(struct dentry *dentry);
1671int security_syslog(int type); 1673int security_syslog(int type);
@@ -1681,6 +1683,7 @@ int security_bprm_secureexec(struct linux_binprm *bprm);
1681int security_sb_alloc(struct super_block *sb); 1683int security_sb_alloc(struct super_block *sb);
1682void security_sb_free(struct super_block *sb); 1684void security_sb_free(struct super_block *sb);
1683int security_sb_copy_data(char *orig, char *copy); 1685int security_sb_copy_data(char *orig, char *copy);
1686int security_sb_remount(struct super_block *sb, void *data);
1684int security_sb_kern_mount(struct super_block *sb, int flags, void *data); 1687int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
1685int security_sb_show_options(struct seq_file *m, struct super_block *sb); 1688int security_sb_show_options(struct seq_file *m, struct super_block *sb);
1686int security_sb_statfs(struct dentry *dentry); 1689int security_sb_statfs(struct dentry *dentry);
@@ -1696,7 +1699,8 @@ int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
1696int security_inode_alloc(struct inode *inode); 1699int security_inode_alloc(struct inode *inode);
1697void security_inode_free(struct inode *inode); 1700void security_inode_free(struct inode *inode);
1698int security_inode_init_security(struct inode *inode, struct inode *dir, 1701int security_inode_init_security(struct inode *inode, struct inode *dir,
1699 char **name, void **value, size_t *len); 1702 const struct qstr *qstr, char **name,
1703 void **value, size_t *len);
1700int security_inode_create(struct inode *dir, struct dentry *dentry, int mode); 1704int security_inode_create(struct inode *dir, struct dentry *dentry, int mode);
1701int security_inode_link(struct dentry *old_dentry, struct inode *dir, 1705int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1702 struct dentry *new_dentry); 1706 struct dentry *new_dentry);
@@ -1883,11 +1887,6 @@ int security_real_capable_noaudit(struct task_struct *tsk, int cap)
1883 return ret; 1887 return ret;
1884} 1888}
1885 1889
1886static inline int security_sysctl(struct ctl_table *table, int op)
1887{
1888 return 0;
1889}
1890
1891static inline int security_quotactl(int cmds, int type, int id, 1890static inline int security_quotactl(int cmds, int type, int id,
1892 struct super_block *sb) 1891 struct super_block *sb)
1893{ 1892{
@@ -1965,6 +1964,11 @@ static inline int security_sb_copy_data(char *orig, char *copy)
1965 return 0; 1964 return 0;
1966} 1965}
1967 1966
1967static inline int security_sb_remount(struct super_block *sb, void *data)
1968{
1969 return 0;
1970}
1971
1968static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 1972static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
1969{ 1973{
1970 return 0; 1974 return 0;
@@ -2024,6 +2028,7 @@ static inline void security_inode_free(struct inode *inode)
2024 2028
2025static inline int security_inode_init_security(struct inode *inode, 2029static inline int security_inode_init_security(struct inode *inode,
2026 struct inode *dir, 2030 struct inode *dir,
2031 const struct qstr *qstr,
2027 char **name, 2032 char **name,
2028 void **value, 2033 void **value,
2029 size_t *len) 2034 size_t *len)
diff --git a/include/linux/xattr.h b/include/linux/xattr.h
index e6131ef98d8f..6050783005bd 100644
--- a/include/linux/xattr.h
+++ b/include/linux/xattr.h
@@ -42,11 +42,13 @@
42#define XATTR_SMACK_IPOUT "SMACK64IPOUT" 42#define XATTR_SMACK_IPOUT "SMACK64IPOUT"
43#define XATTR_SMACK_EXEC "SMACK64EXEC" 43#define XATTR_SMACK_EXEC "SMACK64EXEC"
44#define XATTR_SMACK_TRANSMUTE "SMACK64TRANSMUTE" 44#define XATTR_SMACK_TRANSMUTE "SMACK64TRANSMUTE"
45#define XATTR_SMACK_MMAP "SMACK64MMAP"
45#define XATTR_NAME_SMACK XATTR_SECURITY_PREFIX XATTR_SMACK_SUFFIX 46#define XATTR_NAME_SMACK XATTR_SECURITY_PREFIX XATTR_SMACK_SUFFIX
46#define XATTR_NAME_SMACKIPIN XATTR_SECURITY_PREFIX XATTR_SMACK_IPIN 47#define XATTR_NAME_SMACKIPIN XATTR_SECURITY_PREFIX XATTR_SMACK_IPIN
47#define XATTR_NAME_SMACKIPOUT XATTR_SECURITY_PREFIX XATTR_SMACK_IPOUT 48#define XATTR_NAME_SMACKIPOUT XATTR_SECURITY_PREFIX XATTR_SMACK_IPOUT
48#define XATTR_NAME_SMACKEXEC XATTR_SECURITY_PREFIX XATTR_SMACK_EXEC 49#define XATTR_NAME_SMACKEXEC XATTR_SECURITY_PREFIX XATTR_SMACK_EXEC
49#define XATTR_NAME_SMACKTRANSMUTE XATTR_SECURITY_PREFIX XATTR_SMACK_TRANSMUTE 50#define XATTR_NAME_SMACKTRANSMUTE XATTR_SECURITY_PREFIX XATTR_SMACK_TRANSMUTE
51#define XATTR_NAME_SMACKMMAP XATTR_SECURITY_PREFIX XATTR_SMACK_MMAP
50 52
51#define XATTR_CAPS_SUFFIX "capability" 53#define XATTR_CAPS_SUFFIX "capability"
52#define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX 54#define XATTR_NAME_CAPS XATTR_SECURITY_PREFIX XATTR_CAPS_SUFFIX
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 51054fea5d99..40245d697602 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1683,13 +1683,8 @@ static int test_perm(int mode, int op)
1683 1683
1684int sysctl_perm(struct ctl_table_root *root, struct ctl_table *table, int op) 1684int sysctl_perm(struct ctl_table_root *root, struct ctl_table *table, int op)
1685{ 1685{
1686 int error;
1687 int mode; 1686 int mode;
1688 1687
1689 error = security_sysctl(table, op & (MAY_READ | MAY_WRITE | MAY_EXEC));
1690 if (error)
1691 return error;
1692
1693 if (root->permissions) 1688 if (root->permissions)
1694 mode = root->permissions(root, current->nsproxy, table); 1689 mode = root->permissions(root, current->nsproxy, table);
1695 else 1690 else
diff --git a/mm/shmem.c b/mm/shmem.c
index 3437b65d6d6e..41f82bb59eec 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1843,8 +1843,9 @@ shmem_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
1843 1843
1844 inode = shmem_get_inode(dir->i_sb, dir, mode, dev, VM_NORESERVE); 1844 inode = shmem_get_inode(dir->i_sb, dir, mode, dev, VM_NORESERVE);
1845 if (inode) { 1845 if (inode) {
1846 error = security_inode_init_security(inode, dir, NULL, NULL, 1846 error = security_inode_init_security(inode, dir,
1847 NULL); 1847 &dentry->d_name, NULL,
1848 NULL, NULL);
1848 if (error) { 1849 if (error) {
1849 if (error != -EOPNOTSUPP) { 1850 if (error != -EOPNOTSUPP) {
1850 iput(inode); 1851 iput(inode);
@@ -1983,8 +1984,8 @@ static int shmem_symlink(struct inode *dir, struct dentry *dentry, const char *s
1983 if (!inode) 1984 if (!inode)
1984 return -ENOSPC; 1985 return -ENOSPC;
1985 1986
1986 error = security_inode_init_security(inode, dir, NULL, NULL, 1987 error = security_inode_init_security(inode, dir, &dentry->d_name, NULL,
1987 NULL); 1988 NULL, NULL);
1988 if (error) { 1989 if (error) {
1989 if (error != -EOPNOTSUPP) { 1990 if (error != -EOPNOTSUPP) {
1990 iput(inode); 1991 iput(inode);
diff --git a/net/rxrpc/ar-key.c b/net/rxrpc/ar-key.c
index d763793d39de..43ea7de2fc8e 100644
--- a/net/rxrpc/ar-key.c
+++ b/net/rxrpc/ar-key.c
@@ -25,6 +25,7 @@
25#include <keys/user-type.h> 25#include <keys/user-type.h>
26#include "ar-internal.h" 26#include "ar-internal.h"
27 27
28static int rxrpc_vet_description_s(const char *);
28static int rxrpc_instantiate(struct key *, const void *, size_t); 29static int rxrpc_instantiate(struct key *, const void *, size_t);
29static int rxrpc_instantiate_s(struct key *, const void *, size_t); 30static int rxrpc_instantiate_s(struct key *, const void *, size_t);
30static void rxrpc_destroy(struct key *); 31static void rxrpc_destroy(struct key *);
@@ -52,6 +53,7 @@ EXPORT_SYMBOL(key_type_rxrpc);
52 */ 53 */
53struct key_type key_type_rxrpc_s = { 54struct key_type key_type_rxrpc_s = {
54 .name = "rxrpc_s", 55 .name = "rxrpc_s",
56 .vet_description = rxrpc_vet_description_s,
55 .instantiate = rxrpc_instantiate_s, 57 .instantiate = rxrpc_instantiate_s,
56 .match = user_match, 58 .match = user_match,
57 .destroy = rxrpc_destroy_s, 59 .destroy = rxrpc_destroy_s,
@@ -59,6 +61,23 @@ struct key_type key_type_rxrpc_s = {
59}; 61};
60 62
61/* 63/*
64 * Vet the description for an RxRPC server key
65 */
66static int rxrpc_vet_description_s(const char *desc)
67{
68 unsigned long num;
69 char *p;
70
71 num = simple_strtoul(desc, &p, 10);
72 if (*p != ':' || num > 65535)
73 return -EINVAL;
74 num = simple_strtoul(p + 1, &p, 10);
75 if (*p || num < 1 || num > 255)
76 return -EINVAL;
77 return 0;
78}
79
80/*
62 * parse an RxKAD type XDR format token 81 * parse an RxKAD type XDR format token
63 * - the caller guarantees we have at least 4 words 82 * - the caller guarantees we have at least 4 words
64 */ 83 */
diff --git a/scripts/selinux/genheaders/genheaders.c b/scripts/selinux/genheaders/genheaders.c
index 58a12c278706..539855ff31f9 100644
--- a/scripts/selinux/genheaders/genheaders.c
+++ b/scripts/selinux/genheaders/genheaders.c
@@ -43,6 +43,8 @@ int main(int argc, char *argv[])
43 int i, j, k; 43 int i, j, k;
44 int isids_len; 44 int isids_len;
45 FILE *fout; 45 FILE *fout;
46 const char *needle = "SOCKET";
47 char *substr;
46 48
47 progname = argv[0]; 49 progname = argv[0];
48 50
@@ -88,6 +90,24 @@ int main(int argc, char *argv[])
88 fprintf(fout, "%2d\n", i); 90 fprintf(fout, "%2d\n", i);
89 } 91 }
90 fprintf(fout, "\n#define SECINITSID_NUM %d\n", i-1); 92 fprintf(fout, "\n#define SECINITSID_NUM %d\n", i-1);
93 fprintf(fout, "\nstatic inline bool security_is_socket_class(u16 kern_tclass)\n");
94 fprintf(fout, "{\n");
95 fprintf(fout, "\tbool sock = false;\n\n");
96 fprintf(fout, "\tswitch (kern_tclass) {\n");
97 for (i = 0; secclass_map[i].name; i++) {
98 struct security_class_mapping *map = &secclass_map[i];
99 substr = strstr(map->name, needle);
100 if (substr && strcmp(substr, needle) == 0)
101 fprintf(fout, "\tcase SECCLASS_%s:\n", map->name);
102 }
103 fprintf(fout, "\t\tsock = true;\n");
104 fprintf(fout, "\t\tbreak;\n");
105 fprintf(fout, "\tdefault:\n");
106 fprintf(fout, "\t\tbreak;\n");
107 fprintf(fout, "\t}\n\n");
108 fprintf(fout, "\treturn sock;\n");
109 fprintf(fout, "}\n");
110
91 fprintf(fout, "\n#endif\n"); 111 fprintf(fout, "\n#endif\n");
92 fclose(fout); 112 fclose(fout);
93 113
diff --git a/security/apparmor/Makefile b/security/apparmor/Makefile
index f204869399ea..2dafe50a2e25 100644
--- a/security/apparmor/Makefile
+++ b/security/apparmor/Makefile
@@ -6,19 +6,47 @@ apparmor-y := apparmorfs.o audit.o capability.o context.o ipc.o lib.o match.o \
6 path.o domain.o policy.o policy_unpack.o procattr.o lsm.o \ 6 path.o domain.o policy.o policy_unpack.o procattr.o lsm.o \
7 resource.o sid.o file.o 7 resource.o sid.o file.o
8 8
9clean-files: capability_names.h af_names.h 9clean-files := capability_names.h rlim_names.h
10 10
11
12# Build a lower case string table of capability names
13# Transforms lines from
14# #define CAP_DAC_OVERRIDE 1
15# to
16# [1] = "dac_override",
11quiet_cmd_make-caps = GEN $@ 17quiet_cmd_make-caps = GEN $@
12cmd_make-caps = echo "static const char *capability_names[] = {" > $@ ; sed -n -e "/CAP_FS_MASK/d" -e "s/^\#define[ \\t]\\+CAP_\\([A-Z0-9_]\\+\\)[ \\t]\\+\\([0-9]\\+\\)\$$/[\\2] = \"\\1\",/p" $< | tr A-Z a-z >> $@ ; echo "};" >> $@ 18cmd_make-caps = echo "static const char *capability_names[] = {" > $@ ;\
19 sed $< >>$@ -r -n -e '/CAP_FS_MASK/d' \
20 -e 's/^\#define[ \t]+CAP_([A-Z0-9_]+)[ \t]+([0-9]+)/[\2] = "\L\1",/p';\
21 echo "};" >> $@
22
13 23
24# Build a lower case string table of rlimit names.
25# Transforms lines from
26# #define RLIMIT_STACK 3 /* max stack size */
27# to
28# [RLIMIT_STACK] = "stack",
29#
30# and build a second integer table (with the second sed cmd), that maps
31# RLIMIT defines to the order defined in asm-generic/resource.h Thi is
32# required by policy load to map policy ordering of RLIMITs to internal
33# ordering for architectures that redefine an RLIMIT.
34# Transforms lines from
35# #define RLIMIT_STACK 3 /* max stack size */
36# to
37# RLIMIT_STACK,
14quiet_cmd_make-rlim = GEN $@ 38quiet_cmd_make-rlim = GEN $@
15cmd_make-rlim = echo "static const char *rlim_names[] = {" > $@ ; sed -n --e "/AF_MAX/d" -e "s/^\# \\?define[ \\t]\\+RLIMIT_\\([A-Z0-9_]\\+\\)[ \\t]\\+\\([0-9]\\+\\)\\(.*\\)\$$/[\\2] = \"\\1\",/p" $< | tr A-Z a-z >> $@ ; echo "};" >> $@ ; echo "static const int rlim_map[] = {" >> $@ ; sed -n -e "/AF_MAX/d" -e "s/^\# \\?define[ \\t]\\+\\(RLIMIT_[A-Z0-9_]\\+\\)[ \\t]\\+\\([0-9]\\+\\)\\(.*\\)\$$/\\1,/p" $< >> $@ ; echo "};" >> $@ 39cmd_make-rlim = echo "static const char *rlim_names[] = {" > $@ ;\
40 sed $< >> $@ -r -n \
41 -e 's/^\# ?define[ \t]+(RLIMIT_([A-Z0-9_]+)).*/[\1] = "\L\2",/p';\
42 echo "};" >> $@ ;\
43 echo "static const int rlim_map[] = {" >> $@ ;\
44 sed -r -n "s/^\# ?define[ \t]+(RLIMIT_[A-Z0-9_]+).*/\1,/p" $< >> $@ ;\
45 echo "};" >> $@
16 46
17$(obj)/capability.o : $(obj)/capability_names.h 47$(obj)/capability.o : $(obj)/capability_names.h
18$(obj)/resource.o : $(obj)/rlim_names.h 48$(obj)/resource.o : $(obj)/rlim_names.h
19$(obj)/capability_names.h : $(srctree)/include/linux/capability.h 49$(obj)/capability_names.h : $(srctree)/include/linux/capability.h
20 $(call cmd,make-caps) 50 $(call cmd,make-caps)
21$(obj)/af_names.h : $(srctree)/include/linux/socket.h
22 $(call cmd,make-af)
23$(obj)/rlim_names.h : $(srctree)/include/asm-generic/resource.h 51$(obj)/rlim_names.h : $(srctree)/include/asm-generic/resource.h
24 $(call cmd,make-rlim) 52 $(call cmd,make-rlim)
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index b7106f192b75..d21a427a35ae 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -693,11 +693,9 @@ static struct kernel_param_ops param_ops_aalockpolicy = {
693 693
694static int param_set_audit(const char *val, struct kernel_param *kp); 694static int param_set_audit(const char *val, struct kernel_param *kp);
695static int param_get_audit(char *buffer, struct kernel_param *kp); 695static int param_get_audit(char *buffer, struct kernel_param *kp);
696#define param_check_audit(name, p) __param_check(name, p, int)
697 696
698static int param_set_mode(const char *val, struct kernel_param *kp); 697static int param_set_mode(const char *val, struct kernel_param *kp);
699static int param_get_mode(char *buffer, struct kernel_param *kp); 698static int param_get_mode(char *buffer, struct kernel_param *kp);
700#define param_check_mode(name, p) __param_check(name, p, int)
701 699
702/* Flag values, also controllable via /sys/module/apparmor/parameters 700/* Flag values, also controllable via /sys/module/apparmor/parameters
703 * We define special types as we want to do additional mediation. 701 * We define special types as we want to do additional mediation.
diff --git a/security/capability.c b/security/capability.c
index 2a5df2b7da83..ab3d807accc3 100644
--- a/security/capability.c
+++ b/security/capability.c
@@ -12,11 +12,6 @@
12 12
13#include <linux/security.h> 13#include <linux/security.h>
14 14
15static int cap_sysctl(ctl_table *table, int op)
16{
17 return 0;
18}
19
20static int cap_syslog(int type) 15static int cap_syslog(int type)
21{ 16{
22 return 0; 17 return 0;
@@ -59,6 +54,11 @@ static int cap_sb_copy_data(char *orig, char *copy)
59 return 0; 54 return 0;
60} 55}
61 56
57static int cap_sb_remount(struct super_block *sb, void *data)
58{
59 return 0;
60}
61
62static int cap_sb_kern_mount(struct super_block *sb, int flags, void *data) 62static int cap_sb_kern_mount(struct super_block *sb, int flags, void *data)
63{ 63{
64 return 0; 64 return 0;
@@ -118,7 +118,8 @@ static void cap_inode_free_security(struct inode *inode)
118} 118}
119 119
120static int cap_inode_init_security(struct inode *inode, struct inode *dir, 120static int cap_inode_init_security(struct inode *inode, struct inode *dir,
121 char **name, void **value, size_t *len) 121 const struct qstr *qstr, char **name,
122 void **value, size_t *len)
122{ 123{
123 return -EOPNOTSUPP; 124 return -EOPNOTSUPP;
124} 125}
@@ -880,7 +881,6 @@ void __init security_fixup_ops(struct security_operations *ops)
880 set_to_cap_if_null(ops, capable); 881 set_to_cap_if_null(ops, capable);
881 set_to_cap_if_null(ops, quotactl); 882 set_to_cap_if_null(ops, quotactl);
882 set_to_cap_if_null(ops, quota_on); 883 set_to_cap_if_null(ops, quota_on);
883 set_to_cap_if_null(ops, sysctl);
884 set_to_cap_if_null(ops, syslog); 884 set_to_cap_if_null(ops, syslog);
885 set_to_cap_if_null(ops, settime); 885 set_to_cap_if_null(ops, settime);
886 set_to_cap_if_null(ops, vm_enough_memory); 886 set_to_cap_if_null(ops, vm_enough_memory);
@@ -892,6 +892,7 @@ void __init security_fixup_ops(struct security_operations *ops)
892 set_to_cap_if_null(ops, sb_alloc_security); 892 set_to_cap_if_null(ops, sb_alloc_security);
893 set_to_cap_if_null(ops, sb_free_security); 893 set_to_cap_if_null(ops, sb_free_security);
894 set_to_cap_if_null(ops, sb_copy_data); 894 set_to_cap_if_null(ops, sb_copy_data);
895 set_to_cap_if_null(ops, sb_remount);
895 set_to_cap_if_null(ops, sb_kern_mount); 896 set_to_cap_if_null(ops, sb_kern_mount);
896 set_to_cap_if_null(ops, sb_show_options); 897 set_to_cap_if_null(ops, sb_show_options);
897 set_to_cap_if_null(ops, sb_statfs); 898 set_to_cap_if_null(ops, sb_statfs);
diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h
index ac79032bdf23..08408bd71462 100644
--- a/security/integrity/ima/ima.h
+++ b/security/integrity/ima/ima.h
@@ -110,8 +110,7 @@ struct ima_iint_cache {
110}; 110};
111 111
112/* LIM API function definitions */ 112/* LIM API function definitions */
113int ima_must_measure(struct ima_iint_cache *iint, struct inode *inode, 113int ima_must_measure(struct inode *inode, int mask, int function);
114 int mask, int function);
115int ima_collect_measurement(struct ima_iint_cache *iint, struct file *file); 114int ima_collect_measurement(struct ima_iint_cache *iint, struct file *file);
116void ima_store_measurement(struct ima_iint_cache *iint, struct file *file, 115void ima_store_measurement(struct ima_iint_cache *iint, struct file *file,
117 const unsigned char *filename); 116 const unsigned char *filename);
diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c
index d3963de6003d..da36d2c085a4 100644
--- a/security/integrity/ima/ima_api.c
+++ b/security/integrity/ima/ima_api.c
@@ -105,20 +105,13 @@ err_out:
105 * mask: contains the permission mask 105 * mask: contains the permission mask
106 * fsmagic: hex value 106 * fsmagic: hex value
107 * 107 *
108 * Must be called with iint->mutex held. 108 * Return 0 to measure. For matching a DONT_MEASURE policy, no policy,
109 * 109 * or other error, return an error code.
