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[glibc.git] / stdlib / test-canon.c
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1 /* Test program for returning the canonical absolute name of a given file.
2 Copyright (C) 1996, 1997 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by David Mosberger <davidm@azstarnet.com>.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 License, or (at your option) any later version.
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 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* This file must be run from within a directory called "stdlib". */
23 #include <errno.h>
24 #include <fcntl.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <unistd.h>
29 #include <sys/param.h>
31 static char cwd[PATH_MAX];
32 static size_t cwd_len;
34 struct {
35 const char * name;
36 const char * value;
37 } symlinks[] = {
38 {"SYMLINK_LOOP", "SYMLINK_LOOP"},
39 {"SYMLINK_1", "."},
40 {"SYMLINK_2", "//////./../../etc"},
41 {"SYMLINK_3", "SYMLINK_1"},
42 {"SYMLINK_4", "SYMLINK_2"},
43 {"SYMLINK_5", "doesNotExist"},
46 struct {
47 const char * in, * out, * resolved;
48 int error;
49 } tests[] = {
50 /* 0 */
51 {"/", "/"},
52 {"/////////////////////////////////", "/"},
53 {"/.././.././.././..///", "/"},
54 {"/etc", "/etc"},
55 {"/etc/../etc", "/etc"},
56 /* 5 */
57 {"/doesNotExist/../etc", 0, "/doesNotExist", ENOENT},
58 {"./././././././././.", "."},
59 {"/etc/.//doesNotExist", 0, "/etc/doesNotExist", ENOENT},
60 {"./doesExist", "./doesExist"},
61 {"./doesExist/", "./doesExist"},
62 /* 10 */
63 {"./doesExist/../doesExist", "./doesExist"},
64 {"foobar", 0, "./foobar", ENOENT},
65 {".", "."},
66 {"./foobar", 0, "./foobar", ENOENT},
67 {"SYMLINK_LOOP", 0, "./SYMLINK_LOOP", ELOOP},
68 /* 15 */
69 {"./SYMLINK_LOOP", 0, "./SYMLINK_LOOP", ELOOP},
70 {"SYMLINK_1", "."},
71 {"SYMLINK_1/foobar", 0, "./foobar", ENOENT},
72 {"SYMLINK_2", "/etc"},
73 {"SYMLINK_3", "."},
74 /* 20 */
75 {"SYMLINK_4", "/etc"},
76 {"../stdlib/SYMLINK_1", "."},
77 {"../stdlib/SYMLINK_2", "/etc"},
78 {"../stdlib/SYMLINK_3", "."},
79 {"../stdlib/SYMLINK_4", "/etc"},
80 /* 25 */
81 {"./SYMLINK_5", 0, "./doesNotExist", ENOENT},
82 {"SYMLINK_5", 0, "./doesNotExist", ENOENT},
83 {"SYMLINK_5/foobar", 0, "./doesNotExist", ENOENT},
84 {"doesExist/../../stdlib/doesExist", "./doesExist"},
85 {"doesExist/.././../stdlib/.", "."}
89 int
90 check_path (const char * result, const char * expected)
92 int good;
94 if (!result)
95 return (expected == NULL);
97 if (!expected)
98 return 0;
100 if (expected[0] == '.' && (expected[1] == '/' || expected[1] == '\0'))
101 good = (strncmp (result, cwd, cwd_len) == 0
102 && strcmp (result + cwd_len, expected + 1) == 0);
103 else
104 good = (strcmp (expected, result) == 0);
106 return good;
111 main (int argc, char ** argv)
113 char * result;
114 int fd, i, errors = 0;
115 char buf[PATH_MAX];
117 getcwd (cwd, sizeof(buf));
118 cwd_len = strlen (cwd);
120 errno = 0;
121 if (realpath (NULL, buf) != NULL || errno != EINVAL)
123 printf ("%s: expected return value NULL and errno set to EINVAL"
124 " for realpath(NULL,...)\n", argv[0]);
125 ++errors;
128 errno = 0;
129 if (realpath ("/", NULL) != NULL || errno != EINVAL)
131 printf ("%s: expected return value NULL and errno set to EINVAL"
132 " for realpath(...,NULL)\n", argv[0]);
133 ++errors;
136 errno = 0;
137 if (realpath ("", buf) != NULL || errno != ENOENT)
139 printf ("%s: expected return value NULL and set errno to ENOENT"
140 " for realpath(\"\",...)\n", argv[0]);
141 ++errors;
144 for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i)
145 symlink (symlinks[i].value, symlinks[i].name);
147 fd = open("doesExist", O_CREAT | O_EXCL, 0777);
149 for (i = 0; i < (int) (sizeof (tests) / sizeof (tests[0])); ++i)
151 buf[0] = '\0';
152 result = realpath (tests[i].in, buf);
154 if (!check_path (result, tests[i].out))
156 printf ("%s: flunked test %d (expected `%s', got `%s')\n",
157 argv[0], i, tests[i].out ? tests[i].out : "NULL",
158 result ? result : "NULL");
159 ++errors;
160 continue;
163 if (!check_path (buf, tests[i].out ? tests[i].out : tests[i].resolved))
165 printf ("%s: flunked test %d (expected resolved `%s', got `%s')\n",
166 argv[0], i, tests[i].out ? tests[i].out : tests[i].resolved,
167 buf);
168 ++errors;
169 continue;
172 if (!tests[i].out && errno != tests[i].error)
174 printf ("%s: flunked test %d (expected errno %d, got %d)\n",
175 argv[0], i, tests[i].error, errno);
176 ++errors;
177 continue;
181 getcwd (buf, sizeof(buf));
182 if (strcmp (buf, cwd))
184 printf ("%s: current working directory changed from %s to %s\n",
185 argv[0], cwd, buf);
186 ++errors;
189 if (fd >= 0)
190 unlink("doesExist");
192 for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i)
193 unlink (symlinks[i].name);
195 if (errors != 0)
197 printf ("%d errors.\n", errors);
198 exit (EXIT_FAILURE);
201 puts ("No errors.");
202 return EXIT_SUCCESS;