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Commit | Line | Data |
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d15b99ac RM |
1 | /* Test for faccessat function. */ |
2 | ||
3 | #include <dirent.h> | |
4 | #include <fcntl.h> | |
5 | #include <stdio.h> | |
6 | #include <stdlib.h> | |
7 | #include <string.h> | |
8 | #include <unistd.h> | |
9 | ||
10 | ||
11 | static void prepare (void); | |
12 | #define PREPARE(argc, argv) prepare () | |
13 | ||
14 | static int do_test (void); | |
15 | #define TEST_FUNCTION do_test () | |
16 | ||
17 | #include "../test-skeleton.c" | |
18 | ||
19 | static int dir_fd; | |
20 | ||
21 | static void | |
22 | prepare (void) | |
23 | { | |
24 | size_t test_dir_len = strlen (test_dir); | |
25 | static const char dir_name[] = "/tst-faccessat.XXXXXX"; | |
26 | ||
27 | size_t dirbuflen = test_dir_len + sizeof (dir_name); | |
28 | char *dirbuf = malloc (dirbuflen); | |
29 | if (dirbuf == NULL) | |
30 | { | |
31 | puts ("out of memory"); | |
32 | exit (1); | |
33 | } | |
34 | ||
35 | snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name); | |
36 | if (mkdtemp (dirbuf) == NULL) | |
37 | { | |
38 | puts ("cannot create temporary directory"); | |
39 | exit (1); | |
40 | } | |
41 | ||
42 | add_temp_file (dirbuf); | |
43 | ||
44 | dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY); | |
45 | if (dir_fd == -1) | |
46 | { | |
47 | puts ("cannot open directory"); | |
48 | exit (1); | |
49 | } | |
50 | } | |
51 | ||
52 | ||
53 | static int | |
54 | do_test (void) | |
55 | { | |
56 | /* fdopendir takes over the descriptor, make a copy. */ | |
57 | int dupfd = dup (dir_fd); | |
58 | if (dupfd == -1) | |
59 | { | |
60 | puts ("dup failed"); | |
61 | return 1; | |
62 | } | |
63 | if (lseek (dupfd, 0, SEEK_SET) != 0) | |
64 | { | |
65 | puts ("1st lseek failed"); | |
66 | return 1; | |
67 | } | |
68 | ||
69 | /* The directory should be empty save the . and .. files. */ | |
70 | DIR *dir = fdopendir (dupfd); | |
71 | if (dir == NULL) | |
72 | { | |
73 | puts ("fdopendir failed"); | |
74 | return 1; | |
75 | } | |
76 | struct dirent64 *d; | |
77 | while ((d = readdir64 (dir)) != NULL) | |
78 | if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0) | |
79 | { | |
80 | printf ("temp directory contains file \"%s\"\n", d->d_name); | |
81 | return 1; | |
82 | } | |
83 | closedir (dir); | |
84 | ||
85 | /* Try to create a file. */ | |
86 | int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666); | |
87 | if (fd == -1) | |
88 | { | |
89 | if (errno == ENOSYS) | |
90 | { | |
91 | puts ("*at functions not supported"); | |
92 | return 0; | |
93 | } | |
94 | ||
95 | puts ("file creation failed"); | |
96 | return 1; | |
97 | } | |
98 | write (fd, "hello", 5); | |
99 | puts ("file created"); | |
100 | ||
bdc7e223 UD |
101 | /* Before closing the file, try using this file descriptor to open |
102 | another file. This must fail. */ | |
103 | if (faccessat (fd, "should-not-work", F_OK, AT_EACCESS) != -1) | |
104 | { | |
105 | puts ("faccessat using descriptor for normal file worked"); | |
106 | return 1; | |
