Fix dlfcn/failtestmod.c warning.
[glibc.git] / io / tst-unlinkat.c
blobc25443c27f114d8b0d3e5031303846336f8d1d29
1 #include <dirent.h>
2 #include <fcntl.h>
3 #include <stdio.h>
4 #include <stdlib.h>
5 #include <string.h>
6 #include <unistd.h>
9 static void prepare (void);
10 #define PREPARE(argc, argv) prepare ()
12 static int do_test (void);
13 #define TEST_FUNCTION do_test ()
15 #include "../test-skeleton.c"
17 static int dir_fd;
19 static void
20 prepare (void)
22 size_t test_dir_len = strlen (test_dir);
23 static const char dir_name[] = "/tst-unlinkat.XXXXXX";
25 size_t dirbuflen = test_dir_len + sizeof (dir_name);
26 char *dirbuf = malloc (dirbuflen);
27 if (dirbuf == NULL)
29 puts ("out of memory");
30 exit (1);
33 snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
34 if (mkdtemp (dirbuf) == NULL)
36 puts ("cannot create temporary directory");
37 exit (1);
40 add_temp_file (dirbuf);
42 dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
43 if (dir_fd == -1)
45 puts ("cannot open directory");
46 exit (1);
51 static int
52 do_test (void)
54 /* fdopendir takes over the descriptor, make a copy. */
55 int dupfd = dup (dir_fd);
56 if (dupfd == -1)
58 puts ("dup failed");
59 return 1;
61 if (lseek (dupfd, 0, SEEK_SET) != 0)
63 puts ("1st lseek failed");
64 return 1;
67 /* The directory should be empty safe the . and .. files. */
68 DIR *dir = fdopendir (dupfd);
69 if (dir == NULL)
71 puts ("fdopendir failed");
72 return 1;
74 struct dirent64 *d;
75 while ((d = readdir64 (dir)) != NULL)
76 if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
78 printf ("temp directory contains file \"%s\"\n", d->d_name);
79 return 1;
81 closedir (dir);
83 /* Try to create a file. */
84 int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
85 if (fd == -1)
87 if (errno == ENOSYS)
89 puts ("*at functions not supported");
90 return 0;
93 puts ("file creation failed");
94 return 1;
96 write (fd, "hello", 5);
97 close (fd);
98 puts ("file created");
100 /* fdopendir takes over the descriptor, make a copy. */
101 dupfd = dup (dir_fd);
102 if (dupfd == -1)
104 puts ("2nd dup failed");
105 return 1;
107 if (lseek (dupfd, 0, SEEK_SET) != 0)
109 puts ("2nd lseek failed");
110 return 1;
113 /* The directory should be empty safe the . and .. files. */
114 dir = fdopendir (dupfd);
115 if (dir == NULL)
117 puts ("2nd fdopendir failed");
118 return 1;
120 bool seen_file = false;
121 while ((d = readdir64 (dir)) != NULL)
122 if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
124 if (strcmp (d->d_name, "some-file") != 0)
126 printf ("temp directory contains file \"%s\"\n", d->d_name);
127 return 1;
130 seen_file = true;
132 closedir (dir);
134 if (!seen_file)
136 puts ("file not created in correct directory");
137 return 1;
140 /* Remove the file now. */
141 if (unlinkat (dir_fd, "some-file", 0) != 0)
143 puts ("unlinkat failed");
144 return 1;
147 /* We won't need dir_fd anymore after this, so use it. */
148 if (lseek (dir_fd, 0, SEEK_SET) != 0)
150 puts ("3rd lseek failed");
151 return 1;
154 /* The directory should be empty safe the . and .. files. */
155 dir = fdopendir (dir_fd);
156 if (dir == NULL)
158 puts ("3rd fdopendir failed");
159 return 1;
161 while ((d = readdir64 (dir)) != NULL)
162 if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
164 if (strcmp (d->d_name, "some-file") == 0)
166 puts ("some-file not removed");
167 return 1;
169 else
171 printf ("temp directory contains file \"%s\"\n", d->d_name);
172 return 1;
175 closedir (dir);
177 return 0;