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1 | #include <dirent.h> | |
2 | #include <fcntl.h> | |
3 | #include <stdio.h> | |
4 | #include <stdlib.h> | |
5 | #include <string.h> | |
6 | #include <unistd.h> | |
7 | #include <sys/stat.h> | |
8 | ||
9 | #include <support/xunistd.h> | |
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-renameat.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 safe 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 | xwrite (fd, "hello", 5); | |
99 | puts ("file created"); | |
100 | ||
101 | struct stat64 st1; | |
102 | if (fstat64 (fd, &st1) != 0) | |
103 | { | |
104 | puts ("fstat64 failed"); | |
105 | return 1; | |
106 | } | |
107 | ||
108 | /* Using a descriptor for a normal file must fail. */ | |
109 | if (renameat (fd, "some-file", dir_fd, "another-file") == 0) | |
110 | { | |
111 | puts ("renameat with normal file descriptor succeeded"); | |
112 | return 1; | |
113 | } | |
114 | if (errno != ENOTDIR) | |
115 | { | |
116 | puts ("error for renameat with normal file descriptor not ENOTDIR"); | |
117 | return 1; | |
118 | } | |
119 | ||
120 | if (renameat (dir_fd, "some-file", fd, "another-file") == 0) | |
121 | { | |
122 | puts ("2nd renameat with normal file descriptor succeeded"); | |
123 | return 1; | |
124 | } | |
125 | if (errno != ENOTDIR) | |
126 | { | |
127 | puts ("error for 2nd renameat with normal file descriptor not ENOTDIR"); | |
128 | return 1; | |
129 | } | |
130 | ||
131 | close (fd); | |
132 | ||
133 | if (renameat (dir_fd, "some-file", dir_fd, "another-file") != 0) | |
134 | { | |
135 | puts ("renameat failed"); | |
136 | return 1; | |
137 | } | |
138 | ||
139 | struct stat64 st2; | |
140 | if (fstatat64 (dir_fd, "some-file", &st2, 0) == 0) | |
141 | { | |
142 | puts ("fstatat64 succeeded"); | |
143 | return 1; | |
144 | } | |
145 | if (errno != ENOENT) | |
146 | { | |
147 | puts ("fstatat64 did not fail with ENOENT"); | |
148 | return 1; | |
149 | } | |
150 | ||
151 | if (fstatat64 (dir_fd, "another-file", &st2, 0) != 0) | |
152 | { | |
153 | puts ("2nd fstatat64 failed"); | |
154 | return 1; | |
155 | } | |
156 | ||
157 | if (st1.st_dev != st2.st_dev | |
158 | || st1.st_ino != st2.st_ino | |
159 | || st1.st_size != st2.st_size) | |
160 | { | |
161 | puts ("stat results do not match"); | |
162 | return 1; | |
163 | } | |
164 | ||
165 | /* Create a file descriptor which is closed again right away. */ | |
166 | int dir_fd2 = dup (dir_fd); | |
167 | if (dir_fd2 == -1) | |
168 | { | |
169 | puts ("dup failed"); | |
170 | return 1; | |
171 | } | |
172 | close (dir_fd2); | |
173 | ||
174 | if (renameat (dir_fd2, "another-file", dir_fd, "some-file") == 0) | |
175 | { | |
176 | puts ("renameat with closed file descriptor succeeded"); | |
177 | return 1; | |
178 | } | |
179 | if (errno != EBADF) | |
180 | { | |
181 | puts ("error for renameat with closed file descriptor not EBADF"); | |
182 | return 1; | |
183 | } | |
184 | ||
185 | if (renameat (dir_fd, "another-file", dir_fd2, "some-file") == 0) | |
186 | { | |
187 | puts ("2nd renameat with closed file descriptor succeeded"); | |
188 | return 1; | |
189 | } | |
190 | if (errno != EBADF) | |
191 | { | |
192 | puts ("error for 2nd renameat with closed file descriptor not EBADF"); | |
193 | return 1; | |
194 | } | |
195 | ||
196 | if (unlinkat (dir_fd, "another-file", 0) != 0) | |
197 | { | |
198 | puts ("unlinkat failed"); | |
199 | return 1; | |
200 | } | |
201 | ||
202 | if (renameat (-1, "another-file", dir_fd, "some-file") == 0) | |
203 | { | |
204 | puts ("renameat with invalid file descriptor succeeded"); | |
205 | return 1; | |
206 | } | |
207 | if (errno != EBADF) | |
208 | { | |
209 | puts ("error for renameat with invalid file descriptor not EBADF"); | |
210 | return 1; | |
211 | } | |
212 | ||
213 | if (renameat (dir_fd, "another-file", -1, "some-file") == 0) | |
214 | { | |
215 | puts ("2nd renameat with invalid file descriptor succeeded"); | |
216 | return 1; | |
217 | } | |
218 | if (errno != EBADF) | |
219 | { | |
220 | puts ("error for 2nd renameat with invalid file descriptor not EBADF"); | |
221 | return 1; | |
222 | } | |
223 | ||
224 | close (dir_fd); | |
225 | ||
226 | return 0; | |
227 | } |