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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 1.31 by ats, Sun Oct 19 02:03:02 2003 UTC vs.
Revision 1.70 by tdb, Sun Jun 20 20:32:24 2004 UTC

#	Line 1 | Line 1
1	<	/*
2	<	* i-scream central monitoring system
1	>	/*
2	>	* i-scream libstatgrab
3		* http://www.i-scream.org
4	<	* Copyright (C) 2000-2003 i-scream
4	>	* Copyright (C) 2000-2004 i-scream
5		*
6	<	* This program is free software; you can redistribute it and/or
7	<	* modify it under the terms of the GNU General Public License
8	<	* as published by the Free Software Foundation; either version 2
9	<	* of the License, or (at your option) any later version.
6	>	* This library is free software; you can redistribute it and/or
7	>	* modify it under the terms of the GNU Lesser General Public
8	>	* License as published by the Free Software Foundation; either
9	>	* version 2.1 of the License, or (at your option) any later version.
10		*
11	<	* This program is distributed in the hope that it will be useful,
11	>	* This library is distributed in the hope that it will be useful,
12		* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	<	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14	<	* GNU General Public License for more details.
13	>	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14	>	* Lesser General Public License for more details.
15		*
16	<	* You should have received a copy of the GNU General Public License
17	<	* along with this program; if not, write to the Free Software
18	<	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
16	>	* You should have received a copy of the GNU Lesser General Public
17	>	* License along with this library; if not, write to the Free Software
18	>	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19	>	* 02111-1307 USA
20	>	*
21	>	* $Id$
22		*/
23
24		#ifdef HAVE_CONFIG_H
#	Line 25 | Line 28
28		#include <stdio.h>
29		#include <stdlib.h>
30		#include <string.h>
31	+	#include <time.h>
32		#include "statgrab.h"
33	+	#include "vector.h"
34	+	#include "tools.h"
35
36		#ifdef SOLARIS
37		#include <sys/mnttab.h>
#	Line 34 | Line 40
40		#define VALID_FS_TYPES {"ufs", "tmpfs"}
41		#endif
42
43	<	#ifdef LINUX
38	<	#include <time.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	+	#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	+	#ifdef CYGWIN
57	+	#define VALID_FS_TYPES {"user"}
58	+	#endif
59	+
60		#ifdef ALLBSD
61		#include <sys/param.h>
62		#include <sys/ucred.h>
63		#include <sys/mount.h>
49	–	#define VALID_FS_TYPES {"ufs", "mfs", "ffs"}
64		#endif
65	<	#ifdef FREEBSD
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	<	#define START_VAL 1
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	<	char *copy_string(char *orig_ptr, const char *newtext){
86	<
87	<	/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
88	<	orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
62	<	if(orig_ptr==NULL){
63	<	return NULL;
64	<	}
65	<	strcpy(orig_ptr, newtext);
66	<
67	<	return orig_ptr;
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	+	static int is_valid_fs_type(const char *type) {
92	+	const char *types[] = VALID_FS_TYPES;
93	+	int i;
94
95	<	void init_disk_stat(int start, int end, disk_stat_t *disk_stats){
96	<
97	<	for(disk_stats+=start; start<=end; start++){
98	<	disk_stats->device_name=NULL;
75	<	disk_stats->fs_type=NULL;
76	<	disk_stats->mnt_point=NULL;
77	<
78	<	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;
85	<	static int watermark=-1;
86	<
87	<	char *fs_types[] = VALID_FS_TYPES;
88	<	int x, valid_type;
107	>	int valid_type;
108		int num_disks=0;
109	<	#if defined(LINUX) || defined (SOLARIS)
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;
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	+	#ifdef HAVE_STATVFS
126	+	struct statvfs *mp;
127	+	#else
128		struct statfs *mp;
129		#endif
130	+	#endif
131
109	–	if(watermark==-1){
