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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 1.88 by tdb, Fri Dec 4 22:09:30 2009 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", "nfs", "zfs"}
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	>	#include <sys/param.h>
70	>	#include <sys/mount.h>
71	>	#include <sys/sysctl.h>
72	>	/*#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \
73	>	"ufs", "mfs", "nfs", "zfs", "tmpfs", "reiserfs", \
74	>	"xfs"}*/
75	>	#endif
76	>	#if defined(NETBSD) || defined(OPENBSD)
77	>	#include <sys/param.h>
78	>	#include <sys/sysctl.h>
79	>	#include <sys/disk.h>
80	>	#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \
81	>	"ntfs", "nfs"}
82	>	#endif
83
84	<	/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
85	<	orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
86	<	if(orig_ptr==NULL){
87	<	return NULL;
88	<	}
89	<	strcpy(orig_ptr, newtext);
84	>	#ifdef HPUX
85	>	#include <sys/param.h>
86	>	#include <sys/pstat.h>
87	>	#include <sys/types.h>
88	>	#include <sys/stat.h>
89	>	#include <sys/vfs.h>
90	>	#include <mntent.h>
91	>	#include <dirent.h>
92	>	#include <stdio.h>
93	>	#include <time.h>
94	>	#define VALID_FS_TYPES {"vxfs", "hfs", "nfs"}
95	>	#define DISK_BATCH 30
96	>	#endif
97
98	<	return orig_ptr;
98	>	#ifdef WIN32
99	>	#include "win32.h"
100	>	/*#define VALID_FS_TYPES {"NTFS", "FAT", "FAT32"} unused*/
101	>	#define BUFSIZE 512
102	>	#endif
103	>
104	>	#ifdef ALLBSD
105	>	#define SG_MP_FSTYPENAME(mp) (mp)->f_fstypename
106	>	#define SG_MP_DEVNAME(mp)    (mp)->f_mntfromname
107	>	#define SG_MP_MOUNTP(mp)     (mp)->f_mntonname
108	>	#define SG_FS_FRSIZE(fs)     (long long) (*(fs))->f_bsize
109	>	#define SG_FS_BSIZE(fs)      (long long) (*(fs))->f_iosize
110	>	#define SG_FS_BLOCKS(fs)     (long long) (*(fs))->f_blocks
111	>	#define SG_FS_BFREE(fs)      (long long) (*(fs))->f_bfree
112	>	#define SG_FS_BAVAIL(fs)     (long long) (*(fs))->f_bavail
113	>	#define SG_FS_FILES(fs)      (long long) (*(fs))->f_files
114	>	#define SG_FS_FFREE(fs)      (long long) (*(fs))->f_ffree
115	>	#define SG_FS_FAVAIL(fs)     -1LL
116	>	#endif
117	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
118	>	#define SG_MP_FSTYPENAME(mp) (mp)->mnt_type
119	>	#define SG_MP_DEVNAME(mp)    (mp)->mnt_fsname
120	>	#define SG_MP_MOUNTP(mp)     (mp)->mnt_dir
121	>	#define SG_FS_FRSIZE(fs)     (long long) (fs).f_frsize
122	>	#define SG_FS_BSIZE(fs)      (long long) (fs).f_bsize
123	>	#define SG_FS_BLOCKS(fs)     (long long) (fs).f_blocks
124	>	#define SG_FS_BFREE(fs)      (long long) (fs).f_bfree
125	>	#define SG_FS_BAVAIL(fs)     (long long) (fs).f_bavail
126	>	#define SG_FS_FILES(fs)      (long long) (fs).f_files
127	>	#define SG_FS_FFREE(fs)      (long long) (fs).f_ffree
128	>	#define SG_FS_FAVAIL(fs)     (long long) (fs).f_favail
129	>	#endif
130	>	#ifdef SOLARIS
131	>	#define SG_MP_FSTYPENAME(mp) (mp).mnt_fstype
132	>	#define SG_MP_DEVNAME(mp)    (mp).mnt_special
133	>	#define SG_MP_MOUNTP(mp)     (mp).mnt_mountp
134	>	#define SG_FS_FRSIZE(fs)     (long long) (fs).f_frsize
135	>	#define SG_FS_BSIZE(fs)      (long long) (fs).f_bsize
136	>	#define SG_FS_BLOCKS(fs)     (long long) (fs).f_blocks
137	>	#define SG_FS_BFREE(fs)      (long long) (fs).f_bfree
138	>	#define SG_FS_BAVAIL(fs)     (long long) (fs).f_bavail
139	>	#define SG_FS_FILES(fs)      (long long) (fs).f_files
140	>	#define SG_FS_FFREE(fs)      (long long) (fs).f_ffree
141	>	#define SG_FS_FAVAIL(fs)     (long long) (fs).f_favail
142	>	#endif
143	>
144	>	static void disk_stat_init(sg_fs_stats *d) {
145	>	d->device_name = NULL;
146	>	d->fs_type = NULL;
147	>	d->mnt_point = NULL;
148		}
149
150	+	static void disk_stat_destroy(sg_fs_stats *d) {
151	+	free(d->device_name);
152	+	free(d->fs_type);
153	+	free(d->mnt_point);
154	+	}
155
156	<	void init_disk_stat(int start, int end, disk_stat_t *disk_stats){
156	>	#ifndef WIN32 /* not used by WIN32, so stop compiler throwing warnings */
