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/* |
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* i-scream libstatgrab |
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* http://www.i-scream.org |
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* Copyright (C) 2000-2004 i-scream |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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* 02111-1307 USA |
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* |
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* $Id: disk_stats.c,v 1.88 2009/12/04 22:09:30 tdb Exp $ |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <time.h> |
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#include "statgrab.h" |
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#include "vector.h" |
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#include "tools.h" |
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|
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#ifdef SOLARIS |
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#include <sys/mnttab.h> |
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#include <sys/statvfs.h> |
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#include <kstat.h> |
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#define VALID_FS_TYPES {"ufs", "tmpfs", "vxfs", "nfs", "zfs"} |
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#endif |
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|
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#if defined(LINUX) || defined(CYGWIN) |
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#include <mntent.h> |
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#include <sys/vfs.h> |
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#include <sys/statvfs.h> |
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#endif |
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|
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#ifdef LINUX |
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#define VALID_FS_TYPES {"adfs", "affs", "befs", "bfs", "efs", "ext2", \ |
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"ext3", "ext4", "vxfs", "hfs", "hfsplus", "hpfs", \ |
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"jffs", "jffs2", "minix", "msdos", "ntfs", "qnx4", \ |
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"ramfs", "rootfs", "reiserfs", "sysv", "v7", "udf", \ |
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"ufs", "umsdos", "vfat", "xfs", "jfs", "nfs", \ |
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"ocfs", "cifs"} |
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#endif |
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|
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#ifdef CYGWIN |
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#define VALID_FS_TYPES {"user"} |
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#endif |
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|
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#ifdef ALLBSD |
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#include <sys/param.h> |
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#include <sys/ucred.h> |
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#include <sys/mount.h> |
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#endif |
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#if defined(FREEBSD) || defined(DFBSD) |
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#include <sys/dkstat.h> |
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#include <devstat.h> |
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#include <sys/param.h> |
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#include <sys/mount.h> |
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#include <sys/sysctl.h> |
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/*#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \ |
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"ufs", "mfs", "nfs", "zfs", "tmpfs", "reiserfs", \ |
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"xfs"}*/ |
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static char **VALID_FS_TYPES; |
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static size_t n_valid_fs_types; |
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#endif |
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#if defined(NETBSD) || defined(OPENBSD) |
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#include <sys/param.h> |
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#include <sys/sysctl.h> |
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#include <sys/disk.h> |
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#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \ |
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"ntfs", "nfs"} |
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#endif |
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|
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#ifdef HPUX |
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#include <sys/param.h> |
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#include <sys/pstat.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <sys/vfs.h> |
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#include <mntent.h> |
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#include <dirent.h> |
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#include <stdio.h> |
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#include <time.h> |
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#define VALID_FS_TYPES {"vxfs", "hfs", "nfs"} |
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#define DISK_BATCH 30 |
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#endif |
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|
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#ifdef AIX |
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#include <unistd.h> |
