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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 1.4 by pajs, Sun Feb 23 19:24:07 2003 UTC vs.
Revision 1.58 by ats, Sun Apr 4 23:26:23 2004 UTC

#	Line 1 | Line 1
1	<	/*
1	>	/*
2		* i-scream central monitoring system
3	<	* http://www.i-scream.org.uk
4	<	* Copyright (C) 2000-2002 i-scream
3	>	* http://www.i-scream.org
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
25		#include "config.h"
26		#endif
27
25	–	#include "statgrab.h"
26	–	#include <stdlib.h>
28		#include <stdio.h>
29	<	#include "ukcprog.h"
29	>	#include <stdlib.h>
30		#include <string.h>
31	+	#include <time.h>
32	+	#include "statgrab.h"
33	+	#include "vector.h"
34
35		#ifdef SOLARIS
36		#include <sys/mnttab.h>
33	–	#include <sys/types.h>
37		#include <sys/statvfs.h>
38		#include <kstat.h>
36	–
39		#define VALID_FS_TYPES {"ufs", "tmpfs"}
40	+	#endif
41
42	+	#if defined(LINUX) || defined(CYGWIN)
43	+	#include <mntent.h>
44	+	#include <sys/vfs.h>
45	+	#include "tools.h"
46		#endif
47
48	<	#define START_VAL 1
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"}
54	>	#endif
55
56	<	char *copy_string(char *orig_ptr, const char *newtext){
56	>	#ifdef CYGWIN
57	>	#define VALID_FS_TYPES {"user"}
58	>	#endif
59
60	<	/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
61	<	orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
62	<	if(orig_ptr==NULL){
63	<	return NULL;
64	<	}
65	<	strcpy(orig_ptr, newtext);
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 {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \
69	>	"ufs", "mfs"}
70	>	#endif
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"}
77	>	#endif
78
79	<	return orig_ptr;
79	>	static char *copy_string(char **dest, const char *src) {
80	>	char *new;
81	>
82	>	new = realloc(*dest, strlen(src) + 1);
83	>	if (new == NULL) {
84	>	return NULL;
85	>	}
86	>
87	>	strcpy(new, src);
88	>	*dest = new;
89	>	return new;
90		}
91
92	+	static void disk_stat_init(disk_stat_t *d) {
93	+	d->device_name = NULL;
94	+	d->fs_type = NULL;
95	+	d->mnt_point = NULL;
96	+	}
97
98	<	void init_disk_stat(int start, int end, disk_stat_t *disk_stats){
98	>	static void disk_stat_destroy(disk_stat_t *d) {
99	>	free(d->device_name);
100	>	free(d->fs_type);
101	>	free(d->mnt_point);
102	>	}
103
104	<	for(disk_stats+=start; start<=end; start++){
105	<	disk_stats->device_name=NULL;
106	<	disk_stats->fs_type=NULL;
107	<	disk_stats->mnt_point=NULL;
108	<
109	<	disk_stats++;
104	>	int is_valid_fs_type(const char *type) {
105	>	const char *types[] = VALID_FS_TYPES;
106	>	int i;
107	>
108	>	for (i = 0; i < (sizeof types / sizeof *types); i++) {
109	>	if (strcmp(types[i], type) == 0) {
110	>	return 1;
111	>	}
112		}
113	+	return 0;
114		}
115
116		disk_stat_t *get_disk_stats(int *entries){
117	+	VECTOR_DECLARE_STATIC(disk_stats, disk_stat_t, 10,
118	+	disk_stat_init, disk_stat_destroy);
119
120	<	static disk_stat_t *disk_stats;
121	<	static int watermark=-1;
120	>	int valid_type;
121	>	int num_disks=0;
122	>	#if defined(LINUX) || defined (SOLARIS) || defined(CYGWIN)
123	>	FILE *f;
124	>	#endif
125
126	<	char *fs_types[] = VALID_FS_TYPES;
73	<	int x, valid_type;
126	>	disk_stat_t *disk_ptr;
127
128	<	int num_disks=0;
128	>	#ifdef SOLARIS
129		struct mnttab mp;
130		struct statvfs fs;
131	<	FILE *f;
131	>	#endif
132	>	#if defined(LINUX) || defined(CYGWIN)
133	>	struct mntent *mp;
134	>	struct statfs fs;
135	>	#endif
