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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 1.6 by pajs, Sun Feb 23 23:28:19 2003 UTC vs.
Revision 1.74 by ats, Mon Nov 1 20:36:46 2004 UTC

#	Line 1 | Line 1
1	<	/*
2	<	* i-scream central monitoring system
3	<	* http://www.i-scream.org.uk
4	<	* Copyright (C) 2000-2002 i-scream
1	>	/*
2	>	* i-scream libstatgrab
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	+	#include "tools.h"
35
36		#ifdef SOLARIS
37		#include <sys/mnttab.h>
33	–	#include <sys/types.h>
38		#include <sys/statvfs.h>
39		#include <kstat.h>
40	+	#define VALID_FS_TYPES {"ufs", "tmpfs", "vxfs"}
41	+	#endif
42
43	<	#define VALID_FS_TYPES {"ufs", "tmpfs"}
43	>	#if defined(LINUX) || defined(CYGWIN)
44	>	#include <mntent.h>
45	>	#include <sys/vfs.h>
46	>	#endif
47
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	<	#define START_VAL 1
56	>	#ifdef CYGWIN
57	>	#define VALID_FS_TYPES {"user"}
58	>	#endif
59
60	<	char *copy_string(char *orig_ptr, const char *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	<	/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
80	<	orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
81	<	if(orig_ptr==NULL){
82	<	return NULL;
83	<	}
84	<	strcpy(orig_ptr, 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	>	#endif
91
92	<	return orig_ptr;
92	>	static void disk_stat_init(sg_fs_stats *d) {
93	>	d->device_name = NULL;
94	>	d->fs_type = NULL;
95	>	d->mnt_point = NULL;
96		}
97
98	+	static void disk_stat_destroy(sg_fs_stats *d) {
99	+	free(d->device_name);
100	+	free(d->fs_type);
101	+	free(d->mnt_point);
102	+	}
103
104	<	void init_disk_stat(int start, int end, disk_stat_t *disk_stats){
104	>	static int is_valid_fs_type(const char *type) {
105	>	const char *types[] = VALID_FS_TYPES;
106	>	int i;
107
108	<	for(disk_stats+=start; start<=end; start++){
109	<	disk_stats->device_name=NULL;
110	<	disk_stats->fs_type=NULL;
111	<	disk_stats->mnt_point=NULL;
62	<
63	<	disk_stats++;
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){
116	>	sg_fs_stats *sg_get_fs_stats(int *entries){
117	>	VECTOR_DECLARE_STATIC(disk_stats, sg_fs_stats, 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) || defined(HPUX)
123	>	FILE *f;
124	>	#endif
125
126	<	char *fs_types[] = VALID_FS_TYPES;
73	<	int x, valid_type;
126	>	sg_fs_stats *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) || defined(HPUX)
133	>	struct mntent *mp;
134	>	struct statfs fs;
135	>	#endif
136	>	#ifdef ALLBSD
137	>	int nummnt;
138	>	#ifdef HAVE_STATVFS
139	>	struct statvfs *mp;
140	>	#else
141	>	struct statfs *mp;
142	>	#endif
143	>	#endif
144
145	<	disk_stat_t *disk_ptr;
145	>	#ifdef ALLBSD
146	>	nummnt=getmntinfo(&mp , MNT_LOCAL);
147	>	if (nummnt<=0){
148	>	sg_set_error_with_errno(SG_ERROR_GETMNTINFO, NULL);
149	>	return NULL;
150	>	}
151	>	for(;nummnt--; mp++){
152	>	valid_type = is_valid_fs_type(mp->f_fstypename);
153	>	#endif
154
155	<	if(watermark==-1){
156	<	disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
157	<	if(disk_stats==NULL){
158	<	return NULL;
159	<	}
160	<	watermark=START_VAL;
161	<	init_disk_stat(0, watermark-1, disk_stats);
155	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
156	>	#ifdef MNT_MNTTAB
157	>	if ((f=setmntent(MNT_MNTTAB, "r" ))==NULL){
158	>	#else
159	>	if ((f=setmntent("/etc/mtab", "r" ))==NULL){
160	>	#endif
161	>	sg_set_error(SG_ERROR_SETMNTENT, NULL);
