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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, 2000, 2002 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 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.
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.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 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 /* Prototype for our test function. */
32 extern int do_test (int argc, char *argv[]);
33 #include <test-skeleton.c>
35 #ifndef PATH_MAX
36 # define PATH_MAX 4096
37 #endif
38 static char cwd[PATH_MAX];
39 static size_t cwd_len;
41 struct {
42 const char * name;
43 const char * value;
44 } symlinks[] = {
45 {"SYMLINK_LOOP", "SYMLINK_LOOP"},
46 {"SYMLINK_1", "."},
47 {"SYMLINK_2", "//////./../../etc"},
48 {"SYMLINK_3", "SYMLINK_1"},
49 {"SYMLINK_4", "SYMLINK_2"},
50 {"SYMLINK_5", "doesNotExist"},
53 struct {
54 const char * in, * out, * resolved;
55 int error;
56 } tests[] = {
57 /* 0 */
58 {"/", "/"},
59 {"/////////////////////////////////", "/"},
60 {"/.././.././.././..///", "/"},
61 {"/etc", "/etc"},
62 {"/etc/../etc", "/etc"},
63 /* 5 */
64 {"/doesNotExist/../etc", 0, "/doesNotExist", ENOENT},
65 {"./././././././././.", "."},
66 {"/etc/.//doesNotExist", 0, "/etc/doesNotExist", ENOENT},
67 {"./doesExist", "./doesExist"},
68 {"./doesExist/", "./doesExist"},
69 /* 10 */
70 {"./doesExist/../doesExist", "./doesExist"},
71 {"foobar", 0, "./foobar", ENOENT},
72 {".", "."},
73 {"./foobar", 0, "./foobar", ENOENT},
74 {"SYMLINK_LOOP", 0, "./SYMLINK_LOOP", ELOOP},
75 /* 15 */
76 {"./SYMLINK_LOOP", 0, "./SYMLINK_LOOP", ELOOP},
77 {"SYMLINK_1", "."},
78 {"SYMLINK_1/foobar", 0, "./foobar", ENOENT},
79 {"SYMLINK_2", "/etc"},
80 {"SYMLINK_3", "."},
81 /* 20 */
82 {"SYMLINK_4", "/etc"},
83 {"../stdlib/SYMLINK_1", "."},
84 {"../stdlib/SYMLINK_2", "/etc"},
85 {"../stdlib/SYMLINK_3", "."},
86 {"../stdlib/SYMLINK_4", "/etc"},
87 /* 25 */
88 {"./SYMLINK_5", 0, "./doesNotExist", ENOENT},
89 {"SYMLINK_5", 0, "./doesNotExist", ENOENT},
90 {"SYMLINK_5/foobar", 0, "./doesNotExist", ENOENT},
91 {"doesExist/../../stdlib/doesExist", "./doesExist"},
92 {"doesExist/.././../stdlib/.", "."}
96 static int
97 check_path (const char * result, const char * expected)
99 int good;
101 if (!result)
102 return (expected == NULL);
104 if (!expected)
105 return 0;
107 if (expected[0] == '.' && (expected[1] == '/' || expected[1] == '\0'))
108 good = (strncmp (result, cwd, cwd_len) == 0
109 && strcmp (result + cwd_len, expected + 1) == 0);
110 else
111 good = (strcmp (expected, result) == 0);
113 return good;
118 do_test (int argc, char ** argv)
120 char * result;
121 int fd, i, errors = 0;
122 char buf[PATH_MAX];
124 getcwd (cwd, sizeof(buf));
125 cwd_len = strlen (cwd);
127 errno = 0;
128 if (realpath (NULL, buf) != NULL || errno != EINVAL)
130 printf ("%s: expected return value NULL and errno set to EINVAL"
131 " for realpath(NULL,...)\n", argv[0]);
132 ++errors;
135 #if 0
136 /* This is now allowed. The test is invalid. */
137 errno = 0;
138 if (realpath ("/", NULL) != NULL || errno != EINVAL)
140 printf ("%s: expected return value NULL and errno set to EINVAL"
141 " for realpath(...,NULL)\n", argv[0]);
142 ++errors;
144 #endif
146 errno = 0;
147 if (realpath ("", buf) != NULL || errno != ENOENT)
149 printf ("%s: expected return value NULL and set errno to ENOENT"
150 " for realpath(\"\",...)\n", argv[0]);
151 ++errors;
154 for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i)
155 symlink (symlinks[i].value, symlinks[i].name);
157 fd = open("doesExist", O_CREAT | O_EXCL, 0777);
159 for (i = 0; i < (int) (sizeof (tests) / sizeof (tests[0])); ++i)
161 buf[0] = '\0';
162 result = realpath (tests[i].in, buf);
164 if (!check_path (result, tests[i].out))
166 printf ("%s: flunked test %d (expected `%s', got `%s')\n",
167 argv[0], i, tests[i].out ? tests[i].out : "NULL",
168 result ? result : "NULL");
169 ++errors;
170 continue;
173 if (!check_path (buf, tests[i].out ? tests[i].out : tests[i].resolved))
175 printf ("%s: flunked test %d (expected resolved `%s', got `%s')\n",
176 argv[0], i, tests[i].out ? tests[i].out : tests[i].resolved,
177 buf);
178 ++errors;
179 continue;
182 if (!tests[i].out && errno != tests[i].error)
184 printf ("%s: flunked test %d (expected errno %d, got %d)\n",
185 argv[0], i, tests[i].error, errno);
186 ++errors;
187 continue;
191 getcwd (buf, sizeof(buf));
192 if (strcmp (buf, cwd))
194 printf ("%s: current working directory changed from %s to %s\n",
195 argv[0], cwd, buf);
196 ++errors;
199 if (fd >= 0)
200 unlink("doesExist");
202 for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i)
203 unlink (symlinks[i].name);
205 if (errors != 0)
207 printf ("%d errors.\n", errors);
208 return EXIT_FAILURE;
211 puts ("No errors.");
212 return EXIT_SUCCESS;