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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 1.10 by pajs, Tue Mar 4 18:06:16 2003 UTC vs.
Revision 1.63 by tdb, Tue Apr 6 14:52:58 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
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
30	–	#include <stdio.h>
37		#include <sys/mnttab.h>
38		#include <sys/statvfs.h>
39		#include <kstat.h>
40		#define VALID_FS_TYPES {"ufs", "tmpfs"}
41		#endif
42
43	<	#ifdef LINUX
38	<	#include <stdio.h>
39	<	#include <sys/vfs.h>
43	>	#if defined(LINUX) || defined(CYGWIN)
44		#include <mntent.h>
45	<	#include "tools.h"
42	<	#define VALID_FS_TYPES {"ext2", "ext3", "xfs", "reiserfs", "vfat", "tmpfs"}
45	>	#include <sys/vfs.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 void disk_stat_init(sg_fs_stats *d) {
80	>	d->device_name = NULL;
81	>	d->fs_type = NULL;
82	>	d->mnt_point = NULL;
83		}
84
85	+	static void disk_stat_destroy(sg_fs_stats *d) {
86	+	free(d->device_name);
87	+	free(d->fs_type);
88	+	free(d->mnt_point);
89	+	}
90
91	<	void init_disk_stat(int start, int end, disk_stat_t *disk_stats){
91	>	static int is_valid_fs_type(const char *type) {
92	>	const char *types[] = VALID_FS_TYPES;
93	>	int i;
94
95	<	for(disk_stats+=start; start<=end; start++){
96	<	disk_stats->device_name=NULL;
97	<	disk_stats->fs_type=NULL;
98	<	disk_stats->mnt_point=NULL;
66	<
67	<	disk_stats++;
95	>	for (i = 0; i < (sizeof types / sizeof *types); i++) {
96	>	if (strcmp(types[i], type) == 0) {
97	>	return 1;
98	>	}
99		}
100	+	return 0;
101		}
102
103	<	disk_stat_t *get_disk_stats(int *entries){
103	>	sg_fs_stats *sg_get_fs_stats(int *entries){
104	>	VECTOR_DECLARE_STATIC(disk_stats, sg_fs_stats, 10,
105	>	disk_stat_init, disk_stat_destroy);
106
107	<	static disk_stat_t *disk_stats;
74	<	static int watermark=-1;
75	<
76	<	char *fs_types[] = VALID_FS_TYPES;
77	<	int x, valid_type;
107	>	int valid_type;
108		int num_disks=0;
109	+	#if defined(LINUX) || defined (SOLARIS) || defined(CYGWIN)
110		FILE *f;
111	+	#endif
112
113	<	disk_stat_t *disk_ptr;
113	>	sg_fs_stats *disk_ptr;
114
115		#ifdef SOLARIS
116	<	struct mnttab *mp;
116	>	struct mnttab mp;
117		struct statvfs fs;
118		#endif
119	<	#ifdef LINUX
119	>	#if defined(LINUX) || defined(CYGWIN)
120		struct mntent *mp;
121		struct statfs fs;
122		#endif
123	+	#ifdef ALLBSD
124	+	int nummnt;
125	+	struct statfs *mp;
126	+	#endif
127
128	<	if(watermark==-1){
129	<	disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
130	<	if(disk_stats==NULL){
131	<	return NULL;
96	<	}
97	<	watermark=START_VAL;
98	<	init_disk_stat(0, watermark-1, disk_stats);
128	>	#ifdef ALLBSD
129	>	nummnt=getmntinfo(&mp , MNT_LOCAL);
130	>	if (nummnt<=0){
131	>	return NULL;
132		}
133	<	#ifdef LINUX
133	>	for(;nummnt--; mp++){
134	>	valid_type = is_valid_fs_type(mp->f_fstypename);
135	>	#endif
136	>
137	>	#if defined(LINUX) || defined(CYGWIN)
138		if ((f=setmntent("/etc/mtab", "r" ))==NULL){
139		return NULL;
140		}
#	Line 107 | Line 144 | disk_stat_t *get_disk_stats(int *entries){
144		continue;
145		}
146
147	<	valid_type=0;
111	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
112	<	if(strcmp(mp->mnt_type, fs_types[x]) ==0){
113	<	valid_type=1;
114	<	break;
115	<	}
116	<	}
147	>	valid_type = is_valid_fs_type(mp->mnt_type);
148		#endif
149
150		#ifdef SOLARIS
#	Line 124 | Line 155 | disk_stat_t *get_disk_stats(int *entries){
155		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
