1 |
/* |
2 |
* i-scream central monitoring system |
3 |
* http://www.i-scream.org |
4 |
* Copyright (C) 2000-2003 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. |
10 |
* |
11 |
* This program 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. |
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. |
19 |
*/ |
20 |
|
21 |
#ifdef HAVE_CONFIG_H |
22 |
#include "config.h" |
23 |
#endif |
24 |
|
25 |
#include <stdio.h> |
26 |
#include <stdlib.h> |
27 |
#include <string.h> |
28 |
#include "statgrab.h" |
29 |
|
30 |
#ifdef SOLARIS |
31 |
#include <sys/mnttab.h> |
32 |
#include <sys/statvfs.h> |
33 |
#include <kstat.h> |
34 |
#define VALID_FS_TYPES {"ufs", "tmpfs"} |
35 |
#endif |
36 |
|
37 |
#ifdef LINUX |
38 |
#include <sys/vfs.h> |
39 |
#include <mntent.h> |
40 |
#include "tools.h" |
41 |
#define VALID_FS_TYPES {"ext2", "ext3", "xfs", "reiserfs", "vfat", "tmpfs"} |
42 |
#endif |
43 |
|
44 |
#ifdef FREEBSD |
45 |
#include <sys/param.h> |
46 |
#include <sys/ucred.h> |
47 |
#include <sys/mount.h> |
48 |
#include <sys/dkstat.h> |
49 |
#include <devstat.h> |
50 |
#define VALID_FS_TYPES {"ufs", "mfs"} |
51 |
#endif |
52 |
#define START_VAL 1 |
53 |
|
54 |
char *copy_string(char *orig_ptr, const char *newtext){ |
55 |
|
56 |
/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */ |
57 |
orig_ptr=realloc(orig_ptr, (1+strlen(newtext))); |
58 |
if(orig_ptr==NULL){ |
59 |
return NULL; |
60 |
} |
61 |
strcpy(orig_ptr, newtext); |
62 |
|
63 |
return orig_ptr; |
64 |
} |
65 |
|
66 |
|
67 |
void init_disk_stat(int start, int end, disk_stat_t *disk_stats){ |
68 |
|
69 |
for(disk_stats+=start; start<=end; start++){ |
70 |
disk_stats->device_name=NULL; |
71 |
disk_stats->fs_type=NULL; |
72 |
disk_stats->mnt_point=NULL; |
73 |
|
74 |
disk_stats++; |
75 |
} |
76 |
} |
77 |
|
78 |
disk_stat_t *get_disk_stats(int *entries){ |
79 |
|
80 |
static disk_stat_t *disk_stats; |
81 |
static int watermark=-1; |
82 |
|
83 |
char *fs_types[] = VALID_FS_TYPES; |
84 |
int x, valid_type; |
85 |
int num_disks=0; |
86 |
#if defined(LINUX) || defined (SOLARIS) |
87 |
FILE *f; |
88 |
#endif |
89 |
|
90 |
disk_stat_t *disk_ptr; |
91 |
|
92 |
#ifdef SOLARIS |
93 |
struct mnttab mp; |
94 |
struct statvfs fs; |
95 |
#endif |
96 |
#ifdef LINUX |
97 |
struct mntent *mp; |
98 |
struct statfs fs; |
99 |
#endif |
100 |
#ifdef FREEBSD |
101 |
int nummnt; |
102 |
struct statfs *mp; |
103 |
#endif |
104 |
|
105 |
if(watermark==-1){ |
106 |
disk_stats=malloc(START_VAL * sizeof(disk_stat_t)); |
107 |
if(disk_stats==NULL){ |
108 |
return NULL; |
109 |
} |
110 |
watermark=START_VAL; |
111 |
init_disk_stat(0, watermark-1, disk_stats); |
112 |
} |
113 |
#ifdef FREEBSD |
114 |
nummnt=getmntinfo(&mp , MNT_LOCAL); |
115 |
if (nummnt<=0){ |
116 |
return NULL; |
117 |
} |
118 |
for(;nummnt--; mp++){ |
119 |
valid_type=0; |
120 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
121 |
if(strcmp(mp->f_fstypename, fs_types[x]) ==0){ |
122 |
valid_type=1; |
123 |
break; |
124 |
} |
125 |
} |
126 |
#endif |
127 |
|
128 |
#ifdef LINUX |
129 |
if ((f=setmntent("/etc/mtab", "r" ))==NULL){ |
130 |
return NULL; |
131 |
} |
132 |
|
133 |
while((mp=getmntent(f))){ |
134 |
if((statfs(mp->mnt_dir, &fs)) !=0){ |
135 |
continue; |
136 |
} |
137 |
|
138 |
valid_type=0; |
139 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
140 |
if(strcmp(mp->mnt_type, fs_types[x]) ==0){ |
141 |
valid_type=1; |
142 |
break; |
143 |
} |
144 |
} |
145 |
#endif |
146 |
|
147 |
#ifdef SOLARIS |
148 |
if ((f=fopen("/etc/mnttab", "r" ))==NULL){ |
149 |
return NULL; |
150 |
} |
151 |
while((getmntent(f, &mp)) == 0){ |
152 |
if ((statvfs(mp.mnt_mountp, &fs)) !=0){ |