157	>	static int is_valid_fs_type(const char *type) {
158	>	int i;
159
160	<	for(disk_stats+=start; start<=end; start++){
161	<	disk_stats->device_name=NULL;
162	<	disk_stats->fs_type=NULL;
163	<	disk_stats->mnt_point=NULL;
164	<
165	<	disk_stats++;
160	>	#if defined(FREEBSD) || defined(DFBSD)
161	>	struct xvfsconf *xvfsp;
162	>	size_t buflen;
163	>	int cnt, nbvfs = 0;
164	>
165	>	if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) {
166	>	sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME, "vfs.conflist");
167	>	return 0;
168		}
169	+	xvfsp = alloca(buflen);
170	+	if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) {
171	+	sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME, "vfs.conflist");
172	+	return 0;
173	+	}
174	+	cnt = buflen / sizeof(struct xvfsconf);
175	+	for (i = 0; i < cnt; i++) {
176	+	if (strcmp(xvfsp[i].vfc_name, type) == 0) {
177	+	return 1;
178	+	}
179	+	}
180	+	#else
181	+	const char *types[] = VALID_FS_TYPES;
182
183	+	for (i = 0; i < (int) (sizeof types / sizeof *types); i++) {
184	+	if (strcmp(types[i], type) == 0) {
185	+	return 1;
186	+	}
187	+	}
188	+	#endif
189	+	return 0;
190		}
191	+	#endif
192
193	<	disk_stat_t *get_disk_stats(int *entries){
193	>	sg_fs_stats *sg_get_fs_stats(int *entries){
194	>	VECTOR_DECLARE_STATIC(disk_stats, sg_fs_stats, 10,
195	>	disk_stat_init, disk_stat_destroy);
196
197	<	static disk_stat_t *disk_stats;
198	<	static int watermark=-1;
197	>	int num_disks=0;
198	>	#if defined(LINUX) || defined (SOLARIS) || defined(CYGWIN) || defined(HPUX)
199	>	FILE *f;
200	>	#endif
201
202	<	char *fs_types[] = VALID_FS_TYPES;
72	<	int x, valid_type;
202	>	sg_fs_stats *disk_ptr;
203
204	<	int num_disks=0;
204	>	#ifdef SOLARIS
205		struct mnttab mp;
206		struct statvfs fs;
207	<	FILE *f;
207	>	#endif
208	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
209	>	struct mntent *mp;
210	>	struct statvfs fs;
211	>	#endif
212	>	#ifdef ALLBSD
213	>	int nummnt;
214	>	#ifdef HAVE_STATVFS
215	>	struct statvfs *mp, **fs;
216	>	#else
217	>	struct statfs *mp, **fs;
218	>	#endif
219	>	#endif
220	>	#ifdef WIN32
221	>	char lp_buf[MAX_PATH];
222	>	char volume_name_buf[BUFSIZE];
223	>	char filesys_name_buf[BUFSIZE];
224	>	char drive[4] = " :\\";
225	>	char *p;
226	>	lp_buf[0]='\0';
227	>	#endif
228
229	<	disk_stat_t *disk_ptr;
229	>	#ifdef ALLBSD
230	>	nummnt=getmntinfo(&mp, MNT_WAIT);
231	>	if (nummnt<=0){
232	>	sg_set_error_with_errno(SG_ERROR_GETMNTINFO, NULL);
233	>	return NULL;
234	>	}
235	>	for(fs = &mp; nummnt--; (*fs)++){
236	>	#endif
237
238	<	if(watermark==-1){
239	<	disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
240	<	if(disk_stats==NULL){
241	<	return NULL;
242	<	}
243	<	watermark=START_VAL;
244	<	init_disk_stat(0, watermark-1, disk_stats);
238	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
239	>	#ifdef MNT_MNTTAB
240	>	if ((f=setmntent(MNT_MNTTAB, "r" ))==NULL){
241	>	#else
242	>	if ((f=setmntent("/etc/mtab", "r" ))==NULL){
243	>	#endif
244	>	sg_set_error(SG_ERROR_SETMNTENT, NULL);
245	>	return NULL;
246		}
247
248	+	while((mp=getmntent(f))){
249	+	if((statvfs(mp->mnt_dir, &fs)) !=0){
250	+	continue;
251	+	}
252
253	+	#endif
254	+
255	+	#ifdef SOLARIS
256		if ((f=fopen("/etc/mnttab", "r" ))==NULL){
257	+	sg_set_error_with_errno(SG_ERROR_OPEN, "/etc/mnttab");
258		return NULL;
259		}
260		while((getmntent(f, &mp)) == 0){
261		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
262		continue;
263		}
264	+	#endif
265
266	<	valid_type=0;
267	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
268	<	if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
269	<	valid_type=1;
270	<	break;
271	<	}
272	<	}
266	>	#ifdef WIN32
267	>	if (!(GetLogicalDriveStrings(BUFSIZE-1, lp_buf))) {
268	>	sg_set_error(SG_ERROR_GETMNTINFO, "GetLogicalDriveStrings");
269	>	return NULL;
270	>	}
271	>	p = lp_buf;
272	>	do {
273	>	// Copy drive letter to template string
274	>	*drive = *p;
275	>	// Only interested in harddrives.