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#include <errno.h> |
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#include <ctype.h> |
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#include <fcntl.h> |
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#include <fstab.h> |
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#include <sys/statfs.h> |
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#include <sys/mntctl.h> |
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#include <sys/vmount.h> |
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#include <libperfstat.h> |
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#define KNOWN_VALID_FS_TYPES { \ |
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"jfs2", /* 0 */ \ |
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"namefs", /* 1 */ \ |
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"nfs", /* 2 */ \ |
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"jfs", /* 3 */ \ |
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NULL, /* 4 */ \ |
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"cdrom", /* 5 */ \ |
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"procfs", /* 6 */ \ |
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NULL, /* 7 */ \ |
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NULL, /* 8 */ \ |
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NULL, /* 9 */ \ |
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NULL, /* 10 */ \ |
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NULL, /* 11 */ \ |
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NULL, /* 12 */ \ |
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NULL, /* 13 */ \ |
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NULL, /* 14 */ \ |
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NULL, /* 15 */ \ |
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"sfs", /* 16 */ \ |
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"cachefs", /* 17 */ \ |
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"nfs3", /* 18 */ \ |
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"autofs", /* 19 */ \ |
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NULL, /* 20 */ \ |
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NULL, /* 21 */ \ |
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NULL, /* 22 */ \ |
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NULL, /* 23 */ \ |
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NULL, /* 24 */ \ |
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NULL, /* 25 */ \ |
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NULL, /* 26 */ \ |
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NULL, /* 27 */ \ |
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NULL, /* 28 */ \ |
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NULL, /* 29 */ \ |
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NULL, /* 30 */ \ |
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NULL, /* 31 */ \ |
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"vxfs", /* 32 */ \ |
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"vxodm", /* 33 */ \ |
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"udf", /* 34 */ \ |
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"nfs4", /* 35 */ \ |
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"rfs4", /* 36 */ \ |
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"cifs" /* 37 */ \ |
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} |
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static char *VALID_FS_TYPES[MNT_AIXLAST + 1] = KNOWN_VALID_FS_TYPES; |
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extern int mntctl(int, int, void *); |
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#endif |
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|
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#ifdef WIN32 |
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#include "win32.h" |
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/*#define VALID_FS_TYPES {"NTFS", "FAT", "FAT32"} unused*/ |
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#define BUFSIZE 512 |
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#endif |
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|
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#ifdef ALLBSD |
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#define SG_MP_FSTYPENAME(mp) (mp)->f_fstypename |
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#define SG_MP_DEVNAME(mp) (mp)->f_mntfromname |
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#define SG_MP_MOUNTP(mp) (mp)->f_mntonname |
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#define SG_FS_FRSIZE(fs) (long long) (*(fs))->f_bsize |
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#define SG_FS_BSIZE(fs) (long long) (*(fs))->f_iosize |
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#define SG_FS_BLOCKS(fs) (long long) (*(fs))->f_blocks |
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#define SG_FS_BFREE(fs) (long long) (*(fs))->f_bfree |
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#define SG_FS_BAVAIL(fs) (long long) (*(fs))->f_bavail |
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#define SG_FS_FILES(fs) (long long) (*(fs))->f_files |
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#define SG_FS_FFREE(fs) (long long) (*(fs))->f_ffree |
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#define SG_FS_FAVAIL(fs) -1LL |
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#endif |
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#if defined(LINUX) || defined(CYGWIN) || defined(HPUX) |
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#define SG_MP_FSTYPENAME(mp) (mp)->mnt_type |
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#define SG_MP_DEVNAME(mp) (mp)->mnt_fsname |
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#define SG_MP_MOUNTP(mp) (mp)->mnt_dir |
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#define SG_FS_FRSIZE(fs) (long long) (fs).f_frsize |
