mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-24 10:40:48 +00:00
0eccdd1c36
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@162 a592a061-630c-0410-9148-cb99ea01b6c8
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/* 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
|
||
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.
|
||
|
||
This program 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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
||
|
||
/* Written by Brian L. Matthews, blm@6sceng.UUCP. */
|
||
|
||
#ifdef HAVE_CONFIG_H
|
||
# include <config.h>
|
||
#endif
|
||
|
||
#if !defined (HAVE_ST_BLOCKS) && !defined(_POSIX_VERSION)
|
||
# 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. */
|
||
# ifndef BSIZE
|
||
# define BSIZE 1024
|
||
# endif
|
||
|
||
/* Number of inode pointers per indirect block. */
|
||
# define NINDIR (BSIZE/sizeof(daddr_t))
|
||
# endif /* !NINDIR */
|
||
|
||
/* Number of direct block addresses in an inode. */
|
||
# define NDIR 10
|
||
|
||
/* Return the number of 512-byte blocks in a file of SIZE bytes. */
|
||
|
||
long
|
||
st_blocks (size)
|
||
long size;
|
||
{
|
||
long datablks = (size + 512 - 1) / 512;
|
||
long indrblks = 0;
|
||
|
||
if (datablks > NDIR)
|
||
{
|
||
indrblks = (datablks - NDIR - 1) / NINDIR + 1;
|
||
|
||
if (datablks > NDIR + NINDIR)
|
||
{
|
||
indrblks += (datablks - NDIR - NINDIR - 1) / (NINDIR * NINDIR) + 1;
|
||
|
||
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. */
|
||
extern int textutils_fileblocks_unused;
|
||
#endif
|