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root/i-scream/projects/libstatgrab/src/libstatgrab/disk_stats.c

Comparing projects/libstatgrab/src/libstatgrab/disk_stats.c (file contents):
Revision 1.19 by ats, Thu Aug 28 21:33:42 2003 UTC vs.
Revision 1.81 by ats, Wed Apr 13 11:50:31 2005 UTC

#	Line 1 | Line 1
1	<	/*
2	<	* i-scream central monitoring system
1	>	/*
2	>	* i-scream libstatgrab
3		* http://www.i-scream.org
4	<	* Copyright (C) 2000-2003 i-scream
4	>	* Copyright (C) 2000-2004 i-scream
5		*
6	<	* This program is free software; you can redistribute it and/or
7	<	* modify it under the terms of the GNU General Public License
8	<	* as published by the Free Software Foundation; either version 2
9	<	* of the License, or (at your option) any later version.
6	>	* This library is free software; you can redistribute it and/or
7	>	* modify it under the terms of the GNU Lesser General Public
8	>	* License as published by the Free Software Foundation; either
9	>	* version 2.1 of the License, or (at your option) any later version.
10		*
11	<	* This program is distributed in the hope that it will be useful,
11	>	* This library is distributed in the hope that it will be useful,
12		* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	<	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14	<	* GNU General Public License for more details.
13	>	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14	>	* Lesser General Public License for more details.
15		*
16	<	* You should have received a copy of the GNU General Public License
17	<	* along with this program; if not, write to the Free Software
18	<	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
16	>	* You should have received a copy of the GNU Lesser General Public
17	>	* License along with this library; if not, write to the Free Software
18	>	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19	>	* 02111-1307 USA
20	>	*
21	>	* $Id$
22		*/
23
24		#ifdef HAVE_CONFIG_H
#	Line 25 | Line 28
28		#include <stdio.h>
29		#include <stdlib.h>
30		#include <string.h>
31	+	#include <time.h>
32		#include "statgrab.h"
33	+	#include "vector.h"
34	+	#include "tools.h"
35
36		#ifdef SOLARIS
37		#include <sys/mnttab.h>
38		#include <sys/statvfs.h>
39		#include <kstat.h>
40	<	#define VALID_FS_TYPES {"ufs", "tmpfs"}
40	>	#define VALID_FS_TYPES {"ufs", "tmpfs", "vxfs"}
41		#endif
42
43	<	#ifdef LINUX
38	<	#include <sys/vfs.h>
43	>	#if defined(LINUX) || defined(CYGWIN)
44		#include <mntent.h>
45	<	#include "tools.h"
41	<	#define VALID_FS_TYPES {"ext2", "ext3", "xfs", "reiserfs", "vfat", "tmpfs"}
45	>	#include <sys/vfs.h>
46		#endif
47
48	<	#ifdef FREEBSD
48	>	#ifdef LINUX
49	>	#define VALID_FS_TYPES {"adfs", "affs", "befs", "bfs", "efs", "ext2", \
50	>	"ext3", "vxfs", "hfs", "hfsplus", "hpfs", "jffs", \
51	>	"jffs2", "minix", "msdos", "ntfs", "qnx4", "ramfs", \
52	>	"rootfs", "reiserfs", "sysv", "v7", "udf", "ufs", \
53	>	"umsdos", "vfat", "xfs", "jfs", "nfs"}
54	>	#endif
55	>
56	>	#ifdef CYGWIN
57	>	#define VALID_FS_TYPES {"user"}
58	>	#endif
59	>
60	>	#ifdef ALLBSD
61		#include <sys/param.h>
62		#include <sys/ucred.h>
63		#include <sys/mount.h>
64	+	#endif
65	+	#if defined(FREEBSD) || defined(DFBSD)
66		#include <sys/dkstat.h>
67		#include <devstat.h>
68	<	#define VALID_FS_TYPES {"ufs", "mfs"}
68	>	#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \
69	>	"ufs", "mfs", "nfs"}
70		#endif
71	<	#define START_VAL 1
71	>	#if defined(NETBSD) || defined(OPENBSD)
72	>	#include <sys/param.h>
73	>	#include <sys/sysctl.h>
74	>	#include <sys/disk.h>
75	>	#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \
76	>	"ntfs", "nfs"}
77	>	#endif
78
79	<	char *copy_string(char *orig_ptr, const char *newtext){
79	>	#ifdef HPUX
80	>	#include <sys/param.h>
81	>	#include <sys/pstat.h>
82	>	#include <sys/types.h>
83	>	#include <sys/stat.h>
84	>	#include <sys/vfs.h>
85	>	#include <mntent.h>
86	>	#include <dirent.h>
87	>	#include <stdio.h>
88	>	#include <time.h>
89	>	#define VALID_FS_TYPES {"vxfs", "hfs"}
90	>	#define DISK_BATCH 30
91	>	#endif
92
93	<	/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
94	<	orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
95	<	if(orig_ptr==NULL){
96	<	return NULL;
97	<	}
61	<	strcpy(orig_ptr, newtext);
93	>	static void disk_stat_init(sg_fs_stats *d) {
94	>	d->device_name = NULL;
