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9ff9add9 | 1 | /* Test of getcwd function. |
2b778ceb | 2 | Copyright (C) 2000-2021 Free Software Foundation, Inc. |
9ff9add9 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000. | |
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. | |
9ff9add9 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. |
9ff9add9 | 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/>. */ |
9ff9add9 UD |
19 | |
20 | #include <errno.h> | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <unistd.h> | |
25 | #include <sys/param.h> | |
978e8ac3 | 26 | #include <libc-diag.h> |
9ff9add9 UD |
27 | |
28 | ||
29 | #define TEST_FUNCTION do_test () | |
30 | static int | |
31 | do_test (void) | |
32 | { | |
33 | char thepath[4096]; /* Yes, this limits the environment this test | |
34 | can run it but I honestly don't care about | |
35 | people which have this problem. */ | |
36 | char *bufs[10]; | |
37 | size_t lens[10]; | |
38 | size_t sbs; | |
57b36a0a | 39 | size_t len, i; |
9ff9add9 UD |
40 | |
41 | if (getcwd (thepath, sizeof thepath) == NULL) | |
42 | { | |
43 | if (errno == ERANGE) | |
44 | /* The path is too long, skip all tests. */ | |
45 | return 0; | |
46 | ||
47 | puts ("getcwd (thepath, sizeof thepath) failed"); | |
48 | return 1; | |
49 | } | |
50 | len = strlen (thepath); | |
51 | ||
52 | sbs = 1; | |
53 | while (sbs < len + 1) | |
54 | sbs <<= 1; | |
55 | ||
56 | for (i = 0; i < 4; ++i) | |
57 | { | |
58 | lens[i] = sbs; | |
59 | bufs[i] = (char *) malloc (sbs); | |
60 | } | |
61 | ||
978e8ac3 MS |
62 | /* Avoid warnings about the first argument being null when the second |
63 | is nonzero. */ | |
64 | DIAG_PUSH_NEEDS_COMMENT; | |
65 | DIAG_IGNORE_NEEDS_COMMENT (10.1, "-Wnonnull"); | |
9ff9add9 | 66 | bufs[i] = getcwd (NULL, sbs); |
978e8ac3 MS |
67 | DIAG_POP_NEEDS_COMMENT; |
68 | ||
9ff9add9 UD |
69 | lens[i] = sbs; |
70 | if (bufs[i] == NULL) | |
71 | { | |
72 | puts ("getcwd (NULL, sbs) failed"); | |
73 | return 1; | |
74 | } | |
75 | ++i; | |
76 | ||
77 | for (; i < 10; sbs >>= 1, ++i) | |
78 | { | |
79 | bufs[i] = (char *) malloc (MAX (1, sbs)); | |
80 | lens[i] = sbs; | |
81 | } | |
82 | ||
83 | /* Before we test the result write something in the memory to see | |
84 | whether the allocation went right. */ | |
85 | for (i = 0; i < 10; ++i) | |
86 | if (i != 4 && bufs[i] != NULL) | |
87 | memset (bufs[i], '\xff', lens[i]); | |
88 | ||
89 | if (strcmp (thepath, bufs[4]) != 0) | |
90 | { | |
91 | printf ("\ | |
92 | getcwd (NULL, sbs) = \"%s\", getcwd (thepath, sizeof thepath) = \"%s\"\n", | |
93 | bufs[4], thepath); | |
94 | return 1; | |
95 | } | |
96 | ||
97 | /* Now overwrite all buffers to see that getcwd allocated the buffer | |
98 | of right size. */ | |
99 | for (i = 0; i < 10; ++i) | |
100 | memset (bufs[i], i, lens[i]); | |
101 | ||
102 | for (i = 0; i < 10; ++i) | |
103 | free (bufs[i]); | |
104 | ||
105 | /* Test whether the function signals success despite the buffer | |
978e8ac3 MS |
106 | being too small. |
107 | Avoid warnings about the first argument being null when the second | |
108 | is nonzero. */ | |
109 | DIAG_PUSH_NEEDS_COMMENT; | |
110 | DIAG_IGNORE_NEEDS_COMMENT (10.1, "-Wnonnull"); | |
9ff9add9 UD |
111 | if (getcwd (NULL, len) != NULL) |
112 | { | |
113 | puts ("getcwd (NULL, len) didn't failed"); | |
114 | return 1; | |
115 | } | |
978e8ac3 | 116 | DIAG_POP_NEEDS_COMMENT; |
9ff9add9 UD |
117 | |
118 | bufs[0] = malloc (len); | |
119 | bufs[1] = malloc (len); | |
120 | bufs[2] = malloc (len); | |
121 | if (bufs[1] != NULL) | |
122 | { | |
123 | if (getcwd (bufs[1], len) != NULL) | |
124 | { | |
125 | puts ("getcwd (bufs[1], len) didn't failed"); | |
126 | return 1; | |
127 | } | |
128 | free (bufs[0]); | |
129 | free (bufs[1]); | |
130 | free (bufs[2]); | |
131 | } | |
132 | ||
ca41028b | 133 | memset (thepath, '\xfe', sizeof (thepath)); |
9ff9add9 UD |
134 | if (getcwd (thepath, len) != NULL) |
135 | { | |
136 | puts ("getcwd (thepath, len) didn't failed"); | |
137 | return 1; | |
138 | } | |
139 | ||
ca41028b UD |
140 | for (i = len; i < sizeof thepath; ++i) |
141 | if (thepath[i] != '\xfe') | |
142 | { | |
143 | puts ("thepath[i] != '\xfe'"); | |
144 | return 1; | |
145 | } | |
146 | ||
978e8ac3 MS |
147 | /* Now test handling of correctly sized buffers. |
148 | Again. avoid warnings about the first argument being null when | |
149 | the second is nonzero. */ | |
150 | DIAG_PUSH_NEEDS_COMMENT; | |
151 | DIAG_IGNORE_NEEDS_COMMENT (10.1, "-Wnonnull"); | |
9ff9add9 UD |
152 | bufs[0] = getcwd (NULL, len + 1); |
153 | if (bufs[0] == NULL) | |
154 | { | |
155 | puts ("getcwd (NULL, len + 1) failed"); | |
156 | return 1; | |
157 | } | |
978e8ac3 | 158 | DIAG_POP_NEEDS_COMMENT; |
9ff9add9 UD |
159 | free (bufs[0]); |
160 | ||
161 | memset (thepath, '\xff', sizeof thepath); | |
162 | if (getcwd (thepath, len + 1) == NULL) | |
163 | { | |
164 | puts ("getcwd (thepath, len + 1) failed"); | |
165 | return 1; | |
166 | } | |
167 | ||
168 | for (i = len + 1; i < sizeof thepath; ++i) | |
169 | if (thepath[i] != '\xff') | |
170 | { | |
9a2d7205 | 171 | printf ("thepath[%zd] != '\xff'\n", i); |
9ff9add9 UD |
172 | return 1; |
173 | } | |
174 | ||
175 | puts ("everything OK"); | |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
180 | #include "../test-skeleton.c" |