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SETRUID(3)                  BSD Programmer's Manual                 SETRUID(3)

NAME
     setruid, setrgid - set user and group ID

SYNOPSIS
     #include <&lt;sys/types.h>&gt;

     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