95	>	d->fs_type = NULL;
96	>	d->mnt_point = NULL;
97	>	}
98
99	<	return orig_ptr;
99	>	static void disk_stat_destroy(sg_fs_stats *d) {
100	>	free(d->device_name);
101	>	free(d->fs_type);
102	>	free(d->mnt_point);
103		}
104
105	+	static int is_valid_fs_type(const char *type) {
106	+	const char *types[] = VALID_FS_TYPES;
107	+	int i;
108
109	<	void init_disk_stat(int start, int end, disk_stat_t *disk_stats){
110	<
111	<	for(disk_stats+=start; start<=end; start++){
112	<	disk_stats->device_name=NULL;
71	<	disk_stats->fs_type=NULL;
72	<	disk_stats->mnt_point=NULL;
73	<
74	<	disk_stats++;
109	>	for (i = 0; i < (int) (sizeof types / sizeof *types); i++) {
110	>	if (strcmp(types[i], type) == 0) {
111	>	return 1;
112	>	}
113		}
114	+	return 0;
115		}
116
117	<	disk_stat_t *get_disk_stats(int *entries){
117	>	sg_fs_stats *sg_get_fs_stats(int *entries){
118	>	VECTOR_DECLARE_STATIC(disk_stats, sg_fs_stats, 10,
119	>	disk_stat_init, disk_stat_destroy);
120
121	<	static disk_stat_t *disk_stats;
81	<	static int watermark=-1;
82	<
83	<	char *fs_types[] = VALID_FS_TYPES;
84	<	int x, valid_type;
121	>	int valid_type;
122		int num_disks=0;
123	<	#if defined(LINUX) || defined (SOLARIS)
123	>	#if defined(LINUX) || defined (SOLARIS) || defined(CYGWIN) || defined(HPUX)
124		FILE *f;
125		#endif
126
127	<	disk_stat_t *disk_ptr;
127	>	sg_fs_stats *disk_ptr;
128
129		#ifdef SOLARIS
130		struct mnttab mp;
131		struct statvfs fs;
132		#endif
133	<	#ifdef LINUX
133	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
134		struct mntent *mp;
135		struct statfs fs;
136		#endif
137	<	#ifdef FREEBSD
137	>	#ifdef ALLBSD
138		int nummnt;
139	+	#ifdef HAVE_STATVFS
140	+	struct statvfs *mp;
141	+	#else
142		struct statfs *mp;
143		#endif
144	+	#endif
145
146	<	if(watermark==-1){
147	<	disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
107	<	if(disk_stats==NULL){
108	<	return NULL;
109	<	}
110	<	watermark=START_VAL;
111	<	init_disk_stat(0, watermark-1, disk_stats);
112	<	}
113	<	#ifdef FREEBSD
114	<	nummnt=getmntinfo(&mp , MNT_LOCAL);
146	>	#ifdef ALLBSD
147	>	nummnt=getmntinfo(&mp, MNT_WAIT);
148		if (nummnt<=0){
149	+	sg_set_error_with_errno(SG_ERROR_GETMNTINFO, NULL);
150		return NULL;
151		}
152		for(;nummnt--; mp++){
153	<	valid_type=0;
120	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
121	<	if(strcmp(mp->f_fstypename, fs_types[x]) ==0){
122	<	valid_type=1;
123	<	break;
124	<	}
125	<	}
153	>	valid_type = is_valid_fs_type(mp->f_fstypename);
154		#endif
155
156	<	#ifdef LINUX
156	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
157	>	#ifdef MNT_MNTTAB
158	>	if ((f=setmntent(MNT_MNTTAB, "r" ))==NULL){
159	>	#else
160		if ((f=setmntent("/etc/mtab", "r" ))==NULL){
161	+	#endif
162	+	sg_set_error(SG_ERROR_SETMNTENT, NULL);
163		return NULL;
164		}
165
#	Line 135 | Line 168 | disk_stat_t *get_disk_stats(int *entries){
168		continue;
169		}
170
171	<	valid_type=0;
139	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
140	<	if(strcmp(mp->mnt_type, fs_types[x]) ==0){
141	<	valid_type=1;
142	<	break;
143	<	}
144	<	}
171	>	valid_type = is_valid_fs_type(mp->mnt_type);
172		#endif
173
174		#ifdef SOLARIS
175		if ((f=fopen("/etc/mnttab", "r" ))==NULL){
176	+	sg_set_error_with_errno(SG_ERROR_OPEN, "/etc/mnttab");
177		return NULL;
178		}
179		while((getmntent(f, &mp)) == 0){
180		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
181		continue;
182		}
183	<	valid_type=0;
156	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
157	<	if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
158	<	valid_type=1;
159	<	break;
160	<	}
161	<	}
183	>	valid_type = is_valid_fs_type(mp.mnt_fstype);
184		#endif
185
186		if(valid_type){
187	<	if(num_disks>watermark-1){
188	<	disk_ptr=disk_stats;
167	<	if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){
168	<	disk_stats=disk_ptr;
169	<	return NULL;
170	<	}
171	<
172	<	watermark=watermark*2;
173	<	init_disk_stat(num_disks, watermark-1, disk_stats);
187	>	if (VECTOR_RESIZE(disk_stats, num_disks + 1) < 0) {
188	>	return NULL;
189		}
175	–
190		disk_ptr=disk_stats+num_disks;
191	<	#ifdef FREEBSD
192	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
191	>
192	>	#ifdef ALLBSD
193	>	if (sg_update_string(&disk_ptr->device_name, mp->f_mntfromname) < 0) {
194		return NULL;
195		}
196	<
182	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){
