1 /*-
2 * Copyright (C) 2005 Michael J. Silbersack <silby@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice(s), this list of conditions and the following disclaimer as
10 * the first lines of this file unmodified other than the possible
11 * addition of one or more copyright notices.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice(s), this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
26 * DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <err.h>
31 #include <errno.h>
32 #include <fcntl.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <unistd.h>
36
37 /*
38 * This program tests how sys_pipe.c handles the case where there
39 * is ample memory to allocate a pipe, but the file descriptor
40 * limit for that user has been exceeded.
41 */
42
43 int
main(void)44 main(void)
45 {
46 char template[] = "pipe.XXXXXXXXXX";
47 int lastfd, pipes[10000], returnval;
48 unsigned int i;
49
50 lastfd = -1;
51
52 if (mkstemp(template) == -1)
53 err(1, "mkstemp failed");
54
55 for (i = 0; i < nitems(pipes); i++) {
56 returnval = open(template, O_RDONLY);
57 if (returnval == -1 && (errno == ENFILE || errno == EMFILE))
58 break; /* All descriptors exhausted. */
59 else
60 lastfd = returnval;
61 }
62
63 /* First falloc failure case in sys_pipe.c:pipe() */
64 for (i = 0; i < 1000; i++) {
65 returnval = pipe(&pipes[i]);
66 }
67
68 /*
69 * Free just one FD so that the second falloc failure
70 * case will occur.
71 */
72 close(lastfd);
73
74 for (i = 0; i < 1000; i++) {
75 returnval = pipe(&pipes[i]);
76 }
77 printf("PASS\n");
78
79 unlink(template);
80
81 exit(0);
82 }
83