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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 1.84 2006/03/17 13:29:26 ats 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 |
27 |
|
28 |
#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"} |
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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", "vxfs", "hfs", "hfsplus", "hpfs", "jffs", \ |
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"jffs2", "minix", "msdos", "ntfs", "qnx4", "ramfs", \ |
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"rootfs", "reiserfs", "sysv", "v7", "udf", "ufs", \ |
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"umsdos", "vfat", "xfs", "jfs", "nfs"} |
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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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#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \ |
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"ufs", "mfs", "nfs"} |
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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 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 |
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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) (long long) (fs).f_favail |
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#endif |
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#ifdef SOLARIS |
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#define SG_MP_FSTYPENAME(mp) (mp).mnt_fstype |
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#define SG_MP_DEVNAME(mp) (mp).mnt_special |
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#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 |
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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) (long long) (fs).f_favail |
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#endif |
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|
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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; |
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d->mnt_point = NULL; |
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} |
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|
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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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} |
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|
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#ifndef WIN32 /* not used by WIN32, so stop compiler throwing warnings */ |
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static int is_valid_fs_type(const char *type) { |
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const char *types[] = VALID_FS_TYPES; |
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int i; |
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|
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for (i = 0; i < (int) (sizeof types / sizeof *types); i++) { |
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if (strcmp(types[i], type) == 0) { |
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return 1; |
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} |
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} |
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return 0; |
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} |
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#endif |
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|
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sg_fs_stats *sg_get_fs_stats(int *entries){ |
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VECTOR_DECLARE_STATIC(disk_stats, sg_fs_stats, 10, |
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disk_stat_init, disk_stat_destroy); |
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|
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int num_disks=0; |