136	>	#ifdef ALLBSD
137	>	int nummnt;
138	>	struct statfs *mp;
139	>	#endif
140
141	<	disk_stat_t *disk_ptr;
141	>	#ifdef ALLBSD
142	>	nummnt=getmntinfo(&mp , MNT_LOCAL);
143	>	if (nummnt<=0){
144	>	return NULL;
145	>	}
146	>	for(;nummnt--; mp++){
147	>	valid_type = is_valid_fs_type(mp->f_fstypename);
148	>	#endif
149
150	<	if(watermark==-1){
151	<	disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
152	<	if(disk_stats==NULL){
85	<	return NULL;
86	<	}
87	<	watermark=START_VAL;
88	<	init_disk_stat(0, watermark-1, disk_stats);
150	>	#if defined(LINUX) || defined(CYGWIN)
151	>	if ((f=setmntent("/etc/mtab", "r" ))==NULL){
152	>	return NULL;
153		}
154
155	+	while((mp=getmntent(f))){
156	+	if((statfs(mp->mnt_dir, &fs)) !=0){
157	+	continue;
158	+	}
159
160	+	valid_type = is_valid_fs_type(mp->mnt_type);
161	+	#endif
162	+
163	+	#ifdef SOLARIS
164		if ((f=fopen("/etc/mnttab", "r" ))==NULL){
165		return NULL;
166		}
#	Line 96 | Line 168 | disk_stat_t *get_disk_stats(int *entries){
168		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
169		continue;
170		}
171	+	valid_type = is_valid_fs_type(mp.mnt_fstype);
172	+	#endif
173
174	<	valid_type=0;
175	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
176	<	if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
103	<	valid_type=1;
104	<	break;
174	>	if(valid_type){
175	>	if (VECTOR_RESIZE(disk_stats, num_disks + 1) < 0) {
176	>	return NULL;
177		}
178	<	}
178	>	disk_ptr=disk_stats+num_disks;
179
180	<	if(valid_type){
181	<	if(num_disks>watermark-1){
182	<	disk_ptr=disk_stats;
183	<	if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){
184	<	disk_stats=disk_ptr;
185	<	return NULL;
186	<	}
180	>	#ifdef ALLBSD
181	>	if (copy_string(&disk_ptr->device_name, mp->f_mntfromname) == NULL) {
182	>	return NULL;
183	>	}
184	>	if (copy_string(&disk_ptr->fs_type, mp->f_fstypename) == NULL) {
185	>	return NULL;
186	>	}
187	>	if (copy_string(&disk_ptr->mnt_point, mp->f_mntonname) == NULL) {
188	>	return NULL;
189	>	}
190
191	<	watermark=watermark*2;
192	<	init_disk_stat(num_disks, watermark-1, disk_stats);
191	>	disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks;
192	>	disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail;
193	>	disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree);
194	>
195	>	disk_ptr->total_inodes=(long long)mp->f_files;
196	>	disk_ptr->free_inodes=(long long)mp->f_ffree;
197	>	/* Freebsd doesn't have a "available" inodes */
198	>	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
199	>	#endif
200	>	#if defined(LINUX) || defined(CYGWIN)
201	>	if (copy_string(&disk_ptr->device_name, mp->mnt_fsname) == NULL) {
202	>	return NULL;
203		}
204	+
205	+	if (copy_string(&disk_ptr->fs_type, mp->mnt_type) == NULL) {
206	+	return NULL;
207	+	}
208
209	<	disk_ptr=disk_stats+num_disks;
210	<
211	<	/* Memory leak in event of realloc failing */
209	>	if (copy_string(&disk_ptr->mnt_point, mp->mnt_dir) == NULL) {
210	>	return NULL;
211	>	}
212	>	disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks;
213	>	disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail;
214	>	disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree);
215	>
216	>	disk_ptr->total_inodes=(long long)fs.f_files;
217	>	disk_ptr->free_inodes=(long long)fs.f_ffree;
218	>	/* Linux doesn't have a "available" inodes */
219	>	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
220	>	#endif
221	>
222	>	#ifdef SOLARIS
