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+<HTML>
+<HEAD>
+<TITLE>setuid(2)</TITLE>
+</HEAD>
+<BODY>
+<H1>setuid(2)</H1>
+<HR>
+<PRE>
+
+</PRE>
+<H2>NAME</H2><PRE>
+     setuid, setgid - set user or group ID's
+
+
+</PRE>
+<H2>SYNOPSIS</H2><PRE>
+     <STRONG>#include</STRONG> <STRONG>&lt;sys/types.h&gt;</STRONG>
+
+     <STRONG>int</STRONG> <STRONG>setuid(uid_t</STRONG> <EM>uid</EM><STRONG>)</STRONG>
+     <STRONG>int</STRONG> <STRONG>setgid(gid_t</STRONG> <EM>gid</EM><STRONG>)</STRONG>
+
+
+</PRE>
+<H2>DESCRIPTION</H2><PRE>
+     <STRONG>Setuid</STRONG> sets the real and effective user ID's of the  current  process  to
+     <EM>uid</EM>.   Unprivileged users may only change both user ID's to the real user
+     ID; only the super-user may make other changes.  <STRONG>Setgid</STRONG> does the same for
+     the real and effective group ID's.
+
+     Minix-vmd allows an unprivileged user to change ID's to the original real
+     or  effective  ID  as  they  were  at  the time the process was executed.
+     <STRONG>Setgid</STRONG> may also set the group ID's to any of the additional  group  ID's.
+     If one of the remembered user ID's was 0 then any user or group ID may be
+     chosen.
+
+
+</PRE>
+<H2>RETURN VALUE</H2><PRE>
+     Upon successful completion, a value of 0 is returned.  Otherwise, a value
+     of -1 is returned and <STRONG>errno</STRONG> is set to indicate the error.
+
+
+</PRE>
+<H2>ERRORS</H2><PRE>
+
+     [EPERM]        The current process is not the  super-user  and  a  change
+                    other than one of the allowed changes was attempted.
+
+
+</PRE>
+<H2>SEE ALSO</H2><PRE>
+     <STRONG><A HREF="../man2/getuid.2.html">getuid(2)</A></STRONG>, <STRONG><A HREF="../man2/getgid.2.html">getgid(2)</A></STRONG>.
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+</PRE>
+</BODY>
+</HTML>