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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 1.89 by tdb, Sun Oct 3 18:35:57 2010 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", "ext4", "vxfs", "hfs", "hfsplus", "hpfs", \
52	+	"jffs", "jffs2", "minix", "msdos", "ntfs", "qnx4", \
53	+	"ramfs", "rootfs", "reiserfs", "sysv", "v7", "udf", \
54	+	"ufs", "umsdos", "vfat", "xfs", "jfs", "nfs", \
55	+	"ocfs", "cifs"}
56		#endif
57
58	<	#define START_VAL 1
58	>	#ifdef CYGWIN
59	>	#define VALID_FS_TYPES {"user"}
60	>	#endif
61
62	<	char *copy_string(char *orig_ptr, const char *newtext){
62	>	#ifdef ALLBSD
63	>	#include <sys/param.h>
64	>	#include <sys/ucred.h>
65	>	#include <sys/mount.h>
66	>	#endif
67	>	#if defined(FREEBSD) || defined(DFBSD)
68	>	#include <sys/dkstat.h>
69	>	#include <devstat.h>
70	>	#include <sys/param.h>
71	>	#include <sys/mount.h>
72	>	#include <sys/sysctl.h>
73	>	/*#define VALID_FS_TYPES {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \
74	>	"ufs", "mfs", "nfs", "zfs", "tmpfs", "reiserfs", \
75	>	"xfs"}*/
76	>	static char **VALID_FS_TYPES;
77	>	static size_t n_valid_fs_types;
78	>	#endif
79	>	#if defined(NETBSD) || defined(OPENBSD)
80	>	#include <sys/param.h>
81	>	#include <sys/sysctl.h>
82	>	#include <sys/disk.h>
83	>	#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \
84	>	"ntfs", "nfs"}
85	>	#endif
86
87	<	/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */
88	<	orig_ptr=realloc(orig_ptr, (1+strlen(newtext)));
89	<	if(orig_ptr==NULL){
90	<	return NULL;
91	<	}
92	<	strcpy(orig_ptr, newtext);
87	>	#ifdef HPUX
88	>	#include <sys/param.h>
89	>	#include <sys/pstat.h>
90	>	#include <sys/types.h>
91	>	#include <sys/stat.h>
92	>	#include <sys/vfs.h>
93	>	#include <mntent.h>
94	>	#include <dirent.h>
95	>	#include <stdio.h>
96	>	#include <time.h>
97	>	#define VALID_FS_TYPES {"vxfs", "hfs", "nfs"}
98	>	#define DISK_BATCH 30
99	>	#endif
100
101	<	return orig_ptr;
101	>	#ifdef AIX
102	>	#include <unistd.h>
103	>	#include <errno.h>
104	>	#include <ctype.h>
105	>	#include <fcntl.h>
106	>	#include <fstab.h>
107	>	#include <sys/statfs.h>
108	>	#include <sys/mntctl.h>
109	>	#include <sys/vmount.h>
110	>	#include <libperfstat.h>
111	>	#define KNOWN_VALID_FS_TYPES {          \
112	>	"jfs2",         /*  0 */        \
113	>	"namefs",       /*  1 */        \
114	>	"nfs",          /*  2 */        \
115	>	"jfs",          /*  3 */        \
116	>	NULL,           /*  4 */        \
117	>	"cdrom",        /*  5 */        \
118	>	"procfs",       /*  6 */        \
119	>	NULL,           /*  7 */        \
120	>	NULL,           /*  8 */        \
121	>	NULL,           /*  9 */        \
122	>	NULL,           /* 10 */        \
123	>	NULL,           /* 11 */        \
124	>	NULL,           /* 12 */        \
125	>	NULL,           /* 13 */        \
126	>	NULL,           /* 14 */        \
127	>	NULL,           /* 15 */        \
128	>	"sfs",          /* 16 */        \
129	>	"cachefs",      /* 17 */        \
130	>	"nfs3",         /* 18 */        \
131	>	"autofs",       /* 19 */        \
132	>	NULL,           /* 20 */        \
133	>	NULL,           /* 21 */        \
134	>	NULL,           /* 22 */        \
135	>	NULL,           /* 23 */        \
136	>	NULL,           /* 24 */        \
137	>	NULL,           /* 25 */        \
138	>	NULL,           /* 26 */        \
139	>	NULL,           /* 27 */        \
140	>	NULL,           /* 28 */        \
141	>	NULL,           /* 29 */        \
142	>	NULL,           /* 30 */        \
143	>	NULL,           /* 31 */        \
144	>	"vxfs",         /* 32 */        \
145	>	"vxodm",        /* 33 */        \
146	>	"udf",          /* 34 */        \
147	>	"nfs4",         /* 35 */        \
148	>	"rfs4",         /* 36 */        \
149	>	"cifs"          /* 37 */        \
150		}
151	+	static char *VALID_FS_TYPES[MNT_AIXLAST + 1] = KNOWN_VALID_FS_TYPES;
152	+	extern int mntctl(int, int, void *);
153	+	#endif
154
155	+	#ifdef WIN32
156	+	#include "win32.h"
157	+	/*#define VALID_FS_TYPES {"NTFS", "FAT", "FAT32"} unused*/
158	+	#define BUFSIZE 512
159	+	#endif
160
161	<	void init_disk_stat(int start, int end, disk_stat_t *disk_stats){
161	>	#ifdef ALLBSD
162	>	#define SG_MP_FSTYPENAME(mp) (mp)->f_fstypename
163	>	#define SG_MP_DEVNAME(mp)    (mp)->f_mntfromname
164	>	#define SG_MP_MOUNTP(mp)     (mp)->f_mntonname
165	>	#define SG_FS_FRSIZE(fs)     (long long) (*(fs))->f_bsize
166	>	#define SG_FS_BSIZE(fs)      (long long) (*(fs))->f_iosize
167	>	#define SG_FS_BLOCKS(fs)     (long long) (*(fs))->f_blocks
168	>	#define SG_FS_BFREE(fs)      (long long) (*(fs))->f_bfree
169	>	#define SG_FS_BAVAIL(fs)     (long long) (*(fs))->f_bavail
170	>	#define SG_FS_FILES(fs)      (long long) (*(fs))->f_files
171	>	#define SG_FS_FFREE(fs)      (long long) (*(fs))->f_ffree
172	>	#define SG_FS_FAVAIL(fs)     -1LL
