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* src/fsusage.h: Update from gnulib.
* src/fsusage.c: Likewise.
This commit is contained in:
Pavel Tsekov
parent
393d1f5b43
commit
9ab2dde60c
@ -1,3 +1,8 @@
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2006-12-21 Pavel Tsekov <ptsekov@gmx.net>
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* fsusage.h: Update from gnulib.
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* fsusage.c: Likewise.
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2006-12-21 Pavel Tsekov <ptsekov@gmx.net>
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* fsusage.h: Resurrect.
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356
src/fsusage.c
356
src/fsusage.c
@ -1,5 +1,7 @@
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/* fsusage.c -- return space usage of mounted filesystems
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Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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/* fsusage.c -- return space usage of mounted file systems
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Copyright (C) 1991, 1992, 1996, 1998, 1999, 2002, 2003, 2004, 2005, 2006
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Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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@ -12,79 +14,234 @@
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <sys/types.h>
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#ifdef HAVE_SYS_MOUNT_H
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#include <sys/mount.h>
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#endif
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#ifdef HAVE_SYS_VFS_H
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#include <sys/vfs.h>
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#endif
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#ifdef HAVE_SYS_FILSYS_H
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#include <sys/filsys.h> /* SVR2. */
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#endif
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#include <stdlib.h>
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#ifdef HAVE_SYS_STATFS_H
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#include <sys/statfs.h>
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#endif
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#ifdef HAVE_DUSTAT_H /* AIX PS/2. */
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#include <sys/dustat.h>
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#endif
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#ifdef HAVE_SYS_STATVFS_H /* SVR4. */
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#include <sys/statvfs.h>
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#endif
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#include "global.h"
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#include "fsusage.h"
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#ifdef HAVE_INFOMOUNT
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/* Return the number of TOSIZE-byte blocks used by
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BLOCKS FROMSIZE-byte blocks, rounding away from zero.
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TOSIZE must be positive. Return -1 if FROMSIZE is not positive. */
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#include "fsusage.h"
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static long
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fs_adjust_blocks (long blocks, int fromsize, int tosize)
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#include <limits.h>
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#include <sys/types.h>
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#if STAT_STATVFS /* POSIX 1003.1-2001 (and later) with XSI */
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# include <sys/statvfs.h>
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#else
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/* Don't include backward-compatibility files unless they're needed.
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Eventually we'd like to remove all this cruft. */
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# include <fcntl.h>
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# include <unistd.h>
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# include <sys/stat.h>
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# if HAVE_SYS_PARAM_H
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# include <sys/param.h>
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# endif
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# if HAVE_SYS_MOUNT_H
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# include <sys/mount.h>
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# endif
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# if HAVE_SYS_VFS_H
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# include <sys/vfs.h>
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# endif
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# if HAVE_SYS_FS_S5PARAM_H /* Fujitsu UXP/V */
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# include <sys/fs/s5param.h>
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# endif
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# if defined HAVE_SYS_FILSYS_H && !defined _CRAY
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# include <sys/filsys.h> /* SVR2 */
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# endif
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# if HAVE_SYS_STATFS_H
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# include <sys/statfs.h>
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# endif
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# if HAVE_DUSTAT_H /* AIX PS/2 */
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# include <sys/dustat.h>
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# endif
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# include "full-read.h"
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#endif
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/* Many space usage primitives use all 1 bits to denote a value that is
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not applicable or unknown. Propagate this information by returning
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a uintmax_t value that is all 1 bits if X is all 1 bits, even if X
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is unsigned and narrower than uintmax_t. */
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#define PROPAGATE_ALL_ONES(x) \
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((sizeof (x) < sizeof (uintmax_t) \
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&& (~ (x) == (sizeof (x) < sizeof (int) \
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? - (1 << (sizeof (x) * CHAR_BIT)) \
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: 0))) \
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? UINTMAX_MAX : (uintmax_t) (x))
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/* Extract the top bit of X as an uintmax_t value. */
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#define EXTRACT_TOP_BIT(x) ((x) \
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& ((uintmax_t) 1 << (sizeof (x) * CHAR_BIT - 1)))
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/* If a value is negative, many space usage primitives store it into an
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integer variable by assignment, even if the variable's type is unsigned.
