| #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 */ |