223		/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
224	<	Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE woul prob be upwards
225	<	of a k each */
226	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
224	>	* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
225	>	* be upwards of a k each
226	>	*/
227	>	if (copy_string(&disk_ptr->device_name, mp.mnt_special) == NULL) {
228		return NULL;
229		}
230
231	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
231	>	if (copy_string(&disk_ptr->fs_type, mp.mnt_fstype) == NULL) {
232		return NULL;
233		}
234
235	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
235	>	if (copy_string(&disk_ptr->mnt_point, mp.mnt_mountp) == NULL) {
236		return NULL;
237		}
238
#	Line 142 | Line 243 | disk_stat_t *get_disk_stats(int *entries){
243		disk_ptr->total_inodes=(long long)fs.f_files;
244		disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
245		disk_ptr->free_inodes=(long long)fs.f_favail;
246	<
246	>	#endif
247		num_disks++;
248		}
249		}
250
251		*entries=num_disks;
252
253	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
253	>	/* If this fails, there is very little i can do about it, so
254	>	I'll ignore it :) */
255	>	#if defined(LINUX) || defined(CYGWIN)
256	>	endmntent(f);
257	>	#endif
258	>	#if defined(SOLARIS)
259		fclose(f);
260	+	#endif
261
262		return disk_stats;
263
264		}
265
266	<	void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
266	>	static void diskio_stat_init(diskio_stat_t *d) {
267	>	d->disk_name = NULL;
268	>	}
269
270	<	for(diskio_stats+=start; start<end; start++){
271	<	diskio_stats->disk_name=NULL;
163	<
164	<	diskio_stats++;
165	<	}
270	>	static void diskio_stat_destroy(diskio_stat_t *d) {
271	>	free(d->disk_name);
272		}
273
274	<	diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){
274	>	VECTOR_DECLARE_STATIC(diskio_stats, diskio_stat_t, 10,
275	>	diskio_stat_init, diskio_stat_destroy);
276
277	<	if(diskio_stats==NULL){
277	>	#ifdef LINUX
278	>	typedef struct {
279	>	int major;
280	>	int minor;
281	>	} partition;
282	>	#endif
283
284	<	if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
285	<	return NULL;
286	<	}
287	<	diskio_stat_init(0, needed_entries, diskio_stats);
288	<	*cur_entries=needed_entries;
284	>	diskio_stat_t *get_diskio_stats(int *entries){
285	>	int num_diskio;
286	>	#ifndef LINUX
287	>	diskio_stat_t *diskio_stats_ptr;
288	>	#endif
289
290	<	return diskio_stats;
291	<	}
290	>	#ifdef SOLARIS
291	>	kstat_ctl_t *kc;
292	>	kstat_t *ksp;
293	>	kstat_io_t kios;
294	>	#endif
295	>	#ifdef LINUX
296	>	FILE *f;
297	>	char *line_ptr;
298	>	int major, minor;
299	>	int has_pp_stats = 1;
300	>	VECTOR_DECLARE_STATIC(parts, partition, 16, NULL, NULL);
301	>	int i, n;
302	>	time_t now;
303	>	const char *format;
304	>	#endif
305	>	#if defined(FREEBSD) || defined(DFBSD)
306	>	static struct statinfo stats;
307	>	static int stats_init = 0;
308	>	int counter;
309	>	struct device_selection *dev_sel = NULL;
310	>	int n_selected, n_selections;
311	>	long sel_gen;
312	>	struct devstat *dev_ptr;
313	>	#endif
314	>	#ifdef NETBSD
315	>	struct disk_sysctl *stats;
316	>	#endif
317	>	#ifdef OPENBSD
318	>	int diskcount;
319	>	char *disknames, *name, *bufpp;
320	>	char **dk_name;
321	>	struct diskstats *stats;
322	>	#endif
323	>	#ifdef NETBSD
324	>	#define MIBSIZE 3
325	>	#endif
326	>	#ifdef OPENBSD
327	>	#define MIBSIZE 2
328	>	#endif