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#if defined(LINUX) || defined (SOLARIS) || defined(CYGWIN) || defined(HPUX) |
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FILE *f; |
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#endif |
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|
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sg_fs_stats *disk_ptr; |
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|
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#ifdef SOLARIS |
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struct mnttab mp; |
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struct statvfs fs; |
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#endif |
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#if defined(LINUX) || defined(CYGWIN) || defined(HPUX) |
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struct mntent *mp; |
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struct statvfs fs; |
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#endif |
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#ifdef ALLBSD |
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int nummnt; |
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#ifdef HAVE_STATVFS |
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struct statvfs *mp, **fs; |
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#else |
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struct statfs *mp, **fs; |
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#endif |
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#endif |
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#ifdef WIN32 |
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char lp_buf[MAX_PATH]; |
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char volume_name_buf[BUFSIZE]; |
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char filesys_name_buf[BUFSIZE]; |
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char drive[4] = " :\\"; |
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char *p; |
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lp_buf[0]='\0'; |
200 |
#endif |
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|
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#ifdef ALLBSD |
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nummnt=getmntinfo(&mp, MNT_WAIT); |
204 |
if (nummnt<=0){ |
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sg_set_error_with_errno(SG_ERROR_GETMNTINFO, NULL); |
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return NULL; |
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} |
208 |
for(fs = ∓ nummnt--; (*fs)++){ |
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#endif |
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|
211 |
#if defined(LINUX) || defined(CYGWIN) || defined(HPUX) |
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#ifdef MNT_MNTTAB |
213 |
if ((f=setmntent(MNT_MNTTAB, "r" ))==NULL){ |
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#else |
215 |
if ((f=setmntent("/etc/mtab", "r" ))==NULL){ |
216 |
#endif |
217 |
sg_set_error(SG_ERROR_SETMNTENT, NULL); |
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return NULL; |
219 |
} |
220 |
|
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while((mp=getmntent(f))){ |
222 |
if((statvfs(mp->mnt_dir, &fs)) !=0){ |
223 |
continue; |
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} |
225 |
|
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#endif |
227 |
|
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#ifdef SOLARIS |
229 |
if ((f=fopen("/etc/mnttab", "r" ))==NULL){ |
230 |
sg_set_error_with_errno(SG_ERROR_OPEN, "/etc/mnttab"); |
231 |
return NULL; |
232 |
} |
233 |
while((getmntent(f, &mp)) == 0){ |
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if ((statvfs(mp.mnt_mountp, &fs)) !=0){ |
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continue; |
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} |
237 |
#endif |
238 |
|
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#ifdef WIN32 |
240 |
if (!(GetLogicalDriveStrings(BUFSIZE-1, lp_buf))) { |
