SETRUID(3) BSD Programmer's Manual SETRUID(3)
setruid, setrgid - set user and group ID
#include <sys/types.h>
int
setruid(uid_t uid);
int
setrgid(gid_t gid);
This interface is made obsolete by setreuid(2). It is available from the
compatibility library, libcompat.
The setruid() function (setrgid()) sets the real user ID (group ID) of
the current process to the specified value.
Upon success, these functions return 0; otherwise -1 is returned.
If the user is not the super user, or the UID (GID) specified is not the
real or effective ID of the process, these functions return -1.
getgid(2), getuid(2), setegid(2), seteuid(2), setgid(2), setregid(2),
setresgid(2), setresuid(2), setreuid(2), setuid(2)
The setruid() and setrgid() functions appeared in 4.2BSD. Semantically
different versions appeared in 4.4BSD. The current versions, with the
original semantics restored, appeared in OpenBSD 3.3.
MirOS BSD #10-current April 19, 1991 1
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