110 * Return 0 to measure. Return 1 if already measured.
111 * For matching a DONT_MEASURE policy, no policy, or other
112 * error, return an error code.
113*/ 110*/
114int ima_must_measure(struct ima_iint_cache *iint, struct inode *inode, 111int ima_must_measure(struct inode *inode, int mask, int function)
115 int mask, int function)
116{ 112{
117 int must_measure; 113 int must_measure;
118 114
119 if (iint && iint->flags & IMA_MEASURED)
120 return 1;
121
122 must_measure = ima_match_policy(inode, function, mask); 115 must_measure = ima_match_policy(inode, function, mask);
123 return must_measure ? 0 : -EACCES; 116 return must_measure ? 0 : -EACCES;
124} 117}
diff --git a/security/integrity/ima/ima_iint.c b/security/integrity/ima/ima_iint.c
index c442e47b6785..4ae73040ab7b 100644
--- a/security/integrity/ima/ima_iint.c
+++ b/security/integrity/ima/ima_iint.c
@@ -137,11 +137,6 @@ void ima_inode_free(struct inode *inode)
137{ 137{
138 struct ima_iint_cache *iint; 138 struct ima_iint_cache *iint;
139 139
140 if (inode->i_readcount)
141 printk(KERN_INFO "%s: readcount: %u\n", __func__, inode->i_readcount);
142
143 inode->i_readcount = 0;
144
145 if (!IS_IMA(inode)) 140 if (!IS_IMA(inode))
146 return; 141 return;
147 142
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 203de979d305..39d66dc2b8e9 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -36,67 +36,17 @@ static int __init hash_setup(char *str)
36} 36}
37__setup("ima_hash=", hash_setup); 37__setup("ima_hash=", hash_setup);
38 38
39struct ima_imbalance {
40 struct hlist_node node;
41 unsigned long fsmagic;
42};
43
44/*
45 * ima_limit_imbalance - emit one imbalance message per filesystem type
46 *
47 * Maintain list of filesystem types that do not measure files properly.
48 * Return false if unknown, true if known.
49 */
50static bool ima_limit_imbalance(struct file *file)
51{
52 static DEFINE_SPINLOCK(ima_imbalance_lock);
53 static HLIST_HEAD(ima_imbalance_list);
54
55 struct super_block *sb = file->f_dentry->d_sb;
56 struct ima_imbalance *entry;
57 struct hlist_node *node;
58 bool found = false;
59
60 rcu_read_lock();
61 hlist_for_each_entry_rcu(entry, node, &ima_imbalance_list, node) {
62 if (entry->fsmagic == sb->s_magic) {
63 found = true;
64 break;
65 }
66 }
67 rcu_read_unlock();
68 if (found)
69 goto out;
70
71 entry = kmalloc(sizeof(*entry), GFP_NOFS);
72 if (!entry)
73 goto out;
74 entry->fsmagic = sb->s_magic;
75 spin_lock(&ima_imbalance_lock);
76 /*
77 * we could have raced and something else might have added this fs
78 * to the list, but we don't really care
79 */
80 hlist_add_head_rcu(&entry->node, &ima_imbalance_list);
81 spin_unlock(&ima_imbalance_lock);
82 printk(KERN_INFO "IMA: unmeasured files on fsmagic: %lX\n",
83 entry->fsmagic);
84out:
85 return found;
86}
87
88/* 39/*
89 * ima_counts_get - increment file counts 40 * ima_rdwr_violation_check
90 * 41 *
91 * Maintain read/write counters for all files, but only 42 * Only invalidate the PCR for measured files:
92 * invalidate the PCR for measured files:
93 * - Opening a file for write when already open for read, 43 * - Opening a file for write when already open for read,
94 * results in a time of measure, time of use (ToMToU) error. 44 * results in a time of measure, time of use (ToMToU) error.
95 * - Opening a file for read when already open for write, 45 * - Opening a file for read when already open for write,
96 * could result in a file measurement error. 46 * could result in a file measurement error.
97 * 47 *
98 */ 48 */
99void ima_counts_get(struct file *file) 49static void ima_rdwr_violation_check(struct file *file)
100{ 50{
101 struct dentry *dentry = file->f_path.dentry; 51 struct dentry *dentry = file->f_path.dentry;
102 struct inode *inode = dentry->d_inode; 52 struct inode *inode = dentry->d_inode;
@@ -104,32 +54,25 @@ void ima_counts_get(struct file *file)
104 int rc; 54 int rc;
105 bool send_tomtou = false, send_writers = false; 55 bool send_tomtou = false, send_writers = false;
106 56
107 if (!S_ISREG(inode->i_mode)) 57 if (!S_ISREG(inode->i_mode) || !ima_initialized)
108 return; 58 return;
109 59
110 spin_lock(&inode->i_lock); 60 mutex_lock(&inode->i_mutex); /* file metadata: permissions, xattr */
111
112 if (!ima_initialized)
113 goto out;
114 61
115 if (mode & FMODE_WRITE) { 62 if (mode & FMODE_WRITE) {
116 if (inode->i_readcount && IS_IMA(inode)) 63 if (atomic_read(&inode->i_readcount) && IS_IMA(inode))
117 send_tomtou = true; 64 send_tomtou = true;
118 goto out; 65 goto out;
119 } 66 }
120 67
121 rc = ima_must_measure(NULL, inode, MAY_READ, FILE_CHECK); 68 rc = ima_must_measure(inode, MAY_READ, FILE_CHECK);
122 if (rc < 0) 69 if (rc < 0)
123 goto out; 70 goto out;
124 71
125 if (atomic_read(&inode->i_writecount) > 0) 72 if (atomic_read(&inode->i_writecount) > 0)
126 send_writers = true; 73 send_writers = true;
127out: 74out:
128 /* remember the vfs deals with i_writecount */ 75 mutex_unlock(&inode->i_mutex);
129 if ((mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ)
130 inode->i_readcount++;
131
132 spin_unlock(&inode->i_lock);
133 76
134 if (send_tomtou) 77 if (send_tomtou)
135 ima_add_violation(inode, dentry->d_name.name, "invalid_pcr", 78 ima_add_violation(inode, dentry->d_name.name, "invalid_pcr",
@@ -139,71 +82,25 @@ out:
139 "open_writers"); 82 "open_writers");
140} 83}
141 84
142/*
143 * Decrement ima counts
144 */
145static void ima_dec_counts(struct inode *inode, struct file *file)
146{
147 mode_t mode = file->f_mode;
148
149 assert_spin_locked(&inode->i_lock);
150
151 if ((mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) {
152 if (unlikely(inode->i_readcount == 0)) {
153 if (!ima_limit_imbalance(file)) {
154 printk(KERN_INFO "%s: open/free imbalance (r:%u)\n",
155 __func__, inode->i_readcount);
156 dump_stack();
157 }
158 return;
159 }
160 inode->i_readcount--;
161 }
162}
163
164static void ima_check_last_writer(struct ima_iint_cache *iint, 85static void ima_check_last_writer(struct ima_iint_cache *iint,
165 struct inode *inode, 86 struct inode *inode,
166 struct file *file) 87 struct file *file)
167{ 88{
168 mode_t mode = file->f_mode; 89 mode_t mode = file->f_mode;
169 90
170 BUG_ON(!mutex_is_locked(&iint->mutex)); 91 mutex_lock(&iint->mutex);
171 assert_spin_locked(&inode->i_lock);
172
173 if (mode & FMODE_WRITE && 92 if (mode & FMODE_WRITE &&
174 atomic_read(&inode->i_writecount) == 1 && 93 atomic_read(&inode->i_writecount) == 1 &&
175 iint->version != inode->i_version) 94 iint->version != inode->i_version)
176 iint->flags &= ~IMA_MEASURED; 95 iint->flags &= ~IMA_MEASURED;
177}
178
179static void ima_file_free_iint(struct ima_iint_cache *iint, struct inode *inode,
180 struct file *file)
181{
182 mutex_lock(&iint->mutex);
183 spin_lock(&inode->i_lock);
184
185 ima_dec_counts(inode, file);
186 ima_check_last_writer(iint, inode, file);
187
188 spin_unlock(&inode->i_lock);
189 mutex_unlock(&iint->mutex); 96 mutex_unlock(&iint->mutex);
190} 97}
191 98
192static void ima_file_free_noiint(struct inode *inode, struct file *file)
193{
194 spin_lock(&inode->i_lock);
195
196 ima_dec_counts(inode, file);
197
198 spin_unlock(&inode->i_lock);
199}
200
201/** 99/**
202 * ima_file_free - called on __fput() 100 * ima_file_free - called on __fput()
203 * @file: pointer to file structure being freed 101 * @file: pointer to file structure being freed
204 * 102 *
205 * Flag files that changed, based on i_version; 103 * Flag files that changed, based on i_version
206 * and decrement the i_readcount.
207 */ 104 */
208void ima_file_free(struct file *file) 105void ima_file_free(struct file *file)
209{ 106{
@@ -214,12 +111,10 @@ void ima_file_free(struct file *file)
214 return; 111 return;
215 112
216 iint = ima_iint_find(inode); 113 iint = ima_iint_find(inode);
114 if (!iint)
115 return;
217 116
218 if (iint) 117 ima_check_last_writer(iint, inode, file);
219 ima_file_free_iint(iint, inode, file);
220 else
221 ima_file_free_noiint(inode, file);
222
223} 118}
224 119
225static int process_measurement(struct file *file, const unsigned char *filename, 120static int process_measurement(struct file *file, const unsigned char *filename,
@@ -232,7 +127,7 @@ static int process_measurement(struct file *file, const unsigned char *filename,
232 if (!ima_initialized || !S_ISREG(inode->i_mode)) 127 if (!ima_initialized || !S_ISREG(inode->i_mode))
233 return 0; 128 return 0;
234 129
235 rc = ima_must_measure(NULL, inode, mask, function); 130 rc = ima_must_measure(inode, mask, function);
236 if (rc != 0) 131 if (rc != 0)
237 return rc; 132 return rc;
238retry: 133retry:
@@ -246,7 +141,7 @@ retry:
246 141
247 mutex_lock(&iint->mutex); 142 mutex_lock(&iint->mutex);
248 143
249 rc = ima_must_measure(iint, inode, mask, function); 144 rc = iint->flags & IMA_MEASURED ? 1 : 0;
250 if (rc != 0) 145 if (rc != 0)
251 goto out; 146 goto out;
252 147
@@ -317,6 +212,7 @@ int ima_file_check(struct file *file, int mask)
317{ 212{
318 int rc; 213 int rc;
319 214
215 ima_rdwr_violation_check(file);
320 rc = process_measurement(file, file->f_dentry->d_name.name, 216 rc = process_measurement(file, file->f_dentry->d_name.name,
321 mask & (MAY_READ | MAY_WRITE | MAY_EXEC), 217 mask & (MAY_READ | MAY_WRITE | MAY_EXEC),
322 FILE_CHECK); 218 FILE_CHECK);
diff --git a/security/keys/compat.c b/security/keys/compat.c
index 07a5f35e3970..338b510e9027 100644
--- a/security/keys/compat.c
+++ b/security/keys/compat.c
@@ -12,9 +12,52 @@
12#include <linux/syscalls.h> 12#include <linux/syscalls.h>
13#include <linux/keyctl.h> 13#include <linux/keyctl.h>
14#include <linux/compat.h> 14#include <linux/compat.h>
15#include <linux/slab.h>
15#include "internal.h" 16#include "internal.h"
16 17
17/* 18/*
19 * Instantiate a key with the specified compatibility multipart payload and
20 * link the key into the destination keyring if one is given.
21 *
22 * The caller must have the appropriate instantiation permit set for this to
23 * work (see keyctl_assume_authority). No other permissions are required.
24 *
25 * If successful, 0 will be returned.
26 */
27long compat_keyctl_instantiate_key_iov(
28 key_serial_t id,
29 const struct compat_iovec __user *_payload_iov,
30 unsigned ioc,
31 key_serial_t ringid)
32{
33 struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
34 long ret;
35
36 if (_payload_iov == 0 || ioc == 0)
37 goto no_payload;
38
39 ret = compat_rw_copy_check_uvector(WRITE, _payload_iov, ioc,
40 ARRAY_SIZE(iovstack),
41 iovstack, &iov);
42 if (ret < 0)
43 return ret;
44 if (ret == 0)
45 goto no_payload_free;
46
47 ret = keyctl_instantiate_key_common(id, iov, ioc, ret, ringid);
48
49 if (iov != iovstack)
50 kfree(iov);
51 return ret;
52
53no_payload_free:
54 if (iov != iovstack)
55 kfree(iov);
56no_payload:
57 return keyctl_instantiate_key_common(id, NULL, 0, 0, ringid);
58}
59
60/*
18 * The key control system call, 32-bit compatibility version for 64-bit archs 61 * The key control system call, 32-bit compatibility version for 64-bit archs
19 * 62 *
20 * This should only be called if the 64-bit arch uses weird pointers in 32-bit 63 * This should only be called if the 64-bit arch uses weird pointers in 32-bit
@@ -85,6 +128,13 @@ asmlinkage long compat_sys_keyctl(u32 option,
85 case KEYCTL_SESSION_TO_PARENT: 128 case KEYCTL_SESSION_TO_PARENT:
86 return keyctl_session_to_parent(); 129 return keyctl_session_to_parent();
87 130
131 case KEYCTL_REJECT:
132 return keyctl_reject_key(arg2, arg3, arg4, arg5);
133
134 case KEYCTL_INSTANTIATE_IOV:
135 return compat_keyctl_instantiate_key_iov(
136 arg2, compat_ptr(arg3), arg4, arg5);
137
88 default: 138 default:
89 return -EOPNOTSUPP; 139 return -EOPNOTSUPP;
90 } 140 }
diff --git a/security/keys/encrypted.c b/security/keys/encrypted.c
index 9e7e4ce3fae8..69907a58a683 100644
--- a/security/keys/encrypted.c
+++ b/security/keys/encrypted.c
@@ -765,8 +765,7 @@ static long encrypted_read(const struct key *key, char __user *buffer,
765 size_t asciiblob_len; 765 size_t asciiblob_len;
766 int ret; 766 int ret;
767 767
768 epayload = rcu_dereference_protected(key->payload.data, 768 epayload = rcu_dereference_key(key);
769 rwsem_is_locked(&((struct key *)key)->sem));
770 769
771 /* returns the hex encoded iv, encrypted-data, and hmac as ascii */ 770 /* returns the hex encoded iv, encrypted-data, and hmac as ascii */
772 asciiblob_len = epayload->datablob_len + ivsize + 1 771 asciiblob_len = epayload->datablob_len + ivsize + 1
diff --git a/security/keys/internal.h b/security/keys/internal.h
index a52aa7c88b41..07a025f81902 100644
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -214,6 +214,14 @@ extern long keyctl_assume_authority(key_serial_t);
214extern long keyctl_get_security(key_serial_t keyid, char __user *buffer, 214extern long keyctl_get_security(key_serial_t keyid, char __user *buffer,
215 size_t buflen); 215 size_t buflen);
216extern long keyctl_session_to_parent(void); 216extern long keyctl_session_to_parent(void);
217extern long keyctl_reject_key(key_serial_t, unsigned, unsigned, key_serial_t);
218extern long keyctl_instantiate_key_iov(key_serial_t,
219 const struct iovec __user *,
220 unsigned, key_serial_t);
221
222extern long keyctl_instantiate_key_common(key_serial_t,
223 const struct iovec __user *,
224 unsigned, size_t, key_serial_t);
217 225
218/* 226/*
219 * Debugging key validation 227 * Debugging key validation
diff --git a/security/keys/key.c b/security/keys/key.c
index 1c2d43dc5107..f7f9d93f08d9 100644
--- a/security/keys/key.c
+++ b/security/keys/key.c
@@ -249,6 +249,14 @@ struct key *key_alloc(struct key_type *type, const char *desc,
249 if (!desc || !*desc) 249 if (!desc || !*desc)
250 goto error; 250 goto error;
251 251
252 if (type->vet_description) {
253 ret = type->vet_description(desc);
254 if (ret < 0) {
255 key = ERR_PTR(ret);
256 goto error;
257 }
258 }
259
252 desclen = strlen(desc) + 1; 260 desclen = strlen(desc) + 1;
253 quotalen = desclen + type->def_datalen; 261 quotalen = desclen + type->def_datalen;
254 262
@@ -503,26 +511,29 @@ int key_instantiate_and_link(struct key *key,
503EXPORT_SYMBOL(key_instantiate_and_link); 511EXPORT_SYMBOL(key_instantiate_and_link);
504 512
505/** 513/**
506 * key_negate_and_link - Negatively instantiate a key and link it into the keyring. 514 * key_reject_and_link - Negatively instantiate a key and link it into the keyring.
507 * @key: The key to instantiate. 515 * @key: The key to instantiate.
508 * @timeout: The timeout on the negative key. 516 * @timeout: The timeout on the negative key.
517 * @error: The error to return when the key is hit.
509 * @keyring: Keyring to create a link in on success (or NULL). 518 * @keyring: Keyring to create a link in on success (or NULL).
510 * @authkey: The authorisation token permitting instantiation. 519 * @authkey: The authorisation token permitting instantiation.
511 * 520 *
512 * Negatively instantiate a key that's in the uninstantiated state and, if 521 * Negatively instantiate a key that's in the uninstantiated state and, if
513 * successful, set its timeout and link it in to the destination keyring if one 522 * successful, set its timeout and stored error and link it in to the
514 * is supplied. The key and any links to the key will be automatically garbage 523 * destination keyring if one is supplied. The key and any links to the key
515 * collected after the timeout expires. 524 * will be automatically garbage collected after the timeout expires.
516 * 525 *
517 * Negative keys are used to rate limit repeated request_key() calls by causing 526 * Negative keys are used to rate limit repeated request_key() calls by causing
518 * them to return -ENOKEY until the negative key expires. 527 * them to return the stored error code (typically ENOKEY) until the negative
528 * key expires.
519 * 529 *
520 * If successful, 0 is returned, the authorisation token is revoked and anyone 530 * If successful, 0 is returned, the authorisation token is revoked and anyone
521 * waiting for the key is woken up. If the key was already instantiated, 531 * waiting for the key is woken up. If the key was already instantiated,
522 * -EBUSY will be returned. 532 * -EBUSY will be returned.
