58 lines
1.5 KiB
Groff
58 lines
1.5 KiB
Groff
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.\" Copyright (c) 1980 Regents of the University of California.
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.\" All rights reserved. The Berkeley software License Agreement
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.\" specifies the terms and conditions for redistribution.
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.\"
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.\" @(#)exit.2 6.4 (Berkeley) 5/22/86
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.\"
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.TH EXIT 2 "May 22, 1986"
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.UC 4
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.SH NAME
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exit, _exit \- terminate a process
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.SH SYNOPSIS
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.nf
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.ft B
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void _exit(int \fIstatus\fP)
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.fi
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.SH DESCRIPTION
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.de SP
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.if t .sp 0.4
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.if n .sp
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..
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.B _exit
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terminates a process with the following consequences:
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.RS
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.SP
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All of the descriptors open in the calling process are closed.
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This may entail delays, for example, waiting for output to drain;
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a process in this state may not be killed, as it is already dying.
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.SP
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If the parent process of the calling process is executing a
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.B wait
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or is interested in the SIGCHLD signal (Minix-vmd),
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then it is notified of the calling process's termination and
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the low-order eight bits of \fIstatus\fP are made available to it;
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see
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.BR wait (2).
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.SP
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The parent process ID of all of the calling process's existing child
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processes are also set to 1. This means that the initialization process
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(see
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.BR intro (2))
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inherits each of these processes as well.
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.ig
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Any stopped children are restarted with a hangup signal (SIGHUP).
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..
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.RE
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.PP
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Most C programs call the library routine
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.BR exit (3),
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which performs cleanup actions in the standard I/O library before
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calling \fI_exit\fP\|.
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.SH "RETURN VALUE"
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This call never returns.
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.SH "SEE ALSO"
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.BR fork (2),
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.BR sigaction (2),
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.BR wait (2),
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.BR exit (3).
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