| 1 | /* Test of lstat() function.
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| 2 | Copyright (C) 2008-2012 Free Software Foundation, Inc.
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| 3 |
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| 4 | This program is free software: you can redistribute it and/or modify
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| 5 | it under the terms of the GNU General Public License as published by
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| 6 | the Free Software Foundation; either version 3 of the License, or
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| 7 | (at your option) any later version.
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| 8 |
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| 9 | This program is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License
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| 15 | along with this program. If not, see <http://www.gnu.org/licenses/>. */
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| 16 |
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| 17 | /* Written by Simon Josefsson, 2008; and Eric Blake, 2009. */
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| 18 |
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| 19 | /* This file is designed to test both lstat(n,buf) and
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| 20 | fstatat(AT_FDCWD,n,buf,AT_SYMLINK_NOFOLLOW). FUNC is the function
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| 21 | to test. Assumes that BASE and ASSERT are already defined, and
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| 22 | that appropriate headers are already included. If PRINT, warn
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| 23 | before skipping symlink tests with status 77. */
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| 24 |
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| 25 | static int
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| 26 | test_lstat_func (int (*func) (char const *, struct stat *), bool print)
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| 27 | {
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| 28 | struct stat st1;
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| 29 | struct stat st2;
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| 30 |
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| 31 | /* Test for common directories. */
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| 32 | ASSERT (func (".", &st1) == 0);
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| 33 | ASSERT (func ("./", &st2) == 0);
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| 34 | ASSERT (SAME_INODE (st1, st2));
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| 35 | ASSERT (S_ISDIR (st1.st_mode));
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| 36 | ASSERT (S_ISDIR (st2.st_mode));
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| 37 | ASSERT (func ("/", &st1) == 0);
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| 38 | ASSERT (func ("///", &st2) == 0);
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| 39 | ASSERT (SAME_INODE (st1, st2));
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| 40 | ASSERT (S_ISDIR (st1.st_mode));
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| 41 | ASSERT (S_ISDIR (st2.st_mode));
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| 42 | ASSERT (func ("..", &st1) == 0);
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| 43 | ASSERT (S_ISDIR (st1.st_mode));
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| 44 |
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| 45 | /* Test for error conditions. */
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| 46 | errno = 0;
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| 47 | ASSERT (func ("", &st1) == -1);
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| 48 | ASSERT (errno == ENOENT);
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| 49 | errno = 0;
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| 50 | ASSERT (func ("nosuch", &st1) == -1);
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| 51 | ASSERT (errno == ENOENT);
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| 52 | errno = 0;
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| 53 | ASSERT (func ("nosuch/", &st1) == -1);
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| 54 | ASSERT (errno == ENOENT);
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| 55 |
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| 56 | ASSERT (close (creat (BASE "file", 0600)) == 0);
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| 57 | ASSERT (func (BASE "file", &st1) == 0);
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| 58 | ASSERT (S_ISREG (st1.st_mode));
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| 59 | errno = 0;
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| 60 | ASSERT (func (BASE "file/", &st1) == -1);
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| 61 | ASSERT (errno == ENOTDIR);
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| 62 |
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| 63 | /* Now for some symlink tests, where supported. We set up:
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| 64 | link1 -> directory
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| 65 | link2 -> file
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| 66 | link3 -> dangling
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| 67 | link4 -> loop
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| 68 | then test behavior both with and without trailing slash.
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| 69 | */
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| 70 | if (symlink (".", BASE "link1") != 0)
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| 71 | {
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| 72 | ASSERT (unlink (BASE "file") == 0);
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| 73 | if (print)
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| 74 | fputs ("skipping test: symlinks not supported on this file system\n",
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| 75 | stderr);
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| 76 | return 77;
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| 77 | }
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| 78 | ASSERT (symlink (BASE "file", BASE "link2") == 0);
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| 79 | ASSERT (symlink (BASE "nosuch", BASE "link3") == 0);
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| 80 | ASSERT (symlink (BASE "link4", BASE "link4") == 0);
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| 81 |
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| 82 | ASSERT (func (BASE "link1", &st1) == 0);
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| 83 | ASSERT (S_ISLNK (st1.st_mode));
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| 84 | ASSERT (func (BASE "link1/", &st1) == 0);
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| 85 | ASSERT (stat (BASE "link1", &st2) == 0);
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| 86 | ASSERT (S_ISDIR (st1.st_mode));
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| 87 | ASSERT (S_ISDIR (st2.st_mode));
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| 88 | ASSERT (SAME_INODE (st1, st2));
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| 89 |
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| 90 | ASSERT (func (BASE "link2", &st1) == 0);
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| 91 | ASSERT (S_ISLNK (st1.st_mode));
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| 92 | errno = 0;
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| 93 | ASSERT (func (BASE "link2/", &st1) == -1);
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| 94 | ASSERT (errno == ENOTDIR);
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| 95 |
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| 96 | ASSERT (func (BASE "link3", &st1) == 0);
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| 97 | ASSERT (S_ISLNK (st1.st_mode));
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| 98 | errno = 0;
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| 99 | ASSERT (func (BASE "link3/", &st1) == -1);
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| 100 | ASSERT (errno == ENOENT);
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| 101 |
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| 102 | ASSERT (func (BASE "link4", &st1) == 0);
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| 103 | ASSERT (S_ISLNK (st1.st_mode));
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| 104 | errno = 0;
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| 105 | ASSERT (func (BASE "link4/", &st1) == -1);
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| 106 | ASSERT (errno == ELOOP);
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| 107 |
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| 108 | /* Cleanup. */
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| 109 | ASSERT (unlink (BASE "file") == 0);
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| 110 | ASSERT (unlink (BASE "link1") == 0);
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| 111 | ASSERT (unlink (BASE "link2") == 0);
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| 112 | ASSERT (unlink (BASE "link3") == 0);
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| 113 | ASSERT (unlink (BASE "link4") == 0);
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| 114 |
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| 115 | return 0;
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| 116 | }
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