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394f4f17 | 1 | /* Test program for returning the canonical absolute name of a given file. |
d614a753 | 2 | Copyright (C) 1996-2020 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 | 17 | License along with the GNU C Library; if not, see |
5a82c748 | 18 | <https://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> | |
ceaa9889 | 29 | #include <sys/stat.h> |
394f4f17 | 30 | |
e25054c4 AJ |
31 | /* Prototype for our test function. */ |
32 | extern int do_test (int argc, char *argv[]); | |
33 | #include <test-skeleton.c> | |
34 | ||
a3f4b50b UD |
35 | #ifndef PATH_MAX |
36 | # define PATH_MAX 4096 | |
37 | #endif | |
2303f5fd | 38 | static char cwd[PATH_MAX]; |
394f4f17 RM |
39 | static size_t cwd_len; |
40 | ||
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"}, | |
51 | }; | |
52 | ||
53 | struct { | |
54 | const char * in, * out, * resolved; | |
ec4b0518 | 55 | int error; |
394f4f17 RM |
56 | } tests[] = { |
57 | /* 0 */ | |
58 | {"/", "/"}, | |
59 | {"/////////////////////////////////", "/"}, | |
60 | {"/.././.././.././..///", "/"}, | |
61 | {"/etc", "/etc"}, | |
e25054c4 | 62 | {"/etc/../etc", "/etc"}, |
394f4f17 RM |
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"}, | |
0f888d8e UD |
92 | {"doesExist/.././../stdlib/.", "."}, |
93 | /* 30 */ | |
94 | {"./doesExist/someFile/", 0, "./doesExist/someFile", ENOTDIR}, | |
95 | {"./doesExist/someFile/..", 0, "./doesExist/someFile", ENOTDIR}, | |
394f4f17 RM |
96 | }; |
97 | ||
98 | ||
cf3141a5 | 99 | static int |
394f4f17 RM |
100 | check_path (const char * result, const char * expected) |
101 | { | |
102 | int good; | |
103 | ||
104 | if (!result) | |
105 | return (expected == NULL); | |
106 | ||
107 | if (!expected) | |
108 | return 0; | |
109 | ||
110 | if (expected[0] == '.' && (expected[1] == '/' || expected[1] == '\0')) | |
111 | good = (strncmp (result, cwd, cwd_len) == 0 | |
112 | && strcmp (result + cwd_len, expected + 1) == 0); | |
113 | else | |
114 | good = (strcmp (expected, result) == 0); | |
115 | ||
116 | return good; | |
117 | } | |
118 | ||
119 | ||
d68171ed | 120 | int |
e25054c4 | 121 | do_test (int argc, char ** argv) |
394f4f17 RM |
122 | { |
123 | char * result; | |
0f888d8e | 124 | int i, errors = 0; |
394f4f17 RM |
125 | char buf[PATH_MAX]; |
126 | ||
c4f50205 | 127 | getcwd (cwd, sizeof (buf)); |
394f4f17 RM |
128 | cwd_len = strlen (cwd); |
129 | ||
86187531 UD |
130 | errno = 0; |
131 | if (realpath (NULL, buf) != NULL || errno != EINVAL) | |
132 | { | |
133 | printf ("%s: expected return value NULL and errno set to EINVAL" | |
134 | " for realpath(NULL,...)\n", argv[0]); | |
135 | ++errors; | |
136 | } | |
137 | ||
f7501ae6 UD |
138 | #if 0 |
139 | /* This is now allowed. The test is invalid. */ | |
86187531 UD |
140 | errno = 0; |
141 | if (realpath ("/", NULL) != NULL || errno != EINVAL) | |
142 | { | |
143 | printf ("%s: expected return value NULL and errno set to EINVAL" | |
144 | " for realpath(...,NULL)\n", argv[0]); | |
145 | ++errors; | |
146 | } | |