156		continue;
157		}
158	<	valid_type=0;
128	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
129	<	if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
130	<	valid_type=1;
131	<	break;
132	<	}
133	<	}
158	>	valid_type = is_valid_fs_type(mp.mnt_fstype);
159		#endif
160
161		if(valid_type){
162	<	if(num_disks>watermark-1){
163	<	disk_ptr=disk_stats;
164	<	if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){
165	<	disk_stats=disk_ptr;
141	<	return NULL;
142	<	}
162	>	if (VECTOR_RESIZE(disk_stats, num_disks + 1) < 0) {
163	>	return NULL;
164	>	}
165	>	disk_ptr=disk_stats+num_disks;
166
167	<	watermark=watermark*2;
168	<	init_disk_stat(num_disks, watermark-1, disk_stats);
167	>	#ifdef ALLBSD
168	>	if (sg_update_string(&disk_ptr->device_name, mp->f_mntfromname) < 0) {
169	>	return NULL;
170		}
171	+	if (sg_update_string(&disk_ptr->fs_type, mp->f_fstypename) < 0) {
172	+	return NULL;
173	+	}
174	+	if (sg_update_string(&disk_ptr->mnt_point, mp->f_mntonname) < 0) {
175	+	return NULL;
176	+	}
177
178	<	disk_ptr=disk_stats+num_disks;
179	<	#ifdef LINUX
180	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
178	>	disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks;
179	>	disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail;
180	>	disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree);
181	>
182	>	disk_ptr->total_inodes=(long long)mp->f_files;
183	>	disk_ptr->free_inodes=(long long)mp->f_ffree;
184	>	/* Freebsd doesn't have a "available" inodes */
185	>	disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
186	>	#endif
187	>	#if defined(LINUX) || defined(CYGWIN)
188	>	if (sg_update_string(&disk_ptr->device_name, mp->mnt_fsname) < 0) {
189		return NULL;
190		}
191
192	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){
192	>	if (sg_update_string(&disk_ptr->fs_type, mp->mnt_type) < 0) {
193		return NULL;
194		}
195
196	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){
196	>	if (sg_update_string(&disk_ptr->mnt_point, mp->mnt_dir) < 0) {
197		return NULL;
198		}
199		disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks;
#	Line 169 | Line 207 | disk_stat_t *get_disk_stats(int *entries){
207		#endif
208
209		#ifdef SOLARIS
172	–	/* Memory leak in event of realloc failing */
210		/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
211		* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
212		* be upwards of a k each
213		*/
214	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
214	>	if (sg_update_string(&disk_ptr->device_name, mp.mnt_special) < 0) {
215		return NULL;
216		}
217
218	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
218	>	if (sg_update_string(&disk_ptr->fs_type, mp.mnt_fstype) < 0) {
219		return NULL;
220		}
221
222	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
222	>	if (sg_update_string(&disk_ptr->mnt_point, mp.mnt_mountp) < 0) {
223		return NULL;
224		}
225
#	Line 200 | Line 237 | disk_stat_t *get_disk_stats(int *entries){
237
238		*entries=num_disks;
239
240	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
240	>	/* If this fails, there is very little i can do about it, so
241	>	I'll ignore it :) */
242	>	#if defined(LINUX) || defined(CYGWIN)
243	>	endmntent(f);
244	>	#endif
245	>	#if defined(SOLARIS)
246		fclose(f);
247	+	#endif
248
249		return disk_stats;
250
251		}
209	–	void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