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#define SG_FS_BSIZE(fs) (long long) (fs).f_bsize |
180 |
#define SG_FS_BLOCKS(fs) (long long) (fs).f_blocks |
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#define SG_FS_BFREE(fs) (long long) (fs).f_bfree |
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#define SG_FS_BAVAIL(fs) (long long) (fs).f_bavail |
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#define SG_FS_FILES(fs) (long long) (fs).f_files |
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#define SG_FS_FFREE(fs) (long long) (fs).f_ffree |
185 |
#define SG_FS_FAVAIL(fs) (long long) (fs).f_favail |
186 |
#endif |
187 |
#ifdef SOLARIS |
188 |
#define SG_MP_FSTYPENAME(mp) (mp).mnt_fstype |
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#define SG_MP_DEVNAME(mp) (mp).mnt_special |
190 |
#define SG_MP_MOUNTP(mp) (mp).mnt_mountp |
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#define SG_FS_FRSIZE(fs) (long long) (fs).f_frsize |
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#define SG_FS_BSIZE(fs) (long long) (fs).f_bsize |
193 |
#define SG_FS_BLOCKS(fs) (long long) (fs).f_blocks |
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#define SG_FS_BFREE(fs) (long long) (fs).f_bfree |
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#define SG_FS_BAVAIL(fs) (long long) (fs).f_bavail |
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#define SG_FS_FILES(fs) (long long) (fs).f_files |
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#define SG_FS_FFREE(fs) (long long) (fs).f_ffree |
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#define SG_FS_FAVAIL(fs) (long long) (fs).f_favail |
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#endif |
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#ifdef AIX |
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#define SG_MP_FSTYPENAME(mp) VALID_FS_TYPES[(mp)->vmt_gfstype] |
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#define SG_MP_DEVNAME(mp) vmt2dataptr((mp),0) |
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#define SG_MP_MOUNTP(mp) vmt2dataptr((mp),1) |
204 |
#define SG_FS_FRSIZE(fs) (fs).f_fsize |
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#define SG_FS_BSIZE(fs) (fs).f_blocks |
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#define SG_FS_BLOCKS(fs) (fs).f_blocks |
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#define SG_FS_BFREE(fs) (fs).f_bfree |
208 |
#define SG_FS_BAVAIL(fs) (fs).f_bavail |
209 |
#define SG_FS_FILES(fs) (fs).f_files |
210 |
#define SG_FS_FFREE(fs) (fs).f_ffree |
211 |
#define SG_FS_FAVAIL(fs) ((fs).f_files - (fs).f_ffree) |
212 |
#endif |
213 |
|
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static void disk_stat_init(sg_fs_stats *d) { |
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d->device_name = NULL; |
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d->fs_type = NULL; |
217 |
d->mnt_point = NULL; |
218 |
} |
219 |
|
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static void disk_stat_destroy(sg_fs_stats *d) { |
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free(d->device_name); |
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free(d->fs_type); |
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free(d->mnt_point); |
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} |
225 |
|
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static int valid_fs_types_initialized = 0; |
227 |
|
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static int init_valid_fs_types() { |
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#if defined(FREEBSD) || defined(DFBSD) |
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struct xvfsconf *xvfsp; |
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size_t buflen; |
232 |
int nbvfs = 0; |
233 |
|
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if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) { |
235 |
sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME, "vfs.conflist"); |
236 |
return 0; |
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} |
238 |
xvfsp = alloca(buflen); |
239 |
if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) { |
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sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME, "vfs.conflist"); |
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return 0; |
242 |
} |
243 |
n_valid_fs_types = buflen / sizeof(struct xvfsconf); |
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VALID_FS_TYPES = malloc( n_valid_fs_types * sizeof(char **) ); |
245 |
if( 0 == VALID_FS_TYPES ) { |
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sg_set_error_with_errno(SG_ERROR_MALLOC, "init_valid_fs_types"); |
247 |
return 0; |
248 |
} |
249 |
for (i = 0; i < n_valid_fs_types; i++) { |
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VALID_FS_TYPES[i] = strdup(xvfsp[i].vfc_name); |
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} |
252 |
#elif defined(AIX) |
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FILE *fh; |
254 |
|
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fh = fopen("/etc/vfs", "r"); |
256 |
if( 0 != fh ) { |
257 |
char line[4096]; |
258 |
|
259 |
while( fgets( line, 4096, fh ) ) { |
260 |
char fstype[16], mnt_helper[PATH_MAX], filesys_helper[PATH_MAX], remote[16]; |
261 |
int fstype_id; |
262 |
if( line[0] < 'a' || line[0] > 'z' ) { |
263 |
continue; /* not a valid fstype */ |
264 |
} |
265 |
sscanf(line, "%s %d %s %s %s", fstype, &fstype_id, mnt_helper, filesys_helper, remote); |
266 |
if( VALID_FS_TYPES[fstype_id] != NULL ) { |
267 |
continue; /* we already know you ... */ |
268 |
} |
269 |
VALID_FS_TYPES[fstype_id] = strdup(fstype); |
270 |
} |
271 |
|
272 |
fclose(fh); |
273 |
} |
274 |
return 1; |
275 |
#else |
276 |
return 1; |
277 |
#endif |
278 |
} |
279 |
|
280 |
#ifndef WIN32 /* not used by WIN32, so stop compiler throwing warnings */ |
281 |
static int is_valid_fs_type(const char *type) { |
282 |
size_t i; |
283 |
#if defined(AIX) |
284 |
