linux-stable/include/linux/securebits.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

30 lines
1.1 KiB
C

#ifndef _LINUX_SECUREBITS_H
#define _LINUX_SECUREBITS_H 1
#define SECUREBITS_DEFAULT 0x00000000
extern unsigned securebits;
/* When set UID 0 has no special privileges. When unset, we support
inheritance of root-permissions and suid-root executable under
compatibility mode. We raise the effective and inheritable bitmasks
*of the executable file* if the effective uid of the new process is
0. If the real uid is 0, we raise the inheritable bitmask of the
executable file. */
#define SECURE_NOROOT 0
/* When set, setuid to/from uid 0 does not trigger capability-"fixes"
to be compatible with old programs relying on set*uid to loose
privileges. When unset, setuid doesn't change privileges. */
#define SECURE_NO_SETUID_FIXUP 2
/* Each securesetting is implemented using two bits. One bit specify
whether the setting is on or off. The other bit specify whether the
setting is fixed or not. A setting which is fixed cannot be changed
from user-level. */
#define issecure(X) ( (1 << (X+1)) & SECUREBITS_DEFAULT ? \
(1 << (X)) & SECUREBITS_DEFAULT : \
(1 << (X)) & securebits )
#endif /* !_LINUX_SECUREBITS_H */