196	>	if (sg_update_string(&disk_ptr->fs_type, mp->f_fstypename) < 0) {
197		return NULL;
198		}
199	<
186	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){
199	>	if (sg_update_string(&disk_ptr->mnt_point, mp->f_mntonname) < 0) {
200		return NULL;
201		}
202
#	Line 196 | Line 209 | disk_stat_t *get_disk_stats(int *entries){
209		/* Freebsd doesn't have a "available" inodes */
210		disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
211		#endif
212	<	#ifdef LINUX
213	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
212	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
213	>	if (sg_update_string(&disk_ptr->device_name, mp->mnt_fsname) < 0) {
214		return NULL;
215		}
216
217	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){
217	>	if (sg_update_string(&disk_ptr->fs_type, mp->mnt_type) < 0) {
218		return NULL;
219		}
220
221	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){
221	>	if (sg_update_string(&disk_ptr->mnt_point, mp->mnt_dir) < 0) {
222		return NULL;
223		}
224		disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks;
#	Line 219 | Line 232 | disk_stat_t *get_disk_stats(int *entries){
232		#endif
233
234		#ifdef SOLARIS
222	–	/* Memory leak in event of realloc failing */
235		/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
236		* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
237		* be upwards of a k each
238		*/
239	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
239	>	if (sg_update_string(&disk_ptr->device_name, mp.mnt_special) < 0) {
240		return NULL;
241		}
242
243	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
244	<	return NULL;
245	<	}
243	>	if (sg_update_string(&disk_ptr->fs_type, mp.mnt_fstype) < 0) {
244	>	return NULL;
245	>	}
246
247	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
248	<	return NULL;
249	<	}
247	>	if (sg_update_string(&disk_ptr->mnt_point, mp.mnt_mountp) < 0) {
248	>	return NULL;
249	>	}
250
251		disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks;
252		disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail;
#	Line 250 | Line 262 | disk_stat_t *get_disk_stats(int *entries){
262
263		*entries=num_disks;
264
265	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
266	<	#if defined(LINUX) || defined(SOLARIS)
265	>	/* If this fails, there is very little i can do about it, so
266	>	I'll ignore it :) */
267	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
268	>	endmntent(f);
269	>	#endif
270	>	#if defined(SOLARIS)
271		fclose(f);
272		#endif
273
274		return disk_stats;
275
276		}
261	–	void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
277
278	<	for(diskio_stats+=start; start<end; start++){
279	<	diskio_stats->disk_name=NULL;
280	<
281	<	diskio_stats++;
282	<	}
278	>	int sg_fs_compare_device_name(const void *va, const void *vb) {
279	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
280	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
281	>
282	>	return strcmp(a->device_name, b->device_name);
283		}
284
285	<	diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){
285	>	int sg_fs_compare_mnt_point(const void *va, const void *vb) {
286	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
287	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
288
289	<	if(diskio_stats==NULL){
289	>	return strcmp(a->mnt_point, b->mnt_point);
290	>	}
291
292	<	if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
293	<	return NULL;
294	<	}
277	<	diskio_stat_init(0, needed_entries, diskio_stats);
278	<	*cur_entries=needed_entries;
292	>	static void diskio_stat_init(sg_disk_io_stats *d) {
293	>	d->disk_name = NULL;
294	>	}
295
296	<	return diskio_stats;
297	<	}
282	<
283	<
284	<	if(*cur_entries<needed_entries){
285	<	diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
286	<	if(diskio_stats==NULL){
287	<	return NULL;
288	<	}
289	<	diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
290	<	*cur_entries=needed_entries;
291	<	}
292	<
293	<	return diskio_stats;
296	>	static void diskio_stat_destroy(sg_disk_io_stats *d) {
297	>	free(d->disk_name);
298		}
299
300	<	static diskio_stat_t *diskio_stats=NULL;
301	<	static int num_diskio=0;
300	>	VECTOR_DECLARE_STATIC(diskio_stats, sg_disk_io_stats, 10,
301	>	diskio_stat_init, diskio_stat_destroy);
302
303	<	diskio_stat_t *get_diskio_stats(int *entries){
303	>	#ifdef LINUX
