88fa3a7649
FreeBSD's mkstemp sets the temporary file's permissions to 600, and has ever since mkstemp was added in 1987. Coverity's warning is still relevant for portable programs since OpenGroup does not require that behavior, and POSIX didn't until 2008. But none of these programs are portable.
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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