162	>	return NULL;
163		}
164
165	+	while((mp=getmntent(f))){
166	+	if((statfs(mp->mnt_dir, &fs)) !=0){
167	+	continue;
168	+	}
169
170	+	valid_type = is_valid_fs_type(mp->mnt_type);
171	+	#endif
172	+
173	+	#ifdef SOLARIS
174		if ((f=fopen("/etc/mnttab", "r" ))==NULL){
175	+	sg_set_error_with_errno(SG_ERROR_OPEN, "/etc/mnttab");
176		return NULL;
177		}
178		while((getmntent(f, &mp)) == 0){
179		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
180		continue;
181		}
182	+	valid_type = is_valid_fs_type(mp.mnt_fstype);
183	+	#endif
184
185	<	valid_type=0;
186	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
187	<	if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
103	<	valid_type=1;
104	<	break;
185	>	if(valid_type){
186	>	if (VECTOR_RESIZE(disk_stats, num_disks + 1) < 0) {
187	>	return NULL;
188		}
189	<	}
189	>	disk_ptr=disk_stats+num_disks;
190
191	<	if(valid_type){
192	<	if(num_disks>watermark-1){
193	<	disk_ptr=disk_stats;
194	<	if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){
195	<	disk_stats=disk_ptr;
196	<	return NULL;
197	<	}
191	>	#ifdef ALLBSD
192	>	if (sg_update_string(&disk_ptr->device_name, mp->f_mntfromname) < 0) {
193	>	return NULL;
194	>	}
195	>	if (sg_update_string(&disk_ptr->fs_type, mp->f_fstypename) < 0) {
196	>	return NULL;
197	>	}
198	>	if (sg_update_string(&disk_ptr->mnt_point, mp->f_mntonname) < 0) {
199	>	return NULL;
200	>	}
201
202	<	watermark=watermark*2;
203	<	init_disk_stat(num_disks, watermark-1, disk_stats);
202	>	disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks;
203	>	disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail;
204	>	disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree);
205	>
206	>	disk_ptr->total_inodes=(long long)mp->f_files;
207	>	disk_ptr->free_inodes=(long long)mp->f_ffree;
208	>	/* Freebsd doesn't have a "available" inodes */
209	>	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
210	>	#endif
211	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
212	>	if (sg_update_string(&disk_ptr->device_name, mp->mnt_fsname) < 0) {
213	>	return NULL;
214		}
215	+
216	+	if (sg_update_string(&disk_ptr->fs_type, mp->mnt_type) < 0) {
217	+	return NULL;
218	+	}
219
220	<	disk_ptr=disk_stats+num_disks;
221	<
222	<	/* Memory leak in event of realloc failing */
220	>	if (sg_update_string(&disk_ptr->mnt_point, mp->mnt_dir) < 0) {
221	>	return NULL;
222	>	}
223	>	disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks;
224	>	disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail;
225	>	disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree);
226	>
227	>	disk_ptr->total_inodes=(long long)fs.f_files;
228	>	disk_ptr->free_inodes=(long long)fs.f_ffree;
229	>	/* Linux doesn't have a "available" inodes */
230	>	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
231	>	#endif
232	>
233	>	#ifdef SOLARIS
234		/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
235	<	Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE woul prob be upwards
236	<	of a k each */
237	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
235	>	* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
236	>	* be upwards of a k each
237	>	*/
238	>	if (sg_update_string(&disk_ptr->device_name, mp.mnt_special) < 0) {
239		return NULL;
240		}
241
242	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
243	<	return NULL;