329	>	#if defined(NETBSD) || defined(OPENBSD)
330	>	int num_disks, i;
331	>	int mib[MIBSIZE];
332	>	size_t size;
333	>	#endif
334
335	+	num_diskio=0;
336
337	<	if(*cur_entries<needed_entries){
338	<	diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
339	<	if(diskio_stats==NULL){
185	<	return NULL;
186	<	}
187	<	diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
188	<	*cur_entries=needed_entries;
189	<	}
337	>	#ifdef OPENBSD
338	>	mib[0] = CTL_HW;
339	>	mib[1] = HW_DISKCOUNT;
340
341	<	return diskio_stats;
342	<	}
341	>	size = sizeof(diskcount);
342	>	if (sysctl(mib, MIBSIZE, &diskcount, &size, NULL, 0) < 0) {
343	>	return NULL;
344	>	}
345
346	<	static diskio_stat_t *diskio_stats=NULL;
346	>	mib[0] = CTL_HW;
347	>	mib[1] = HW_DISKNAMES;
348
349	<	diskio_stat_t *get_diskio_stats(int *entries){
349	>	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
350	>	return NULL;
351	>	}
352
353	<	static int sizeof_diskio_stats=0;
354	<	int disks=0;
355	<	diskio_stat_t *diskio_stats_ptr;
353	>	disknames = malloc(size);
354	>	if (disknames == NULL) {
355	>	return NULL;
356	>	}
357
358	<	kstat_ctl_t *kc;
359	<	kstat_t *ksp;
360	<	kstat_io_t kios;
358	>	if (sysctl(mib, MIBSIZE, disknames, &size, NULL, 0) < 0) {
359	>	return NULL;
360	>	}
361
362	+	dk_name = calloc(diskcount, sizeof(char *));
363	+	bufpp = disknames;
364	+	for (i = 0; i < diskcount && (name = strsep(&bufpp, ",")) != NULL; i++) {
365	+	dk_name[i] = name;
366	+	}
367	+	#endif
368	+
369	+	#if defined(NETBSD) || defined(OPENBSD)
370	+	mib[0] = CTL_HW;
371	+	mib[1] = HW_DISKSTATS;
372	+	#ifdef NETBSD
373	+	mib[2] = sizeof(struct disk_sysctl);
374	+	#endif
375	+
376	+	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
377	+	return NULL;
378	+	}
379	+
380	+	#ifdef NETBSD
381	+	num_disks = size / sizeof(struct disk_sysctl);
382	+	#else
383	+	num_disks = size / sizeof(struct diskstats);
384	+	#endif
385	+
386	+	stats = malloc(size);
387	+	if (stats == NULL) {
388	+	return NULL;
389	+	}
390	+
391	+	if (sysctl(mib, MIBSIZE, stats, &size, NULL, 0) < 0) {
392	+	return NULL;
393	+	}
394	+
395	+	for (i = 0; i < num_disks; i++) {
396	+	u_int64_t rbytes, wbytes;
397	+
398	+	#ifdef NETBSD
399	+	#ifdef HAVE_DK_RBYTES
400	+	rbytes = stats[i].dk_rbytes;
401	+	wbytes = stats[i].dk_wbytes;
402	+	#else
403	+	/* Before 1.7, NetBSD merged reads and writes. */
404	+	rbytes = wbytes = stats[i].dk_bytes;
405	+	#endif
406	+	#else
407	+	rbytes = wbytes = stats[i].ds_bytes;
408	+	#endif
409	+
410	+	/* Don't keep stats for disks that have never been used. */
411	+	if (rbytes == 0 && wbytes == 0) {
412	+	continue;
413	+	}
414	+
415	+	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
416	+	return NULL;
417	+	}
418	+	diskio_stats_ptr = diskio_stats + num_diskio;
419	+
420	+	diskio_stats_ptr->read_bytes = rbytes;
421	+	diskio_stats_ptr->write_bytes = wbytes;
422	+	if (diskio_stats_ptr->disk_name != NULL) {
423	+	free(diskio_stats_ptr->disk_name);
424	+	}
425	+	#ifdef NETBSD
426	+	diskio_stats_ptr->disk_name = strdup(stats[i].dk_name);
427	+	#else
428	+	diskio_stats_ptr->disk_name = strdup(dk_name[i]);
429	+	#endif
430	+	diskio_stats_ptr->systime = time(NULL);
431	+
432	+	num_diskio++;
433	+	}
434	+
435	+	free(stats);
436	+	#ifdef OPENBSD
437	+	free(dk_name);
438	+	free(disknames);
439	+	#endif
440	+	#endif
441	+
442	+	#if defined(FREEBSD) || defined(DFBSD)
443	+	if (!stats_init) {
444	+	stats.dinfo=malloc(sizeof(struct devinfo));
