1 /* 2 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.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, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "tests.h" 29 #include <assert.h> 30 #include <unistd.h> 31 #include <sys/stat.h> 32 33 #define N_FDS 3 34 35 /* 36 * Do not print any messages, indicate errors with return codes. 37 */ 38 static int 39 check_fd(int fd, const char *fname) 40 { 41 const int should_be_closed = (fname[0] == '\0'); 42 43 struct stat st_fd, st_fn; 44 45 if (fstat(fd, &st_fd)) { 46 if (!should_be_closed) 47 return 10 + fd; 48 } else { 49 if (should_be_closed) 50 return 20 + fd; 51 52 if (stat(fname, &st_fn)) 53 return 30 + fd; 54 55 if (st_fd.st_dev != st_fn.st_dev 56 || st_fd.st_ino != st_fn.st_ino) 57 return 40 + fd; 58 } 59 60 return 0; 61 } 62 63 int 64 main(int ac, char **av) 65 { 66 assert(ac == 1 + N_FDS); 67 68 int rc = 0, fd; 69 for (fd = 1; fd < 1 + N_FDS; ++fd) 70 if ((rc = check_fd(fd - 1, av[fd]))) 71 break; 72 73 return rc; 74 } 75
