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394f4f17 | 1 | /* Test program for returning the canonical absolute name of a given file. |
b168057a | 2 | Copyright (C) 1996-2015 Free Software Foundation, Inc. |
c84142e8 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by David Mosberger <davidm@azstarnet.com>. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
c84142e8 UD |
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 | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
c84142e8 | 15 | |
41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
394f4f17 RM |
19 | |
20 | /* This file must be run from within a directory called "stdlib". */ | |
21 | ||
22 | #include <errno.h> | |
23 | #include <fcntl.h> | |
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
27 | #include <unistd.h> | |
28 | #include <sys/param.h> | |
29 | ||
e25054c4 AJ |
30 | /* Prototype for our test function. */ |
31 | extern int do_test (int argc, char *argv[]); | |
32 | #include <test-skeleton.c> | |
33 | ||
a3f4b50b UD |
34 | #ifndef PATH_MAX |
35 | # define PATH_MAX 4096 | |
36 | #endif | |
2303f5fd | 37 | static char cwd[PATH_MAX]; |
394f4f17 RM |
38 | static size_t cwd_len; |
39 | ||
40 | struct { | |
41 | const char * name; | |
42 | const char * value; | |
43 | } symlinks[] = { | |
44 | {"SYMLINK_LOOP", "SYMLINK_LOOP"}, | |
45 | {"SYMLINK_1", "."}, | |
46 | {"SYMLINK_2", "//////./../../etc"}, | |
47 | {"SYMLINK_3", "SYMLINK_1"}, | |
48 | {"SYMLINK_4", "SYMLINK_2"}, | |
49 | {"SYMLINK_5", "doesNotExist"}, | |
50 | }; | |
51 | ||
52 | struct { | |
53 | const char * in, * out, * resolved; | |
ec4b0518 | 54 | int error; |
394f4f17 RM |
55 | } tests[] = { |
56 | /* 0 */ | |
57 | {"/", "/"}, | |
58 | {"/////////////////////////////////", "/"}, | |
59 | {"/.././.././.././..///", "/"}, | |
60 | {"/etc", "/etc"}, | |
e25054c4 | 61 | {"/etc/../etc", "/etc"}, |
394f4f17 RM |
62 | /* 5 */ |
63 | {"/doesNotExist/../etc", 0, "/doesNotExist", ENOENT}, | |
64 | {"./././././././././.", "."}, | |
65 | {"/etc/.//doesNotExist", 0, "/etc/doesNotExist", ENOENT}, | |
66 | {"./doesExist", "./doesExist"}, | |
67 | {"./doesExist/", "./doesExist"}, | |
68 | /* 10 */ | |
69 | {"./doesExist/../doesExist", "./doesExist"}, | |
70 | {"foobar", 0, "./foobar", ENOENT}, | |
71 | {".", "."}, | |
72 | {"./foobar", 0, "./foobar", ENOENT}, | |
73 | {"SYMLINK_LOOP", 0, "./SYMLINK_LOOP", ELOOP}, | |
74 | /* 15 */ | |
75 | {"./SYMLINK_LOOP", 0, "./SYMLINK_LOOP", ELOOP}, | |
76 | {"SYMLINK_1", "."}, | |
77 | {"SYMLINK_1/foobar", 0, "./foobar", ENOENT}, | |
78 | {"SYMLINK_2", "/etc"}, | |
79 | {"SYMLINK_3", "."}, | |
80 | /* 20 */ | |
81 | {"SYMLINK_4", "/etc"}, | |
82 | {"../stdlib/SYMLINK_1", "."}, | |
83 | {"../stdlib/SYMLINK_2", "/etc"}, | |
84 | {"../stdlib/SYMLINK_3", "."}, | |
85 | {"../stdlib/SYMLINK_4", "/etc"}, | |
86 | /* 25 */ | |
87 | {"./SYMLINK_5", 0, "./doesNotExist", ENOENT}, | |
88 | {"SYMLINK_5", 0, "./doesNotExist", ENOENT}, | |
89 | {"SYMLINK_5/foobar", 0, "./doesNotExist", ENOENT}, | |
90 | {"doesExist/../../stdlib/doesExist", "./doesExist"}, | |
0f888d8e UD |
91 | {"doesExist/.././../stdlib/.", "."}, |
92 | /* 30 */ | |
93 | {"./doesExist/someFile/", 0, "./doesExist/someFile", ENOTDIR}, | |
94 | {"./doesExist/someFile/..", 0, "./doesExist/someFile", ENOTDIR}, | |
394f4f17 RM |
95 | }; |
96 | ||
97 | ||
cf3141a5 | 98 | static int |
394f4f17 RM |
99 | check_path (const char * result, const char * expected) |
100 | { | |
101 | int good; | |
102 | ||
103 | if (!result) | |
104 | return (expected == NULL); | |
105 | ||
106 | if (!expected) | |
107 | return 0; | |
108 | ||
109 | if (expected[0] == '.' && (expected[1] == '/' || expected[1] == '\0')) | |
110 | good = (strncmp (result, cwd, cwd_len) == 0 | |
111 | && strcmp (result + cwd_len, expected + 1) == 0); | |
112 | else | |
113 | good = (strcmp (expected, result) == 0); | |
114 | ||
115 | return good; | |
116 | } | |
117 | ||
118 | ||