304	>	typedef struct {
305	>	int major;
306	>	int minor;
307	>	} partition;
308	>	#endif
309
310	<	static int sizeof_diskio_stats=0;
311	<	diskio_stat_t *diskio_stats_ptr;
310	>	sg_disk_io_stats *sg_get_disk_io_stats(int *entries){
311	>	int num_diskio;
312	>	#ifndef LINUX
313	>	sg_disk_io_stats *diskio_stats_ptr;
314	>	#endif
315
316	+	#ifdef HPUX
317	+	long long rbytes = 0, wbytes = 0;
318	+	struct dirent *dinfo = NULL;
319	+	struct stat lstatinfo;
320	+	struct pst_diskinfo pstat_diskinfo[DISK_BATCH];
321	+	char fullpathbuf[1024] = {0};
322	+	dev_t diskid;
323	+	DIR *dh = NULL;
324	+	int diskidx = 0;
325	+	int num, i;
326	+	#endif
327		#ifdef SOLARIS
328	<	kstat_ctl_t *kc;
329	<	kstat_t *ksp;
328	>	kstat_ctl_t *kc;
329	>	kstat_t *ksp;
330		kstat_io_t kios;
331		#endif
332		#ifdef LINUX
333		FILE *f;
334		char *line_ptr;
335		int major, minor;
336	<	char dev_letter;
336	>	int has_pp_stats = 1;
337	>	VECTOR_DECLARE_STATIC(parts, partition, 16, NULL, NULL);
338	>	int i, n;
339	>	time_t now;
340	>	const char *format;
341	>	static regex_t not_part_re, part_re;
342	>	static int re_compiled = 0;
343		#endif
344	<	#ifdef FREEBSD
345	<	struct statinfo stats;
344	>	#if defined(FREEBSD) || defined(DFBSD)
345	>	static struct statinfo stats;
346	>	static int stats_init = 0;
347		int counter;
348		struct device_selection *dev_sel = NULL;
349		int n_selected, n_selections;
350		long sel_gen;
351		struct devstat *dev_ptr;
352		#endif
353	+	#ifdef NETBSD
354	+	struct disk_sysctl *stats;
355	+	#endif
356	+	#ifdef OPENBSD
357	+	int diskcount;
358	+	char *disknames, *name, *bufpp;
359	+	char **dk_name;
360	+	struct diskstats *stats;
361	+	#endif
362	+	#ifdef NETBSD
363	+	#define MIBSIZE 3
364	+	#endif
365	+	#ifdef OPENBSD
366	+	#define MIBSIZE 2
367	+	#endif
368	+	#if defined(NETBSD) || defined(OPENBSD)
369	+	int num_disks, i;
370	+	int mib[MIBSIZE];
371	+	size_t size;
372	+	#endif
373	+
374		num_diskio=0;
375
376	<	#ifdef FREEBSD
377	<	stats.dinfo=malloc(sizeof(struct devinfo));
378	<	if(stats.dinfo==NULL) return NULL;
379	<	if ((getdevs(&stats)) < 0) return NULL;
376	>	#ifdef HPUX
377	>	while (1) {
378	>	num = pstat_getdisk(pstat_diskinfo, sizeof pstat_diskinfo[0],
379	>	DISK_BATCH, diskidx);
380	>	if (num == -1) {
381	>	sg_set_error_with_errno(SG_ERROR_PSTAT,
382	>	"pstat_getdisk");
383	>	return NULL;
384	>	} else if (num == 0) {
385	>	break;
386	>	}
387	>
388	>	for (i = 0; i < num; i++) {
389	>	struct pst_diskinfo *di = &pstat_diskinfo[i];
390	>
391	>	/* Skip "disabled" disks. */
392	>	if (di->psd_status == 0) {
393	>	continue;
394	>	}
395	>
396	>	/* We can't seperate the reads from the writes, we'll
397	>	* just give the same to each. (This value is in
398	>	* 64-byte chunks according to the pstat header file,
399	>	* and can wrap to be negative.)
400	>	*/
401	>	rbytes = wbytes = ((unsigned long) di->psd_dkwds) * 64LL;
402	>
403	>	/* Skip unused disks. */
404	>	if (rbytes == 0 && wbytes == 0) {
405	>	continue;
406	>	}
407	>
408	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
409	>	return NULL;
410	>	}
411	>
412	>	diskio_stats_ptr = diskio_stats + num_diskio;
413	>
414	>	diskio_stats_ptr->read_bytes = rbytes;
415	>	diskio_stats_ptr->write_bytes = wbytes;
416	>
417	>	diskio_stats_ptr->systime = time(NULL);
418	>
419	>	num_diskio++;
420	>
421	>	/* FIXME This should use a static cache, like the Linux
422	>	* code below. */
423	>	if (diskio_stats_ptr->disk_name == NULL) {
424	>	dh = opendir("/dev/dsk");
425	>	if (dh == NULL) {
426	>	continue;
427	>	}
428	>
429	>	diskid = (di->psd_dev.psd_major << 24) | di->psd_dev.psd_minor;
430	>	while (1) {
431	>	dinfo = readdir(dh);
432	>	if (dinfo == NULL) {
433	>	break;
434	>	}
435	>	snprintf(fullpathbuf, sizeof(fullpathbuf), "/dev/dsk/%s", dinfo->d_name);
436	>	if (lstat(fullpathbuf, &lstatinfo) < 0) {
437	>	continue;
438	>	}
439	>
440	>	if (lstatinfo.st_rdev == diskid) {
441	>	if (sg_update_string(&diskio_stats_ptr->disk_name, dinfo->d_name) < 0) {
442	>	return NULL;
443	>	}
444	>	break;
445	>	}
446	>	}
447	>	closedir(dh);
448	>
449	>	if (diskio_stats_ptr->disk_name == NULL) {
450	>	if (sg_update_string(&diskio_stats_ptr->disk_name, di->psd_hw_path.psh_name) < 0) {
451	>	return NULL;
452	>	}
453	>	}
454	>	}
455	>	}
456	>	diskidx = pstat_diskinfo[num - 1].psd_idx + 1;
457	>	}
458	>	#endif
459	>	#ifdef OPENBSD
