1 /* Test for faccessat function. */
11 static void prepare (void);
12 #define PREPARE(argc, argv) prepare ()
14 static int do_test (void);
15 #define TEST_FUNCTION do_test ()
17 #include "../test-skeleton.c"
24 size_t test_dir_len = strlen (test_dir);
25 static const char dir_name[] = "/tst-faccessat.XXXXXX";
27 size_t dirbuflen = test_dir_len + sizeof (dir_name);
28 char *dirbuf = malloc (dirbuflen);
31 puts ("out of memory");
35 snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
36 if (mkdtemp (dirbuf) == NULL)
38 puts ("cannot create temporary directory");
42 add_temp_file (dirbuf);
44 dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
47 puts ("cannot open directory");
56 /* fdopendir takes over the descriptor, make a copy. */
57 int dupfd = dup (dir_fd);
63 if (lseek (dupfd, 0, SEEK_SET) != 0)
65 puts ("1st lseek failed");
69 /* The directory should be empty save the . and .. files. */
70 DIR *dir = fdopendir (dupfd);
73 puts ("fdopendir failed");
77 while ((d = readdir64 (dir)) != NULL)
78 if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
80 printf ("temp directory contains file \"%s\"\n", d->d_name);
85 /* Try to create a file. */
86 int fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
91 puts ("*at functions not supported");
95 puts ("file creation failed");
98 write (fd, "hello", 5);
99 puts ("file created");
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)
105 puts ("faccessat using descriptor for normal file worked");
108 if (errno != ENOTDIR)
111 error for faccessat using descriptor for normal file not ENOTDIR ");
119 if (faccessat (dir_fd, "some-file", F_OK, AT_EACCESS))
121 printf ("faccessat F_OK: %m\n");
124 if (faccessat (dir_fd, "some-file", W_OK, AT_EACCESS))
126 printf ("faccessat W_OK: %m\n");
131 if (faccessat (dir_fd, "some-file", X_OK, AT_EACCESS) == 0
134 printf ("faccessat X_OK on nonexecutable: %m\n");
138 if (fchmodat (dir_fd, "some-file", 0400, 0) != 0)
140 printf ("fchownat failed: %m\n");
144 if (faccessat (dir_fd, "some-file", R_OK, AT_EACCESS))
146 printf ("faccessat R_OK: %m\n");
151 if (faccessat (dir_fd, "some-file", W_OK, AT_EACCESS) == 0
152 ? (geteuid () != 0) : (errno != EACCES))
154 printf ("faccessat W_OK on unwritable file: %m\n");
158 /* Create a file descriptor which is closed again right away. */
159 int dir_fd2 = dup (dir_fd);
167 /* With the file descriptor closed the next call must fail. */
168 if (faccessat (dir_fd2, "some-file", F_OK, AT_EACCESS) != -1)
170 puts ("faccessat using closed descriptor succeeded");
175 puts ("faccessat using closed descriptor did not set EBADF");
179 /* Same with a non-existing file. */
180 if (faccessat (dir_fd2, "non-existing-file", F_OK, AT_EACCESS) != -1)
182 puts ("2nd faccessat using closed descriptor succeeded");
187 puts ("2nd faccessat using closed descriptor did not set EBADF");
191 if (unlinkat (dir_fd, "some-file", 0) != 0)
193 puts ("unlinkat failed");
199 fd = faccessat (-1, "some-file", F_OK, AT_EACCESS);
202 puts ("faccessat using -1 descriptor succeeded");
207 puts ("faccessat using -1 descriptor did not set EBADF");