char **types = VALID_FS_TYPES; |
285 |
size_t n_valid_fs_types = sizeof VALID_FS_TYPES / sizeof *VALID_FS_TYPES; |
286 |
#elif !defined(FREEBSD) && !defined(DFBSD) |
287 |
const char *types[] = VALID_FS_TYPES; |
288 |
size_t n_valid_fs_types = sizeof types / sizeof *types; |
289 |
#else |
290 |
char **types = VALID_FS_TYPES; |
291 |
#endif |
292 |
|
293 |
for (i = 0; i < n_valid_fs_types; i++) { |
294 |
if( types[i] == NULL) { |
295 |
continue; |
296 |
} |
297 |
if (strcmp(types[i], type) == 0) { |
298 |
return 1; |
299 |
} |
300 |
} |
301 |
|
302 |
return 0; |
303 |
} |
304 |
#endif |
305 |
|
306 |
sg_fs_stats *sg_get_fs_stats(int *entries){ |
307 |
VECTOR_DECLARE_STATIC(disk_stats, sg_fs_stats, 10, |
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disk_stat_init, disk_stat_destroy); |
309 |
|
310 |
int num_disks=0; |
311 |
#if defined(LINUX) || defined (SOLARIS) || defined(CYGWIN) || defined(HPUX) |
312 |
FILE *f; |
313 |
#endif |
314 |
|
315 |
sg_fs_stats *disk_ptr; |
316 |
|
317 |
#ifdef SOLARIS |
318 |
struct mnttab mp; |
319 |
struct statvfs fs; |
320 |
#endif |
321 |
#if defined(LINUX) || defined(CYGWIN) || defined(HPUX) |
322 |
struct mntent *mp; |
323 |
struct statvfs fs; |
324 |
#endif |
325 |
#ifdef ALLBSD |
326 |
int nummnt; |
327 |
#ifdef HAVE_STATVFS |
328 |
struct statvfs *mp, **fs; |
329 |
#else |
330 |
struct statfs *mp, **fs; |
331 |
#endif |
332 |
#endif |
333 |
#ifdef WIN32 |
334 |
char lp_buf[MAX_PATH]; |
335 |
char volume_name_buf[BUFSIZE]; |
336 |
char filesys_name_buf[BUFSIZE]; |
337 |
char drive[4] = " :\\"; |
338 |
char *p; |
339 |
lp_buf[0]='\0'; |
340 |
#endif |
341 |
#ifdef AIX |
342 |
struct vmount *buf, *mp; |
343 |
int rc, i; |
344 |
size_t bufsize = 4096; |
345 |
struct statfs64 fs; |
346 |
#endif |
347 |
|
348 |
if( !valid_fs_types_initialized ) { |
349 |
init_valid_fs_types(); |
350 |
valid_fs_types_initialized = 1; |
351 |
} |
352 |
|
353 |
#ifdef ALLBSD |
354 |
nummnt=getmntinfo(&mp, MNT_WAIT); |
355 |
if (nummnt<=0){ |
356 |
sg_set_error_with_errno(SG_ERROR_GETMNTINFO, NULL); |
357 |
return NULL; |
358 |
} |
359 |
for(fs = ∓ nummnt--; (*fs)++){ |
360 |
#endif |
361 |
|
362 |
#if defined(LINUX) || defined(CYGWIN) || defined(HPUX) |
363 |
#ifdef MNT_MNTTAB |
364 |
if ((f=setmntent(MNT_MNTTAB, "r" ))==NULL){ |
365 |
#else |
366 |
if ((f=setmntent("/etc/mtab", "r" ))==NULL){ |
367 |
#endif |
368 |
sg_set_error(SG_ERROR_SETMNTENT, NULL); |
369 |
return NULL; |
370 |
} |
371 |
|
372 |
while((mp=getmntent(f))){ |
373 |
if((statvfs(mp->mnt_dir, &fs)) !=0){ |
374 |
continue; |
375 |
} |
376 |
|
377 |
#endif |
378 |
|
379 |
#ifdef SOLARIS |
380 |
if ((f=fopen("/etc/mnttab", "r" ))==NULL){ |
381 |
sg_set_error_with_errno(SG_ERROR_OPEN, "/etc/mnttab"); |
382 |
return NULL; |
383 |
} |
384 |
while((getmntent(f, &mp)) == 0){ |
385 |
if ((statvfs(mp.mnt_mountp, &fs)) !=0){ |
386 |
continue; |
387 |
} |
388 |
#endif |
389 |
|
390 |
#ifdef AIX |
391 |
buf = malloc( bufsize ); |
392 |
if( 0 == buf ) { |
393 |
sg_set_error_with_errno(SG_ERROR_MALLOC, "mntctl"); |
394 |
return NULL; |
395 |
} |
396 |
|
397 |
rc = mntctl( MCTL_QUERY, bufsize, buf ); |
398 |
if( 0 == rc ) |
399 |
{ |
400 |
bufsize = buf->vmt_revision; |
401 |
void *newbuf = realloc( buf, bufsize ); |
402 |
if( 0 == newbuf ) { |
403 |
sg_set_error_with_errno(SG_ERROR_MALLOC, "mntctl"); |
404 |
free(buf); |
405 |
return NULL; |
406 |
} |
407 |
buf = newbuf; |
408 |
|
409 |
rc = mntctl( MCTL_QUERY, bufsize, buf ); |
410 |
} |
411 |
|
412 |
if( -1 == rc ) { |
413 |
sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME, "mntctl"); |
414 |
return NULL; |
415 |
} |
416 |
|
417 |
for( i = 0, mp = buf; |
418 |
i < rc; |
419 |
++i, mp = (struct vmount *)(((char *)mp) + mp->vmt_length ) ) |
420 |
{ |
421 |
int fd; |
422 |
if((fd = open(vmt2dataptr((mp),1), O_RDONLY)) == -1) { |
423 |
continue; |
424 |
} |
425 |
if(fstatfs64(fd, &fs) == -1) { |
426 |
continue; |
427 |
} |
428 |
|
429 |
#endif |
430 |
|
431 |
#ifdef WIN32 |
432 |
if (!(GetLogicalDriveStrings(BUFSIZE-1, lp_buf))) { |
433 |
sg_set_error(SG_ERROR_GETMNTINFO, "GetLogicalDriveStrings"); |
434 |
return NULL; |
435 |
} |
436 |
p = lp_buf; |
437 |
do { |
438 |
// Copy drive letter to template string |
439 |
*drive = *p; |
440 |
// Only interested in harddrives. |
441 |
int drive_type = GetDriveType(drive); |
442 |
|
443 |
if(drive_type == DRIVE_FIXED) { |
444 |
#else |
445 |
if(is_valid_fs_type(SG_MP_FSTYPENAME(mp))){ |
446 |
#endif |
447 |
if (VECTOR_RESIZE(disk_stats, num_disks + 1) < 0) { |
448 |
return NULL; |
449 |
} |
450 |
disk_ptr=disk_stats+num_disks; |
451 |
|
452 |
#ifndef WIN32 |
453 |
/* Maybe make this char[bigenough] and do strncpy's and put a null in the end? |
454 |
* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob |
455 |
* be upwards of a k each |
456 |
*/ |
457 |
if (sg_update_string(&disk_ptr->device_name, SG_MP_DEVNAME(mp)) < 0) { |
458 |
return NULL; |
459 |
} |
460 |
if (sg_update_string(&disk_ptr->fs_type, SG_MP_FSTYPENAME(mp)) < 0) { |
461 |
return NULL; |
462 |
} |
463 |
if (sg_update_string(&disk_ptr->mnt_point, SG_MP_MOUNTP(mp)) < 0) { |
464 |
return NULL; |
465 |
} |
466 |
|
467 |
disk_ptr->size = SG_FS_FRSIZE(fs) * SG_FS_BLOCKS(fs); |
468 |
disk_ptr->avail = SG_FS_FRSIZE(fs) * SG_FS_BAVAIL(fs); |
469 |
disk_ptr->used = (disk_ptr->size) - (SG_FS_FRSIZE(fs) * SG_FS_BFREE(fs)); |
470 |
|
471 |
disk_ptr->total_inodes = SG_FS_FILES(fs); |
472 |
disk_ptr->free_inodes = SG_FS_FFREE(fs); |
473 |
/* Linux, FreeBSD don't have a "available" inodes */ |
474 |
disk_ptr->used_inodes = disk_ptr->total_inodes - disk_ptr->free_inodes; |
475 |
disk_ptr->avail_inodes = SG_FS_FAVAIL(fs); |
476 |
|
477 |
disk_ptr->io_size = SG_FS_BSIZE(fs); |
478 |
disk_ptr->block_size = SG_FS_FRSIZE(fs); |
479 |
disk_ptr->total_blocks = SG_FS_BLOCKS(fs); |
480 |
disk_ptr->free_blocks = SG_FS_BFREE(fs); |
481 |
disk_ptr->avail_blocks = SG_FS_BAVAIL(fs); |
482 |
disk_ptr->used_blocks = disk_ptr->total_blocks - disk_ptr->free_blocks; |
483 |
#else |
484 |
if(!GetVolumeInformation(drive, volume_name_buf, BUFSIZE, |