244	<	}
242	>	if (sg_update_string(&disk_ptr->fs_type, mp.mnt_fstype) < 0) {
243	>	return NULL;
244	>	}
245
246	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
247	<	return NULL;
248	<	}
246	>	if (sg_update_string(&disk_ptr->mnt_point, mp.mnt_mountp) < 0) {
247	>	return NULL;
248	>	}
249
250		disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks;
251		disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail;
#	Line 142 | Line 254 | disk_stat_t *get_disk_stats(int *entries){
254		disk_ptr->total_inodes=(long long)fs.f_files;
255		disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
256		disk_ptr->free_inodes=(long long)fs.f_favail;
257	<
257	>	#endif
258		num_disks++;
259		}
260		}
261
262		*entries=num_disks;
263
264	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
264	>	/* If this fails, there is very little i can do about it, so
265	>	I'll ignore it :) */
266	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
267	>	endmntent(f);
268	>	#endif
269	>	#if defined(SOLARIS)
270		fclose(f);
271	+	#endif
272
273		return disk_stats;
274
275		}
276
277	<	void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
277	>	int sg_fs_compare_device_name(const void *va, const void *vb) {
278	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
279	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
280
281	<	for(diskio_stats+=start; start<end; start++){
162	<	diskio_stats->disk_name=NULL;
163	<
164	<	diskio_stats++;
165	<	}
281	>	return strcmp(a->device_name, b->device_name);
282		}
283
284	<	diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){
284	>	int sg_fs_compare_mnt_point(const void *va, const void *vb) {
285	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
286	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
287
288	<	if(diskio_stats==NULL){
288	>	return strcmp(a->mnt_point, b->mnt_point);
289	>	}
290
291	<	if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
292	<	return NULL;
293	<	}
175	<	diskio_stat_init(0, needed_entries, diskio_stats);
176	<	*cur_entries=needed_entries;
291	>	static void diskio_stat_init(sg_disk_io_stats *d) {
292	>	d->disk_name = NULL;
293	>	}
294
295	<	return diskio_stats;
296	<	}
295	>	static void diskio_stat_destroy(sg_disk_io_stats *d) {
296	>	free(d->disk_name);
297	>	}
298
299	+	VECTOR_DECLARE_STATIC(diskio_stats, sg_disk_io_stats, 10,
300	+	diskio_stat_init, diskio_stat_destroy);
301
302	<	if(*cur_entries<needed_entries){
303	<	diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
304	<	if(diskio_stats==NULL){
305	<	return NULL;
306	<	}
307	<	diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
188	<	*cur_entries=needed_entries;
189	<	}
302	>	#ifdef LINUX
303	>	typedef struct {
304	>	int major;
305	>	int minor;
306	>	} partition;
307	>	#endif
308
309	<	return diskio_stats;
310	<	}
309	>	sg_disk_io_stats *sg_get_disk_io_stats(int *entries){
310	>	int num_diskio;
311	>	#ifndef LINUX
312	>	sg_disk_io_stats *diskio_stats_ptr;
313	>	#endif
314
315	<	static diskio_stat_t *diskio_stats=NULL;
316	<	static int num_diskio=0;
315	>	#ifdef HPUX
316	>	long long rbytes = 0, wbytes = 0;
317	>	struct dirent *dinfo = NULL;
318	>	struct stat lstatinfo;
319	>	struct pst_diskinfo pstat_diskinfo;
320	>	char fullpathbuf[1024] = {0};
321	>	dev_t diskid;
322	>	DIR *dh = NULL;
323	>	int disknum = 0;
324	>	#endif
325	>	#ifdef SOLARIS
326	>	kstat_ctl_t *kc;