445	+	if(stats.dinfo==NULL) return NULL;
446	+	bzero(stats.dinfo, sizeof(struct devinfo));
447	+	stats_init = 1;
448	+	}
449	+	#ifdef FREEBSD5
450	+	if ((devstat_getdevs(NULL, &stats)) < 0) return NULL;
451	+	/* Not aware of a get all devices, so i said 999. If we ever
452	+	* find a machine with more than 999 disks, then i'll change
453	+	* this number :)
454	+	*/
455	+	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) return NULL;
456	+	#else
457	+	if ((getdevs(&stats)) < 0) return NULL;
458	+	/* Not aware of a get all devices, so i said 999. If we ever
459	+	* find a machine with more than 999 disks, then i'll change
460	+	* this number :)
461	+	*/
462	+	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;
463	+	#endif
464	+
465	+	for(counter=0;counter<stats.dinfo->numdevs;counter++){
466	+	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
467	+
468	+	/* Throw away devices that have done nothing, ever.. Eg "odd"
469	+	* devices.. like mem, proc.. and also doesn't report floppy
470	+	* drives etc unless they are doing stuff :)
471	+	*/
472	+	#ifdef FREEBSD5
473	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
474	+	#else
475	+	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
476	+	#endif
477	+
478	+	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
479	+	return NULL;
480	+	}
481	+	diskio_stats_ptr=diskio_stats+num_diskio;
482	+
483	+	#ifdef FREEBSD5
484	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
485	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
486	+	#else
487	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
488	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
489	+	#endif
490	+	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
491	+	asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
492	+	diskio_stats_ptr->systime=time(NULL);
493	+
494	+	num_diskio++;
495	+	}
496	+	free(dev_sel);
497	+
498	+	#endif
499	+	#ifdef SOLARIS
500		if ((kc = kstat_open()) == NULL) {
501		return NULL;
502		}
503
504		for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
211	–	fflush(stdout);
505		if (!strcmp(ksp->ks_class, "disk")) {
213	–	fflush(stdout);
506
507		if(ksp->ks_type != KSTAT_TYPE_IO) continue;
508	<	/* We dont want metadevices appearins as disks */
508	>	/* We dont want metadevices appearins as num_diskio */
509		if(strcmp(ksp->ks_module, "md")==0) continue;
510		if((kstat_read(kc, ksp, &kios))==-1){
219	–	fflush(stdout);
511		}
512
513	<	if((diskio_stats=diskio_stat_malloc(disks+1, &sizeof_diskio_stats, diskio_stats))==NULL){
513	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
514		kstat_close(kc);
515		return NULL;
516		}
517	<	diskio_stats_ptr=diskio_stats+disks;
517	>	diskio_stats_ptr=diskio_stats+num_diskio;
518
519		diskio_stats_ptr->read_bytes=kios.nread;
520
#	Line 231 | Line 522 | diskio_stat_t *get_diskio_stats(int *entries){
522
523		if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
524
525	<	diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
526	<	disks++;
527	<	fflush(stdout);
525	>	diskio_stats_ptr->disk_name=strdup((char *) get_svr_from_bsd(ksp->ks_name));
526	>	diskio_stats_ptr->systime=time(NULL);
527	>	num_diskio++;
528		}
529		}
530
531		kstat_close(kc);
532	+	#endif
533
534	<	*entries=disks;
534	>	#ifdef LINUX
535	>	num_diskio = 0;
536	>	n = 0;
537
538	+	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
539	+	have statistics in here too, so we can use those directly.