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So, if a space usage variable X's top bit is set, convert X to the
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uintmax_t value V such that (- (uintmax_t) V) is the negative of
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the original value. If X's top bit is clear, just yield X.
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Use PROPAGATE_TOP_BIT if the original value might be negative;
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otherwise, use PROPAGATE_ALL_ONES. */
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#define PROPAGATE_TOP_BIT(x) ((x) | ~ (EXTRACT_TOP_BIT (x) - 1))
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/* Fill in the fields of FSP with information about space usage for
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the file system on which FILE resides.
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DISK is the device on which FILE is mounted, for space-getting
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methods that need to know it.
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Return 0 if successful, -1 if not. When returning -1, ensure that
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ERRNO is either a system error value, or zero if DISK is NULL
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on a system that requires a non-NULL value. */
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int get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
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{
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if (tosize <= 0)
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abort ();
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if (fromsize <= 0)
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#if defined STAT_STATVFS /* POSIX */
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struct statvfs fsd;
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if (statvfs (file, &fsd) < 0)
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return -1;
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if (fromsize == tosize) /* E.g., from 512 to 512. */
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return blocks;
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else if (fromsize > tosize) /* E.g., from 2048 to 512. */
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return blocks * (fromsize / tosize);
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else /* E.g., from 256 to 512. */
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return (blocks + (blocks < 0 ? -1 : 1)) / (tosize / fromsize);
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/* f_frsize isn't guaranteed to be supported. */
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fsp->fsu_blocksize = (fsd.f_frsize
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? PROPAGATE_ALL_ONES (fsd.f_frsize)
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: PROPAGATE_ALL_ONES (fsd.f_bsize));
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#elif defined STAT_STATFS2_FS_DATA /* Ultrix */
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struct fs_data fsd;
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if (statfs (file, &fsd) != 1)
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return -1;
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fsp->fsu_blocksize = 1024;
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fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.fd_req.btot);
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fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.fd_req.bfree);
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fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.fd_req.bfreen);
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fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.fd_req.bfreen) != 0;
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fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.fd_req.gtot);
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fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.fd_req.gfree);
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#elif defined STAT_READ_FILSYS /* SVR2 */
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# ifndef SUPERBOFF
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# define SUPERBOFF (SUPERB * 512)
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# endif
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struct filsys fsd;
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int fd;
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if (! disk)
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{
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errno = 0;
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return -1;
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}
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fd = open (disk, O_RDONLY);
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if (fd < 0)
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return -1;
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lseek (fd, (off_t) SUPERBOFF, 0);
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if (full_read (fd, (char *) &fsd, sizeof fsd) != sizeof fsd)
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{
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close (fd);
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return -1;
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}
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close (fd);
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fsp->fsu_blocksize = (fsd.s_type == Fs2b ? 1024 : 512);
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fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.s_fsize);
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fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.s_tfree);
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fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.s_tfree);
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fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.s_tfree) != 0;
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fsp->fsu_files = (fsd.s_isize == -1
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? UINTMAX_MAX
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: (fsd.s_isize - 2) * INOPB * (fsd.s_type == Fs2b ? 2 : 1));
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fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.s_tinode);
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#elif defined STAT_STATFS3_OSF1
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struct statfs fsd;
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if (statfs (file, &fsd, sizeof (struct statfs)) != 0)
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return -1;
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fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
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#elif defined STAT_STATFS2_BSIZE /* 4.3BSD, SunOS 4, HP-UX, AIX */