276	>	int drive_type = GetDriveType(drive);
277
278	<	if(valid_type){
279	<	if(num_disks>watermark-1){
280	<	disk_ptr=disk_stats;
281	<	if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){
282	<	disk_stats=disk_ptr;
283	<	return NULL;
113	<	}
114	<
115	<	watermark=watermark*2;
116	<	init_disk_stat(num_disks, watermark-1, disk_stats);
278	>	if(drive_type == DRIVE_FIXED) {
279	>	#else
280	>	if(is_valid_fs_type(SG_MP_FSTYPENAME(mp))){
281	>	#endif
282	>	if (VECTOR_RESIZE(disk_stats, num_disks + 1) < 0) {
283	>	return NULL;
284		}
118	–
285		disk_ptr=disk_stats+num_disks;
286	<
287	<	/* Memory leak in event of realloc failing */
286	>
287	>	#ifndef WIN32
288		/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
289	<	Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE woul prob be upwards
290	<	of a k each */
291	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
289	>	* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
290	>	* be upwards of a k each
291	>	*/
292	>	if (sg_update_string(&disk_ptr->device_name, SG_MP_DEVNAME(mp)) < 0) {
293		return NULL;
294		}
295	+	if (sg_update_string(&disk_ptr->fs_type, SG_MP_FSTYPENAME(mp)) < 0) {
296	+	return NULL;
297	+	}
298	+	if (sg_update_string(&disk_ptr->mnt_point, SG_MP_MOUNTP(mp)) < 0) {
299	+	return NULL;
300	+	}
301
302	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
303	<	return NULL;
304	<	}
132	<
133	<	if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){
134	<	return NULL;
135	<	}
136	<
137	<	disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks;
138	<	disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail;
139	<	disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree);
302	>	disk_ptr->size  = SG_FS_FRSIZE(fs) * SG_FS_BLOCKS(fs);
303	>	disk_ptr->avail = SG_FS_FRSIZE(fs) * SG_FS_BAVAIL(fs);
304	>	disk_ptr->used  = (disk_ptr->size) - (SG_FS_FRSIZE(fs) * SG_FS_BFREE(fs));
305
306	<	disk_ptr->total_inodes=(long long)fs.f_files;
307	<	disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
308	<	disk_ptr->free_inodes=(long long)fs.f_favail;
306	>	disk_ptr->total_inodes = SG_FS_FILES(fs);
307	>	disk_ptr->free_inodes  = SG_FS_FFREE(fs);
308	>	/* Linux, FreeBSD don't have a "available" inodes */
309	>	disk_ptr->used_inodes  = disk_ptr->total_inodes - disk_ptr->free_inodes;
310	>	disk_ptr->avail_inodes = SG_FS_FAVAIL(fs);
311
312	+	disk_ptr->io_size      = SG_FS_BSIZE(fs);
313	+	disk_ptr->block_size   = SG_FS_FRSIZE(fs);
314	+	disk_ptr->total_blocks = SG_FS_BLOCKS(fs);
315	+	disk_ptr->free_blocks  = SG_FS_BFREE(fs);
316	+	disk_ptr->avail_blocks = SG_FS_BAVAIL(fs);
317	+	disk_ptr->used_blocks  = disk_ptr->total_blocks - disk_ptr->free_blocks;
318	+	#else
319	+	if(!GetVolumeInformation(drive, volume_name_buf, BUFSIZE,
320	+	NULL, NULL, NULL,
321	+	filesys_name_buf, BUFSIZE)) {
322	+	sg_set_error_with_errno(SG_ERROR_DISKINFO,
323	+	"GetVolumeInformation");
324	+	return NULL;
325	+	}
326	+
327	+	if (sg_update_string(&disk_ptr->device_name,
328	+	volume_name_buf) < 0) {
329	+	return NULL;
330	+	}
331	+	if (sg_update_string(&disk_ptr->fs_type,
332	+	filesys_name_buf) < 0) {
333	+	return NULL;
334	+	}
335	+	if (sg_update_string(&disk_ptr->mnt_point,
336	+	drive) < 0) {
337	+	return NULL;
338	+	}
339	+	if (!GetDiskFreeSpaceEx(drive, NULL,
340	+	(PULARGE_INTEGER)&disk_ptr->size,
341	+	(PULARGE_INTEGER)&disk_ptr->avail)) {
342	+	sg_set_error_with_errno(SG_ERROR_DISKINFO,
343	+	"GetDiskFreeSpaceEx");
344	+	return NULL;
345	+	}
346	+	disk_ptr->used = disk_ptr->size - disk_ptr->avail;
347	+	disk_ptr->total_inodes = 0;
348	+	disk_ptr->free_inodes  = 0;
349	+	disk_ptr->used_inodes  = 0;
350	+	disk_ptr->avail_inodes = 0;
351	+
352	+	/* I dunno what to do with these... so have nothing */
353	+	disk_ptr->io_size = 0;
354	+	disk_ptr->block_size = 0;
355	+	disk_ptr->total_blocks = 0;
356	+	disk_ptr->free_blocks = 0;
357	+	disk_ptr->avail_blocks = 0;
358	+	disk_ptr->used_blocks = 0;
359	+	#endif
360		num_disks++;