173	>	#endif
174	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
175	>	#define SG_MP_FSTYPENAME(mp) (mp)->mnt_type
176	>	#define SG_MP_DEVNAME(mp)    (mp)->mnt_fsname
177	>	#define SG_MP_MOUNTP(mp)     (mp)->mnt_dir
178	>	#define SG_FS_FRSIZE(fs)     (long long) (fs).f_frsize
179	>	#define SG_FS_BSIZE(fs)      (long long) (fs).f_bsize
180	>	#define SG_FS_BLOCKS(fs)     (long long) (fs).f_blocks
181	>	#define SG_FS_BFREE(fs)      (long long) (fs).f_bfree
182	>	#define SG_FS_BAVAIL(fs)     (long long) (fs).f_bavail
183	>	#define SG_FS_FILES(fs)      (long long) (fs).f_files
184	>	#define SG_FS_FFREE(fs)      (long long) (fs).f_ffree
185	>	#define SG_FS_FAVAIL(fs)     (long long) (fs).f_favail
186	>	#endif
187	>	#ifdef SOLARIS
188	>	#define SG_MP_FSTYPENAME(mp) (mp).mnt_fstype
189	>	#define SG_MP_DEVNAME(mp)    (mp).mnt_special
190	>	#define SG_MP_MOUNTP(mp)     (mp).mnt_mountp
191	>	#define SG_FS_FRSIZE(fs)     (long long) (fs).f_frsize
192	>	#define SG_FS_BSIZE(fs)      (long long) (fs).f_bsize
193	>	#define SG_FS_BLOCKS(fs)     (long long) (fs).f_blocks
194	>	#define SG_FS_BFREE(fs)      (long long) (fs).f_bfree
195	>	#define SG_FS_BAVAIL(fs)     (long long) (fs).f_bavail
196	>	#define SG_FS_FILES(fs)      (long long) (fs).f_files
197	>	#define SG_FS_FFREE(fs)      (long long) (fs).f_ffree
198	>	#define SG_FS_FAVAIL(fs)     (long long) (fs).f_favail
199	>	#endif
200	>	#ifdef AIX
201	>	#define SG_MP_FSTYPENAME(mp) VALID_FS_TYPES[(mp)->vmt_gfstype]
202	>	#define SG_MP_DEVNAME(mp)    vmt2dataptr((mp),0)
203	>	#define SG_MP_MOUNTP(mp)     vmt2dataptr((mp),1)
204	>	#define SG_FS_FRSIZE(fs)     (fs).f_fsize
205	>	#define SG_FS_BSIZE(fs)      (fs).f_blocks
206	>	#define SG_FS_BLOCKS(fs)     (fs).f_blocks
207	>	#define SG_FS_BFREE(fs)      (fs).f_bfree
208	>	#define SG_FS_BAVAIL(fs)     (fs).f_bavail
209	>	#define SG_FS_FILES(fs)      (fs).f_files
210	>	#define SG_FS_FFREE(fs)      (fs).f_ffree
211	>	#define SG_FS_FAVAIL(fs)     ((fs).f_files - (fs).f_ffree)
212	>	#endif
213
214	<	for(disk_stats+=start; start<=end; start++){
215	<	disk_stats->device_name=NULL;
216	<	disk_stats->fs_type=NULL;
217	<	disk_stats->mnt_point=NULL;
218	<
219	<	disk_stats++;
214	>	static void disk_stat_init(sg_fs_stats *d) {
215	>	d->device_name = NULL;
216	>	d->fs_type = NULL;
217	>	d->mnt_point = NULL;
218	>	}
219	>
220	>	static void disk_stat_destroy(sg_fs_stats *d) {
221	>	free(d->device_name);
222	>	free(d->fs_type);
223	>	free(d->mnt_point);
224	>	}
225	>
226	>	static int valid_fs_types_initialized = 0;
227	>
228	>	static int init_valid_fs_types() {
229	>	#if defined(FREEBSD) || defined(DFBSD)
230	>	struct xvfsconf *xvfsp;
231	>	size_t buflen;
232	>	int nbvfs = 0;
233	>
234	>	if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) {
235	>	sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME, "vfs.conflist");
236	>	return 0;
237		}
238	+	xvfsp = alloca(buflen);
239	+	if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) {
240	+	sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME, "vfs.conflist");
241	+	return 0;
242	+	}
243	+	n_valid_fs_types = buflen / sizeof(struct xvfsconf);
244	+	VALID_FS_TYPES = malloc( n_valid_fs_types * sizeof(char **) );
245	+	if( 0 == VALID_FS_TYPES ) {
246	+	sg_set_error_with_errno(SG_ERROR_MALLOC, "init_valid_fs_types");
247	+	return 0;
248	+	}
249	+	for (i = 0; i < n_valid_fs_types; i++) {
250	+	VALID_FS_TYPES[i] = strdup(xvfsp[i].vfc_name);
251	+	}
252	+	#elif defined(AIX)
253	+	FILE *fh;
254
255	+	fh = fopen("/etc/vfs", "r");
256	+	if( 0 != fh ) {
257	+	char line[4096];
258	+
259	+	while( fgets( line, 4096, fh ) ) {
260	+	char fstype[16], mnt_helper[PATH_MAX], filesys_helper[PATH_MAX], remote[16];
261	+	int  fstype_id;
262	+	if( line[0] < 'a' || line[0] > 'z' ) {
263	+	continue; /* not a valid fstype */
264	+	}
265	+	sscanf(line, "%s %d %s %s %s", fstype, &fstype_id, mnt_helper, filesys_helper, remote);
266	+	if( VALID_FS_TYPES[fstype_id] != NULL ) {
267	+	continue; /* we already know you ... */
268	+	}
269	+	VALID_FS_TYPES[fstype_id] = strdup(fstype);
270	+	}
271	+
272	+	fclose(fh);
273	+	}
274	+	return 1;
275	+	#else
276	+	return 1;
277	+	#endif
278		}
279
280	<	disk_stat_t *get_disk_stats(int *entries){
280	>	#ifndef WIN32 /* not used by WIN32, so stop compiler throwing warnings */
281	>	static int is_valid_fs_type(const char *type) {
282	>	size_t i;
283	>	#if defined(AIX)
284	>	char **types = VALID_FS_TYPES;
285	>	size_t n_valid_fs_types = sizeof VALID_FS_TYPES / sizeof *VALID_FS_TYPES;
286	>	#elif !defined(FREEBSD) && !defined(DFBSD)
287	>	const char *types[] = VALID_FS_TYPES;
288	>	size_t n_valid_fs_types = sizeof types / sizeof *types;
289	>	#else
290	>	char **types = VALID_FS_TYPES;
291	>	#endif
292
293	<	static disk_stat_t *disk_stats;
294	<	static int watermark=-1;