110	–	disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
111	–	if(disk_stats==NULL){
112	–	return NULL;
113	–	}
114	–	watermark=START_VAL;
115	–	init_disk_stat(0, watermark-1, disk_stats);
116	–	}
132		#ifdef ALLBSD
133		nummnt=getmntinfo(&mp , MNT_LOCAL);
134		if (nummnt<=0){
135	+	sg_set_error(SG_ERROR_GETMNTINFO, NULL);
136		return NULL;
137		}
138		for(;nummnt--; mp++){
139	<	valid_type=0;
124	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
125	<	if(strcmp(mp->f_fstypename, fs_types[x]) ==0){
126	<	valid_type=1;
127	<	break;
128	<	}
129	<	}
139	>	valid_type = is_valid_fs_type(mp->f_fstypename);
140		#endif
141
142	<	#ifdef LINUX
142	>	#if defined(LINUX) || defined(CYGWIN)
143		if ((f=setmntent("/etc/mtab", "r" ))==NULL){
144	+	sg_set_error(SG_ERROR_SETMNTENT, NULL);
145		return NULL;
146		}
147
#	Line 139 | Line 150 | disk_stat_t *get_disk_stats(int *entries){
150		continue;
151		}
152
153	<	valid_type=0;
143	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
144	<	if(strcmp(mp->mnt_type, fs_types[x]) ==0){
145	<	valid_type=1;
146	<	break;
147	<	}
148	<	}
153	>	valid_type = is_valid_fs_type(mp->mnt_type);
154		#endif
155
156		#ifdef SOLARIS
157		if ((f=fopen("/etc/mnttab", "r" ))==NULL){
158	+	sg_set_error(SG_ERROR_OPEN, "/etc/mnttab");
159		return NULL;
160		}
161		while((getmntent(f, &mp)) == 0){
162		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
163		continue;
164		}
165	<	valid_type=0;
160	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
161	<	if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
162	<	valid_type=1;
163	<	break;
164	<	}
165	<	}
165	>	valid_type = is_valid_fs_type(mp.mnt_fstype);
166		#endif
167
168		if(valid_type){
169	<	if(num_disks>watermark-1){
170	<	disk_ptr=disk_stats;
171	<	if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){
172	<	disk_stats=disk_ptr;
173	<	return NULL;
174	<	}
175	<
176	<	watermark=watermark*2;
177	<	init_disk_stat(num_disks, watermark-1, disk_stats);
169	>	if (VECTOR_RESIZE(disk_stats, num_disks + 1) < 0) {
170	>	return NULL;
171		}
179	–
172		disk_ptr=disk_stats+num_disks;
173	+
174		#ifdef ALLBSD
175	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){
175	>	if (sg_update_string(&disk_ptr->device_name, mp->f_mntfromname) < 0) {
176		return NULL;
177		}
178	<
186	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){
178	>	if (sg_update_string(&disk_ptr->fs_type, mp->f_fstypename) < 0) {
179		return NULL;
180		}
181	<
190	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){
181	>	if (sg_update_string(&disk_ptr->mnt_point, mp->f_mntonname) < 0) {
182		return NULL;
183		}
184
#	Line 200 | Line 191 | disk_stat_t *get_disk_stats(int *entries){
191		/* Freebsd doesn't have a "available" inodes */
192		disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes;
193		#endif
194	<	#ifdef LINUX
195	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){
194	>	#if defined(LINUX) || defined(CYGWIN)
195	>	if (sg_update_string(&disk_ptr->device_name, mp->mnt_fsname) < 0) {
196		return NULL;
197		}
198
199	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){
199	>	if (sg_update_string(&disk_ptr->fs_type, mp->mnt_type) < 0) {
200		return NULL;
201		}
202
203	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){
203	>	if (sg_update_string(&disk_ptr->mnt_point, mp->mnt_dir) < 0) {
204		return NULL;
205		}
206		disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks;
#	Line 223 | Line 214 | disk_stat_t *get_disk_stats(int *entries){
214		#endif
215
216		#ifdef SOLARIS
226	–	/* Memory leak in event of realloc failing */
217		/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
218		* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
219		* be upwards of a k each
220		*/
221	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
221	>	if (sg_update_string(&disk_ptr->device_name, mp.mnt_special) < 0) {
222		return NULL;
223		}
224
225	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
