/* savedir.c -- save the list of files in a directory in a string
- Copyright (C) 1990, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
- 2006 Free Software Foundation, Inc.
+ Copyright (C) 1990, 1997-2001, 2003-2006, 2009-2013 Free Software
+ Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <errno.h>
-#include <dirent.h>
+#include "dirent--.h"
#ifndef _D_EXACT_NAMLEN
-# define _D_EXACT_NAMLEN(dp) strlen ((dp)->d_name)
+# define _D_EXACT_NAMLEN(dp) strlen ((dp)->d_name)
#endif
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
-#include "openat.h"
#include "xalloc.h"
#ifndef NAME_SIZE_DEFAULT
# define NAME_SIZE_DEFAULT 512
#endif
-/* The results of opendir() in this file are not used with dirfd and fchdir,
- therefore save some unnecessary work in fchdir.c. */
-#undef opendir
-#undef closedir
-
/* Return a freshly allocated string containing the file names
in directory DIRP, separated by '\0' characters;
the end is marked by two '\0' characters in a row.
- Return NULL (setting errno) if DIRP cannot be read or closed.
+ Return NULL (setting errno) if DIRP cannot be read.
If DIRP is NULL, return NULL without affecting errno. */
-static char *
-savedirstream (DIR *dirp)
+char *
+streamsavedir (DIR *dirp)
{
char *name_space;
size_t allocated = NAME_SIZE_DEFAULT;
errno = 0;
dp = readdir (dirp);
if (! dp)
- break;
+ break;
/* Skip "", ".", and "..". "" is returned by at least one buggy
implementation: Solaris 2.4 readdir on NFS file systems. */
entry = dp->d_name;
if (entry[entry[0] != '.' ? 0 : entry[1] != '.' ? 1 : 2] != '\0')
- {
- size_t entry_size = _D_EXACT_NAMLEN (dp) + 1;
- if (used + entry_size < used)
- xalloc_die ();
- if (allocated <= used + entry_size)
- {
- do
- {
- if (2 * allocated < allocated)
- xalloc_die ();
- allocated *= 2;
- }
- while (allocated <= used + entry_size);
-
- name_space = xrealloc (name_space, allocated);
- }
- memcpy (name_space + used, entry, entry_size);
- used += entry_size;
- }
+ {
+ size_t entry_size = _D_EXACT_NAMLEN (dp) + 1;
+ if (used + entry_size < used)
+ xalloc_die ();
+ if (allocated <= used + entry_size)
+ {
+ do
+ {
+ if (2 * allocated < allocated)
+ xalloc_die ();
+ allocated *= 2;
+ }
+ while (allocated <= used + entry_size);
+
+ name_space = xrealloc (name_space, allocated);
+ }
+ memcpy (name_space + used, entry, entry_size);
+ used += entry_size;
+ }
}
name_space[used] = '\0';
save_errno = errno;
- if (closedir (dirp) != 0)
- save_errno = errno;
if (save_errno != 0)
{
free (name_space);
return name_space;
}
+/* Like streamsavedir (DIRP), except also close DIRP. */
+
+static char *
+savedirstream (DIR *dirp)
+{
+ char *name_space = streamsavedir (dirp);
+ if (dirp && closedir (dirp) != 0)
+ {
+ int save_errno = errno;
+ free (name_space);
+ errno = save_errno;
+ return NULL;
+ }
+ return name_space;
+}
+
/* Return a freshly allocated string containing the file names
in directory DIR, separated by '\0' characters;
the end is marked by two '\0' characters in a row.
the end is marked by two '\0' characters in a row.
Return NULL (setting errno) if FD cannot be read or closed. */
+/* deprecated */
char *
fdsavedir (int fd)
{