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9ff9add9 | 1 | /* Test of getcwd function. |
688903eb | 2 | Copyright (C) 2000-2018 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 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://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> | |
26 | ||
27 | ||
28 | #define TEST_FUNCTION do_test () | |
29 | static int | |
30 | do_test (void) | |
31 | { | |
32 | char thepath[4096]; /* Yes, this limits the environment this test | |
33 | can run it but I honestly don't care about | |
34 | people which have this problem. */ | |
35 | char *bufs[10]; | |
36 | size_t lens[10]; | |
37 | size_t sbs; | |
57b36a0a | 38 | size_t len, i; |
9ff9add9 UD |
39 | |
40 | if (getcwd (thepath, sizeof thepath) == NULL) | |
41 | { | |
42 | if (errno == ERANGE) | |
43 | /* The path is too long, skip all tests. */ | |
44 | return 0; | |
45 | ||
46 | puts ("getcwd (thepath, sizeof thepath) failed"); | |
47 | return 1; | |
48 | } | |
49 | len = strlen (thepath); | |
50 | ||
51 | sbs = 1; | |
52 | while (sbs < len + 1) | |
53 | sbs <<= 1; | |
54 | ||
55 | for (i = 0; i < 4; ++i) | |
56 | { | |
57 | lens[i] = sbs; | |
58 | bufs[i] = (char *) malloc (sbs); | |
59 | } | |
60 | ||
61 | bufs[i] = getcwd (NULL, sbs); | |
62 | lens[i] = sbs; | |
63 | if (bufs[i] == NULL) | |
64 | { | |
65 | puts ("getcwd (NULL, sbs) failed"); | |
66 | return 1; | |
67 | } | |
68 | ++i; | |
69 | ||
70 | for (; i < 10; sbs >>= 1, ++i) | |
71 | { | |
72 | bufs[i] = (char *) malloc (MAX (1, sbs)); | |
73 | lens[i] = sbs; | |
74 | } | |
75 | ||
76 | /* Before we test the result write something in the memory to see | |
77 | whether the allocation went right. */ | |
78 | for (i = 0; i < 10; ++i) | |
79 | if (i != 4 && bufs[i] != NULL) | |
80 | memset (bufs[i], '\xff', lens[i]); | |
81 | ||
82 | if (strcmp (thepath, bufs[4]) != 0) | |
83 | { | |
84 | printf ("\ | |
85 | getcwd (NULL, sbs) = \"%s\", getcwd (thepath, sizeof thepath) = \"%s\"\n", | |
86 | bufs[4], thepath); | |
87 | return 1; | |
88 | } | |
89 | ||
90 | /* Now overwrite all buffers to see that getcwd allocated the buffer | |
91 | of right size. */ | |
92 | for (i = 0; i < 10; ++i) | |
93 | memset (bufs[i], i, lens[i]); | |
94 | ||
95 | for (i = 0; i < 10; ++i) | |
96 | free (bufs[i]); | |
97 | ||
98 | /* Test whether the function signals success despite the buffer | |
99 | being too small. */ | |
100 | if (getcwd (NULL, len) != NULL) | |
101 | { | |
102 | puts ("getcwd (NULL, len) didn't failed"); | |
103 | return 1; | |
104 | } | |
105 | ||
106 | bufs[0] = malloc (len); | |
107 | bufs[1] = malloc (len); | |
108 | bufs[2] = malloc (len); | |
109 | if (bufs[1] != NULL) | |
110 | { | |
111 | if (getcwd (bufs[1], len) != NULL) | |
112 | { | |
113 | puts ("getcwd (bufs[1], len) didn't failed"); | |
114 | return 1; | |
115 | } | |
116 | free (bufs[0]); | |
117 | free (bufs[1]); | |
118 | free (bufs[2]); | |
119 | } | |
120 | ||
ca41028b | 121 | memset (thepath, '\xfe', sizeof (thepath)); |
9ff9add9 UD |
122 | if (getcwd (thepath, len) != NULL) |
123 | { | |
124 | puts ("getcwd (thepath, len) didn't failed"); | |
125 | return 1; | |
126 | } | |
127 | ||
ca41028b UD |
128 | for (i = len; i < sizeof thepath; ++i) |
129 | if (thepath[i] != '\xfe') | |
130 | { | |
131 | puts ("thepath[i] != '\xfe'"); | |
132 | return 1; | |
133 | } | |
134 | ||
9ff9add9 UD |
135 | /* Now test handling of correctly sized buffers. */ |
136 | bufs[0] = getcwd (NULL, len + 1); | |
137 | if (bufs[0] == NULL) | |
138 | { | |
139 | puts ("getcwd (NULL, len + 1) failed"); | |
140 | return 1; | |
141 | } | |
142 | free (bufs[0]); | |
143 | ||
144 | memset (thepath, '\xff', sizeof thepath); | |
145 | if (getcwd (thepath, len + 1) == NULL) | |
146 | { | |
147 | puts ("getcwd (thepath, len + 1) failed"); | |
148 | return 1; | |
149 | } | |
150 | ||
151 | for (i = len + 1; i < sizeof thepath; ++i) | |
152 | if (thepath[i] != '\xff') | |
153 | { | |
9a2d7205 | 154 | printf ("thepath[%zd] != '\xff'\n", i); |
9ff9add9 UD |
155 | return 1; |
156 | } | |
157 | ||
158 | puts ("everything OK"); | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | #include "../test-skeleton.c" |