460	>	mib[0] = CTL_HW;
461	>	mib[1] = HW_DISKCOUNT;
462	>
463	>	size = sizeof(diskcount);
464	>	if (sysctl(mib, MIBSIZE, &diskcount, &size, NULL, 0) < 0) {
465	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKCOUNT");
466	>	return NULL;
467	>	}
468	>
469	>	mib[0] = CTL_HW;
470	>	mib[1] = HW_DISKNAMES;
471	>
472	>	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
473	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
474	>	return NULL;
475	>	}
476	>
477	>	disknames = sg_malloc(size);
478	>	if (disknames == NULL) {
479	>	return NULL;
480	>	}
481	>
482	>	if (sysctl(mib, MIBSIZE, disknames, &size, NULL, 0) < 0) {
483	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
484	>	return NULL;
485	>	}
486	>
487	>	dk_name = sg_malloc(diskcount * sizeof(char *));
488	>	bufpp = disknames;
489	>	for (i = 0; i < diskcount && (name = strsep(&bufpp, ",")) != NULL; i++) {
490	>	dk_name[i] = name;
491	>	}
492	>	#endif
493	>
494	>	#if defined(NETBSD) || defined(OPENBSD)
495	>	mib[0] = CTL_HW;
496	>	mib[1] = HW_DISKSTATS;
497	>	#ifdef NETBSD
498	>	mib[2] = sizeof(struct disk_sysctl);
499	>	#endif
500	>
501	>	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
502	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
503	>	return NULL;
504	>	}
505	>
506	>	#ifdef NETBSD
507	>	num_disks = size / sizeof(struct disk_sysctl);
508	>	#else
509	>	num_disks = size / sizeof(struct diskstats);
510	>	#endif
511	>
512	>	stats = sg_malloc(size);
513	>	if (stats == NULL) {
514	>	return NULL;
515	>	}
516	>
517	>	if (sysctl(mib, MIBSIZE, stats, &size, NULL, 0) < 0) {
518	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
519	>	return NULL;
520	>	}
521	>
522	>	for (i = 0; i < num_disks; i++) {
523	>	const char *name;
524	>	u_int64_t rbytes, wbytes;
525	>
526	>	#ifdef NETBSD
527	>	#ifdef HAVE_DK_RBYTES
528	>	rbytes = stats[i].dk_rbytes;
529	>	wbytes = stats[i].dk_wbytes;
530	>	#else
531	>	/* Before 2.0, NetBSD merged reads and writes. */
532	>	rbytes = wbytes = stats[i].dk_bytes;
533	>	#endif
534	>	#else
535	>	#ifdef HAVE_DS_RBYTES
536	>	rbytes = stats[i].ds_rbytes;
537	>	wbytes = stats[i].ds_wbytes;
538	>	#else
539	>	/* Before 3.5, OpenBSD merged reads and writes */
540	>	rbytes = wbytes = stats[i].ds_bytes;
541	>	#endif
542	>	#endif
543	>
544	>	/* Don't keep stats for disks that have never been used. */
545	>	if (rbytes == 0 && wbytes == 0) {
546	>	continue;
547	>	}
548	>
549	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
550	>	return NULL;
551	>	}
552	>	diskio_stats_ptr = diskio_stats + num_diskio;
553	>
554	>	diskio_stats_ptr->read_bytes = rbytes;
555	>	diskio_stats_ptr->write_bytes = wbytes;
556	>	#ifdef NETBSD
557	>	name = stats[i].dk_name;
558	>	#else
559	>	name = dk_name[i];
560	>	#endif
561	>	if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) {
562	>	return NULL;
563	>	}
564	>	diskio_stats_ptr->systime = time(NULL);
565	>
566	>	num_diskio++;
567	>	}
568	>
569	>	free(stats);
570	>	#ifdef OPENBSD
571	>	free(dk_name);
572	>	free(disknames);
573	>	#endif
574	>	#endif
575	>
576	>	#if defined(FREEBSD) || defined(DFBSD)
577	>	if (!stats_init) {
578	>	stats.dinfo=sg_malloc(sizeof(struct devinfo));
579	>	if(stats.dinfo==NULL) return NULL;
580	>	bzero(stats.dinfo, sizeof(struct devinfo));
581	>	stats_init = 1;
582	>	}
583	>	#ifdef FREEBSD5
584	>	if ((devstat_getdevs(NULL, &stats)) < 0) {
585	>	/* FIXME devstat functions return a string error in
586	>	devstat_errbuf */
587	>	sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL);
588	>	return NULL;
589	>	}
590		/* Not aware of a get all devices, so i said 999. If we ever
591		* find a machine with more than 999 disks, then i'll change
592		* this number :)
593		*/
594	<	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) return NULL;
594	>	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) {
595	>	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
596	>	return NULL;
597	>	}
598	>	#else
599	>	if ((getdevs(&stats)) < 0) {
600	>	sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL);
601	>	return NULL;
602	>	}
603	>	/* Not aware of a get all devices, so i said 999. If we ever
604	>	* find a machine with more than 999 disks, then i'll change
605	>	* this number :)
606	>	*/
607	>	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) {
608	>	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