293	>	for (i = 0; i < n_valid_fs_types; i++) {
294	>	if( types[i] == NULL) {
295	>	continue;
296	>	}
297	>	if (strcmp(types[i], type) == 0) {
298	>	return 1;
299	>	}
300	>	}
301
302	<	char *fs_types[] = VALID_FS_TYPES;
303	<	int x, valid_type;
302	>	return 0;
303	>	}
304	>	#endif
305
306	+	sg_fs_stats *sg_get_fs_stats(int *entries){
307	+	VECTOR_DECLARE_STATIC(disk_stats, sg_fs_stats, 10,
308	+	disk_stat_init, disk_stat_destroy);
309	+
310		int num_disks=0;
311	+	#if defined(LINUX) || defined (SOLARIS) || defined(CYGWIN) || defined(HPUX)
312	+	FILE *f;
313	+	#endif
314	+
315	+	sg_fs_stats *disk_ptr;
316	+
317	+	#ifdef SOLARIS
318		struct mnttab mp;
319		struct statvfs fs;
320	<	FILE *f;
320	>	#endif
321	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
322	>	struct mntent *mp;
323	>	struct statvfs fs;
324	>	#endif
325	>	#ifdef ALLBSD
326	>	int nummnt;
327	>	#ifdef HAVE_STATVFS
328	>	struct statvfs *mp, **fs;
329	>	#else
330	>	struct statfs *mp, **fs;
331	>	#endif
332	>	#endif
333	>	#ifdef WIN32
334	>	char lp_buf[MAX_PATH];
335	>	char volume_name_buf[BUFSIZE];
336	>	char filesys_name_buf[BUFSIZE];
337	>	char drive[4] = " :\\";
338	>	char *p;
339	>	lp_buf[0]='\0';
340	>	#endif
341	>	#ifdef AIX
342	>	struct vmount *buf, *mp;
343	>	int rc, i;
344	>	size_t bufsize = 4096;
345	>	struct statfs64 fs;
346	>	#endif
347
348	<	disk_stat_t *disk_ptr;
348	>	if( !valid_fs_types_initialized ) {
349	>	init_valid_fs_types();
350	>	valid_fs_types_initialized = 1;
351	>	}
352
353	<	if(watermark==-1){
354	<	disk_stats=malloc(START_VAL * sizeof(disk_stat_t));
355	<	if(disk_stats==NULL){
356	<	return NULL;
357	<	}
86	<	watermark=START_VAL;
87	<	init_disk_stat(0, watermark-1, disk_stats);
353	>	#ifdef ALLBSD
354	>	nummnt=getmntinfo(&mp, MNT_WAIT);
355	>	if (nummnt<=0){
356	>	sg_set_error_with_errno(SG_ERROR_GETMNTINFO, NULL);
357	>	return NULL;
358		}
359	+	for(fs = &mp; nummnt--; (*fs)++){
360	+	#endif
361
362	+	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
363	+	#ifdef MNT_MNTTAB
364	+	if ((f=setmntent(MNT_MNTTAB, "r" ))==NULL){
365	+	#else
366	+	if ((f=setmntent("/etc/mtab", "r" ))==NULL){
367	+	#endif
368	+	sg_set_error(SG_ERROR_SETMNTENT, NULL);
369	+	return NULL;
370	+	}
371
372	+	while((mp=getmntent(f))){
373	+	if((statvfs(mp->mnt_dir, &fs)) !=0){
374	+	continue;
375	+	}
376	+
377	+	#endif
378	+
379	+	#ifdef SOLARIS
380		if ((f=fopen("/etc/mnttab", "r" ))==NULL){
381	+	sg_set_error_with_errno(SG_ERROR_OPEN, "/etc/mnttab");
382		return NULL;
383		}
384		while((getmntent(f, &mp)) == 0){
385		if ((statvfs(mp.mnt_mountp, &fs)) !=0){
386		continue;
387		}
388	+	#endif
389
390	<	valid_type=0;
391	<	for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){
392	<	if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){
393	<	valid_type=1;
394	<	break;
395	<	}
390	>	#ifdef AIX
391	>	buf = malloc( bufsize );
392	>	if( 0 == buf ) {
393	>	sg_set_error_with_errno(SG_ERROR_MALLOC, "mntctl");
394	>	return NULL;
395	>	}
396	>
397	>	rc = mntctl( MCTL_QUERY, bufsize, buf );
398	>	if( 0 == rc )
399	>	{
400	>	bufsize = buf->vmt_revision;
401	>	void *newbuf = realloc( buf, bufsize );
402	>	if( 0 == newbuf ) {
403	>	sg_set_error_with_errno(SG_ERROR_MALLOC, "mntctl");
404	>	free(buf);
405	>	return NULL;
406		}
407	+	buf = newbuf;
408
409	<	if(valid_type){
410	<	if(num_disks>watermark-1){
109	<	disk_ptr=disk_stats;
110	<	if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){
111	<	disk_stats=disk_ptr;
112	<	return NULL;
113	<	}
409	>	rc = mntctl( MCTL_QUERY, bufsize, buf );
410	>	}
411
412	<	watermark=watermark*2;
413	<	init_disk_stat(num_disks, watermark-1, disk_stats);
414	<	}
412	>	if( -1 == rc ) {
413	>	sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME, "mntctl");
414	>	return NULL;
415	>	}
416
417	+	for( i = 0, mp = buf;
418	+	i < rc;
419	+	++i, mp = (struct vmount *)(((char *)mp) + mp->vmt_length ) )
420	+	{
421	+	int fd;
422	+	if((fd = open(vmt2dataptr((mp),1), O_RDONLY)) == -1) {
423	+	continue;
424	+	}
425	+	if(fstatfs64(fd, &fs) == -1) {
426	+	continue;
427	+	}
428	+
429	+	#endif
430	+
431	+	#ifdef WIN32
432	+	if (!(GetLogicalDriveStrings(BUFSIZE-1, lp_buf))) {
433	+	sg_set_error(SG_ERROR_GETMNTINFO, "GetLogicalDriveStrings");
434	+	return NULL;
435	+	}
436	+	p = lp_buf;
437	+	do {
438	+	// Copy drive letter to template string
439	+	*drive = *p;
440	+	// Only interested in harddrives.
441	+	int drive_type = GetDriveType(drive);
442	+
443	+	if(drive_type == DRIVE_FIXED) {
444	+	#else
445	+	if(is_valid_fs_type(SG_MP_FSTYPENAME(mp))){
446	+	#endif
447	+	if (VECTOR_RESIZE(disk_stats, num_disks + 1) < 0) {
448	+	return NULL;
449	+	}
450		disk_ptr=disk_stats+num_disks;
451	<
452	<	/* Memory leak in event of realloc failing */
451	>
452	>	#ifndef WIN32
453		/* Maybe make this char[bigenough] and do strncpy's and put a null in the end?