327	>	kstat_t *ksp;
328	>	kstat_io_t kios;
329	>	#endif
330	>	#ifdef LINUX
331	>	FILE *f;
332	>	char *line_ptr;
333	>	int major, minor;
334	>	int has_pp_stats = 1;
335	>	VECTOR_DECLARE_STATIC(parts, partition, 16, NULL, NULL);
336	>	int i, n;
337	>	time_t now;
338	>	const char *format;
339	>	#endif
340	>	#if defined(FREEBSD) || defined(DFBSD)
341	>	static struct statinfo stats;
342	>	static int stats_init = 0;
343	>	int counter;
344	>	struct device_selection *dev_sel = NULL;
345	>	int n_selected, n_selections;
346	>	long sel_gen;
347	>	struct devstat *dev_ptr;
348	>	#endif
349	>	#ifdef NETBSD
350	>	struct disk_sysctl *stats;
351	>	#endif
352	>	#ifdef OPENBSD
353	>	int diskcount;
354	>	char *disknames, *name, *bufpp;
355	>	char **dk_name;
356	>	struct diskstats *stats;
357	>	#endif
358	>	#ifdef NETBSD
359	>	#define MIBSIZE 3
360	>	#endif
361	>	#ifdef OPENBSD
362	>	#define MIBSIZE 2
363	>	#endif
364	>	#if defined(NETBSD) || defined(OPENBSD)
365	>	int num_disks, i;
366	>	int mib[MIBSIZE];
367	>	size_t size;
368	>	#endif
369
370	<	diskio_stat_t *get_diskio_stats(int *entries){
370	>	num_diskio=0;
371
372	<	static int sizeof_diskio_stats=0;
200	<	diskio_stat_t *diskio_stats_ptr;
372	>	#ifdef HPUX
373
374	<	kstat_ctl_t *kc;
375	<	kstat_t *ksp;
376	<	kstat_io_t kios;
374	>	/* The "128" here is arbitrary, it can be increased to any number
375	>	at the expense of only more system calls to pstat(). */
376	>	for (disknum = 0; disknum < 128; disknum++) {
377	>	if (pstat_getdisk(&pstat_diskinfo, sizeof(pstat_diskinfo), 1, disknum) == -1) {
378	>	break;
379	>	}
380
381	<	if ((kc = kstat_open()) == NULL) {
382	<	return NULL;
383	<	}
381	>	if (pstat_diskinfo.psd_idx != disknum) {
382	>	continue;
383	>	}
384
385	<	num_diskio=0;
385	>	/* Skip "disabled" disks.. */
386	>	if (pstat_diskinfo.psd_status == 0) {
387	>	continue;
388	>	}
389
390	+	/* We can't seperate the reads from the writes, we'll
391	+	just give the same to each. */
392	+	rbytes = wbytes = (pstat_diskinfo.psd_dkwds * 64);
393	+
394	+	/* Skip unused disks. */
395	+	if (rbytes == 0 && wbytes == 0) {
396	+	continue;
397	+	}
398	+
399	+	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
400	+	return NULL;
401	+	}
402	+
403	+	diskio_stats_ptr = diskio_stats + num_diskio;
404	+
405	+	diskio_stats_ptr->read_bytes = rbytes;
406	+	diskio_stats_ptr->write_bytes = wbytes;
407	+
408	+	diskio_stats_ptr->systime = time(NULL);
409	+
410	+	num_diskio++;
411	+
412	+	if (diskio_stats_ptr->disk_name == NULL) {
413	+	dh = opendir("/dev/dsk");
414	+	if (dh == NULL) {
415	+	continue;
416	+	}
417	+
418	+	diskid = (pstat_diskinfo.psd_dev.psd_major << 24) | pstat_diskinfo.psd_dev.psd_minor;
419	+	while (1) {
420	+	dinfo = readdir(dh);
421	+	if (dinfo == NULL) {
422	+	break;
423	+	}
424	+	snprintf(fullpathbuf, sizeof(fullpathbuf), "/dev/dsk/%s", dinfo->d_name);
425	+	if (lstat(fullpathbuf, &lstatinfo) < 0) {
426	+	continue;
427	+	}
428	+
429	+	if (lstatinfo.st_rdev == diskid) {
430	+	if (sg_update_string(&diskio_stats_ptr->disk_name, dinfo->d_name) < 0) {
431	+	return NULL;
432	+	}
433	+	break;
434	+	}
435	+	}
436	+	closedir(dh);
437	+
438	+	if (diskio_stats_ptr->disk_name == NULL) {
439	+	if (sg_update_string(&diskio_stats_ptr->disk_name, pstat_diskinfo.psd_hw_path.psh_name) < 0) {
440	+	return NULL;
441	+	}
442	+	}
443	+	}
444	+	}
445	+	#endif
446	+	#ifdef OPENBSD
447	+	mib[0] = CTL_HW;