609	>	return NULL;
610	>	}
611	>	#endif
612
613		for(counter=0;counter<stats.dinfo->numdevs;counter++){
614		dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
#	Line 339 | Line 617 | diskio_stat_t *get_diskio_stats(int *entries){
617		* devices.. like mem, proc.. and also doesn't report floppy
618		* drives etc unless they are doing stuff :)
619		*/
620	+	#ifdef FREEBSD5
621	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
622	+	#else
623		if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
624	<	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
624	>	#endif
625	>
626	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
627		return NULL;
628		}
629		diskio_stats_ptr=diskio_stats+num_diskio;
630	<
630	>
631	>	#ifdef FREEBSD5
632	>	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
633	>	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
634	>	#else
635		diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
636		diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
637	+	#endif
638		if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
639	<	asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
639	>	if (asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number) == -1) {
640	>	sg_set_error_with_errno(SG_ERROR_ASPRINTF, NULL);
641	>	return NULL;
642	>	}
643		diskio_stats_ptr->systime=time(NULL);
644
645		num_diskio++;
646		}
647		free(dev_sel);
357	–	free(stats.dinfo);
648
649		#endif
650		#ifdef SOLARIS
651		if ((kc = kstat_open()) == NULL) {
652	<	return NULL;
653	<	}
652	>	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
653	>	return NULL;
654	>	}
655
656		for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
657	<	if (!strcmp(ksp->ks_class, "disk")) {
657	>	if (!strcmp(ksp->ks_class, "disk")) {
658
659		if(ksp->ks_type != KSTAT_TYPE_IO) continue;
660		/* We dont want metadevices appearins as num_diskio */
661		if(strcmp(ksp->ks_module, "md")==0) continue;
662	<	if((kstat_read(kc, ksp, &kios))==-1){
662	>	if((kstat_read(kc, ksp, &kios))==-1){
663		}
664
665	<	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
665	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
666		kstat_close(kc);
667		return NULL;
668		}
669		diskio_stats_ptr=diskio_stats+num_diskio;
670
671		diskio_stats_ptr->read_bytes=kios.nread;
381	–
672		diskio_stats_ptr->write_bytes=kios.nwritten;
673	<
674	<	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
675	<
676	<	diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
673	>	if (sg_update_string(&diskio_stats_ptr->disk_name,
674	>	sg_get_svr_from_bsd(ksp->ks_name)) < 0) {
675	>	return NULL;
676	>	}
677		diskio_stats_ptr->systime=time(NULL);
678	+
679		num_diskio++;
680		}
681		}
#	Line 393 | Line 684 | diskio_stat_t *get_diskio_stats(int *entries){
684		#endif
685
686		#ifdef LINUX
687	<	f=fopen("/proc/stat", "r");
688	<	if(f==NULL){
689	<	*entries=0;
690	<	return NULL;
687	>	num_diskio = 0;
688	>	n = 0;
689	>
690	>	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
691	>	have statistics in here too, so we can use those directly.
692	>	2.6 kernels have /proc/diskstats instead with almost (but not quite)
693	>	the same format. */
694	>
695	>	f = fopen("/proc/diskstats", "r");
696	>	format = " %d %d %99s %*d %*d %lld %*d %*d %*d %lld";
697	>	if (f == NULL) {
698	>	f = fopen("/proc/partitions", "r");
699	>	format = " %d %d %*d %99s %*d %*d %lld %*d %*d %*d %lld";
700		}
701	<	if((line_ptr=f_read_line(f, "disk_io:"))==NULL){
702	<	*entries=0;
703	<	fclose(f);
704	<	return NULL;
701	>	if (f == NULL) goto out;
702	>	now = time(NULL);
703	>
704	>	if (!re_compiled) {
705	>	if (regcomp(&part_re, "^(.*/)?[^/]*[0-9]$", REG_EXTENDED | REG_NOSUB) != 0) {
706	>	sg_set_error(SG_ERROR_PARSE, NULL);
707	>	goto out;
708	>	}
709	>	if (regcomp(&not_part_re, "^(.*/)?[^/0-9]+[0-9]+d[0-9]+$", REG_EXTENDED | REG_NOSUB) != 0) {
710	>	sg_set_error(SG_ERROR_PARSE, NULL);
711	>	goto out;
712	>	}
713	>	re_compiled = 1;
714		}
715	<	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
716	<	line_ptr++;
717	<	if(*line_ptr=='\0'){
718	<	break;
715	>
716	>	while ((line_ptr = sg_f_read_line(f, "")) != NULL) {
717	>	char name[100];
718	>	long long rsect, wsect;
719	>
720	>	int nr = sscanf(line_ptr, format,
721	>	&major, &minor, name, &rsect, &wsect);
722	>	if (nr < 3) continue;
723	>