523 */ 533 */
524int key_negate_and_link(struct key *key, 534int key_reject_and_link(struct key *key,
525 unsigned timeout, 535 unsigned timeout,
536 unsigned error,
526 struct key *keyring, 537 struct key *keyring,
527 struct key *authkey) 538 struct key *authkey)
528{ 539{
@@ -548,6 +559,7 @@ int key_negate_and_link(struct key *key,
548 atomic_inc(&key->user->nikeys); 559 atomic_inc(&key->user->nikeys);
549 set_bit(KEY_FLAG_NEGATIVE, &key->flags); 560 set_bit(KEY_FLAG_NEGATIVE, &key->flags);
550 set_bit(KEY_FLAG_INSTANTIATED, &key->flags); 561 set_bit(KEY_FLAG_INSTANTIATED, &key->flags);
562 key->type_data.reject_error = -error;
551 now = current_kernel_time(); 563 now = current_kernel_time();
552 key->expiry = now.tv_sec + timeout; 564 key->expiry = now.tv_sec + timeout;
553 key_schedule_gc(key->expiry + key_gc_delay); 565 key_schedule_gc(key->expiry + key_gc_delay);
@@ -577,8 +589,7 @@ int key_negate_and_link(struct key *key,
577 589
578 return ret == 0 ? link_ret : ret; 590 return ret == 0 ? link_ret : ret;
579} 591}
580 592EXPORT_SYMBOL(key_reject_and_link);
581EXPORT_SYMBOL(key_negate_and_link);
582 593
583/* 594/*
584 * Garbage collect keys in process context so that we don't have to disable 595 * Garbage collect keys in process context so that we don't have to disable
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index 31a0fd8189f1..427fddcaeb19 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -913,6 +913,21 @@ static int keyctl_change_reqkey_auth(struct key *key)
913} 913}
914 914
915/* 915/*
916 * Copy the iovec data from userspace
917 */
918static long copy_from_user_iovec(void *buffer, const struct iovec *iov,
919 unsigned ioc)
920{
921 for (; ioc > 0; ioc--) {
922 if (copy_from_user(buffer, iov->iov_base, iov->iov_len) != 0)
923 return -EFAULT;
924 buffer += iov->iov_len;
925 iov++;
926 }
927 return 0;
928}
929
930/*
916 * Instantiate a key with the specified payload and link the key into the 931 * Instantiate a key with the specified payload and link the key into the
917 * destination keyring if one is given. 932 * destination keyring if one is given.
918 * 933 *
@@ -921,10 +936,11 @@ static int keyctl_change_reqkey_auth(struct key *key)
921 * 936 *
922 * If successful, 0 will be returned. 937 * If successful, 0 will be returned.
923 */ 938 */
924long keyctl_instantiate_key(key_serial_t id, 939long keyctl_instantiate_key_common(key_serial_t id,
925 const void __user *_payload, 940 const struct iovec *payload_iov,
926 size_t plen, 941 unsigned ioc,
927 key_serial_t ringid) 942 size_t plen,
943 key_serial_t ringid)
928{ 944{
929 const struct cred *cred = current_cred(); 945 const struct cred *cred = current_cred();
930 struct request_key_auth *rka; 946 struct request_key_auth *rka;
@@ -953,7 +969,7 @@ long keyctl_instantiate_key(key_serial_t id,
953 /* pull the payload in if one was supplied */ 969 /* pull the payload in if one was supplied */
954 payload = NULL; 970 payload = NULL;
955 971
956 if (_payload) { 972 if (payload_iov) {
957 ret = -ENOMEM; 973 ret = -ENOMEM;
958 payload = kmalloc(plen, GFP_KERNEL); 974 payload = kmalloc(plen, GFP_KERNEL);
959 if (!payload) { 975 if (!payload) {
@@ -965,8 +981,8 @@ long keyctl_instantiate_key(key_serial_t id,
965 goto error; 981 goto error;
966 } 982 }
967 983
968 ret = -EFAULT; 984 ret = copy_from_user_iovec(payload, payload_iov, ioc);
969 if (copy_from_user(payload, _payload, plen) != 0) 985 if (ret < 0)
970 goto error2; 986 goto error2;
971 } 987 }
972 988
@@ -997,6 +1013,72 @@ error:
997} 1013}
998 1014
999/* 1015/*
1016 * Instantiate a key with the specified payload and link the key into the
1017 * destination keyring if one is given.
1018 *
1019 * The caller must have the appropriate instantiation permit set for this to
1020 * work (see keyctl_assume_authority). No other permissions are required.
1021 *
1022 * If successful, 0 will be returned.
1023 */
1024long keyctl_instantiate_key(key_serial_t id,
1025 const void __user *_payload,
1026 size_t plen,
1027 key_serial_t ringid)
1028{
1029 if (_payload && plen) {
1030 struct iovec iov[1] = {
1031 [0].iov_base = (void __user *)_payload,
1032 [0].iov_len = plen
1033 };
1034
1035 return keyctl_instantiate_key_common(id, iov, 1, plen, ringid);
1036 }
1037
1038 return keyctl_instantiate_key_common(id, NULL, 0, 0, ringid);
1039}
1040
1041/*
1042 * Instantiate a key with the specified multipart payload and link the key into
1043 * the destination keyring if one is given.
1044 *
1045 * The caller must have the appropriate instantiation permit set for this to
1046 * work (see keyctl_assume_authority). No other permissions are required.
1047 *
1048 * If successful, 0 will be returned.
1049 */
1050long keyctl_instantiate_key_iov(key_serial_t id,
1051 const struct iovec __user *_payload_iov,
1052 unsigned ioc,
1053 key_serial_t ringid)
1054{
1055 struct iovec iovstack[UIO_FASTIOV], *iov = iovstack;
1056 long ret;
1057
1058 if (_payload_iov == 0 || ioc == 0)
1059 goto no_payload;
1060
1061 ret = rw_copy_check_uvector(WRITE, _payload_iov, ioc,
1062 ARRAY_SIZE(iovstack), iovstack, &iov);
1063 if (ret < 0)
1064 return ret;
1065 if (ret == 0)
1066 goto no_payload_free;
1067
1068 ret = keyctl_instantiate_key_common(id, iov, ioc, ret, ringid);
1069
1070 if (iov != iovstack)
1071 kfree(iov);
1072 return ret;
1073
1074no_payload_free:
1075 if (iov != iovstack)
1076 kfree(iov);
1077no_payload:
1078 return keyctl_instantiate_key_common(id, NULL, 0, 0, ringid);
1079}
1080
1081/*
1000 * Negatively instantiate the key with the given timeout (in seconds) and link 1082 * Negatively instantiate the key with the given timeout (in seconds) and link
1001 * the key into the destination keyring if one is given. 1083 * the key into the destination keyring if one is given.
1002 * 1084 *
@@ -1013,12 +1095,42 @@ error:
1013 */ 1095 */
1014long keyctl_negate_key(key_serial_t id, unsigned timeout, key_serial_t ringid) 1096long keyctl_negate_key(key_serial_t id, unsigned timeout, key_serial_t ringid)
1015{ 1097{
1098 return keyctl_reject_key(id, timeout, ENOKEY, ringid);
1099}
1100
1101/*
1102 * Negatively instantiate the key with the given timeout (in seconds) and error
1103 * code and link the key into the destination keyring if one is given.
1104 *
1105 * The caller must have the appropriate instantiation permit set for this to
1106 * work (see keyctl_assume_authority). No other permissions are required.
1107 *
1108 * The key and any links to the key will be automatically garbage collected
1109 * after the timeout expires.
1110 *
1111 * Negative keys are used to rate limit repeated request_key() calls by causing
1112 * them to return the specified error code until the negative key expires.
1113 *
1114 * If successful, 0 will be returned.
1115 */
1116long keyctl_reject_key(key_serial_t id, unsigned timeout, unsigned error,
1117 key_serial_t ringid)
1118{
1016 const struct cred *cred = current_cred(); 1119 const struct cred *cred = current_cred();
1017 struct request_key_auth *rka; 1120 struct request_key_auth *rka;
1018 struct key *instkey, *dest_keyring; 1121 struct key *instkey, *dest_keyring;
1019 long ret; 1122 long ret;
1020 1123
1021 kenter("%d,%u,%d", id, timeout, ringid); 1124 kenter("%d,%u,%u,%d", id, timeout, error, ringid);
1125
1126 /* must be a valid error code and mustn't be a kernel special */
1127 if (error <= 0 ||
1128 error >= MAX_ERRNO ||
1129 error == ERESTARTSYS ||
1130 error == ERESTARTNOINTR ||
1131 error == ERESTARTNOHAND ||
1132 error == ERESTART_RESTARTBLOCK)
1133 return -EINVAL;
1022 1134
1023 /* the appropriate instantiation authorisation key must have been 1135 /* the appropriate instantiation authorisation key must have been
1024 * assumed before calling this */ 1136 * assumed before calling this */
@@ -1038,7 +1150,7 @@ long keyctl_negate_key(key_serial_t id, unsigned timeout, key_serial_t ringid)
1038 goto error; 1150 goto error;
1039 1151
1040 /* instantiate the key and link it into a keyring */ 1152 /* instantiate the key and link it into a keyring */
1041 ret = key_negate_and_link(rka->target_key, timeout, 1153 ret = key_reject_and_link(rka->target_key, timeout, error,
1042 dest_keyring, instkey); 1154 dest_keyring, instkey);
1043 1155
1044 key_put(dest_keyring); 1156 key_put(dest_keyring);
@@ -1492,6 +1604,19 @@ SYSCALL_DEFINE5(keyctl, int, option, unsigned long, arg2, unsigned long, arg3,
1492 case KEYCTL_SESSION_TO_PARENT: 1604 case KEYCTL_SESSION_TO_PARENT:
1493 return keyctl_session_to_parent(); 1605 return keyctl_session_to_parent();
1494 1606
1607 case KEYCTL_REJECT:
1608 return keyctl_reject_key((key_serial_t) arg2,
1609 (unsigned) arg3,
1610 (unsigned) arg4,
1611 (key_serial_t) arg5);
1612
1613 case KEYCTL_INSTANTIATE_IOV:
1614 return keyctl_instantiate_key_iov(
1615 (key_serial_t) arg2,
1616 (const struct iovec __user *) arg3,
1617 (unsigned) arg4,
1618 (key_serial_t) arg5);
1619
1495 default: 1620 default:
1496 return -EOPNOTSUPP; 1621 return -EOPNOTSUPP;
1497 } 1622 }
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index 5620f084dede..cdd2f3f88c88 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -352,7 +352,7 @@ key_ref_t keyring_search_aux(key_ref_t keyring_ref,
352 goto error_2; 352 goto error_2;
353 if (key->expiry && now.tv_sec >= key->expiry) 353 if (key->expiry && now.tv_sec >= key->expiry)
354 goto error_2; 354 goto error_2;
355 key_ref = ERR_PTR(-ENOKEY); 355 key_ref = ERR_PTR(key->type_data.reject_error);
356 if (kflags & (1 << KEY_FLAG_NEGATIVE)) 356 if (kflags & (1 << KEY_FLAG_NEGATIVE))
357 goto error_2; 357 goto error_2;
358 goto found; 358 goto found;
@@ -401,7 +401,7 @@ descend:
401 401
402 /* we set a different error code if we pass a negative key */ 402 /* we set a different error code if we pass a negative key */
403 if (kflags & (1 << KEY_FLAG_NEGATIVE)) { 403 if (kflags & (1 << KEY_FLAG_NEGATIVE)) {
404 err = -ENOKEY; 404 err = key->type_data.reject_error;
405 continue; 405 continue;
406 } 406 }
407 407
diff --git a/security/keys/request_key.c b/security/keys/request_key.c
index a3dc0d460def..df3c0417ee40 100644
--- a/security/keys/request_key.c
+++ b/security/keys/request_key.c
@@ -585,7 +585,7 @@ int wait_for_key_construction(struct key *key, bool intr)
585 if (ret < 0) 585 if (ret < 0)
586 return ret; 586 return ret;
587 if (test_bit(KEY_FLAG_NEGATIVE, &key->flags)) 587 if (test_bit(KEY_FLAG_NEGATIVE, &key->flags))
588 return -ENOKEY; 588 return key->type_data.reject_error;
589 return key_validate(key); 589 return key_validate(key);
590} 590}
591EXPORT_SYMBOL(wait_for_key_construction); 591EXPORT_SYMBOL(wait_for_key_construction);
diff --git a/security/keys/trusted.c b/security/keys/trusted.c
index 83fc92e297cd..c99b9368368c 100644
--- a/security/keys/trusted.c
+++ b/security/keys/trusted.c
@@ -1076,8 +1076,7 @@ static long trusted_read(const struct key *key, char __user *buffer,
1076 char *bufp; 1076 char *bufp;
1077 int i; 1077 int i;
1078 1078
1079 p = rcu_dereference_protected(key->payload.data, 1079 p = rcu_dereference_key(key);
1080 rwsem_is_locked(&((struct key *)key)->sem));
1081 if (!p) 1080 if (!p)
1082 return -EINVAL; 1081 return -EINVAL;
1083 if (!buffer || buflen <= 0) 1082 if (!buffer || buflen <= 0)
diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c
index 02807fb16340..c6ca8662a468 100644
--- a/security/keys/user_defined.c
+++ b/security/keys/user_defined.c
@@ -184,8 +184,7 @@ long user_read(const struct key *key, char __user *buffer, size_t buflen)
184 struct user_key_payload *upayload; 184 struct user_key_payload *upayload;
185 long ret; 185 long ret;
186 186
187 upayload = rcu_dereference_protected( 187 upayload = rcu_dereference_key(key);
188 key->payload.data, rwsem_is_locked(&((struct key *)key)->sem));
189 ret = upayload->datalen; 188 ret = upayload->datalen;
190 189
191 /* we can return the data as is */ 190 /* we can return the data as is */
diff --git a/security/security.c b/security/security.c
index bb33ecadcf95..bab9b23c3ff4 100644
--- a/security/security.c
+++ b/security/security.c
@@ -181,11 +181,6 @@ int security_real_capable_noaudit(struct task_struct *tsk, int cap)
181 return ret; 181 return ret;
182} 182}
183 183
184int security_sysctl(struct ctl_table *table, int op)
185{
186 return security_ops->sysctl(table, op);
187}
188
189int security_quotactl(int cmds, int type, int id, struct super_block *sb) 184int security_quotactl(int cmds, int type, int id, struct super_block *sb)
190{ 185{
191 return security_ops->quotactl(cmds, type, id, sb); 186 return security_ops->quotactl(cmds, type, id, sb);
@@ -271,6 +266,11 @@ int security_sb_copy_data(char *orig, char *copy)
271} 266}
272EXPORT_SYMBOL(security_sb_copy_data); 267EXPORT_SYMBOL(security_sb_copy_data);
273 268
269int security_sb_remount(struct super_block *sb, void *data)
270{
271 return security_ops->sb_remount(sb, data);
272}
273
274int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 274int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
275{ 275{
276 return security_ops->sb_kern_mount(sb, flags, data); 276 return security_ops->sb_kern_mount(sb, flags, data);
@@ -335,11 +335,13 @@ void security_inode_free(struct inode *inode)
335} 335}
336 336
337int security_inode_init_security(struct inode *inode, struct inode *dir, 337int security_inode_init_security(struct inode *inode, struct inode *dir,
338 char **name, void **value, size_t *len) 338 const struct qstr *qstr, char **name,
339 void **value, size_t *len)
339{ 340{
340 if (unlikely(IS_PRIVATE(inode))) 341 if (unlikely(IS_PRIVATE(inode)))
341 return -EOPNOTSUPP; 342 return -EOPNOTSUPP;
342 return security_ops->inode_init_security(inode, dir, name, value, len); 343 return security_ops->inode_init_security(inode, dir, qstr, name, value,
344 len);
343} 345}
344EXPORT_SYMBOL(security_inode_init_security); 346EXPORT_SYMBOL(security_inode_init_security);
345 347
@@ -359,6 +361,7 @@ int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode)
359 return 0; 361 return 0;
360 return security_ops->path_mkdir(dir, dentry, mode); 362 return security_ops->path_mkdir(dir, dentry, mode);
361} 363}
364EXPORT_SYMBOL(security_path_mkdir);
362 365
363int security_path_rmdir(struct path *dir, struct dentry *dentry) 366int security_path_rmdir(struct path *dir, struct dentry *dentry)
364{ 367{
@@ -373,6 +376,7 @@ int security_path_unlink(struct path *dir, struct dentry *dentry)
373 return 0; 376 return 0;
374 return security_ops->path_unlink(dir, dentry); 377 return security_ops->path_unlink(dir, dentry);
375} 378}
379EXPORT_SYMBOL(security_path_unlink);
376 380
377int security_path_symlink(struct path *dir, struct dentry *dentry, 381int security_path_symlink(struct path *dir, struct dentry *dentry,
378 const char *old_name) 382 const char *old_name)
@@ -399,6 +403,7 @@ int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
399 return security_ops->path_rename(old_dir, old_dentry, new_dir, 403 return security_ops->path_rename(old_dir, old_dentry, new_dir,
400 new_dentry); 404 new_dentry);
401} 405}
406EXPORT_SYMBOL(security_path_rename);
402 407
403int security_path_truncate(struct path *path) 408int security_path_truncate(struct path *path)
404{ 409{
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index c8d699270687..d52a92507412 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -24,9 +24,11 @@
24 */ 24 */
25 25
26#include <linux/init.h> 26#include <linux/init.h>
27#include <linux/kd.h>
27#include <linux/kernel.h> 28#include <linux/kernel.h>
28#include <linux/tracehook.h> 29#include <linux/tracehook.h>
29#include <linux/errno.h> 30#include <linux/errno.h>
31#include <linux/ext2_fs.h>
30#include <linux/sched.h> 32#include <linux/sched.h>
31#include <linux/security.h> 33#include <linux/security.h>
32#include <linux/xattr.h> 34#include <linux/xattr.h>
@@ -36,14 +38,15 @@
36#include <linux/mman.h> 38#include <linux/mman.h>
37#include <linux/slab.h> 39#include <linux/slab.h>
38#include <linux/pagemap.h> 40#include <linux/pagemap.h>
41#include <linux/proc_fs.h>
39#include <linux/swap.h> 42#include <linux/swap.h>
40#include <linux/spinlock.h> 43#include <linux/spinlock.h>
41#include <linux/syscalls.h> 44#include <linux/syscalls.h>
45#include <linux/dcache.h>
42#include <linux/file.h> 46#include <linux/file.h>
43#include <linux/fdtable.h> 47#include <linux/fdtable.h>
44#include <linux/namei.h> 48#include <linux/namei.h>
45#include <linux/mount.h> 49#include <linux/mount.h>
46#include <linux/proc_fs.h>
47#include <linux/netfilter_ipv4.h> 50#include <linux/netfilter_ipv4.h>
48#include <linux/netfilter_ipv6.h> 51#include <linux/netfilter_ipv6.h>
49#include <linux/tty.h> 52#include <linux/tty.h>
@@ -70,7 +73,6 @@
70#include <net/ipv6.h> 73#include <net/ipv6.h>
71#include <linux/hugetlb.h> 74#include <linux/hugetlb.h>
72#include <linux/personality.h> 75#include <linux/personality.h>
73#include <linux/sysctl.h>
74#include <linux/audit.h> 76#include <linux/audit.h>
75#include <linux/string.h> 77#include <linux/string.h>
76#include <linux/selinux.h> 78#include <linux/selinux.h>
@@ -1120,39 +1122,35 @@ static inline u16 socket_type_to_security_class(int family, int type, int protoc
1120} 1122}
1121 1123
1122#ifdef CONFIG_PROC_FS 1124#ifdef CONFIG_PROC_FS
1123static int selinux_proc_get_sid(struct proc_dir_entry *de, 1125static int selinux_proc_get_sid(struct dentry *dentry,
1124 u16 tclass, 1126 u16 tclass,
1125 u32 *sid) 1127 u32 *sid)
1126{ 1128{
1127 int buflen, rc; 1129 int rc;
1128 char *buffer, *path, *end; 1130 char *buffer, *path;
1129 1131
1130 buffer = (char *)__get_free_page(GFP_KERNEL); 1132 buffer = (char *)__get_free_page(GFP_KERNEL);
1131 if (!buffer) 1133 if (!buffer)
1132 return -ENOMEM; 1134 return -ENOMEM;
1133 1135
1134 buflen = PAGE_SIZE; 1136 path = dentry_path_raw(dentry, buffer, PAGE_SIZE);
1135 end = buffer+buflen; 1137 if (IS_ERR(path))
1136 *--end = '\0'; 1138 rc = PTR_ERR(path);
1137 buflen--; 1139 else {
1138 path = end-1; 1140 /* each process gets a /proc/PID/ entry. Strip off the
1139 *path = '/'; 1141 * PID part to get a valid selinux labeling.
