SETUID(2)           UNIX Programmer's Manual            SETUID(2)

NAME
     setuid, setgid - set user or group ID

SYNOPSIS
     setuid(uid)
     setgid(gid)

DESCRIPTION
     The real and effective user ID (group ID) of the current
     process are set to the argument.  These calls are only per-
     mitted to the super-user or if the argument is the real or
     effective ID.

ERRORS
     _S_e_t_u_i_d will fail and the user IDs will be unchanged if:

     [EPERM]             The current process's effective user ID
                         is not the super-user and a change other
                         than changing the user IDs to the real
                         or effective user ID was specified.

     Setgid will fail and the group IDs will be unchanged if:

     [EPERM]             The current process's effective user ID
                         is not the super-user and a change other
                         than changing the group IDs to the real
                         or effective group ID was specified.

SEE ALSO
     getuid(2)

ASSEMBLER
     (setuid = 23.)
     (user ID in r0)
     sys setuid

     (setgid = 46.)
     (group ID in r0)
     sys setgid

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