540	+	2.6 kernels have /proc/diskstats instead with almost (but not quite)
541	+	the same format. */
542	+
543	+	f = fopen("/proc/diskstats", "r");
544	+	format = " %d %d %99s %*d %*d %lld %*d %*d %*d %lld";
545	+	if (f == NULL) {
546	+	f = fopen("/proc/partitions", "r");
547	+	format = " %d %d %*d %99s %*d %*d %lld %*d %*d %*d %lld";
548	+	}
549	+	if (f == NULL) goto out;
550	+	now = time(NULL);
551	+
552	+	while ((line_ptr = f_read_line(f, "")) != NULL) {
553	+	char name[100];
554	+	char *s;
555	+	long long rsect, wsect;
556	+
557	+	int nr = sscanf(line_ptr, format,
558	+	&major, &minor, name, &rsect, &wsect);
559	+	if (nr < 3) continue;
560	+
561	+	/* Skip device names ending in numbers, since they're
562	+	partitions. */
563	+	s = name;
564	+	while (*s != '\0') s++;
565	+	--s;
566	+	if (*s >= '0' && *s <= '9') continue;
567	+
568	+	if (nr < 5) {
569	+	has_pp_stats = 0;
570	+	rsect = 0;
571	+	wsect = 0;
572	+	}
573	+
574	+	if (VECTOR_RESIZE(diskio_stats, n + 1) < 0) {
575	+	goto out;
576	+	}
577	+	if (VECTOR_RESIZE(parts, n + 1) < 0) {
578	+	goto out;
579	+	}
580	+
581	+	if (diskio_stats[n].disk_name != NULL)
582	+	free(diskio_stats[n].disk_name);
583	+	diskio_stats[n].disk_name = strdup(name);
584	+	diskio_stats[n].read_bytes = rsect * 512;
585	+	diskio_stats[n].write_bytes = wsect * 512;
586	+	diskio_stats[n].systime = now;
587	+	parts[n].major = major;
588	+	parts[n].minor = minor;
589	+
590	+	n++;
591	+	}
592	+
593	+	fclose(f);
594	+	f = NULL;
595	+
596	+	if (!has_pp_stats) {
597	+	/* This is an older kernel where /proc/partitions doesn't
598	+	contain stats. Read what we can from /proc/stat instead, and
599	+	fill in the appropriate bits of the list allocated above. */
600	+
601	+	f = fopen("/proc/stat", "r");
602	+	if (f == NULL) goto out;
603	+	now = time(NULL);
604	+
605	+	line_ptr = f_read_line(f, "disk_io:");
606	+	if (line_ptr == NULL) goto out;
607	+
608	+	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
609	+	long long rsect, wsect;
610	+
611	+	if (*++line_ptr == '\0') break;
612	+
613	+	if((sscanf(line_ptr,
614	+	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
615	+	&major, &minor, &rsect, &wsect)) != 4) {
616	+	continue;
617	+	}
618	+
619	+	/* Find the corresponding device from earlier.
620	+	Just to add to the fun, "minor" is actually the disk
621	+	number, not the device minor, so we need to figure
622	+	out the real minor number based on the major!