1140 while (de && de != de->parent) { 1142 * e.g. /proc/1/net/rpc/nfs -> /net/rpc/nfs */
1141 buflen -= de->namelen + 1; 1143 while (path[1] >= '0' && path[1] <= '9') {
1142 if (buflen < 0) 1144 path[1] = '/';
1143 break; 1145 path++;
1144 end -= de->namelen; 1146 }
1145 memcpy(end, de->name, de->namelen); 1147 rc = security_genfs_sid("proc", path, tclass, sid);
1146 *--end = '/';
1147 path = end;
1148 de = de->parent;
1149 } 1148 }
1150 rc = security_genfs_sid("proc", path, tclass, sid);
1151 free_page((unsigned long)buffer); 1149 free_page((unsigned long)buffer);
1152 return rc; 1150 return rc;
1153} 1151}
1154#else 1152#else
1155static int selinux_proc_get_sid(struct proc_dir_entry *de, 1153static int selinux_proc_get_sid(struct dentry *dentry,
1156 u16 tclass, 1154 u16 tclass,
1157 u32 *sid) 1155 u32 *sid)
1158{ 1156{
@@ -1300,10 +1298,8 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent
1300 1298
1301 /* Try to obtain a transition SID. */ 1299 /* Try to obtain a transition SID. */
1302 isec->sclass = inode_mode_to_security_class(inode->i_mode); 1300 isec->sclass = inode_mode_to_security_class(inode->i_mode);
1303 rc = security_transition_sid(isec->task_sid, 1301 rc = security_transition_sid(isec->task_sid, sbsec->sid,
1304 sbsec->sid, 1302 isec->sclass, NULL, &sid);
1305 isec->sclass,
1306 &sid);
1307 if (rc) 1303 if (rc)
1308 goto out_unlock; 1304 goto out_unlock;
1309 isec->sid = sid; 1305 isec->sid = sid;
@@ -1316,10 +1312,9 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent
1316 isec->sid = sbsec->sid; 1312 isec->sid = sbsec->sid;
1317 1313
1318 if ((sbsec->flags & SE_SBPROC) && !S_ISLNK(inode->i_mode)) { 1314 if ((sbsec->flags & SE_SBPROC) && !S_ISLNK(inode->i_mode)) {
1319 struct proc_inode *proci = PROC_I(inode); 1315 if (opt_dentry) {
1320 if (proci->pde) {
1321 isec->sclass = inode_mode_to_security_class(inode->i_mode); 1316 isec->sclass = inode_mode_to_security_class(inode->i_mode);
1322 rc = selinux_proc_get_sid(proci->pde, 1317 rc = selinux_proc_get_sid(opt_dentry,
1323 isec->sclass, 1318 isec->sclass,
1324 &sid); 1319 &sid);
1325 if (rc) 1320 if (rc)
@@ -1578,7 +1573,7 @@ static int may_create(struct inode *dir,
1578 return rc; 1573 return rc;
1579 1574
1580 if (!newsid || !(sbsec->flags & SE_SBLABELSUPP)) { 1575 if (!newsid || !(sbsec->flags & SE_SBLABELSUPP)) {
1581 rc = security_transition_sid(sid, dsec->sid, tclass, &newsid); 1576 rc = security_transition_sid(sid, dsec->sid, tclass, NULL, &newsid);
1582 if (rc) 1577 if (rc)
1583 return rc; 1578 return rc;
1584 } 1579 }
@@ -1862,82 +1857,6 @@ static int selinux_capable(struct task_struct *tsk, const struct cred *cred,
1862 return task_has_capability(tsk, cred, cap, audit); 1857 return task_has_capability(tsk, cred, cap, audit);
1863} 1858}
1864 1859
1865static int selinux_sysctl_get_sid(ctl_table *table, u16 tclass, u32 *sid)
1866{
1867 int buflen, rc;
1868 char *buffer, *path, *end;
1869
1870 rc = -ENOMEM;
1871 buffer = (char *)__get_free_page(GFP_KERNEL);
1872 if (!buffer)
1873 goto out;
1874
1875 buflen = PAGE_SIZE;
1876 end = buffer+buflen;
1877 *--end = '\0';
1878 buflen--;
1879 path = end-1;
1880 *path = '/';
1881 while (table) {
1882 const char *name = table->procname;
1883 size_t namelen = strlen(name);
1884 buflen -= namelen + 1;
1885 if (buflen < 0)
1886 goto out_free;
1887 end -= namelen;
1888 memcpy(end, name, namelen);
1889 *--end = '/';
1890 path = end;
1891 table = table->parent;
1892 }
1893 buflen -= 4;
1894 if (buflen < 0)
1895 goto out_free;
1896 end -= 4;
1897 memcpy(end, "/sys", 4);
1898 path = end;
1899 rc = security_genfs_sid("proc", path, tclass, sid);
1900out_free:
1901 free_page((unsigned long)buffer);
1902out:
1903 return rc;
1904}
1905
1906static int selinux_sysctl(ctl_table *table, int op)
1907{
1908 int error = 0;
1909 u32 av;
1910 u32 tsid, sid;
1911 int rc;
1912
1913 sid = current_sid();
1914
1915 rc = selinux_sysctl_get_sid(table, (op == 0001) ?
1916 SECCLASS_DIR : SECCLASS_FILE, &tsid);
1917 if (rc) {
1918 /* Default to the well-defined sysctl SID. */
1919 tsid = SECINITSID_SYSCTL;
1920 }
1921
1922 /* The op values are "defined" in sysctl.c, thereby creating
1923 * a bad coupling between this module and sysctl.c */
1924 if (op == 001) {
1925 error = avc_has_perm(sid, tsid,
1926 SECCLASS_DIR, DIR__SEARCH, NULL);
1927 } else {
1928 av = 0;
1929 if (op & 004)
1930 av |= FILE__READ;
1931 if (op & 002)
1932 av |= FILE__WRITE;
1933 if (av)
1934 error = avc_has_perm(sid, tsid,
1935 SECCLASS_FILE, av, NULL);
1936 }
1937
1938 return error;
1939}
1940
1941static int selinux_quotactl(int cmds, int type, int id, struct super_block *sb) 1860static int selinux_quotactl(int cmds, int type, int id, struct super_block *sb)
1942{ 1861{
1943 const struct cred *cred = current_cred(); 1862 const struct cred *cred = current_cred();
@@ -2060,7 +1979,8 @@ static int selinux_bprm_set_creds(struct linux_binprm *bprm)
2060 } else { 1979 } else {
2061 /* Check for a default transition on this program. */ 1980 /* Check for a default transition on this program. */
2062 rc = security_transition_sid(old_tsec->sid, isec->sid, 1981 rc = security_transition_sid(old_tsec->sid, isec->sid,
2063 SECCLASS_PROCESS, &new_tsec->sid); 1982 SECCLASS_PROCESS, NULL,
1983 &new_tsec->sid);
2064 if (rc) 1984 if (rc)
2065 return rc; 1985 return rc;
2066 } 1986 }
@@ -2443,6 +2363,91 @@ out:
2443 return rc; 2363 return rc;
2444} 2364}
2445 2365
2366static int selinux_sb_remount(struct super_block *sb, void *data)
2367{
2368 int rc, i, *flags;
2369 struct security_mnt_opts opts;
2370 char *secdata, **mount_options;
2371 struct superblock_security_struct *sbsec = sb->s_security;
2372
2373 if (!(sbsec->flags & SE_SBINITIALIZED))
2374 return 0;
2375
2376 if (!data)
2377 return 0;
2378
2379 if (sb->s_type->fs_flags & FS_BINARY_MOUNTDATA)
2380 return 0;
2381
2382 security_init_mnt_opts(&opts);
2383 secdata = alloc_secdata();
2384 if (!secdata)
2385 return -ENOMEM;
2386 rc = selinux_sb_copy_data(data, secdata);
2387 if (rc)
2388 goto out_free_secdata;
2389
2390 rc = selinux_parse_opts_str(secdata, &opts);
2391 if (rc)
2392 goto out_free_secdata;
2393
2394 mount_options = opts.mnt_opts;
2395 flags = opts.mnt_opts_flags;
2396
2397 for (i = 0; i < opts.num_mnt_opts; i++) {
2398 u32 sid;
2399 size_t len;
2400
2401 if (flags[i] == SE_SBLABELSUPP)
2402 continue;
2403 len = strlen(mount_options[i]);
2404 rc = security_context_to_sid(mount_options[i], len, &sid);
2405 if (rc) {
2406 printk(KERN_WARNING "SELinux: security_context_to_sid"
2407 "(%s) failed for (dev %s, type %s) errno=%d\n",
2408 mount_options[i], sb->s_id, sb->s_type->name, rc);
2409 goto out_free_opts;
2410 }
2411 rc = -EINVAL;
2412 switch (flags[i]) {
2413 case FSCONTEXT_MNT:
2414 if (bad_option(sbsec, FSCONTEXT_MNT, sbsec->sid, sid))
2415 goto out_bad_option;
2416 break;
2417 case CONTEXT_MNT:
2418 if (bad_option(sbsec, CONTEXT_MNT, sbsec->mntpoint_sid, sid))
2419 goto out_bad_option;
2420 break;
2421 case ROOTCONTEXT_MNT: {
2422 struct inode_security_struct *root_isec;
2423 root_isec = sb->s_root->d_inode->i_security;
2424
2425 if (bad_option(sbsec, ROOTCONTEXT_MNT, root_isec->sid, sid))
2426 goto out_bad_option;
2427 break;
2428 }
2429 case DEFCONTEXT_MNT:
2430 if (bad_option(sbsec, DEFCONTEXT_MNT, sbsec->def_sid, sid))
2431 goto out_bad_option;
2432 break;
2433 default:
2434 goto out_free_opts;
2435 }
2436 }
2437
2438 rc = 0;
2439out_free_opts:
2440 security_free_mnt_opts(&opts);
2441out_free_secdata:
2442 free_secdata(secdata);
2443 return rc;
2444out_bad_option:
2445 printk(KERN_WARNING "SELinux: unable to change security options "
2446 "during remount (dev %s, type=%s)\n", sb->s_id,
2447 sb->s_type->name);
2448 goto out_free_opts;
2449}
2450
2446static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data) 2451static int selinux_sb_kern_mount(struct super_block *sb, int flags, void *data)
2447{ 2452{
2448 const struct cred *cred = current_cred(); 2453 const struct cred *cred = current_cred();
@@ -2509,8 +2514,8 @@ static void selinux_inode_free_security(struct inode *inode)
2509} 2514}
2510 2515
2511static int selinux_inode_init_security(struct inode *inode, struct inode *dir, 2516static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
2512 char **name, void **value, 2517 const struct qstr *qstr, char **name,
2513 size_t *len) 2518 void **value, size_t *len)
2514{ 2519{
2515 const struct task_security_struct *tsec = current_security(); 2520 const struct task_security_struct *tsec = current_security();
2516 struct inode_security_struct *dsec; 2521 struct inode_security_struct *dsec;
@@ -2531,7 +2536,7 @@ static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
2531 else if (!newsid || !(sbsec->flags & SE_SBLABELSUPP)) { 2536 else if (!newsid || !(sbsec->flags & SE_SBLABELSUPP)) {
2532 rc = security_transition_sid(sid, dsec->sid, 2537 rc = security_transition_sid(sid, dsec->sid,
2533 inode_mode_to_security_class(inode->i_mode), 2538 inode_mode_to_security_class(inode->i_mode),
2534 &newsid); 2539 qstr, &newsid);
2535 if (rc) { 2540 if (rc) {
2536 printk(KERN_WARNING "%s: " 2541 printk(KERN_WARNING "%s: "
2537 "security_transition_sid failed, rc=%d (dev=%s " 2542 "security_transition_sid failed, rc=%d (dev=%s "
@@ -2932,16 +2937,47 @@ static int selinux_file_ioctl(struct file *file, unsigned int cmd,
2932 unsigned long arg) 2937 unsigned long arg)
2933{ 2938{
2934 const struct cred *cred = current_cred(); 2939 const struct cred *cred = current_cred();
2935 u32 av = 0; 2940 int error = 0;
2936 2941
2937 if (_IOC_DIR(cmd) & _IOC_WRITE) 2942 switch (cmd) {
2938 av |= FILE__WRITE; 2943 case FIONREAD:
2939 if (_IOC_DIR(cmd) & _IOC_READ) 2944 /* fall through */
2940 av |= FILE__READ; 2945 case FIBMAP:
2941 if (!av) 2946 /* fall through */
2942 av = FILE__IOCTL; 2947 case FIGETBSZ:
2948 /* fall through */
2949 case EXT2_IOC_GETFLAGS:
2950 /* fall through */
2951 case EXT2_IOC_GETVERSION:
2952 error = file_has_perm(cred, file, FILE__GETATTR);
2953 break;
2954
2955 case EXT2_IOC_SETFLAGS:
2956 /* fall through */
2957 case EXT2_IOC_SETVERSION:
2958 error = file_has_perm(cred, file, FILE__SETATTR);
2959 break;
2960
2961 /* sys_ioctl() checks */
2962 case FIONBIO:
2963 /* fall through */
2964 case FIOASYNC:
2965 error = file_has_perm(cred, file, 0);
2966 break;
2943 2967
2944 return file_has_perm(cred, file, av); 2968 case KDSKBENT:
2969 case KDSKBSENT:
2970 error = task_has_capability(current, cred, CAP_SYS_TTY_CONFIG,
2971 SECURITY_CAP_AUDIT);
2972 break;
2973
2974 /* default case assumes that the command will go
2975 * to the file's ioctl() function.
2976 */
2977 default:
2978 error = file_has_perm(cred, file, FILE__IOCTL);
2979 }
2980 return error;
2945} 2981}
2946 2982
2947static int default_noexec; 2983static int default_noexec;
@@ -3644,9 +3680,16 @@ static int selinux_skb_peerlbl_sid(struct sk_buff *skb, u16 family, u32 *sid)
3644 3680
3645/* socket security operations */ 3681/* socket security operations */
3646 3682
3647static u32 socket_sockcreate_sid(const struct task_security_struct *tsec) 3683static int socket_sockcreate_sid(const struct task_security_struct *tsec,
3684 u16 secclass, u32 *socksid)
3648{ 3685{
3649 return tsec->sockcreate_sid ? : tsec->sid; 3686 if (tsec->sockcreate_sid > SECSID_NULL) {
3687 *socksid = tsec->sockcreate_sid;
3688 return 0;
3689 }
3690
3691 return security_transition_sid(tsec->sid, tsec->sid, secclass, NULL,
3692 socksid);
3650} 3693}
3651 3694
3652static int sock_has_perm(struct task_struct *task, struct sock *sk, u32 perms) 3695static int sock_has_perm(struct task_struct *task, struct sock *sk, u32 perms)
@@ -3670,12 +3713,16 @@ static int selinux_socket_create(int family, int type,
3670 const struct task_security_struct *tsec = current_security(); 3713 const struct task_security_struct *tsec = current_security();
3671 u32 newsid; 3714 u32 newsid;
3672 u16 secclass; 3715 u16 secclass;
3716 int rc;
3673 3717
3674 if (kern) 3718 if (kern)
3675 return 0; 3719 return 0;
3676 3720
3677 newsid = socket_sockcreate_sid(tsec);
3678 secclass = socket_type_to_security_class(family, type, protocol); 3721 secclass = socket_type_to_security_class(family, type, protocol);
3722 rc = socket_sockcreate_sid(tsec, secclass, &newsid);
3723 if (rc)
3724 return rc;
3725
3679 return avc_has_perm(tsec->sid, newsid, secclass, SOCKET__CREATE, NULL); 3726 return avc_has_perm(tsec->sid, newsid, secclass, SOCKET__CREATE, NULL);
3680} 3727}
3681 3728
@@ -3687,12 +3734,16 @@ static int selinux_socket_post_create(struct socket *sock, int family,
3687 struct sk_security_struct *sksec; 3734 struct sk_security_struct *sksec;
3688 int err = 0; 3735 int err = 0;
3689 3736
3737 isec->sclass = socket_type_to_security_class(family, type, protocol);
3738
3690 if (kern) 3739 if (kern)
3691 isec->sid = SECINITSID_KERNEL; 3740 isec->sid = SECINITSID_KERNEL;
3692 else 3741 else {
3693 isec->sid = socket_sockcreate_sid(tsec); 3742 err = socket_sockcreate_sid(tsec, isec->sclass, &(isec->sid));
3743 if (err)
3744 return err;
3745 }
3694 3746
3695 isec->sclass = socket_type_to_security_class(family, type, protocol);
3696 isec->initialized = 1; 3747 isec->initialized = 1;
3697 3748
3698 if (sock->sk) { 3749 if (sock->sk) {
@@ -4002,7 +4053,6 @@ static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb,
4002{ 4053{
4003 int err = 0; 4054 int err = 0;
4004 struct sk_security_struct *sksec = sk->sk_security; 4055 struct sk_security_struct *sksec = sk->sk_security;
4005 u32 peer_sid;
4006 u32 sk_sid = sksec->sid; 4056 u32 sk_sid = sksec->sid;
4007 struct common_audit_data ad; 4057 struct common_audit_data ad;
4008 char *addrp; 4058 char *addrp;
@@ -4021,20 +4071,10 @@ static int selinux_sock_rcv_skb_compat(struct sock *sk, struct sk_buff *skb,
4021 return err; 4071 return err;
4022 } 4072 }
4023 4073
4024 if (selinux_policycap_netpeer) { 4074 err = selinux_netlbl_sock_rcv_skb(sksec, skb, family, &ad);
4025 err = selinux_skb_peerlbl_sid(skb, family, &peer_sid); 4075 if (err)
4026 if (err) 4076 return err;
4027 return err; 4077 err = selinux_xfrm_sock_rcv_skb(sksec->sid, skb, &ad);
4028 err = avc_has_perm(sk_sid, peer_sid,
4029 SECCLASS_PEER, PEER__RECV, &ad);
4030 if (err)
4031 selinux_netlbl_err(skb, err, 0);
4032 } else {
4033 err = selinux_netlbl_sock_rcv_skb(sksec, skb, family, &ad);
4034 if (err)
4035 return err;
4036 err = selinux_xfrm_sock_rcv_skb(sksec->sid, skb, &ad);
4037 }
4038 4078
4039 return err; 4079 return err;
4040} 4080}
@@ -4529,9 +4569,8 @@ static unsigned int selinux_ip_postroute_compat(struct sk_buff *skb,
4529 SECCLASS_PACKET, PACKET__SEND, &ad)) 4569 SECCLASS_PACKET, PACKET__SEND, &ad))
4530 return NF_DROP_ERR(-ECONNREFUSED); 4570 return NF_DROP_ERR(-ECONNREFUSED);
4531 4571
4532 if (selinux_policycap_netpeer) 4572 if (selinux_xfrm_postroute_last(sksec->sid, skb, &ad, proto))
4533 if (selinux_xfrm_postroute_last(sksec->sid, skb, &ad, proto)) 4573 return NF_DROP_ERR(-ECONNREFUSED);
4534 return NF_DROP_ERR(-ECONNREFUSED);
4535 4574
4536 return NF_ACCEPT; 4575 return NF_ACCEPT;
4537} 4576}
@@ -4574,27 +4613,14 @@ static unsigned int selinux_ip_postroute(struct sk_buff *skb, int ifindex,
4574 * from the sending socket, otherwise use the kernel's sid */ 4613 * from the sending socket, otherwise use the kernel's sid */
4575 sk = skb->sk; 4614 sk = skb->sk;
4576 if (sk == NULL) { 4615 if (sk == NULL) {
4577 switch (family) { 4616 if (skb->skb_iif) {
4578 case PF_INET: 4617 secmark_perm = PACKET__FORWARD_OUT;
4579 if (IPCB(skb)->flags & IPSKB_FORWARDED)
4580 secmark_perm = PACKET__FORWARD_OUT;
4581 else
4582 secmark_perm = PACKET__SEND;
4583 break;
4584 case PF_INET6:
4585 if (IP6CB(skb)->flags & IP6SKB_FORWARDED)
4586 secmark_perm = PACKET__FORWARD_OUT;
4587 else
4588 secmark_perm = PACKET__SEND;
4589 break;
4590 default:
4591 return NF_DROP_ERR(-ECONNREFUSED);
4592 }
4593 if (secmark_perm == PACKET__FORWARD_OUT) {
4594 if (selinux_skb_peerlbl_sid(skb, family, &peer_sid)) 4618 if (selinux_skb_peerlbl_sid(skb, family, &peer_sid))
4595 return NF_DROP; 4619 return NF_DROP;
4596 } else 4620 } else {
4621 secmark_perm = PACKET__SEND;
4597 peer_sid = SECINITSID_KERNEL; 4622 peer_sid = SECINITSID_KERNEL;
4623 }
4598 } else { 4624 } else {
4599 struct sk_security_struct *sksec = sk->sk_security; 4625 struct sk_security_struct *sksec = sk->sk_security;
4600 peer_sid = sksec->sid; 4626 peer_sid = sksec->sid;
@@ -4848,7 +4874,7 @@ static int selinux_msg_queue_msgsnd(struct msg_queue *msq, struct msg_msg *msg,
4848 * message queue this message will be stored in 4874 * message queue this message will be stored in
4849 */ 4875 */
4850 rc = security_transition_sid(sid, isec->sid, SECCLASS_MSG, 4876 rc = security_transition_sid(sid, isec->sid, SECCLASS_MSG,
4851 &msec->sid); 4877 NULL, &msec->sid);
4852 if (rc) 4878 if (rc)
4853 return rc; 4879 return rc;
4854 } 4880 }
@@ -5402,7 +5428,6 @@ static struct security_operations selinux_ops = {
5402 .ptrace_traceme = selinux_ptrace_traceme, 5428 .ptrace_traceme = selinux_ptrace_traceme,
5403 .capget = selinux_capget, 5429 .capget = selinux_capget,
5404 .capset = selinux_capset, 5430 .capset = selinux_capset,
5405 .sysctl = selinux_sysctl,
5406 .capable = selinux_capable, 5431 .capable = selinux_capable,
5407 .quotactl = selinux_quotactl, 5432 .quotactl = selinux_quotactl,
5408 .quota_on = selinux_quota_on, 5433 .quota_on = selinux_quota_on,
@@ -5420,6 +5445,7 @@ static struct security_operations selinux_ops = {
5420 .sb_alloc_security = selinux_sb_alloc_security, 5445 .sb_alloc_security = selinux_sb_alloc_security,
5421 .sb_free_security = selinux_sb_free_security, 5446 .sb_free_security = selinux_sb_free_security,
5422 .sb_copy_data = selinux_sb_copy_data, 5447 .sb_copy_data = selinux_sb_copy_data,
5448 .sb_remount = selinux_sb_remount,
5423 .sb_kern_mount = selinux_sb_kern_mount, 5449 .sb_kern_mount = selinux_sb_kern_mount,
5424 .sb_show_options = selinux_sb_show_options, 5450 .sb_show_options = selinux_sb_show_options,
5425 .sb_statfs = selinux_sb_statfs, 5451 .sb_statfs = selinux_sb_statfs,
diff --git a/security/selinux/include/classmap.h b/security/selinux/include/classmap.h
index 7ed3663332ec..b8c53723e09b 100644
--- a/security/selinux/include/classmap.h
+++ b/security/selinux/include/classmap.h
@@ -12,6 +12,10 @@
12#define COMMON_IPC_PERMS "create", "destroy", "getattr", "setattr", "read", \ 12#define COMMON_IPC_PERMS "create", "destroy", "getattr", "setattr", "read", \
13 "write", "associate", "unix_read", "unix_write" 13 "write", "associate", "unix_read", "unix_write"
14 14
15/*
16 * Note: The name for any socket class should be suffixed by "socket",
17 * and doesn't contain more than one substr of "socket".