485 |
NULL, NULL, NULL, |
486 |
filesys_name_buf, BUFSIZE)) { |
487 |
sg_set_error_with_errno(SG_ERROR_DISKINFO, |
488 |
"GetVolumeInformation"); |
489 |
return NULL; |
490 |
} |
491 |
|
492 |
if (sg_update_string(&disk_ptr->device_name, |
493 |
volume_name_buf) < 0) { |
494 |
return NULL; |
495 |
} |
496 |
if (sg_update_string(&disk_ptr->fs_type, |
497 |
filesys_name_buf) < 0) { |
498 |
return NULL; |
499 |
} |
500 |
if (sg_update_string(&disk_ptr->mnt_point, |
501 |
drive) < 0) { |
502 |
return NULL; |
503 |
} |
504 |
if (!GetDiskFreeSpaceEx(drive, NULL, |
505 |
(PULARGE_INTEGER)&disk_ptr->size, |
506 |
(PULARGE_INTEGER)&disk_ptr->avail)) { |
507 |
sg_set_error_with_errno(SG_ERROR_DISKINFO, |
508 |
"GetDiskFreeSpaceEx"); |
509 |
return NULL; |
510 |
} |
511 |
disk_ptr->used = disk_ptr->size - disk_ptr->avail; |
512 |
disk_ptr->total_inodes = 0; |
513 |
disk_ptr->free_inodes = 0; |
514 |
disk_ptr->used_inodes = 0; |
515 |
disk_ptr->avail_inodes = 0; |
516 |
|
517 |
/* I dunno what to do with these... so have nothing */ |
518 |
disk_ptr->io_size = 0; |
519 |
disk_ptr->block_size = 0; |
520 |
disk_ptr->total_blocks = 0; |
521 |
disk_ptr->free_blocks = 0; |
522 |
disk_ptr->avail_blocks = 0; |
523 |
disk_ptr->used_blocks = 0; |
524 |
#endif |
525 |
num_disks++; |
526 |
} |
527 |
#ifdef WIN32 |
528 |
while(*p++); |
529 |
} while(*p); |
530 |
#else |
531 |
} |
532 |
#endif |
533 |
|
534 |
*entries=num_disks; |
535 |
|
536 |
/* If this fails, there is very little i can do about it, so |
537 |
I'll ignore it :) */ |
538 |
#if defined(LINUX) || defined(CYGWIN) || defined(HPUX) |
539 |
endmntent(f); |
540 |
#endif |
541 |
#if defined(SOLARIS) |
542 |
fclose(f); |
543 |
#endif |
544 |
|
545 |
return disk_stats; |
546 |
|
547 |
} |
548 |
|
549 |
int sg_fs_compare_device_name(const void *va, const void *vb) { |
550 |
const sg_fs_stats *a = (const sg_fs_stats *)va; |
551 |
const sg_fs_stats *b = (const sg_fs_stats *)vb; |
552 |
|
553 |
return strcmp(a->device_name, b->device_name); |
554 |
} |
555 |
|
556 |
int sg_fs_compare_mnt_point(const void *va, const void *vb) { |
557 |
const sg_fs_stats *a = (const sg_fs_stats *)va; |
558 |
const sg_fs_stats *b = (const sg_fs_stats *)vb; |
559 |
|
560 |
return strcmp(a->mnt_point, b->mnt_point); |
561 |
} |
562 |
|
563 |
static void diskio_stat_init(sg_disk_io_stats *d) { |
564 |
d->disk_name = NULL; |
565 |
} |
566 |
|
567 |
static void diskio_stat_destroy(sg_disk_io_stats *d) { |
568 |
free(d->disk_name); |
569 |
} |
570 |
|
571 |
VECTOR_DECLARE_STATIC(diskio_stats, sg_disk_io_stats, 10, |
572 |
diskio_stat_init, diskio_stat_destroy); |
573 |
|
574 |
#ifdef LINUX |
575 |
typedef struct { |
576 |
int major; |
577 |
int minor; |
578 |
} partition; |
579 |
#endif |
580 |
|
581 |
sg_disk_io_stats *sg_get_disk_io_stats(int *entries){ |
582 |
int num_diskio; |
583 |
#ifndef LINUX |
584 |
sg_disk_io_stats *diskio_stats_ptr; |
585 |
#endif |
586 |
|
587 |
#ifdef HPUX |
588 |
long long rbytes = 0, wbytes = 0; |
589 |
struct dirent *dinfo = NULL; |
590 |
struct stat lstatinfo; |
591 |
struct pst_diskinfo pstat_diskinfo[DISK_BATCH]; |
592 |
char fullpathbuf[1024] = {0}; |
593 |
dev_t diskid; |
594 |
DIR *dh = NULL; |
595 |
int diskidx = 0; |
596 |
int num, i; |
597 |
#endif |
598 |
#ifdef SOLARIS |
599 |
kstat_ctl_t *kc; |
600 |
kstat_t *ksp; |
601 |
kstat_io_t kios; |
602 |
#endif |
603 |
#ifdef LINUX |
604 |
FILE *f; |
605 |
char *line_ptr; |
606 |
int major, minor; |
607 |
int has_pp_stats = 1; |
608 |
VECTOR_DECLARE_STATIC(parts, partition, 16, NULL, NULL); |
609 |
int i, n; |
610 |
time_t now; |
611 |
const char *format; |
612 |
static regex_t not_part_re, part_re; |
613 |
static int re_compiled = 0; |
614 |
#endif |
615 |
#if defined(FREEBSD) || defined(DFBSD) |
616 |
static struct statinfo stats; |
617 |
static int stats_init = 0; |
618 |
int counter; |
619 |
struct device_selection *dev_sel = NULL; |
620 |
int n_selected, n_selections; |
621 |
long sel_gen; |
622 |
struct devstat *dev_ptr; |
623 |
#endif |
624 |
#ifdef NETBSD |
625 |
struct disk_sysctl *stats; |
626 |
#endif |
627 |
#ifdef OPENBSD |
628 |
int diskcount; |
629 |
char *disknames, *name, *bufpp; |
630 |
char **dk_name; |
631 |
struct diskstats *stats; |
632 |
#endif |
633 |
#ifdef NETBSD |
634 |
#define MIBSIZE 3 |
635 |
#endif |
636 |
#ifdef OPENBSD |
637 |
#define MIBSIZE 2 |
638 |
#endif |
639 |
#if defined(NETBSD) || defined(OPENBSD) |
640 |
int num_disks, i; |
641 |
int mib[MIBSIZE]; |
642 |
size_t size; |
643 |
#endif |
644 |
#ifdef AIX |
645 |
int ret, disks; |
646 |
perfstat_disk_t *dskperf; |
647 |
perfstat_id_t name; |
648 |
#endif |
649 |
#ifdef WIN32 |
650 |
char *name; |
651 |
long long rbytes; |
652 |
long long wbytes; |
653 |
#endif |
654 |
|
655 |
num_diskio=0; |
656 |
|
657 |
#ifdef AIX |
658 |
/* check how many perfstat_disk_t structures are available */ |
659 |
disks = perfstat_disk(NULL, NULL, sizeof(perfstat_disk_t), 0); |
660 |
if(disks==-1) { |
661 |
sg_set_error_with_errno(SG_ERROR_PSTAT, "perfstat_disk(NULL)"); |
662 |
return NULL; |
663 |
} |
664 |
|
665 |
dskperf = malloc( sizeof(perfstat_disk_t) * disks); |
666 |
if( 0 == dskperf ) { |
667 |
sg_set_error_with_errno(SG_ERROR_MALLOC, "sg_get_disk_io_stats"); |
668 |
return NULL; |
669 |
} |
670 |
|
671 |
name.name[0]=0; |
672 |
ret = perfstat_disk(&name, dskperf, sizeof(perfstat_disk_t), disks); |
673 |
if(ret == -1) { |
674 |
sg_set_error_with_errno(SG_ERROR_PSTAT, "perfstat_disk"); |
675 |
return NULL; |
676 |
} |
677 |
|
678 |
for (num_diskio = 0; num_diskio < ret; num_diskio++) { |
679 |
|
680 |
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
681 |
return NULL; |
682 |
} |
683 |
|
684 |
diskio_stats_ptr = diskio_stats + num_diskio; |
685 |
|
686 |
diskio_stats_ptr->read_bytes = dskperf[num_diskio].bsize * dskperf[num_diskio].rblks; |
687 |
diskio_stats_ptr->write_bytes = dskperf[num_diskio].bsize * dskperf[num_diskio].wblks; |
688 |
diskio_stats_ptr->systime = dskperf[num_diskio].time; |
689 |
|
690 |
if (diskio_stats_ptr->disk_name == NULL) { |
