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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 1.3 by tdb, Thu Feb 20 13:19:52 2003 UTC vs.
Revision 1.82 by tdb, Wed Jul 13 13:01:24 2005 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 <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>
32	–	#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	>	#include <sys/statvfs.h>
47	>	#endif
48
49	+	#ifdef LINUX
50	+	#define VALID_FS_TYPES {"adfs", "affs", "befs", "bfs", "efs", "ext2", \
51	+	"ext3", "vxfs", "hfs", "hfsplus", "hpfs", "jffs", \
52	+	"jffs2", "minix", "msdos", "ntfs", "qnx4", "ramfs", \
53	+	"rootfs", "reiserfs", "sysv", "v7", "udf", "ufs", \
54	+	"umsdos", "vfat", "xfs", "jfs", "nfs"}
55		#endif
56
57	<	#define START_VAL 1
57	>	#ifdef CYGWIN
58	>	#define VALID_FS_TYPES {"user"}
59	>	#endif
60
61	<	char *copy_string(char *orig_ptr, const char *newtext){
61	>	#ifdef ALLBSD
62	>	#include <sys/param.h>
63	>	#include <sys/ucred.h>
64	>	#include <sys/mount.h>
65	>	#endif
66	>	#if defined(FREEBSD) || defined(DFBSD)
67	>	#include <sys/dkstat.h>
68	>	#include <devstat.h>
69	>	#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \
70	>	"ufs", "mfs", "nfs"}
71	>	#endif
72	>	#if defined(NETBSD) || defined(OPENBSD)
73	>	#include <sys/param.h>
74	>	#include <sys/sysctl.h>
75	>	#include <sys/disk.h>
76	>	#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \
77	>	"ntfs", "nfs"}
78	>	#endif
79
80	<	/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
81	<	orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
82	<	if(orig_ptr==NULL){
83	<	return NULL;
84	<	}
85	<	strcpy(orig_ptr, newtext);
80	>	#ifdef HPUX
81	>	#include <sys/param.h>
82	>	#include <sys/pstat.h>
83	>	#include <sys/types.h>
84	>	#include <sys/stat.h>
85	>	#include <sys/vfs.h>
86	>	#include <mntent.h>
87	>	#include <dirent.h>
88	>	#include <stdio.h>
89	>	#include <time.h>
90	>	#define VALID_FS_TYPES {"vxfs", "hfs"}
91	>	#define DISK_BATCH 30
92	>	#endif
93
94	<	return orig_ptr;
94	>	#ifdef ALLBSD
95	>	#define SG_MP_FSTYPENAME(mp) (mp)->f_fstypename
96	>	#define SG_MP_DEVNAME(mp)    (mp)->f_mntfromname
97	>	#define SG_MP_MOUNTP(mp)     (mp)->f_mntonname
98	>	#define SG_FS_FRSIZE(fs)     (long long) (*(fs))->f_bsize
99	>	#define SG_FS_BSIZE(fs)      (long long) (*(fs))->f_iosize
100	>	#define SG_FS_BLOCKS(fs)     (long long) (*(fs))->f_blocks
101	>	#define SG_FS_BFREE(fs)      (long long) (*(fs))->f_bfree
102	>	#define SG_FS_BAVAIL(fs)     (long long) (*(fs))->f_bavail
103	>	#define SG_FS_FILES(fs)      (long long) (*(fs))->f_files
104	>	#define SG_FS_FFREE(fs)      (long long) (*(fs))->f_ffree
105	>	#define SG_FS_FAVAIL(fs)     -1LL
106	>	#endif
107	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
108	>	#define SG_MP_FSTYPENAME(mp) (mp)->mnt_type
109	>	#define SG_MP_DEVNAME(mp)    (mp)->mnt_fsname
110	>	#define SG_MP_MOUNTP(mp)     (mp)->mnt_dir
111	>	#define SG_FS_FRSIZE(fs)     (long long) (fs).f_frsize
112	>	#define SG_FS_BSIZE(fs)      (long long) (fs).f_bsize
113	>	#define SG_FS_BLOCKS(fs)     (long long) (fs).f_blocks
114	>	#define SG_FS_BFREE(fs)      (long long) (fs).f_bfree
115	>	#define SG_FS_BAVAIL(fs)     (long long) (fs).f_bavail
116	>	#define SG_FS_FILES(fs)      (long long) (fs).f_files