448	+	mib[1] = HW_DISKCOUNT;
449	+
450	+	size = sizeof(diskcount);
451	+	if (sysctl(mib, MIBSIZE, &diskcount, &size, NULL, 0) < 0) {
452	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKCOUNT");
453	+	return NULL;
454	+	}
455	+
456	+	mib[0] = CTL_HW;
457	+	mib[1] = HW_DISKNAMES;
458	+
459	+	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
460	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
461	+	return NULL;
462	+	}
463	+
464	+	disknames = sg_malloc(size);
465	+	if (disknames == NULL) {
466	+	return NULL;
467	+	}
468	+
469	+	if (sysctl(mib, MIBSIZE, disknames, &size, NULL, 0) < 0) {
470	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
471	+	return NULL;
472	+	}
473	+
474	+	dk_name = sg_malloc(diskcount * sizeof(char *));
475	+	bufpp = disknames;
476	+	for (i = 0; i < diskcount && (name = strsep(&bufpp, ",")) != NULL; i++) {
477	+	dk_name[i] = name;
478	+	}
479	+	#endif
480	+
481	+	#if defined(NETBSD) || defined(OPENBSD)
482	+	mib[0] = CTL_HW;
483	+	mib[1] = HW_DISKSTATS;
484	+	#ifdef NETBSD
485	+	mib[2] = sizeof(struct disk_sysctl);
486	+	#endif
487	+
488	+	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
489	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
490	+	return NULL;
491	+	}
492	+
493	+	#ifdef NETBSD
494	+	num_disks = size / sizeof(struct disk_sysctl);
495	+	#else
496	+	num_disks = size / sizeof(struct diskstats);
497	+	#endif
498	+
499	+	stats = sg_malloc(size);
500	+	if (stats == NULL) {
501	+	return NULL;
502	+	}
503	+
504	+	if (sysctl(mib, MIBSIZE, stats, &size, NULL, 0) < 0) {
505	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
506	+	return NULL;
507	+	}
508	+
509	+	for (i = 0; i < num_disks; i++) {
510	+	const char *name;
511	+	u_int64_t rbytes, wbytes;
512	+
513	+	#ifdef NETBSD
514	+	#ifdef HAVE_DK_RBYTES
515	+	rbytes = stats[i].dk_rbytes;
516	+	wbytes = stats[i].dk_wbytes;
517	+	#else
518	+	/* Before 2.0, NetBSD merged reads and writes. */
519	+	rbytes = wbytes = stats[i].dk_bytes;
520	+	#endif
521	+	#else
522	+	#ifdef HAVE_DS_RBYTES
523	+	rbytes = stats[i].ds_rbytes;
524	+	wbytes = stats[i].ds_wbytes;
525	+	#else
526	+	/* Before 3.5, OpenBSD merged reads and writes */
527	+	rbytes = wbytes = stats[i].ds_bytes;
528	+	#endif
529	+	#endif
530	+
531	+	/* Don't keep stats for disks that have never been used. */
532	+	if (rbytes == 0 && wbytes == 0) {
533	+	continue;
534	+	}
535	+
536	+	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
537	+	return NULL;
538	+	}
539	+	diskio_stats_ptr = diskio_stats + num_diskio;
540	+
541	+	diskio_stats_ptr->read_bytes = rbytes;
542	+	diskio_stats_ptr->write_bytes = wbytes;
543	+	#ifdef NETBSD
544	+	name = stats[i].dk_name;
545	+	#else
546	+	name = dk_name[i];
547	+	#endif
548	+	if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) {
549	+	return NULL;
550	+	}
551	+	diskio_stats_ptr->systime = time(NULL);
552	+
553	+	num_diskio++;
554	+	}
555	+
556	+	free(stats);
557	+	#ifdef OPENBSD
558	+	free(dk_name);
559	+	free(disknames);
560	+	#endif
561	+	#endif
562	+
563	+	#if defined(FREEBSD) || defined(DFBSD)
564	+	if (!stats_init) {
565	+	stats.dinfo=sg_malloc(sizeof(struct devinfo));
566	+	if(stats.dinfo==NULL) return NULL;
567	+	bzero(stats.dinfo, sizeof(struct devinfo));
568	+	stats_init = 1;
569	+	}
570	+	#ifdef FREEBSD5
571	+	if ((devstat_getdevs(NULL, &stats)) < 0) {
572	+	/* FIXME devstat functions return a string error in