226	<	return NULL;
227	<	}
225	>	if (sg_update_string(&disk_ptr->fs_type, mp.mnt_fstype) < 0) {
226	>	return NULL;
227	>	}
228
229	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
230	<	return NULL;
231	<	}
229	>	if (sg_update_string(&disk_ptr->mnt_point, mp.mnt_mountp) < 0) {
230	>	return NULL;
231	>	}
232
233		disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks;
234		disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail;
#	Line 254 | Line 244 | disk_stat_t *get_disk_stats(int *entries){
244
245		*entries=num_disks;
246
247	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
248	<	#if defined(LINUX) || defined(SOLARIS)
247	>	/* If this fails, there is very little i can do about it, so
248	>	I'll ignore it :) */
249	>	#if defined(LINUX) || defined(CYGWIN)
250	>	endmntent(f);
251	>	#endif
252	>	#if defined(SOLARIS)
253		fclose(f);
254		#endif
255
256		return disk_stats;
257
258		}
265	–	void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){
259
260	<	for(diskio_stats+=start; start<end; start++){
261	<	diskio_stats->disk_name=NULL;
262	<
263	<	diskio_stats++;
264	<	}
260	>	int sg_fs_compare_device_name(const void *va, const void *vb) {
261	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
262	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
263	>
264	>	return strcmp(a->device_name, b->device_name);
265		}
266
267	<	diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){
267	>	int sg_fs_compare_mnt_point(const void *va, const void *vb) {
268	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
269	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
270
271	<	if(diskio_stats==NULL){
271	>	return strcmp(a->mnt_point, b->mnt_point);
272	>	}
273
274	<	if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){
275	<	return NULL;
276	<	}
281	<	diskio_stat_init(0, needed_entries, diskio_stats);
282	<	*cur_entries=needed_entries;
274	>	static void diskio_stat_init(sg_disk_io_stats *d) {
275	>	d->disk_name = NULL;
276	>	}
277
278	<	return diskio_stats;
279	<	}
286	<
287	<
288	<	if(*cur_entries<needed_entries){
289	<	diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries));
290	<	if(diskio_stats==NULL){
291	<	return NULL;
292	<	}
293	<	diskio_stat_init(*cur_entries, needed_entries, diskio_stats);
294	<	*cur_entries=needed_entries;
295	<	}
296	<
297	<	return diskio_stats;
278	>	static void diskio_stat_destroy(sg_disk_io_stats *d) {
279	>	free(d->disk_name);
280		}
281
282	<	static diskio_stat_t *diskio_stats=NULL;
283	<	static int num_diskio=0;
282	>	VECTOR_DECLARE_STATIC(diskio_stats, sg_disk_io_stats, 10,
283	>	diskio_stat_init, diskio_stat_destroy);
284
285		#ifdef LINUX
286		typedef struct {
#	Line 307 | Line 289 | typedef struct {
289		} partition;
290		#endif
291
292	<	diskio_stat_t *get_diskio_stats(int *entries){
292	>	sg_disk_io_stats *sg_get_disk_io_stats(int *entries){
293	>	int num_diskio;
294	>	#ifndef LINUX
295	>	sg_disk_io_stats *diskio_stats_ptr;
296	>	#endif
297
312	–	static int sizeof_diskio_stats=0;
313	–	diskio_stat_t *diskio_stats_ptr;
314	–
298		#ifdef SOLARIS
299	<	kstat_ctl_t *kc;
300	<	kstat_t *ksp;
299	>	kstat_ctl_t *kc;
300	>	kstat_t *ksp;
301		kstat_io_t kios;
302		#endif
303		#ifdef LINUX
304		FILE *f;
305		char *line_ptr;
306		int major, minor;
324	–	char dev_letter;
307		int has_pp_stats = 1;
308	<	static partition *parts = NULL;
327	<	static int alloc_parts = 0;
308	>	VECTOR_DECLARE_STATIC(parts, partition, 16, NULL, NULL);
309		int i, n;
310		time_t now;
311	+	const char *format;
312		#endif
313	<	#ifdef FREEBSD
313	>	#if defined(FREEBSD) || defined(DFBSD)
314		static struct statinfo stats;
315		static int stats_init = 0;
316		int counter;
#	Line 338 | Line 320 | diskio_stat_t *get_diskio_stats(int *entries){
320		struct devstat *dev_ptr;
321		#endif
322		#ifdef NETBSD
323	<	/* FIXME get_diskio_stats NYI on NetBSD.
342	<	* See vmstat/dkstats.c in NetBSD source for examples.