117	>	#define SG_FS_FFREE(fs)      (long long) (fs).f_ffree
118	>	#define SG_FS_FAVAIL(fs)     (long long) (fs).f_favail
119	>	#endif
120	>	#ifdef SOLARIS
121	>	#define SG_MP_FSTYPENAME(mp) (mp).mnt_fstype
122	>	#define SG_MP_DEVNAME(mp)    (mp).mnt_special
123	>	#define SG_MP_MOUNTP(mp)     (mp).mnt_mountp
124	>	#define SG_FS_FRSIZE(fs)     (long long) (fs).f_frsize
125	>	#define SG_FS_BSIZE(fs)      (long long) (fs).f_bsize
126	>	#define SG_FS_BLOCKS(fs)     (long long) (fs).f_blocks
127	>	#define SG_FS_BFREE(fs)      (long long) (fs).f_bfree
128	>	#define SG_FS_BAVAIL(fs)     (long long) (fs).f_bavail
129	>	#define SG_FS_FILES(fs)      (long long) (fs).f_files
130	>	#define SG_FS_FFREE(fs)      (long long) (fs).f_ffree
131	>	#define SG_FS_FAVAIL(fs)     (long long) (fs).f_favail
132	>	#endif
133	>
134	>	static void disk_stat_init(sg_fs_stats *d) {
135	>	d->device_name = NULL;
136	>	d->fs_type = NULL;
137	>	d->mnt_point = NULL;
138		}
139
140	+	static void disk_stat_destroy(sg_fs_stats *d) {
141	+	free(d->device_name);
142	+	free(d->fs_type);
143	+	free(d->mnt_point);
144	+	}
145
146	<	void init_disk_stat(int start, int end, disk_stat_t *disk_stats){
146	>	static int is_valid_fs_type(const char *type) {
147	>	const char *types[] = VALID_FS_TYPES;
148	>	int i;
149
150	<	for(disk_stats+=start; start<=end; start++){
151	<	disk_stats->device_name=NULL;
152	<	disk_stats->fs_type=NULL;
153	<	disk_stats->mnt_point=NULL;
60	<
61	<	disk_stats++;
150	>	for (i = 0; i < (int) (sizeof types / sizeof *types); i++) {
151	>	if (strcmp(types[i], type) == 0) {
152	>	return 1;
153	>	}
154		}
155	<
155	>	return 0;
156		}
157
158	<	disk_stat_t *get_disk_stats(int *entries){
158	>	sg_fs_stats *sg_get_fs_stats(int *entries){
159	>	VECTOR_DECLARE_STATIC(disk_stats, sg_fs_stats, 10,
160	>	disk_stat_init, disk_stat_destroy);
161
162	<	static disk_stat_t *disk_stats;
163	<	static int watermark=-1;
162	>	int num_disks=0;
163	>	#if defined(LINUX) || defined (SOLARIS) || defined(CYGWIN) || defined(HPUX)
164	>	FILE *f;
165	>	#endif
166
167	<	char *fs_types[] = VALID_FS_TYPES;
72	<	int x, valid_type;
167	>	sg_fs_stats *disk_ptr;
168
169	<	int num_disks=0;
169	>	#ifdef SOLARIS
170		struct mnttab mp;
171		struct statvfs fs;
172	<	FILE *f;
172	>	#endif
173	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
174	>	struct mntent *mp;
175	>	struct statvfs fs;
176	>	#endif
177	>	#ifdef ALLBSD
178	>	int nummnt;
179	>	#ifdef HAVE_STATVFS
180	>	struct statvfs *mp, **fs;
181	>	#else
182	>	struct statfs *mp, **fs;
183	>	#endif
184	>	#endif
185
186	<	disk_stat_t *disk_ptr;
186	>	#ifdef ALLBSD
187	>	nummnt=getmntinfo(&mp, MNT_WAIT);
188	>	if (nummnt<=0){
189	>	sg_set_error_with_errno(SG_ERROR_GETMNTINFO, NULL);
190	>	return NULL;
191	>	}
192	>	for(fs = &mp; nummnt--; (*fs)++){
193	>	#endif
194
195	<	if(watermark==-1){
196	<	disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
197	<	if(disk_stats==NULL){
198	<	return NULL;
199	<	}
200	<	watermark=START_VAL;
201	<	init_disk_stat(0, watermark-1, disk_stats);
195	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
196	>	#ifdef MNT_MNTTAB
197	>	if ((f=setmntent(MNT_MNTTAB, "r" ))==NULL){
198	>	#else
199	>	if ((f=setmntent("/etc/mtab", "r" ))==NULL){