573	+	devstat_errbuf */
574	+	sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL);
575	+	return NULL;
576	+	}
577	+	/* Not aware of a get all devices, so i said 999. If we ever
578	+	* find a machine with more than 999 disks, then i'll change
579	+	* this number :)
580	+	*/
581	+	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) {
582	+	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
583	+	return NULL;
584	+	}
585	+	#else
586	+	if ((getdevs(&stats)) < 0) {
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) {
595	+	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
596	+	return NULL;
597	+	}
598	+	#endif
599	+
600	+	for(counter=0;counter<stats.dinfo->numdevs;counter++){
601	+	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
602	+
603	+	/* Throw away devices that have done nothing, ever.. Eg "odd"
604	+	* devices.. like mem, proc.. and also doesn't report floppy
605	+	* drives etc unless they are doing stuff :)
606	+	*/
607	+	#ifdef FREEBSD5
608	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
609	+	#else
610	+	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
611	+	#endif
612	+
613	+	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
614	+	return NULL;
615	+	}
616	+	diskio_stats_ptr=diskio_stats+num_diskio;
617	+
618	+	#ifdef FREEBSD5
619	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
620	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
621	+	#else
622	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
623	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
624	+	#endif
625	+	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
626	+	if (asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number) == -1) {
627	+	sg_set_error_with_errno(SG_ERROR_ASPRINTF, NULL);
628	+	return NULL;
629	+	}
630	+	diskio_stats_ptr->systime=time(NULL);
631	+
632	+	num_diskio++;
633	+	}
634	+	free(dev_sel);
635	+
636	+	#endif
637	+	#ifdef SOLARIS
638	+	if ((kc = kstat_open()) == NULL) {
639	+	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
640	+	return NULL;
641	+	}
642	+
643		for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
644	<	if (!strcmp(ksp->ks_class, "disk")) {
644	>	if (!strcmp(ksp->ks_class, "disk")) {
645
646		if(ksp->ks_type != KSTAT_TYPE_IO) continue;
647		/* We dont want metadevices appearins as num_diskio */
648		if(strcmp(ksp->ks_module, "md")==0) continue;
649	<	if((kstat_read(kc, ksp, &kios))==-1){
649	>	if((kstat_read(kc, ksp, &kios))==-1){
650		}
651
652	<	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
652	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
653		kstat_close(kc);
654		return NULL;
655		}
656		diskio_stats_ptr=diskio_stats+num_diskio;
657
658		diskio_stats_ptr->read_bytes=kios.nread;
228	–
659		diskio_stats_ptr->write_bytes=kios.nwritten;
660	+	if (sg_update_string(&diskio_stats_ptr->disk_name,
661	+	sg_get_svr_from_bsd(ksp->ks_name)) < 0) {
662	+	return NULL;
663	+	}
664	+	diskio_stats_ptr->systime=time(NULL);
665
231	–	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
232	–
233	–	diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
666		num_diskio++;
667		}
668		}
669
670		kstat_close(kc);
671	+	#endif
672
673	+	#ifdef LINUX
674	+	num_diskio = 0;
675	+	n = 0;
676	+
677	+	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
678	+	have statistics in here too, so we can use those directly.