343	<	*/
323	>	struct disk_sysctl *stats;
324		#endif
325	+	#ifdef OPENBSD
326	+	int diskcount;
327	+	char *disknames, *name, *bufpp;
328	+	char **dk_name;
329	+	struct diskstats *stats;
330	+	#endif
331	+	#ifdef NETBSD
332	+	#define MIBSIZE 3
333	+	#endif
334	+	#ifdef OPENBSD
335	+	#define MIBSIZE 2
336	+	#endif
337	+	#if defined(NETBSD) || defined(OPENBSD)
338	+	int num_disks, i;
339	+	int mib[MIBSIZE];
340	+	size_t size;
341	+	#endif
342	+
343		num_diskio=0;
344
345	<	#ifdef FREEBSD
345	>	#ifdef OPENBSD
346	>	mib[0] = CTL_HW;
347	>	mib[1] = HW_DISKCOUNT;
348	>
349	>	size = sizeof(diskcount);
350	>	if (sysctl(mib, MIBSIZE, &diskcount, &size, NULL, 0) < 0) {
351	>	sg_set_error(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKCOUNT");
352	>	return NULL;
353	>	}
354	>
355	>	mib[0] = CTL_HW;
356	>	mib[1] = HW_DISKNAMES;
357	>
358	>	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
359	>	sg_set_error(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
360	>	return NULL;
361	>	}
362	>
363	>	disknames = sg_malloc(size);
364	>	if (disknames == NULL) {
365	>	return NULL;
366	>	}
367	>
368	>	if (sysctl(mib, MIBSIZE, disknames, &size, NULL, 0) < 0) {
369	>	sg_set_error(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
370	>	return NULL;
371	>	}
372	>
373	>	dk_name = sg_malloc(diskcount * sizeof(char *));
374	>	bufpp = disknames;
375	>	for (i = 0; i < diskcount && (name = strsep(&bufpp, ",")) != NULL; i++) {
376	>	dk_name[i] = name;
377	>	}
378	>	#endif
379	>
380	>	#if defined(NETBSD) || defined(OPENBSD)
381	>	mib[0] = CTL_HW;
382	>	mib[1] = HW_DISKSTATS;
383	>	#ifdef NETBSD
384	>	mib[2] = sizeof(struct disk_sysctl);
385	>	#endif
386	>
387	>	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
388	>	sg_set_error(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
389	>	return NULL;
390	>	}
391	>
392	>	#ifdef NETBSD
393	>	num_disks = size / sizeof(struct disk_sysctl);
394	>	#else
395	>	num_disks = size / sizeof(struct diskstats);
396	>	#endif
397	>
398	>	stats = sg_malloc(size);
399	>	if (stats == NULL) {
400	>	return NULL;
401	>	}
402	>
403	>	if (sysctl(mib, MIBSIZE, stats, &size, NULL, 0) < 0) {
404	>	sg_set_error(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
405	>	return NULL;
406	>	}
407	>
408	>	for (i = 0; i < num_disks; i++) {
409	>	const char *name;
410	>	u_int64_t rbytes, wbytes;
411	>
412	>	#ifdef NETBSD
413	>	#ifdef HAVE_DK_RBYTES
414	>	rbytes = stats[i].dk_rbytes;
415	>	wbytes = stats[i].dk_wbytes;
416	>	#else
417	>	/* Before 2.0, NetBSD merged reads and writes. */
418	>	rbytes = wbytes = stats[i].dk_bytes;
419	>	#endif
420	>	#else
421	>	#ifdef HAVE_DS_RBYTES
422	>	rbytes = stats[i].ds_rbytes;
423	>	wbytes = stats[i].ds_wbytes;
424	>	#else
425	>	/* Before 3.5, OpenBSD merged reads and writes */
426	>	rbytes = wbytes = stats[i].ds_bytes;
427	>	#endif
428	>	#endif
429	>
430	>	/* Don't keep stats for disks that have never been used. */
431	>	if (rbytes == 0 && wbytes == 0) {
432	>	continue;
433	>	}
434	>
435	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
436	>	return NULL;
437	>	}
438	>	diskio_stats_ptr = diskio_stats + num_diskio;
439	>
440	>	diskio_stats_ptr->read_bytes = rbytes;
441	>	diskio_stats_ptr->write_bytes = wbytes;
442	>	#ifdef NETBSD
443	>	name = stats[i].dk_name;
444	>	#else
445	>	name = dk_name[i];
446	>	#endif
447	>	if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) {
448	>	return NULL;
449	>	}
450	>	diskio_stats_ptr->systime = time(NULL);
451	>
452	>	num_diskio++;
453	>	}
454	>
455	>	free(stats);
456	>	#ifdef OPENBSD
457	>	free(dk_name);
458	>	free(disknames);
459	>	#endif
460	>	#endif
461	>
462	>	#if defined(FREEBSD) || defined(DFBSD)
463		if (!stats_init) {
464	<	stats.dinfo=malloc(sizeof(struct devinfo));
350	<	bzero(stats.dinfo, sizeof(struct devinfo));
464	>	stats.dinfo=sg_malloc(sizeof(struct devinfo));
