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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2009-10-04 08:49:47 -0400
committerJames Morris <jmorris@namei.org>2009-10-11 19:56:00 -0400
commit89eda06837094ce9f34fae269b8773fcfd70f046 (patch)
treedc11701c68ebcc8346d7567cfb53b9c7327ef445 /security
parent941fc5b2bf8f7dd1d0a9c502e152fa719ff6578e (diff)
LSM: Add security_path_chmod() and security_path_chown().
This patch allows pathname based LSM modules to check chmod()/chown() operations. Since notify_change() does not receive "struct vfsmount *", we add security_path_chmod() and security_path_chown() to the caller of notify_change(). These hooks are used by TOMOYO. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security')
-rw-r--r--security/capability.c13
-rw-r--r--security/security.c15
2 files changed, 28 insertions, 0 deletions
diff --git a/security/capability.c b/security/capability.c
index fce07a7bc825..09279a8d4a14 100644
--- a/security/capability.c
+++ b/security/capability.c
@@ -308,6 +308,17 @@ static int cap_path_truncate(struct path *path, loff_t length,
308{ 308{
309 return 0; 309 return 0;
310} 310}
311
312static int cap_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
313 mode_t mode)
314{
315 return 0;
316}
317
318static int cap_path_chown(struct path *path, uid_t uid, gid_t gid)
319{
320 return 0;
321}
311#endif 322#endif
312 323
313static int cap_file_permission(struct file *file, int mask) 324static int cap_file_permission(struct file *file, int mask)
@@ -977,6 +988,8 @@ void security_fixup_ops(struct security_operations *ops)
977 set_to_cap_if_null(ops, path_link); 988 set_to_cap_if_null(ops, path_link);
978 set_to_cap_if_null(ops, path_rename); 989 set_to_cap_if_null(ops, path_rename);
979 set_to_cap_if_null(ops, path_truncate); 990 set_to_cap_if_null(ops, path_truncate);
991 set_to_cap_if_null(ops, path_chmod);
992 set_to_cap_if_null(ops, path_chown);
980#endif 993#endif
981 set_to_cap_if_null(ops, file_permission); 994 set_to_cap_if_null(ops, file_permission);
982 set_to_cap_if_null(ops, file_alloc_security); 995 set_to_cap_if_null(ops, file_alloc_security);
diff --git a/security/security.c b/security/security.c
index c4c673240c1c..5259270e558f 100644
--- a/security/security.c
+++ b/security/security.c
@@ -434,6 +434,21 @@ int security_path_truncate(struct path *path, loff_t length,
434 return 0; 434 return 0;
435 return security_ops->path_truncate(path, length, time_attrs); 435 return security_ops->path_truncate(path, length, time_attrs);
436} 436}
437
438int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
439 mode_t mode)
440{
441 if (unlikely(IS_PRIVATE(dentry->d_inode)))
442 return 0;
443 return security_ops->path_chmod(dentry, mnt, mode);
444}
445
446int security_path_chown(struct path *path, uid_t uid, gid_t gid)
447{
448 if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
449 return 0;
450 return security_ops->path_chown(path, uid, gid);
451}
437#endif 452#endif
438 453
439int security_inode_create(struct inode *dir, struct dentry *dentry, int mode) 454int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)