1 /* futimesat basic tests.
2 Copyright (C) 2021-2023 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 <dirent.h>
20 #include <errno.h>
21 #include <fcntl.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <unistd.h>
26 #include <sys/stat.h>
27 #include <sys/time.h>
28
29 #include <support/test-driver.h>
30 #include <support/temp_file.h>
31 #include <support/xunistd.h>
32
33 #ifndef struct_stat
34 # define struct_stat struct stat64
35 # define fstat fstat64
36 # define fstatat fstatat64
37 #endif
38
39 static int dir_fd;
40
41 static void
42 prepare (int argc, char *argv[])
43 {
44 size_t test_dir_len = strlen (test_dir);
45 static const char dir_name[] = "/tst-futimesat.XXXXXX";
46
47 size_t dirbuflen = test_dir_len + sizeof (dir_name);
48 char *dirbuf = malloc (dirbuflen);
49 if (dirbuf == NULL)
50 {
51 puts ("out of memory");
52 exit (1);
53 }
54
55 snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
56 if (mkdtemp (dirbuf) == NULL)
57 {
58 puts ("cannot create temporary directory");
59 exit (1);
60 }
61
62 add_temp_file (dirbuf);
63
64 dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
65 if (dir_fd == -1)
66 {
67 puts ("cannot open directory");
68 exit (1);
69 }
70 }
71 #define PREPARE prepare
72
73 static int
74 do_test (void)
75 {
76 /* fdopendir takes over the descriptor, make a copy. */
77 int dupfd = dup (dir_fd);
78 if (dupfd == -1)
79 {
80 puts ("dup failed");
81 return 1;
82 }
83 if (lseek (dupfd, 0, SEEK_SET) != 0)
84 {
85 puts ("1st lseek failed");
86 return 1;
87 }
88
89 /* The directory should be empty safe the . and .. files. */
90 DIR *dir = fdopendir (dupfd);
91 if (dir == NULL)
92 {
93 puts ("fdopendir failed");
94 return 1;
95 }
96 struct dirent64 *d;
97 while ((d = readdir64 (dir)) != NULL)
98 if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
99 {
100 printf ("temp directory contains file \"%s\"\n", d->d_name);
101 return 1;
102 }
103 closedir (dir);
104
105 /* Try to create a file. */
106 int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
107 if (fd == -1)
108 {
109 if (errno == ENOSYS)
110 {
111 puts ("*at functions not supported");
112 return 0;
113 }
114
115 puts ("file creation failed");
116 return 1;
117 }
118 xwrite (fd, "hello", 5);
119 puts ("file created");
120
121 struct_stat st1;
122 if (fstat (fd, &st1) != 0)
123 {
124 puts ("fstat64 failed");
125 return 1;
126 }
127
128 close (fd);
129
130 struct timeval tv[2];
131 tv[0].tv_sec = st1.st_atime + 1;
132 tv[0].tv_usec = 0;
133 tv[1].tv_sec = st1.st_mtime + 1;
134 tv[1].tv_usec = 0;
135 if (futimesat (dir_fd, "some-file", tv) != 0)
136 {
137 puts ("futimesat failed");
138 return 1;
139 }
140
141 struct_stat st2;
142 if (fstatat (dir_fd, "some-file", &st2, 0) != 0)
143 {
144 puts ("fstatat64 failed");
145 return 1;
146 }
147
148 if (st2.st_mtime != tv[1].tv_sec
149 #ifdef _STATBUF_ST_NSEC
150 || st2.st_mtim.tv_nsec != 0
151 #endif
152 )
153 {
154 puts ("stat shows different mtime");
155 return 1;
156 }
157
158
159 if (unlinkat (dir_fd, "some-file", 0) != 0)
160 {
161 puts ("unlinkat failed");
162 return 1;
163 }
164
165 close (dir_fd);
166
167 return 0;
168 }
169
170 #include <support/test-driver.c>