41 lines
927 B
Groff
41 lines
927 B
Groff
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.TH SETSID 2
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.SH NAME
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setsid, getpgrp \- create process group, get process group id
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.SH SYNOPSIS
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.ft B
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.nf
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#include <sys/types.h>
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#include <unistd.h>
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pid_t setsid(void)
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pid_t getpgrp(void)
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.fi
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.ft P
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.SH DESCRIPTION
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.B Setsid()
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creates a new session if the calling process is not already a session
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leader. The calling process becomes the session leader of a new process
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group and the process group ID of this new process group will be equal to
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the process ID of the new session leader. The process group ID is inherited
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on a
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.BR fork (2).
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.PP
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.B Getpgrp()
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returns the process group ID of the calling process.
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.SH "SEE ALSO"
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.BR kill (2),
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.BR termios (3),
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.BR tty (4).
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.SH DIAGNOSTICS
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.B Setsid()
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returns the new process group ID on success, or \-1 with
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.B errno
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set to
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.B EPERM
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if the process is already a session leader.
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.SH AUTHOR
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Kees J. Bot (kjb@cs.vu.nl)
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.\"
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.\" $PchId: setsid.2,v 1.2 1996/04/11 06:06:36 philip Exp $
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