241 |
sg_set_error(SG_ERROR_GETMNTINFO, "GetLogicalDriveStrings"); |
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return NULL; |
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} |
244 |
p = lp_buf; |
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do { |
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// Copy drive letter to template string |
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*drive = *p; |
248 |
// Only interested in harddrives. |
249 |
int drive_type = GetDriveType(drive); |
250 |
|
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if(drive_type == DRIVE_FIXED) { |
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#else |
253 |
if(is_valid_fs_type(SG_MP_FSTYPENAME(mp))){ |
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#endif |
255 |
if (VECTOR_RESIZE(disk_stats, num_disks + 1) < 0) { |
256 |
return NULL; |
257 |
} |
258 |
disk_ptr=disk_stats+num_disks; |
259 |
|
260 |
#ifndef WIN32 |
261 |
/* Maybe make this char[bigenough] and do strncpy's and put a null in the end? |
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* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob |
263 |
* be upwards of a k each |
264 |
*/ |
265 |
if (sg_update_string(&disk_ptr->device_name, SG_MP_DEVNAME(mp)) < 0) { |
266 |
return NULL; |
267 |
} |
268 |
if (sg_update_string(&disk_ptr->fs_type, SG_MP_FSTYPENAME(mp)) < 0) { |
269 |
return NULL; |
270 |
} |
271 |
if (sg_update_string(&disk_ptr->mnt_point, SG_MP_MOUNTP(mp)) < 0) { |
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return NULL; |
273 |
} |
274 |
|
275 |
disk_ptr->size = SG_FS_FRSIZE(fs) * SG_FS_BLOCKS(fs); |
276 |
disk_ptr->avail = SG_FS_FRSIZE(fs) * SG_FS_BAVAIL(fs); |
277 |
disk_ptr->used = (disk_ptr->size) - (SG_FS_FRSIZE(fs) * SG_FS_BFREE(fs)); |
278 |
|
279 |
disk_ptr->total_inodes = SG_FS_FILES(fs); |
280 |
disk_ptr->free_inodes = SG_FS_FFREE(fs); |
281 |
/* Linux, FreeBSD don't have a "available" inodes */ |
282 |
disk_ptr->used_inodes = disk_ptr->total_inodes - disk_ptr->free_inodes; |
283 |
disk_ptr->avail_inodes = SG_FS_FAVAIL(fs); |
284 |
|
285 |
disk_ptr->io_size = SG_FS_BSIZE(fs); |
286 |
disk_ptr->block_size = SG_FS_FRSIZE(fs); |
287 |
disk_ptr->total_blocks = SG_FS_BLOCKS(fs); |
288 |
disk_ptr->free_blocks = SG_FS_BFREE(fs); |
289 |
disk_ptr->avail_blocks = SG_FS_BAVAIL(fs); |
290 |
disk_ptr->used_blocks = disk_ptr->total_blocks - disk_ptr->free_blocks; |
291 |
#else |
292 |
if(!GetVolumeInformation(drive, volume_name_buf, BUFSIZE, |
293 |
NULL, NULL, NULL, |
294 |
filesys_name_buf, BUFSIZE)) { |
295 |
sg_set_error_with_errno(SG_ERROR_DISKINFO, |
296 |
"GetVolumeInformation"); |
297 |
return NULL; |
298 |
} |
299 |
|
300 |
if (sg_update_string(&disk_ptr->device_name, |
301 |
volume_name_buf) < 0) { |
302 |
return NULL; |
303 |
} |
304 |
if (sg_update_string(&disk_ptr->fs_type, |
305 |
filesys_name_buf) < 0) { |
306 |
return NULL; |
307 |
} |
308 |
if (sg_update_string(&disk_ptr->mnt_point, |
309 |
drive) < 0) { |
310 |
return NULL; |
311 |
} |
312 |
if (!GetDiskFreeSpaceEx(drive, NULL, |
313 |
(PULARGE_INTEGER)&disk_ptr->size, |
314 |
(PULARGE_INTEGER)&disk_ptr->avail)) { |
315 |
sg_set_error_with_errno(SG_ERROR_DISKINFO, |
316 |
"GetDiskFreeSpaceEx"); |
317 |
return NULL; |
318 |
} |
319 |
disk_ptr->used = disk_ptr->size - disk_ptr->avail; |
320 |
disk_ptr->total_inodes = 0; |
321 |
disk_ptr->free_inodes = 0; |
322 |
disk_ptr->used_inodes = 0; |
323 |
disk_ptr->avail_inodes = 0; |
324 |
|
325 |
/* I dunno what to do with these... so have nothing */ |
326 |
disk_ptr->io_size = 0; |
327 |
disk_ptr->block_size = 0; |
328 |
disk_ptr->total_blocks = 0; |
329 |
disk_ptr->free_blocks = 0; |
330 |
disk_ptr->avail_blocks = 0; |
331 |
disk_ptr->used_blocks = 0; |
332 |
#endif |
333 |
num_disks++; |
334 |
} |
335 |
#ifdef WIN32 |
336 |
while(*p++); |
337 |
} while(*p); |
338 |
#else |
339 |
} |
340 |
#endif |
341 |
|
342 |
*entries=num_disks; |
343 |
|
344 |
/* If this fails, there is very little i can do about it, so |
345 |
I'll ignore it :) */ |
346 |