252
253	<	for(diskio_stats+=start; start<end; start++){
254	<	diskio_stats->disk_name=NULL;
213	<
214	<	diskio_stats++;
215	<	}
253	>	static void diskio_stat_init(sg_disk_io_stats *d) {
254	>	d->disk_name = NULL;
255		}
256
257	<	diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){
258	<
220	<	if(diskio_stats==NULL){
221	<
222	<	if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
223	<	return NULL;
224	<	}
225	<	diskio_stat_init(0, needed_entries, diskio_stats);
226	<	*cur_entries=needed_entries;
227	<
228	<	return diskio_stats;
229	<	}
230	<
231	<
232	<	if(*cur_entries<needed_entries){
233	<	diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
234	<	if(diskio_stats==NULL){
235	<	return NULL;
236	<	}
237	<	diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
238	<	*cur_entries=needed_entries;
239	<	}
240	<
241	<	return diskio_stats;
257	>	static void diskio_stat_destroy(sg_disk_io_stats *d) {
258	>	free(d->disk_name);
259		}
260
261	<	static diskio_stat_t *diskio_stats=NULL;
262	<	static int num_diskio=0;
261	>	VECTOR_DECLARE_STATIC(diskio_stats, sg_disk_io_stats, 10,
262	>	diskio_stat_init, diskio_stat_destroy);
263
264	<	diskio_stat_t *get_diskio_stats(int *entries){
264	>	#ifdef LINUX
265	>	typedef struct {
266	>	int major;
267	>	int minor;
268	>	} partition;
269	>	#endif
270
271	<	static int sizeof_diskio_stats=0;
272	<	diskio_stat_t *diskio_stats_ptr;
271	>	sg_disk_io_stats *sg_get_disk_io_stats(int *entries){
272	>	int num_diskio;
273	>	#ifndef LINUX
274	>	sg_disk_io_stats *diskio_stats_ptr;
275	>	#endif
276
277		#ifdef SOLARIS
278		kstat_ctl_t *kc;
#	Line 258 | Line 283 | diskio_stat_t *get_diskio_stats(int *entries){
283		FILE *f;
284		char *line_ptr;
285		int major, minor;
286	<	char dev_letter;
286	>	int has_pp_stats = 1;
287	>	VECTOR_DECLARE_STATIC(parts, partition, 16, NULL, NULL);
288	>	int i, n;
289	>	time_t now;
290	>	const char *format;
291		#endif
292	+	#if defined(FREEBSD) || defined(DFBSD)
293	+	static struct statinfo stats;
294	+	static int stats_init = 0;
295	+	int counter;
296	+	struct device_selection *dev_sel = NULL;
297	+	int n_selected, n_selections;
298	+	long sel_gen;
299	+	struct devstat *dev_ptr;
300	+	#endif
301	+	#ifdef NETBSD
302	+	struct disk_sysctl *stats;
303	+	#endif
304	+	#ifdef OPENBSD
305	+	int diskcount;
306	+	char *disknames, *name, *bufpp;
307	+	char **dk_name;
308	+	struct diskstats *stats;
309	+	#endif
310	+	#ifdef NETBSD
311	+	#define MIBSIZE 3
312	+	#endif
313	+	#ifdef OPENBSD
314	+	#define MIBSIZE 2
315	+	#endif
316	+	#if defined(NETBSD) || defined(OPENBSD)
317	+	int num_disks, i;
318	+	int mib[MIBSIZE];
319	+	size_t size;
320	+	#endif
321
322		num_diskio=0;
323
324	+	#ifdef OPENBSD
325	+	mib[0] = CTL_HW;
326	+	mib[1] = HW_DISKCOUNT;
327	+
328	+	size = sizeof(diskcount);
329	+	if (sysctl(mib, MIBSIZE, &diskcount, &size, NULL, 0) < 0) {
330	+	return NULL;
331	+	}
332	+
333	+	mib[0] = CTL_HW;
334	+	mib[1] = HW_DISKNAMES;
335	+
336	+	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
337	+	return NULL;
338	+	}
339	+
340	+	disknames = malloc(size);
341	+	if (disknames == NULL) {
342	+	return NULL;
343	+	}
344	+
345	+	if (sysctl(mib, MIBSIZE, disknames, &size, NULL, 0) < 0) {
346	+	return NULL;
347	+	}
348	+
349	+	dk_name = calloc(diskcount, sizeof(char *));
350	+	bufpp = disknames;
351	+	for (i = 0; i < diskcount && (name = strsep(&bufpp, ",")) != NULL; i++) {
352	+	dk_name[i] = name;