361		}
362	+	#ifdef WIN32
363	+	while(*p++);
364	+	} while(*p);
365	+	#else
366		}
367	+	#endif
368
369		*entries=num_disks;
370
371	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
371	>	/* If this fails, there is very little i can do about it, so
372	>	I'll ignore it :) */
373	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
374	>	endmntent(f);
375	>	#endif
376	>	#if defined(SOLARIS)
377		fclose(f);
378	+	#endif
379
380		return disk_stats;
381
382		}
383
384	<	diskio_stat_t *get_diskio_stats(int *entries){
384	>	int sg_fs_compare_device_name(const void *va, const void *vb) {
385	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
386	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
387
388	<	/* Do jibble */
388	>	return strcmp(a->device_name, b->device_name);
389	>	}
390	>
391	>	int sg_fs_compare_mnt_point(const void *va, const void *vb) {
392	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
393	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
394	>
395	>	return strcmp(a->mnt_point, b->mnt_point);
396	>	}
397	>
398	>	static void diskio_stat_init(sg_disk_io_stats *d) {
399	>	d->disk_name = NULL;
400	>	}
401	>
402	>	static void diskio_stat_destroy(sg_disk_io_stats *d) {
403	>	free(d->disk_name);
404	>	}
405	>
406	>	VECTOR_DECLARE_STATIC(diskio_stats, sg_disk_io_stats, 10,
407	>	diskio_stat_init, diskio_stat_destroy);
408	>
409	>	#ifdef LINUX
410	>	typedef struct {
411	>	int major;
412	>	int minor;
413	>	} partition;
414	>	#endif
415	>
416	>	sg_disk_io_stats *sg_get_disk_io_stats(int *entries){
417	>	int num_diskio;
418	>	#ifndef LINUX
419	>	sg_disk_io_stats *diskio_stats_ptr;
420	>	#endif
421	>
422	>	#ifdef HPUX
423	>	long long rbytes = 0, wbytes = 0;
424	>	struct dirent *dinfo = NULL;
425	>	struct stat lstatinfo;
426	>	struct pst_diskinfo pstat_diskinfo[DISK_BATCH];
427	>	char fullpathbuf[1024] = {0};
428	>	dev_t diskid;
429	>	DIR *dh = NULL;
430	>	int diskidx = 0;
431	>	int num, i;
432	>	#endif
433	>	#ifdef SOLARIS
434	>	kstat_ctl_t *kc;
435	>	kstat_t *ksp;
436	>	kstat_io_t kios;
437	>	#endif
438	>	#ifdef LINUX
439	>	FILE *f;
440	>	char *line_ptr;
441	>	int major, minor;
442	>	int has_pp_stats = 1;
443	>	VECTOR_DECLARE_STATIC(parts, partition, 16, NULL, NULL);
444	>	int i, n;
445	>	time_t now;
446	>	const char *format;
447	>	static regex_t not_part_re, part_re;
448	>	static int re_compiled = 0;
449	>	#endif
450	>	#if defined(FREEBSD) || defined(DFBSD)
451	>	static struct statinfo stats;
452	>	static int stats_init = 0;
453	>	int counter;
454	>	struct device_selection *dev_sel = NULL;
455	>	int n_selected, n_selections;
456	>	long sel_gen;
457	>	struct devstat *dev_ptr;
458	>	#endif
459	>	#ifdef NETBSD
460	>	struct disk_sysctl *stats;
461	>	#endif
462	>	#ifdef OPENBSD
463	>	int diskcount;
464	>	char *disknames, *name, *bufpp;
465	>	char **dk_name;
466	>	struct diskstats *stats;
467	>	#endif
468	>	#ifdef NETBSD
469	>	#define MIBSIZE 3
470	>	#endif
471	>	#ifdef OPENBSD
472	>	#define MIBSIZE 2
473	>	#endif
474	>	#if defined(NETBSD) || defined(OPENBSD)
475	>	int num_disks, i;
476	>	int mib[MIBSIZE];
477	>	size_t size;
478	>	#endif
479	>	#ifdef WIN32
480	>	char *name;
481	>	long long rbytes;
482	>	long long wbytes;
483	>	#endif
484	>
485	>	num_diskio=0;
486	>
487	>	#ifdef HPUX
488	>	while (1) {
489	>	num = pstat_getdisk(pstat_diskinfo, sizeof pstat_diskinfo[0],
490	>	DISK_BATCH, diskidx);
491	>	if (num == -1) {
492	>	sg_set_error_with_errno(SG_ERROR_PSTAT,
493	>	"pstat_getdisk");
494	>	return NULL;
495	>	} else if (num == 0) {
496	>	break;
497	>	}
498	>
499	>	for (i = 0; i < num; i++) {
500	>	struct pst_diskinfo *di = &pstat_diskinfo[i];
501	>
502	>	/* Skip "disabled" disks. */
503	>	if (di->psd_status == 0) {
504	>	continue;
505	>	}
506	>
507	>	/* We can't seperate the reads from the writes, we'll
508	>	* just give the same to each. (This value is in
509	>	* 64-byte chunks according to the pstat header file,
510	>	* and can wrap to be negative.)