200	>	#endif
201	>	sg_set_error(SG_ERROR_SETMNTENT, NULL);
202	>	return NULL;
203		}
204
205	+	while((mp=getmntent(f))){
206	+	if((statvfs(mp->mnt_dir, &fs)) !=0){
207	+	continue;
208	+	}
209
210	+	#endif
211	+
212	+	#ifdef SOLARIS
213		if ((f=fopen("/etc/mnttab", "r" ))==NULL){
214	+	sg_set_error_with_errno(SG_ERROR_OPEN, "/etc/mnttab");
215		return NULL;
216		}
217		while((getmntent(f, &mp)) == 0){
218		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
219		continue;
220		}
221	+	#endif
222
223	<	valid_type=0;
224	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
225	<	if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
102	<	valid_type=1;
103	<	break;
223	>	if(is_valid_fs_type(SG_MP_FSTYPENAME(mp))){
224	>	if (VECTOR_RESIZE(disk_stats, num_disks + 1) < 0) {
225	>	return NULL;
226		}
227	+	disk_ptr=disk_stats+num_disks;
228	+
229	+	/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
230	+	* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
231	+	* be upwards of a k each
232	+	*/
233	+	if (sg_update_string(&disk_ptr->device_name, SG_MP_DEVNAME(mp)) < 0) {
234	+	return NULL;
235	+	}
236	+	if (sg_update_string(&disk_ptr->fs_type, SG_MP_FSTYPENAME(mp)) < 0) {
237	+	return NULL;
238	+	}
239	+	if (sg_update_string(&disk_ptr->mnt_point, SG_MP_MOUNTP(mp)) < 0) {
240	+	return NULL;
241	+	}
242	+
243	+	disk_ptr->size  = SG_FS_FRSIZE(fs) * SG_FS_BLOCKS(fs);
244	+	disk_ptr->avail = SG_FS_FRSIZE(fs) * SG_FS_BAVAIL(fs);
245	+	disk_ptr->used  = (disk_ptr->size) - (SG_FS_FRSIZE(fs) * SG_FS_BFREE(fs));
246	+
247	+	disk_ptr->total_inodes = SG_FS_FILES(fs);
248	+	disk_ptr->free_inodes  = SG_FS_FFREE(fs);
249	+	/* Linux, FreeBSD don't have a "available" inodes */
250	+	disk_ptr->used_inodes  = disk_ptr->total_inodes - disk_ptr->free_inodes;
251	+	disk_ptr->avail_inodes = SG_FS_FAVAIL(fs);
252	+
253	+	disk_ptr->io_size      = SG_FS_BSIZE(fs);
254	+	disk_ptr->block_size   = SG_FS_FRSIZE(fs);
255	+	disk_ptr->total_blocks = SG_FS_BLOCKS(fs);
256	+	disk_ptr->free_blocks  = SG_FS_BFREE(fs);
257	+	disk_ptr->avail_blocks = SG_FS_BAVAIL(fs);
258	+	disk_ptr->used_blocks  = disk_ptr->total_blocks - disk_ptr->free_blocks;
259	+
260	+	num_disks++;
261		}
262	+	}
263
264	<	if(valid_type){
108	<	if(num_disks>watermark-1){
109	<	disk_ptr=disk_stats;
110	<	if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){
111	<	disk_stats=disk_ptr;
112	<	return NULL;
113	<	}
264	>	*entries=num_disks;
265
266	<	watermark=watermark*2;
267	<	init_disk_stat(num_disks, watermark-1, disk_stats);
268	<	}
266	>	/* If this fails, there is very little i can do about it, so
267	>	I'll ignore it :) */
268	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
269	>	endmntent(f);
270	>	#endif
271	>	#if defined(SOLARIS)
272	>	fclose(f);
273	>	#endif
274
275	<	disk_ptr=disk_stats+num_disks;
275	>	return disk_stats;
276	>
277	>	}
278	>
279	>	int sg_fs_compare_device_name(const void *va, const void *vb) {
280	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
281	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
282	>
283	>	return strcmp(a->device_name, b->device_name);
284	>	}
285	>
286	>	int sg_fs_compare_mnt_point(const void *va, const void *vb) {