724	>	/* Skip device names ending in numbers, since they're
725	>	partitions, unless they match the c0d0 pattern that some
726	>	RAID devices use. */
727	>	/* FIXME: For 2.6+, we should probably be using sysfs to detect
728	>	this... */
729	>	if ((regexec(&part_re, name, 0, NULL, 0) == 0)
730	>	&& (regexec(&not_part_re, name, 0, NULL, 0) != 0)) {
731	>	continue;
732		}
733	<	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
734	<	fclose(f);
735	<	*entries=0;
736	<	return NULL;
733	>
734	>	if (nr < 5) {
735	>	has_pp_stats = 0;
736	>	rsect = 0;
737	>	wsect = 0;
738		}
416	–	diskio_stats_ptr=diskio_stats+num_diskio;
739
740	+	if (VECTOR_RESIZE(diskio_stats, n + 1) < 0) {
741	+	goto out;
742	+	}
743	+	if (VECTOR_RESIZE(parts, n + 1) < 0) {
744	+	goto out;
745	+	}
746
747	<	if((sscanf(line_ptr, "(%d,%d):(%*d, %*d, %lld, %*d, %lld)", \
748	<	&major, \
421	<	&minor, \
422	<	&diskio_stats_ptr->read_bytes, \
423	<	&diskio_stats_ptr->write_bytes))!=4) {
424	<	continue;
747	>	if (sg_update_string(&diskio_stats[n].disk_name, name) < 0) {
748	>	goto out;
749		}
750	+	diskio_stats[n].read_bytes = rsect * 512;
751	+	diskio_stats[n].write_bytes = wsect * 512;
752	+	diskio_stats[n].systime = now;
753	+	parts[n].major = major;
754	+	parts[n].minor = minor;
755
756	<	/* We read the number of blocks. Blocks are stored in 512 bytes */
757	<	diskio_stats_ptr->read_bytes=diskio_stats_ptr->read_bytes*512;
429	<	diskio_stats_ptr->write_bytes=diskio_stats_ptr->write_bytes*512;
756	>	n++;
757	>	}
758
759	<	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
759	>	fclose(f);
760	>	f = NULL;
761
762	<	switch(major){
763	<	case 2:
764	<	if(minor==0){
765	<	diskio_stats_ptr->disk_name=strdup("fd0");
437	<	}
438	<	break;
762	>	if (!has_pp_stats) {
763	>	/* This is an older kernel where /proc/partitions doesn't
764	>	contain stats. Read what we can from /proc/stat instead, and
765	>	fill in the appropriate bits of the list allocated above. */
766
767	<	case 3:
768	<	if(minor==0){
769	<	diskio_stats_ptr->disk_name=strdup("hda");
770	<	}else{
771	<	diskio_stats_ptr->disk_name=strdup("hdb");
772	<	}
773	<	break;
767	>	f = fopen("/proc/stat", "r");
768	>	if (f == NULL) goto out;
769	>	now = time(NULL);
770	>
771	>	line_ptr = sg_f_read_line(f, "disk_io:");
772	>	if (line_ptr == NULL) goto out;
773	>
774	>	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
775	>	long long rsect, wsect;
776
777	+	if (*++line_ptr == '\0') break;
778	+
779	+	if((sscanf(line_ptr,
780	+	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
781	+	&major, &minor, &rsect, &wsect)) != 4) {
782	+	continue;
783	+	}
784	+
785	+	/* Find the corresponding device from earlier.
786	+	Just to add to the fun, "minor" is actually the disk
787	+	number, not the device minor, so we need to figure
788	+	out the real minor number based on the major!
789	+	This list is not exhaustive; if you're running
790	+	an older kernel you probably don't have fancy
791	+	I2O hardware anyway... */
792	+	switch (major) {
793	+	case 3:
794	+	case 21:
795		case 22:
796	<	if(minor==0){
797	<	diskio_stats_ptr->disk_name=strdup("hdc");
798	<	}else{
799	<	diskio_stats_ptr->disk_name=strdup("hdd");
800	<	}
796	>	case 33:
797	>	case 34:
798	>	case 36:
799	>	case 56:
800	>	case 57:
801	>	case 88:
802	>	case 89:
803	>	case 90:
804	>	case 91:
805	>	minor *= 64;
806		break;
807	<	case 8:
808	<	dev_letter='a'+(minor/16);
457	<	diskio_stats_ptr->disk_name=malloc(4);
458	<	snprintf(diskio_stats_ptr->disk_name, 4, "sd%c", dev_letter);
807	>	case 9:
808	>	case 43:
809		break;
810		default:
811	<	/* I have no idea what it is then :) */
462	<	diskio_stats_ptr->disk_name=malloc(16);
463	<	snprintf(diskio_stats_ptr->disk_name, 16, "%d %d", major, minor);
811	>	minor *= 16;
812		break;
813	<	}
813	>	}
814	>	for (i = 0; i < n; i++) {
815	>	if (major == parts[i].major
816	>	&& minor == parts[i].minor)
817	>	break;
818	>	}
819	>	if (i == n) continue;
820
821	<	diskio_stats_ptr->systime=time(NULL);
822	<	num_diskio++;
821	>	/* We read the number of blocks. Blocks are stored in
822	>	512 bytes */
823	>	diskio_stats[i].read_bytes = rsect * 512;
824	>	diskio_stats[i].write_bytes = wsect * 512;
825	>	diskio_stats[i].systime = now;
826	>	}
827		}
828
829	<	fclose(f);
829	>	num_diskio = n;
830	>	out:
831	>	if (f != NULL) fclose(f);
832	>	#endif
833
834	+	#ifdef CYGWIN
