SETRUID(3) MachTen Programmer’s Manual SETRUID(3)

NAME
setruid, setrgid - set user and group ID

SYNOPSIS
#include <sys/types.h>

int
setruid(uid_t ruid)

int
setrgid(gid_t rgid)

DESCRIPTION
The setruid() function (setrgid()) sets the real user ID (group ID) of
the current process.

RETURN VALUES
Upon success, these functions return 0; otherwise -1 is returned.

If the user is not the super user, or the uid specified is not the real
or effective ID, these functions return -1.

The use of these calls is not portable. Their use is discouraged; they
will be removed in the future.

SEE ALSO
setuid(2), setgid(2), seteuid(2), setegid(2), getuid(2), getgid(2)

HISTORY
The setruid() and setrgid() syscalls appeared in 4.2BSD and were dropped
in 4.4BSD.

4.2 Berkeley Distribution June 2, 1993 1