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struct statfs fsd;
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if (statfs (file, &fsd) < 0)
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return -1;
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fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize);
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# ifdef STATFS_TRUNCATES_BLOCK_COUNTS
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/* In SunOS 4.1.2, 4.1.3, and 4.1.3_U1, the block counts in the
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struct statfs are truncated to 2GB. These conditions detect that
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truncation, presumably without botching the 4.1.1 case, in which
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the values are not truncated. The correct counts are stored in
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undocumented spare fields. */
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if (fsd.f_blocks == 0x7fffffff / fsd.f_bsize && fsd.f_spare[0] > 0)
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{
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fsd.f_blocks = fsd.f_spare[0];
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fsd.f_bfree = fsd.f_spare[1];
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fsd.f_bavail = fsd.f_spare[2];
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}
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# endif /* STATFS_TRUNCATES_BLOCK_COUNTS */
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#elif defined STAT_STATFS2_FSIZE /* 4.4BSD */
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struct statfs fsd;
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if (statfs (file, &fsd) < 0)
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return -1;
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fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
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#elif defined STAT_STATFS4 /* SVR3, Dynix, Irix, AIX */
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# if !_AIX && !defined _SEQUENT_ && !defined DOLPHIN
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# define f_bavail f_bfree
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# endif
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struct statfs fsd;
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if (statfs (file, &fsd, sizeof fsd, 0) < 0)
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return -1;
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/* Empirically, the block counts on most SVR3 and SVR3-derived
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systems seem to always be in terms of 512-byte blocks,
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no matter what value f_bsize has. */
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# if _AIX || defined _CRAY
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fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize);
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# else
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fsp->fsu_blocksize = 512;
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# endif
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#endif
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#if (defined STAT_STATVFS \
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|| (!defined STAT_STATFS2_FS_DATA && !defined STAT_READ_FILSYS))
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fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.f_blocks);
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fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.f_bfree);
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fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.f_bavail);
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fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.f_bavail) != 0;
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fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.f_files);
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fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.f_ffree);
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#endif
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return 0;
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}
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#if defined(_AIX) && defined(_I386)
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#if defined _AIX && defined _I386
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/* AIX PS/2 does not supply statfs. */
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static int aix_statfs (char *path, struct statfs *fsb)
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static int statfs (char *file, struct statfs *fsb)
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{
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struct stat stats;
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struct dustat fsd;
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if (stat (path, &stats))
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if (stat (file, &stats) != 0)
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return -1;
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if (dustat (stats.st_dev, 0, &fsd, sizeof (fsd)))
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return -1;
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@ -99,91 +256,6 @@ static int aix_statfs (char *path, struct statfs *fsb)
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fsb->f_fsid.val[1] = fsd.du_pckno;
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return 0;
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}
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#define statfs(path,fsb) aix_statfs(path,fsb)
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#endif /* _AIX && _I386 */
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/* Fill in the fields of FSP with information about space usage for
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the filesystem on which PATH resides.
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Return 0 if successful, -1 if not. */
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int get_fs_usage (char *path, struct fs_usage *fsp)
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{
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#ifdef STAT_STATFS3_OSF1
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struct statfs fsd;
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if (statfs (path, &fsd, sizeof (struct statfs)) != 0)
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return -1;
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#define CONVERT_BLOCKS(b) fs_adjust_blocks ((b), fsd.f_fsize, 512)
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#endif /* STAT_STATFS3_OSF1 */
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#ifdef STAT_STATFS2_FS_DATA /* Ultrix. */
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struct fs_data fsd;