#if defined(LINUX) || defined(CYGWIN) || defined(HPUX) |
347 |
endmntent(f); |
348 |
#endif |
349 |
#if defined(SOLARIS) |
350 |
fclose(f); |
351 |
#endif |
352 |
|
353 |
return disk_stats; |
354 |
|
355 |
} |
356 |
|
357 |
int sg_fs_compare_device_name(const void *va, const void *vb) { |
358 |
const sg_fs_stats *a = (const sg_fs_stats *)va; |
359 |
const sg_fs_stats *b = (const sg_fs_stats *)vb; |
360 |
|
361 |
return strcmp(a->device_name, b->device_name); |
362 |
} |
363 |
|
364 |
int sg_fs_compare_mnt_point(const void *va, const void *vb) { |
365 |
const sg_fs_stats *a = (const sg_fs_stats *)va; |
366 |
const sg_fs_stats *b = (const sg_fs_stats *)vb; |
367 |
|
368 |
return strcmp(a->mnt_point, b->mnt_point); |
369 |
} |
370 |
|
371 |
static void diskio_stat_init(sg_disk_io_stats *d) { |
372 |
d->disk_name = NULL; |
373 |
} |
374 |
|
375 |
static void diskio_stat_destroy(sg_disk_io_stats *d) { |
376 |
free(d->disk_name); |
377 |
} |
378 |
|
379 |
VECTOR_DECLARE_STATIC(diskio_stats, sg_disk_io_stats, 10, |
380 |
diskio_stat_init, diskio_stat_destroy); |
381 |
|
382 |
#ifdef LINUX |
383 |
typedef struct { |
384 |
int major; |
385 |
int minor; |
386 |
} partition; |
387 |
#endif |
388 |
|
389 |
sg_disk_io_stats *sg_get_disk_io_stats(int *entries){ |
390 |
int num_diskio; |
391 |
#ifndef LINUX |
392 |
sg_disk_io_stats *diskio_stats_ptr; |
393 |
#endif |
394 |
|
395 |
#ifdef HPUX |
396 |
long long rbytes = 0, wbytes = 0; |
397 |
struct dirent *dinfo = NULL; |
398 |
struct stat lstatinfo; |
399 |
struct pst_diskinfo pstat_diskinfo[DISK_BATCH]; |
400 |
char fullpathbuf[1024] = {0}; |
401 |
dev_t diskid; |
402 |
DIR *dh = NULL; |
403 |
int diskidx = 0; |
404 |
int num, i; |
405 |
#endif |
406 |
#ifdef SOLARIS |
407 |
kstat_ctl_t *kc; |
408 |
kstat_t *ksp; |
409 |
kstat_io_t kios; |
410 |
#endif |
411 |
#ifdef LINUX |
412 |
FILE *f; |
413 |
char *line_ptr; |
414 |
int major, minor; |
415 |
int has_pp_stats = 1; |
416 |
VECTOR_DECLARE_STATIC(parts, partition, 16, NULL, NULL); |
417 |
int i, n; |
418 |
time_t now; |
419 |
const char *format; |
420 |
static regex_t not_part_re, part_re; |
421 |
static int re_compiled = 0; |
422 |
#endif |
423 |
#if defined(FREEBSD) || defined(DFBSD) |
424 |
static struct statinfo stats; |
425 |
static int stats_init = 0; |
426 |
int counter; |
427 |
struct device_selection *dev_sel = NULL; |
428 |
int n_selected, n_selections; |
429 |
long sel_gen; |
430 |
struct devstat *dev_ptr; |
431 |
#endif |
432 |
#ifdef NETBSD |
433 |
struct disk_sysctl *stats; |
434 |
#endif |
435 |
#ifdef OPENBSD |
436 |
int diskcount; |
437 |
char *disknames, *name, *bufpp; |
438 |
char **dk_name; |
439 |
struct diskstats *stats; |
440 |
#endif |
441 |
#ifdef NETBSD |
442 |
#define MIBSIZE 3 |
443 |
#endif |
444 |
#ifdef OPENBSD |
445 |
#define MIBSIZE 2 |
446 |
#endif |
447 |
#if defined(NETBSD) || defined(OPENBSD) |
448 |
int num_disks, i; |
449 |
int mib[MIBSIZE]; |
450 |
size_t size; |
451 |
#endif |
452 |
#ifdef WIN32 |
453 |
char *name; |
454 |
long long rbytes; |
455 |
long long wbytes; |
456 |
#endif |
457 |
|
458 |
num_diskio=0; |
459 |
|
460 |
#ifdef HPUX |
461 |
while (1) { |
462 |
num = pstat_getdisk(pstat_diskinfo, sizeof pstat_diskinfo[0], |
463 |
DISK_BATCH, diskidx); |
464 |
if (num == -1) { |
465 |
sg_set_error_with_errno(SG_ERROR_PSTAT, |
466 |
"pstat_getdisk"); |
467 |
return NULL; |
468 |
} else if (num == 0) { |
469 |
break; |
470 |
} |
471 |
|
472 |
for (i = 0; i < num; i++) { |
473 |
struct pst_diskinfo *di = &pstat_diskinfo[i]; |
474 |
|
475 |
/* Skip "disabled" disks. */ |
476 |
if (di->psd_status == 0) { |
477 |
continue; |
478 |
} |
479 |
|
480 |
/* We can't seperate the reads from the writes, we'll |
481 |
* just give the same to each. (This value is in |
482 |
* 64-byte chunks according to the pstat header file, |
483 |
* and can wrap to be negative.) |
484 |
*/ |
485 |
rbytes = wbytes = ((unsigned long) di->psd_dkwds) * 64LL; |
486 |
|
487 |
/* Skip unused disks. */ |
488 |
if (rbytes == 0 && wbytes == 0) { |
489 |
continue; |
490 |
} |
491 |
|
492 |