287	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
288	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
289	>
290	>	return strcmp(a->mnt_point, b->mnt_point);
291	>	}
292	>
293	>	static void diskio_stat_init(sg_disk_io_stats *d) {
294	>	d->disk_name = NULL;
295	>	}
296	>
297	>	static void diskio_stat_destroy(sg_disk_io_stats *d) {
298	>	free(d->disk_name);
299	>	}
300	>
301	>	VECTOR_DECLARE_STATIC(diskio_stats, sg_disk_io_stats, 10,
302	>	diskio_stat_init, diskio_stat_destroy);
303	>
304	>	#ifdef LINUX
305	>	typedef struct {
306	>	int major;
307	>	int minor;
308	>	} partition;
309	>	#endif
310	>
311	>	sg_disk_io_stats *sg_get_disk_io_stats(int *entries){
312	>	int num_diskio;
313	>	#ifndef LINUX
314	>	sg_disk_io_stats *diskio_stats_ptr;
315	>	#endif
316	>
317	>	#ifdef HPUX
318	>	long long rbytes = 0, wbytes = 0;
319	>	struct dirent *dinfo = NULL;
320	>	struct stat lstatinfo;
321	>	struct pst_diskinfo pstat_diskinfo[DISK_BATCH];
322	>	char fullpathbuf[1024] = {0};
323	>	dev_t diskid;
324	>	DIR *dh = NULL;
325	>	int diskidx = 0;
326	>	int num, i;
327	>	#endif
328	>	#ifdef SOLARIS
329	>	kstat_ctl_t *kc;
330	>	kstat_t *ksp;
331	>	kstat_io_t kios;
332	>	#endif
333	>	#ifdef LINUX
334	>	FILE *f;
335	>	char *line_ptr;
336	>	int major, minor;
337	>	int has_pp_stats = 1;
338	>	VECTOR_DECLARE_STATIC(parts, partition, 16, NULL, NULL);
339	>	int i, n;
340	>	time_t now;
341	>	const char *format;
342	>	static regex_t not_part_re, part_re;
343	>	static int re_compiled = 0;
344	>	#endif
345	>	#if defined(FREEBSD) || defined(DFBSD)
346	>	static struct statinfo stats;
347	>	static int stats_init = 0;
348	>	int counter;
349	>	struct device_selection *dev_sel = NULL;
350	>	int n_selected, n_selections;
351	>	long sel_gen;
352	>	struct devstat *dev_ptr;
353	>	#endif
354	>	#ifdef NETBSD
355	>	struct disk_sysctl *stats;
356	>	#endif
357	>	#ifdef OPENBSD
358	>	int diskcount;
359	>	char *disknames, *name, *bufpp;
360	>	char **dk_name;
361	>	struct diskstats *stats;
362	>	#endif
363	>	#ifdef NETBSD
364	>	#define MIBSIZE 3
365	>	#endif
366	>	#ifdef OPENBSD
367	>	#define MIBSIZE 2
368	>	#endif
369	>	#if defined(NETBSD) || defined(OPENBSD)
370	>	int num_disks, i;
371	>	int mib[MIBSIZE];
372	>	size_t size;
373	>	#endif
374	>
375	>	num_diskio=0;
376	>
377	>	#ifdef HPUX
378	>	while (1) {
379	>	num = pstat_getdisk(pstat_diskinfo, sizeof pstat_diskinfo[0],
380	>	DISK_BATCH, diskidx);
381	>	if (num == -1) {
382	>	sg_set_error_with_errno(SG_ERROR_PSTAT,
383	>	"pstat_getdisk");
384	>	return NULL;
385	>	} else if (num == 0) {
386	>	break;
387	>	}
388	>
389	>	for (i = 0; i < num; i++) {
390	>	struct pst_diskinfo *di = &pstat_diskinfo[i];
391	>
392	>	/* Skip "disabled" disks. */
393	>	if (di->psd_status == 0) {
394	>	continue;
395	>	}
396
397	<	/* Memory leak in event of realloc failing */
398	<	/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
399	<	Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE woul prob be upwards
400	<	of a k each */
401	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
397	>	/* We can't seperate the reads from the writes, we'll
398	>	* just give the same to each. (This value is in
399	>	* 64-byte chunks according to the pstat header file,
400	>	* and can wrap to be negative.)