511	>	*/
512	>	rbytes = wbytes = ((unsigned long) di->psd_dkwds) * 64LL;
513	>
514	>	/* Skip unused disks. */
515	>	if (rbytes == 0 && wbytes == 0) {
516	>	continue;
517	>	}
518	>
519	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
520	>	return NULL;
521	>	}
522	>
523	>	diskio_stats_ptr = diskio_stats + num_diskio;
524	>
525	>	diskio_stats_ptr->read_bytes = rbytes;
526	>	diskio_stats_ptr->write_bytes = wbytes;
527	>
528	>	diskio_stats_ptr->systime = time(NULL);
529	>
530	>	num_diskio++;
531	>
532	>	/* FIXME This should use a static cache, like the Linux
533	>	* code below. */
534	>	if (diskio_stats_ptr->disk_name == NULL) {
535	>	dh = opendir("/dev/dsk");
536	>	if (dh == NULL) {
537	>	continue;
538	>	}
539	>
540	>	diskid = (di->psd_dev.psd_major << 24) | di->psd_dev.psd_minor;
541	>	while (1) {
542	>	dinfo = readdir(dh);
543	>	if (dinfo == NULL) {
544	>	break;
545	>	}
546	>	snprintf(fullpathbuf, sizeof(fullpathbuf), "/dev/dsk/%s", dinfo->d_name);
547	>	if (lstat(fullpathbuf, &lstatinfo) < 0) {
548	>	continue;
549	>	}
550	>
551	>	if (lstatinfo.st_rdev == diskid) {
552	>	if (sg_update_string(&diskio_stats_ptr->disk_name, dinfo->d_name) < 0) {
553	>	return NULL;
554	>	}
555	>	break;
556	>	}
557	>	}
558	>	closedir(dh);
559	>
560	>	if (diskio_stats_ptr->disk_name == NULL) {
561	>	if (sg_update_string(&diskio_stats_ptr->disk_name, di->psd_hw_path.psh_name) < 0) {
562	>	return NULL;
563	>	}
564	>	}
565	>	}
566	>	}
567	>	diskidx = pstat_diskinfo[num - 1].psd_idx + 1;
568	>	}
569	>	#endif
570	>	#ifdef OPENBSD
571	>	mib[0] = CTL_HW;
572	>	mib[1] = HW_DISKCOUNT;
573	>
574	>	size = sizeof(diskcount);
575	>	if (sysctl(mib, MIBSIZE, &diskcount, &size, NULL, 0) < 0) {
576	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKCOUNT");
577	>	return NULL;
578	>	}
579	>
580	>	mib[0] = CTL_HW;
581	>	mib[1] = HW_DISKNAMES;
582	>
583	>	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
584	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
585	>	return NULL;
586	>	}
587	>
588	>	disknames = sg_malloc(size);
589	>	if (disknames == NULL) {
590	>	return NULL;
591	>	}
592	>
593	>	if (sysctl(mib, MIBSIZE, disknames, &size, NULL, 0) < 0) {
594	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
595	>	return NULL;
596	>	}
597	>
598	>	dk_name = sg_malloc(diskcount * sizeof(char *));
599	>	bufpp = disknames;
600	>	for (i = 0; i < diskcount && (name = strsep(&bufpp, ",")) != NULL; i++) {
601	>	dk_name[i] = name;
602	>	}
603	>	#endif
604	>
605	>	#if defined(NETBSD) || defined(OPENBSD)
606	>	mib[0] = CTL_HW;
607	>	mib[1] = HW_DISKSTATS;
608	>	#ifdef NETBSD
609	>	mib[2] = sizeof(struct disk_sysctl);
610	>	#endif
611	>
612	>	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
613	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
614	>	return NULL;
615	>	}
616	>
617	>	#ifdef NETBSD
618	>	num_disks = size / sizeof(struct disk_sysctl);
619	>	#else
620	>	num_disks = size / sizeof(struct diskstats);
621	>	#endif
622	>
623	>	stats = sg_malloc(size);
624	>	if (stats == NULL) {
625	>	return NULL;
626	>	}
627	>
628	>	if (sysctl(mib, MIBSIZE, stats, &size, NULL, 0) < 0) {
629	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
630	>	return NULL;
631	>	}
632	>
633	>	for (i = 0; i < num_disks; i++) {
634	>	const char *name;
635	>	u_int64_t rbytes, wbytes;
636	>
637	>	#ifdef NETBSD
638	>	#ifdef HAVE_DK_RBYTES
639	>	rbytes = stats[i].dk_rbytes;
640	>	wbytes = stats[i].dk_wbytes;
641	>	#else
642	>	/* Before 2.0, NetBSD merged reads and writes. */
643	>	rbytes = wbytes = stats[i].dk_bytes;
644	>	#endif
645	>	#else
646	>	#ifdef HAVE_DS_RBYTES
647	>	rbytes = stats[i].ds_rbytes;
648	>	wbytes = stats[i].ds_wbytes;
649	>	#else
650	>	/* Before 3.5, OpenBSD merged reads and writes */
651	>	rbytes = wbytes = stats[i].ds_bytes;
652	>	#endif
653	>	#endif
654	>
655	>	/* Don't keep stats for disks that have never been used. */
656	>	if (rbytes == 0 && wbytes == 0) {
657	>	continue;
658	>	}
659	>
660	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
661	>	return NULL;
662	>	}
663	>	diskio_stats_ptr = diskio_stats + num_diskio;
664	>
665	>	diskio_stats_ptr->read_bytes = rbytes;
666	>	diskio_stats_ptr->write_bytes = wbytes;