454	<	Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE woul prob be upwards
455	<	of a k each */
456	<	if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){
454	>	* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob
455	>	* be upwards of a k each
456	>	*/
457	>	if (sg_update_string(&disk_ptr->device_name, SG_MP_DEVNAME(mp)) < 0) {
458		return NULL;
459		}
460	+	if (sg_update_string(&disk_ptr->fs_type, SG_MP_FSTYPENAME(mp)) < 0) {
461	+	return NULL;
462	+	}
463	+	if (sg_update_string(&disk_ptr->mnt_point, SG_MP_MOUNTP(mp)) < 0) {
464	+	return NULL;
465	+	}
466
467	<	if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){
468	<	return NULL;
469	<	}
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);
467	>	disk_ptr->size  = SG_FS_FRSIZE(fs) * SG_FS_BLOCKS(fs);
468	>	disk_ptr->avail = SG_FS_FRSIZE(fs) * SG_FS_BAVAIL(fs);
469	>	disk_ptr->used  = (disk_ptr->size) - (SG_FS_FRSIZE(fs) * SG_FS_BFREE(fs));
470
471	<	disk_ptr->total_inodes=(long long)fs.f_files;
472	<	disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree;
473	<	disk_ptr->free_inodes=(long long)fs.f_favail;
471	>	disk_ptr->total_inodes = SG_FS_FILES(fs);
472	>	disk_ptr->free_inodes  = SG_FS_FFREE(fs);
473	>	/* Linux, FreeBSD don't have a "available" inodes */
474	>	disk_ptr->used_inodes  = disk_ptr->total_inodes - disk_ptr->free_inodes;
475	>	disk_ptr->avail_inodes = SG_FS_FAVAIL(fs);
476
477	+	disk_ptr->io_size      = SG_FS_BSIZE(fs);
478	+	disk_ptr->block_size   = SG_FS_FRSIZE(fs);
479	+	disk_ptr->total_blocks = SG_FS_BLOCKS(fs);
480	+	disk_ptr->free_blocks  = SG_FS_BFREE(fs);
481	+	disk_ptr->avail_blocks = SG_FS_BAVAIL(fs);
482	+	disk_ptr->used_blocks  = disk_ptr->total_blocks - disk_ptr->free_blocks;
483	+	#else
484	+	if(!GetVolumeInformation(drive, volume_name_buf, BUFSIZE,
485	+	NULL, NULL, NULL,
486	+	filesys_name_buf, BUFSIZE)) {
487	+	sg_set_error_with_errno(SG_ERROR_DISKINFO,
488	+	"GetVolumeInformation");
489	+	return NULL;
490	+	}
491	+
492	+	if (sg_update_string(&disk_ptr->device_name,
493	+	volume_name_buf) < 0) {
494	+	return NULL;
495	+	}
496	+	if (sg_update_string(&disk_ptr->fs_type,
497	+	filesys_name_buf) < 0) {
498	+	return NULL;
499	+	}
500	+	if (sg_update_string(&disk_ptr->mnt_point,
501	+	drive) < 0) {
502	+	return NULL;
503	+	}
504	+	if (!GetDiskFreeSpaceEx(drive, NULL,
505	+	(PULARGE_INTEGER)&disk_ptr->size,
506	+	(PULARGE_INTEGER)&disk_ptr->avail)) {
507	+	sg_set_error_with_errno(SG_ERROR_DISKINFO,
508	+	"GetDiskFreeSpaceEx");
509	+	return NULL;
510	+	}
511	+	disk_ptr->used = disk_ptr->size - disk_ptr->avail;
512	+	disk_ptr->total_inodes = 0;
513	+	disk_ptr->free_inodes  = 0;
514	+	disk_ptr->used_inodes  = 0;
515	+	disk_ptr->avail_inodes = 0;
516	+
517	+	/* I dunno what to do with these... so have nothing */
518	+	disk_ptr->io_size = 0;
519	+	disk_ptr->block_size = 0;
520	+	disk_ptr->total_blocks = 0;
521	+	disk_ptr->free_blocks = 0;
522	+	disk_ptr->avail_blocks = 0;
523	+	disk_ptr->used_blocks = 0;
524	+	#endif
525		num_disks++;
526		}
527	+	#ifdef WIN32
528	+	while(*p++);
529	+	} while(*p);
530	+	#else
531		}
532	+	#endif
533
534		*entries=num_disks;
535
536	<	/* If this fails, there is very little i can do about it, so i'll ignore it :) */
536	>	/* If this fails, there is very little i can do about it, so
537	>	I'll ignore it :) */
538	>	#if defined(LINUX) || defined(CYGWIN) || defined(HPUX)
539	>	endmntent(f);
540	>	#endif
541	>	#if defined(SOLARIS)
542		fclose(f);
543	+	#endif
544
545		return disk_stats;
546
547		}
548
549	<	diskio_stat_t *get_diskio_stats(int *entries){
549	>	int sg_fs_compare_device_name(const void *va, const void *vb) {
550	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
551	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
552
553	<	/* Do jibble */
553	>	return strcmp(a->device_name, b->device_name);
554	>	}
555	>
556	>	int sg_fs_compare_mnt_point(const void *va, const void *vb) {
557	>	const sg_fs_stats *a = (const sg_fs_stats *)va;
558	>	const sg_fs_stats *b = (const sg_fs_stats *)vb;
559	>
560	>	return strcmp(a->mnt_point, b->mnt_point);
561	>	}
562	>
563	>	static void diskio_stat_init(sg_disk_io_stats *d) {
564	>	d->disk_name = NULL;
565	>	}
566	>
567	>	static void diskio_stat_destroy(sg_disk_io_stats *d) {
568	>	free(d->disk_name);
569	>	}
570	>
571	>	VECTOR_DECLARE_STATIC(diskio_stats, sg_disk_io_stats, 10,