401	>	*/
402	>	rbytes = wbytes = ((unsigned long) di->psd_dkwds) * 64LL;
403	>
404	>	/* Skip unused disks. */
405	>	if (rbytes == 0 && wbytes == 0) {
406	>	continue;
407	>	}
408	>
409	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
410		return NULL;
411		}
412	+
413	+	diskio_stats_ptr = diskio_stats + num_diskio;
414	+
415	+	diskio_stats_ptr->read_bytes = rbytes;
416	+	diskio_stats_ptr->write_bytes = wbytes;
417	+
418	+	diskio_stats_ptr->systime = time(NULL);
419	+
420	+	num_diskio++;
421	+
422	+	/* FIXME This should use a static cache, like the Linux
423	+	* code below. */
424	+	if (diskio_stats_ptr->disk_name == NULL) {
425	+	dh = opendir("/dev/dsk");
426	+	if (dh == NULL) {
427	+	continue;
428	+	}
429	+
430	+	diskid = (di->psd_dev.psd_major << 24) | di->psd_dev.psd_minor;
431	+	while (1) {
432	+	dinfo = readdir(dh);
433	+	if (dinfo == NULL) {
434	+	break;
435	+	}
436	+	snprintf(fullpathbuf, sizeof(fullpathbuf), "/dev/dsk/%s", dinfo->d_name);
437	+	if (lstat(fullpathbuf, &lstatinfo) < 0) {
438	+	continue;
439	+	}
440	+
441	+	if (lstatinfo.st_rdev == diskid) {
442	+	if (sg_update_string(&diskio_stats_ptr->disk_name, dinfo->d_name) < 0) {
443	+	return NULL;
444	+	}
445	+	break;
446	+	}
447	+	}
448	+	closedir(dh);
449	+
450	+	if (diskio_stats_ptr->disk_name == NULL) {
451	+	if (sg_update_string(&diskio_stats_ptr->disk_name, di->psd_hw_path.psh_name) < 0) {
452	+	return NULL;
453	+	}
454	+	}
455	+	}
456	+	}
457	+	diskidx = pstat_diskinfo[num - 1].psd_idx + 1;
458	+	}
459	+	#endif
460	+	#ifdef OPENBSD
461	+	mib[0] = CTL_HW;
462	+	mib[1] = HW_DISKCOUNT;
463
464	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
465	<	return NULL;
466	<	}
464	>	size = sizeof(diskcount);
465	>	if (sysctl(mib, MIBSIZE, &diskcount, &size, NULL, 0) < 0) {
466	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKCOUNT");
467	>	return NULL;
468	>	}
469	>
470	>	mib[0] = CTL_HW;
471	>	mib[1] = HW_DISKNAMES;
472	>
473	>	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
474	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
475	>	return NULL;
476	>	}
477	>
478	>	disknames = sg_malloc(size);
479	>	if (disknames == NULL) {
480	>	return NULL;
481	>	}
482	>
483	>	if (sysctl(mib, MIBSIZE, disknames, &size, NULL, 0) < 0) {
484	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
485	>	return NULL;
486	>	}
487	>
488	>	dk_name = sg_malloc(diskcount * sizeof(char *));
489	>	bufpp = disknames;
490	>	for (i = 0; i < diskcount && (name = strsep(&bufpp, ",")) != NULL; i++) {
491	>	dk_name[i] = name;
492	>	}
493	>	#endif
494	>
495	>	#if defined(NETBSD) || defined(OPENBSD)
496	>	mib[0] = CTL_HW;
497	>	mib[1] = HW_DISKSTATS;
498	>	#ifdef NETBSD
499	>	mib[2] = sizeof(struct disk_sysctl);
500	>	#endif
501	>
502	>	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
503	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
504	>	return NULL;
505	>	}
506	>
507	>	#ifdef NETBSD
508	>	num_disks = size / sizeof(struct disk_sysctl);
509	>	#else
510	>	num_disks = size / sizeof(struct diskstats);
511	>	#endif
512	>
513	>	stats = sg_malloc(size);
514	>	if (stats == NULL) {
515	>	return NULL;
516	>	}
517	>
518	>	if (sysctl(mib, MIBSIZE, stats, &size, NULL, 0) < 0) {
519	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
520	>	return NULL;
521	>	}
522	>
523	>	for (i = 0; i < num_disks; i++) {
524	>	const char *name;
525	>	u_int64_t rbytes, wbytes;
526	>
527	>	#ifdef NETBSD
528	>	#ifdef HAVE_DK_RBYTES
529	>	rbytes = stats[i].dk_rbytes;
530	>	wbytes = stats[i].dk_wbytes;
531	>	#else
532	>	/* Before 2.0, NetBSD merged reads and writes. */
533	>	rbytes = wbytes = stats[i].dk_bytes;
534	>	#endif
535	>	#else
536	>	#ifdef HAVE_DS_RBYTES
537	>	rbytes = stats[i].ds_rbytes;
538	>	wbytes = stats[i].ds_wbytes;
539	>	#else
540	>	/* Before 3.5, OpenBSD merged reads and writes */
541	>	rbytes = wbytes = stats[i].ds_bytes;
542	>	#endif
543	>	#endif
544	>
545	>	/* Don't keep stats for disks that have never been used. */
546	>	if (rbytes == 0 && wbytes == 0) {
547	>	continue;
548	>	}
549	>
550	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
551	>	return NULL;
552	>	}
553	>	diskio_stats_ptr = diskio_stats + num_diskio;
554	>
555	>	diskio_stats_ptr->read_bytes = rbytes;
556	>	diskio_stats_ptr->write_bytes = wbytes;
557	>	#ifdef NETBSD
558	>	name = stats[i].dk_name;
559	>	#else
560	>	name = dk_name[i];
561	>	#endif
562	>	if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) {
563	>	return NULL;
564	>	}
565	>	diskio_stats_ptr->systime = time(NULL);