353	+	}
354	+	#endif
355	+
356	+	#if defined(NETBSD) || defined(OPENBSD)
357	+	mib[0] = CTL_HW;
358	+	mib[1] = HW_DISKSTATS;
359	+	#ifdef NETBSD
360	+	mib[2] = sizeof(struct disk_sysctl);
361	+	#endif
362	+
363	+	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
364	+	return NULL;
365	+	}
366	+
367	+	#ifdef NETBSD
368	+	num_disks = size / sizeof(struct disk_sysctl);
369	+	#else
370	+	num_disks = size / sizeof(struct diskstats);
371	+	#endif
372	+
373	+	stats = malloc(size);
374	+	if (stats == NULL) {
375	+	return NULL;
376	+	}
377	+
378	+	if (sysctl(mib, MIBSIZE, stats, &size, NULL, 0) < 0) {
379	+	return NULL;
380	+	}
381	+
382	+	for (i = 0; i < num_disks; i++) {
383	+	const char *name;
384	+	u_int64_t rbytes, wbytes;
385	+
386	+	#ifdef NETBSD
387	+	#ifdef HAVE_DK_RBYTES
388	+	rbytes = stats[i].dk_rbytes;
389	+	wbytes = stats[i].dk_wbytes;
390	+	#else
391	+	/* Before 1.7, NetBSD merged reads and writes. */
392	+	rbytes = wbytes = stats[i].dk_bytes;
393	+	#endif
394	+	#else
395	+	rbytes = wbytes = stats[i].ds_bytes;
396	+	#endif
397	+
398	+	/* Don't keep stats for disks that have never been used. */
399	+	if (rbytes == 0 && wbytes == 0) {
400	+	continue;
401	+	}
402	+
403	+	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
404	+	return NULL;
405	+	}
406	+	diskio_stats_ptr = diskio_stats + num_diskio;
407	+
408	+	diskio_stats_ptr->read_bytes = rbytes;
409	+	diskio_stats_ptr->write_bytes = wbytes;
410	+	#ifdef NETBSD
411	+	name = stats[i].dk_name;
412	+	#else
413	+	name = dk_name[i];
414	+	#endif
415	+	if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) {
416	+	return NULL;
417	+	}
418	+	diskio_stats_ptr->systime = time(NULL);
419	+
420	+	num_diskio++;
421	+	}
422	+
423	+	free(stats);
424	+	#ifdef OPENBSD
425	+	free(dk_name);
426	+	free(disknames);
427	+	#endif
428	+	#endif
429	+
430	+	#if defined(FREEBSD) || defined(DFBSD)
431	+	if (!stats_init) {
432	+	stats.dinfo=malloc(sizeof(struct devinfo));
433	+	if(stats.dinfo==NULL) return NULL;
434	+	bzero(stats.dinfo, sizeof(struct devinfo));
435	+	stats_init = 1;
436	+	}
437	+	#ifdef FREEBSD5
438	+	if ((devstat_getdevs(NULL, &stats)) < 0) return NULL;
439	+	/* Not aware of a get all devices, so i said 999. If we ever
440	+	* find a machine with more than 999 disks, then i'll change
441	+	* this number :)
442	+	*/
443	+	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;
444	+	#else
445	+	if ((getdevs(&stats)) < 0) return NULL;
446	+	/* Not aware of a get all devices, so i said 999. If we ever
447	+	* find a machine with more than 999 disks, then i'll change
448	+	* this number :)
449	+	*/
450	+	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;
451	+	#endif
452	+
453	+	for(counter=0;counter<stats.dinfo->numdevs;counter++){
454	+	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
455	+
456	+	/* Throw away devices that have done nothing, ever.. Eg "odd"
457	+	* devices.. like mem, proc.. and also doesn't report floppy
458	+	* drives etc unless they are doing stuff :)
459	+	*/
460	+	#ifdef FREEBSD5
461	+	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
462	+	#else
463	+	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
464	+	#endif
465	+
466	+	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
467	+	return NULL;
468	+	}
469	+	diskio_stats_ptr=diskio_stats+num_diskio;
470	+
471	+	#ifdef FREEBSD5
472	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