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
493 |
return NULL; |
494 |
} |
495 |
|
496 |
diskio_stats_ptr = diskio_stats + num_diskio; |
497 |
|
498 |
diskio_stats_ptr->read_bytes = rbytes; |
499 |
diskio_stats_ptr->write_bytes = wbytes; |
500 |
|
501 |
diskio_stats_ptr->systime = time(NULL); |
502 |
|
503 |
num_diskio++; |
504 |
|
505 |
/* FIXME This should use a static cache, like the Linux |
506 |
* code below. */ |
507 |
if (diskio_stats_ptr->disk_name == NULL) { |
508 |
dh = opendir("/dev/dsk"); |
509 |
if (dh == NULL) { |
510 |
continue; |
511 |
} |
512 |
|
513 |
diskid = (di->psd_dev.psd_major << 24) | di->psd_dev.psd_minor; |
514 |
while (1) { |
515 |
dinfo = readdir(dh); |
516 |
if (dinfo == NULL) { |
517 |
break; |
518 |
} |
519 |
snprintf(fullpathbuf, sizeof(fullpathbuf), "/dev/dsk/%s", dinfo->d_name); |
520 |
if (lstat(fullpathbuf, &lstatinfo) < 0) { |
521 |
continue; |
522 |
} |
523 |
|
524 |
if (lstatinfo.st_rdev == diskid) { |
525 |
if (sg_update_string(&diskio_stats_ptr->disk_name, dinfo->d_name) < 0) { |
526 |
return NULL; |
527 |
} |
528 |
break; |
529 |
} |
530 |
} |
531 |
closedir(dh); |
532 |
|
533 |
if (diskio_stats_ptr->disk_name == NULL) { |
534 |
if (sg_update_string(&diskio_stats_ptr->disk_name, di->psd_hw_path.psh_name) < 0) { |
535 |
return NULL; |
536 |
} |
537 |
} |
538 |
} |
539 |
} |
540 |
diskidx = pstat_diskinfo[num - 1].psd_idx + 1; |
541 |
} |
542 |
#endif |
543 |
#ifdef OPENBSD |
544 |
mib[0] = CTL_HW; |
545 |
mib[1] = HW_DISKCOUNT; |
546 |
|
547 |
size = sizeof(diskcount); |
548 |
if (sysctl(mib, MIBSIZE, &diskcount, &size, NULL, 0) < 0) { |
549 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKCOUNT"); |
550 |
return NULL; |
551 |
} |
552 |
|
553 |
mib[0] = CTL_HW; |
554 |
mib[1] = HW_DISKNAMES; |
555 |
|
556 |
if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) { |
557 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES"); |
558 |
return NULL; |
559 |
} |
560 |
|
561 |
disknames = sg_malloc(size); |
562 |
if (disknames == NULL) { |
563 |
return NULL; |
564 |
} |
565 |
|
566 |
if (sysctl(mib, MIBSIZE, disknames, &size, NULL, 0) < 0) { |
567 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES"); |
568 |
return NULL; |
569 |
} |
570 |
|
571 |
dk_name = sg_malloc(diskcount * sizeof(char *)); |
572 |
bufpp = disknames; |
573 |
for (i = 0; i < diskcount && (name = strsep(&bufpp, ",")) != NULL; i++) { |
574 |
dk_name[i] = name; |
575 |
} |
576 |
#endif |
577 |
|
578 |
#if defined(NETBSD) || defined(OPENBSD) |
579 |
mib[0] = CTL_HW; |
580 |
mib[1] = HW_DISKSTATS; |
581 |
#ifdef NETBSD |
582 |
mib[2] = sizeof(struct disk_sysctl); |
583 |
#endif |
584 |
|
585 |
if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) { |
586 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS"); |
587 |
return NULL; |
588 |
} |
589 |
|
590 |
#ifdef NETBSD |
591 |
num_disks = size / sizeof(struct disk_sysctl); |
592 |
#else |
593 |
num_disks = size / sizeof(struct diskstats); |
594 |
#endif |
595 |
|
596 |
stats = sg_malloc(size); |
597 |
if (stats == NULL) { |
598 |
return NULL; |
599 |
} |
600 |
|
601 |
if (sysctl(mib, MIBSIZE, stats, &size, NULL, 0) < 0) { |
602 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS"); |
603 |
return NULL; |
604 |
} |
605 |
|
606 |
for (i = 0; i < num_disks; i++) { |
607 |
const char *name; |
608 |
u_int64_t rbytes, wbytes; |
609 |
|
610 |
#ifdef NETBSD |
611 |
#ifdef HAVE_DK_RBYTES |
612 |
rbytes = stats[i].dk_rbytes; |
613 |
wbytes = stats[i].dk_wbytes; |
614 |
#else |
615 |
/* Before 2.0, NetBSD merged reads and writes. */ |
616 |
rbytes = wbytes = stats[i].dk_bytes; |
617 |
#endif |
618 |
#else |
619 |
#ifdef HAVE_DS_RBYTES |
620 |
rbytes = stats[i].ds_rbytes; |
621 |
wbytes = stats[i].ds_wbytes; |
622 |
#else |
623 |
/* Before 3.5, OpenBSD merged reads and writes */ |
624 |
rbytes = wbytes = stats[i].ds_bytes; |
625 |
#endif |
626 |
#endif |
627 |
|
628 |
/* Don't keep stats for disks that have never been used. */ |
629 |
if (rbytes == 0 && wbytes == 0) { |
630 |
continue; |
631 |
} |
632 |
|
633 |
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