566
567	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
568	<	return NULL;
569	<	}
567	>	num_diskio++;
568	>	}
569	>
570	>	free(stats);
571	>	#ifdef OPENBSD
572	>	free(dk_name);
573	>	free(disknames);
574	>	#endif
575	>	#endif
576	>
577	>	#if defined(FREEBSD) || defined(DFBSD)
578	>	if (!stats_init) {
579	>	stats.dinfo=sg_malloc(sizeof(struct devinfo));
580	>	if(stats.dinfo==NULL) return NULL;
581	>	bzero(stats.dinfo, sizeof(struct devinfo));
582	>	stats_init = 1;
583	>	}
584	>	#ifdef FREEBSD5
585	>	if ((devstat_getdevs(NULL, &stats)) < 0) {
586	>	/* FIXME devstat functions return a string error in
587	>	devstat_errbuf */
588	>	sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL);
589	>	return NULL;
590	>	}
591	>	/* Not aware of a get all devices, so i said 999. If we ever
592	>	* find a machine with more than 999 disks, then i'll change
593	>	* this number :)
594	>	*/
595	>	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) {
596	>	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
597	>	return NULL;
598	>	}
599	>	#else
600	>	if ((getdevs(&stats)) < 0) {
601	>	sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL);
602	>	return NULL;
603	>	}
604	>	/* Not aware of a get all devices, so i said 999. If we ever
605	>	* find a machine with more than 999 disks, then i'll change
606	>	* this number :)
607	>	*/
608	>	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) {
609	>	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
610	>	return NULL;
611	>	}
612	>	#endif
613	>
614	>	for(counter=0;counter<stats.dinfo->numdevs;counter++){
615	>	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
616	>
617	>	/* Throw away devices that have done nothing, ever.. Eg "odd"
618	>	* devices.. like mem, proc.. and also doesn't report floppy
619	>	* drives etc unless they are doing stuff :)
620	>	*/
621	>	#ifdef FREEBSD5
622	>	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
623	>	#else
624	>	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
625	>	#endif
626	>
627	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
628	>	return NULL;
629	>	}
630	>	diskio_stats_ptr=diskio_stats+num_diskio;
631	>
632	>	#ifdef FREEBSD5
633	>	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
634	>	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
635	>	#else
636	>	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
637	>	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
638	>	#endif
639	>	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
640	>	if (asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number) == -1) {
641	>	sg_set_error_with_errno(SG_ERROR_ASPRINTF, NULL);
642	>	return NULL;
643	>	}
644	>	diskio_stats_ptr->systime=time(NULL);
645	>
646	>	num_diskio++;
647	>	}
648	>	free(dev_sel);
649	>
650	>	#endif
651	>	#ifdef SOLARIS
652	>	if ((kc = kstat_open()) == NULL) {
653	>	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
654	>	return NULL;
655	>	}
656	>
657	>	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
658	>	if (!strcmp(ksp->ks_class, "disk")) {
659	>
660	>	if(ksp->ks_type != KSTAT_TYPE_IO) continue;
661	>	/* We dont want metadevices appearins as num_diskio */
662	>	if(strcmp(ksp->ks_module, "md")==0) continue;
663	>	if((kstat_read(kc, ksp, &kios))==-1){
664	>	}
665
666	<	disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks;
667	<	disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail;
668	<	disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree);
669	<
670	<	disk_ptr->total_inodes=(long long)fs.f_files;
671	<	disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
672	<	disk_ptr->free_inodes=(long long)fs.f_favail;
666	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
667	>	kstat_close(kc);
668	>	return NULL;
669	>	}
670	>	diskio_stats_ptr=diskio_stats+num_diskio;
671	>
672	>	diskio_stats_ptr->read_bytes=kios.nread;
673	>	diskio_stats_ptr->write_bytes=kios.nwritten;
674	>	if (sg_update_string(&diskio_stats_ptr->disk_name,
675	>	sg_get_svr_from_bsd(ksp->ks_name)) < 0) {
676	>	return NULL;
677	>	}
678	>	diskio_stats_ptr->systime=time(NULL);
679
680	<	num_disks++;
680	>	num_diskio++;
681		}
682		}
683
684	<	*entries=num_disks;
684	>	kstat_close(kc);
685	>	#endif
686
687	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
687	>	#ifdef LINUX
688	>	num_diskio = 0;
689	>	n = 0;
690	>
691	>	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
692	>	have statistics in here too, so we can use those directly.
