e30a620063
tests/sys/kern/pipe - Fix style(9) bugs - Fix compiler warnings - Use `nitems(x)` instead of `sizeof(x) / sizeof(*x)` pattern The testcases will be converted over to ATF eventually, but for now will be integrated in as plain C tests MFC after: 1 week Sponsored by: EMC / Isilon Storage Division
84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
/*-
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* Copyright (C) 2005 Michael J. Silbersack <silby@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice(s), this list of conditions and the following disclaimer as
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* the first lines of this file unmodified other than the possible
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* addition of one or more copyright notices.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice(s), this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*/
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#include <sys/param.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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/*
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* $FreeBSD$
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* This program tests how sys_pipe.c handles the case where there
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* is ample memory to allocate a pipe, but the file descriptor
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* limit for that user has been exceeded.
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*/
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int
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main(void)
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{
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char template[] = "pipe.XXXXXXXXXX";
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int lastfd, pipes[10000], returnval;
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unsigned int i;
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lastfd = -1;
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if (mkstemp(template) == -1)
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err(1, "mkstemp failed");
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for (i = 0; i < nitems(pipes); i++) {
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returnval = open(template, O_RDONLY);
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if (returnval == -1 && (errno == ENFILE || errno == EMFILE))
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break; /* All descriptors exhausted. */
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else
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lastfd = returnval;
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}
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/* First falloc failure case in sys_pipe.c:pipe() */
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for (i = 0; i < 1000; i++) {
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returnval = pipe(&pipes[i]);
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}
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/*
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* Free just one FD so that the second falloc failure
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* case will occur.
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*/
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close(lastfd);
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for (i = 0; i < 1000; i++) {
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returnval = pipe(&pipes[i]);
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}
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printf("PASS\n");
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unlink(template);
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exit(0);
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}
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