SETRUID(3)

NAME
setruid, setrgid - set user and group ID

LIBRARY
libc

SYNOPSIS
#include <unistd.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

ERRORS
The functions fail if:

[EPERM]
    The user is not the super user and the ID specified is not the real or effective ID.

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

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

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