693	>	2.6 kernels have /proc/diskstats instead with almost (but not quite)
694	>	the same format. */
695	>
696	>	f = fopen("/proc/diskstats", "r");
697	>	format = " %d %d %99s %*d %*d %lld %*d %*d %*d %lld";
698	>	if (f == NULL) {
699	>	f = fopen("/proc/partitions", "r");
700	>	format = " %d %d %*d %99s %*d %*d %lld %*d %*d %*d %lld";
701	>	}
702	>	if (f == NULL) goto out;
703	>	now = time(NULL);
704	>
705	>	if (!re_compiled) {
706	>	if (regcomp(&part_re, "^(.*/)?[^/]*[0-9]$", REG_EXTENDED | REG_NOSUB) != 0) {
707	>	sg_set_error(SG_ERROR_PARSE, NULL);
708	>	goto out;
709	>	}
710	>	if (regcomp(&not_part_re, "^(.*/)?[^/0-9]+[0-9]+d[0-9]+$", REG_EXTENDED | REG_NOSUB) != 0) {
711	>	sg_set_error(SG_ERROR_PARSE, NULL);
712	>	goto out;
713	>	}
714	>	re_compiled = 1;
715	>	}
716	>
717	>	while ((line_ptr = sg_f_read_line(f, "")) != NULL) {
718	>	char name[100];
719	>	long long rsect, wsect;
720	>
721	>	int nr = sscanf(line_ptr, format,
722	>	&major, &minor, name, &rsect, &wsect);
723	>	if (nr < 3) continue;
724	>
725	>	/* Skip device names ending in numbers, since they're
726	>	partitions, unless they match the c0d0 pattern that some
727	>	RAID devices use. */
728	>	/* FIXME: For 2.6+, we should probably be using sysfs to detect
729	>	this... */
730	>	if ((regexec(&part_re, name, 0, NULL, 0) == 0)
731	>	&& (regexec(&not_part_re, name, 0, NULL, 0) != 0)) {
732	>	continue;
733	>	}
734	>
735	>	if (nr < 5) {
736	>	has_pp_stats = 0;
737	>	rsect = 0;
738	>	wsect = 0;
739	>	}
740	>
741	>	if (VECTOR_RESIZE(diskio_stats, n + 1) < 0) {
742	>	goto out;
743	>	}
744	>	if (VECTOR_RESIZE(parts, n + 1) < 0) {
745	>	goto out;
746	>	}
747	>
748	>	if (sg_update_string(&diskio_stats[n].disk_name, name) < 0) {
749	>	goto out;
750	>	}
751	>	diskio_stats[n].read_bytes = rsect * 512;
752	>	diskio_stats[n].write_bytes = wsect * 512;
753	>	diskio_stats[n].systime = now;
754	>	parts[n].major = major;
755	>	parts[n].minor = minor;
756	>
757	>	n++;
758	>	}
759	>
760		fclose(f);
761	+	f = NULL;
762
763	<	return disk_stats;
763	>	if (!has_pp_stats) {
764	>	/* This is an older kernel where /proc/partitions doesn't
765	>	contain stats. Read what we can from /proc/stat instead, and
766	>	fill in the appropriate bits of the list allocated above. */
767
768	<	}
768	>	f = fopen("/proc/stat", "r");
769	>	if (f == NULL) goto out;
770	>	now = time(NULL);
771	>
772	>	line_ptr = sg_f_read_line(f, "disk_io:");
773	>	if (line_ptr == NULL) goto out;
774	>
775	>	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
776	>	long long rsect, wsect;
777
778	<	diskio_stat_t *get_diskio_stats(int *entries){
778	>	if (*++line_ptr == '\0') break;
779	>
780	>	if((sscanf(line_ptr,
781	>	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
782	>	&major, &minor, &rsect, &wsect)) != 4) {
783	>	continue;
784	>	}
785
786	<	/* Do jibble */
786	>	/* Find the corresponding device from earlier.