691 |
int i; |
692 |
for(i = 0; i < IDENTIFIER_LENGTH; ++i) { |
693 |
char *s = dskperf[num_diskio].name + i; |
694 |
if( !(isalpha(*s) || isdigit(*s) || |
695 |
*s == '-' || *s == '_' || *s == ' ') ) { |
696 |
*s = 0; |
697 |
break; |
698 |
} |
699 |
} |
700 |
if (sg_update_string(&diskio_stats_ptr->disk_name, dskperf[num_diskio].name) < 0) { |
701 |
return NULL; |
702 |
} |
703 |
} |
704 |
} |
705 |
#endif |
706 |
|
707 |
#ifdef HPUX |
708 |
while (1) { |
709 |
num = pstat_getdisk(pstat_diskinfo, sizeof pstat_diskinfo[0], |
710 |
DISK_BATCH, diskidx); |
711 |
if (num == -1) { |
712 |
sg_set_error_with_errno(SG_ERROR_PSTAT, |
713 |
"pstat_getdisk"); |
714 |
return NULL; |
715 |
} else if (num == 0) { |
716 |
break; |
717 |
} |
718 |
|
719 |
for (i = 0; i < num; i++) { |
720 |
struct pst_diskinfo *di = &pstat_diskinfo[i]; |
721 |
|
722 |
/* Skip "disabled" disks. */ |
723 |
if (di->psd_status == 0) { |
724 |
continue; |
725 |
} |
726 |
|
727 |
/* We can't seperate the reads from the writes, we'll |
728 |
* just give the same to each. (This value is in |
729 |
* 64-byte chunks according to the pstat header file, |
730 |
* and can wrap to be negative.) |
731 |
*/ |
732 |
rbytes = wbytes = ((unsigned long) di->psd_dkwds) * 64LL; |
733 |
|
734 |
/* Skip unused disks. */ |
735 |
if (rbytes == 0 && wbytes == 0) { |
736 |
continue; |
737 |
} |
738 |
|
739 |
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
740 |
return NULL; |
741 |
} |
742 |
|
743 |
diskio_stats_ptr = diskio_stats + num_diskio; |
744 |
|
745 |
diskio_stats_ptr->read_bytes = rbytes; |
746 |
diskio_stats_ptr->write_bytes = wbytes; |
747 |
|
748 |
diskio_stats_ptr->systime = time(NULL); |
749 |
|
750 |
num_diskio++; |
751 |
|
752 |
/* FIXME This should use a static cache, like the Linux |
753 |
* code below. */ |
754 |
if (diskio_stats_ptr->disk_name == NULL) { |
755 |
dh = opendir("/dev/dsk"); |
756 |
if (dh == NULL) { |
757 |
continue; |
758 |
} |
759 |
|
760 |
diskid = (di->psd_dev.psd_major << 24) | di->psd_dev.psd_minor; |
761 |
while (1) { |
762 |
dinfo = readdir(dh); |
763 |
if (dinfo == NULL) { |
764 |
break; |
765 |
} |
766 |
snprintf(fullpathbuf, sizeof(fullpathbuf), "/dev/dsk/%s", dinfo->d_name); |
767 |
if (lstat(fullpathbuf, &lstatinfo) < 0) { |
768 |
continue; |
769 |
} |
770 |
|
771 |
if (lstatinfo.st_rdev == diskid) { |
772 |
if (sg_update_string(&diskio_stats_ptr->disk_name, dinfo->d_name) < 0) { |
773 |
return NULL; |
774 |
} |
775 |
break; |
776 |
} |
777 |
} |
778 |
closedir(dh); |
779 |
|
780 |
if (diskio_stats_ptr->disk_name == NULL) { |
781 |
if (sg_update_string(&diskio_stats_ptr->disk_name, di->psd_hw_path.psh_name) < 0) { |
782 |
return NULL; |
783 |
} |
784 |
} |
785 |
} |
786 |
} |
787 |
diskidx = pstat_diskinfo[num - 1].psd_idx + 1; |
788 |
} |
789 |
#endif |
790 |
#ifdef OPENBSD |
791 |
mib[0] = CTL_HW; |
792 |
mib[1] = HW_DISKCOUNT; |
793 |
|
794 |
size = sizeof(diskcount); |
795 |
if (sysctl(mib, MIBSIZE, &diskcount, &size, NULL, 0) < 0) { |
796 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKCOUNT"); |
797 |
return NULL; |
798 |
} |
799 |
|
800 |
mib[0] = CTL_HW; |
801 |
mib[1] = HW_DISKNAMES; |
802 |
|
803 |
if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) { |
804 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES"); |
805 |
return NULL; |
806 |
} |
807 |
|
808 |
disknames = sg_malloc(size); |
809 |
if (disknames == NULL) { |
810 |
return NULL; |
811 |
} |
812 |
|
813 |
if (sysctl(mib, MIBSIZE, disknames, &size, NULL, 0) < 0) { |
814 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES"); |
815 |
return NULL; |
816 |
} |
817 |
|
818 |
dk_name = sg_malloc(diskcount * sizeof(char *)); |
819 |
bufpp = disknames; |
820 |
for (i = 0; i < diskcount && (name = strsep(&bufpp, ",")) != NULL; i++) { |
821 |
dk_name[i] = name; |
822 |
} |
823 |
#endif |
824 |
|
825 |
#if defined(NETBSD) || defined(OPENBSD) |
826 |
mib[0] = CTL_HW; |
827 |
mib[1] = HW_DISKSTATS; |
828 |
#ifdef NETBSD |
829 |
mib[2] = sizeof(struct disk_sysctl); |
830 |
#endif |
831 |
|
832 |
if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) { |
833 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS"); |
834 |
return NULL; |
835 |
} |
836 |
|
837 |
#ifdef NETBSD |
838 |
num_disks = size / sizeof(struct disk_sysctl); |
839 |
#else |
840 |
num_disks = size / sizeof(struct diskstats); |
841 |
#endif |
842 |
|
843 |
stats = sg_malloc(size); |
844 |
if (stats == NULL) { |
845 |
return NULL; |
846 |
} |
847 |
|
848 |
if (sysctl(mib, MIBSIZE, stats, &size, NULL, 0) < 0) { |
849 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS"); |
850 |
return NULL; |
851 |
} |
852 |
|
853 |
for (i = 0; i < num_disks; i++) { |
854 |
const char *name; |
855 |
u_int64_t rbytes, wbytes; |
856 |
|
857 |
#ifdef NETBSD |
858 |
#ifdef HAVE_DK_RBYTES |
859 |
rbytes = stats[i].dk_rbytes; |
860 |
wbytes = stats[i].dk_wbytes; |
861 |
#else |
862 |
/* Before 2.0, NetBSD merged reads and writes. */ |
863 |
rbytes = wbytes = stats[i].dk_bytes; |
864 |
#endif |
865 |
#else |
866 |
#ifdef HAVE_DS_RBYTES |
867 |
rbytes = stats[i].ds_rbytes; |
868 |
wbytes = stats[i].ds_wbytes; |
869 |
#else |
870 |
/* Before 3.5, OpenBSD merged reads and writes */ |
871 |
rbytes = wbytes = stats[i].ds_bytes; |
872 |
#endif |
873 |
#endif |
874 |
|
875 |
/* Don't keep stats for disks that have never been used. */ |
876 |
if (rbytes == 0 && wbytes == 0) { |
877 |
continue; |
878 |
} |
879 |
|
880 |
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
881 |
return NULL; |
882 |
} |
883 |
diskio_stats_ptr = diskio_stats + num_diskio; |
884 |
|
885 |
diskio_stats_ptr->read_bytes = rbytes; |
886 |
diskio_stats_ptr->write_bytes = wbytes; |
887 |
#ifdef NETBSD |
888 |
name = stats[i].dk_name; |
889 |
#else |
890 |
name = dk_name[i]; |
891 |
#endif |
892 |
if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) { |
893 |
return NULL; |
894 |
} |
895 |
diskio_stats_ptr->systime = time(NULL); |
896 |
|
897 |
num_diskio++; |
898 |
} |
899 |
|
900 |
free(stats); |
901 |
#ifdef OPENBSD |
902 |
free(dk_name); |
903 |
