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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-05 12:44:57 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-05 12:44:57 -0500
commit83fdbfbfe6e7e8906e3a3f8f6bc074d887e92109 (patch)
tree977e10a076d76fdb2622f089211f3d0954ba6873 /include/linux/securebits.h
parentd9b2c4d0b03c721808c0d259e43a27f1e80205bc (diff)
parentc84d6efd363a3948eb32ec40d46bab6338580454 (diff)
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (30 commits) TOMOYO: Add recursive directory matching operator support. remove CONFIG_SECURITY_FILE_CAPABILITIES compile option SELinux: print denials for buggy kernel with unknown perms Silence the existing API for capability version compatibility check. LSM: Move security_path_chmod()/security_path_chown() to after mutex_lock(). SELinux: header generation may hit infinite loop selinux: Fix warnings security: report the module name to security_module_request Config option to set a default LSM sysctl: require CAP_SYS_RAWIO to set mmap_min_addr tpm: autoload tpm_tis based on system PnP IDs tpm_tis: TPM_STS_DATA_EXPECT workaround define convenient securebits masks for prctl users (v2) tpm: fix header for modular build tomoyo: improve hash bucket dispersion tpm add default function definitions LSM: imbed ima calls in the security hooks SELinux: add .gitignore files for dynamic classes security: remove root_plug SELinux: fix locking issue introduced with c6d3aaa4e35c71a3 ...
Diffstat (limited to 'include/linux/securebits.h')
-rw-r--r--include/linux/securebits.h24
1 files changed, 18 insertions, 6 deletions
diff --git a/include/linux/securebits.h b/include/linux/securebits.h
index d2c5ed845bcc..33406174cbe8 100644
--- a/include/linux/securebits.h
+++ b/include/linux/securebits.h
@@ -1,6 +1,15 @@
1#ifndef _LINUX_SECUREBITS_H 1#ifndef _LINUX_SECUREBITS_H
2#define _LINUX_SECUREBITS_H 1 2#define _LINUX_SECUREBITS_H 1
3 3
4/* Each securesetting is implemented using two bits. One bit specifies
5 whether the setting is on or off. The other bit specify whether the
6 setting is locked or not. A setting which is locked cannot be
7 changed from user-level. */
8#define issecure_mask(X) (1 << (X))
9#ifdef __KERNEL__
10#define issecure(X) (issecure_mask(X) & current_cred_xxx(securebits))
11#endif
12
4#define SECUREBITS_DEFAULT 0x00000000 13#define SECUREBITS_DEFAULT 0x00000000
5 14
6/* When set UID 0 has no special privileges. When unset, we support 15/* When set UID 0 has no special privileges. When unset, we support
@@ -12,6 +21,9 @@
12#define SECURE_NOROOT 0 21#define SECURE_NOROOT 0
13#define SECURE_NOROOT_LOCKED 1 /* make bit-0 immutable */ 22#define SECURE_NOROOT_LOCKED 1 /* make bit-0 immutable */
14 23
24#define SECBIT_NOROOT (issecure_mask(SECURE_NOROOT))
25#define SECBIT_NOROOT_LOCKED (issecure_mask(SECURE_NOROOT_LOCKED))
26
15/* When set, setuid to/from uid 0 does not trigger capability-"fixup". 27/* When set, setuid to/from uid 0 does not trigger capability-"fixup".
16 When unset, to provide compatiblility with old programs relying on 28 When unset, to provide compatiblility with old programs relying on
17 set*uid to gain/lose privilege, transitions to/from uid 0 cause 29 set*uid to gain/lose privilege, transitions to/from uid 0 cause
@@ -19,6 +31,10 @@
19#define SECURE_NO_SETUID_FIXUP 2 31#define SECURE_NO_SETUID_FIXUP 2
20#define SECURE_NO_SETUID_FIXUP_LOCKED 3 /* make bit-2 immutable */ 32#define SECURE_NO_SETUID_FIXUP_LOCKED 3 /* make bit-2 immutable */
21 33
34#define SECBIT_NO_SETUID_FIXUP (issecure_mask(SECURE_NO_SETUID_FIXUP))
35#define SECBIT_NO_SETUID_FIXUP_LOCKED \
36 (issecure_mask(SECURE_NO_SETUID_FIXUP_LOCKED))
37
22/* When set, a process can retain its capabilities even after 38/* When set, a process can retain its capabilities even after
23 transitioning to a non-root user (the set-uid fixup suppressed by 39 transitioning to a non-root user (the set-uid fixup suppressed by
24 bit 2). Bit-4 is cleared when a process calls exec(); setting both 40 bit 2). Bit-4 is cleared when a process calls exec(); setting both
@@ -27,12 +43,8 @@
27#define SECURE_KEEP_CAPS 4 43#define SECURE_KEEP_CAPS 4
28#define SECURE_KEEP_CAPS_LOCKED 5 /* make bit-4 immutable */ 44#define SECURE_KEEP_CAPS_LOCKED 5 /* make bit-4 immutable */
29 45
30/* Each securesetting is implemented using two bits. One bit specifies 46#define SECBIT_KEEP_CAPS (issecure_mask(SECURE_KEEP_CAPS))
31 whether the setting is on or off. The other bit specify whether the 47#define SECBIT_KEEP_CAPS_LOCKED (issecure_mask(SECURE_KEEP_CAPS_LOCKED))
32 setting is locked or not. A setting which is locked cannot be
33 changed from user-level. */
34#define issecure_mask(X) (1 << (X))
35#define issecure(X) (issecure_mask(X) & current_cred_xxx(securebits))
36 48
37#define SECURE_ALL_BITS (issecure_mask(SECURE_NOROOT) | \ 49#define SECURE_ALL_BITS (issecure_mask(SECURE_NOROOT) | \
38 issecure_mask(SECURE_NO_SETUID_FIXUP) | \ 50 issecure_mask(SECURE_NO_SETUID_FIXUP) | \