From 393d1f5b431300bdaa353b8be60d1cdbad0f0d19 Mon Sep 17 00:00:00 2001 From: Pavel Tsekov Date: Thu, 21 Dec 2006 11:55:00 +0000 Subject: [PATCH] * src/fsusage.h: Resurrect. * src/fsusage.h: Likewise. --- src/ChangeLog | 5 ++ src/fsusage.c | 189 ++++++++++++++++++++++++++++++++++++++++++++++++++ src/fsusage.h | 33 +++++++++ 3 files changed, 227 insertions(+) create mode 100644 src/fsusage.c create mode 100644 src/fsusage.h diff --git a/src/ChangeLog b/src/ChangeLog index 25b4f469b..02af7eb8c 100644 --- a/src/ChangeLog +++ b/src/ChangeLog @@ -1,3 +1,8 @@ +2006-12-21 Pavel Tsekov + + * fsusage.h: Resurrect. + * fsusage.c: Likewise. + 2006-12-10 Pavel Tsekov * view.c (regexp_search): Keep the search string in a global diff --git a/src/fsusage.c b/src/fsusage.c new file mode 100644 index 000000000..e90bdfe67 --- /dev/null +++ b/src/fsusage.c @@ -0,0 +1,189 @@ +/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#include + +#ifdef HAVE_SYS_PARAM_H +#include +#endif + +#ifdef HAVE_SYS_MOUNT_H +#include +#endif + +#ifdef HAVE_SYS_VFS_H +#include +#endif + +#ifdef HAVE_SYS_FILSYS_H +#include /* SVR2. */ +#endif + +#include + +#ifdef HAVE_SYS_STATFS_H +#include +#endif + +#ifdef HAVE_DUSTAT_H /* AIX PS/2. */ +#include +#endif + +#ifdef HAVE_SYS_STATVFS_H /* SVR4. */ +#include +#endif + +#include "global.h" +#include "fsusage.h" + + +#ifdef HAVE_INFOMOUNT + +/* 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. */ + +static 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); +} + +#if defined(_AIX) && defined(_I386) +/* AIX PS/2 does not supply statfs. */ +static int aix_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; +} +#define statfs(path,fsb) aix_statfs(path,fsb) +#endif /* _AIX && _I386 */ + +/* 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; +} + +#endif /* HAVE_INFOMOUNT */ diff --git a/src/fsusage.h b/src/fsusage.h new file mode 100644 index 000000000..509d229b3 --- /dev/null +++ b/src/fsusage.h @@ -0,0 +1,33 @@ +/* fsusage.h -- declarations for filesystem space usage info + 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#ifndef __FSUSAGE_H +#define __FSUSAGE_H + +/* 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. */ +}; + + +extern int get_fs_usage (char *path, struct fs_usage *fsp); +#endif