465		if(stats.dinfo==NULL) return NULL;
466	+	bzero(stats.dinfo, sizeof(struct devinfo));
467		stats_init = 1;
468		}
469		#ifdef FREEBSD5
470	<	if ((devstat_getdevs(NULL, &stats)) < 0) return NULL;
470	>	if ((devstat_getdevs(NULL, &stats)) < 0) {
471	>	sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL);
472	>	return NULL;
473	>	}
474		/* Not aware of a get all devices, so i said 999. If we ever
475		* find a machine with more than 999 disks, then i'll change
476		* this number :)
477		*/
478	<	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;
478	>	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) {
479	>	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
480	>	return NULL;
481	>	}
482		#else
483	<	if ((getdevs(&stats)) < 0) return NULL;
483	>	if ((getdevs(&stats)) < 0) {
484	>	sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL);
485	>	return NULL;
486	>	}
487		/* Not aware of a get all devices, so i said 999. If we ever
488		* find a machine with more than 999 disks, then i'll change
489		* this number :)
490		*/
491	<	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;
491	>	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) {
492	>	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
493	>	return NULL;
494	>	}
495		#endif
496
497		for(counter=0;counter<stats.dinfo->numdevs;counter++){
#	Line 379 | Line 506 | diskio_stat_t *get_diskio_stats(int *entries){
506		#else
507		if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
508		#endif
509	<	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
509	>
510	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
511		return NULL;
512		}
513		diskio_stats_ptr=diskio_stats+num_diskio;
#	Line 392 | Line 520 | diskio_stat_t *get_diskio_stats(int *entries){
520		diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
521		#endif
522		if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
523	<	asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number);
523	>	if (asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number) == -1) {
524	>	sg_set_error(SG_ERROR_ASPRINTF, NULL);
525	>	return NULL;
526	>	}
527		diskio_stats_ptr->systime=time(NULL);
528
529		num_diskio++;
#	Line 402 | Line 533 | diskio_stat_t *get_diskio_stats(int *entries){
533		#endif
534		#ifdef SOLARIS
535		if ((kc = kstat_open()) == NULL) {
536	<	return NULL;
537	<	}
536	>	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
537	>	return NULL;
538	>	}
539
540		for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
541	<	if (!strcmp(ksp->ks_class, "disk")) {
541	>	if (!strcmp(ksp->ks_class, "disk")) {
542
543		if(ksp->ks_type != KSTAT_TYPE_IO) continue;
544		/* We dont want metadevices appearins as num_diskio */
545		if(strcmp(ksp->ks_module, "md")==0) continue;
546	<	if((kstat_read(kc, ksp, &kios))==-1){
546	>	if((kstat_read(kc, ksp, &kios))==-1){
547		}
548
549	<	if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){
549	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
550		kstat_close(kc);
551		return NULL;
552		}
553		diskio_stats_ptr=diskio_stats+num_diskio;
554
555		diskio_stats_ptr->read_bytes=kios.nread;
424	–
556		diskio_stats_ptr->write_bytes=kios.nwritten;
557	<
558	<	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
559	<
560	<	diskio_stats_ptr->disk_name=strdup(ksp->ks_name);
557	>	if (sg_update_string(&diskio_stats_ptr->disk_name,
558	>	sg_get_svr_from_bsd(ksp->ks_name)) < 0) {
559	>	return NULL;
560	>	}
561		diskio_stats_ptr->systime=time(NULL);
562	+
563		num_diskio++;
564		}
565		}
#	Line 440 | Line 572 | diskio_stat_t *get_diskio_stats(int *entries){
572		n = 0;
573
574		/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
575	<	have statistics in here too, so we can use those directly. */
575	>	have statistics in here too, so we can use those directly.