18 */
15struct security_class_mapping secclass_map[] = { 19struct security_class_mapping secclass_map[] = {
16 { "security", 20 { "security",
17 { "compute_av", "compute_create", "compute_member", 21 { "compute_av", "compute_create", "compute_member",
@@ -132,8 +136,7 @@ struct security_class_mapping secclass_map[] = {
132 { "appletalk_socket", 136 { "appletalk_socket",
133 { COMMON_SOCK_PERMS, NULL } }, 137 { COMMON_SOCK_PERMS, NULL } },
134 { "packet", 138 { "packet",
135 { "send", "recv", "relabelto", "flow_in", "flow_out", 139 { "send", "recv", "relabelto", "forward_in", "forward_out", NULL } },
136 "forward_in", "forward_out", NULL } },
137 { "key", 140 { "key",
138 { "view", "read", "write", "search", "link", "setattr", "create", 141 { "view", "read", "write", "search", "link", "setattr", "create",
139 NULL } }, 142 NULL } },
diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h
index 671273eb1115..348eb00cb668 100644
--- a/security/selinux/include/security.h
+++ b/security/selinux/include/security.h
@@ -8,6 +8,7 @@
8#ifndef _SELINUX_SECURITY_H_ 8#ifndef _SELINUX_SECURITY_H_
9#define _SELINUX_SECURITY_H_ 9#define _SELINUX_SECURITY_H_
10 10
11#include <linux/dcache.h>
11#include <linux/magic.h> 12#include <linux/magic.h>
12#include <linux/types.h> 13#include <linux/types.h>
13#include "flask.h" 14#include "flask.h"
@@ -28,13 +29,14 @@
28#define POLICYDB_VERSION_POLCAP 22 29#define POLICYDB_VERSION_POLCAP 22
29#define POLICYDB_VERSION_PERMISSIVE 23 30#define POLICYDB_VERSION_PERMISSIVE 23
30#define POLICYDB_VERSION_BOUNDARY 24 31#define POLICYDB_VERSION_BOUNDARY 24
32#define POLICYDB_VERSION_FILENAME_TRANS 25
31 33
32/* Range of policy versions we understand*/ 34/* Range of policy versions we understand*/
33#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE 35#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
34#ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX 36#ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX
35#define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE 37#define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
36#else 38#else
37#define POLICYDB_VERSION_MAX POLICYDB_VERSION_BOUNDARY 39#define POLICYDB_VERSION_MAX POLICYDB_VERSION_FILENAME_TRANS
38#endif 40#endif
39 41
40/* Mask for just the mount related flags */ 42/* Mask for just the mount related flags */
@@ -106,8 +108,8 @@ void security_compute_av(u32 ssid, u32 tsid,
106void security_compute_av_user(u32 ssid, u32 tsid, 108void security_compute_av_user(u32 ssid, u32 tsid,
107 u16 tclass, struct av_decision *avd); 109 u16 tclass, struct av_decision *avd);
108 110
109int security_transition_sid(u32 ssid, u32 tsid, 111int security_transition_sid(u32 ssid, u32 tsid, u16 tclass,
110 u16 tclass, u32 *out_sid); 112 const struct qstr *qstr, u32 *out_sid);
111 113
112int security_transition_sid_user(u32 ssid, u32 tsid, 114int security_transition_sid_user(u32 ssid, u32 tsid,
113 u16 tclass, u32 *out_sid); 115 u16 tclass, u32 *out_sid);
diff --git a/security/selinux/ss/avtab.h b/security/selinux/ss/avtab.h
index dff0c75345c1..63ce2f9e441d 100644
--- a/security/selinux/ss/avtab.h
+++ b/security/selinux/ss/avtab.h
@@ -14,7 +14,7 @@
14 * 14 *
15 * Copyright (C) 2003 Tresys Technology, LLC 15 * Copyright (C) 2003 Tresys Technology, LLC
16 * This program is free software; you can redistribute it and/or modify 16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by 17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation, version 2. 18 * the Free Software Foundation, version 2.
19 * 19 *
20 * Updated: Yuichi Nakamura <ynakam@hitachisoft.jp> 20 * Updated: Yuichi Nakamura <ynakam@hitachisoft.jp>
@@ -27,16 +27,16 @@ struct avtab_key {
27 u16 source_type; /* source type */ 27 u16 source_type; /* source type */
28 u16 target_type; /* target type */ 28 u16 target_type; /* target type */
29 u16 target_class; /* target object class */ 29 u16 target_class; /* target object class */
30#define AVTAB_ALLOWED 1 30#define AVTAB_ALLOWED 0x0001
31#define AVTAB_AUDITALLOW 2 31#define AVTAB_AUDITALLOW 0x0002
32#define AVTAB_AUDITDENY 4 32#define AVTAB_AUDITDENY 0x0004
33#define AVTAB_AV (AVTAB_ALLOWED | AVTAB_AUDITALLOW | AVTAB_AUDITDENY) 33#define AVTAB_AV (AVTAB_ALLOWED | AVTAB_AUDITALLOW | AVTAB_AUDITDENY)
34#define AVTAB_TRANSITION 16 34#define AVTAB_TRANSITION 0x0010
35#define AVTAB_MEMBER 32 35#define AVTAB_MEMBER 0x0020
36#define AVTAB_CHANGE 64 36#define AVTAB_CHANGE 0x0040
37#define AVTAB_TYPE (AVTAB_TRANSITION | AVTAB_MEMBER | AVTAB_CHANGE) 37#define AVTAB_TYPE (AVTAB_TRANSITION | AVTAB_MEMBER | AVTAB_CHANGE)
38#define AVTAB_ENABLED_OLD 0x80000000 /* reserved for used in cond_avtab */ 38#define AVTAB_ENABLED_OLD 0x80000000 /* reserved for used in cond_avtab */
39#define AVTAB_ENABLED 0x8000 /* reserved for used in cond_avtab */ 39#define AVTAB_ENABLED 0x8000 /* reserved for used in cond_avtab */
40 u16 specified; /* what field is specified */ 40 u16 specified; /* what field is specified */
41}; 41};
42 42
@@ -86,7 +86,6 @@ void avtab_cache_destroy(void);
86 86
87#define MAX_AVTAB_HASH_BITS 11 87#define MAX_AVTAB_HASH_BITS 11
88#define MAX_AVTAB_HASH_BUCKETS (1 << MAX_AVTAB_HASH_BITS) 88#define MAX_AVTAB_HASH_BUCKETS (1 << MAX_AVTAB_HASH_BITS)
89#define MAX_AVTAB_HASH_MASK (MAX_AVTAB_HASH_BUCKETS-1)
90 89
91#endif /* _SS_AVTAB_H_ */ 90#endif /* _SS_AVTAB_H_ */
92 91
diff --git a/security/selinux/ss/ebitmap.h b/security/selinux/ss/ebitmap.h
index 1f4e93c2ae86..922f8afa89dd 100644
--- a/security/selinux/ss/ebitmap.h
+++ b/security/selinux/ss/ebitmap.h
@@ -36,7 +36,6 @@ struct ebitmap {
36}; 36};
37 37
38#define ebitmap_length(e) ((e)->highbit) 38#define ebitmap_length(e) ((e)->highbit)
39#define ebitmap_startbit(e) ((e)->node ? (e)->node->startbit : 0)
40 39
41static inline unsigned int ebitmap_start_positive(struct ebitmap *e, 40static inline unsigned int ebitmap_start_positive(struct ebitmap *e,
42 struct ebitmap_node **n) 41 struct ebitmap_node **n)
diff --git a/security/selinux/ss/mls.c b/security/selinux/ss/mls.c
index 1ef8e4e89880..e96174216bc9 100644
--- a/security/selinux/ss/mls.c
+++ b/security/selinux/ss/mls.c
@@ -512,7 +512,8 @@ int mls_compute_sid(struct context *scontext,
512 struct context *tcontext, 512 struct context *tcontext,
513 u16 tclass, 513 u16 tclass,
514 u32 specified, 514 u32 specified,
515 struct context *newcontext) 515 struct context *newcontext,
516 bool sock)
516{ 517{
517 struct range_trans rtr; 518 struct range_trans rtr;
518 struct mls_range *r; 519 struct mls_range *r;
@@ -531,7 +532,7 @@ int mls_compute_sid(struct context *scontext,
531 return mls_range_set(newcontext, r); 532 return mls_range_set(newcontext, r);
532 /* Fallthrough */ 533 /* Fallthrough */
533 case AVTAB_CHANGE: 534 case AVTAB_CHANGE:
534 if (tclass == policydb.process_class) 535 if ((tclass == policydb.process_class) || (sock == true))
535 /* Use the process MLS attributes. */ 536 /* Use the process MLS attributes. */
536 return mls_context_cpy(newcontext, scontext); 537 return mls_context_cpy(newcontext, scontext);
537 else 538 else
diff --git a/security/selinux/ss/mls.h b/security/selinux/ss/mls.h
index cd9152632e54..037bf9d82d41 100644
--- a/security/selinux/ss/mls.h
+++ b/security/selinux/ss/mls.h
@@ -49,7 +49,8 @@ int mls_compute_sid(struct context *scontext,
49 struct context *tcontext, 49 struct context *tcontext,
50 u16 tclass, 50 u16 tclass,
51 u32 specified, 51 u32 specified,
52 struct context *newcontext); 52 struct context *newcontext,
53 bool sock);
53 54
54int mls_setup_user_range(struct context *fromcon, struct user_datum *user, 55int mls_setup_user_range(struct context *fromcon, struct user_datum *user,
55 struct context *usercon); 56 struct context *usercon);
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index 57363562f0f8..e7b850ad57ee 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -123,6 +123,11 @@ static struct policydb_compat_info policydb_compat[] = {
123 .sym_num = SYM_NUM, 123 .sym_num = SYM_NUM,
124 .ocon_num = OCON_NUM, 124 .ocon_num = OCON_NUM,
125 }, 125 },
126 {
127 .version = POLICYDB_VERSION_FILENAME_TRANS,
128 .sym_num = SYM_NUM,
129 .ocon_num = OCON_NUM,
130 },
126}; 131};
127 132
128static struct policydb_compat_info *policydb_lookup_compat(int version) 133static struct policydb_compat_info *policydb_lookup_compat(int version)
@@ -704,6 +709,7 @@ void policydb_destroy(struct policydb *p)
704 int i; 709 int i;
705 struct role_allow *ra, *lra = NULL; 710 struct role_allow *ra, *lra = NULL;
706 struct role_trans *tr, *ltr = NULL; 711 struct role_trans *tr, *ltr = NULL;
712 struct filename_trans *ft, *nft;
707 713
708 for (i = 0; i < SYM_NUM; i++) { 714 for (i = 0; i < SYM_NUM; i++) {
709 cond_resched(); 715 cond_resched();
@@ -781,6 +787,15 @@ void policydb_destroy(struct policydb *p)
781 } 787 }
782 flex_array_free(p->type_attr_map_array); 788 flex_array_free(p->type_attr_map_array);
783 } 789 }
790
791 ft = p->filename_trans;
792 while (ft) {
793 nft = ft->next;
794 kfree(ft->name);
795 kfree(ft);
796 ft = nft;
797 }
798
784 ebitmap_destroy(&p->policycaps); 799 ebitmap_destroy(&p->policycaps);
785 ebitmap_destroy(&p->permissive_map); 800 ebitmap_destroy(&p->permissive_map);
786 801
@@ -1788,6 +1803,76 @@ out:
1788 return rc; 1803 return rc;
1789} 1804}
1790 1805
1806static int filename_trans_read(struct policydb *p, void *fp)
1807{
1808 struct filename_trans *ft, *last;
1809 u32 nel, len;
1810 char *name;
1811 __le32 buf[4];
1812 int rc, i;
1813
1814 if (p->policyvers < POLICYDB_VERSION_FILENAME_TRANS)
1815 return 0;
1816
1817 rc = next_entry(buf, fp, sizeof(u32));
1818 if (rc)
1819 goto out;
1820 nel = le32_to_cpu(buf[0]);
1821
1822 printk(KERN_ERR "%s: nel=%d\n", __func__, nel);
1823
1824 last = p->filename_trans;
1825 while (last && last->next)
1826 last = last->next;
1827
1828 for (i = 0; i < nel; i++) {
1829 rc = -ENOMEM;
1830 ft = kzalloc(sizeof(*ft), GFP_KERNEL);
1831 if (!ft)
1832 goto out;
1833
1834 /* add it to the tail of the list */
1835 if (!last)
1836 p->filename_trans = ft;
1837 else
1838 last->next = ft;
1839 last = ft;
1840
1841 /* length of the path component string */
1842 rc = next_entry(buf, fp, sizeof(u32));
1843 if (rc)
1844 goto out;
1845 len = le32_to_cpu(buf[0]);
1846
1847 rc = -ENOMEM;
1848 name = kmalloc(len + 1, GFP_KERNEL);
1849 if (!name)
1850 goto out;
1851
1852 ft->name = name;
1853
1854 /* path component string */
1855 rc = next_entry(name, fp, len);
1856 if (rc)
1857 goto out;
1858 name[len] = 0;
1859
1860 printk(KERN_ERR "%s: ft=%p ft->name=%p ft->name=%s\n", __func__, ft, ft->name, ft->name);
1861
1862 rc = next_entry(buf, fp, sizeof(u32) * 4);
1863 if (rc)
1864 goto out;
1865
1866 ft->stype = le32_to_cpu(buf[0]);
1867 ft->ttype = le32_to_cpu(buf[1]);
1868 ft->tclass = le32_to_cpu(buf[2]);
1869 ft->otype = le32_to_cpu(buf[3]);
1870 }
1871 rc = 0;
1872out:
1873 return rc;
1874}
1875
1791static int genfs_read(struct policydb *p, void *fp) 1876static int genfs_read(struct policydb *p, void *fp)
1792{ 1877{
1793 int i, j, rc; 1878 int i, j, rc;
@@ -2251,6 +2336,10 @@ int policydb_read(struct policydb *p, void *fp)
2251 lra = ra; 2336 lra = ra;
2252 } 2337 }
2253 2338
2339 rc = filename_trans_read(p, fp);
2340 if (rc)
2341 goto bad;
2342
2254 rc = policydb_index(p); 2343 rc = policydb_index(p);
2255 if (rc) 2344 if (rc)
2256 goto bad; 2345 goto bad;
@@ -3025,6 +3114,43 @@ static int range_write(struct policydb *p, void *fp)
3025 return 0; 3114 return 0;
3026} 3115}
3027 3116
3117static int filename_trans_write(struct policydb *p, void *fp)
3118{
3119 struct filename_trans *ft;
3120 u32 len, nel = 0;
3121 __le32 buf[4];
3122 int rc;
3123
3124 for (ft = p->filename_trans; ft; ft = ft->next)
3125 nel++;
3126
3127 buf[0] = cpu_to_le32(nel);
3128 rc = put_entry(buf, sizeof(u32), 1, fp);
3129 if (rc)
3130 return rc;
3131
3132 for (ft = p->filename_trans; ft; ft = ft->next) {
3133 len = strlen(ft->name);
3134 buf[0] = cpu_to_le32(len);
3135 rc = put_entry(buf, sizeof(u32), 1, fp);
3136 if (rc)
3137 return rc;
3138
3139 rc = put_entry(ft->name, sizeof(char), len, fp);
3140 if (rc)
3141 return rc;
3142
3143 buf[0] = ft->stype;
3144 buf[1] = ft->ttype;
3145 buf[2] = ft->tclass;
3146 buf[3] = ft->otype;
3147
3148 rc = put_entry(buf, sizeof(u32), 4, fp);
3149 if (rc)
3150 return rc;
3151 }
3152 return 0;
3153}
3028/* 3154/*
3029 * Write the configuration data in a policy database 3155 * Write the configuration data in a policy database
3030 * structure to a policy database binary representation 3156 * structure to a policy database binary representation
@@ -3135,6 +3261,10 @@ int policydb_write(struct policydb *p, void *fp)
3135 if (rc) 3261 if (rc)
3136 return rc; 3262 return rc;
3137 3263
3264 rc = filename_trans_write(p, fp);
3265 if (rc)
3266 return rc;
3267
3138 rc = ocontext_write(p, info, fp); 3268 rc = ocontext_write(p, info, fp);
3139 if (rc) 3269 if (rc)
3140 return rc; 3270 return rc;
diff --git a/security/selinux/ss/policydb.h b/security/selinux/ss/policydb.h
index 4e3ab9d0b315..732ea4a68682 100644
--- a/security/selinux/ss/policydb.h
+++ b/security/selinux/ss/policydb.h
@@ -77,6 +77,15 @@ struct role_trans {
77 struct role_trans *next; 77 struct role_trans *next;
78}; 78};
79 79
80struct filename_trans {
81 struct filename_trans *next;
82 u32 stype; /* current process */
83 u32 ttype; /* parent dir context */
84 u16 tclass; /* class of new object */
85 const char *name; /* last path component */
86 u32 otype; /* expected of new object */
87};
88
80struct role_allow { 89struct role_allow {
81 u32 role; /* current role */ 90 u32 role; /* current role */
82 u32 new_role; /* new role */ 91 u32 new_role; /* new role */
@@ -217,6 +226,9 @@ struct policydb {
217 /* role transitions */ 226 /* role transitions */
218 struct role_trans *role_tr; 227 struct role_trans *role_tr;
219 228
229 /* file transitions with the last path component */
230 struct filename_trans *filename_trans;
231
220 /* bools indexed by (value - 1) */ 232 /* bools indexed by (value - 1) */
221 struct cond_bool_datum **bool_val_to_struct; 233 struct cond_bool_datum **bool_val_to_struct;
222 /* type enforcement conditional access vectors and transitions */ 234 /* type enforcement conditional access vectors and transitions */
@@ -302,7 +314,7 @@ static inline int next_entry(void *buf, struct policy_file *fp, size_t bytes)
302 return 0; 314 return 0;
303} 315}
304 316
305static inline int put_entry(void *buf, size_t bytes, int num, struct policy_file *fp) 317static inline int put_entry(const void *buf, size_t bytes, int num, struct policy_file *fp)
306{ 318{
307 size_t len = bytes * num; 319 size_t len = bytes * num;
308 320
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index a03cfaf0ee07..3e7544d2a07b 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -201,6 +201,21 @@ static u16 unmap_class(u16 tclass)
201 return tclass; 201 return tclass;
202} 202}
203 203
204/*
205 * Get kernel value for class from its policy value
206 */
207static u16 map_class(u16 pol_value)
208{
209 u16 i;
210
211 for (i = 1; i < current_mapping_size; i++) {
212 if (current_mapping[i].value == pol_value)
213 return i;
214 }
215
216 return pol_value;
217}
218
204static void map_decision(u16 tclass, struct av_decision *avd, 219static void map_decision(u16 tclass, struct av_decision *avd,
205 int allow_unknown) 220 int allow_unknown)
206{ 221{
@@ -1343,10 +1358,27 @@ out:
1343 return -EACCES; 1358 return -EACCES;
1344} 1359}
1345 1360
1361static void filename_compute_type(struct policydb *p, struct context *newcontext,
1362 u32 scon, u32 tcon, u16 tclass,
1363 const struct qstr *qstr)
1364{
1365 struct filename_trans *ft;
1366 for (ft = p->filename_trans; ft; ft = ft->next) {
1367 if (ft->stype == scon &&
1368 ft->ttype == tcon &&
1369 ft->tclass == tclass &&
1370 !strcmp(ft->name, qstr->name)) {
1371 newcontext->type = ft->otype;
1372 return;
1373 }
1374 }
1375}
1376
1346static int security_compute_sid(u32 ssid, 1377static int security_compute_sid(u32 ssid,
1347 u32 tsid, 1378 u32 tsid,
1348 u16 orig_tclass, 1379 u16 orig_tclass,
1349 u32 specified, 1380 u32 specified,
1381 const struct qstr *qstr,
1350 u32 *out_sid, 1382 u32 *out_sid,
1351 bool kern) 1383 bool kern)
1352{ 1384{
@@ -1357,6 +1389,7 @@ static int security_compute_sid(u32 ssid,
1357 struct avtab_node *node; 1389 struct avtab_node *node;
1358 u16 tclass; 1390 u16 tclass;
1359 int rc = 0; 1391 int rc = 0;
1392 bool sock;
1360 1393
1361 if (!ss_initialized) { 1394 if (!ss_initialized) {
1362 switch (orig_tclass) { 1395 switch (orig_tclass) {
@@ -1374,10 +1407,13 @@ static int security_compute_sid(u32 ssid,
1374 1407
1375 read_lock(&policy_rwlock); 1408 read_lock(&policy_rwlock);
1376 1409
1377 if (kern) 1410 if (kern) {
1378 tclass = unmap_class(orig_tclass); 1411 tclass = unmap_class(orig_tclass);
1379 else 1412 sock = security_is_socket_class(orig_tclass);
1413 } else {
1380 tclass = orig_tclass; 1414 tclass = orig_tclass;
1415 sock = security_is_socket_class(map_class(tclass));
1416 }
1381 1417
1382 scontext = sidtab_search(&sidtab, ssid); 1418 scontext = sidtab_search(&sidtab, ssid);
1383 if (!scontext) { 1419 if (!scontext) {
@@ -1408,7 +1444,7 @@ static int security_compute_sid(u32 ssid,
1408 } 1444 }
1409 1445
1410 /* Set the role and type to default values. */ 1446 /* Set the role and type to default values. */
1411 if (tclass == policydb.process_class) { 1447 if ((tclass == policydb.process_class) || (sock == true)) {
1412 /* Use the current role and type of process. */ 1448 /* Use the current role and type of process. */
1413 newcontext.role = scontext->role; 1449 newcontext.role = scontext->role;
1414 newcontext.type = scontext->type; 1450 newcontext.type = scontext->type;
@@ -1442,6 +1478,11 @@ static int security_compute_sid(u32 ssid,
1442 newcontext.type = avdatum->data; 1478 newcontext.type = avdatum->data;
1443 } 1479 }
1444 1480
1481 /* if we have a qstr this is a file trans check so check those rules */
1482 if (qstr)
1483 filename_compute_type(&policydb, &newcontext, scontext->type,
1484 tcontext->type, tclass, qstr);
1485
1445 /* Check for class-specific changes. */ 1486 /* Check for class-specific changes. */
1446 if (tclass == policydb.process_class) { 1487 if (tclass == policydb.process_class) {
1447 if (specified & AVTAB_TRANSITION) { 1488 if (specified & AVTAB_TRANSITION) {
@@ -1460,7 +1501,8 @@ static int security_compute_sid(u32 ssid,
1460 1501
1461 /* Set the MLS attributes. 1502 /* Set the MLS attributes.