473	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
474	+	#else
475	+	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
476	+	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
477	+	#endif
478	+	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
479	+	if (asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number) == -1) {
480	+	return NULL;
481	+	}
482	+	diskio_stats_ptr->systime=time(NULL);
483	+
484	+	num_diskio++;
485	+	}
486	+	free(dev_sel);
487	+
488	+	#endif
489		#ifdef SOLARIS
490		if ((kc = kstat_open()) == NULL) {
491		return NULL;
#	Line 277 | Line 500 | diskio_stat_t *get_diskio_stats(int *entries){
500		if((kstat_read(kc, ksp, &kios))==-1){
501		}
502
503	<	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
503	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
504		kstat_close(kc);
505		return NULL;
506		}
507		diskio_stats_ptr=diskio_stats+num_diskio;
508
509		diskio_stats_ptr->read_bytes=kios.nread;
287	–
510		diskio_stats_ptr->write_bytes=kios.nwritten;
511	+	if (sg_update_string(&diskio_stats_ptr->disk_name,
512	+	sg_get_svr_from_bsd(ksp->ks_name)) < 0) {
513	+	return NULL;
514	+	}
515	+	diskio_stats_ptr->systime=time(NULL);
516
290	–	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
291	–
292	–	diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
517		num_diskio++;
518		}
519		}
#	Line 298 | Line 522 | diskio_stat_t *get_diskio_stats(int *entries){
522		#endif
523
524		#ifdef LINUX
525	<	f=fopen("/proc/stat", "r");
526	<	if(f==NULL){
527	<	return NULL;
525	>	num_diskio = 0;
526	>	n = 0;
527	>
528	>	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
529	>	have statistics in here too, so we can use those directly.
530	>	2.6 kernels have /proc/diskstats instead with almost (but not quite)
531	>	the same format. */
532	>
533	>	f = fopen("/proc/diskstats", "r");
534	>	format = " %d %d %99s %*d %*d %lld %*d %*d %*d %lld";
535	>	if (f == NULL) {
536	>	f = fopen("/proc/partitions", "r");
537	>	format = " %d %d %*d %99s %*d %*d %lld %*d %*d %*d %lld";
538		}
539	<	if((line_ptr=f_read_line(f, "disk_io:"))==NULL){
540	<	return NULL;
541	<	}
542	<	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
543	<	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
544	<	fclose(f);
545	<	return NULL;
539	>	if (f == NULL) goto out;
540	>	now = time(NULL);
541	>
542	>	while ((line_ptr = sg_f_read_line(f, "")) != NULL) {
543	>	char name[100];
544	>	char *s;
545	>	long long rsect, wsect;
546	>
547	>	int nr = sscanf(line_ptr, format,
548	>	&major, &minor, name, &rsect, &wsect);
549	>	if (nr < 3) continue;
550	>
551	>	/* Skip device names ending in numbers, since they're
552	>	partitions. */
553	>	s = name;
554	>	while (*s != '\0') s++;
555	>	--s;
556	>	if (*s >= '0' && *s <= '9') continue;
557	>
558	>	if (nr < 5) {
559	>	has_pp_stats = 0;
560	>	rsect = 0;
561	>	wsect = 0;
562		}
313	–	diskio_stats_ptr=diskio_stats+num_diskio;
563
564	+	if (VECTOR_RESIZE(diskio_stats, n + 1) < 0) {
565	+	goto out;
566	+	}
567	+	if (VECTOR_RESIZE(parts, n + 1) < 0) {
568	+	goto out;
569	+	}
570
571	<	sscanf(line_ptr, "(%d,%d):(%*d, %lld, %*d, %lld, %*d)", \
572	<	&major, \
573	<	&minor, \
574	<	&diskio_stats_ptr->read_bytes, \
575	<	&diskio_stats_ptr->write_bytes);
571	>	if (sg_update_string(&diskio_stats[n].disk_name, name) < 0) {
572	>	goto out;
573	>	}
574	>	diskio_stats[n].read_bytes = rsect * 512;
575	>	diskio_stats[n].write_bytes = wsect * 512;