107 | } | |
108 | if (errno != ENOTDIR) | |
109 | { | |
110 | puts ("\ | |
111 | error for faccessat using descriptor for normal file not ENOTDIR "); | |
112 | return 1; | |
113 | } | |
114 | ||
d15b99ac RM |
115 | close (fd); |
116 | ||
117 | int result = 0; | |
118 | ||
119 | if (faccessat (dir_fd, "some-file", F_OK, AT_EACCESS)) | |
120 | { | |
121 | printf ("faccessat F_OK: %m\n"); | |
122 | result = 1; | |
123 | } | |
124 | if (faccessat (dir_fd, "some-file", W_OK, AT_EACCESS)) | |
125 | { | |
126 | printf ("faccessat W_OK: %m\n"); | |
127 | result = 1; | |
128 | } | |
129 | ||
130 | errno = 0; | |
131 | if (faccessat (dir_fd, "some-file", X_OK, AT_EACCESS) == 0 | |
132 | || errno != EACCES) | |
133 | { | |
134 | printf ("faccessat X_OK on nonexecutable: %m\n"); | |
135 | result = 1; | |
136 | } | |
137 | ||
138 | if (fchmodat (dir_fd, "some-file", 0400, 0) != 0) | |
139 | { | |
140 | printf ("fchownat failed: %m\n"); | |
141 | return 1; | |
142 | } | |
143 | ||
144 | if (faccessat (dir_fd, "some-file", R_OK, AT_EACCESS)) | |
145 | { | |
146 | printf ("faccessat R_OK: %m\n"); | |
147 | result = 1; | |
148 | } | |
149 | ||
150 | errno = 0; | |
151 | if (faccessat (dir_fd, "some-file", W_OK, AT_EACCESS) == 0 | |
edbaf668 | 152 | ? (geteuid () != 0) : (errno != EACCES)) |
d15b99ac RM |
153 | { |
154 | printf ("faccessat W_OK on unwritable file: %m\n"); | |
155 | result = 1; | |
156 | } | |
157 | ||
bdc7e223 UD |
158 | /* Create a file descriptor which is closed again right away. */ |
159 | int dir_fd2 = dup (dir_fd); | |
160 | if (dir_fd2 == -1) | |
161 | { | |
162 | puts ("dup failed"); | |
163 | return 1; | |
164 | } | |
165 | close (dir_fd2); | |
166 | ||
167 | /* With the file descriptor closed the next call must fail. */ | |
168 | if (faccessat (dir_fd2, "some-file", F_OK, AT_EACCESS) != -1) | |
169 | { | |
170 | puts ("faccessat using closed descriptor succeeded"); | |
171 | return 1; | |
172 | } | |
173 | if (errno != EBADF) | |
174 | { | |
175 | puts ("faccessat using closed descriptor did not set EBADF"); | |
176 | return 1; | |
177 | } | |
178 | ||
179 | /* Same with a non-existing file. */ | |
180 | if (faccessat (dir_fd2, "non-existing-file", F_OK, AT_EACCESS) != -1) | |
181 | { | |
182 | puts ("2nd faccessat using closed descriptor succeeded"); | |
183 | return 1; | |
184 | } | |
185 | if (errno != EBADF) | |
186 | { | |
187 | puts ("2nd faccessat using closed descriptor did not set EBADF"); | |
188 | return 1; | |
189 | } | |
190 | ||
d15b99ac RM |
191 | if (unlinkat (dir_fd, "some-file", 0) != 0) |
192 | { | |
193 | puts ("unlinkat failed"); | |
194 | result = 1; | |
195 | } | |
196 | ||
197 | close (dir_fd); | |
198 | ||
bdc7e223 UD |
199 | fd = faccessat (-1, "some-file", F_OK, AT_EACCESS); |
200 | if (fd != -1) | |
201 | { | |
202 | puts ("faccessat using -1 descriptor succeeded"); | |
203 | return 1; | |
204 | } | |
205 | if (errno != EBADF) | |
206 | { | |
207 | puts ("faccessat using -1 descriptor did not set EBADF"); | |
208 | return 1; | |
209 | } | |
210 | ||
d15b99ac RM |
211 | return result; |
212 | } |