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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-10-19 15:19:19 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-10-19 15:19:19 -0400
commite05dacd71db0a5da7c1a44bcaab2a8a240b9c233 (patch)
tree31382cf1c7d62c03126448affb2fc86e8c4aaa8b /include/linux/securebits.h
parent3ab0b83bf6a1e834f4b884150d8012990c75d25d (diff)
parentddffeb8c4d0331609ef2581d84de4d763607bd37 (diff)
Merge commit 'v3.7-rc1' into stable/for-linus-3.7
* commit 'v3.7-rc1': (10892 commits) Linux 3.7-rc1 x86, boot: Explicitly include autoconf.h for hostprogs perf: Fix UAPI fallout ARM: config: make sure that platforms are ordered by option string ARM: config: sort select statements alphanumerically UAPI: (Scripted) Disintegrate include/linux/byteorder UAPI: (Scripted) Disintegrate include/linux UAPI: Unexport linux/blk_types.h UAPI: Unexport part of linux/ppp-comp.h perf: Handle new rbtree implementation procfs: don't need a PATH_MAX allocation to hold a string representation of an int vfs: embed struct filename inside of names_cache allocation if possible audit: make audit_inode take struct filename vfs: make path_openat take a struct filename pointer vfs: turn do_path_lookup into wrapper around struct filename variant audit: allow audit code to satisfy getname requests from its names_list vfs: define struct filename and have getname() return it btrfs: Fix compilation with user namespace support enabled userns: Fix posix_acl_file_xattr_userns gid conversion userns: Properly print bluetooth socket uids ...
Diffstat (limited to 'include/linux/securebits.h')
-rw-r--r--include/linux/securebits.h51
1 files changed, 2 insertions, 49 deletions
diff --git a/include/linux/securebits.h b/include/linux/securebits.h
index 33406174cbe8..da1b33b33af7 100644
--- a/include/linux/securebits.h
+++ b/include/linux/securebits.h
@@ -1,54 +1,7 @@
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 4#include <uapi/linux/securebits.h>
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
13#define SECUREBITS_DEFAULT 0x00000000
14
15/* When set UID 0 has no special privileges. When unset, we support
16 inheritance of root-permissions and suid-root executable under
17 compatibility mode. We raise the effective and inheritable bitmasks
18 *of the executable file* if the effective uid of the new process is
19 0. If the real uid is 0, we raise the effective (legacy) bit of the
20 executable file. */
21#define SECURE_NOROOT 0
22#define SECURE_NOROOT_LOCKED 1 /* make bit-0 immutable */
23
24#define SECBIT_NOROOT (issecure_mask(SECURE_NOROOT))
25#define SECBIT_NOROOT_LOCKED (issecure_mask(SECURE_NOROOT_LOCKED))
26
27/* When set, setuid to/from uid 0 does not trigger capability-"fixup".
28 When unset, to provide compatiblility with old programs relying on
29 set*uid to gain/lose privilege, transitions to/from uid 0 cause
30 capabilities to be gained/lost. */
31#define SECURE_NO_SETUID_FIXUP 2
32#define SECURE_NO_SETUID_FIXUP_LOCKED 3 /* make bit-2 immutable */
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
38/* When set, a process can retain its capabilities even after
39 transitioning to a non-root user (the set-uid fixup suppressed by
40 bit 2). Bit-4 is cleared when a process calls exec(); setting both
41 bit 4 and 5 will create a barrier through exec that no exec()'d
42 child can use this feature again. */
43#define SECURE_KEEP_CAPS 4
44#define SECURE_KEEP_CAPS_LOCKED 5 /* make bit-4 immutable */
45
46#define SECBIT_KEEP_CAPS (issecure_mask(SECURE_KEEP_CAPS))
47#define SECBIT_KEEP_CAPS_LOCKED (issecure_mask(SECURE_KEEP_CAPS_LOCKED))
48
49#define SECURE_ALL_BITS (issecure_mask(SECURE_NOROOT) | \
50 issecure_mask(SECURE_NO_SETUID_FIXUP) | \
51 issecure_mask(SECURE_KEEP_CAPS))
52#define SECURE_ALL_LOCKS (SECURE_ALL_BITS << 1)
53 5
6#define issecure(X) (issecure_mask(X) & current_cred_xxx(securebits))
54#endif /* !_LINUX_SECUREBITS_H */ 7#endif /* !_LINUX_SECUREBITS_H */