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/*-
* Copyright (C) 2005 Michael J. Silbersack <silby@freebsd.org>
* 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(s), this list of conditions and the following disclaimer as
* the first lines of this file unmodified other than the possible
* addition of one or more copyright notices.
* 2. Redistributions in binary form must reproduce the above copyright
* notice(s), 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 COPYRIGHT HOLDER(S) ``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 COPYRIGHT HOLDER(S) 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.
*/
#include <sys/param.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
/*
* $FreeBSD$
* This program tests how sys_pipe.c handles the case where there
* is ample memory to allocate a pipe, but the file descriptor
* limit for that user has been exceeded.
*/
int
main(void)
{
char template[] = "pipe.XXXXXXXXXX";
int lastfd, pipes[10000], returnval;
unsigned int i;
lastfd = -1;
if (mkstemp(template) == -1)
err(1, "mkstemp failed");
for (i = 0; i < nitems(pipes); i++) {
returnval = open(template, O_RDONLY);
if (returnval == -1 && (errno == ENFILE || errno == EMFILE))
break; /* All descriptors exhausted. */
else
lastfd = returnval;
}
/* First falloc failure case in sys_pipe.c:pipe() */
for (i = 0; i < 1000; i++) {
returnval = pipe(&pipes[i]);
}
/*
* Free just one FD so that the second falloc failure
* case will occur.
*/
close(lastfd);
for (i = 0; i < 1000; i++) {
returnval = pipe(&pipes[i]);
}
printf("PASS\n");
unlink(template);
exit(0);
}
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