4.3BSD-UWisc/man/cat2/setregid.2

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



NAME
     setregid - set real and effective group ID

SYNOPSIS
     setregid(rgid, egid)
     int rgid, egid;

DESCRIPTION
     The real and effective group ID's of the current process are
     set to the arguments.  Unprivileged users may change the
     real group ID to the effective group ID and vice-versa; only
     the super-user may make other changes.

     Supplying a value of -1 for either the real or effective
     group ID forces the system to substitute the current ID in
     place of the -1 parameter.

RETURN VALUE
     Upon successful completion, a value of 0 is returned.  Oth-
     erwise, a value of -1 is returned and _e_r_r_n_o is set to indi-
     cate the error.

ERRORS
     [EPERM]        The current process is not the super-user and
                    a change other than changing the effective
                    group-id to the real group-id was specified.

SEE ALSO
     getgid(2), setreuid(2), setgid(3)


























Printed 12/27/86          May 15, 1985                          1