572	>	diskio_stat_init, diskio_stat_destroy);
573	>
574	>	#ifdef LINUX
575	>	typedef struct {
576	>	int major;
577	>	int minor;
578	>	} partition;
579	>	#endif
580	>
581	>	sg_disk_io_stats *sg_get_disk_io_stats(int *entries){
582	>	int num_diskio;
583	>	#ifndef LINUX
584	>	sg_disk_io_stats *diskio_stats_ptr;
585	>	#endif
586	>
587	>	#ifdef HPUX
588	>	long long rbytes = 0, wbytes = 0;
589	>	struct dirent *dinfo = NULL;
590	>	struct stat lstatinfo;
591	>	struct pst_diskinfo pstat_diskinfo[DISK_BATCH];
592	>	char fullpathbuf[1024] = {0};
593	>	dev_t diskid;
594	>	DIR *dh = NULL;
595	>	int diskidx = 0;
596	>	int num, i;
597	>	#endif
598	>	#ifdef SOLARIS
599	>	kstat_ctl_t *kc;
600	>	kstat_t *ksp;
601	>	kstat_io_t kios;
602	>	#endif
603	>	#ifdef LINUX
604	>	FILE *f;
605	>	char *line_ptr;
606	>	int major, minor;
607	>	int has_pp_stats = 1;
608	>	VECTOR_DECLARE_STATIC(parts, partition, 16, NULL, NULL);
609	>	int i, n;
610	>	time_t now;
611	>	const char *format;
612	>	static regex_t not_part_re, part_re;
613	>	static int re_compiled = 0;
614	>	#endif
615	>	#if defined(FREEBSD) || defined(DFBSD)
616	>	static struct statinfo stats;
617	>	static int stats_init = 0;
618	>	int counter;
619	>	struct device_selection *dev_sel = NULL;
620	>	int n_selected, n_selections;
621	>	long sel_gen;
622	>	struct devstat *dev_ptr;
623	>	#endif
624	>	#ifdef NETBSD
625	>	struct disk_sysctl *stats;
626	>	#endif
627	>	#ifdef OPENBSD
628	>	int diskcount;
629	>	char *disknames, *name, *bufpp;
630	>	char **dk_name;
631	>	struct diskstats *stats;
632	>	#endif
633	>	#ifdef NETBSD
634	>	#define MIBSIZE 3
635	>	#endif
636	>	#ifdef OPENBSD
637	>	#define MIBSIZE 2
638	>	#endif
639	>	#if defined(NETBSD) || defined(OPENBSD)
640	>	int num_disks, i;
641	>	int mib[MIBSIZE];
642	>	size_t size;
643	>	#endif
644	>	#ifdef AIX
645	>	int ret, disks;
646	>	perfstat_disk_t *dskperf;
647	>	perfstat_id_t name;
648	>	#endif
649	>	#ifdef WIN32
650	>	char *name;
651	>	long long rbytes;
652	>	long long wbytes;
653	>	#endif
654	>
655	>	num_diskio=0;
656	>
657	>	#ifdef AIX
658	>	/* check how many perfstat_disk_t structures are available */
659	>	disks = perfstat_disk(NULL, NULL, sizeof(perfstat_disk_t), 0);
660	>	if(disks==-1) {
661	>	sg_set_error_with_errno(SG_ERROR_PSTAT, "perfstat_disk(NULL)");
662	>	return NULL;
663	>	}
664	>
665	>	dskperf = malloc( sizeof(perfstat_disk_t) * disks);
666	>	if( 0 == dskperf ) {
667	>	sg_set_error_with_errno(SG_ERROR_MALLOC, "sg_get_disk_io_stats");
668	>	return NULL;
669	>	}
670	>
671	>	name.name[0]=0;
672	>	ret = perfstat_disk(&name, dskperf, sizeof(perfstat_disk_t), disks);
673	>	if(ret == -1) {
674	>	sg_set_error_with_errno(SG_ERROR_PSTAT, "perfstat_disk");
675	>	return NULL;
676	>	}
677	>
678	>	for (num_diskio = 0; num_diskio < ret; num_diskio++) {
679	>
680	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
681	>	return NULL;
682	>	}
683	>
684	>	diskio_stats_ptr = diskio_stats + num_diskio;
685	>
686	>	diskio_stats_ptr->read_bytes = dskperf[num_diskio].bsize * dskperf[num_diskio].rblks;
687	>	diskio_stats_ptr->write_bytes = dskperf[num_diskio].bsize * dskperf[num_diskio].wblks;
688	>	diskio_stats_ptr->systime = dskperf[num_diskio].time;
689	>
690	>	if (diskio_stats_ptr->disk_name == NULL) {
691	>	int i;
692	>	for(i = 0; i < IDENTIFIER_LENGTH; ++i) {
693	>	char *s = dskperf[num_diskio].name + i;
694	>	if( !(isalpha(*s) || isdigit(*s) ||
695	>	*s == '-' || *s == '_' || *s == ' ') ) {
696	>	*s = 0;
697	>	break;
698	>	}
699	>	}
700	>	if (sg_update_string(&diskio_stats_ptr->disk_name, dskperf[num_diskio].name) < 0) {
701	>	return NULL;
702	>	}
703	>	}
704	>	}
705	>	#endif
706	>
707	>	#ifdef HPUX
708	>	while (1) {
709	>	num = pstat_getdisk(pstat_diskinfo, sizeof pstat_diskinfo[0],
710	>	DISK_BATCH, diskidx);
711	>	if (num == -1) {
712	>	sg_set_error_with_errno(SG_ERROR_PSTAT,
713	>	"pstat_getdisk");
714	>	return NULL;
715	>	} else if (num == 0) {
716	>	break;
717	>	}
718	>
719	>	for (i = 0; i < num; i++) {
720	>	struct pst_diskinfo *di = &pstat_diskinfo[i];
721	>
722	>	/* Skip "disabled" disks. */
723	>	if (di->psd_status == 0) {
724	>	continue;
725	>	}
726	>
727	>	/* We can't seperate the reads from the writes, we'll
728	>	* just give the same to each. (This value is in
729	>	* 64-byte chunks according to the pstat header file,
730	>	* and can wrap to be negative.)