free(disknames); |
904 |
#endif |
905 |
#endif |
906 |
|
907 |
#if defined(FREEBSD) || defined(DFBSD) |
908 |
if (!stats_init) { |
909 |
stats.dinfo=sg_malloc(sizeof(struct devinfo)); |
910 |
if(stats.dinfo==NULL) return NULL; |
911 |
bzero(stats.dinfo, sizeof(struct devinfo)); |
912 |
stats_init = 1; |
913 |
} |
914 |
#ifdef FREEBSD5 |
915 |
if ((devstat_getdevs(NULL, &stats)) < 0) { |
916 |
/* FIXME devstat functions return a string error in |
917 |
devstat_errbuf */ |
918 |
sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL); |
919 |
return NULL; |
920 |
} |
921 |
/* Not aware of a get all devices, so i said 999. If we ever |
922 |
* find a machine with more than 999 disks, then i'll change |
923 |
* this number :) |
924 |
*/ |
925 |
if (devstat_selectdevs(&dev_sel, &n_selected, &n_selections, &sel_gen, stats.dinfo->generation, stats.dinfo->devices, stats.dinfo->numdevs, NULL, 0, NULL, 0, DS_SELECT_ONLY, 999, 1) < 0) { |
926 |
sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL); |
927 |
return NULL; |
928 |
} |
929 |
#else |
930 |
if ((getdevs(&stats)) < 0) { |
931 |
sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL); |
932 |
return NULL; |
933 |
} |
934 |
/* Not aware of a get all devices, so i said 999. If we ever |
935 |
* find a machine with more than 999 disks, then i'll change |
936 |
* this number :) |
937 |
*/ |
938 |
if (selectdevs(&dev_sel, &n_selected, &n_selections, &sel_gen, stats.dinfo->generation, stats.dinfo->devices, stats.dinfo->numdevs, NULL, 0, NULL, 0, DS_SELECT_ONLY, 999, 1) < 0) { |
939 |
sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL); |
940 |
return NULL; |
941 |
} |
942 |
#endif |
943 |
|
944 |
for(counter=0;counter<stats.dinfo->numdevs;counter++){ |
945 |
dev_ptr=&stats.dinfo->devices[dev_sel[counter].position]; |
946 |
|
947 |
/* Throw away devices that have done nothing, ever.. Eg "odd" |
948 |
* devices.. like mem, proc.. and also doesn't report floppy |
949 |
* drives etc unless they are doing stuff :) |
950 |
*/ |
951 |
#ifdef FREEBSD5 |
952 |
if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue; |
953 |
#else |
954 |
if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue; |
955 |
#endif |
956 |
|
957 |
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
958 |
return NULL; |
959 |
} |
960 |
diskio_stats_ptr=diskio_stats+num_diskio; |
961 |
|
962 |
#ifdef FREEBSD5 |
963 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ]; |
964 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE]; |
965 |
#else |
966 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes_read; |
967 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes_written; |
968 |
#endif |
969 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
970 |
if (asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number) == -1) { |
971 |
sg_set_error_with_errno(SG_ERROR_ASPRINTF, NULL); |
972 |
return NULL; |
973 |
} |
974 |
diskio_stats_ptr->systime=time(NULL); |
975 |
|
976 |
num_diskio++; |
977 |
} |
978 |
free(dev_sel); |
979 |
|
980 |
#endif |
981 |
#ifdef SOLARIS |
982 |
if ((kc = kstat_open()) == NULL) { |
983 |
sg_set_error(SG_ERROR_KSTAT_OPEN, NULL); |
984 |
return NULL; |
985 |
} |
986 |
|
987 |
for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) { |
988 |
if (!strcmp(ksp->ks_class, "disk")) { |
989 |
|
990 |
if(ksp->ks_type != KSTAT_TYPE_IO) continue; |
991 |
/* We dont want metadevices appearins as num_diskio */ |
992 |
if(strcmp(ksp->ks_module, "md")==0) continue; |
993 |
if((kstat_read(kc, ksp, &kios))==-1){ |
994 |
} |
995 |
|
996 |
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
997 |
kstat_close(kc); |
998 |
return NULL; |
999 |
} |
1000 |
diskio_stats_ptr=diskio_stats+num_diskio; |
1001 |
|
1002 |
diskio_stats_ptr->read_bytes=kios.nread; |
1003 |
diskio_stats_ptr->write_bytes=kios.nwritten; |
1004 |
if (sg_update_string(&diskio_stats_ptr->disk_name, |
1005 |
sg_get_svr_from_bsd(ksp->ks_name)) < 0) { |
1006 |
kstat_close(kc); |
1007 |
return NULL; |
1008 |
} |
1009 |
diskio_stats_ptr->systime=time(NULL); |
1010 |
|
1011 |
num_diskio++; |
1012 |
} |
1013 |
} |
1014 |
|
1015 |
kstat_close(kc); |
1016 |
#endif |
1017 |
|
1018 |
#ifdef LINUX |
1019 |
num_diskio = 0; |
1020 |
n = 0; |
1021 |
|
1022 |
/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels |
1023 |
have statistics in here too, so we can use those directly. |
1024 |
2.6 kernels have /proc/diskstats instead with almost (but not quite) |
1025 |
the same format. */ |
1026 |
|
1027 |
f = fopen("/proc/diskstats", "r"); |
1028 |
format = " %d %d %99s %*d %*d %lld %*d %*d %*d %lld"; |
1029 |
if (f == NULL) { |
1030 |
f = fopen("/proc/partitions", "r"); |
1031 |
format = " %d %d %*d %99s %*d %*d %lld %*d %*d %*d %lld"; |
1032 |
} |
1033 |
if (f == NULL) goto out; |
1034 |
now = time(NULL); |
1035 |
|
1036 |
if (!re_compiled) { |
1037 |
if (regcomp(&part_re, "^(.*/)?[^/]*[0-9]$", REG_EXTENDED | REG_NOSUB) != 0) { |
1038 |
sg_set_error(SG_ERROR_PARSE, NULL); |
1039 |
goto out; |
1040 |
} |
1041 |
if (regcomp(¬_part_re, "^(.*/)?[^/0-9]+[0-9]+d[0-9]+$", REG_EXTENDED | REG_NOSUB) != 0) { |
1042 |
sg_set_error(SG_ERROR_PARSE, NULL); |
1043 |
goto out; |
1044 |
} |
1045 |
re_compiled = 1; |
1046 |
} |
1047 |
|
1048 |
while ((line_ptr = sg_f_read_line(f, "")) != NULL) { |
1049 |
char name[100]; |
1050 |
long long rsect, wsect; |
1051 |
|
1052 |
int nr = sscanf(line_ptr, format, |
1053 |
&major, &minor, name, &rsect, &wsect); |
1054 |
if (nr < 3) continue; |
1055 |
|
1056 |
/* Skip device names ending in numbers, since they're |
1057 |
partitions, unless they match the c0d0 pattern that some |
1058 |
RAID devices use. */ |
1059 |
/* FIXME: For 2.6+, we should probably be using sysfs to detect |
1060 |
this... */ |
1061 |
if ((regexec(&part_re, name, 0, NULL, 0) == 0) |
1062 |
&& (regexec(¬_part_re, name, 0, NULL, 0) != 0)) { |
1063 |
continue; |
1064 |
} |
1065 |
|
1066 |
if (nr < 5) { |
1067 |
has_pp_stats = 0; |
1068 |
rsect = 0; |
1069 |
wsect = 0; |
1070 |
} |
1071 |
|
1072 |
if (VECTOR_RESIZE(diskio_stats, n + 1) < 0) { |
1073 |
