+++ /dev/null
-/* 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)
- 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#if !defined(NO_INFOMOUNT) || defined(__QNX__)
-
-#if defined(__QNX__)
-#define STAT_STATFS4
-#endif
-
-#include <sys/types.h>
-
-#include "fsusage.h"
-
-int statfs (); /* We leave the type ambiguous intentionally here */
-
-#ifdef HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
-
-#ifdef HAVE_SYS_MOUNT_H
-#include <sys/mount.h>
-#endif
-
-#ifdef HAVE_SYS_VFS_H
-#include <sys/vfs.h>
-#endif
-
-#ifdef HAVE_SYS_FILSYS_H
-#include <sys/filsys.h> /* SVR2. */
-#endif
-
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif
-
-#ifdef HAVE_SYS_STATFS_H
-#include <sys/statfs.h>
-#endif
-
-#ifdef HAVE_DUSTAT_H /* AIX PS/2. */
-#include <sys/dustat.h>
-#endif
-
-#ifdef HAVE_SYS_STATVFS_H /* SVR4. */
-#include <sys/statvfs.h>
-#endif
-
-/* Return the number of TOSIZE-byte blocks used by
- BLOCKS FROMSIZE-byte blocks, rounding away from zero.
- TOSIZE must be positive. Return -1 if FROMSIZE is not positive. */
-
-long fs_adjust_blocks (long blocks, int fromsize, int tosize)
-{
- if (tosize <= 0)
- abort ();
- if (fromsize <= 0)
- return -1;
-
- if (fromsize == tosize) /* E.g., from 512 to 512. */
- return blocks;
- else if (fromsize > tosize) /* E.g., from 2048 to 512. */
- return blocks * (fromsize / tosize);
- else /* E.g., from 256 to 512. */
- return (blocks + (blocks < 0 ? -1 : 1)) / (tosize / fromsize);
-}
-
-/* Fill in the fields of FSP with information about space usage for
- the filesystem on which PATH resides.
- Return 0 if successful, -1 if not. */
-
-int get_fs_usage (char *path, struct fs_usage *fsp)
-{
-#ifdef STAT_STATFS3_OSF1
- struct statfs fsd;
-
- if (statfs (path, &fsd, sizeof (struct statfs)) != 0)
- return -1;
-#define CONVERT_BLOCKS(b) fs_adjust_blocks ((b), fsd.f_fsize, 512)
-#endif /* STAT_STATFS3_OSF1 */
-
-#ifdef STAT_STATFS2_FS_DATA /* Ultrix. */
- struct fs_data fsd;
-
- if (statfs (path, &fsd) != 1)
- return -1;
-#define CONVERT_BLOCKS(b) fs_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;
-#endif
-
-#ifdef STAT_STATFS2_BSIZE /* 4.3BSD, SunOS 4, HP-UX, AIX. */
- struct statfs fsd;
-
- if (statfs (path, &fsd) < 0)
- return -1;
-#define CONVERT_BLOCKS(b) fs_adjust_blocks ((b), fsd.f_bsize, 512)
-#endif
-
-#ifdef STAT_STATFS2_FSIZE /* 4.4BSD. */
- struct statfs fsd;
-
- if (statfs (path, &fsd) < 0)
- return -1;
-#define CONVERT_BLOCKS(b) fs_adjust_blocks ((b), fsd.f_fsize, 512)
-#endif
-
-#ifdef STAT_STATFS4 /* SVR3, Dynix, Irix, AIX. */
- struct statfs fsd;
-
- if (statfs (path, &fsd, sizeof fsd, 0) < 0)
- return -1;
- /* 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. */
-#if _AIX
-#define CONVERT_BLOCKS(b) fs_adjust_blocks ((b), fsd.f_bsize, 512)
-#else
-#define CONVERT_BLOCKS(b) (b)
-#ifndef _SEQUENT_ /* _SEQUENT_ is DYNIX/ptx. */
-#ifndef DOLPHIN /* DOLPHIN 3.8.alfa/7.18 has f_bavail */
-#define f_bavail f_bfree
-#endif
-#endif
-#endif
-#endif
-
-#ifdef STAT_STATVFS /* SVR4. */
- struct statvfs fsd;
-
- if (statvfs (path, &fsd) < 0)
- return -1;
- /* f_frsize isn't guaranteed to be supported. */
-#define CONVERT_BLOCKS(b) \
- fs_adjust_blocks ((b), fsd.f_frsize ? fsd.f_frsize : fsd.f_bsize, 512)
-#endif
-
-#if defined(CONVERT_BLOCKS) && !defined(STAT_STATFS2_FS_DATA) && !defined(STAT_READ_FILSYS) /* !Ultrix && !SVR2. */
- 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;
-#endif
-
- return 0;
-}
-
-#if defined(_AIX) && defined(_I386)
-/* AIX PS/2 does not supply statfs. */
-
-int statfs (char *path, struct statfs *fsb)
-{
- struct stat stats;
- struct dustat fsd;
-
- if (stat (path, &stats))
- return -1;
- if (dustat (stats.st_dev, 0, &fsd, sizeof (fsd)))
- return -1;
- fsb->f_type = 0;
- 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;
- return 0;
-}
-#endif /* _AIX && _I386 */
-#endif /* NO_INFOMOUNT */
projects / reactos.git / blobdiff