731	>	*/
732	>	rbytes = wbytes = ((unsigned long) di->psd_dkwds) * 64LL;
733	>
734	>	/* Skip unused disks. */
735	>	if (rbytes == 0 && wbytes == 0) {
736	>	continue;
737	>	}
738	>
739	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
740	>	return NULL;
741	>	}
742	>
743	>	diskio_stats_ptr = diskio_stats + num_diskio;
744	>
745	>	diskio_stats_ptr->read_bytes = rbytes;
746	>	diskio_stats_ptr->write_bytes = wbytes;
747	>
748	>	diskio_stats_ptr->systime = time(NULL);
749	>
750	>	num_diskio++;
751	>
752	>	/* FIXME This should use a static cache, like the Linux
753	>	* code below. */
754	>	if (diskio_stats_ptr->disk_name == NULL) {
755	>	dh = opendir("/dev/dsk");
756	>	if (dh == NULL) {
757	>	continue;
758	>	}
759	>
760	>	diskid = (di->psd_dev.psd_major << 24) | di->psd_dev.psd_minor;
761	>	while (1) {
762	>	dinfo = readdir(dh);
763	>	if (dinfo == NULL) {
764	>	break;
765	>	}
766	>	snprintf(fullpathbuf, sizeof(fullpathbuf), "/dev/dsk/%s", dinfo->d_name);
767	>	if (lstat(fullpathbuf, &lstatinfo) < 0) {
768	>	continue;
769	>	}
770	>
771	>	if (lstatinfo.st_rdev == diskid) {
772	>	if (sg_update_string(&diskio_stats_ptr->disk_name, dinfo->d_name) < 0) {
773	>	return NULL;
774	>	}
775	>	break;
776	>	}
777	>	}
778	>	closedir(dh);
779	>
780	>	if (diskio_stats_ptr->disk_name == NULL) {
781	>	if (sg_update_string(&diskio_stats_ptr->disk_name, di->psd_hw_path.psh_name) < 0) {
782	>	return NULL;
783	>	}
784	>	}
785	>	}
786	>	}
787	>	diskidx = pstat_diskinfo[num - 1].psd_idx + 1;
788	>	}
789	>	#endif
790	>	#ifdef OPENBSD
791	>	mib[0] = CTL_HW;
792	>	mib[1] = HW_DISKCOUNT;
793	>
794	>	size = sizeof(diskcount);
795	>	if (sysctl(mib, MIBSIZE, &diskcount, &size, NULL, 0) < 0) {
796	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKCOUNT");
797	>	return NULL;
798	>	}
799	>
800	>	mib[0] = CTL_HW;
801	>	mib[1] = HW_DISKNAMES;
802	>
803	>	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
804	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
805	>	return NULL;
806	>	}
807	>
808	>	disknames = sg_malloc(size);
809	>	if (disknames == NULL) {
810	>	return NULL;
811	>	}
812	>
813	>	if (sysctl(mib, MIBSIZE, disknames, &size, NULL, 0) < 0) {
814	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKNAMES");
815	>	return NULL;
816	>	}
817	>
818	>	dk_name = sg_malloc(diskcount * sizeof(char *));
819	>	bufpp = disknames;
820	>	for (i = 0; i < diskcount && (name = strsep(&bufpp, ",")) != NULL; i++) {
821	>	dk_name[i] = name;
822	>	}
823	>	#endif
824	>
825	>	#if defined(NETBSD) || defined(OPENBSD)
826	>	mib[0] = CTL_HW;
827	>	mib[1] = HW_DISKSTATS;
828	>	#ifdef NETBSD
829	>	mib[2] = sizeof(struct disk_sysctl);
830	>	#endif
831	>
832	>	if (sysctl(mib, MIBSIZE, NULL, &size, NULL, 0) < 0) {
833	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
834	>	return NULL;
835	>	}
836	>
837	>	#ifdef NETBSD
838	>	num_disks = size / sizeof(struct disk_sysctl);
839	>	#else
840	>	num_disks = size / sizeof(struct diskstats);
841	>	#endif
842	>
843	>	stats = sg_malloc(size);
844	>	if (stats == NULL) {
845	>	return NULL;
846	>	}
847	>
848	>	if (sysctl(mib, MIBSIZE, stats, &size, NULL, 0) < 0) {
849	>	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_DISKSTATS");
850	>	return NULL;
851	>	}
852	>
853	>	for (i = 0; i < num_disks; i++) {
854	>	const char *name;
855	>	u_int64_t rbytes, wbytes;
856	>
857	>	#ifdef NETBSD
858	>	#ifdef HAVE_DK_RBYTES
859	>	rbytes = stats[i].dk_rbytes;
860	>	wbytes = stats[i].dk_wbytes;
861	>	#else
862	>	/* Before 2.0, NetBSD merged reads and writes. */
863	>	rbytes = wbytes = stats[i].dk_bytes;
864	>	#endif
865	>	#else
866	>	#ifdef HAVE_DS_RBYTES
867	>	rbytes = stats[i].ds_rbytes;
868	>	wbytes = stats[i].ds_wbytes;
869	>	#else
870	>	/* Before 3.5, OpenBSD merged reads and writes */
871	>	rbytes = wbytes = stats[i].ds_bytes;
872	>	#endif
873	>	#endif
874	>
875	>	/* Don't keep stats for disks that have never been used. */
876	>	if (rbytes == 0 && wbytes == 0) {
877	>	continue;
878	>	}
879	>
880	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
881	>	return NULL;
882	>	}
883	>	diskio_stats_ptr = diskio_stats + num_diskio;
884	>
885	>	diskio_stats_ptr->read_bytes = rbytes;
886	>	diskio_stats_ptr->write_bytes = wbytes;
887	>	#ifdef NETBSD
888	>	name = stats[i].dk_name;
889	>	#else
890	>	name = dk_name[i];
891	>	#endif
892	>	if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) {
893	>	return NULL;
894	>	}
895	>	diskio_stats_ptr->systime = time(NULL);
896	>
897	>	num_diskio++;
898	>	}
899	>
900	>	free(stats);
901	>	#ifdef OPENBSD
902	>	free(dk_name);
903	>	free(disknames);
904	>	#endif
905	>	#endif
906	>
907	>	#if defined(FREEBSD) || defined(DFBSD)
908	>	if (!stats_init) {
909	>	stats.dinfo=sg_malloc(sizeof(struct devinfo));
910	>	if(stats.dinfo==NULL) return NULL;
911	>	bzero(stats.dinfo, sizeof(struct devinfo));
912	>	stats_init = 1;
913	>	}
914	>	#ifdef FREEBSD5
915	>	if ((devstat_getdevs(NULL, &stats)) < 0) {
916	>	/* FIXME devstat functions return a string error in
917	>	devstat_errbuf */
918	>	sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL);
919	>	return NULL;
920	>	}
921	>	/* Not aware of a get all devices, so i said 999. If we ever
922	>	* find a machine with more than 999 disks, then i'll change
923	>	* this number :)
924	>	*/
925	>	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) {
926	>	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
927	>	return NULL;
928	>	}
929	>	#else
930	>	if ((getdevs(&stats)) < 0) {
931	>	sg_set_error(SG_ERROR_DEVSTAT_GETDEVS, NULL);
932	>	return NULL;
933	>	}
934	>	/* Not aware of a get all devices, so i said 999. If we ever
935	>	* find a machine with more than 999 disks, then i'll change
