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authorUlrich Drepper <drepper@redhat.com>1998-03-20 12:06:55 +0000
committerUlrich Drepper <drepper@redhat.com>1998-03-20 12:06:55 +0000
commit89a9e37b7a7a2134cedb6d27db265a8ab774f9d1 (patch)
tree19131b4a9aa63f7737c683a57a00b1b37bf7b701 /dirent/scandir64.c
parent9c1a1da9866c22c1626f2222cf5d03ef1b0ede3b (diff)
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Update.
1998-03-20 11:58  Ulrich Drepper  <drepper@cygnus.com>

	* dirent/Makefile (routines): Add scandir64, alphasort64, and
	versionsort64.
	* dirent/alphasort64.c: New file.
	* dirent/scandir64.c: New file.
	* dirent/versionsort64.c: New file.
	* dirent/dirent.h: Add LFS support for scandir, alphasort, and
	versionsort.
	* sysdeps/generic/readdir64.c: Rename to __readdir64 and make
	old name weak alias.
	* sysdeps/unix/sysv/linux/readdir64.c: Likewise.

	* dirent/alphasort.c: Use strcoll instead of strcmp.

	* dirent/scandir.c: Optimize a bit.

	* dirent/versionsort.c: Pretty print.

1998-03-20  Ulrich Drepper  <drepper@cygnus.com>

	* string/string.h: Add prototype for __strtok_r.
Diffstat (limited to 'dirent/scandir64.c')
-rw-r--r--dirent/scandir64.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/dirent/scandir64.c b/dirent/scandir64.c
new file mode 100644
index 0000000000..a0b7406aac
--- /dev/null
+++ b/dirent/scandir64.c
@@ -0,0 +1,93 @@
+/* Copyright (C) 1992, 93, 94, 95, 96, 97, 98 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <dirent.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+int
+scandir64 (dir, namelist, select, cmp)
+     const char *dir;
+     struct dirent64 ***namelist;
+     int (*select) __P ((const struct dirent64 *));
+     int (*cmp) __P ((const void *, const void *));
+{
+  DIR *dp = opendir (dir);
+  struct dirent64 **v = NULL;
+  size_t vsize = 0, i;
+  struct dirent64 *d;
+  int save;
+
+  if (dp == NULL)
+    return -1;
+
+  save = errno;
+  __set_errno (0);
+
+  i = 0;
+  while ((d = __readdir64 (dp)) != NULL)
+    if (select == NULL || (*select) (d))
+      {
+	struct dirent64 *vnew;
+	size_t dsize;
+
+	/* Ignore errors from select or readdir */
+	__set_errno (0);
+
+	if (i == vsize)
+	  {
+	    struct dirent64 **new;
+	    if (vsize == 0)
+	      vsize = 10;
+	    else
+	      vsize *= 2;
+	    new = (struct dirent64 **) realloc (v, vsize * sizeof (*v));
+	    if (new == NULL)
+	      break;
+	    v = new;
+	  }
+
+	dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d;
+	vnew = (struct dirent64 *) malloc (dsize);
+	if (vnew == NULL)
+	  break;
+
+	v[i++] = (struct dirent64 *) memcpy (vnew, d, dsize);
+      }
+
+  if (errno != 0)
+    {
+      save = errno;
+      (void) closedir (dp);
+      while (i > 0)
+	free (v[--i]);
+      free (v);
+      __set_errno (save);
+      return -1;
+    }
+
+  (void) closedir (dp);
+  __set_errno (save);
+
+  /* Sort the list if we have a comparison function to sort with.  */
+  if (cmp != NULL)
+    qsort (v, i, sizeof (*v), cmp);
+  *namelist = v;
+  return i;
+}