634 |
return NULL; |
635 |
} |
636 |
diskio_stats_ptr = diskio_stats + num_diskio; |
637 |
|
638 |
diskio_stats_ptr->read_bytes = rbytes; |
639 |
diskio_stats_ptr->write_bytes = wbytes; |
640 |
#ifdef NETBSD |
641 |
name = stats[i].dk_name; |
642 |
#else |
643 |
name = dk_name[i]; |
644 |
#endif |
645 |
if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) { |
646 |
return NULL; |
647 |
} |
648 |
diskio_stats_ptr->systime = time(NULL); |
649 |
|
650 |
num_diskio++; |
651 |
} |
652 |
|
653 |
free(stats); |
654 |
#ifdef OPENBSD |
655 |
free(dk_name); |
656 |
free(disknames); |
657 |
#endif |
658 |
#endif |
659 |
|
660 |
#if defined(FREEBSD) || defined(DFBSD) |
661 |
if (!stats_init) { |
662 |
stats.dinfo=sg_malloc(sizeof(struct devinfo)); |
663 |
if(stats.dinfo==NULL) return NULL; |
664 |
bzero(stats.dinfo, sizeof(struct devinfo)); |
665 |
stats_init = 1; |
666 |
} |
667 |
#ifdef FREEBSD5 |
668 |
if ((devstat_getdevs(NULL, &stats)) < 0) { |
669 |
/* FIXME devstat functions return a string error in |
670 |
devstat_errbuf */ |
671 |
sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL); |
672 |
return NULL; |
673 |
} |
674 |
/* Not aware of a get all devices, so i said 999. If we ever |
675 |
* find a machine with more than 999 disks, then i'll change |
676 |
* this number :) |
677 |
*/ |
678 |
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) { |
679 |
sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL); |
680 |
return NULL; |
681 |
} |
682 |
#else |
683 |
if ((getdevs(&stats)) < 0) { |
684 |
sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL); |
685 |
return NULL; |
686 |
} |
687 |
/* Not aware of a get all devices, so i said 999. If we ever |
688 |
* find a machine with more than 999 disks, then i'll change |
689 |
* this number :) |
690 |
*/ |
691 |
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) { |
692 |
sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL); |
693 |
return NULL; |
694 |
} |
695 |
#endif |
696 |
|
697 |
for(counter=0;counter<stats.dinfo->numdevs;counter++){ |
698 |
dev_ptr=&stats.dinfo->devices[dev_sel[counter].position]; |
699 |
|
700 |
/* Throw away devices that have done nothing, ever.. Eg "odd" |
701 |
* devices.. like mem, proc.. and also doesn't report floppy |
702 |
* drives etc unless they are doing stuff :) |
703 |
*/ |
704 |
#ifdef FREEBSD5 |
705 |
if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue; |
706 |
#else |
707 |
if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue; |
708 |
#endif |
709 |
|
710 |
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
711 |
return NULL; |
712 |
} |
713 |
diskio_stats_ptr=diskio_stats+num_diskio; |
714 |
|
715 |
#ifdef FREEBSD5 |
716 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ]; |
717 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE]; |
718 |
#else |
719 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes_read; |
720 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes_written; |
721 |
#endif |
722 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
723 |
if (asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number) == -1) { |
724 |
sg_set_error_with_errno(SG_ERROR_ASPRINTF, NULL); |
725 |
return NULL; |
726 |
} |
727 |
diskio_stats_ptr->systime=time(NULL); |
728 |
|
729 |
num_diskio++; |
730 |
} |
731 |
free(dev_sel); |
732 |
|
733 |
#endif |
734 |
#ifdef SOLARIS |
735 |
if ((kc = kstat_open()) == NULL) { |
736 |
sg_set_error(SG_ERROR_KSTAT_OPEN, NULL); |
737 |
return NULL; |
738 |
} |
739 |
|
740 |
for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) { |
741 |
if (!strcmp(ksp->ks_class, "disk")) { |
742 |
|
743 |
if(ksp->ks_type != KSTAT_TYPE_IO) continue; |
744 |
/* We dont want metadevices appearins as num_diskio */ |
745 |
if(strcmp(ksp->ks_module, "md")==0) continue; |
746 |
if((kstat_read(kc, ksp, &kios))==-1){ |
747 |
} |
748 |
|
749 |
if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) { |
750 |
kstat_close(kc); |
751 |
return NULL; |
752 |
} |
753 |
diskio_stats_ptr=diskio_stats+num_diskio; |
754 |
|
755 |
