lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Test of getcwd function. |
| 2 | Copyright (C) 2000-2015 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000. |
| 5 | |
| 6 | The GNU C Library is free software; you can redistribute it and/or |
| 7 | modify it under the terms of the GNU Lesser General Public |
| 8 | License as published by the Free Software Foundation; either |
| 9 | version 2.1 of the License, or (at your option) any later version. |
| 10 | |
| 11 | The GNU C Library is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | Lesser General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU Lesser General Public |
| 17 | License along with the GNU C Library; if not, see |
| 18 | <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include <errno.h> |
| 21 | #include <stdio.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
| 24 | #include <unistd.h> |
| 25 | #include <sys/param.h> |
| 26 | |
| 27 | |
| 28 | #define TEST_FUNCTION do_test () |
| 29 | static int |
| 30 | do_test (void) |
| 31 | { |
| 32 | char thepath[4096]; /* Yes, this limits the environment this test |
| 33 | can run it but I honestly don't care about |
| 34 | people which have this problem. */ |
| 35 | char *bufs[10]; |
| 36 | size_t lens[10]; |
| 37 | size_t sbs; |
| 38 | size_t len, i; |
| 39 | |
| 40 | if (getcwd (thepath, sizeof thepath) == NULL) |
| 41 | { |
| 42 | if (errno == ERANGE) |
| 43 | /* The path is too long, skip all tests. */ |
| 44 | return 0; |
| 45 | |
| 46 | puts ("getcwd (thepath, sizeof thepath) failed"); |
| 47 | return 1; |
| 48 | } |
| 49 | len = strlen (thepath); |
| 50 | |
| 51 | sbs = 1; |
| 52 | while (sbs < len + 1) |
| 53 | sbs <<= 1; |
| 54 | |
| 55 | for (i = 0; i < 4; ++i) |
| 56 | { |
| 57 | lens[i] = sbs; |
| 58 | bufs[i] = (char *) malloc (sbs); |
| 59 | } |
| 60 | |
| 61 | bufs[i] = getcwd (NULL, sbs); |
| 62 | lens[i] = sbs; |
| 63 | if (bufs[i] == NULL) |
| 64 | { |
| 65 | puts ("getcwd (NULL, sbs) failed"); |
| 66 | return 1; |
| 67 | } |
| 68 | ++i; |
| 69 | |
| 70 | for (; i < 10; sbs >>= 1, ++i) |
| 71 | { |
| 72 | bufs[i] = (char *) malloc (MAX (1, sbs)); |
| 73 | lens[i] = sbs; |
| 74 | } |
| 75 | |
| 76 | /* Before we test the result write something in the memory to see |
| 77 | whether the allocation went right. */ |
| 78 | for (i = 0; i < 10; ++i) |
| 79 | if (i != 4 && bufs[i] != NULL) |
| 80 | memset (bufs[i], '\xff', lens[i]); |
| 81 | |
| 82 | if (strcmp (thepath, bufs[4]) != 0) |
| 83 | { |
| 84 | printf ("\ |
| 85 | getcwd (NULL, sbs) = \"%s\", getcwd (thepath, sizeof thepath) = \"%s\"\n", |
| 86 | bufs[4], thepath); |
| 87 | return 1; |
| 88 | } |
| 89 | |
| 90 | /* Now overwrite all buffers to see that getcwd allocated the buffer |
| 91 | of right size. */ |
| 92 | for (i = 0; i < 10; ++i) |
| 93 | memset (bufs[i], i, lens[i]); |
| 94 | |
| 95 | for (i = 0; i < 10; ++i) |
| 96 | free (bufs[i]); |
| 97 | |
| 98 | /* Test whether the function signals success despite the buffer |
| 99 | being too small. */ |
| 100 | if (getcwd (NULL, len) != NULL) |
| 101 | { |
| 102 | puts ("getcwd (NULL, len) didn't failed"); |
| 103 | return 1; |
| 104 | } |
| 105 | |
| 106 | bufs[0] = malloc (len); |
| 107 | bufs[1] = malloc (len); |
| 108 | bufs[2] = malloc (len); |
| 109 | if (bufs[1] != NULL) |
| 110 | { |
| 111 | if (getcwd (bufs[1], len) != NULL) |
| 112 | { |
| 113 | puts ("getcwd (bufs[1], len) didn't failed"); |
| 114 | return 1; |
| 115 | } |
| 116 | free (bufs[0]); |
| 117 | free (bufs[1]); |
| 118 | free (bufs[2]); |
| 119 | } |
| 120 | |
| 121 | memset (thepath, '\xfe', sizeof (thepath)); |
| 122 | if (getcwd (thepath, len) != NULL) |
| 123 | { |
| 124 | puts ("getcwd (thepath, len) didn't failed"); |
| 125 | return 1; |
| 126 | } |
| 127 | |
| 128 | for (i = len; i < sizeof thepath; ++i) |
| 129 | if (thepath[i] != '\xfe') |
| 130 | { |
| 131 | puts ("thepath[i] != '\xfe'"); |
| 132 | return 1; |
| 133 | } |
| 134 | |
| 135 | /* Now test handling of correctly sized buffers. */ |
| 136 | bufs[0] = getcwd (NULL, len + 1); |
| 137 | if (bufs[0] == NULL) |
| 138 | { |
| 139 | puts ("getcwd (NULL, len + 1) failed"); |
| 140 | return 1; |
| 141 | } |
| 142 | free (bufs[0]); |
| 143 | |
| 144 | memset (thepath, '\xff', sizeof thepath); |
| 145 | if (getcwd (thepath, len + 1) == NULL) |
| 146 | { |
| 147 | puts ("getcwd (thepath, len + 1) failed"); |
| 148 | return 1; |
| 149 | } |
| 150 | |
| 151 | for (i = len + 1; i < sizeof thepath; ++i) |
| 152 | if (thepath[i] != '\xff') |
| 153 | { |
| 154 | printf ("thepath[%zd] != '\xff'\n", i); |
| 155 | return 1; |
| 156 | } |
| 157 | |
| 158 | puts ("everything OK"); |
| 159 | |
| 160 | return 0; |
| 161 | } |
| 162 | |
| 163 | #include "../test-skeleton.c" |