667	>	#ifdef NETBSD
668	>	name = stats[i].dk_name;
669	>	#else
670	>	name = dk_name[i];
671	>	#endif
672	>	if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) {
673	>	return NULL;
674	>	}
675	>	diskio_stats_ptr->systime = time(NULL);
676	>
677	>	num_diskio++;
678	>	}
679	>
680	>	free(stats);
681	>	#ifdef OPENBSD
682	>	free(dk_name);
683	>	free(disknames);
684	>	#endif
685	>	#endif
686	>
687	>	#if defined(FREEBSD) || defined(DFBSD)
688	>	if (!stats_init) {
689	>	stats.dinfo=sg_malloc(sizeof(struct devinfo));
690	>	if(stats.dinfo==NULL) return NULL;
691	>	bzero(stats.dinfo, sizeof(struct devinfo));
692	>	stats_init = 1;
693	>	}
694	>	#ifdef FREEBSD5
695	>	if ((devstat_getdevs(NULL, &stats)) < 0) {
696	>	/* FIXME devstat functions return a string error in
697	>	devstat_errbuf */
698	>	sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL);
699	>	return NULL;
700	>	}
701	>	/* Not aware of a get all devices, so i said 999. If we ever
702	>	* find a machine with more than 999 disks, then i'll change
703	>	* this number :)
704	>	*/
705	>	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) {
706	>	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
707	>	return NULL;
708	>	}
709	>	#else
710	>	if ((getdevs(&stats)) < 0) {
711	>	sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL);
712	>	return NULL;
713	>	}
714	>	/* Not aware of a get all devices, so i said 999. If we ever
715	>	* find a machine with more than 999 disks, then i'll change
716	>	* this number :)
717	>	*/
718	>	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) {
719	>	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
720	>	return NULL;
721	>	}
722	>	#endif
723	>
724	>	for(counter=0;counter<stats.dinfo->numdevs;counter++){
725	>	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
726	>
727	>	/* Throw away devices that have done nothing, ever.. Eg "odd"
728	>	* devices.. like mem, proc.. and also doesn't report floppy
729	>	* drives etc unless they are doing stuff :)
730	>	*/
731	>	#ifdef FREEBSD5
732	>	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
733	>	#else
734	>	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
735	>	#endif
736	>
737	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
738	>	return NULL;
739	>	}
740	>	diskio_stats_ptr=diskio_stats+num_diskio;
741	>
742	>	#ifdef FREEBSD5
743	>	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
744	>	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
745	>	#else
746	>	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
747	>	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
748	>	#endif
749	>	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
750	>	if (asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number) == -1) {
751	>	sg_set_error_with_errno(SG_ERROR_ASPRINTF, NULL);
752	>	return NULL;
753	>	}
754	>	diskio_stats_ptr->systime=time(NULL);
755	>
756	>	num_diskio++;
757	>	}
758	>	free(dev_sel);
759	>
760	>	#endif
761	>	#ifdef SOLARIS
762	>	if ((kc = kstat_open()) == NULL) {
763	>	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
764	>	return NULL;
765	>	}
766	>
767	>	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
768	>	if (!strcmp(ksp->ks_class, "disk")) {
769	>
770	>	if(ksp->ks_type != KSTAT_TYPE_IO) continue;
771	>	/* We dont want metadevices appearins as num_diskio */
772	>	if(strcmp(ksp->ks_module, "md")==0) continue;
773	>	if((kstat_read(kc, ksp, &kios))==-1){
774	>	}
775	>
776	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
777	>	kstat_close(kc);
778	>	return NULL;
779	>	}
780	>	diskio_stats_ptr=diskio_stats+num_diskio;
781	>
782	>	diskio_stats_ptr->read_bytes=kios.nread;
783	>	diskio_stats_ptr->write_bytes=kios.nwritten;
784	>	if (sg_update_string(&diskio_stats_ptr->disk_name,
785	>	sg_get_svr_from_bsd(ksp->ks_name)) < 0) {
786	>	kstat_close(kc);
787	>	return NULL;
788	>	}
789	>	diskio_stats_ptr->systime=time(NULL);
790	>
791	>	num_diskio++;
792	>	}
793	>	}
794	>
795	>	kstat_close(kc);
796	>	#endif
797	>
798	>	#ifdef LINUX
799	>	num_diskio = 0;
800	>	n = 0;
801	>
802	>	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
803	>	have statistics in here too, so we can use those directly.