936	>	* this number :)
937	>	*/
938	>	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) {
939	>	sg_set_error(SG_ERROR_DEVSTAT_SELECTDEVS, NULL);
940	>	return NULL;
941	>	}
942	>	#endif
943	>
944	>	for(counter=0;counter<stats.dinfo->numdevs;counter++){
945	>	dev_ptr=&stats.dinfo->devices[dev_sel[counter].position];
946	>
947	>	/* Throw away devices that have done nothing, ever.. Eg "odd"
948	>	* devices.. like mem, proc.. and also doesn't report floppy
949	>	* drives etc unless they are doing stuff :)
950	>	*/
951	>	#ifdef FREEBSD5
952	>	if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue;
953	>	#else
954	>	if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue;
955	>	#endif
956	>
957	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
958	>	return NULL;
959	>	}
960	>	diskio_stats_ptr=diskio_stats+num_diskio;
961	>
962	>	#ifdef FREEBSD5
963	>	diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ];
964	>	diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE];
965	>	#else
966	>	diskio_stats_ptr->read_bytes=dev_ptr->bytes_read;
967	>	diskio_stats_ptr->write_bytes=dev_ptr->bytes_written;
968	>	#endif
969	>	if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name);
970	>	if (asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number) == -1) {
971	>	sg_set_error_with_errno(SG_ERROR_ASPRINTF, NULL);
972	>	return NULL;
973	>	}
974	>	diskio_stats_ptr->systime=time(NULL);
975	>
976	>	num_diskio++;
977	>	}
978	>	free(dev_sel);
979	>
980	>	#endif
981	>	#ifdef SOLARIS
982	>	if ((kc = kstat_open()) == NULL) {
983	>	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
984	>	return NULL;
985	>	}
986	>
987	>	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
988	>	if (!strcmp(ksp->ks_class, "disk")) {
989	>
990	>	if(ksp->ks_type != KSTAT_TYPE_IO) continue;
991	>	/* We dont want metadevices appearins as num_diskio */
992	>	if(strcmp(ksp->ks_module, "md")==0) continue;
993	>	if((kstat_read(kc, ksp, &kios))==-1){
994	>	}
995	>
996	>	if (VECTOR_RESIZE(diskio_stats, num_diskio + 1) < 0) {
997	>	kstat_close(kc);
998	>	return NULL;
999	>	}
1000	>	diskio_stats_ptr=diskio_stats+num_diskio;
1001	>
1002	>	diskio_stats_ptr->read_bytes=kios.nread;
1003	>	diskio_stats_ptr->write_bytes=kios.nwritten;
1004	>	if (sg_update_string(&diskio_stats_ptr->disk_name,
1005	>	sg_get_svr_from_bsd(ksp->ks_name)) < 0) {
1006	>	kstat_close(kc);
1007	>	return NULL;
1008	>	}
1009	>	diskio_stats_ptr->systime=time(NULL);
1010	>
1011	>	num_diskio++;
1012	>	}
1013	>	}
1014	>
1015	>	kstat_close(kc);
1016	>	#endif
1017	>
1018	>	#ifdef LINUX
1019	>	num_diskio = 0;
1020	>	n = 0;
1021	>
1022	>	/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels
1023	>	have statistics in here too, so we can use those directly.
1024	>	2.6 kernels have /proc/diskstats instead with almost (but not quite)
1025	>	the same format. */
1026	>
1027	>	f = fopen("/proc/diskstats", "r");
1028	>	format = " %d %d %99s %*d %*d %lld %*d %*d %*d %lld";
1029	>	if (f == NULL) {
1030	>	f = fopen("/proc/partitions", "r");
1031	>	format = " %d %d %*d %99s %*d %*d %lld %*d %*d %*d %lld";
1032	>	}
1033	>	if (f == NULL) goto out;
1034	>	now = time(NULL);
1035	>
1036	>	if (!re_compiled) {
1037	>	if (regcomp(&part_re, "^(.*/)?[^/]*[0-9]$", REG_EXTENDED | REG_NOSUB) != 0) {
1038	>	sg_set_error(SG_ERROR_PARSE, NULL);
1039	>	goto out;
1040	>	}
1041	>	if (regcomp(&not_part_re, "^(.*/)?[^/0-9]+[0-9]+d[0-9]+$", REG_EXTENDED | REG_NOSUB) != 0) {
1042	>	sg_set_error(SG_ERROR_PARSE, NULL);
1043	>	goto out;
1044	>	}
1045	>	re_compiled = 1;
1046	>	}
1047	>
1048	>	while ((line_ptr = sg_f_read_line(f, "")) != NULL) {
1049	>	char name[100];
1050	>	long long rsect, wsect;
1051	>
1052	>	int nr = sscanf(line_ptr, format,
1053	>	&major, &minor, name, &rsect, &wsect);
1054	>	if (nr < 3) continue;
1055	>
1056	>	/* Skip device names ending in numbers, since they're
1057	>	partitions, unless they match the c0d0 pattern that some
1058	>	RAID devices use. */
1059	>	/* FIXME: For 2.6+, we should probably be using sysfs to detect
1060	>	this... */
1061	>	if ((regexec(&part_re, name, 0, NULL, 0) == 0)
1062	>	&& (regexec(&not_part_re, name, 0, NULL, 0) != 0)) {
1063	>	continue;
1064	>	}
1065	>
1066	>	if (nr < 5) {
1067	>	has_pp_stats = 0;
1068	>	rsect = 0;
1069	>	wsect = 0;
1070	>	}
1071	>
1072	>	if (VECTOR_RESIZE(diskio_stats, n + 1) < 0) {
1073	>	goto out;
1074	>	}
1075	>	if (VECTOR_RESIZE(parts, n + 1) < 0) {
1076	>	goto out;
1077	>	}
1078	>
1079	>	if (sg_update_string(&diskio_stats[n].disk_name, name) < 0) {
1080	>	goto out;
1081	>	}
1082	>	diskio_stats[n].read_bytes = rsect * 512;
1083	>	diskio_stats[n].write_bytes = wsect * 512;
1084	>	diskio_stats[n].systime = now;
1085	>	parts[n].major = major;
1086	>	parts[n].minor = minor;
1087	>
1088	>	n++;
1089	>	}
1090	>
1091	>	fclose(f);
1092	>	f = NULL;
1093	>
1094	>	if (!has_pp_stats) {
1095	>	/* This is an older kernel where /proc/partitions doesn't
1096	>	contain stats. Read what we can from /proc/stat instead, and
1097	>	fill in the appropriate bits of the list allocated above. */
1098	>
1099	>	f = fopen("/proc/stat", "r");
1100	>	if (f == NULL) goto out;
1101	>	now = time(NULL);
1102	>
1103	>	line_ptr = sg_f_read_line(f, "disk_io:");
1104	>	if (line_ptr == NULL) goto out;
1105	>
1106	>	while((line_ptr=strchr(line_ptr, ' '))!=NULL){
1107	>	long long rsect, wsect;
1108	>
1109	>	if (*++line_ptr == '\0') break;
1110	>
1111	>	if((sscanf(line_ptr,
1112	>	"(%d,%d):(%*d, %*d, %lld, %*d, %lld)",
1113	>	&major, &minor, &rsect, &wsect)) != 4) {
1114	>	continue;
1115	>	}
1116	>
1117	>	/* Find the corresponding device from earlier.