d68171ed | 119 | int |
e25054c4 | 120 | do_test (int argc, char ** argv) |
394f4f17 RM |
121 | { |
122 | char * result; | |
0f888d8e | 123 | int i, errors = 0; |
394f4f17 RM |
124 | char buf[PATH_MAX]; |
125 | ||
126 | getcwd (cwd, sizeof(buf)); | |
127 | cwd_len = strlen (cwd); | |
128 | ||
86187531 UD |
129 | errno = 0; |
130 | if (realpath (NULL, buf) != NULL || errno != EINVAL) | |
131 | { | |
132 | printf ("%s: expected return value NULL and errno set to EINVAL" | |
133 | " for realpath(NULL,...)\n", argv[0]); | |
134 | ++errors; | |
135 | } | |
136 | ||
f7501ae6 UD |
137 | #if 0 |
138 | /* This is now allowed. The test is invalid. */ | |
86187531 UD |
139 | errno = 0; |
140 | if (realpath ("/", NULL) != NULL || errno != EINVAL) | |
141 | { | |
142 | printf ("%s: expected return value NULL and errno set to EINVAL" | |
143 | " for realpath(...,NULL)\n", argv[0]); | |
144 | ++errors; | |
145 | } | |
f7501ae6 | 146 | #endif |
86187531 UD |
147 | |
148 | errno = 0; | |
149 | if (realpath ("", buf) != NULL || errno != ENOENT) | |
150 | { | |
cc3fa755 | 151 | printf ("%s: expected return value NULL and set errno to ENOENT" |
86187531 UD |
152 | " for realpath(\"\",...)\n", argv[0]); |
153 | ++errors; | |
154 | } | |
155 | ||
d68171ed | 156 | for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i) |
394f4f17 RM |
157 | symlink (symlinks[i].value, symlinks[i].name); |
158 | ||
0f888d8e UD |
159 | int has_dir = mkdir ("doesExist", 0777) == 0; |
160 | ||
161 | int fd = has_dir ? creat ("doesExist/someFile", 0777) : -1; | |
394f4f17 | 162 | |
d68171ed | 163 | for (i = 0; i < (int) (sizeof (tests) / sizeof (tests[0])); ++i) |
394f4f17 RM |
164 | { |
165 | buf[0] = '\0'; | |
166 | result = realpath (tests[i].in, buf); | |
167 | ||
168 | if (!check_path (result, tests[i].out)) | |
169 | { | |
170 | printf ("%s: flunked test %d (expected `%s', got `%s')\n", | |
171 | argv[0], i, tests[i].out ? tests[i].out : "NULL", | |
172 | result ? result : "NULL"); | |
173 | ++errors; | |
174 | continue; | |
175 | } | |
176 | ||
177 | if (!check_path (buf, tests[i].out ? tests[i].out : tests[i].resolved)) | |
178 | { | |
179 | printf ("%s: flunked test %d (expected resolved `%s', got `%s')\n", | |
180 | argv[0], i, tests[i].out ? tests[i].out : tests[i].resolved, | |
181 | buf); | |
182 | ++errors; | |
183 | continue; | |
184 | } | |
185 | ||
ec4b0518 | 186 | if (!tests[i].out && errno != tests[i].error) |
394f4f17 RM |
187 | { |
188 | printf ("%s: flunked test %d (expected errno %d, got %d)\n", | |
d68171ed | 189 | argv[0], i, tests[i].error, errno); |
394f4f17 RM |
190 | ++errors; |
191 | continue; | |
192 | } | |
71b1675e UD |
193 | |
194 | char *result2 = realpath (tests[i].in, NULL); | |
195 | if ((result2 == NULL && result != NULL) | |
196 | || (result2 != NULL && strcmp (result, result2) != 0)) | |
197 | { | |
198 | printf ("\ | |
199 | %s: realpath(..., NULL) produced different result than realpath(..., buf): '%s' vs '%s'\n", | |
200 | argv[0], result2, result); | |
201 | ++errors; | |
202 | } | |
203 | free (result2); | |
394f4f17 RM |
204 | } |
205 | ||
206 | getcwd (buf, sizeof(buf)); | |
207 | if (strcmp (buf, cwd)) | |
208 | { | |
209 | printf ("%s: current working directory changed from %s to %s\n", | |
210 | argv[0], cwd, buf); | |
211 | ++errors; | |
212 | } | |
213 | ||
214 | if (fd >= 0) | |
a1260d92 UD |
215 | { |
216 | close (fd); | |
217 | unlink ("doesExist/someFile"); | |
218 | } | |
0f888d8e UD |
219 | |
220 | if (has_dir) | |
221 | rmdir ("doesExist"); | |
394f4f17 | 222 | |
d68171ed | 223 | for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i) |
394f4f17 RM |
224 | unlink (symlinks[i].name); |
225 | ||
d68171ed | 226 | if (errors != 0) |
394f4f17 RM |
227 | { |
228 | printf ("%d errors.\n", errors); | |
e25054c4 | 229 | return EXIT_FAILURE; |
394f4f17 | 230 | } |
d68171ed UD |
231 | |
232 | puts ("No errors."); | |
233 | return EXIT_SUCCESS; | |
394f4f17 | 234 | } |