576	>	2.6 kernels have /proc/diskstats instead with almost (but not quite)
577	>	the same format. */
578
579	<	f = fopen("/proc/partitions", "r");
579	>	f = fopen("/proc/diskstats", "r");
580	>	format = " %d %d %99s %*d %*d %lld %*d %*d %*d %lld";
581	>	if (f == NULL) {
582	>	f = fopen("/proc/partitions", "r");
583	>	format = " %d %d %*d %99s %*d %*d %lld %*d %*d %*d %lld";
584	>	}
585		if (f == NULL) goto out;
586		now = time(NULL);
587
588	<	while ((line_ptr = f_read_line(f, "")) != NULL) {
589	<	char name[20];
588	>	while ((line_ptr = sg_f_read_line(f, "")) != NULL) {
589	>	char name[100];
590		char *s;
591		long long rsect, wsect;
592
593	<	int nr = sscanf(line_ptr,
455	<	" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld",
593	>	int nr = sscanf(line_ptr, format,
594		&major, &minor, name, &rsect, &wsect);
595		if (nr < 3) continue;
458	–	if (nr < 5) {
459	–	has_pp_stats = 0;
460	–	rsect = 0;
461	–	wsect = 0;
462	–	}
596
597		/* Skip device names ending in numbers, since they're
598		partitions. */
#	Line 468 | Line 601 | diskio_stat_t *get_diskio_stats(int *entries){
601		--s;
602		if (*s >= '0' && *s <= '9') continue;
603
604	<	diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats,
605	<	diskio_stats);
606	<	if (diskio_stats == NULL) goto out;
607	<	if (n >= alloc_parts) {
475	<	alloc_parts += 16;
476	<	parts = realloc(parts, alloc_parts * sizeof *parts);
477	<	if (parts == NULL) {
478	<	alloc_parts = 0;
479	<	goto out;
480	<	}
604	>	if (nr < 5) {
605	>	has_pp_stats = 0;
606	>	rsect = 0;
607	>	wsect = 0;
608		}
609
610	<	if (diskio_stats[n].disk_name != NULL)
611	<	free(diskio_stats[n].disk_name);
612	<	diskio_stats[n].disk_name = strdup(name);
610	>	if (VECTOR_RESIZE(diskio_stats, n + 1) < 0) {
611	>	goto out;
612	>	}
613	>	if (VECTOR_RESIZE(parts, n + 1) < 0) {
614	>	goto out;
615	>	}
616	>
617	>	if (sg_update_string(&diskio_stats[n].disk_name, name) < 0) {
618	>	goto out;
619	>	}
620		diskio_stats[n].read_bytes = rsect * 512;
621		diskio_stats[n].write_bytes = wsect * 512;
622		diskio_stats[n].systime = now;
#	Line 492 | Line 626 | diskio_stat_t *get_diskio_stats(int *entries){
626		n++;
627		}
628
629	+	fclose(f);
630	+	f = NULL;
631	+
632		if (!has_pp_stats) {
633	<	/* This is an older kernel without stats in /proc/partitions.
634	<	Read what we can from /proc/stat instead. */
633	>	/* This is an older kernel where /proc/partitions doesn't
634	>	contain stats. Read what we can from /proc/stat instead, and
635	>	fill in the appropriate bits of the list allocated above. */
636
637		f = fopen("/proc/stat", "r");
638		if (f == NULL) goto out;
639		now = time(NULL);
640
641	<	line_ptr = f_read_line(f, "disk_io:");
641	>	line_ptr = sg_f_read_line(f, "disk_io:");
642		if (line_ptr == NULL) goto out;
643
644		while((line_ptr=strchr(line_ptr, ' '))!=NULL){
#	Line 561 | Line 699 | diskio_stat_t *get_diskio_stats(int *entries){
699		num_diskio = n;
700		out:
701		if (f != NULL) fclose(f);
702	+	#endif
703
704	+	#ifdef CYGWIN
705	+	sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin");
706	+	return NULL;
707		#endif
708	+
709		*entries=num_diskio;
710
711		return diskio_stats;
712		}
713
714	<	diskio_stat_t *get_diskio_stats_diff(int *entries){
715	<	static diskio_stat_t *diskio_stats_diff=NULL;
716	<	static int sizeof_diskio_stats_diff=0;
717	<	diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr;
718	<	int disks, x, y;
714	>	sg_disk_io_stats *sg_get_disk_io_stats_diff(int *entries){
715	>	VECTOR_DECLARE_STATIC(diff, sg_disk_io_stats, 1,
716	>	diskio_stat_init, diskio_stat_destroy);
717	>	sg_disk_io_stats *src = NULL, *dest;
718	>	int i, j, diff_count, new_count;
719
720	<	if(diskio_stats==NULL){