153 |
continue; |
154 |
} |
155 |
valid_type=0; |
156 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
157 |
if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){ |
158 |
valid_type=1; |
159 |
break; |
160 |
} |
161 |
} |
162 |
#endif |
163 |
|
164 |
if(valid_type){ |
165 |
if(num_disks>watermark-1){ |
166 |
disk_ptr=disk_stats; |
167 |
if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){ |
168 |
disk_stats=disk_ptr; |
169 |
return NULL; |
170 |
} |
171 |
|
172 |
watermark=watermark*2; |
173 |
init_disk_stat(num_disks, watermark-1, disk_stats); |
174 |
} |
175 |
|
176 |
disk_ptr=disk_stats+num_disks; |
177 |
#ifdef FREEBSD |
178 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){ |
179 |
return NULL; |
180 |
} |
181 |
|
182 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){ |
183 |
return NULL; |
184 |
} |
185 |
|
186 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){ |
187 |
return NULL; |
188 |
} |
189 |
|
190 |
disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks; |
191 |
disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail; |
192 |
disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree); |
193 |
|
194 |
disk_ptr->total_inodes=(long long)mp->f_files; |
195 |
disk_ptr->free_inodes=(long long)mp->f_ffree; |
196 |
/* Freebsd doesn't have a "available" inodes */ |
197 |
disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes; |
198 |
#endif |
199 |
#ifdef LINUX |
200 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){ |
201 |
return NULL; |
202 |
} |
203 |
|
204 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){ |
205 |
return NULL; |
206 |
} |
207 |
|
208 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){ |
209 |
return NULL; |
210 |
} |
211 |
disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks; |
212 |
disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail; |
213 |
disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree); |
214 |
|
215 |
disk_ptr->total_inodes=(long long)fs.f_files; |
216 |
disk_ptr->free_inodes=(long long)fs.f_ffree; |
217 |
/* Linux doesn't have a "available" inodes */ |
218 |
disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes; |
219 |
#endif |
220 |
|
221 |
#ifdef SOLARIS |
222 |
/* Memory leak in event of realloc failing */ |
223 |
/* Maybe make this char[bigenough] and do strncpy's and put a null in the end? |
224 |
* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob |
225 |
* be upwards of a k each |
226 |
*/ |
227 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){ |
228 |
return NULL; |
229 |
} |
230 |
|
231 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){ |
232 |
return NULL; |
233 |
} |
234 |
|
235 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){ |
236 |
return NULL; |
237 |
} |
238 |
|
239 |
disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks; |
240 |
disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail; |
241 |
disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree); |
242 |
|
243 |
disk_ptr->total_inodes=(long long)fs.f_files; |
244 |
disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree; |
245 |
disk_ptr->free_inodes=(long long)fs.f_favail; |
246 |
#endif |
247 |
num_disks++; |
248 |
} |
249 |
} |
250 |
|
251 |
*entries=num_disks; |
252 |
|
253 |
/* If this fails, there is very little i can do about it, so i'll ignore it :) */ |
254 |
#if defined(LINUX) || defined(SOLARIS) |
255 |
fclose(f); |
256 |
#endif |
257 |
|
258 |
return disk_stats; |
259 |
|
260 |
} |
261 |
void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){ |
262 |
|
263 |
for(diskio_stats+=start; start<end; start++){ |