679	+	2.6 kernels have /proc/diskstats instead with almost (but not quite)
680	+	the same format. */
681	+
682	+	f = fopen("/proc/diskstats", "r");
683	+	format = " %d %d %99s %*d %*d %lld %*d %*d %*d %lld";
684	+	if (f == NULL) {
685	+	f = fopen("/proc/partitions", "r");
686	+	format = " %d %d %*d %99s %*d %*d %lld %*d %*d %*d %lld";
687	+	}
688	+	if (f == NULL) goto out;
689	+	now = time(NULL);
690	+
691	+	while ((line_ptr = sg_f_read_line(f, "")) != NULL) {
692	+	char name[100];
693	+	char *s;
694	+	long long rsect, wsect;
695	+
696	+	int nr = sscanf(line_ptr, format,
697	+	&major, &minor, name, &rsect, &wsect);
698	+	if (nr < 3) continue;
699	+
700	+	/* Skip device names ending in numbers, since they're
701	+	partitions. */
702	+	s = name;
703	+	while (*s != '\0') s++;
704	+	--s;
705	+	if (*s >= '0' && *s <= '9') continue;
706	+
707	+	if (nr < 5) {
708	+	has_pp_stats = 0;
709	+	rsect = 0;
710	+	wsect = 0;
711	+	}
712	+
713	+	if (VECTOR_RESIZE(diskio_stats, n + 1) < 0) {
714	+	goto out;
715	+	}
716	+	if (VECTOR_RESIZE(parts, n + 1) < 0) {
717	+	goto out;
718	+	}
719	+
720	+	if (sg_update_string(&diskio_stats[n].disk_name, name) < 0) {
721	+	goto out;
722	+	}
723	+	diskio_stats[n].read_bytes = rsect * 512;
724	+	diskio_stats[n].write_bytes = wsect * 512;
725	+	diskio_stats[n].systime = now;
726	+	parts[n].major = major;
727	+	parts[n].minor = minor;
728	+
729	+	n++;
730	+	}
731	+
732	+	fclose(f);
733	+	f = NULL;
734	+
735	+	if (!has_pp_stats) {
736	+	/* This is an older kernel where /proc/partitions doesn't
737	+	contain stats. Read what we can from /proc/stat instead, and
738	+	fill in the appropriate bits of the list allocated above. */
739	+
740	+	f = fopen("/proc/stat", "r");
741	+	if (f == NULL) goto out;
742	+	now = time(NULL);
743	+
744	+	line_ptr = sg_f_read_line(f, "disk_io:");
745	+	if (line_ptr == NULL) goto out;
746	+
747	+	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
748	+	long long rsect, wsect;
749	+
750	+	if (*++line_ptr == '\0') break;
751	+
752	+	if((sscanf(line_ptr,
753	+	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
754	+	&major, &minor, &rsect, &wsect)) != 4) {
755	+	continue;
756	+	}
757	+
758	+	/* Find the corresponding device from earlier.
759	+	Just to add to the fun, "minor" is actually the disk
760	+	number, not the device minor, so we need to figure
761	+	out the real minor number based on the major!
762	+	This list is not exhaustive; if you're running
763	+	an older kernel you probably don't have fancy
764	+	I2O hardware anyway... */
765	+	switch (major) {
766	+	case 3:
767	+	case 21:
768	+	case 22:
769	+	case 33:
770	+	case 34:
771	+	case 36:
772	+	case 56:
773	+	case 57:
774	+	case 88:
775	+	case 89:
776	+	case 90:
777	+	case 91:
778	+	minor *= 64;
779	+	break;
780	+	case 9:
781	+	case 43:
782	+	break;
783	+	default:
784	+	minor *= 16;
785	+	break;
786	+	}
787	+	for (i = 0; i < n; i++) {
788	+	if (major == parts[i].major
789	+	&& minor == parts[i].minor)
790	+	break;
791	+	}
792	+	if (i == n) continue;
793	+
794	+	/* We read the number of blocks. Blocks are stored in
795	+	512 bytes */
796	+	diskio_stats[i].read_bytes = rsect * 512;
797	+	diskio_stats[i].write_bytes = wsect * 512;
798	+	diskio_stats[i].systime = now;
799	+	}
800	+	}
801	+
802	+	num_diskio = n;
803	+	out:
804	+	if (f != NULL) fclose(f);
805	+	#endif
806	+
807	+	#ifdef CYGWIN
808	+	sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin");
809	+	return NULL;
810	+	#endif
811	+
812		*entries=num_diskio;
813
814		return diskio_stats;
815		}
816
817	<	diskio_stat_t *get_diskio_stats_diff(int *entries){
818	<	static diskio_stat_t *diskio_stats_diff=NULL;
819	<	static int sizeof_diskio_stats_diff=0;
820	<	diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr;
821	<	int disks, x, y;
817	>	sg_disk_io_stats *sg_get_disk_io_stats_diff(int *entries){
