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Diffstat (limited to 'static/openbsd/man2/_exit.2')
| -rw-r--r-- | static/openbsd/man2/_exit.2 | 139 |
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diff --git a/static/openbsd/man2/_exit.2 b/static/openbsd/man2/_exit.2 new file mode 100644 index 00000000..223274da --- /dev/null +++ b/static/openbsd/man2/_exit.2 @@ -0,0 +1,139 @@ +.\" $OpenBSD: _exit.2,v 1.23 2022/02/18 00:15:53 jsg Exp $ +.\" $NetBSD: _exit.2,v 1.6 1995/02/27 12:31:34 cgd Exp $ +.\" +.\" Copyright (c) 1980, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)_exit.2 8.1 (Berkeley) 6/4/93 +.\" +.Dd $Mdocdate: February 18 2022 $ +.Dt _EXIT 2 +.Os +.Sh NAME +.Nm _exit , +.Nm _Exit +.Nd terminate the calling process +.Sh SYNOPSIS +.In unistd.h +.Ft void +.Fn _exit "int status" +.In stdlib.h +.Ft void +.Fn _Exit "int status" +.Sh DESCRIPTION +The +.Fn _exit +and +.Fn _Exit +functions terminate a process with the following consequences: +.Bl -bullet +.It +All threads in the process are terminated. +.It +All open file descriptors in the calling process are closed. +This may entail delays; for example, waiting for output to drain. +A process in this state may not be killed, as it is already dying. +.It +If the parent process of the calling process has an outstanding +.Xr wait 2 +call or catches the +.Dv SIGCHLD +signal, it is notified of the calling process's termination and +.Fa status +is set as defined by +.Xr wait 2 . +(Note that typically only the lower 8 bits of +.Fa status +are passed on to the parent, thus negative values have less meaning.) +.It +The parent process ID of all of the calling process's existing child +processes are set to 1; the initialization process (see the +DEFINITIONS section of +.Xr intro 2 ) +inherits each of these processes. +.It +If the termination of the process causes any process group +to become orphaned (usually because the parents of all members +of the group have now exited; see Orphaned Process Group in +.Xr intro 2 ) , +and if any member of the orphaned group is stopped, the +.Dv SIGHUP +and +.Dv SIGCONT +signals are sent to all members of the newly orphaned process group. +.It +If the process is a controlling process (see +.Xr intro 2 ) , +the +.Dv SIGHUP +signal is sent to the foreground process group of the controlling terminal, +and all current access to the controlling terminal is revoked. +.El +.Pp +Most C programs call the library routine +.Xr exit 3 , +which flushes buffers, closes streams, unlinks temporary files, etc., +and then calls +.Fn _exit . +.Sh RETURN VALUES +.Fn _exit +and +.Fn _Exit +can never return. +.Sh SEE ALSO +.Xr fork 2 , +.Xr intro 2 , +.Xr sigaction 2 , +.Xr wait 2 , +.Xr exit 3 , +.Xr sysexits 3 +.Sh STANDARDS +The +.Fn _exit +function conforms to +.St -p1003.1-2008 . +The +.Fn _Exit +function conforms to +.St -isoC-99 . +.Sh HISTORY +An +.Fn exit +system call first appeared in +.At v1 . +It accepts the +.Fa status +argument since +.At v2 . +An +.Fn _exit +variant first appeared in +.At v7 . +The +.Fn _Exit +function appeared in +.Ox 3.6 . |