576	>	diskio_stats[n].systime = now;
577	>	parts[n].major = major;
578	>	parts[n].minor = minor;
579
580	<	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
580	>	n++;
581	>	}
582
583	<	switch(major){
584	<	case 3:
326	<	if(minor==0){
327	<	diskio_stats_ptr->disk_name=strdup("hda");
328	<	}else{
329	<	diskio_stats_ptr->disk_name=strdup("hdb");
330	<	}
331	<	break;
583	>	fclose(f);
584	>	f = NULL;
585
586	+	if (!has_pp_stats) {
587	+	/* This is an older kernel where /proc/partitions doesn't
588	+	contain stats. Read what we can from /proc/stat instead, and
589	+	fill in the appropriate bits of the list allocated above. */
590	+
591	+	f = fopen("/proc/stat", "r");
592	+	if (f == NULL) goto out;
593	+	now = time(NULL);
594	+
595	+	line_ptr = sg_f_read_line(f, "disk_io:");
596	+	if (line_ptr == NULL) goto out;
597	+
598	+	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
599	+	long long rsect, wsect;
600	+
601	+	if (*++line_ptr == '\0') break;
602	+
603	+	if((sscanf(line_ptr,
604	+	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
605	+	&major, &minor, &rsect, &wsect)) != 4) {
606	+	continue;
607	+	}
608	+
609	+	/* Find the corresponding device from earlier.
610	+	Just to add to the fun, "minor" is actually the disk
611	+	number, not the device minor, so we need to figure
612	+	out the real minor number based on the major!
613	+	This list is not exhaustive; if you're running
614	+	an older kernel you probably don't have fancy
615	+	I2O hardware anyway... */
616	+	switch (major) {
617	+	case 3:
618	+	case 21:
619		case 22:
620	<	if(minor==0){
621	<	diskio_stats_ptr->disk_name=strdup("hdc");
622	<	}else{
623	<	diskio_stats_ptr->disk_name=strdup("hdd");
624	<	}
625	<	case 8:
626	<	dev_letter='a'+(minor/16);
627	<	diskio_stats_ptr->disk_name=malloc(4);
628	<	snprintf(diskio_stats_ptr->disk_name, 4, "sd%c", dev_letter);
620	>	case 33:
621	>	case 34:
622	>	case 36:
623	>	case 56:
624	>	case 57:
625	>	case 88:
626	>	case 89:
627	>	case 90:
628	>	case 91:
629	>	minor *= 64;
630	>	break;
631	>	case 9:
632	>	case 43:
633	>	break;
634		default:
635	<	/* I have no idea what it is then :) */
636	<	diskio_stats_ptr->disk_name=malloc(16);
637	<	snprintf(diskio_stats_ptr->disk_name, 16, "%d %d", major, minor);
638	<	}
635	>	minor *= 16;
636	>	break;
637	>	}
638	>	for (i = 0; i < n; i++) {
639	>	if (major == parts[i].major
640	>	&& minor == parts[i].minor)
641	>	break;
642	>	}
643	>	if (i == n) continue;
644
645	<	num_diskio++;
645	>	/* We read the number of blocks. Blocks are stored in
646	>	512 bytes */
647	>	diskio_stats[i].read_bytes = rsect * 512;
648	>	diskio_stats[i].write_bytes = wsect * 512;
649	>	diskio_stats[i].systime = now;
650	>	}
651		}
652
653	+	num_diskio = n;
654	+	out:
655	+	if (f != NULL) fclose(f);
656		#endif
657	+
658	+	#ifdef CYGWIN
659	+	return NULL;
660	+	#endif
661	+
662		*entries=num_diskio;
663
664		return diskio_stats;
665		}
666
667	<	diskio_stat_t *get_diskio_stats_diff(int *entries){
668	<	static diskio_stat_t *diskio_stats_diff=NULL;
669	<	static int sizeof_diskio_stats_diff=0;
670	<	diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr;
671	<	int disks, x, y;
667	>	sg_disk_io_stats *sg_get_disk_io_stats_diff(int *entries){
668	>	VECTOR_DECLARE_STATIC(diff, sg_disk_io_stats, 1,
669	>	diskio_stat_init, diskio_stat_destroy);
670	>	sg_disk_io_stats *src = NULL, *dest;
671	>	int i, j, diff_count, new_count;
672
