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-rw-r--r--io/tst-mkdirat.c162
1 files changed, 162 insertions, 0 deletions
diff --git a/io/tst-mkdirat.c b/io/tst-mkdirat.c
new file mode 100644
index 0000000000..3efa4622ef
--- /dev/null
+++ b/io/tst-mkdirat.c
@@ -0,0 +1,162 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+
+static void prepare (void);
+#define PREPARE(argc, argv) prepare ()
+
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+#include "../test-skeleton.c"
+
+static int dir_fd;
+
+static void
+prepare (void)
+{
+ size_t test_dir_len = strlen (test_dir);
+ static const char dir_name[] = "/tst-mkdirat.XXXXXX";
+
+ size_t dirbuflen = test_dir_len + sizeof (dir_name);
+ char *dirbuf = malloc (dirbuflen);
+ if (dirbuf == NULL)
+ {
+ puts ("out of memory");
+ exit (1);
+ }
+
+ snprintf (dirbuf, dirbuflen, "%s%s", test_dir, dir_name);
+ if (mkdtemp (dirbuf) == NULL)
+ {
+ puts ("cannot create temporary directory");
+ exit (1);
+ }
+
+ add_temp_file (dirbuf);
+
+ dir_fd = open (dirbuf, O_RDONLY | O_DIRECTORY);
+ if (dir_fd == -1)
+ {
+ puts ("cannot open directory");
+ exit (1);
+ }
+}
+
+
+static int
+do_test (void)
+{
+ /* fdopendir takes over the descriptor, make a copy. */
+ int dupfd = dup (dir_fd);
+ if (dupfd == -1)
+ {
+ puts ("dup failed");
+ return 1;
+ }
+ if (lseek (dupfd, 0, SEEK_SET) != 0)
+ {
+ puts ("1st lseek failed");
+ return 1;
+ }
+
+ /* The directory should be empty safe the . and .. files. */
+ DIR *dir = fdopendir (dupfd);
+ if (dir == NULL)
+ {
+ puts ("fdopendir failed");
+ return 1;
+ }
+ struct dirent64 *d;
+ while ((d = readdir64 (dir)) != NULL)
+ if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+ {
+ printf ("temp directory contains file \"%s\"\n", d->d_name);
+ return 1;
+ }
+ closedir (dir);
+
+ /* Create a new directory. */
+ int e = mkdirat (dir_fd, "some-dir", 0777);
+ if (e == -1)
+ {
+ if (errno == ENOSYS)
+ {
+ puts ("*at functions not supported");
+ return 0;
+ }
+
+ puts ("directory creation failed");
+ return 1;
+ }
+
+ struct stat64 st1;
+ if (fstatat64 (dir_fd, "some-dir", &st1, 0) != 0)
+ {
+ puts ("fstat64 failed");
+ return 1;
+ }
+ if (!S_ISDIR (st1.st_mode))
+ {
+ puts ("mkdirat did not create a directory");
+ return 1;
+ }
+
+ dupfd = dup (dir_fd);
+ if (dupfd == -1)
+ {
+ puts ("dup failed");
+ return 1;
+ }
+ if (lseek (dupfd, 0, SEEK_SET) != 0)
+ {
+ puts ("1st lseek failed");
+ return 1;
+ }
+
+ dir = fdopendir (dupfd);
+ if (dir == NULL)
+ {
+ puts ("2nd fdopendir failed");
+ return 1;
+ }
+ bool has_some_dir = false;
+ while ((d = readdir64 (dir)) != NULL)
+ if (strcmp (d->d_name, "some-dir") == 0)
+ {
+ has_some_dir = true;
+#ifdef _DIRENT_HAVE_D_TYPE
+ if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
+ {
+ puts ("d_type for some-dir wrong");
+ return 1;
+ }
+#endif
+ }
+ else if (strcmp (d->d_name, ".") != 0 && strcmp (d->d_name, "..") != 0)
+ {
+ printf ("temp directory contains file \"%s\"\n", d->d_name);
+ return 1;
+ }
+ closedir (dir);
+
+ if (!has_some_dir)
+ {
+ puts ("some-dir not in directory list");
+ return 1;
+ }
+
+ if (unlinkat (dir_fd, "some-dir", AT_REMOVEDIR) != 0)
+ {
+ puts ("unlinkat failed");
+ return 1;
+ }
+
+ close (dir_fd);
+
+ return 0;
+}