804	>	2.6 kernels have /proc/diskstats instead with almost (but not quite)
805	>	the same format. */
806	>
807	>	f = fopen("/proc/diskstats", "r");
808	>	format = " %d %d %99s %*d %*d %lld %*d %*d %*d %lld";
809	>	if (f == NULL) {
810	>	f = fopen("/proc/partitions", "r");
811	>	format = " %d %d %*d %99s %*d %*d %lld %*d %*d %*d %lld";
812	>	}
813	>	if (f == NULL) goto out;
814	>	now = time(NULL);
815	>
816	>	if (!re_compiled) {
817	>	if (regcomp(&part_re, "^(.*/)?[^/]*[0-9]$", REG_EXTENDED | REG_NOSUB) != 0) {
818	>	sg_set_error(SG_ERROR_PARSE, NULL);
819	>	goto out;
820	>	}
821	>	if (regcomp(&not_part_re, "^(.*/)?[^/0-9]+[0-9]+d[0-9]+$", REG_EXTENDED | REG_NOSUB) != 0) {
822	>	sg_set_error(SG_ERROR_PARSE, NULL);
823	>	goto out;
824	>	}
825	>	re_compiled = 1;
826	>	}
827	>
828	>	while ((line_ptr = sg_f_read_line(f, "")) != NULL) {
829	>	char name[100];
830	>	long long rsect, wsect;
831	>
832	>	int nr = sscanf(line_ptr, format,
833	>	&major, &minor, name, &rsect, &wsect);
834	>	if (nr < 3) continue;
835	>
836	>	/* Skip device names ending in numbers, since they're
837	>	partitions, unless they match the c0d0 pattern that some
838	>	RAID devices use. */
839	>	/* FIXME: For 2.6+, we should probably be using sysfs to detect
840	>	this... */
841	>	if ((regexec(&part_re, name, 0, NULL, 0) == 0)
842	>	&& (regexec(&not_part_re, name, 0, NULL, 0) != 0)) {
843	>	continue;
844	>	}
845	>
846	>	if (nr < 5) {
847	>	has_pp_stats = 0;
848	>	rsect = 0;
849	>	wsect = 0;
850	>	}
851	>
852	>	if (VECTOR_RESIZE(diskio_stats, n + 1) < 0) {
853	>	goto out;
854	>	}
855	>	if (VECTOR_RESIZE(parts, n + 1) < 0) {
856	>	goto out;
857	>	}
858	>
859	>	if (sg_update_string(&diskio_stats[n].disk_name, name) < 0) {
860	>	goto out;
861	>	}
862	>	diskio_stats[n].read_bytes = rsect * 512;
863	>	diskio_stats[n].write_bytes = wsect * 512;
864	>	diskio_stats[n].systime = now;
865	>	parts[n].major = major;
866	>	parts[n].minor = minor;
867	>
868	>	n++;
869	>	}
870	>
871	>	fclose(f);
872	>	f = NULL;
873	>
874	>	if (!has_pp_stats) {
875	>	/* This is an older kernel where /proc/partitions doesn't
876	>	contain stats. Read what we can from /proc/stat instead, and
877	>	fill in the appropriate bits of the list allocated above. */
878	>
879	>	f = fopen("/proc/stat", "r");
880	>	if (f == NULL) goto out;
881	>	now = time(NULL);
882	>
883	>	line_ptr = sg_f_read_line(f, "disk_io:");
884	>	if (line_ptr == NULL) goto out;
885	>
886	>	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
887	>	long long rsect, wsect;
888	>
889	>	if (*++line_ptr == '\0') break;
890	>
891	>	if((sscanf(line_ptr,
892	>	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
893	>	&major, &minor, &rsect, &wsect)) != 4) {
894	>	continue;
895	>	}
896	>
897	>	/* Find the corresponding device from earlier.
898	>	Just to add to the fun, "minor" is actually the disk
899	>	number, not the device minor, so we need to figure
900	>	out the real minor number based on the major!
