gno/usr.man/man2/setruid.2
1997-02-27 07:32:31 +00:00

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.\" @(#)setruid.3 8.1 (Berkeley) 6/2/93
.\"
.TH SETRUID 2 "19 January 1997" GNO "System Calls"
.SH NAME
.BR setruid ,
.BR setrgid
\- set user and group ID
.SH SYNOPSIS
.br
#include <sys/types.h>
.br
#include <unistd.h>
.sp 1
int
\fBsetruid\fR (uid_t \fIruid\fR);
.br
int
\fBsetrgid\fR (gid_t \fIrgid\fR);
.SH DESCRIPTION
The
.BR setruid
function
sets the real user ID of the current process.
.LP
The
.BR setrgid
function
sets the real group ID of the current process.
.SH RETURN VALUES
Upon success, these functions return 0;
otherwise \-1 is returned.
.LP
If the user is not the super user, or the uid
specified is not the real or effective ID, these
functions return \-1.
.LP
The use of these calls is not portable.
Their use is discouraged; they will be removed in the future.
.SH SEE ALSO
.BR setuid (2),
.BR setgid (2),
.BR seteuid (2),
.BR setegid (2),
.BR getuid (2),
.BR getgid (2)
.SH HISTORY
The
.BR setruid
and
.BR setrgid
syscalls appeared in 4.2 BSD
and were dropped in 4.4BSD.