264 |
diskio_stats->disk_name=NULL; |
265 |
|
266 |
diskio_stats++; |
267 |
} |
268 |
} |
269 |
|
270 |
diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){ |
271 |
|
272 |
if(diskio_stats==NULL){ |
273 |
|
274 |
if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){ |
275 |
return NULL; |
276 |
} |
277 |
diskio_stat_init(0, needed_entries, diskio_stats); |
278 |
*cur_entries=needed_entries; |
279 |
|
280 |
return diskio_stats; |
281 |
} |
282 |
|
283 |
|
284 |
if(*cur_entries<needed_entries){ |
285 |
diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries)); |
286 |
if(diskio_stats==NULL){ |
287 |
return NULL; |
288 |
} |
289 |
diskio_stat_init(*cur_entries, needed_entries, diskio_stats); |
290 |
*cur_entries=needed_entries; |
291 |
} |
292 |
|
293 |
return diskio_stats; |
294 |
} |
295 |
|
296 |
static diskio_stat_t *diskio_stats=NULL; |
297 |
static int num_diskio=0; |
298 |
|
299 |
#ifdef LINUX |
300 |
typedef struct { |
301 |
int major; |
302 |
int minor; |
303 |
} partition; |
304 |
#endif |
305 |
|
306 |
diskio_stat_t *get_diskio_stats(int *entries){ |
307 |
|
308 |
static int sizeof_diskio_stats=0; |
309 |
diskio_stat_t *diskio_stats_ptr; |
310 |
|
311 |
#ifdef SOLARIS |
312 |
kstat_ctl_t *kc; |
313 |
kstat_t *ksp; |
314 |
kstat_io_t kios; |
315 |
#endif |
316 |
#ifdef LINUX |
317 |
FILE *f; |
318 |
char *line_ptr; |
319 |
int major, minor; |
320 |
char dev_letter; |
321 |
int has_pp_stats = 1; |
322 |
static partition *parts = NULL; |
323 |
static int alloc_parts = 0; |
324 |
int i, n; |
325 |
time_t now; |
326 |
#endif |
327 |
#ifdef FREEBSD |
328 |
static struct statinfo stats; |
329 |
static int stats_init = 0; |
330 |
int counter; |
331 |
struct device_selection *dev_sel = NULL; |
332 |
int n_selected, n_selections; |
333 |
long sel_gen; |
334 |
struct devstat *dev_ptr; |
335 |
#endif |
336 |
num_diskio=0; |
337 |
|
338 |
#ifdef FREEBSD |
339 |
if (!stats_init) { |
340 |
stats.dinfo=malloc(sizeof(struct devinfo)); |
341 |
bzero(stats.dinfo, sizeof(struct devinfo)); |
342 |
if(stats.dinfo==NULL) return NULL; |
343 |
stats_init = 1; |
344 |
} |
345 |
#ifdef FREEBSD5 |
346 |
if ((devstat_getdevs(NULL, &stats)) < 0) return NULL; |
347 |
/* Not aware of a get all devices, so i said 999. If we ever |
348 |
* find a machine with more than 999 disks, then i'll change |
349 |
* this number :) |
350 |
*/ |
351 |
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; |
352 |
#else |
353 |
if ((getdevs(&stats)) < 0) return NULL; |
354 |
/* Not aware of a get all devices, so i said 999. If we ever |
355 |
* find a machine with more than 999 disks, then i'll change |
356 |
* this number :) |
357 |
*/ |
358 |
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; |
359 |
#endif |
360 |
|
361 |
for(counter=0;counter<stats.dinfo->numdevs;counter++){ |
362 |
dev_ptr=&stats.dinfo->devices[dev_sel[counter].position]; |
363 |
|
364 |
/* Throw away devices that have done nothing, ever.. Eg "odd" |
365 |
* devices.. like mem, proc.. and also doesn't report floppy |
366 |
* drives etc unless they are doing stuff :) |
367 |
*/ |
368 |
#ifdef FREEBSD5 |
369 |
if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue; |
370 |
#else |
371 |
if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue; |
372 |
#endif |
373 |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
374 |
return NULL; |
375 |
} |
376 |
diskio_stats_ptr=diskio_stats+num_diskio; |
377 |
|
378 |
#ifdef FREEBSD5 |
379 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ]; |
380 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE]; |
381 |
#else |
382 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes_read; |