1462 This is done last because it may allocate memory. */ 1503 This is done last because it may allocate memory. */
1463 rc = mls_compute_sid(scontext, tcontext, tclass, specified, &newcontext); 1504 rc = mls_compute_sid(scontext, tcontext, tclass, specified,
1505 &newcontext, sock);
1464 if (rc) 1506 if (rc)
1465 goto out_unlock; 1507 goto out_unlock;
1466 1508
@@ -1495,22 +1537,17 @@ out:
1495 * if insufficient memory is available, or %0 if the new SID was 1537 * if insufficient memory is available, or %0 if the new SID was
1496 * computed successfully. 1538 * computed successfully.
1497 */ 1539 */
1498int security_transition_sid(u32 ssid, 1540int security_transition_sid(u32 ssid, u32 tsid, u16 tclass,
1499 u32 tsid, 1541 const struct qstr *qstr, u32 *out_sid)
1500 u16 tclass,
1501 u32 *out_sid)
1502{ 1542{
1503 return security_compute_sid(ssid, tsid, tclass, AVTAB_TRANSITION, 1543 return security_compute_sid(ssid, tsid, tclass, AVTAB_TRANSITION,
1504 out_sid, true); 1544 qstr, out_sid, true);
1505} 1545}
1506 1546
1507int security_transition_sid_user(u32 ssid, 1547int security_transition_sid_user(u32 ssid, u32 tsid, u16 tclass, u32 *out_sid)
1508 u32 tsid,
1509 u16 tclass,
1510 u32 *out_sid)
1511{ 1548{
1512 return security_compute_sid(ssid, tsid, tclass, AVTAB_TRANSITION, 1549 return security_compute_sid(ssid, tsid, tclass, AVTAB_TRANSITION,
1513 out_sid, false); 1550 NULL, out_sid, false);
1514} 1551}
1515 1552
1516/** 1553/**
@@ -1531,8 +1568,8 @@ int security_member_sid(u32 ssid,
1531 u16 tclass, 1568 u16 tclass,
1532 u32 *out_sid) 1569 u32 *out_sid)
1533{ 1570{
1534 return security_compute_sid(ssid, tsid, tclass, AVTAB_MEMBER, out_sid, 1571 return security_compute_sid(ssid, tsid, tclass, AVTAB_MEMBER, NULL,
1535 false); 1572 out_sid, false);
1536} 1573}
1537 1574
1538/** 1575/**
@@ -1553,8 +1590,8 @@ int security_change_sid(u32 ssid,
1553 u16 tclass, 1590 u16 tclass,
1554 u32 *out_sid) 1591 u32 *out_sid)
1555{ 1592{
1556 return security_compute_sid(ssid, tsid, tclass, AVTAB_CHANGE, out_sid, 1593 return security_compute_sid(ssid, tsid, tclass, AVTAB_CHANGE, NULL,
1557 false); 1594 out_sid, false);
1558} 1595}
1559 1596
1560/* Clone the SID into the new SID table. */ 1597/* Clone the SID into the new SID table. */
diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index fff78d3b51a2..728c57e3d65d 100644
--- a/security/selinux/xfrm.c
+++ b/security/selinux/xfrm.c
@@ -208,7 +208,7 @@ static int selinux_xfrm_sec_ctx_alloc(struct xfrm_sec_ctx **ctxp,
208 if (!uctx) 208 if (!uctx)
209 goto not_from_user; 209 goto not_from_user;
210 210
211 if (uctx->ctx_doi != XFRM_SC_ALG_SELINUX) 211 if (uctx->ctx_alg != XFRM_SC_ALG_SELINUX)
212 return -EINVAL; 212 return -EINVAL;
213 213
214 str_len = uctx->ctx_len; 214 str_len = uctx->ctx_len;
diff --git a/security/smack/smack.h b/security/smack/smack.h
index 129c4eb8ffb1..b449cfdad21c 100644
--- a/security/smack/smack.h
+++ b/security/smack/smack.h
@@ -52,13 +52,16 @@ struct socket_smack {
52struct inode_smack { 52struct inode_smack {
53 char *smk_inode; /* label of the fso */ 53 char *smk_inode; /* label of the fso */
54 char *smk_task; /* label of the task */ 54 char *smk_task; /* label of the task */
55 char *smk_mmap; /* label of the mmap domain */
55 struct mutex smk_lock; /* initialization lock */ 56 struct mutex smk_lock; /* initialization lock */
56 int smk_flags; /* smack inode flags */ 57 int smk_flags; /* smack inode flags */
57}; 58};
58 59
59struct task_smack { 60struct task_smack {
60 char *smk_task; /* label used for access control */ 61 char *smk_task; /* label for access control */
61 char *smk_forked; /* label when forked */ 62 char *smk_forked; /* label when forked */
63 struct list_head smk_rules; /* per task access rules */
64 struct mutex smk_rules_lock; /* lock for the rules */
62}; 65};
63 66
64#define SMK_INODE_INSTANT 0x01 /* inode is instantiated */ 67#define SMK_INODE_INSTANT 0x01 /* inode is instantiated */
@@ -152,12 +155,6 @@ struct smack_known {
152#define SMACK_MAGIC 0x43415d53 /* "SMAC" */ 155#define SMACK_MAGIC 0x43415d53 /* "SMAC" */
153 156
154/* 157/*
155 * A limit on the number of entries in the lists
156 * makes some of the list administration easier.
157 */
158#define SMACK_LIST_MAX 10000
159
160/*
161 * CIPSO defaults. 158 * CIPSO defaults.
162 */ 159 */
163#define SMACK_CIPSO_DOI_DEFAULT 3 /* Historical */ 160#define SMACK_CIPSO_DOI_DEFAULT 3 /* Historical */
@@ -174,9 +171,7 @@ struct smack_known {
174/* 171/*
175 * Just to make the common cases easier to deal with 172 * Just to make the common cases easier to deal with
176 */ 173 */
177#define MAY_ANY (MAY_READ | MAY_WRITE | MAY_APPEND | MAY_EXEC)
178#define MAY_ANYREAD (MAY_READ | MAY_EXEC) 174#define MAY_ANYREAD (MAY_READ | MAY_EXEC)
179#define MAY_ANYWRITE (MAY_WRITE | MAY_APPEND)
180#define MAY_READWRITE (MAY_READ | MAY_WRITE) 175#define MAY_READWRITE (MAY_READ | MAY_WRITE)
181#define MAY_NOT 0 176#define MAY_NOT 0
182 177
@@ -202,7 +197,7 @@ struct inode_smack *new_inode_smack(char *);
202/* 197/*
203 * These functions are in smack_access.c 198 * These functions are in smack_access.c
204 */ 199 */
205int smk_access_entry(char *, char *); 200int smk_access_entry(char *, char *, struct list_head *);
206int smk_access(char *, char *, int, struct smk_audit_info *); 201int smk_access(char *, char *, int, struct smk_audit_info *);
207int smk_curacc(char *, u32, struct smk_audit_info *); 202int smk_curacc(char *, u32, struct smk_audit_info *);
208int smack_to_cipso(const char *, struct smack_cipso *); 203int smack_to_cipso(const char *, struct smack_cipso *);
diff --git a/security/smack/smack_access.c b/security/smack/smack_access.c
index 7ba8478f599e..86453db4333d 100644
--- a/security/smack/smack_access.c
+++ b/security/smack/smack_access.c
@@ -70,10 +70,11 @@ int log_policy = SMACK_AUDIT_DENIED;
70 * smk_access_entry - look up matching access rule 70 * smk_access_entry - look up matching access rule
71 * @subject_label: a pointer to the subject's Smack label 71 * @subject_label: a pointer to the subject's Smack label
72 * @object_label: a pointer to the object's Smack label 72 * @object_label: a pointer to the object's Smack label
73 * @rule_list: the list of rules to search
73 * 74 *
74 * This function looks up the subject/object pair in the 75 * This function looks up the subject/object pair in the
75 * access rule list and returns pointer to the matching rule if found, 76 * access rule list and returns the access mode. If no
76 * NULL otherwise. 77 * entry is found returns -ENOENT.
77 * 78 *
78 * NOTE: 79 * NOTE:
79 * Even though Smack labels are usually shared on smack_list 80 * Even though Smack labels are usually shared on smack_list
@@ -85,13 +86,13 @@ int log_policy = SMACK_AUDIT_DENIED;
85 * will be on the list, so checking the pointers may be a worthwhile 86 * will be on the list, so checking the pointers may be a worthwhile
86 * optimization. 87 * optimization.
87 */ 88 */
88int smk_access_entry(char *subject_label, char *object_label) 89int smk_access_entry(char *subject_label, char *object_label,
90 struct list_head *rule_list)
89{ 91{
90 u32 may = MAY_NOT; 92 int may = -ENOENT;
91 struct smack_rule *srp; 93 struct smack_rule *srp;
92 94
93 rcu_read_lock(); 95 list_for_each_entry_rcu(srp, rule_list, list) {
94 list_for_each_entry_rcu(srp, &smack_rule_list, list) {
95 if (srp->smk_subject == subject_label || 96 if (srp->smk_subject == subject_label ||
96 strcmp(srp->smk_subject, subject_label) == 0) { 97 strcmp(srp->smk_subject, subject_label) == 0) {
97 if (srp->smk_object == object_label || 98 if (srp->smk_object == object_label ||
@@ -101,7 +102,6 @@ int smk_access_entry(char *subject_label, char *object_label)
101 } 102 }
102 } 103 }
103 } 104 }
104 rcu_read_unlock();
105 105
106 return may; 106 return may;
107} 107}
@@ -129,7 +129,7 @@ int smk_access_entry(char *subject_label, char *object_label)
129int smk_access(char *subject_label, char *object_label, int request, 129int smk_access(char *subject_label, char *object_label, int request,
130 struct smk_audit_info *a) 130 struct smk_audit_info *a)
131{ 131{
132 u32 may = MAY_NOT; 132 int may = MAY_NOT;
133 int rc = 0; 133 int rc = 0;
134 134
135 /* 135 /*
@@ -181,13 +181,14 @@ int smk_access(char *subject_label, char *object_label, int request,
181 * Beyond here an explicit relationship is required. 181 * Beyond here an explicit relationship is required.
182 * If the requested access is contained in the available 182 * If the requested access is contained in the available
183 * access (e.g. read is included in readwrite) it's 183 * access (e.g. read is included in readwrite) it's
184 * good. 184 * good. A negative response from smk_access_entry()
185 */ 185 * indicates there is no entry for this pair.
186 may = smk_access_entry(subject_label, object_label);
187 /*
188 * This is a bit map operation.
189 */ 186 */
190 if ((request & may) == request) 187 rcu_read_lock();
188 may = smk_access_entry(subject_label, object_label, &smack_rule_list);
189 rcu_read_unlock();
190
191 if (may > 0 && (request & may) == request)
191 goto out_audit; 192 goto out_audit;
192 193
193 rc = -EACCES; 194 rc = -EACCES;
@@ -212,12 +213,27 @@ out_audit:
212 */ 213 */
213int smk_curacc(char *obj_label, u32 mode, struct smk_audit_info *a) 214int smk_curacc(char *obj_label, u32 mode, struct smk_audit_info *a)
214{ 215{
216 struct task_smack *tsp = current_security();
217 char *sp = smk_of_task(tsp);
218 int may;
215 int rc; 219 int rc;
216 char *sp = smk_of_current();
217 220
221 /*
222 * Check the global rule list
223 */
218 rc = smk_access(sp, obj_label, mode, NULL); 224 rc = smk_access(sp, obj_label, mode, NULL);
219 if (rc == 0) 225 if (rc == 0) {
220 goto out_audit; 226 /*
227 * If there is an entry in the task's rule list
228 * it can further restrict access.
229 */
230 may = smk_access_entry(sp, obj_label, &tsp->smk_rules);
231 if (may < 0)
232 goto out_audit;
233 if ((mode & may) == mode)
234 goto out_audit;
235 rc = -EACCES;
236 }
221 237
222 /* 238 /*
223 * Return if a specific label has been designated as the 239 * Return if a specific label has been designated as the
@@ -228,7 +244,7 @@ int smk_curacc(char *obj_label, u32 mode, struct smk_audit_info *a)
228 goto out_audit; 244 goto out_audit;
229 245
230 if (capable(CAP_MAC_OVERRIDE)) 246 if (capable(CAP_MAC_OVERRIDE))
231 return 0; 247 rc = 0;
232 248
233out_audit: 249out_audit:
234#ifdef CONFIG_AUDIT 250#ifdef CONFIG_AUDIT
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 533bf3255d7f..23c7a6d0c80c 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -33,6 +33,7 @@
33#include <net/cipso_ipv4.h> 33#include <net/cipso_ipv4.h>
34#include <linux/audit.h> 34#include <linux/audit.h>
35#include <linux/magic.h> 35#include <linux/magic.h>
36#include <linux/dcache.h>
36#include "smack.h" 37#include "smack.h"
37 38
38#define task_security(task) (task_cred_xxx((task), security)) 39#define task_security(task) (task_cred_xxx((task), security))
@@ -84,6 +85,56 @@ struct inode_smack *new_inode_smack(char *smack)
84 return isp; 85 return isp;
85} 86}
86 87
88/**
89 * new_task_smack - allocate a task security blob
90 * @smack: a pointer to the Smack label to use in the blob
91 *
92 * Returns the new blob or NULL if there's no memory available
93 */
94static struct task_smack *new_task_smack(char *task, char *forked, gfp_t gfp)
95{
96 struct task_smack *tsp;
97
98 tsp = kzalloc(sizeof(struct task_smack), gfp);
99 if (tsp == NULL)
100 return NULL;
101
102 tsp->smk_task = task;
103 tsp->smk_forked = forked;
104 INIT_LIST_HEAD(&tsp->smk_rules);
105 mutex_init(&tsp->smk_rules_lock);
106
107 return tsp;
108}
109
110/**
111 * smk_copy_rules - copy a rule set
112 * @nhead - new rules header pointer
113 * @ohead - old rules header pointer
114 *
115 * Returns 0 on success, -ENOMEM on error
116 */
117static int smk_copy_rules(struct list_head *nhead, struct list_head *ohead,
118 gfp_t gfp)
119{
120 struct smack_rule *nrp;
121 struct smack_rule *orp;
122 int rc = 0;
123
124 INIT_LIST_HEAD(nhead);
125
126 list_for_each_entry_rcu(orp, ohead, list) {
127 nrp = kzalloc(sizeof(struct smack_rule), gfp);
128 if (nrp == NULL) {
129 rc = -ENOMEM;
130 break;
131 }
132 *nrp = *orp;
133 list_add_rcu(&nrp->list, nhead);
134 }
135 return rc;
136}
137
87/* 138/*
88 * LSM hooks. 139 * LSM hooks.
