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89 lines
3.2 KiB
Groff
89 lines
3.2 KiB
Groff
.\" Copyright (c) 1980, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)setpgid.2 8.1 (Berkeley) 6/4/93
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.\"
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.TH SETPGID 2 "16 January 1997" GNO "System Calls"
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.SH NAME
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.BR setpgid ,
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.BR setpgrp
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\- set process group
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.SH SYNOPSIS
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.br
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#include <unistd.h>
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.sp 1
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int
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\fBsetpgid\fR (pid_t \fIpid\fR, pid_t \fIpgrp\fR);
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.br
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int
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\fBsetpgrp\fR (pid_t \fIpid\fR, pid_t \fIpgrp\fR);
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.SH DESCRIPTION
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.BR Setpgid
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sets the process group of the specified process
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.BR pid
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to the specified
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.BR pgrp .
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If
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.BR pid
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is zero, then the call applies to the current process.
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.LP
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If the invoker is not the super-user, then the affected process
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must have the same effective user-id as the invoker or be a descendant
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of the invoking process.
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.SH RETURN VALUES
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.BR Setpgid
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returns 0 when the operation was successful.
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If the request failed, -1 is returned and the global variable
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.IR errno
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indicates the reason.
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.SH ERRORS
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.BR Setpgid
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will fail and the process group will not be altered if:
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.RS
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.IP \fBESRCH\fR
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The requested process does not exist.
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.IP \fBEPERM\fR
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The effective user ID of the requested process is different
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from that of the caller and the process is not a descendent
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of the calling process.
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.RE
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.SH SEE ALSO
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.BR getpgrp (2)
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.SH STANDARDS
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.BR Setpgid
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conforms to IEEE Std 1003.1-1988 (POSIX).
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.SH COMPATIBILITY
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.BR Setpgrp
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is identical to
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.BR setpgid ,
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and is retained for calling convention compatibility with historical
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versions of BSD.
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