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<html><!-- This HTML file has been created by texi2html 1.29
from syscalls.texi on 4 June 1994 -->
<TITLE>Syscall specifications of Linux - setregid</TITLE>
<P>Go to the <A HREF="syscalls_66.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_66.html">previous</A>, <A HREF="syscalls_68.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_68.html">next</A> section.<P>
<H2><A NAME="SEC67" HREF="syscalls_toc.html#SEC67" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_toc.html#SEC67">setregid</A></H2>
<P>
<H3>SYNOPSIS</H3>
<P>
<CODE>int setregid(gid_t <VAR>rgid</VAR>, gid_t <VAR>egid</VAR>);</CODE>
<H3>PARAMETERS</H3>
<P>
<VAR>rgid</VAR>: [in] the new real gid, -1 for no change.
<P>
<VAR>egid</VAR>: [in] the new effective gid, -1 for no change.
<P>
<H3>DESCRIPTION</H3>
<P>
Sets both the real and effective gid of the task. If the calling task
does not have superuser privileges, it can only swap its real and
effective gids. If the calling task has superuser privileges, it can set
the effective and real gids to whatever it wants. The saved gid is set
to the same value of the effective gid. This is done so that a programm
using this call will be considered 100% BSD compatible.
<P>
<H3>RETURN VALUE</H3>
<P>
On success, returns 0. On error, returns -1 and <CODE>errno</CODE> is set to
one of the following values: <CODE>EPERM</CODE>: the task tried something else
than just changing the effective gid to the real gid and the real gid to
the effective gid and the task does not have superuser privileges.
<P>
<P>Go to the <A HREF="syscalls_66.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_66.html">previous</A>, <A HREF="syscalls_68.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_68.html">next</A> section.<P>