grab some tests from glibc

1 files changed, 80 insertions, 0 deletions

diff --git a/test/misc/tst-seekdir.c b/test/misc/tst-seekdir.c
new file mode 100644
index 000000000..5a2810abd
--- /dev/null
+++ b/test/misc/tst-seekdir.c
@@ -0,0 +1,80 @@
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <dirent.h>
+#include <stdlib.h>
+
+int
+main (int argc, char *argv[])
+{
+  DIR * dirp;
+  long int save3 = 0;
+  long int cur;
+  int i = 0;
+  int result = 0;
+  struct dirent *dp;
+  long int save0;
+  long int rewind;
+
+  dirp = opendir (".");
+  if (dirp == NULL)
+    {
+      printf ("opendir failed: %s\n", strerror(errno));
+      return 1;
+    }
+
+  save0 = telldir (dirp);
+  if (save0 == -1)
+    {
+      printf ("telldir failed: %s\n", strerror(errno));
+      result = 1;
+    }
+
+  for (dp = readdir (dirp); dp != NULL; dp = readdir (dirp))
+    {
+      /* save position 3 (after fourth entry) */
+      if (i++ == 3)
+	save3 = telldir (dirp);
+
+      printf ("%s\n", dp->d_name);
+
+      /* stop at 400 (just to make sure dirp->__offset and dirp->__size are
+	 scrambled */
+      if (i == 400)
+	break;
+    }
+
+  printf ("going back past 4-th entry...\n");
+
+  /* go back to saved entry */
+  seekdir (dirp, save3);
+
+  /* Check whether telldir equals to save3 now.  */
+  cur = telldir (dirp);
+  if (cur != save3)
+    {
+      printf ("seekdir (d, %ld); telldir (d) == %ld\n", save3, cur);
+      result = 1;
+    }
+
+  /* print remaining files (3-last) */
+  for (dp = readdir (dirp); dp != NULL; dp = readdir (dirp))
+    printf ("%s\n", dp->d_name);
+
+  /* Check rewinddir */
+  rewinddir (dirp);
+  rewind = telldir (dirp);
+  if (rewind == -1)
+    {
+      printf ("telldir failed: %s\n", strerror(errno));
+      result = 1;
+    }
+  else if (save0 != rewind)
+    {
+      printf ("rewinddir didn't reset directory stream\n");
+      result = 1;
+    }
+
+  closedir (dirp);
+  return result;
+}