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