| #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 */ |