623	+	This list is not exhaustive; if you're running
624	+	an older kernel you probably don't have fancy
625	+	I2O hardware anyway... */
626	+	switch (major) {
627	+	case 3:
628	+	case 21:
629	+	case 22:
630	+	case 33:
631	+	case 34:
632	+	case 36:
633	+	case 56:
634	+	case 57:
635	+	case 88:
636	+	case 89:
637	+	case 90:
638	+	case 91:
639	+	minor *= 64;
640	+	break;
641	+	case 9:
642	+	case 43:
643	+	break;
644	+	default:
645	+	minor *= 16;
646	+	break;
647	+	}
648	+	for (i = 0; i < n; i++) {
649	+	if (major == parts[i].major
650	+	&& minor == parts[i].minor)
651	+	break;
652	+	}
653	+	if (i == n) continue;
654	+
655	+	/* We read the number of blocks. Blocks are stored in
656	+	512 bytes */
657	+	diskio_stats[i].read_bytes = rsect * 512;
658	+	diskio_stats[i].write_bytes = wsect * 512;
659	+	diskio_stats[i].systime = now;
660	+	}
661	+	}
662	+
663	+	num_diskio = n;
664	+	out:
665	+	if (f != NULL) fclose(f);
666	+	#endif
667	+
668	+	#ifdef CYGWIN
669	+	return NULL;
670	+	#endif
671	+
672	+	*entries=num_diskio;
673	+
674		return diskio_stats;
675		}
676	+
677	+	diskio_stat_t *get_diskio_stats_diff(int *entries){
678	+	VECTOR_DECLARE_STATIC(diff, diskio_stat_t, 1,
679	+	diskio_stat_init, diskio_stat_destroy);
680	+	diskio_stat_t *src = NULL, *dest;
681	+	int i, j, diff_count, new_count;
682	+
683	+	if (diskio_stats == NULL) {
684	+	/* No previous stats, so we can't calculate a difference. */
685	+	return get_diskio_stats(entries);
686	+	}
687	+
688	+	/* Resize the results array to match the previous stats. */
689	+	diff_count = VECTOR_SIZE(diskio_stats);
690	+	if (VECTOR_RESIZE(diff, diff_count) < 0) {
691	+	return NULL;
692	+	}
693	+
694	+	/* Copy the previous stats into the result. */
695	+	for (i = 0; i < diff_count; i++) {
696	+	src = &diskio_stats[i];
697	+	dest = &diff[i];
698	+
699	+	if (dest->disk_name != NULL) {
700	+	free(dest->disk_name);
701	+	}
702	+	dest->disk_name = strdup(src->disk_name);
703	+	dest->read_bytes = src->read_bytes;
704	+	dest->write_bytes = src->write_bytes;
705	+	dest->systime = src->systime;
706	+	}
707	+
708	+	/* Get a new set of stats. */
709	+	if (get_diskio_stats(&new_count) == NULL) {
710	+	return NULL;
711	+	}
712	+
713	+	/* For each previous stat... */
714	+	for (i = 0; i < diff_count; i++) {
715	+	dest = &diff[i];
716	+
717	+	/* ... find the corresponding new stat ... */
718	+	for (j = 0; j < new_count; j++) {
719	+	/* Try the new stat in the same position first,
720	+	since that's most likely to be it. */
721	+	src = &diskio_stats[(i + j) % new_count];
722	+	if (strcmp(src->disk_name, dest->disk_name) == 0) {
723	+	break;
724	+	}
725	+	}
726	+	if (j == new_count) {
727	+	/* No match found. */
728	+	continue;
729	+	}
730	+
731	+	/* ... and subtract the previous stat from it to get the
732	+	difference. */
733	+	dest->read_bytes = src->read_bytes - dest->read_bytes;
734	+	dest->write_bytes = src->write_bytes - dest->write_bytes;
735	+	dest->systime = src->systime - dest->systime;
736	+	}
737	+
738	+	*entries = diff_count;
739	+	return diff;
740	+	}
741	+

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