int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
描述getresuid() and getresgid() (both introduced in Linux 2.1.44) get the real UID, effective UID, and saved set-user-ID (resp. group ID’s) of the current process.
返回值On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
|EFAULT||One of the arguments specified an address outside the calling program’s address space.|
遵循于These calls are non-standard; they also appear on HP-UX and some of the BSDs.
The prototype is given by glibc since version 2.3.2 provided _GNU_SOURCE is defined.