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Add abort2 manual page.

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Submitted by:	"Wojciech A. Koszek" <dunstan@freebsd.czest.pl>
Edited by:	phk
This commit is contained in:
Poul-Henning Kamp 2005-12-23 12:27:42 +00:00
parent d0873c5d1d
commit 4c13606d1e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=153683
2 changed files with 100 additions and 1 deletions
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2
lib/libc/sys/Makefile.inc
View file

@ -53,7 +53,7 @@ ${SPSEUDO}:
printf '#include "SYS.h"\nPSEUDO(${.PREFIX:S/_//})\n' \
> ${.TARGET}
MAN+= _exit.2 accept.2 access.2 acct.2 adjtime.2 \
MAN+= _exit.2 abort2.2 accept.2 access.2 acct.2 adjtime.2 \
aio_cancel.2 aio_error.2 aio_read.2 aio_return.2 \
aio_suspend.2 aio_waitcomplete.2 aio_write.2 \
bind.2 brk.2 chdir.2 chflags.2 \

99
lib/libc/sys/abort2.2 Normal file
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@ -0,0 +1,99 @@
.\" Copyright (c) 2005 Wojciech A. Koszek <dunstan@FreeBSD.czest.pl>
.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
.\"
.\" $FreeBSD$
.Dd December 23, 2005
.Dt ABORT2 3
.Os
.Sh NAME
.Nm abort2
.Nd abort process with diagnostics.
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In stdlib.h
.Ft void
.Fo abort2
.Fa "char *why"
.Fa "int argc"
.Fa "void **args"
.Fc
.Sh DESCRIPTION
The
.Fn abort2
function causes the process to be killed and the specified diagnostic
message (with arguments) is delivered by the kernel to the
.Xr syslogd 8
daemon.
.Pp
.Fa why
is NULL-terminated string containing reason of program termination (max 128 char long).
.Fa args
contains pointers which will be logged numerically (kernels '%p'
.Xr printf 9
format).
.Fa nargs
is number of pointers in
.Fa args ,
(max 16).
.Pp
.Fn abort2
is intended for use in situations where continuation of the process
is impossible or for other definitive reasons unwanted, and normal
diagnostic channels cannot be trusted to deliver the message.
.Sh EXAMPLES
.Bd -literal -compact
#include <stdlib.h>
if (weight_kg > max_load) {
void *ptrs[3];
ptrs[0] = (void*)weight_kg;
ptrs[1] = (void *)max_load;
ptrs[2] = haystack;
abort2("Camel overloaded", 3, ptrs);
}
.Ed
.Sh RETURN VALUES
The
.Fn abort2
function
never returns.
.Pp
The process is killed sith SIGABRT unless the arguments to
.Fn abort2
are invalid, in which case SIGKILL is used.
.Sh SEE ALSO
.Xr exit 3 ,
.Xr abort 3
.Sh HISTORY
The
.Fn abort2
function first appeared in
.Fx 7.0 .
.Sh AUTHORS
Design:
.An "Poul-Henning Kamp" Aq phk@FreeBSD.org .
Implementation:
.An "Wojciech A. Koszek" Aq dunstan@freebsd.czest.pl .