initial import

1 files changed, 95 insertions, 0 deletions

diff --git a/sysdeps/unix/opendir.c b/sysdeps/unix/opendir.c
new file mode 100644
index 0000000000..d03f45e6af
--- /dev/null
+++ b/sysdeps/unix/opendir.c
@@ -0,0 +1,95 @@
+/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include "direct.h"		/* This file defines `struct direct'.  */
+
+/* Open a directory stream on NAME.  */
+DIR *
+DEFUN(opendir, (name), CONST char *name)
+{
+  DIR *dirp;
+  struct stat statbuf;
+  int fd;
+
+  if (name[0] == '\0')
+    {
+      /* POSIX.1-1990 says an empty name gets ENOENT;
+	 but `open' might like it fine.  */
+      errno = ENOENT;
+      return NULL;
+    }
+
+  fd = __open (name, O_RDONLY);
+  if (fd < 0)
+    return NULL;
+
+  if (fcntl (fd, F_SETFD, FD_CLOEXEC) < 0)
+    goto lose;
+
+  if (fstat (fd, &statbuf) < 0)
+    goto lose;
+  if (! S_ISDIR (statbuf.st_mode))
+    {
+      errno = ENOTDIR;
+      goto lose;
+    }
+
+  dirp = (DIR *) calloc (1, sizeof (DIR) + NAME_MAX); /* Zero-fill.  */
+  if (dirp == NULL)
+  lose:
+    {
+      int save = errno;
+      (void) __close (fd);
+      errno = save;
+      return NULL;
+    }
+
+#ifdef _STATBUF_ST_BLKSIZE
+  if (statbuf.st_blksize < sizeof (struct direct))
+    dirp->__allocation = sizeof (struct direct);
+  else
+    dirp->__allocation = statbuf.st_blksize;
+#else
+  dirp->__allocation = (BUFSIZ < sizeof (struct direct) ?
+			sizeof (struct direct) : BUFSIZ);
+#endif
+  dirp->__data = (char *) malloc (dirp->__allocation);
+  if (dirp->__data == NULL)
+    {
+      int save = errno;
+      free ((PTR) dirp);
+      (void) __close (fd);
+      errno = save;
+      return NULL;
+    }
+
+  dirp->__fd = fd;
+  return dirp;
+}