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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 | ||
10 | static void prepare (void); | |
11 | #define PREPARE(argc, argv) prepare () | |
12 | ||
13 | static int do_test (void); | |
14 | #define TEST_FUNCTION do_test () | |
15 | ||
16 | #include "../test-skeleton.c" | |
17 | ||
18 | static int dir_fd; | |
19 | ||
20 | static void | |
21 | prepare (void) | |
22 | { | |
23 | size_t test_dir_len = strlen (test_dir); | |
24 | static const char dir_name[] = "/tst-renameat.XXXXXX"; | |
25 | ||
26 | size_t dirbuflen = test_dir_len + sizeof (dir_name); | |
27 | char *dirbuf = malloc (dirbuflen); | |
28 | if (dirbuf == NULL) | |
29 | { | |
30 | puts ("out of memory"); | |
31 | exit (1); | |
32 | } | |
33 | ||
34 | snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name); | |
35 | if (mkdtemp (dirbuf) == NULL) | |
36 | { | |
37 | puts ("cannot create temporary directory"); | |
38 | exit (1); | |
39 | } | |
40 | ||
41 | add_temp_file (dirbuf); | |
42 | ||
43 | dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY); | |
44 | if (dir_fd == -1) | |
45 | { | |
46 | puts ("cannot open directory"); | |
47 | exit (1); | |
48 | } | |
49 | } | |
50 | ||
51 | ||
52 | static int | |
53 | do_test (void) | |
54 | { | |
55 | /* fdopendir takes over the descriptor, make a copy. */ | |
56 | int dupfd = dup (dir_fd); | |
57 | if (dupfd == -1) | |
58 | { | |
59 | puts ("dup failed"); | |
60 | return 1; | |
61 | } | |
62 | if (lseek (dupfd, 0, SEEK_SET) != 0) | |
63 | { | |
64 | puts ("1st lseek failed"); | |
65 | return 1; | |
66 | } | |
67 | ||
68 | /* The directory should be empty safe the . and .. files. */ | |
69 | DIR *dir = fdopendir (dupfd); | |
70 | if (dir == NULL) | |
71 | { | |
72 | puts ("fdopendir failed"); | |
73 | return 1; | |
74 | } | |
75 | struct dirent64 *d; | |
76 | while ((d = readdir64 (dir)) != NULL) | |
77 | if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0) | |
78 | { | |
79 | printf ("temp directory contains file \"%s\"\n", d->d_name); | |
80 | return 1; | |
81 | } | |
82 | closedir (dir); | |
83 | ||
84 | /* Try to create a file. */ | |
85 | int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666); | |
86 | if (fd == -1) | |
87 | { | |
88 | if (errno == ENOSYS) | |
89 | { | |
90 | puts ("*at functions not supported"); | |
91 | return 0; | |
92 | } | |
93 | ||
94 | puts ("file creation failed"); | |
95 | return 1; | |
96 | } | |
97 | write (fd, "hello", 5); | |
98 | puts ("file created"); | |
99 | ||
100 | struct stat64 st1; | |
101 | if (fstat64 (fd, &st1) != 0) | |
102 | { | |
103 | puts ("fstat64 failed"); | |
104 | return 1; | |
105 | } | |
106 | ||
107 | /* Using a descriptor for a normal file must fail. */ | |
108 | if (renameat (fd, "some-file", dir_fd, "another-file") == 0) | |
109 | { | |
110 | puts ("renameat with normal file descriptor succeeded"); | |
111 | return 1; | |
112 | } | |
113 | if (errno != ENOTDIR) | |
114 | { | |
115 | puts ("error for renameat with normal file descriptor not ENOTDIR"); | |
116 | return 1; | |
117 | } | |
118 | ||
119 | if (renameat (dir_fd, "some-file", fd, "another-file") == 0) | |
120 | { | |
121 | puts ("2nd renameat with normal file descriptor succeeded"); | |
122 | return 1; | |
123 | } | |
124 | if (errno != ENOTDIR) | |
125 | { | |
126 | puts ("error for 2nd renameat with normal file descriptor not ENOTDIR"); | |
127 | return 1; | |
128 | } | |
129 | ||
130 | close (fd); | |
131 | ||
132 | if (renameat (dir_fd, "some-file", dir_fd, "another-file") != 0) | |
133 | { | |
134 | puts ("renameat failed"); | |
135 | return 1; | |
136 | } | |
137 | ||
138 | struct stat64 st2; | |
139 | if (fstatat64 (dir_fd, "some-file", &st2, 0) == 0) | |
140 | { | |
141 | puts ("fstatat64 succeeded"); | |
142 | return 1; | |
143 | } | |
144 | if (errno != ENOENT) | |
145 | { | |
146 | puts ("fstatat64 did not fail with ENOENT"); | |
147 | return 1; | |
148 | } | |
149 | ||
150 | if (fstatat64 (dir_fd, "another-file", &st2, 0) != 0) | |
151 | { | |
152 | puts ("2nd fstatat64 failed"); | |
153 | return 1; | |
154 | } | |
155 | ||
156 | if (st1.st_dev != st2.st_dev | |
157 | || st1.st_ino != st2.st_ino | |
158 | || st1.st_size != st2.st_size) | |
159 | { | |
160 | puts ("stat results do not match"); | |
161 | return 1; | |
162 | } | |
163 | ||
164 | /* Create a file descriptor which is closed again right away. */ | |
165 | int dir_fd2 = dup (dir_fd); | |
166 | if (dir_fd2 == -1) | |
167 | { | |
168 | puts ("dup failed"); | |
169 | return 1; | |
170 | } | |
171 | close (dir_fd2); | |
172 | ||
173 | if (renameat (dir_fd2, "another-file", dir_fd, "some-file") == 0) | |
174 | { | |
175 | puts ("renameat with closed file descriptor succeeded"); | |
176 | return 1; | |
177 | } | |
178 | if (errno != EBADF) | |
179 | { | |
180 | puts ("error for renameat with closed file descriptor not EBADF"); | |
181 | return 1; | |
182 | } | |
183 | ||
184 | if (renameat (dir_fd, "another-file", dir_fd2, "some-file") == 0) | |
185 | { | |
186 | puts ("2nd renameat with closed file descriptor succeeded"); | |
187 | return 1; | |
188 | } | |
189 | if (errno != EBADF) | |
190 | { | |
191 | puts ("error for 2nd renameat with closed file descriptor not EBADF"); | |
192 | return 1; | |
193 | } | |
194 | ||
195 | if (unlinkat (dir_fd, "another-file", 0) != 0) | |
196 | { | |
197 | puts ("unlinkat failed"); | |
198 | return 1; | |
199 | } | |
200 | ||
201 | if (renameat (-1, "another-file", dir_fd, "some-file") == 0) | |
202 | { | |
203 | puts ("renameat with invalid file descriptor succeeded"); | |
204 | return 1; | |
205 | } | |
206 | if (errno != EBADF) | |
207 | { | |
208 | puts ("error for renameat with invalid file descriptor not EBADF"); | |
209 | return 1; | |
210 | } | |
211 | ||
212 | if (renameat (dir_fd, "another-file", -1, "some-file") == 0) | |
213 | { | |
214 | puts ("2nd renameat with invalid file descriptor succeeded"); | |
215 | return 1; | |
216 | } | |
217 | if (errno != EBADF) | |
218 | { | |
219 | puts ("error for 2nd renameat with invalid file descriptor not EBADF"); | |
220 | return 1; | |
221 | } | |
222 | ||
223 | close (dir_fd); | |
224 | ||
225 | return 0; | |
226 | } |