1 | /* Test glob compat symbol which avoid call GLOB_ALTDIRFUNC/gl_lstat. |
2 | Copyright (C) 2017-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <glob.h> |
20 | #include <errno.h> |
21 | #include <stdlib.h> |
22 | #include <string.h> |
23 | #include <sys/types.h> |
24 | #include <dirent.h> |
25 | #include <sys/types.h> |
26 | #include <sys/stat.h> |
27 | #include <unistd.h> |
28 | #include <stdbool.h> |
29 | #include <stdio.h> |
30 | |
31 | #include <shlib-compat.h> |
32 | #include <support/check.h> |
33 | #include <support/temp_file.h> |
34 | |
35 | __typeof (glob) glob; |
36 | /* On alpha glob exists in version GLIBC_2_0, GLIBC_2_1, and GLIBC_2_27. |
37 | This test needs to access the version prior to GLIBC_2_27, which is |
38 | GLIBC_2_1 on alpha, GLIBC_2_0 elsewhere. */ |
39 | #ifdef __alpha__ |
40 | compat_symbol_reference (libc, glob, glob, GLIBC_2_1); |
41 | #else |
42 | compat_symbol_reference (libc, glob, glob, GLIBC_2_0); |
43 | #endif |
44 | |
45 | /* Compat glob should not call gl_lstat since for some old binaries it |
46 | might be unitialized (for instance GNUmake). Check if it is indeed |
47 | not called. */ |
48 | static bool stat_called; |
49 | static bool lstat_called; |
50 | |
51 | static struct |
52 | { |
53 | const char *name; |
54 | int level; |
55 | int type; |
56 | } filesystem[] = |
57 | { |
58 | { "." , 1, DT_DIR }, |
59 | { ".." , 1, DT_DIR }, |
60 | { "dir1lev1" , 1, DT_UNKNOWN }, |
61 | { "." , 2, DT_DIR }, |
62 | { ".." , 2, DT_DIR }, |
63 | { "file1lev2" , 2, DT_REG }, |
64 | { "file2lev2" , 2, DT_REG }, |
65 | }; |
66 | static const size_t nfiles = sizeof (filesystem) / sizeof (filesystem [0]); |
67 | |
68 | typedef struct |
69 | { |
70 | int level; |
71 | int idx; |
72 | struct dirent d; |
73 | char room_for_dirent[NAME_MAX]; |
74 | } my_DIR; |
75 | |
76 | static long int |
77 | find_file (const char *s) |
78 | { |
79 | int level = 1; |
80 | long int idx = 0; |
81 | |
82 | while (s[0] == '/') |
83 | { |
84 | if (s[1] == '\0') |
85 | { |
86 | s = "." ; |
87 | break; |
88 | } |
89 | ++s; |
90 | } |
91 | |
92 | if (strcmp (s, "." ) == 0) |
93 | return 0; |
94 | |
95 | if (s[0] == '.' && s[1] == '/') |
96 | s += 2; |
97 | |
98 | while (*s != '\0') |
99 | { |
100 | char *endp = strchrnul (s: s, c: '/'); |
101 | |
102 | while (idx < nfiles && filesystem[idx].level >= level) |
103 | { |
104 | if (filesystem[idx].level == level |
105 | && memcmp (s, filesystem[idx].name, endp - s) == 0 |
106 | && filesystem[idx].name[endp - s] == '\0') |
107 | break; |
108 | ++idx; |
109 | } |
110 | |
111 | if (idx == nfiles || filesystem[idx].level < level) |
112 | { |
113 | errno = ENOENT; |
114 | return -1; |
115 | } |
116 | |
117 | if (*endp == '\0') |
118 | return idx + 1; |
119 | |
120 | if (filesystem[idx].type != DT_DIR |
121 | && (idx + 1 >= nfiles |
122 | || filesystem[idx].level >= filesystem[idx + 1].level)) |
123 | { |
124 | errno = ENOTDIR; |
125 | return -1; |
126 | } |
127 | |
128 | ++idx; |
129 | |
130 | s = endp + 1; |
131 | ++level; |
132 | } |
133 | |
134 | errno = ENOENT; |
135 | return -1; |
136 | } |
137 | |
138 | static void * |