diskio_stats_ptr->read_bytes=kios.nread; |
756 |
diskio_stats_ptr->write_bytes=kios.nwritten; |
757 |
if (sg_update_string(&diskio_stats_ptr->disk_name, |
758 |
sg_get_svr_from_bsd(ksp->ks_name)) < 0) { |
759 |
kstat_close(kc); |
760 |
return NULL; |
761 |
} |
762 |
diskio_stats_ptr->systime=time(NULL); |
763 |
|
764 |
num_diskio++; |
765 |
} |
766 |
} |
767 |
|
768 |
kstat_close(kc); |
769 |
#endif |
770 |
|
771 |
#ifdef LINUX |
772 |
num_diskio = 0; |
773 |
n = 0; |
774 |
|
775 |
/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels |
776 |
have statistics in here too, so we can use those directly. |
777 |
2.6 kernels have /proc/diskstats instead with almost (but not quite) |
778 |
the same format. */ |
779 |
|
780 |
f = fopen("/proc/diskstats", "r"); |
781 |
format = " %d %d %99s %*d %*d %lld %*d %*d %*d %lld"; |
782 |
if (f == NULL) { |
783 |
f = fopen("/proc/partitions", "r"); |
784 |
format = " %d %d %*d %99s %*d %*d %lld %*d %*d %*d %lld"; |
785 |
} |
786 |
if (f == NULL) goto out; |
787 |
now = time(NULL); |
788 |
|
789 |
if (!re_compiled) { |
790 |
if (regcomp(&part_re, "^(.*/)?[^/]*[0-9]$", REG_EXTENDED | REG_NOSUB) != 0) { |
791 |
sg_set_error(SG_ERROR_PARSE, NULL); |
792 |
goto out; |
793 |
} |
794 |
if (regcomp(¬_part_re, "^(.*/)?[^/0-9]+[0-9]+d[0-9]+$", REG_EXTENDED | REG_NOSUB) != 0) { |
795 |
sg_set_error(SG_ERROR_PARSE, NULL); |
796 |
goto out; |
797 |
} |
798 |
re_compiled = 1; |
799 |
} |
800 |
|
801 |
while ((line_ptr = sg_f_read_line(f, "")) != NULL) { |
802 |
char name[100]; |
803 |
long long rsect, wsect; |
804 |
|
805 |
int nr = sscanf(line_ptr, format, |
806 |
&major, &minor, name, &rsect, &wsect); |
807 |
if (nr < 3) continue; |
808 |
|
809 |
/* Skip device names ending in numbers, since they're |
810 |
partitions, unless they match the c0d0 pattern that some |
811 |
RAID devices use. */ |
812 |
/* FIXME: For 2.6+, we should probably be using sysfs to detect |
813 |
this... */ |
814 |
if ((regexec(&part_re, name, 0, NULL, 0) == 0) |
815 |
&& (regexec(¬_part_re, name, 0, NULL, 0) != 0)) { |
816 |
continue; |
817 |
} |
818 |
|
819 |
if (nr < 5) { |
820 |
has_pp_stats = 0; |
821 |
rsect = 0; |
822 |
wsect = 0; |
823 |
} |
824 |
|
825 |
if (VECTOR_RESIZE(diskio_stats, n + 1) < 0) { |
826 |
goto out; |
827 |
} |
828 |
if (VECTOR_RESIZE(parts, n + 1) < 0) { |
829 |
goto out; |
830 |
} |
831 |
|
832 |
if (sg_update_string(&diskio_stats[n].disk_name, name) < 0) { |
833 |
goto out; |
834 |
} |
835 |
diskio_stats[n].read_bytes = rsect * 512; |
836 |
diskio_stats[n].write_bytes = wsect * 512; |
837 |
diskio_stats[n].systime = now; |
838 |
parts[n].major = major; |
839 |
parts[n].minor = minor; |
840 |
|
841 |
n++; |
842 |
} |
843 |
|
844 |
fclose(f); |
845 |
f = NULL; |
846 |
|
847 |
if (!has_pp_stats) { |
848 |
/* This is an older kernel where /proc/partitions doesn't |
849 |
contain stats. Read what we can from /proc/stat instead, and |
850 |
fill in the appropriate bits of the list allocated above. */ |
851 |
|
852 |
f = fopen("/proc/stat", "r"); |
853 |
if (f == NULL) goto out; |
854 |
now = time(NULL); |
855 |
|
856 |
line_ptr = sg_f_read_line(f, "disk_io:"); |
857 |
if (line_ptr == NULL) goto out; |
858 |
|
859 |
while((line_ptr=strchr(line_ptr, ' '))!=NULL){ |
860 |
long long rsect, wsect; |
861 |
|
862 |
if (*++line_ptr == '\0') break; |
863 |
|
864 |
if((sscanf(line_ptr, |
865 |
"(%d,%d):(%*d, %*d, %lld, %*d, %lld)", |
866 |
&major, &minor, &rsect, &wsect)) != 4) { |
867 |
continue; |
868 |
} |
869 |
|
870 |
/* Find the corresponding device from earlier. |
871 |
Just to add to the fun, "minor" is actually the disk |
872 |
number, not the device minor, so we need to figure |
873 |
out the real minor number based on the major! |
874 |
This list is not exhaustive; if you're running |
875 |
an older kernel you probably don't have fancy |
876 |
I2O hardware anyway... */ |
877 |
switch (major) { |
878 |
case 3: |
879 |
case 21: |
880 |
case 22: |
881 |
case 33: |
882 |
case 34: |
883 |
case 36: |
884 |
case 56: |
885 |
case 57: |
886 |
case 88: |
887 |
case 89: |
888 |