1118	>	Just to add to the fun, "minor" is actually the disk
1119	>	number, not the device minor, so we need to figure
1120	>	out the real minor number based on the major!
1121	>	This list is not exhaustive; if you're running
1122	>	an older kernel you probably don't have fancy
1123	>	I2O hardware anyway... */
1124	>	switch (major) {
1125	>	case 3:
1126	>	case 21:
1127	>	case 22:
1128	>	case 33:
1129	>	case 34:
1130	>	case 36:
1131	>	case 56:
1132	>	case 57:
1133	>	case 88:
1134	>	case 89:
1135	>	case 90:
1136	>	case 91:
1137	>	minor *= 64;
1138	>	break;
1139	>	case 9:
1140	>	case 43:
1141	>	break;
1142	>	default:
1143	>	minor *= 16;
1144	>	break;
1145	>	}
1146	>	for (i = 0; i < n; i++) {
1147	>	if (major == parts[i].major
1148	>	&& minor == parts[i].minor)
1149	>	break;
1150	>	}
1151	>	if (i == n) continue;
1152	>
1153	>	/* We read the number of blocks. Blocks are stored in
1154	>	512 bytes */
1155	>	diskio_stats[i].read_bytes = rsect * 512;
1156	>	diskio_stats[i].write_bytes = wsect * 512;
1157	>	diskio_stats[i].systime = now;
1158	>	}
1159	>	}
1160	>
1161	>	num_diskio = n;
1162	>	out:
1163	>	if (f != NULL) fclose(f);
1164	>	#endif
1165	>
1166	>	#ifdef CYGWIN
1167	>	sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin");
1168		return NULL;
1169	+	#endif
1170	+
1171	+	#ifdef WIN32
1172	+	sg_set_error(SG_ERROR_NONE, NULL);
1173	+
1174	+	while((name = get_diskio(num_diskio, &rbytes, &wbytes)) != NULL) {
1175	+	if (VECTOR_RESIZE(diskio_stats, num_diskio+1)) {
1176	+	return NULL;
1177	+	}
1178	+
1179	+	diskio_stats_ptr = diskio_stats + num_diskio;
1180	+
1181	+	if (sg_update_string(&diskio_stats_ptr->disk_name, name) < 0) {
1182	+	return NULL;
1183	+	}
1184	+	sg_update_string(&name, NULL);
1185	+	diskio_stats_ptr->read_bytes = rbytes;
1186	+	diskio_stats_ptr->write_bytes = wbytes;
1187	+
1188	+	diskio_stats_ptr->systime = 0;
1189	+
1190	+	num_diskio++;
1191	+	}
1192	+	#endif
1193	+
1194	+	*entries=num_diskio;
1195	+
1196	+	return diskio_stats;
1197		}
1198	+
1199	+	sg_disk_io_stats *sg_get_disk_io_stats_diff(int *entries){
1200	+	#ifndef WIN32
1201	+	VECTOR_DECLARE_STATIC(diff, sg_disk_io_stats, 1,
1202	+	diskio_stat_init, diskio_stat_destroy);
1203	+	sg_disk_io_stats *src = NULL, *dest;
1204	+	int i, j, diff_count, new_count;
1205	+
1206	+	if (diskio_stats == NULL) {
1207	+	/* No previous stats, so we can't calculate a difference. */
1208	+	return sg_get_disk_io_stats(entries);
1209	+	}
1210	+
1211	+	/* Resize the results array to match the previous stats. */
1212	+	diff_count = VECTOR_SIZE(diskio_stats);
1213	+	if (VECTOR_RESIZE(diff, diff_count) < 0) {
1214	+	return NULL;
1215	+	}
1216	+
1217	+	/* Copy the previous stats into the result. */
1218	+	for (i = 0; i < diff_count; i++) {
1219	+	src = &diskio_stats[i];
1220	+	dest = &diff[i];
1221	+
1222	+	if (sg_update_string(&dest->disk_name, src->disk_name) < 0) {
1223	+	return NULL;
1224	+	}
1225	+	dest->read_bytes = src->read_bytes;
1226	+	dest->write_bytes = src->write_bytes;
1227	+	dest->systime = src->systime;
1228	+	}
1229	+
1230	+	/* Get a new set of stats. */
1231	+	if (sg_get_disk_io_stats(&new_count) == NULL) {
1232	+	return NULL;
1233	+	}
1234	+
1235	+	/* For each previous stat... */
1236	+	for (i = 0; i < diff_count; i++) {
1237	+	dest = &diff[i];
1238	+
1239	+	/* ... find the corresponding new stat ... */
1240	+	for (j = 0; j < new_count; j++) {
1241	+	/* Try the new stat in the same position first,
1242	+	since that's most likely to be it. */
1243	+	src = &diskio_stats[(i + j) % new_count];
1244	+	if (strcmp(src->disk_name, dest->disk_name) == 0) {
1245	+	break;
1246	+	}
1247	+	}
1248	+	if (j == new_count) {
1249	+	/* No match found. */
1250	+	continue;
1251	+	}
1252	+
1253	+	/* ... and subtract the previous stat from it to get the
1254	+	difference. */
1255	+	dest->read_bytes = src->read_bytes - dest->read_bytes;
1256	+	dest->write_bytes = src->write_bytes - dest->write_bytes;
1257	+	dest->systime = src->systime - dest->systime;
1258	+	}
1259	+
1260	+	*entries = diff_count;
1261	+	return diff;
1262	+	#else /* WIN32 */
1263	+	return sg_get_disk_io_stats(entries);
1264	+	#endif
1265	+	}
1266	+
1267	+	int sg_disk_io_compare_name(const void *va, const void *vb) {
1268	+	const sg_disk_io_stats *a = (const sg_disk_io_stats *)va;
1269	+	const sg_disk_io_stats *b = (const sg_disk_io_stats *)vb;
1270	+
1271	+	return strcmp(a->disk_name, b->disk_name);
1272	+	}
1273	+

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