139 | my_opendir (const char *s) |
140 | { |
141 | long int idx = find_file (s); |
142 | if (idx == -1 || filesystem[idx].type != DT_DIR) |
143 | return NULL; |
144 | |
145 | my_DIR *dir = malloc (size: sizeof (my_DIR)); |
146 | if (dir == NULL) |
147 | FAIL_EXIT1 ("cannot allocate directory handle" ); |
148 | |
149 | dir->level = filesystem[idx].level; |
150 | dir->idx = idx; |
151 | |
152 | return dir; |
153 | } |
154 | |
155 | static struct dirent * |
156 | my_readdir (void *gdir) |
157 | { |
158 | my_DIR *dir = gdir; |
159 | |
160 | if (dir->idx == -1) |
161 | return NULL; |
162 | |
163 | while (dir->idx < nfiles && filesystem[dir->idx].level > dir->level) |
164 | ++dir->idx; |
165 | |
166 | if (dir->idx == nfiles || filesystem[dir->idx].level < dir->level) |
167 | { |
168 | dir->idx = -1; |
169 | return NULL; |
170 | } |
171 | |
172 | dir->d.d_ino = 1; /* glob should not skip this entry. */ |
173 | |
174 | dir->d.d_type = filesystem[dir->idx].type; |
175 | |
176 | strcpy (dir->d.d_name, filesystem[dir->idx].name); |
177 | |
178 | ++dir->idx; |
179 | |
180 | return &dir->d; |
181 | } |
182 | |
183 | static void |
184 | my_closedir (void *dir) |
185 | { |
186 | free (ptr: dir); |
187 | } |
188 | |
189 | static int |
190 | my_stat (const char *name, struct stat *st) |
191 | { |
192 | stat_called = true; |
193 | |
194 | long int idx = find_file (s: name); |
195 | if (idx == -1) |
196 | return -1; |
197 | |
198 | memset (st, '\0', sizeof (*st)); |
199 | |
200 | if (filesystem[idx].type == DT_UNKNOWN) |
201 | st->st_mode = DTTOIF (idx + 1 < nfiles |
202 | && filesystem[idx].level < filesystem[idx + 1].level |
203 | ? DT_DIR : DT_REG) | 0777; |
204 | else |
205 | st->st_mode = DTTOIF (filesystem[idx].type) | 0777; |
206 | return 0; |
207 | } |
208 | |
209 | static int |
210 | my_lstat (const char *name, struct stat *st) |
211 | { |
212 | lstat_called = true; |
213 | |
214 | long int idx = find_file (s: name); |
215 | if (idx == -1) |
216 | return -1; |
217 | |
218 | memset (st, '\0', sizeof (*st)); |
219 | |
220 | if (filesystem[idx].type == DT_UNKNOWN) |
221 | st->st_mode = DTTOIF (idx + 1 < nfiles |
222 | && filesystem[idx].level < filesystem[idx + 1].level |
223 | ? DT_DIR : DT_REG) | 0777; |
224 | else |
225 | st->st_mode = DTTOIF (filesystem[idx].type) | 0777; |
226 | return 0; |
227 | } |
228 | |
229 | static int |
230 | do_test (void) |
231 | { |
232 | glob_t gl; |
233 | |
234 | memset (&gl, '\0', sizeof (gl)); |
235 | |
236 | gl.gl_closedir = my_closedir; |
237 | gl.gl_readdir = my_readdir; |
238 | gl.gl_opendir = my_opendir; |
239 | gl.gl_lstat = my_lstat; |
240 | gl.gl_stat = my_stat; |
241 | |
242 | int flags = GLOB_ALTDIRFUNC; |
243 | |
244 | stat_called = false; |
245 | lstat_called = false; |
246 | |
247 | TEST_VERIFY_EXIT (glob ("*/file1lev2" , flags, NULL, &gl) == 0); |
248 | TEST_VERIFY_EXIT (gl.gl_pathc == 1); |
249 | TEST_VERIFY_EXIT (strcmp (gl.gl_pathv[0], "dir1lev1/file1lev2" ) == 0); |
250 | |
251 | TEST_VERIFY_EXIT (stat_called == true); |
252 | TEST_VERIFY_EXIT (lstat_called == false); |
253 | |
254 | return 0; |
255 | } |
256 | |
257 | #include <support/test-driver.c> |
258 | |