case 90: |
889 |
case 91: |
890 |
minor *= 64; |
891 |
break; |
892 |
case 9: |
893 |
case 43: |
894 |
break; |
895 |
default: |
896 |
minor *= 16; |
897 |
break; |
898 |
} |
899 |
for (i = 0; i < n; i++) { |
900 |
if (major == parts[i].major |
901 |
&& minor == parts[i].minor) |
902 |
break; |
903 |
} |
904 |
if (i == n) continue; |
905 |
|
906 |
/* We read the number of blocks. Blocks are stored in |
907 |
512 bytes */ |
908 |
diskio_stats[i].read_bytes = rsect * 512; |
909 |
diskio_stats[i].write_bytes = wsect * 512; |
910 |
diskio_stats[i].systime = now; |
911 |
} |
912 |
} |
913 |
|
914 |
num_diskio = n; |
915 |
out: |
916 |
if (f != NULL) fclose(f); |
917 |
#endif |
918 |
|
919 |
#ifdef CYGWIN |
920 |
sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin"); |
921 |
return NULL; |
922 |
#endif |
923 |
|
924 |
#ifdef WIN32 |
925 |
sg_set_error(SG_ERROR_NONE, NULL); |
926 |
|
927 |
while((name = get_diskio(num_diskio, &rbytes, &wbytes)) != NULL) { |
928 |
if (VECTOR_RESIZE(diskio_stats, num_diskio+1)) { |
929 |
return NULL; |
930 |
} |
931 |
|
932 |
diskio_stats_ptr = diskio_stats + num_diskio; |
933 |
|
934 |
if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) { |
935 |
return NULL; |
936 |
} |
937 |
sg_update_string(&name, NULL); |
938 |
diskio_stats_ptr->read_bytes = rbytes; |
939 |
diskio_stats_ptr->write_bytes = wbytes; |
940 |
|
941 |
diskio_stats_ptr->systime = 0; |
942 |
|
943 |
num_diskio++; |
944 |
} |
945 |
#endif |
946 |
|
947 |
*entries=num_diskio; |
948 |
|
949 |
return diskio_stats; |
950 |
} |
951 |
|
952 |
sg_disk_io_stats *sg_get_disk_io_stats_diff(int *entries){ |
953 |
#ifndef WIN32 |
954 |
VECTOR_DECLARE_STATIC(diff, sg_disk_io_stats, 1, |
955 |
diskio_stat_init, diskio_stat_destroy); |
956 |
sg_disk_io_stats *src = NULL, *dest; |
957 |
int i, j, diff_count, new_count; |
958 |
|
959 |
if (diskio_stats == NULL) { |
960 |
/* No previous stats, so we can't calculate a difference. */ |
961 |
return sg_get_disk_io_stats(entries); |
962 |
} |
963 |
|
964 |
/* Resize the results array to match the previous stats. */ |
965 |
diff_count = VECTOR_SIZE(diskio_stats); |
966 |
if (VECTOR_RESIZE(diff, diff_count) < 0) { |
967 |
return NULL; |
968 |
} |
969 |
|
970 |
/* Copy the previous stats into the result. */ |
971 |
for (i = 0; i < diff_count; i++) { |
972 |
src = &diskio_stats[i]; |
973 |
dest = &diff[i]; |
974 |
|
975 |
if (sg_update_string(&dest->disk_name, src->disk_name) < 0) { |
976 |
return NULL; |
977 |
} |
978 |
dest->read_bytes = src->read_bytes; |
979 |
dest->write_bytes = src->write_bytes; |
980 |
dest->systime = src->systime; |
981 |
} |
982 |
|
983 |
/* Get a new set of stats. */ |
984 |
if (sg_get_disk_io_stats(&new_count) == NULL) { |
985 |
return NULL; |
986 |
} |
987 |
|
988 |
/* For each previous stat... */ |
989 |
for (i = 0; i < diff_count; i++) { |
990 |
dest = &diff[i]; |
991 |
|
992 |
/* ... find the corresponding new stat ... */ |
993 |
for (j = 0; j < new_count; j++) { |
994 |
/* Try the new stat in the same position first, |
995 |
since that's most likely to be it. */ |
996 |
src = &diskio_stats[(i + j) % new_count]; |
997 |
if (strcmp(src->disk_name, dest->disk_name) == 0) { |
998 |
break; |
999 |
} |
1000 |
} |
1001 |
if (j == new_count) { |
1002 |
/* No match found. */ |
1003 |
continue; |
1004 |
} |
1005 |
|
1006 |
/* ... and subtract the previous stat from it to get the |
1007 |
difference. */ |
1008 |
dest->read_bytes = src->read_bytes - dest->read_bytes; |
1009 |
dest->write_bytes = src->write_bytes - dest->write_bytes; |
1010 |
dest->systime = src->systime - dest->systime; |
1011 |
} |
1012 |
|
1013 |
*entries = diff_count; |
1014 |
return diff; |
1015 |
#else /* WIN32 */ |
1016 |
return sg_get_disk_io_stats(entries); |
1017 |
#endif |
1018 |
} |
1019 |
|
1020 |
int sg_disk_io_compare_name(const void *va, const void *vb) { |
1021 |
const sg_disk_io_stats *a = (const sg_disk_io_stats *)va; |
1022 |
const sg_disk_io_stats *b = (const sg_disk_io_stats *)vb; |
1023 |
|
1024 |
return strcmp(a->disk_name, b->disk_name); |
1025 |
} |
1026 |
|