721	<	diskio_stats_ptr=get_diskio_stats(&disks);
722	<	*entries=disks;
580	<	return diskio_stats_ptr;
720	>	if (diskio_stats == NULL) {
721	>	/* No previous stats, so we can't calculate a difference. */
722	>	return sg_get_disk_io_stats(entries);
723		}
724
725	<	diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff);
726	<	if(diskio_stats_diff==NULL){
725	>	/* Resize the results array to match the previous stats. */
726	>	diff_count = VECTOR_SIZE(diskio_stats);
727	>	if (VECTOR_RESIZE(diff, diff_count) < 0) {
728		return NULL;
729		}
730
731	<	diskio_stats_diff_ptr=diskio_stats_diff;
732	<	diskio_stats_ptr=diskio_stats;
731	>	/* Copy the previous stats into the result. */
732	>	for (i = 0; i < diff_count; i++) {
733	>	src = &diskio_stats[i];
734	>	dest = &diff[i];
735
736	<	for(disks=0;disks<num_diskio;disks++){
737	<	if(diskio_stats_diff_ptr->disk_name!=NULL){
593	<	free(diskio_stats_diff_ptr->disk_name);
736	>	if (sg_update_string(&dest->disk_name, src->disk_name) < 0) {
737	>	return NULL;
738		}
739	<	diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name);
740	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes;
741	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes;
742	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime;
739	>	dest->read_bytes = src->read_bytes;
740	>	dest->write_bytes = src->write_bytes;
741	>	dest->systime = src->systime;
742	>	}
743
744	<	diskio_stats_diff_ptr++;
745	<	diskio_stats_ptr++;
744	>	/* Get a new set of stats. */
745	>	if (sg_get_disk_io_stats(&new_count) == NULL) {
746	>	return NULL;
747		}
748
749	<	diskio_stats_ptr=get_diskio_stats(&disks);
750	<	diskio_stats_diff_ptr=diskio_stats_diff;
749	>	/* For each previous stat... */
750	>	for (i = 0; i < diff_count; i++) {
751	>	dest = &diff[i];
752
753	<	for(x=0;x<sizeof_diskio_stats_diff;x++){
754	<
755	<	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
756	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
757	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
758	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
759	<	}else{
614	<	diskio_stats_ptr=diskio_stats;
615	<	for(y=0;y<disks;y++){
616	<	if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){
617	<	diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes;
618	<	diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes;
619	<	diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime;
620	<
621	<	break;
622	<	}
623	<
624	<	diskio_stats_ptr++;
753	>	/* ... find the corresponding new stat ... */
754	>	for (j = 0; j < new_count; j++) {
755	>	/* Try the new stat in the same position first,
756	>	since that's most likely to be it. */
757	>	src = &diskio_stats[(i + j) % new_count];
758	>	if (strcmp(src->disk_name, dest->disk_name) == 0) {
759	>	break;
760		}
761		}
762	+	if (j == new_count) {
763	+	/* No match found. */
764	+	continue;
765	+	}
766
767	<	diskio_stats_ptr++;
768	<	diskio_stats_diff_ptr++;
769	<
767	>	/* ... and subtract the previous stat from it to get the
768	>	difference. */
769	>	dest->read_bytes = src->read_bytes - dest->read_bytes;
770	>	dest->write_bytes = src->write_bytes - dest->write_bytes;
771	>	dest->systime = src->systime - dest->systime;
772		}
773	<
774	<	*entries=sizeof_diskio_stats_diff;
775	<	return diskio_stats_diff;
773	>
774	>	*entries = diff_count;
775	>	return diff;
776		}
777	+
778	+	int sg_disk_io_compare_name(const void *va, const void *vb) {
779	+	const sg_disk_io_stats *a = (const sg_disk_io_stats *)va;
780	+	const sg_disk_io_stats *b = (const sg_disk_io_stats *)vb;
781	+
782	+	return strcmp(a->disk_name, b->disk_name);
783	+	}
784	+

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