383 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes_written; |
384 |
#endif |
385 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
386 |
asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number); |
387 |
diskio_stats_ptr->systime=time(NULL); |
388 |
|
389 |
num_diskio++; |
390 |
} |
391 |
free(dev_sel); |
392 |
|
393 |
#endif |
394 |
#ifdef SOLARIS |
395 |
if ((kc = kstat_open()) == NULL) { |
396 |
return NULL; |
397 |
} |
398 |
|
399 |
for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) { |
400 |
if (!strcmp(ksp->ks_class, "disk")) { |
401 |
|
402 |
if(ksp->ks_type != KSTAT_TYPE_IO) continue; |
403 |
/* We dont want metadevices appearins as num_diskio */ |
404 |
if(strcmp(ksp->ks_module, "md")==0) continue; |
405 |
if((kstat_read(kc, ksp, &kios))==-1){ |
406 |
} |
407 |
|
408 |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
409 |
kstat_close(kc); |
410 |
return NULL; |
411 |
} |
412 |
diskio_stats_ptr=diskio_stats+num_diskio; |
413 |
|
414 |
diskio_stats_ptr->read_bytes=kios.nread; |
415 |
|
416 |
diskio_stats_ptr->write_bytes=kios.nwritten; |
417 |
|
418 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
419 |
|
420 |
diskio_stats_ptr->disk_name=strdup(ksp->ks_name); |
421 |
diskio_stats_ptr->systime=time(NULL); |
422 |
num_diskio++; |
423 |
} |
424 |
} |
425 |
|
426 |
kstat_close(kc); |
427 |
#endif |
428 |
|
429 |
#ifdef LINUX |
430 |
num_diskio = 0; |
431 |
n = 0; |
432 |
|
433 |
/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels |
434 |
have statistics in here too, so we can use those directly. */ |
435 |
|
436 |
f = fopen("/proc/partitions", "r"); |
437 |
if (f == NULL) goto out; |
438 |
now = time(NULL); |
439 |
|
440 |
while ((line_ptr = f_read_line(f, "")) != NULL) { |
441 |
char name[20]; |
442 |
char *s; |
443 |
long long rsect, wsect; |
444 |
|
445 |
int nr = sscanf(line_ptr, |
446 |
" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld", |
447 |
&major, &minor, name, &rsect, &wsect); |
448 |
if (nr < 3) continue; |
449 |
if (nr < 5) { |
450 |
has_pp_stats = 0; |
451 |
rsect = 0; |
452 |
wsect = 0; |
453 |
} |
454 |
|
455 |
/* Skip device names ending in numbers, since they're |
456 |
partitions. */ |
457 |
s = name; |
458 |
while (*s != '\0') s++; |
459 |
--s; |
460 |
if (*s >= '0' && *s <= '9') continue; |
461 |
|
462 |
diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats, |
463 |
diskio_stats); |
464 |
if (diskio_stats == NULL) goto out; |
465 |
if (n >= alloc_parts) { |
466 |
alloc_parts += 16; |
467 |
parts = realloc(parts, alloc_parts * sizeof *parts); |
468 |
if (parts == NULL) { |
469 |
alloc_parts = 0; |
470 |
goto out; |
471 |
} |
472 |
} |
473 |
|
474 |
if (diskio_stats[n].disk_name != NULL) |
475 |
free(diskio_stats[n].disk_name); |
476 |
diskio_stats[n].disk_name = strdup(name); |
477 |
diskio_stats[n].read_bytes = rsect * 512; |
478 |
diskio_stats[n].write_bytes = wsect * 512; |
479 |
diskio_stats[n].systime = now; |
480 |
parts[n].major = major; |
481 |
parts[n].minor = minor; |
482 |
|
483 |
n++; |
484 |
} |
485 |
|
486 |
if (!has_pp_stats) { |
487 |
/* This is an older kernel without stats in /proc/partitions. |
488 |
Read what we can from /proc/stat instead. */ |
489 |
|
490 |
f = fopen("/proc/stat", "r"); |
491 |
if (f == NULL) goto out; |
492 |
now = time(NULL); |
493 |
|
494 |
line_ptr = f_read_line(f, "disk_io:"); |
495 |
if (line_ptr == NULL) goto out; |
496 |
|
497 |
while((line_ptr=strchr(line_ptr, ' '))!=NULL){ |
498 |
long long rsect, wsect; |
499 |
|
500 |
if (*++line_ptr == '\0') break; |
501 |
|
502 |
if((sscanf(line_ptr, |
503 |
"(%d,%d):(%*d, %*d, %lld, %*d, %lld)", |