673	<	if(diskio_stats==NULL){
674	<	diskio_stats_ptr=get_diskio_stats(&disks);
675	<	*entries=disks;
367	<	return diskio_stats_ptr;
673	>	if (diskio_stats == NULL) {
674	>	/* No previous stats, so we can't calculate a difference. */
675	>	return sg_get_disk_io_stats(entries);
676		}
677
678	<	diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff);
679	<	if(diskio_stats_diff==NULL){
678	>	/* Resize the results array to match the previous stats. */
679	>	diff_count = VECTOR_SIZE(diskio_stats);
680	>	if (VECTOR_RESIZE(diff, diff_count) < 0) {
681		return NULL;
682		}
683
684	<	diskio_stats_diff_ptr=diskio_stats_diff;
685	<	diskio_stats_ptr=diskio_stats;
684	>	/* Copy the previous stats into the result. */
685	>	for (i = 0; i < diff_count; i++) {
686	>	src = &diskio_stats[i];
687	>	dest = &diff[i];
688
689	<	for(disks=0;disks<num_diskio;disks++){
690	<	if(diskio_stats_diff_ptr->disk_name!=NULL){
380	<	free(diskio_stats_diff_ptr->disk_name);
689	>	if (sg_update_string(&dest->disk_name, src->disk_name) < 0) {
690	>	return NULL;
691		}
692	<	diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name);
693	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes;
694	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes;
695	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime;
692	>	dest->read_bytes = src->read_bytes;
693	>	dest->write_bytes = src->write_bytes;
694	>	dest->systime = src->systime;
695	>	}
696
697	<	diskio_stats_diff_ptr++;
698	<	diskio_stats_ptr++;
697	>	/* Get a new set of stats. */
698	>	if (sg_get_disk_io_stats(&new_count) == NULL) {
699	>	return NULL;
700		}
701
702	<	diskio_stats_ptr=get_diskio_stats(&disks);
703	<	diskio_stats_diff_ptr=diskio_stats_diff;
702	>	/* For each previous stat... */
703	>	for (i = 0; i < diff_count; i++) {
704	>	dest = &diff[i];
705
706	<	for(x=0;x<sizeof_diskio_stats_diff;x++){
707	<
708	<	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
709	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
710	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
711	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
712	<	}else{
401	<	diskio_stats_ptr=diskio_stats;
402	<	for(y=0;y<disks;y++){
403	<	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
404	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
405	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
406	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
407	<
408	<	break;
409	<	}
410	<
411	<	diskio_stats_ptr++;
706	>	/* ... find the corresponding new stat ... */
707	>	for (j = 0; j < new_count; j++) {
708	>	/* Try the new stat in the same position first,
709	>	since that's most likely to be it. */
710	>	src = &diskio_stats[(i + j) % new_count];
711	>	if (strcmp(src->disk_name, dest->disk_name) == 0) {
712	>	break;
713		}
714		}
715	+	if (j == new_count) {
716	+	/* No match found. */
717	+	continue;
718	+	}
719
720	<	diskio_stats_ptr++;
721	<	diskio_stats_diff_ptr++;
722	<
720	>	/* ... and subtract the previous stat from it to get the
721	>	difference. */
722	>	dest->read_bytes = src->read_bytes - dest->read_bytes;
723	>	dest->write_bytes = src->write_bytes - dest->write_bytes;
724	>	dest->systime = src->systime - dest->systime;
725		}
726	<
727	<	*entries=sizeof_diskio_stats_diff;
728	<	return diskio_stats_diff;
726	>
727	>	*entries = diff_count;
728	>	return diff;
729		}
730	+

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