f7501ae6 | 147 | #endif |
86187531 UD |
148 | |
149 | errno = 0; | |
150 | if (realpath ("", buf) != NULL || errno != ENOENT) | |
151 | { | |
cc3fa755 | 152 | printf ("%s: expected return value NULL and set errno to ENOENT" |
86187531 UD |
153 | " for realpath(\"\",...)\n", argv[0]); |
154 | ++errors; | |
155 | } | |
156 | ||
d68171ed | 157 | for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i) |
394f4f17 RM |
158 | symlink (symlinks[i].value, symlinks[i].name); |
159 | ||
0f888d8e UD |
160 | int has_dir = mkdir ("doesExist", 0777) == 0; |
161 | ||
162 | int fd = has_dir ? creat ("doesExist/someFile", 0777) : -1; | |
394f4f17 | 163 | |
d68171ed | 164 | for (i = 0; i < (int) (sizeof (tests) / sizeof (tests[0])); ++i) |
394f4f17 RM |
165 | { |
166 | buf[0] = '\0'; | |
167 | result = realpath (tests[i].in, buf); | |
168 | ||
169 | if (!check_path (result, tests[i].out)) | |
170 | { | |
171 | printf ("%s: flunked test %d (expected `%s', got `%s')\n", | |
172 | argv[0], i, tests[i].out ? tests[i].out : "NULL", | |
173 | result ? result : "NULL"); | |
174 | ++errors; | |
175 | continue; | |
176 | } | |
177 | ||
178 | if (!check_path (buf, tests[i].out ? tests[i].out : tests[i].resolved)) | |
179 | { | |
180 | printf ("%s: flunked test %d (expected resolved `%s', got `%s')\n", | |
181 | argv[0], i, tests[i].out ? tests[i].out : tests[i].resolved, | |
182 | buf); | |
183 | ++errors; | |
184 | continue; | |
185 | } | |
186 | ||
ec4b0518 | 187 | if (!tests[i].out && errno != tests[i].error) |
394f4f17 RM |
188 | { |
189 | printf ("%s: flunked test %d (expected errno %d, got %d)\n", | |
d68171ed | 190 | argv[0], i, tests[i].error, errno); |
394f4f17 RM |
191 | ++errors; |
192 | continue; | |
193 | } | |
71b1675e UD |
194 | |
195 | char *result2 = realpath (tests[i].in, NULL); | |
196 | if ((result2 == NULL && result != NULL) | |
197 | || (result2 != NULL && strcmp (result, result2) != 0)) | |
198 | { | |
199 | printf ("\ | |
200 | %s: realpath(..., NULL) produced different result than realpath(..., buf): '%s' vs '%s'\n", | |
201 | argv[0], result2, result); | |
202 | ++errors; | |
203 | } | |
204 | free (result2); | |
394f4f17 RM |
205 | } |
206 | ||
c4f50205 | 207 | getcwd (buf, sizeof (buf)); |
394f4f17 RM |
208 | if (strcmp (buf, cwd)) |
209 | { | |
210 | printf ("%s: current working directory changed from %s to %s\n", | |
211 | argv[0], cwd, buf); | |
212 | ++errors; | |
213 | } | |
214 | ||
215 | if (fd >= 0) | |
a1260d92 UD |
216 | { |
217 | close (fd); | |
218 | unlink ("doesExist/someFile"); | |
219 | } | |
0f888d8e UD |
220 | |
221 | if (has_dir) | |
222 | rmdir ("doesExist"); | |
394f4f17 | 223 | |
d68171ed | 224 | for (i = 0; i < (int) (sizeof (symlinks) / sizeof (symlinks[0])); ++i) |
394f4f17 RM |
225 | unlink (symlinks[i].name); |
226 | ||
d68171ed | 227 | if (errors != 0) |
394f4f17 RM |
228 | { |
229 | printf ("%d errors.\n", errors); | |
e25054c4 | 230 | return EXIT_FAILURE; |
394f4f17 | 231 | } |
d68171ed UD |
232 | |
233 | puts ("No errors."); | |
234 | return EXIT_SUCCESS; | |
394f4f17 | 235 | } |