504 |
&major, &minor, &rsect, &wsect)) != 4) { |
505 |
continue; |
506 |
} |
507 |
|
508 |
/* Find the corresponding device from earlier. |
509 |
Just to add to the fun, "minor" is actually the disk |
510 |
number, not the device minor, so we need to figure |
511 |
out the real minor number based on the major! |
512 |
This list is not exhaustive; if you're running |
513 |
an older kernel you probably don't have fancy |
514 |
I2O hardware anyway... */ |
515 |
switch (major) { |
516 |
case 3: |
517 |
case 21: |
518 |
case 22: |
519 |
case 33: |
520 |
case 34: |
521 |
case 36: |
522 |
case 56: |
523 |
case 57: |
524 |
case 88: |
525 |
case 89: |
526 |
case 90: |
527 |
case 91: |
528 |
minor *= 64; |
529 |
break; |
530 |
case 9: |
531 |
case 43: |
532 |
break; |
533 |
default: |
534 |
minor *= 16; |
535 |
break; |
536 |
} |
537 |
for (i = 0; i < n; i++) { |
538 |
if (major == parts[i].major |
539 |
&& minor == parts[i].minor) |
540 |
break; |
541 |
} |
542 |
if (i == n) continue; |
543 |
|
544 |
/* We read the number of blocks. Blocks are stored in |
545 |
512 bytes */ |
546 |
diskio_stats[i].read_bytes = rsect * 512; |
547 |
diskio_stats[i].write_bytes = wsect * 512; |
548 |
diskio_stats[i].systime = now; |
549 |
} |
550 |
} |
551 |
|
552 |
num_diskio = n; |
553 |
out: |
554 |
if (f != NULL) fclose(f); |
555 |
|
556 |
#endif |
557 |
*entries=num_diskio; |
558 |
|
559 |
return diskio_stats; |
560 |
} |
561 |
|
562 |
diskio_stat_t *get_diskio_stats_diff(int *entries){ |
563 |
static diskio_stat_t *diskio_stats_diff=NULL; |
564 |
static int sizeof_diskio_stats_diff=0; |
565 |
diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr; |
566 |
int disks, x, y; |
567 |
|
568 |
if(diskio_stats==NULL){ |
569 |
diskio_stats_ptr=get_diskio_stats(&disks); |
570 |
*entries=disks; |
571 |
return diskio_stats_ptr; |
572 |
} |
573 |
|
574 |
diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff); |
575 |
if(diskio_stats_diff==NULL){ |
576 |
return NULL; |
577 |
} |
578 |
|
579 |
diskio_stats_diff_ptr=diskio_stats_diff; |
580 |
diskio_stats_ptr=diskio_stats; |
581 |
|
582 |
for(disks=0;disks<num_diskio;disks++){ |
583 |
if(diskio_stats_diff_ptr->disk_name!=NULL){ |
584 |
free(diskio_stats_diff_ptr->disk_name); |
585 |
} |
586 |
diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name); |
587 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes; |
588 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes; |
589 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime; |
590 |
|
591 |
diskio_stats_diff_ptr++; |
592 |
diskio_stats_ptr++; |
593 |
} |
594 |
|
595 |
diskio_stats_ptr=get_diskio_stats(&disks); |
596 |
diskio_stats_diff_ptr=diskio_stats_diff; |
597 |
|
598 |
for(x=0;x<sizeof_diskio_stats_diff;x++){ |
599 |
|
600 |
if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){ |
601 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes; |
602 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes; |
603 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime; |
604 |
}else{ |
605 |
diskio_stats_ptr=diskio_stats; |
606 |
for(y=0;y<disks;y++){ |
607 |
if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){ |
608 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes; |
609 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes; |
610 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime; |
611 |
|
612 |
break; |
613 |
} |
614 |
|
615 |
diskio_stats_ptr++; |
616 |
} |
617 |
} |
618 |
|
619 |
diskio_stats_ptr++; |
620 |
diskio_stats_diff_ptr++; |
621 |
|
622 |
} |
623 |
|
624 |
*entries=sizeof_diskio_stats_diff; |
625 |
return diskio_stats_diff; |
626 |
} |