901	>	This list is not exhaustive; if you're running
902	>	an older kernel you probably don't have fancy
903	>	I2O hardware anyway... */
904	>	switch (major) {
905	>	case 3:
906	>	case 21:
907	>	case 22:
908	>	case 33:
909	>	case 34:
910	>	case 36:
911	>	case 56:
912	>	case 57:
913	>	case 88:
914	>	case 89:
915	>	case 90:
916	>	case 91:
917	>	minor *= 64;
918	>	break;
919	>	case 9:
920	>	case 43:
921	>	break;
922	>	default:
923	>	minor *= 16;
924	>	break;
925	>	}
926	>	for (i = 0; i < n; i++) {
927	>	if (major == parts[i].major
928	>	&& minor == parts[i].minor)
929	>	break;
930	>	}
931	>	if (i == n) continue;
932	>
933	>	/* We read the number of blocks. Blocks are stored in
934	>	512 bytes */
935	>	diskio_stats[i].read_bytes = rsect * 512;
936	>	diskio_stats[i].write_bytes = wsect * 512;
937	>	diskio_stats[i].systime = now;
938	>	}
939	>	}
940	>
941	>	num_diskio = n;
942	>	out:
943	>	if (f != NULL) fclose(f);
944	>	#endif
945	>
946	>	#ifdef CYGWIN
947	>	sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin");
948		return NULL;
949	+	#endif
950	+
951	+	#ifdef WIN32
952	+	sg_set_error(SG_ERROR_NONE, NULL);
953	+
954	+	while((name = get_diskio(num_diskio, &rbytes, &wbytes)) != NULL) {
955	+	if (VECTOR_RESIZE(diskio_stats, num_diskio+1)) {
956	+	return NULL;
957	+	}
958	+
959	+	diskio_stats_ptr = diskio_stats + num_diskio;
960	+
961	+	if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) {
962	+	return NULL;
963	+	}
964	+	sg_update_string(&name, NULL);
965	+	diskio_stats_ptr->read_bytes = rbytes;
966	+	diskio_stats_ptr->write_bytes = wbytes;
967	+
968	+	diskio_stats_ptr->systime = 0;
969	+
970	+	num_diskio++;
971	+	}
972	+	#endif
973	+
974	+	*entries=num_diskio;
975	+
976	+	return diskio_stats;
977		}
978	+
979	+	sg_disk_io_stats *sg_get_disk_io_stats_diff(int *entries){
980	+	#ifndef WIN32
981	+	VECTOR_DECLARE_STATIC(diff, sg_disk_io_stats, 1,
982	+	diskio_stat_init, diskio_stat_destroy);
983	+	sg_disk_io_stats *src = NULL, *dest;
984	+	int i, j, diff_count, new_count;
985	+
986	+	if (diskio_stats == NULL) {
987	+	/* No previous stats, so we can't calculate a difference. */
988	+	return sg_get_disk_io_stats(entries);
989	+	}
990	+
991	+	/* Resize the results array to match the previous stats. */
992	+	diff_count = VECTOR_SIZE(diskio_stats);
993	+	if (VECTOR_RESIZE(diff, diff_count) < 0) {
994	+	return NULL;
995	+	}
996	+
997	+	/* Copy the previous stats into the result. */
998	+	for (i = 0; i < diff_count; i++) {
999	+	src = &diskio_stats[i];
1000	+	dest = &diff[i];
1001	+
1002	+	if (sg_update_string(&dest->disk_name, src->disk_name) < 0) {
1003	+	return NULL;
1004	+	}
1005	+	dest->read_bytes = src->read_bytes;
1006	+	dest->write_bytes = src->write_bytes;
1007	+	dest->systime = src->systime;
1008	+	}
1009	+
1010	+	/* Get a new set of stats. */
1011	+	if (sg_get_disk_io_stats(&new_count) == NULL) {
1012	+	return NULL;
1013	+	}
1014	+
1015	+	/* For each previous stat... */
1016	+	for (i = 0; i < diff_count; i++) {
1017	+	dest = &diff[i];
1018	+
1019	+	/* ... find the corresponding new stat ... */
1020	+	for (j = 0; j < new_count; j++) {
1021	+	/* Try the new stat in the same position first,
1022	+	since that's most likely to be it. */
1023	+	src = &diskio_stats[(i + j) % new_count];
1024	+	if (strcmp(src->disk_name, dest->disk_name) == 0) {
1025	+	break;
1026	+	}
1027	+	}
1028	+	if (j == new_count) {
1029	+	/* No match found. */
1030	+	continue;
1031	+	}
1032	+
1033	+	/* ... and subtract the previous stat from it to get the
1034	+	difference. */
1035	+	dest->read_bytes = src->read_bytes - dest->read_bytes;
1036	+	dest->write_bytes = src->write_bytes - dest->write_bytes;
1037	+	dest->systime = src->systime - dest->systime;
1038	+	}
1039	+
1040	+	*entries = diff_count;
1041	+	return diff;
1042	+	#else /* WIN32 */
1043	+	return sg_get_disk_io_stats(entries);
1044	+	#endif
1045	+	}
1046	+
1047	+	int sg_disk_io_compare_name(const void *va, const void *vb) {
1048	+	const sg_disk_io_stats *a = (const sg_disk_io_stats *)va;
1049	+	const sg_disk_io_stats *b = (const sg_disk_io_stats *)vb;
1050	+
1051	+	return strcmp(a->disk_name, b->disk_name);
1052	+	}
1053	+

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