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 * $FreeBSD$ 39 * This program tests how sys_pipe.c handles the case where there 40 * is ample memory to allocate a pipe, but the file descriptor 41 * limit for that user has been exceeded. 42 */ 43 44 int 45 main(void) 46 { 47 char template[] = "pipe.XXXXXXXXXX"; 48 int lastfd, pipes[10000], returnval; 49 unsigned int i; 50 51 lastfd = -1; 52 53 if (mkstemp(template) == -1) 54 err(1, "mkstemp failed"); 55 56 for (i = 0; i < nitems(pipes); i++) { 57 returnval = open(template, O_RDONLY); 58 if (returnval == -1 && (errno == ENFILE || errno == EMFILE)) 59 break; /* All descriptors exhausted. */ 60 else 61 lastfd = returnval; 62 } 63 64 /* First falloc failure case in sys_pipe.c:pipe() */ 65 for (i = 0; i < 1000; i++) { 66 returnval = pipe(&pipes[i]); 67 } 68 69 /* 70 * Free just one FD so that the second falloc failure 71 * case will occur. 72 */ 73 close(lastfd); 74 75 for (i = 0; i < 1000; i++) { 76 returnval = pipe(&pipes[i]); 77 } 78 printf("PASS\n"); 79 80 unlink(template); 81 82 exit(0); 83 } 84