xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 2003-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <fcntl.h> |
| 20 | #include <pthread.h> |
| 21 | #include <stdbool.h> |
| 22 | #include <stdio.h> |
| 23 | #include <stdlib.h> |
| 24 | #include <unistd.h> |
| 25 | #include <sys/stat.h> |
| 26 | |
| 27 | |
| 28 | static struct |
| 29 | { |
| 30 | int (*fp) (const char *, mode_t); |
| 31 | const char *name; |
| 32 | bool is_fd; |
| 33 | } fcts[] = |
| 34 | { |
| 35 | { creat, "creat", true }, |
| 36 | { mkdir, "mkdir", false }, |
| 37 | { mkfifo, "mkfifo", false }, |
| 38 | }; |
| 39 | #define nfcts (sizeof (fcts) / sizeof (fcts[0])) |
| 40 | |
| 41 | |
| 42 | static int |
| 43 | work (const char *fname, int mask) |
| 44 | { |
| 45 | int result = 0; |
| 46 | size_t i; |
| 47 | for (i = 0; i < nfcts; ++i) |
| 48 | { |
| 49 | remove (fname); |
| 50 | int fd = fcts[i].fp (fname, 0777); |
| 51 | if (fd == -1) |
| 52 | { |
| 53 | printf ("cannot %s %s: %m\n", fcts[i].name, fname); |
| 54 | exit (1); |
| 55 | } |
| 56 | if (fcts[i].is_fd) |
| 57 | close (fd); |
| 58 | struct stat64 st; |
| 59 | if (stat64 (fname, &st) == -1) |
| 60 | { |
| 61 | printf ("cannot stat %s after %s: %m\n", fname, fcts[i].name); |
| 62 | exit (1); |
| 63 | } |
| 64 | |
| 65 | if ((st.st_mode & mask) != 0) |
| 66 | { |
| 67 | printf ("mask not successful after %s: %x still set\n", |
| 68 | fcts[i].name, (unsigned int) (st.st_mode & mask)); |
| 69 | result = 1; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | return result; |
| 74 | } |
| 75 | |
| 76 | |
| 77 | static pthread_barrier_t bar; |
| 78 | |
| 79 | |
| 80 | static void * |
| 81 | tf (void *arg) |
| 82 | { |
| 83 | pthread_barrier_wait (&bar); |
| 84 | |
| 85 | int result = work (arg, 022); |
| 86 | |
| 87 | pthread_barrier_wait (&bar); |
| 88 | |
| 89 | pthread_barrier_wait (&bar); |
| 90 | |
| 91 | return (work (arg, 0) | result) ? (void *) -1l : NULL; |
| 92 | } |
| 93 | |
| 94 | |
| 95 | static int |
| 96 | do_test (const char *fname) |
| 97 | { |
| 98 | int result = 0; |
| 99 | |
| 100 | umask (0); |
| 101 | result |= work (fname, 0); |
| 102 | |
| 103 | pthread_barrier_init (&bar, NULL, 2); |
| 104 | |
| 105 | pthread_t th; |
| 106 | if (pthread_create (&th, NULL, tf, (void *) fname) != 0) |
| 107 | { |
| 108 | puts ("cannot create thread"); |
| 109 | exit (1); |
| 110 | } |
| 111 | |
| 112 | umask (022); |
| 113 | result |= work (fname, 022); |
| 114 | |
| 115 | pthread_barrier_wait (&bar); |
| 116 | |
| 117 | pthread_barrier_wait (&bar); |
| 118 | |
| 119 | umask (0); |
| 120 | |
| 121 | pthread_barrier_wait (&bar); |
| 122 | |
| 123 | void *res; |
| 124 | if (pthread_join (th, &res) != 0) |
| 125 | { |
| 126 | puts ("join failed"); |
| 127 | exit (1); |
| 128 | } |
| 129 | |
| 130 | remove (fname); |
| 131 | |
| 132 | return result || res != NULL; |
| 133 | } |
| 134 | |
| 135 | #define TEST_FUNCTION do_test (argc < 2 ? "/tmp/tst-umask.tmp" : argv[1]) |
| 136 | #include "../test-skeleton.c" |