89 * We he, that is fun! 140 * We he, that is fun!
@@ -102,23 +153,17 @@ static int smack_ptrace_access_check(struct task_struct *ctp, unsigned int mode)
102{ 153{
103 int rc; 154 int rc;
104 struct smk_audit_info ad; 155 struct smk_audit_info ad;
105 char *sp, *tsp; 156 char *tsp;
106 157
107 rc = cap_ptrace_access_check(ctp, mode); 158 rc = cap_ptrace_access_check(ctp, mode);
108 if (rc != 0) 159 if (rc != 0)
109 return rc; 160 return rc;
110 161
111 sp = smk_of_current();
112 tsp = smk_of_task(task_security(ctp)); 162 tsp = smk_of_task(task_security(ctp));
113 smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK); 163 smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK);
114 smk_ad_setfield_u_tsk(&ad, ctp); 164 smk_ad_setfield_u_tsk(&ad, ctp);
115 165
116 /* we won't log here, because rc can be overriden */ 166 rc = smk_curacc(tsp, MAY_READWRITE, &ad);
117 rc = smk_access(sp, tsp, MAY_READWRITE, NULL);
118 if (rc != 0 && capable(CAP_MAC_OVERRIDE))
119 rc = 0;
120
121 smack_log(sp, tsp, MAY_READWRITE, rc, &ad);
122 return rc; 167 return rc;
123} 168}
124 169
@@ -134,23 +179,17 @@ static int smack_ptrace_traceme(struct task_struct *ptp)
134{ 179{
135 int rc; 180 int rc;
136 struct smk_audit_info ad; 181 struct smk_audit_info ad;
137 char *sp, *tsp; 182 char *tsp;
138 183
139 rc = cap_ptrace_traceme(ptp); 184 rc = cap_ptrace_traceme(ptp);
140 if (rc != 0) 185 if (rc != 0)
141 return rc; 186 return rc;
142 187
188 tsp = smk_of_task(task_security(ptp));
143 smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK); 189 smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK);
144 smk_ad_setfield_u_tsk(&ad, ptp); 190 smk_ad_setfield_u_tsk(&ad, ptp);
145 191
146 sp = smk_of_current(); 192 rc = smk_curacc(tsp, MAY_READWRITE, &ad);
147 tsp = smk_of_task(task_security(ptp));
148 /* we won't log here, because rc can be overriden */
149 rc = smk_access(tsp, sp, MAY_READWRITE, NULL);
150 if (rc != 0 && has_capability(ptp, CAP_MAC_OVERRIDE))
151 rc = 0;
152
153 smack_log(tsp, sp, MAY_READWRITE, rc, &ad);
154 return rc; 193 return rc;
155} 194}
156 195
@@ -463,6 +502,7 @@ static void smack_inode_free_security(struct inode *inode)
463 * smack_inode_init_security - copy out the smack from an inode 502 * smack_inode_init_security - copy out the smack from an inode
464 * @inode: the inode 503 * @inode: the inode
465 * @dir: unused 504 * @dir: unused
505 * @qstr: unused
466 * @name: where to put the attribute name 506 * @name: where to put the attribute name
467 * @value: where to put the attribute value 507 * @value: where to put the attribute value
468 * @len: where to put the length of the attribute 508 * @len: where to put the length of the attribute
@@ -470,11 +510,12 @@ static void smack_inode_free_security(struct inode *inode)
470 * Returns 0 if it all works out, -ENOMEM if there's no memory 510 * Returns 0 if it all works out, -ENOMEM if there's no memory
471 */ 511 */
472static int smack_inode_init_security(struct inode *inode, struct inode *dir, 512static int smack_inode_init_security(struct inode *inode, struct inode *dir,
473 char **name, void **value, size_t *len) 513 const struct qstr *qstr, char **name,
514 void **value, size_t *len)
474{ 515{
475 char *isp = smk_of_inode(inode); 516 char *isp = smk_of_inode(inode);
476 char *dsp = smk_of_inode(dir); 517 char *dsp = smk_of_inode(dir);
477 u32 may; 518 int may;
478 519
479 if (name) { 520 if (name) {
480 *name = kstrdup(XATTR_SMACK_SUFFIX, GFP_KERNEL); 521 *name = kstrdup(XATTR_SMACK_SUFFIX, GFP_KERNEL);
@@ -483,14 +524,17 @@ static int smack_inode_init_security(struct inode *inode, struct inode *dir,
483 } 524 }
484 525
485 if (value) { 526 if (value) {
486 may = smk_access_entry(smk_of_current(), dsp); 527 rcu_read_lock();
528 may = smk_access_entry(smk_of_current(), dsp, &smack_rule_list);
529 rcu_read_unlock();
487 530
488 /* 531 /*
489 * If the access rule allows transmutation and 532 * If the access rule allows transmutation and
490 * the directory requests transmutation then 533 * the directory requests transmutation then
491 * by all means transmute. 534 * by all means transmute.
492 */ 535 */
493 if (((may & MAY_TRANSMUTE) != 0) && smk_inode_transmutable(dir)) 536 if (may > 0 && ((may & MAY_TRANSMUTE) != 0) &&
537 smk_inode_transmutable(dir))
494 isp = dsp; 538 isp = dsp;
495 539
496 *value = kstrdup(isp, GFP_KERNEL); 540 *value = kstrdup(isp, GFP_KERNEL);
@@ -716,7 +760,8 @@ static int smack_inode_setxattr(struct dentry *dentry, const char *name,
716 if (strcmp(name, XATTR_NAME_SMACK) == 0 || 760 if (strcmp(name, XATTR_NAME_SMACK) == 0 ||
717 strcmp(name, XATTR_NAME_SMACKIPIN) == 0 || 761 strcmp(name, XATTR_NAME_SMACKIPIN) == 0 ||
718 strcmp(name, XATTR_NAME_SMACKIPOUT) == 0 || 762 strcmp(name, XATTR_NAME_SMACKIPOUT) == 0 ||
719 strcmp(name, XATTR_NAME_SMACKEXEC) == 0) { 763 strcmp(name, XATTR_NAME_SMACKEXEC) == 0 ||
764 strcmp(name, XATTR_NAME_SMACKMMAP) == 0) {
720 if (!capable(CAP_MAC_ADMIN)) 765 if (!capable(CAP_MAC_ADMIN))
721 rc = -EPERM; 766 rc = -EPERM;
722 /* 767 /*
@@ -773,6 +818,12 @@ static void smack_inode_post_setxattr(struct dentry *dentry, const char *name,
773 isp->smk_task = nsp; 818 isp->smk_task = nsp;
774 else 819 else
775 isp->smk_task = smack_known_invalid.smk_known; 820 isp->smk_task = smack_known_invalid.smk_known;
821 } else if (strcmp(name, XATTR_NAME_SMACKMMAP) == 0) {
822 nsp = smk_import(value, size);
823 if (nsp != NULL)
824 isp->smk_mmap = nsp;
825 else
826 isp->smk_mmap = smack_known_invalid.smk_known;
776 } else if (strcmp(name, XATTR_NAME_SMACKTRANSMUTE) == 0) 827 } else if (strcmp(name, XATTR_NAME_SMACKTRANSMUTE) == 0)
777 isp->smk_flags |= SMK_INODE_TRANSMUTE; 828 isp->smk_flags |= SMK_INODE_TRANSMUTE;
778 829
@@ -815,7 +866,8 @@ static int smack_inode_removexattr(struct dentry *dentry, const char *name)
815 strcmp(name, XATTR_NAME_SMACKIPIN) == 0 || 866 strcmp(name, XATTR_NAME_SMACKIPIN) == 0 ||
816 strcmp(name, XATTR_NAME_SMACKIPOUT) == 0 || 867 strcmp(name, XATTR_NAME_SMACKIPOUT) == 0 ||
817 strcmp(name, XATTR_NAME_SMACKEXEC) == 0 || 868 strcmp(name, XATTR_NAME_SMACKEXEC) == 0 ||
818 strcmp(name, XATTR_NAME_SMACKTRANSMUTE) == 0) { 869 strcmp(name, XATTR_NAME_SMACKTRANSMUTE) == 0 ||
870 strcmp(name, XATTR_NAME_SMACKMMAP)) {
819 if (!capable(CAP_MAC_ADMIN)) 871 if (!capable(CAP_MAC_ADMIN))
820 rc = -EPERM; 872 rc = -EPERM;
821 } else 873 } else
@@ -829,6 +881,7 @@ static int smack_inode_removexattr(struct dentry *dentry, const char *name)
829 if (rc == 0) { 881 if (rc == 0) {
830 isp = dentry->d_inode->i_security; 882 isp = dentry->d_inode->i_security;
831 isp->smk_task = NULL; 883 isp->smk_task = NULL;
884 isp->smk_mmap = NULL;
832 } 885 }
833 886
834 return rc; 887 return rc;
@@ -1060,6 +1113,126 @@ static int smack_file_fcntl(struct file *file, unsigned int cmd,
1060} 1113}
1061 1114
1062/** 1115/**
1116 * smack_file_mmap :
1117 * Check permissions for a mmap operation. The @file may be NULL, e.g.
1118 * if mapping anonymous memory.
1119 * @file contains the file structure for file to map (may be NULL).
1120 * @reqprot contains the protection requested by the application.
1121 * @prot contains the protection that will be applied by the kernel.
1122 * @flags contains the operational flags.
1123 * Return 0 if permission is granted.
1124 */
1125static int smack_file_mmap(struct file *file,
1126 unsigned long reqprot, unsigned long prot,
1127 unsigned long flags, unsigned long addr,
1128 unsigned long addr_only)
1129{
1130 struct smack_rule *srp;
1131 struct task_smack *tsp;
1132 char *sp;
1133 char *msmack;
1134 char *osmack;
1135 struct inode_smack *isp;
1136 struct dentry *dp;
1137 int may;
1138 int mmay;
1139 int tmay;
1140 int rc;
1141
1142 /* do DAC check on address space usage */
1143 rc = cap_file_mmap(file, reqprot, prot, flags, addr, addr_only);
1144 if (rc || addr_only)
1145 return rc;
1146
1147 if (file == NULL || file->f_dentry == NULL)
1148 return 0;
1149
1150 dp = file->f_dentry;
1151
1152 if (dp->d_inode == NULL)
1153 return 0;
1154
1155 isp = dp->d_inode->i_security;
1156 if (isp->smk_mmap == NULL)
1157 return 0;
1158 msmack = isp->smk_mmap;
1159
1160 tsp = current_security();
1161 sp = smk_of_current();
1162 rc = 0;
1163
1164 rcu_read_lock();
1165 /*
1166 * For each Smack rule associated with the subject
1167 * label verify that the SMACK64MMAP also has access
1168 * to that rule's object label.
1169 *
1170 * Because neither of the labels comes
1171 * from the networking code it is sufficient
1172 * to compare pointers.
1173 */
1174 list_for_each_entry_rcu(srp, &smack_rule_list, list) {
1175 if (srp->smk_subject != sp)
1176 continue;
1177
1178 osmack = srp->smk_object;
1179 /*
1180 * Matching labels always allows access.
1181 */
1182 if (msmack == osmack)
1183 continue;
1184 /*
1185 * If there is a matching local rule take
1186 * that into account as well.
1187 */
1188 may = smk_access_entry(srp->smk_subject, osmack,
1189 &tsp->smk_rules);
1190 if (may == -ENOENT)
1191 may = srp->smk_access;
1192 else
1193 may &= srp->smk_access;
1194 /*
1195 * If may is zero the SMACK64MMAP subject can't
1196 * possibly have less access.
1197 */
1198 if (may == 0)
1199 continue;
1200
1201 /*
1202 * Fetch the global list entry.
1203 * If there isn't one a SMACK64MMAP subject
1204 * can't have as much access as current.
1205 */
1206 mmay = smk_access_entry(msmack, osmack, &smack_rule_list);
1207 if (mmay == -ENOENT) {
1208 rc = -EACCES;
1209 break;
1210 }
1211 /*
1212 * If there is a local entry it modifies the
1213 * potential access, too.
1214 */
1215 tmay = smk_access_entry(msmack, osmack, &tsp->smk_rules);
1216 if (tmay != -ENOENT)
1217 mmay &= tmay;
1218
1219 /*
1220 * If there is any access available to current that is
1221 * not available to a SMACK64MMAP subject
1222 * deny access.
1223 */
1224 if ((may | mmay) != mmay) {
1225 rc = -EACCES;
1226 break;
1227 }
1228 }
1229
1230 rcu_read_unlock();
1231
1232 return rc;
1233}
1234
1235/**
1063 * smack_file_set_fowner - set the file security blob value 1236 * smack_file_set_fowner - set the file security blob value
1064 * @file: object in question 1237 * @file: object in question
1065 * 1238 *
@@ -1095,6 +1268,7 @@ static int smack_file_send_sigiotask(struct task_struct *tsk,
1095 * struct fown_struct is never outside the context of a struct file 1268 * struct fown_struct is never outside the context of a struct file
1096 */ 1269 */
1097 file = container_of(fown, struct file, f_owner); 1270 file = container_of(fown, struct file, f_owner);
1271
1098 /* we don't log here as rc can be overriden */ 1272 /* we don't log here as rc can be overriden */
1099 rc = smk_access(file->f_security, tsp, MAY_WRITE, NULL); 1273 rc = smk_access(file->f_security, tsp, MAY_WRITE, NULL);
1100 if (rc != 0 && has_capability(tsk, CAP_MAC_OVERRIDE)) 1274 if (rc != 0 && has_capability(tsk, CAP_MAC_OVERRIDE))
@@ -1145,9 +1319,14 @@ static int smack_file_receive(struct file *file)
1145 */ 1319 */
1146static int smack_cred_alloc_blank(struct cred *cred, gfp_t gfp) 1320static int smack_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1147{ 1321{
1148 cred->security = kzalloc(sizeof(struct task_smack), gfp); 1322 struct task_smack *tsp;
1149 if (cred->security == NULL) 1323
1324 tsp = new_task_smack(NULL, NULL, gfp);
1325 if (tsp == NULL)
1150 return -ENOMEM; 1326 return -ENOMEM;
1327
1328 cred->security = tsp;
1329
1151 return 0; 1330 return 0;
1152} 1331}
1153 1332
@@ -1156,13 +1335,24 @@ static int smack_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1156 * smack_cred_free - "free" task-level security credentials 1335 * smack_cred_free - "free" task-level security credentials
1157 * @cred: the credentials in question 1336 * @cred: the credentials in question
1158 * 1337 *
1159 * Smack isn't using copies of blobs. Everyone
1160 * points to an immutable list. The blobs never go away.
1161 * There is no leak here.
1162 */ 1338 */
1163static void smack_cred_free(struct cred *cred) 1339static void smack_cred_free(struct cred *cred)
1164{ 1340{
1165 kfree(cred->security); 1341 struct task_smack *tsp = cred->security;
1342 struct smack_rule *rp;
1343 struct list_head *l;
1344 struct list_head *n;
1345
1346 if (tsp == NULL)
1347 return;
1348 cred->security = NULL;
1349
1350 list_for_each_safe(l, n, &tsp->smk_rules) {
1351 rp = list_entry(l, struct smack_rule, list);
1352 list_del(&rp->list);
1353 kfree(rp);
1354 }
1355 kfree(tsp);
1166} 1356}
1167 1357
1168/** 1358/**
@@ -1178,13 +1368,16 @@ static int smack_cred_prepare(struct cred *new, const struct cred *old,
1178{ 1368{
1179 struct task_smack *old_tsp = old->security; 1369 struct task_smack *old_tsp = old->security;
1180 struct task_smack *new_tsp; 1370 struct task_smack *new_tsp;
1371 int rc;
1181 1372
1182 new_tsp = kzalloc(sizeof(struct task_smack), gfp); 1373 new_tsp = new_task_smack(old_tsp->smk_task, old_tsp->smk_task, gfp);
1183 if (new_tsp == NULL) 1374 if (new_tsp == NULL)
1184 return -ENOMEM; 1375 return -ENOMEM;
1185 1376
1186 new_tsp->smk_task = old_tsp->smk_task; 1377 rc = smk_copy_rules(&new_tsp->smk_rules, &old_tsp->smk_rules, gfp);
1187 new_tsp->smk_forked = old_tsp->smk_task; 1378 if (rc != 0)
1379 return rc;
1380
1188 new->security = new_tsp; 1381 new->security = new_tsp;
1189 return 0; 1382 return 0;
1190} 1383}
@@ -1203,6 +1396,11 @@ static void smack_cred_transfer(struct cred *new, const struct cred *old)
1203 1396
1204 new_tsp->smk_task = old_tsp->smk_task; 1397 new_tsp->smk_task = old_tsp->smk_task;
1205 new_tsp->smk_forked = old_tsp->smk_task; 1398 new_tsp->smk_forked = old_tsp->smk_task;
1399 mutex_init(&new_tsp->smk_rules_lock);
1400 INIT_LIST_HEAD(&new_tsp->smk_rules);
1401
1402
1403 /* cbs copy rule list */
1206} 1404}
1207 1405
1208/** 1406/**
@@ -2419,6 +2617,7 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode)
2419 } 2617 }
2420 } 2618 }
2421 isp->smk_task = smk_fetch(XATTR_NAME_SMACKEXEC, inode, dp); 2619 isp->smk_task = smk_fetch(XATTR_NAME_SMACKEXEC, inode, dp);
2620 isp->smk_mmap = smk_fetch(XATTR_NAME_SMACKMMAP, inode, dp);
2422 2621
2423 dput(dp); 2622 dput(dp);
2424 break; 2623 break;
@@ -2478,6 +2677,7 @@ static int smack_getprocattr(struct task_struct *p, char *name, char **value)
2478static int smack_setprocattr(struct task_struct *p, char *name, 2677static int smack_setprocattr(struct task_struct *p, char *name,
2479 void *value, size_t size) 2678 void *value, size_t size)
2480{ 2679{
2680 int rc;
2481 struct task_smack *tsp; 2681 struct task_smack *tsp;
2482 struct task_smack *oldtsp; 2682 struct task_smack *oldtsp;
2483 struct cred *new; 2683 struct cred *new;
@@ -2513,13 +2713,16 @@ static int smack_setprocattr(struct task_struct *p, char *name,
2513 new = prepare_creds(); 2713 new = prepare_creds();
2514 if (new == NULL) 2714 if (new == NULL)
2515 return -ENOMEM; 2715 return -ENOMEM;
2516 tsp = kzalloc(sizeof(struct task_smack), GFP_KERNEL); 2716
2717 tsp = new_task_smack(newsmack, oldtsp->smk_forked, GFP_KERNEL);
2517 if (tsp == NULL) { 2718 if (tsp == NULL) {
2518 kfree(new); 2719 kfree(new);
2519 return -ENOMEM; 2720 return -ENOMEM;
2520 } 2721 }
2521 tsp->smk_task = newsmack; 2722 rc = smk_copy_rules(&tsp->smk_rules, &oldtsp->smk_rules, GFP_KERNEL);
2522 tsp->smk_forked = oldtsp->smk_forked; 2723 if (rc != 0)
2724 return rc;
2725
2523 new->security = tsp; 2726 new->security = tsp;
2524 commit_creds(new); 2727 commit_creds(new);
2525 return size; 2728 return size;
@@ -3221,6 +3424,7 @@ struct security_operations smack_ops = {
3221 .file_ioctl = smack_file_ioctl, 3424 .file_ioctl = smack_file_ioctl,
3222 .file_lock = smack_file_lock, 3425 .file_lock = smack_file_lock,
3223 .file_fcntl = smack_file_fcntl, 3426 .file_fcntl = smack_file_fcntl,
3427 .file_mmap = smack_file_mmap,
3224 .file_set_fowner = smack_file_set_fowner, 3428 .file_set_fowner = smack_file_set_fowner,
3225 .file_send_sigiotask = smack_file_send_sigiotask, 3429 .file_send_sigiotask = smack_file_send_sigiotask,
3226 .file_receive = smack_file_receive, 3430 .file_receive = smack_file_receive,
@@ -3334,23 +3538,20 @@ static __init int smack_init(void)
3334 struct cred *cred; 3538 struct cred *cred;
3335 struct task_smack *tsp; 3539 struct task_smack *tsp;
3336 3540
3337 tsp = kzalloc(sizeof(struct task_smack), GFP_KERNEL); 3541 if (!security_module_enable(&smack_ops))
3542 return 0;
3543
3544 tsp = new_task_smack(smack_known_floor.smk_known,
3545 smack_known_floor.smk_known, GFP_KERNEL);
3338 if (tsp == NULL) 3546 if (tsp == NULL)
3339 return -ENOMEM; 3547 return -ENOMEM;
3340 3548
3341 if (!security_module_enable(&smack_ops)) {
3342 kfree(tsp);
3343 return 0;
3344 }
3345
3346 printk(KERN_INFO "Smack: Initializing.\n"); 3549 printk(KERN_INFO "Smack: Initializing.\n");
3347 3550
3348 /* 3551 /*
3349 * Set the security state for the initial task. 3552 * Set the security state for the initial task.
