e2b40a8ad5a598720ce6b28de5d1f868a7a4437d
/* fsusage.c -- return space usage of mounted filesystems
Copyright (C) 1991, 1992 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)
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., 675 Mass Ave, Cambridge, MA 02139, USA.
This file was modified slightly by Ian Lance Taylor, December 1992,
for use with Taylor UUCP. */
#ifndef _IBMR2 /* 4.3BSD, SunOS 4, HP-UX, AIX PS/2. */
#if STAT_STATFS2_FSIZE /* 4.4BSD. */
#if STAT_STATFS2_FS_DATA /* Ultrix. */
#if STAT_USTAT /* SVR2 and others. */
#if STAT_STATFS4 /* SVR3, Dynix, Irix. */
#ifdef _IBMR2 /* AIX RS6000. */
#ifdef _I386 /* AIX PS/2. */
#if STAT_STATVFS /* SVR4. */
#if ! STAT_STATFS2_FS_DATA
/* Return the number of TOSIZE-byte blocks used by
BLOCKS FROMSIZE-byte blocks, rounding up. */
adjust_blocks (blocks
, fromsize
, tosize
)
if (fromsize
== tosize
) /* E.g., from 512 to 512. */
else if (fromsize
> tosize
) /* E.g., from 2048 to 512. */
return blocks
* (fromsize
/ tosize
);
else /* E.g., from 256 to 512. */
return (blocks
+ 1) / (tosize
/ fromsize
);
/* Fill in the fields of FSP with information about space usage for
the filesystem on which PATH resides.
DISK is the device on which PATH is mounted, for space-getting
methods that need to know it.
Return 0 if successful, -1 if not. */
get_fs_usage (path
, disk
, fsp
)
#if STAT_STATFS2_FS_DATA /* Ultrix. */
if (statfs (path
, &fsd
) != 1)
#define convert_blocks(b) adjust_blocks ((b), 1024, 512)
fsp
->fsu_blocks
= convert_blocks (fsd
.fd_req
.btot
);
fsp
->fsu_bfree
= convert_blocks (fsd
.fd_req
.bfree
);
fsp
->fsu_bavail
= convert_blocks (fsd
.fd_req
.bfreen
);
fsp
->fsu_files
= fsd
.fd_req
.gtot
;
fsp
->fsu_ffree
= fsd
.fd_req
.gfree
;
#if STAT_STATFS2_BSIZE /* 4.3BSD, SunOS 4, HP-UX, AIX. */
if (statfs (path
, &fsd
) < 0)
#define convert_blocks(b) adjust_blocks ((b), fsd.f_bsize, 512)
#if STAT_STATFS2_FSIZE /* 4.4BSD. */
if (statfs (path
, &fsd
) < 0)
#define convert_blocks(b) adjust_blocks ((b), fsd.f_fsize, 512)
#if STAT_STATFS4 /* SVR3, Dynix, Irix. */
if (statfs (path
, &fsd
, sizeof fsd
, 0) < 0)
/* Empirically, the block counts on most SVR3 and SVR3-derived
systems seem to always be in terms of 512-byte blocks,
no matter what value f_bsize has. */
#define convert_blocks(b) (b)
#ifndef _SEQUENT_ /* _SEQUENT_ is DYNIX/ptx. */
#if STAT_STATVFS /* SVR4. */
if (statvfs (path
, &fsd
) < 0)
/* f_frsize isn't guaranteed to be supported. */
#define convert_blocks(b) \
adjust_blocks ((b), fsd.f_frsize ? fsd.f_frsize : fsd.f_bsize, 512)
if (stat (path
, &sstat
) < 0
|| ustat (sstat
.st_dev
, &s
) < 0)
fsp
->fsu_bfree
= f_tfree
;
fsp
->fsu_bavail
= f_tfree
;
#if ! STAT_STATFS2_FS_DATA /* ! Ultrix */
fsp
->fsu_blocks
= convert_blocks (fsd
.f_blocks
);
fsp
->fsu_bfree
= convert_blocks (fsd
.f_bfree
);
fsp
->fsu_bavail
= convert_blocks (fsd
.f_bavail
);
fsp
->fsu_files
= fsd
.f_files
;
fsp
->fsu_ffree
= fsd
.f_ffree
;
/* AIX PS/2 does not supply statfs. */
if (dustat (stats
.st_dev
, 0, &fsd
, sizeof (fsd
)))
fsb
->f_bsize
= fsd
.du_bsize
;
fsb
->f_blocks
= fsd
.du_fsize
- fsd
.du_isize
;
fsb
->f_bfree
= fsd
.du_tfree
;
fsb
->f_bavail
= fsd
.du_tfree
;
fsb
->f_files
= (fsd
.du_isize
- 2) * fsd
.du_inopb
;
fsb
->f_ffree
= fsd
.du_tinode
;
fsb
->f_fsid
.val
[0] = fsd
.du_site
;
fsb
->f_fsid
.val
[1] = fsd
.du_pckno
;
#endif /* _AIX && _I386 */