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if (statfs (path, &fsd) != 1)
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return -1;
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#define CONVERT_BLOCKS(b) fs_adjust_blocks ((b), 1024, 512)
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fsp->fsu_blocks = CONVERT_BLOCKS (fsd.fd_req.btot);
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fsp->fsu_bfree = CONVERT_BLOCKS (fsd.fd_req.bfree);
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fsp->fsu_bavail = CONVERT_BLOCKS (fsd.fd_req.bfreen);
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fsp->fsu_files = fsd.fd_req.gtot;
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fsp->fsu_ffree = fsd.fd_req.gfree;
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#endif
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#ifdef STAT_STATFS2_BSIZE /* 4.3BSD, SunOS 4, HP-UX, AIX. */
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struct statfs fsd;
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if (statfs (path, &fsd) < 0)
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return -1;
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#define CONVERT_BLOCKS(b) fs_adjust_blocks ((b), fsd.f_bsize, 512)
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#endif
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#ifdef STAT_STATFS2_FSIZE /* 4.4BSD. */
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struct statfs fsd;
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if (statfs (path, &fsd) < 0)
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return -1;
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#define CONVERT_BLOCKS(b) fs_adjust_blocks ((b), fsd.f_fsize, 512)
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#endif
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#ifdef STAT_STATFS4 /* SVR3, Dynix, Irix, AIX. */
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struct statfs fsd;
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if (statfs (path, &fsd, sizeof fsd, 0) < 0)
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return -1;
|
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/* Empirically, the block counts on most SVR3 and SVR3-derived
|
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systems seem to always be in terms of 512-byte blocks,
|
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no matter what value f_bsize has. */
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#if _AIX
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#define CONVERT_BLOCKS(b) fs_adjust_blocks ((b), fsd.f_bsize, 512)
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#else
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#define CONVERT_BLOCKS(b) (b)
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#ifndef _SEQUENT_ /* _SEQUENT_ is DYNIX/ptx. */
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#ifndef DOLPHIN /* DOLPHIN 3.8.alfa/7.18 has f_bavail */
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#define f_bavail f_bfree
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#endif
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#endif
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||||
#endif
|
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#endif
|
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|
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#ifdef STAT_STATVFS /* SVR4. */
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struct statvfs fsd;
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|
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if (statvfs (path, &fsd) < 0)
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return -1;
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/* f_frsize isn't guaranteed to be supported. */
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#define CONVERT_BLOCKS(b) \
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fs_adjust_blocks ((b), fsd.f_frsize ? fsd.f_frsize : fsd.f_bsize, 512)
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#endif
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#if defined(CONVERT_BLOCKS) && !defined(STAT_STATFS2_FS_DATA) && !defined(STAT_READ_FILSYS) /* !Ultrix && !SVR2. */
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fsp->fsu_blocks = CONVERT_BLOCKS (fsd.f_blocks);
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fsp->fsu_bfree = CONVERT_BLOCKS (fsd.f_bfree);
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fsp->fsu_bavail = CONVERT_BLOCKS (fsd.f_bavail);
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fsp->fsu_files = fsd.f_files;
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fsp->fsu_ffree = fsd.f_ffree;
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#endif
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return 0;
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}
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#endif /* HAVE_INFOMOUNT */
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@ -1,5 +1,7 @@
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/* fsusage.h -- declarations for filesystem space usage info
|
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Copyright (C) 1991, 1992 Free Software Foundation, Inc.
|
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/* fsusage.h -- declarations for file system space usage info
|
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|
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Copyright (C) 1991, 1992, 1997, 2003, 2004, 2005, 2006 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
|
||||
@ -12,22 +14,29 @@
|
||||
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. */
|
||||
along with this program; if not, write to the Free Software Foundation,
|
||||
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
|
||||
|
||||
#ifndef __FSUSAGE_H
|
||||
#define __FSUSAGE_H
|
||||
/* Space usage statistics for a file system. Blocks are 512-byte. */
|
||||
|
||||
#if !defined MC_FSUSAGE_H
|
||||
# define MC_FSUSAGE_H
|
||||
|
||||
# if HAVE_INTTYPES_H
|
||||
# include <inttypes.h>
|
||||
# endif
|
||||
|
||||
/* Space usage statistics for a filesystem. Blocks are 512-byte. */
|
||||
struct fs_usage
|
||||
{
|
||||
long fsu_blocks; /* Total blocks. */
|
||||
long fsu_bfree; /* Free blocks available to superuser. */
|
||||
long fsu_bavail; /* Free blocks available to non-superuser. */
|
||||
long fsu_files; /* Total file nodes. */
|
||||
long fsu_ffree; /* Free file nodes. */
|
||||
uintmax_t fsu_blocksize; /* Size of a block. */
|
||||
uintmax_t fsu_blocks; /* Total blocks. */
|
||||
uintmax_t fsu_bfree; /* Free blocks available to superuser. */
|
||||
uintmax_t fsu_bavail; /* Free blocks available to non-superuser. */
|
||||
int fsu_bavail_top_bit_set; /* 1 if fsu_bavail represents a value < 0. */
|
||||
uintmax_t fsu_files; /* Total file nodes. */
|
||||
uintmax_t fsu_ffree; /* Free file nodes. */
|
||||
};
|
||||
|
||||
int get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp);
|
||||
|
||||
extern int get_fs_usage (char *path, struct fs_usage *fsp);
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user