3350 */ 3553 */
3351 cred = (struct cred *) current->cred; 3554 cred = (struct cred *) current->cred;
3352 tsp->smk_forked = smack_known_floor.smk_known;
3353 tsp->smk_task = smack_known_floor.smk_known;
3354 cred->security = tsp; 3555 cred->security = tsp;
3355 3556
3356 /* initialize the smack_know_list */ 3557 /* initialize the smack_know_list */
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c
index 362d5eda948b..90d1bbaaa6f3 100644
--- a/security/smack/smackfs.c
+++ b/security/smack/smackfs.c
@@ -43,6 +43,7 @@ enum smk_inos {
43 SMK_NETLBLADDR = 8, /* single label hosts */ 43 SMK_NETLBLADDR = 8, /* single label hosts */
44 SMK_ONLYCAP = 9, /* the only "capable" label */ 44 SMK_ONLYCAP = 9, /* the only "capable" label */
45 SMK_LOGGING = 10, /* logging */ 45 SMK_LOGGING = 10, /* logging */
46 SMK_LOAD_SELF = 11, /* task specific rules */
46}; 47};
47 48
48/* 49/*
@@ -135,104 +136,30 @@ static void smk_netlabel_audit_set(struct netlbl_audit *nap)
135#define SMK_NETLBLADDRMIN 9 136#define SMK_NETLBLADDRMIN 9
136#define SMK_NETLBLADDRMAX 42 137#define SMK_NETLBLADDRMAX 42
137 138
138/*
139 * Seq_file read operations for /smack/load
140 */
141
142static void *load_seq_start(struct seq_file *s, loff_t *pos)
143{
144 if (*pos == SEQ_READ_FINISHED)
145 return NULL;
146 if (list_empty(&smack_rule_list))
147 return NULL;
148 return smack_rule_list.next;
149}
150
151static void *load_seq_next(struct seq_file *s, void *v, loff_t *pos)
152{
153 struct list_head *list = v;
154
155 if (list_is_last(list, &smack_rule_list)) {
156 *pos = SEQ_READ_FINISHED;
157 return NULL;
158 }
159 return list->next;
160}
161
162static int load_seq_show(struct seq_file *s, void *v)
163{
164 struct list_head *list = v;
165 struct smack_rule *srp =
166 list_entry(list, struct smack_rule, list);
167
168 seq_printf(s, "%s %s", (char *)srp->smk_subject,
169 (char *)srp->smk_object);
170
171 seq_putc(s, ' ');
172
173 if (srp->smk_access & MAY_READ)
174 seq_putc(s, 'r');
175 if (srp->smk_access & MAY_WRITE)
176 seq_putc(s, 'w');
177 if (srp->smk_access & MAY_EXEC)
178 seq_putc(s, 'x');
179 if (srp->smk_access & MAY_APPEND)
180 seq_putc(s, 'a');
181 if (srp->smk_access & MAY_TRANSMUTE)
182 seq_putc(s, 't');
183 if (srp->smk_access == 0)
184 seq_putc(s, '-');
185
186 seq_putc(s, '\n');
187
188 return 0;
189}
190
191static void load_seq_stop(struct seq_file *s, void *v)
192{
193 /* No-op */
194}
195
196static const struct seq_operations load_seq_ops = {
197 .start = load_seq_start,
198 .next = load_seq_next,
199 .show = load_seq_show,
200 .stop = load_seq_stop,
201};
202
203/**
204 * smk_open_load - open() for /smack/load
205 * @inode: inode structure representing file
206 * @file: "load" file pointer
207 *
208 * For reading, use load_seq_* seq_file reading operations.
209 */
210static int smk_open_load(struct inode *inode, struct file *file)
211{
212 return seq_open(file, &load_seq_ops);
213}
214
215/** 139/**
216 * smk_set_access - add a rule to the rule list 140 * smk_set_access - add a rule to the rule list
217 * @srp: the new rule to add 141 * @srp: the new rule to add
142 * @rule_list: the list of rules
143 * @rule_lock: the rule list lock
218 * 144 *
219 * Looks through the current subject/object/access list for 145 * Looks through the current subject/object/access list for
220 * the subject/object pair and replaces the access that was 146 * the subject/object pair and replaces the access that was
221 * there. If the pair isn't found add it with the specified 147 * there. If the pair isn't found add it with the specified
222 * access. 148 * access.
223 * 149 *
150 * Returns 1 if a rule was found to exist already, 0 if it is new
224 * Returns 0 if nothing goes wrong or -ENOMEM if it fails 151 * Returns 0 if nothing goes wrong or -ENOMEM if it fails
225 * during the allocation of the new pair to add. 152 * during the allocation of the new pair to add.
226 */ 153 */
227static int smk_set_access(struct smack_rule *srp) 154static int smk_set_access(struct smack_rule *srp, struct list_head *rule_list,
155 struct mutex *rule_lock)
228{ 156{
229 struct smack_rule *sp; 157 struct smack_rule *sp;
230 int ret = 0; 158 int found = 0;
231 int found;
232 mutex_lock(&smack_list_lock);
233 159
234 found = 0; 160 mutex_lock(rule_lock);
235 list_for_each_entry_rcu(sp, &smack_rule_list, list) { 161
162 list_for_each_entry_rcu(sp, rule_list, list) {
236 if (sp->smk_subject == srp->smk_subject && 163 if (sp->smk_subject == srp->smk_subject &&
237 sp->smk_object == srp->smk_object) { 164 sp->smk_object == srp->smk_object) {
238 found = 1; 165 found = 1;
@@ -241,19 +168,21 @@ static int smk_set_access(struct smack_rule *srp)
241 } 168 }
242 } 169 }
243 if (found == 0) 170 if (found == 0)
244 list_add_rcu(&srp->list, &smack_rule_list); 171 list_add_rcu(&srp->list, rule_list);
245 172
246 mutex_unlock(&smack_list_lock); 173 mutex_unlock(rule_lock);
247 174
248 return ret; 175 return found;
249} 176}
250 177
251/** 178/**
252 * smk_write_load - write() for /smack/load 179 * smk_write_load_list - write() for any /smack/load
253 * @file: file pointer, not actually used 180 * @file: file pointer, not actually used
254 * @buf: where to get the data from 181 * @buf: where to get the data from
255 * @count: bytes sent 182 * @count: bytes sent
256 * @ppos: where to start - must be 0 183 * @ppos: where to start - must be 0
184 * @rule_list: the list of rules to write to
185 * @rule_lock: lock for the rule list
257 * 186 *
258 * Get one smack access rule from above. 187 * Get one smack access rule from above.
259 * The format is exactly: 188 * The format is exactly:
@@ -263,21 +192,19 @@ static int smk_set_access(struct smack_rule *srp)
263 * 192 *
264 * writes must be SMK_LABELLEN+SMK_LABELLEN+SMK_ACCESSLEN bytes. 193 * writes must be SMK_LABELLEN+SMK_LABELLEN+SMK_ACCESSLEN bytes.
265 */ 194 */
266static ssize_t smk_write_load(struct file *file, const char __user *buf, 195static ssize_t smk_write_load_list(struct file *file, const char __user *buf,
267 size_t count, loff_t *ppos) 196 size_t count, loff_t *ppos,
197 struct list_head *rule_list,
198 struct mutex *rule_lock)
268{ 199{
269 struct smack_rule *rule; 200 struct smack_rule *rule;
270 char *data; 201 char *data;
271 int rc = -EINVAL; 202 int rc = -EINVAL;
272 203
273 /* 204 /*
274 * Must have privilege.
275 * No partial writes. 205 * No partial writes.
276 * Enough data must be present. 206 * Enough data must be present.
277 */ 207 */
278 if (!capable(CAP_MAC_ADMIN))
279 return -EPERM;
280
281 if (*ppos != 0) 208 if (*ppos != 0)
282 return -EINVAL; 209 return -EINVAL;
283 /* 210 /*
@@ -372,11 +299,13 @@ static ssize_t smk_write_load(struct file *file, const char __user *buf,
372 goto out_free_rule; 299 goto out_free_rule;
373 } 300 }
374 301
375 rc = smk_set_access(rule); 302 rc = count;
376 303 /*
377 if (!rc) 304 * smk_set_access returns true if there was already a rule
378 rc = count; 305 * for the subject/object pair, and false if it was new.
379 goto out; 306 */
307 if (!smk_set_access(rule, rule_list, rule_lock))
308 goto out;
380 309
381out_free_rule: 310out_free_rule:
382 kfree(rule); 311 kfree(rule);
@@ -385,6 +314,108 @@ out:
385 return rc; 314 return rc;
386} 315}
387 316
317
318/*
319 * Seq_file read operations for /smack/load
320 */
321
322static void *load_seq_start(struct seq_file *s, loff_t *pos)
323{
324 if (*pos == SEQ_READ_FINISHED)
325 return NULL;
326 if (list_empty(&smack_rule_list))
327 return NULL;
328 return smack_rule_list.next;
329}
330
331static void *load_seq_next(struct seq_file *s, void *v, loff_t *pos)
332{
333 struct list_head *list = v;
334
335 if (list_is_last(list, &smack_rule_list)) {
336 *pos = SEQ_READ_FINISHED;
337 return NULL;
338 }
339 return list->next;
340}
341
342static int load_seq_show(struct seq_file *s, void *v)
343{
344 struct list_head *list = v;
345 struct smack_rule *srp =
346 list_entry(list, struct smack_rule, list);
347
348 seq_printf(s, "%s %s", (char *)srp->smk_subject,
349 (char *)srp->smk_object);
350
351 seq_putc(s, ' ');
352
353 if (srp->smk_access & MAY_READ)
354 seq_putc(s, 'r');
355 if (srp->smk_access & MAY_WRITE)
356 seq_putc(s, 'w');
357 if (srp->smk_access & MAY_EXEC)
358 seq_putc(s, 'x');
359 if (srp->smk_access & MAY_APPEND)
360 seq_putc(s, 'a');
361 if (srp->smk_access & MAY_TRANSMUTE)
362 seq_putc(s, 't');
363 if (srp->smk_access == 0)
364 seq_putc(s, '-');
365
366 seq_putc(s, '\n');
367
368 return 0;
369}
370
371static void load_seq_stop(struct seq_file *s, void *v)
372{
373 /* No-op */
374}
375
376static const struct seq_operations load_seq_ops = {
377 .start = load_seq_start,
378 .next = load_seq_next,
379 .show = load_seq_show,
380 .stop = load_seq_stop,
381};
382
383/**
384 * smk_open_load - open() for /smack/load
385 * @inode: inode structure representing file
386 * @file: "load" file pointer
387 *
388 * For reading, use load_seq_* seq_file reading operations.
389 */
390static int smk_open_load(struct inode *inode, struct file *file)
391{
392 return seq_open(file, &load_seq_ops);
393}
394
395/**
396 * smk_write_load - write() for /smack/load
397 * @file: file pointer, not actually used
398 * @buf: where to get the data from
399 * @count: bytes sent
400 * @ppos: where to start - must be 0
401 *
402 */
403static ssize_t smk_write_load(struct file *file, const char __user *buf,
404 size_t count, loff_t *ppos)
405{
406
407 /*
408 * Must have privilege.
409 * No partial writes.
410 * Enough data must be present.
411 */
412 if (!capable(CAP_MAC_ADMIN))
413 return -EPERM;
414
415 return smk_write_load_list(file, buf, count, ppos, &smack_rule_list,
416 &smack_list_lock);
417}
418
388static const struct file_operations smk_load_ops = { 419static const struct file_operations smk_load_ops = {
389 .open = smk_open_load, 420 .open = smk_open_load,
390 .read = seq_read, 421 .read = seq_read,
@@ -1288,6 +1319,112 @@ static const struct file_operations smk_logging_ops = {
1288 .write = smk_write_logging, 1319 .write = smk_write_logging,
1289 .llseek = default_llseek, 1320 .llseek = default_llseek,
1290}; 1321};
1322
1323/*
1324 * Seq_file read operations for /smack/load-self
1325 */
1326
1327static void *load_self_seq_start(struct seq_file *s, loff_t *pos)
1328{
1329 struct task_smack *tsp = current_security();
1330
1331 if (*pos == SEQ_READ_FINISHED)
1332 return NULL;
1333 if (list_empty(&tsp->smk_rules))
1334 return NULL;
1335 return tsp->smk_rules.next;
1336}
1337
1338static void *load_self_seq_next(struct seq_file *s, void *v, loff_t *pos)
1339{
1340 struct task_smack *tsp = current_security();
1341 struct list_head *list = v;
1342
1343 if (list_is_last(list, &tsp->smk_rules)) {
1344 *pos = SEQ_READ_FINISHED;
1345 return NULL;
1346 }
1347 return list->next;
1348}
1349
1350static int load_self_seq_show(struct seq_file *s, void *v)
1351{
1352 struct list_head *list = v;
1353 struct smack_rule *srp =
1354 list_entry(list, struct smack_rule, list);
1355
1356 seq_printf(s, "%s %s", (char *)srp->smk_subject,
1357 (char *)srp->smk_object);
1358
1359 seq_putc(s, ' ');
1360
1361 if (srp->smk_access & MAY_READ)
1362 seq_putc(s, 'r');
1363 if (srp->smk_access & MAY_WRITE)
1364 seq_putc(s, 'w');
1365 if (srp->smk_access & MAY_EXEC)
1366 seq_putc(s, 'x');
1367 if (srp->smk_access & MAY_APPEND)
1368 seq_putc(s, 'a');
1369 if (srp->smk_access & MAY_TRANSMUTE)
1370 seq_putc(s, 't');
1371 if (srp->smk_access == 0)
1372 seq_putc(s, '-');
1373
1374 seq_putc(s, '\n');
1375
1376 return 0;
1377}
1378
1379static void load_self_seq_stop(struct seq_file *s, void *v)
1380{
1381 /* No-op */
1382}
1383
1384static const struct seq_operations load_self_seq_ops = {
1385 .start = load_self_seq_start,
1386 .next = load_self_seq_next,
1387 .show = load_self_seq_show,
1388 .stop = load_self_seq_stop,
1389};
1390
1391
1392/**
1393 * smk_open_load_self - open() for /smack/load-self
1394 * @inode: inode structure representing file
1395 * @file: "load" file pointer
1396 *
1397 * For reading, use load_seq_* seq_file reading operations.
1398 */
1399static int smk_open_load_self(struct inode *inode, struct file *file)
1400{
1401 return seq_open(file, &load_self_seq_ops);
1402}
1403
1404/**
1405 * smk_write_load_self - write() for /smack/load-self
1406 * @file: file pointer, not actually used
1407 * @buf: where to get the data from
1408 * @count: bytes sent
1409 * @ppos: where to start - must be 0
1410 *
1411 */
1412static ssize_t smk_write_load_self(struct file *file, const char __user *buf,
1413 size_t count, loff_t *ppos)
1414{
1415 struct task_smack *tsp = current_security();
1416
1417 return smk_write_load_list(file, buf, count, ppos, &tsp->smk_rules,
1418 &tsp->smk_rules_lock);
1419}
1420
1421static const struct file_operations smk_load_self_ops = {
1422 .open = smk_open_load_self,
1423 .read = seq_read,
1424 .llseek = seq_lseek,
1425 .write = smk_write_load_self,
1426 .release = seq_release,
1427};
1291/** 1428/**
1292 * smk_fill_super - fill the /smackfs superblock 1429 * smk_fill_super - fill the /smackfs superblock
1293 * @sb: the empty superblock 1430 * @sb: the empty superblock
@@ -1304,23 +1441,26 @@ static int smk_fill_super(struct super_block *sb, void *data, int silent)
1304 struct inode *root_inode; 1441 struct inode *root_inode;
1305 1442
1306 static struct tree_descr smack_files[] = { 1443 static struct tree_descr smack_files[] = {
1307 [SMK_LOAD] = 1444 [SMK_LOAD] = {
1308 {"load", &smk_load_ops, S_IRUGO|S_IWUSR}, 1445 "load", &smk_load_ops, S_IRUGO|S_IWUSR},
1309 [SMK_CIPSO] = 1446 [SMK_CIPSO] = {
1310 {"cipso", &smk_cipso_ops, S_IRUGO|S_IWUSR}, 1447 "cipso", &smk_cipso_ops, S_IRUGO|S_IWUSR},
1311 [SMK_DOI] = 1448 [SMK_DOI] = {
1312 {"doi", &smk_doi_ops, S_IRUGO|S_IWUSR}, 1449 "doi", &smk_doi_ops, S_IRUGO|S_IWUSR},
1313 [SMK_DIRECT] = 1450 [SMK_DIRECT] = {
1314 {"direct", &smk_direct_ops, S_IRUGO|S_IWUSR}, 1451 "direct", &smk_direct_ops, S_IRUGO|S_IWUSR},
1315 [SMK_AMBIENT] = 1452 [SMK_AMBIENT] = {
1316 {"ambient", &smk_ambient_ops, S_IRUGO|S_IWUSR}, 1453 "ambient", &smk_ambient_ops, S_IRUGO|S_IWUSR},
1317 [SMK_NETLBLADDR] = 1454 [SMK_NETLBLADDR] = {
1318 {"netlabel", &smk_netlbladdr_ops, S_IRUGO|S_IWUSR}, 1455 "netlabel", &smk_netlbladdr_ops, S_IRUGO|S_IWUSR},
1319 [SMK_ONLYCAP] = 1456 [SMK_ONLYCAP] = {
1320 {"onlycap", &smk_onlycap_ops, S_IRUGO|S_IWUSR}, 1457 "onlycap", &smk_onlycap_ops, S_IRUGO|S_IWUSR},
1321 [SMK_LOGGING] = 1458 [SMK_LOGGING] = {
1322 {"logging", &smk_logging_ops, S_IRUGO|S_IWUSR}, 1459 "logging", &smk_logging_ops, S_IRUGO|S_IWUSR},
1323 /* last one */ {""} 1460 [SMK_LOAD_SELF] = {
1461 "load-self", &smk_load_self_ops, S_IRUGO|S_IWUGO},
1462 /* last one */
1463 {""}
1324 }; 1464 };
1325 1465
1326 rc = simple_fill_super(sb, SMACK_MAGIC, smack_files); 1466 rc = simple_fill_super(sb, SMACK_MAGIC, smack_files);
diff --git a/security/tomoyo/file.c b/security/tomoyo/file.c
index 9d32f182301e..cb09f1fce910 100644
--- a/security/tomoyo/file.c
+++ b/security/tomoyo/file.c
@@ -927,7 +927,7 @@ int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
927 struct path *path, const int flag) 927 struct path *path, const int flag)
928{ 928{
929 const u8 acc_mode = ACC_MODE(flag); 929 const u8 acc_mode = ACC_MODE(flag);
930 int error = -ENOMEM; 930 int error = 0;
931 struct tomoyo_path_info buf; 931 struct tomoyo_path_info buf;
932 struct tomoyo_request_info r; 932 struct tomoyo_request_info r;
933 int idx; 933 int idx;
@@ -938,9 +938,6 @@ int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
938 buf.name = NULL; 938 buf.name = NULL;
939 r.mode = TOMOYO_CONFIG_DISABLED; 939 r.mode = TOMOYO_CONFIG_DISABLED;
940 idx = tomoyo_read_lock(); 940 idx = tomoyo_read_lock();
941 if (!tomoyo_get_realpath(&buf, path))
942 goto out;
943 error = 0;
944 /* 941 /*
945 * If the filename is specified by "deny_rewrite" keyword, 942 * If the filename is specified by "deny_rewrite" keyword,
946 * we need to check "allow_rewrite" permission when the filename is not 943 * we need to check "allow_rewrite" permission when the filename is not