835	+	sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin");
836	+	return NULL;
837		#endif
838	+
839		*entries=num_diskio;
840
841		return diskio_stats;
842		}
843
844	<	diskio_stat_t *get_diskio_stats_diff(int *entries){
845	<	static diskio_stat_t *diskio_stats_diff=NULL;
846	<	static int sizeof_diskio_stats_diff=0;
847	<	diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr;
848	<	int disks, x, y;
844	>	sg_disk_io_stats *sg_get_disk_io_stats_diff(int *entries){
845	>	VECTOR_DECLARE_STATIC(diff, sg_disk_io_stats, 1,
846	>	diskio_stat_init, diskio_stat_destroy);
847	>	sg_disk_io_stats *src = NULL, *dest;
848	>	int i, j, diff_count, new_count;
849
850	<	if(diskio_stats==NULL){
851	<	diskio_stats_ptr=get_diskio_stats(&disks);
852	<	*entries=disks;
488	<	return diskio_stats_ptr;
850	>	if (diskio_stats == NULL) {
851	>	/* No previous stats, so we can't calculate a difference. */
852	>	return sg_get_disk_io_stats(entries);
853		}
854
855	<	diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff);
856	<	if(diskio_stats_diff==NULL){
855	>	/* Resize the results array to match the previous stats. */
856	>	diff_count = VECTOR_SIZE(diskio_stats);
857	>	if (VECTOR_RESIZE(diff, diff_count) < 0) {
858		return NULL;
859		}
860
861	<	diskio_stats_diff_ptr=diskio_stats_diff;
862	<	diskio_stats_ptr=diskio_stats;
861	>	/* Copy the previous stats into the result. */
862	>	for (i = 0; i < diff_count; i++) {
863	>	src = &diskio_stats[i];
864	>	dest = &diff[i];
865
866	<	for(disks=0;disks<num_diskio;disks++){
867	<	if(diskio_stats_diff_ptr->disk_name!=NULL){
501	<	free(diskio_stats_diff_ptr->disk_name);
866	>	if (sg_update_string(&dest->disk_name, src->disk_name) < 0) {
867	>	return NULL;
868		}
869	<	diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name);
870	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes;
871	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes;
872	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime;
869	>	dest->read_bytes = src->read_bytes;
870	>	dest->write_bytes = src->write_bytes;
871	>	dest->systime = src->systime;
872	>	}
873
874	<	diskio_stats_diff_ptr++;
875	<	diskio_stats_ptr++;
874	>	/* Get a new set of stats. */
875	>	if (sg_get_disk_io_stats(&new_count) == NULL) {
876	>	return NULL;
877		}
878
879	<	diskio_stats_ptr=get_diskio_stats(&disks);
880	<	diskio_stats_diff_ptr=diskio_stats_diff;
879	>	/* For each previous stat... */
880	>	for (i = 0; i < diff_count; i++) {
881	>	dest = &diff[i];
882
883	<	for(x=0;x<sizeof_diskio_stats_diff;x++){
884	<
885	<	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
886	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
887	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
888	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
889	<	}else{
522	<	diskio_stats_ptr=diskio_stats;
523	<	for(y=0;y<disks;y++){
524	<	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
525	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
526	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
527	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
528	<
529	<	break;
530	<	}
531	<
532	<	diskio_stats_ptr++;
883	>	/* ... find the corresponding new stat ... */
884	>	for (j = 0; j < new_count; j++) {
885	>	/* Try the new stat in the same position first,
886	>	since that's most likely to be it. */
887	>	src = &diskio_stats[(i + j) % new_count];
888	>	if (strcmp(src->disk_name, dest->disk_name) == 0) {
889	>	break;
890		}
891		}
892	+	if (j == new_count) {
893	+	/* No match found. */
894	+	continue;
895	+	}
896
897	<	diskio_stats_ptr++;
898	<	diskio_stats_diff_ptr++;
899	<
897	>	/* ... and subtract the previous stat from it to get the
898	>	difference. */
899	>	dest->read_bytes = src->read_bytes - dest->read_bytes;
900	>	dest->write_bytes = src->write_bytes - dest->write_bytes;
901	>	dest->systime = src->systime - dest->systime;
902		}
903	<
904	<	*entries=sizeof_diskio_stats_diff;
905	<	return diskio_stats_diff;
903	>
904	>	*entries = diff_count;
905	>	return diff;
906		}
907	+
908	+	int sg_disk_io_compare_name(const void *va, const void *vb) {
909	+	const sg_disk_io_stats *a = (const sg_disk_io_stats *)va;
910	+	const sg_disk_io_stats *b = (const sg_disk_io_stats *)vb;
911	+
912	+	return strcmp(a->disk_name, b->disk_name);
913	+	}
914	+

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