818	>	VECTOR_DECLARE_STATIC(diff, sg_disk_io_stats, 1,
819	>	diskio_stat_init, diskio_stat_destroy);
820	>	sg_disk_io_stats *src = NULL, *dest;
821	>	int i, j, diff_count, new_count;
822
823	<	if(diskio_stats==NULL){
824	<	diskio_stats_ptr=get_diskio_stats(&disks);
825	<	*entries=disks;
254	<	return diskio_stats_ptr;
823	>	if (diskio_stats == NULL) {
824	>	/* No previous stats, so we can't calculate a difference. */
825	>	return sg_get_disk_io_stats(entries);
826		}
827
828	<	diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff);
829	<	if(diskio_stats_diff==NULL){
828	>	/* Resize the results array to match the previous stats. */
829	>	diff_count = VECTOR_SIZE(diskio_stats);
830	>	if (VECTOR_RESIZE(diff, diff_count) < 0) {
831		return NULL;
832		}
833
834	<	diskio_stats_diff_ptr=diskio_stats_diff;
835	<	diskio_stats_ptr=diskio_stats;
834	>	/* Copy the previous stats into the result. */
835	>	for (i = 0; i < diff_count; i++) {
836	>	src = &diskio_stats[i];
837	>	dest = &diff[i];
838
839	<	for(disks=0;disks<num_diskio;disks++){
840	<	if(diskio_stats_diff_ptr->disk_name!=NULL){
267	<	free(diskio_stats_diff_ptr->disk_name);
839	>	if (sg_update_string(&dest->disk_name, src->disk_name) < 0) {
840	>	return NULL;
841		}
842	<	diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name);
843	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes;
844	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes;
845	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime;
842	>	dest->read_bytes = src->read_bytes;
843	>	dest->write_bytes = src->write_bytes;
844	>	dest->systime = src->systime;
845	>	}
846
847	<	diskio_stats_diff_ptr++;
848	<	diskio_stats_ptr++;
847	>	/* Get a new set of stats. */
848	>	if (sg_get_disk_io_stats(&new_count) == NULL) {
849	>	return NULL;
850		}
851
852	<	diskio_stats_ptr=get_diskio_stats(&disks);
853	<	diskio_stats_diff_ptr=diskio_stats_diff;
852	>	/* For each previous stat... */
853	>	for (i = 0; i < diff_count; i++) {
854	>	dest = &diff[i];
855
856	<	for(x=0;x<sizeof_diskio_stats_diff;x++){
857	<
858	<	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
859	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
860	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
861	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
862	<	}else{
288	<	diskio_stats_ptr=diskio_stats;
289	<	for(y=0;y<disks;y++){
290	<	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
291	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
292	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
293	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
294	<
295	<	break;
296	<	}
297	<
298	<	diskio_stats_ptr++;
856	>	/* ... find the corresponding new stat ... */
857	>	for (j = 0; j < new_count; j++) {
858	>	/* Try the new stat in the same position first,
859	>	since that's most likely to be it. */
860	>	src = &diskio_stats[(i + j) % new_count];
861	>	if (strcmp(src->disk_name, dest->disk_name) == 0) {
862	>	break;
863		}
864		}
865	+	if (j == new_count) {
866	+	/* No match found. */
867	+	continue;
868	+	}
869
870	<	diskio_stats_ptr++;
871	<	diskio_stats_diff_ptr++;
872	<
870	>	/* ... and subtract the previous stat from it to get the
871	>	difference. */
872	>	dest->read_bytes = src->read_bytes - dest->read_bytes;
873	>	dest->write_bytes = src->write_bytes - dest->write_bytes;
874	>	dest->systime = src->systime - dest->systime;
875		}
876
877	<	return diskio_stats_diff;
877	>	*entries = diff_count;
878	>	return diff;
879		}
880	+
881	+	int sg_disk_io_compare_name(const void *va, const void *vb) {
882	+	const sg_disk_io_stats *a = (const sg_disk_io_stats *)va;
883	+	const sg_disk_io_stats *b = (const sg_disk_io_stats *)vb;
884	+
885	+	return strcmp(a->disk_name, b->disk_name);
886	+	}
887	+

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