/* Convert file size to number of blocks on System V-like machines.
- Copyright (C) 1990 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ Copyright (C) 1990, 1997-1999, 2004-2006, 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
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Brian L. Matthews, blm@6sceng.UUCP. */
-\f
-#if !defined (HAVE_ST_BLOCKS) && !defined(_POSIX_SOURCE)
+
+#include <config.h>
+
#include <sys/types.h>
-#include <sys/param.h>
-#ifndef NINDIR
-/* Some SysV's, like Irix, seem to lack these. Hope they're correct. */
-/* Size of a indirect block, in bytes. */
-#define BSIZE 1024
+#if HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+
+#if !HAVE_STRUCT_STAT_ST_BLOCKS && !defined _POSIX_SOURCE && defined BSIZE
+
+# include <unistd.h>
+
+# ifndef NINDIR
+
+# if defined __DJGPP__
+typedef long daddr_t; /* for disk address */
+# endif
+/* Some SysV's, like Irix, seem to lack this. Hope it's correct. */
/* Number of inode pointers per indirect block. */
-#define NINDIR (BSIZE/sizeof(daddr_t))
-#endif /* !NINDIR */
+# define NINDIR (BSIZE / sizeof (daddr_t))
+# endif /* !NINDIR */
/* Number of direct block addresses in an inode. */
-#define NDIR 10
+# define NDIR 10
/* Return the number of 512-byte blocks in a file of SIZE bytes. */
-long
-st_blocks (size)
- long size;
+off_t
+st_blocks (off_t size)
{
- long datablks = (size + 512 - 1) / 512;
- long indrblks = 0;
+ off_t datablks = size / 512 + (size % 512 != 0);
+ off_t indrblks = 0;
if (datablks > NDIR)
{
indrblks = (datablks - NDIR - 1) / NINDIR + 1;
if (datablks > NDIR + NINDIR)
- {
- indrblks += (datablks - NDIR - NINDIR - 1) / (NINDIR * NINDIR) + 1;
+ {
+ indrblks += (datablks - NDIR - NINDIR - 1) / (NINDIR * NINDIR) + 1;
- if (datablks > NDIR + NINDIR + NINDIR * NINDIR)
- indrblks++;
- }
+ if (datablks > NDIR + NINDIR + NINDIR * NINDIR)
+ indrblks++;
+ }
}
return datablks + indrblks;
}
+#else
+/* This declaration is solely to ensure that after preprocessing
+ this file is never empty. */
+typedef int textutils_fileblocks_unused;
#endif