projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _LINUX_SECUREBITS_H |
| 2 | #define _LINUX_SECUREBITS_H 1 | |
| 3 | ||
| 4 | #define SECUREBITS_DEFAULT 0x00000000 | |
| 5 | ||
| 6 | extern unsigned securebits; | |
| 7 | ||
| 8 | /* When set UID 0 has no special privileges. When unset, we support | |
| 9 | inheritance of root-permissions and suid-root executable under | |
| 10 | compatibility mode. We raise the effective and inheritable bitmasks | |
| 11 | *of the executable file* if the effective uid of the new process is | |
| 12 | 0. If the real uid is 0, we raise the inheritable bitmask of the | |
| 13 | executable file. */ | |
| 14 | #define SECURE_NOROOT 0 | |
| 15 | ||
| 16 | /* When set, setuid to/from uid 0 does not trigger capability-"fixes" | |
| 17 | to be compatible with old programs relying on set*uid to loose | |
| 18 | privileges. When unset, setuid doesn't change privileges. */ | |
| 19 | #define SECURE_NO_SETUID_FIXUP 2 | |
| 20 | ||
| 21 | /* Each securesetting is implemented using two bits. One bit specify | |
| 22 | whether the setting is on or off. The other bit specify whether the | |
| 23 | setting is fixed or not. A setting which is fixed cannot be changed | |
| 24 | from user-level. */ | |
| 25 | ||
| 26 | #define issecure(X) ( (1 << (X+1)) & SECUREBITS_DEFAULT ? \ | |
| 27 | (1 << (X)) & SECUREBITS_DEFAULT : \ | |
| 28 | (1 << (X)) & securebits ) | |
| 29 | ||
| 30 | #endif /* !_LINUX_SECUREBITS_H */ |