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.\" Copyright (c) 1980 Regents of the University of California.
.\" All rights reserved.  The Berkeley software License Agreement
.\" specifies the terms and conditions for redistribution.
.\"
.\"	@(#)setreuid.2	6.1 (Berkeley) 5/9/85
.\"
.TH SETREUID 2 "May 9, 1985"
.UC 4
.SH NAME
setreuid \- set real and effective user ID's
.SH SYNOPSIS
.ft B
.nf
setreuid(ruid, euid)
int ruid, euid;
.fi
.ft R
.SH DESCRIPTION
The real and effective user ID's of the
current process are set according to the arguments.
If
.I ruid
or 
.I euid
is \-1, the current uid is filled in by the system.
Unprivileged users may change the real user
ID to the effective user ID and vice-versa; only the super-user may
make other changes.
.SH "RETURN VALUE
Upon successful completion, a value of 0 is returned.  Otherwise,
a value of \-1 is returned and \fIerrno\fP is set to indicate the error.
.SH "ERRORS
.TP 15
[EPERM]
The current process is not the super-user and a change
other than changing the effective user-id to the real user-id
was specified.
.SH "SEE ALSO"
getuid(2), setregid(2), setuid(3)

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