goto out; |
1074 |
} |
1075 |
if (VECTOR_RESIZE(parts, n + 1) < 0) { |
1076 |
goto out; |
1077 |
} |
1078 |
|
1079 |
if (sg_update_string(&diskio_stats[n].disk_name, name) < 0) { |
1080 |
goto out; |
1081 |
} |
1082 |
diskio_stats[n].read_bytes = rsect * 512; |
1083 |
diskio_stats[n].write_bytes = wsect * 512; |
1084 |
diskio_stats[n].systime = now; |
1085 |
parts[n].major = major; |
1086 |
parts[n].minor = minor; |
1087 |
|
1088 |
n++; |
1089 |
} |
1090 |
|
1091 |
fclose(f); |
1092 |
f = NULL; |
1093 |
|
1094 |
if (!has_pp_stats) { |
1095 |
/* This is an older kernel where /proc/partitions doesn't |
1096 |
contain stats. Read what we can from /proc/stat instead, and |
1097 |
fill in the appropriate bits of the list allocated above. */ |
1098 |
|
1099 |
f = fopen("/proc/stat", "r"); |
1100 |
if (f == NULL) goto out; |
1101 |
now = time(NULL); |
1102 |
|
1103 |
line_ptr = sg_f_read_line(f, "disk_io:"); |
1104 |
if (line_ptr == NULL) goto out; |
1105 |
|
1106 |
while((line_ptr=strchr(line_ptr, ' '))!=NULL){ |
1107 |
long long rsect, wsect; |
1108 |
|
1109 |
if (*++line_ptr == '\0') break; |
1110 |
|
1111 |
if((sscanf(line_ptr, |
1112 |
"(%d,%d):(%*d, %*d, %lld, %*d, %lld)", |
1113 |
&major, &minor, &rsect, &wsect)) != 4) { |
1114 |
continue; |
1115 |
} |
1116 |
|
1117 |
/* Find the corresponding device from earlier. |
1118 |
Just to add to the fun, "minor" is actually the disk |
1119 |
number, not the device minor, so we need to figure |
1120 |
out the real minor number based on the major! |
1121 |
This list is not exhaustive; if you're running |
1122 |
an older kernel you probably don't have fancy |
1123 |
I2O hardware anyway... */ |
1124 |
switch (major) { |
1125 |
case 3: |
1126 |
case 21: |
1127 |
case 22: |
1128 |
case 33: |
1129 |
case 34: |
1130 |
case 36: |
1131 |
case 56: |
1132 |
case 57: |
1133 |
case 88: |
1134 |
case 89: |
1135 |
case 90: |
1136 |
case 91: |
1137 |
minor *= 64; |
1138 |
break; |
1139 |
case 9: |
1140 |
case 43: |
1141 |
break; |
1142 |
default: |
1143 |
minor *= 16; |
1144 |
break; |
1145 |
} |
1146 |
for (i = 0; i < n; i++) { |
1147 |
if (major == parts[i].major |
1148 |
&& minor == parts[i].minor) |
1149 |
break; |
1150 |
} |
1151 |
if (i == n) continue; |
1152 |
|
1153 |
/* We read the number of blocks. Blocks are stored in |
1154 |
512 bytes */ |
1155 |
diskio_stats[i].read_bytes = rsect * 512; |
1156 |
diskio_stats[i].write_bytes = wsect * 512; |
1157 |
diskio_stats[i].systime = now; |
1158 |
} |
1159 |
} |
1160 |
|
1161 |
num_diskio = n; |
1162 |
out: |
1163 |
if (f != NULL) fclose(f); |
1164 |
#endif |
1165 |
|
1166 |
#ifdef CYGWIN |
1167 |
sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin"); |
1168 |
return NULL; |
1169 |
#endif |
1170 |
|
1171 |
#ifdef WIN32 |
1172 |
sg_set_error(SG_ERROR_NONE, NULL); |
1173 |
|
1174 |
while((name = get_diskio(num_diskio, &rbytes, &wbytes)) != NULL) { |
1175 |
if (VECTOR_RESIZE(diskio_stats, num_diskio+1)) { |
1176 |
return NULL; |
1177 |
} |
1178 |
|
1179 |
diskio_stats_ptr = diskio_stats + num_diskio; |
1180 |
|
1181 |
if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) { |
1182 |
return NULL; |
1183 |
} |
1184 |
sg_update_string(&name, NULL); |
1185 |
diskio_stats_ptr->read_bytes = rbytes; |
1186 |
diskio_stats_ptr->write_bytes = wbytes; |
1187 |
|
1188 |
diskio_stats_ptr->systime = 0; |
1189 |
|
1190 |
num_diskio++; |
1191 |
} |
1192 |
#endif |
1193 |
|
1194 |
*entries=num_diskio; |
1195 |
|
1196 |
return diskio_stats; |
1197 |
} |
1198 |
|
1199 |
sg_disk_io_stats *sg_get_disk_io_stats_diff(int *entries){ |
1200 |
#ifndef WIN32 |
1201 |
VECTOR_DECLARE_STATIC(diff, sg_disk_io_stats, 1, |
1202 |
diskio_stat_init, diskio_stat_destroy); |
1203 |
sg_disk_io_stats *src = NULL, *dest; |
1204 |
int i, j, diff_count, new_count; |
1205 |
|
1206 |
if (diskio_stats == NULL) { |
1207 |
/* No previous stats, so we can't calculate a difference. */ |
1208 |
return sg_get_disk_io_stats(entries); |
1209 |
} |
1210 |
|
1211 |
/* Resize the results array to match the previous stats. */ |
1212 |
diff_count = VECTOR_SIZE(diskio_stats); |
1213 |
if (VECTOR_RESIZE(diff, diff_count) < 0) { |
1214 |
return NULL; |
1215 |
} |
1216 |
|
1217 |
/* Copy the previous stats into the result. */ |
1218 |
for (i = 0; i < diff_count; i++) { |
1219 |
src = &diskio_stats[i]; |
1220 |
dest = &diff[i]; |
1221 |
|
1222 |
if (sg_update_string(&dest->disk_name, src->disk_name) < 0) { |
1223 |
return NULL; |
1224 |
} |
1225 |
dest->read_bytes = src->read_bytes; |
1226 |
dest->write_bytes = src->write_bytes; |
1227 |
dest->systime = src->systime; |
1228 |
} |
1229 |
|
1230 |
/* Get a new set of stats. */ |
1231 |
if (sg_get_disk_io_stats(&new_count) == NULL) { |
1232 |
return NULL; |
1233 |
} |
1234 |
|
1235 |
/* For each previous stat... */ |
1236 |
for (i = 0; i < diff_count; i++) { |
1237 |
dest = &diff[i]; |
1238 |
|
1239 |
/* ... find the corresponding new stat ... */ |
1240 |
for (j = 0; j < new_count; j++) { |
1241 |
/* Try the new stat in the same position first, |
1242 |
since that's most likely to be it. */ |
1243 |
src = &diskio_stats[(i + j) % new_count]; |
1244 |
if (strcmp(src->disk_name, dest->disk_name) == 0) { |
1245 |
break; |
1246 |
} |
1247 |
} |
1248 |
if (j == new_count) { |
1249 |
/* No match found. */ |
1250 |
continue; |
1251 |
} |
1252 |
|
1253 |
/* ... and subtract the previous stat from it to get the |
1254 |
difference. */ |
1255 |
dest->read_bytes = src->read_bytes - dest->read_bytes; |
1256 |
dest->write_bytes = src->write_bytes - dest->write_bytes; |
1257 |
dest->systime = src->systime - dest->systime; |
1258 |
} |
1259 |
|
1260 |
*entries = diff_count; |
1261 |
return diff; |
1262 |
#else /* WIN32 */ |
1263 |
return sg_get_disk_io_stats(entries); |
1264 |
#endif |
1265 |
} |
1266 |
|
1267 |
int sg_disk_io_compare_name(const void *va, const void *vb) { |
1268 |
const sg_disk_io_stats *a = (const sg_disk_io_stats *)va; |
1269 |
const sg_disk_io_stats *b = (const sg_disk_io_stats *)vb; |
1270 |
|
1271 |
return strcmp(a->disk_name, b->disk_name); |
1272 |
} |
1273 |
|