787	>	Just to add to the fun, "minor" is actually the disk
788	>	number, not the device minor, so we need to figure
789	>	out the real minor number based on the major!
790	>	This list is not exhaustive; if you're running
791	>	an older kernel you probably don't have fancy
792	>	I2O hardware anyway... */
793	>	switch (major) {
794	>	case 3:
795	>	case 21:
796	>	case 22:
797	>	case 33:
798	>	case 34:
799	>	case 36:
800	>	case 56:
801	>	case 57:
802	>	case 88:
803	>	case 89:
804	>	case 90:
805	>	case 91:
806	>	minor *= 64;
807	>	break;
808	>	case 9:
809	>	case 43:
810	>	break;
811	>	default:
812	>	minor *= 16;
813	>	break;
814	>	}
815	>	for (i = 0; i < n; i++) {
816	>	if (major == parts[i].major
817	>	&& minor == parts[i].minor)
818	>	break;
819	>	}
820	>	if (i == n) continue;
821	>
822	>	/* We read the number of blocks. Blocks are stored in
823	>	512 bytes */
824	>	diskio_stats[i].read_bytes = rsect * 512;
825	>	diskio_stats[i].write_bytes = wsect * 512;
826	>	diskio_stats[i].systime = now;
827	>	}
828	>	}
829	>
830	>	num_diskio = n;
831	>	out:
832	>	if (f != NULL) fclose(f);
833	>	#endif
834	>
835	>	#ifdef CYGWIN
836	>	sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin");
837		return NULL;
838	+	#endif
839	+
840	+	*entries=num_diskio;
841	+
842	+	return diskio_stats;
843		}
844	+
845	+	sg_disk_io_stats *sg_get_disk_io_stats_diff(int *entries){
846	+	VECTOR_DECLARE_STATIC(diff, sg_disk_io_stats, 1,
847	+	diskio_stat_init, diskio_stat_destroy);
848	+	sg_disk_io_stats *src = NULL, *dest;
849	+	int i, j, diff_count, new_count;
850	+
851	+	if (diskio_stats == NULL) {
852	+	/* No previous stats, so we can't calculate a difference. */
853	+	return sg_get_disk_io_stats(entries);
854	+	}
855	+
856	+	/* Resize the results array to match the previous stats. */
857	+	diff_count = VECTOR_SIZE(diskio_stats);
858	+	if (VECTOR_RESIZE(diff, diff_count) < 0) {
859	+	return NULL;
860	+	}
861	+
862	+	/* Copy the previous stats into the result. */
863	+	for (i = 0; i < diff_count; i++) {
864	+	src = &diskio_stats[i];
865	+	dest = &diff[i];
866	+
867	+	if (sg_update_string(&dest->disk_name, src->disk_name) < 0) {
868	+	return NULL;
869	+	}
870	+	dest->read_bytes = src->read_bytes;
871	+	dest->write_bytes = src->write_bytes;
872	+	dest->systime = src->systime;
873	+	}
874	+
875	+	/* Get a new set of stats. */
876	+	if (sg_get_disk_io_stats(&new_count) == NULL) {
877	+	return NULL;
878	+	}
879	+
880	+	/* For each previous stat... */
881	+	for (i = 0; i < diff_count; i++) {
882	+	dest = &diff[i];
883	+
884	+	/* ... find the corresponding new stat ... */
885	+	for (j = 0; j < new_count; j++) {
886	+	/* Try the new stat in the same position first,
887	+	since that's most likely to be it. */
888	+	src = &diskio_stats[(i + j) % new_count];
889	+	if (strcmp(src->disk_name, dest->disk_name) == 0) {
890	+	break;
891	+	}
892	+	}
893	+	if (j == new_count) {
894	+	/* No match found. */
895	+	continue;
896	+	}
897	+
898	+	/* ... and subtract the previous stat from it to get the
899	+	difference. */
900	+	dest->read_bytes = src->read_bytes - dest->read_bytes;
901	+	dest->write_bytes = src->write_bytes - dest->write_bytes;
902	+	dest->systime = src->systime - dest->systime;
903	+	}
904	+
905	+	*entries = diff_count;
906	+	return diff;
907	+	}
908	+
909	+	int sg_disk_io_compare_name(const void *va, const void *vb) {
910	+	const sg_disk_io_stats *a = (const sg_disk_io_stats *)va;
911	+	const sg_disk_io_stats *b = (const sg_disk_io_stats *)vb;
912	+
913	+	return strcmp(a->disk_name, b->disk_name);
914	+	}
915	+

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