1 |
/* |
2 |
* i-scream central monitoring system |
3 |
* http://www.i-scream.org |
4 |
* Copyright (C) 2000-2003 i-scream |
5 |
* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
10 |
* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
15 |
* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* 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 <time.h> |
39 |
#include <sys/vfs.h> |
40 |
#include <mntent.h> |
41 |
#include "tools.h" |
42 |
#define VALID_FS_TYPES {"adfs", "affs", "befs", "bfs", "efs", "ext2", \ |
43 |
"ext3", "vxfs", "hfs", "hfsplus", "hpfs", "jffs", \ |
44 |
"jffs2", "minix", "msdos", "ntfs", "qnx4", "ramfs", \ |
45 |
"rootfs", "reiserfs", "sysv", "v7", "udf", "ufs", \ |
46 |
"umsdos", "vfat", "xfs", "jfs"} |
47 |
#endif |
48 |
|
49 |
#ifdef ALLBSD |
50 |
#include <sys/param.h> |
51 |
#include <sys/ucred.h> |
52 |
#include <sys/mount.h> |
53 |
#define VALID_FS_TYPES {"ufs", "mfs", "ffs"} |
54 |
#endif |
55 |
#ifdef FREEBSD |
56 |
#include <sys/dkstat.h> |
57 |
#include <devstat.h> |
58 |
#endif |
59 |
#ifdef NETBSD |
60 |
#include <sys/param.h> |
61 |
#include <sys/sysctl.h> |
62 |
#include <sys/disk.h> |
63 |
#endif |
64 |
|
65 |
#define START_VAL 1 |
66 |
|
67 |
char *copy_string(char *orig_ptr, const char *newtext){ |
68 |
|
69 |
/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */ |
70 |
orig_ptr=realloc(orig_ptr, (1+strlen(newtext))); |
71 |
if(orig_ptr==NULL){ |
72 |
return NULL; |
73 |
} |
74 |
strcpy(orig_ptr, newtext); |
75 |
|
76 |
return orig_ptr; |
77 |
} |
78 |
|
79 |
|
80 |
void init_disk_stat(int start, int end, disk_stat_t *disk_stats){ |
81 |
|
82 |
for(disk_stats+=start; start<=end; start++){ |
83 |
disk_stats->device_name=NULL; |
84 |
disk_stats->fs_type=NULL; |
85 |
disk_stats->mnt_point=NULL; |
86 |
|
87 |
disk_stats++; |
88 |
} |
89 |
} |
90 |
|
91 |
disk_stat_t *get_disk_stats(int *entries){ |
92 |
|
93 |
static disk_stat_t *disk_stats; |
94 |
static int watermark=-1; |
95 |
|
96 |
char *fs_types[] = VALID_FS_TYPES; |
97 |
int x, valid_type; |
98 |
int num_disks=0; |
99 |
#if defined(LINUX) || defined (SOLARIS) |
100 |
FILE *f; |
101 |
#endif |
102 |
|
103 |
disk_stat_t *disk_ptr; |
104 |
|
105 |
#ifdef SOLARIS |
106 |
struct mnttab mp; |
107 |
struct statvfs fs; |
108 |
#endif |
109 |
#ifdef LINUX |
110 |
struct mntent *mp; |
111 |
struct statfs fs; |
112 |
#endif |
113 |
#ifdef ALLBSD |
114 |
int nummnt; |
115 |
struct statfs *mp; |
116 |
#endif |
117 |
|
118 |
if(watermark==-1){ |
119 |
disk_stats=malloc(START_VAL * sizeof(disk_stat_t)); |
120 |
if(disk_stats==NULL){ |
121 |
return NULL; |
122 |
} |
123 |
watermark=START_VAL; |
124 |
init_disk_stat(0, watermark-1, disk_stats); |
125 |
} |
126 |
#ifdef ALLBSD |
127 |
nummnt=getmntinfo(&mp , MNT_LOCAL); |
128 |
if (nummnt<=0){ |
129 |
return NULL; |
130 |
} |
131 |
for(;nummnt--; mp++){ |
132 |
valid_type=0; |
133 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
134 |
if(strcmp(mp->f_fstypename, fs_types[x]) ==0){ |
135 |
valid_type=1; |
136 |
break; |
137 |
} |
138 |
} |
139 |
#endif |
140 |
|
141 |
#ifdef LINUX |
142 |
if ((f=setmntent("/etc/mtab", "r" ))==NULL){ |
143 |
return NULL; |
144 |
} |
145 |
|
146 |
while((mp=getmntent(f))){ |
147 |
if((statfs(mp->mnt_dir, &fs)) !=0){ |
148 |
continue; |
149 |
} |
150 |
|
151 |
valid_type=0; |
152 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
153 |
if(strcmp(mp->mnt_type, fs_types[x]) ==0){ |
154 |
valid_type=1; |
155 |
break; |
156 |
} |
157 |
} |
158 |
#endif |
159 |
|
160 |
#ifdef SOLARIS |
161 |
if ((f=fopen("/etc/mnttab", "r" ))==NULL){ |
162 |
return NULL; |
163 |
} |
164 |
while((getmntent(f, &mp)) == 0){ |
165 |
if ((statvfs(mp.mnt_mountp, &fs)) !=0){ |
166 |
continue; |
167 |
} |
168 |
valid_type=0; |
169 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
170 |
if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){ |
171 |
valid_type=1; |
172 |
break; |
173 |
} |
174 |
} |
175 |
#endif |
176 |
|
177 |
if(valid_type){ |
178 |
if(num_disks>watermark-1){ |
179 |
disk_ptr=disk_stats; |
180 |
if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){ |
181 |
disk_stats=disk_ptr; |
182 |
return NULL; |
183 |
} |
184 |
|
185 |
watermark=watermark*2; |
186 |
init_disk_stat(num_disks, watermark-1, disk_stats); |
187 |
} |
188 |
|
189 |
disk_ptr=disk_stats+num_disks; |
190 |
#ifdef ALLBSD |
191 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){ |
192 |
return NULL; |
193 |
} |
194 |
|
195 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){ |
196 |
return NULL; |
197 |
} |
198 |
|
199 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){ |
200 |
return NULL; |
201 |
} |
202 |
|
203 |
disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks; |
204 |
disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail; |
205 |
disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree); |
206 |
|
207 |
disk_ptr->total_inodes=(long long)mp->f_files; |
208 |
disk_ptr->free_inodes=(long long)mp->f_ffree; |
209 |
/* Freebsd doesn't have a "available" inodes */ |
210 |
disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes; |
211 |
#endif |
212 |
#ifdef LINUX |
213 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){ |
214 |
return NULL; |
215 |
} |
216 |
|
217 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){ |
218 |
return NULL; |
219 |
} |
220 |
|
221 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){ |
222 |
return NULL; |
223 |
} |
224 |
disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks; |
225 |
disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail; |
226 |
disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree); |
227 |
|
228 |
disk_ptr->total_inodes=(long long)fs.f_files; |
229 |
disk_ptr->free_inodes=(long long)fs.f_ffree; |
230 |
/* Linux doesn't have a "available" inodes */ |
231 |
disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes; |
232 |
#endif |
233 |
|
234 |
#ifdef SOLARIS |
235 |
/* Memory leak in event of realloc failing */ |
236 |
/* Maybe make this char[bigenough] and do strncpy's and put a null in the end? |
237 |
* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob |
238 |
* be upwards of a k each |
239 |
*/ |
240 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){ |
241 |
return NULL; |
242 |
} |
243 |
|
244 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){ |
245 |
return NULL; |
246 |
} |
247 |
|
248 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){ |
249 |
return NULL; |
250 |
} |
251 |
|
252 |
disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks; |
253 |
disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail; |
254 |
disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree); |
255 |
|
256 |
disk_ptr->total_inodes=(long long)fs.f_files; |
257 |
disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree; |
258 |
disk_ptr->free_inodes=(long long)fs.f_favail; |
259 |
#endif |
260 |
num_disks++; |
261 |
} |
262 |
} |
263 |
|
264 |
*entries=num_disks; |
265 |
|
266 |
/* If this fails, there is very little i can do about it, so i'll ignore it :) */ |
267 |
#if defined(LINUX) || defined(SOLARIS) |
268 |
fclose(f); |
269 |
#endif |
270 |
|
271 |
return disk_stats; |
272 |
|
273 |
} |
274 |
void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){ |
275 |
|
276 |
for(diskio_stats+=start; start<end; start++){ |
277 |
diskio_stats->disk_name=NULL; |
278 |
|
279 |
diskio_stats++; |
280 |
} |
281 |
} |
282 |
|
283 |
diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){ |
284 |
|
285 |
if(diskio_stats==NULL){ |
286 |
|
287 |
if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){ |
288 |
return NULL; |
289 |
} |
290 |
diskio_stat_init(0, needed_entries, diskio_stats); |
291 |
*cur_entries=needed_entries; |
292 |
|
293 |
return diskio_stats; |
294 |
} |
295 |
|
296 |
|
297 |
if(*cur_entries<needed_entries){ |
298 |
diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries)); |
299 |
if(diskio_stats==NULL){ |
300 |
return NULL; |
301 |
} |
302 |
diskio_stat_init(*cur_entries, needed_entries, diskio_stats); |
303 |
*cur_entries=needed_entries; |
304 |
} |
305 |
|
306 |
return diskio_stats; |
307 |
} |
308 |
|
309 |
static diskio_stat_t *diskio_stats=NULL; |
310 |
static int num_diskio=0; |
311 |
|
312 |
#ifdef LINUX |
313 |
typedef struct { |
314 |
int major; |
315 |
int minor; |
316 |
} partition; |
317 |
#endif |
318 |
|
319 |
diskio_stat_t *get_diskio_stats(int *entries){ |
320 |
|
321 |
static int sizeof_diskio_stats=0; |
322 |
diskio_stat_t *diskio_stats_ptr; |
323 |
|
324 |
#ifdef SOLARIS |
325 |
kstat_ctl_t *kc; |
326 |
kstat_t *ksp; |
327 |
kstat_io_t kios; |
328 |
#endif |
329 |
#ifdef LINUX |
330 |
FILE *f; |
331 |
char *line_ptr; |
332 |
int major, minor; |
333 |
char dev_letter; |
334 |
int has_pp_stats = 1; |
335 |
static partition *parts = NULL; |
336 |
static int alloc_parts = 0; |
337 |
int i, n; |
338 |
time_t now; |
339 |
#endif |
340 |
#ifdef FREEBSD |
341 |
static struct statinfo stats; |
342 |
static int stats_init = 0; |
343 |
int counter; |
344 |
struct device_selection *dev_sel = NULL; |
345 |
int n_selected, n_selections; |
346 |
long sel_gen; |
347 |
struct devstat *dev_ptr; |
348 |
#endif |
349 |
#ifdef NETBSD |
350 |
struct disk_sysctl *stats; |
351 |
int num_disks, i; |
352 |
int mib[3]; |
353 |
size_t size; |
354 |
#endif |
355 |
|
356 |
num_diskio=0; |
357 |
|
358 |
#ifdef NETBSD |
359 |
mib[0] = CTL_HW; |
360 |
mib[1] = HW_DISKSTATS; |
361 |
mib[2] = sizeof(struct disk_sysctl); |
362 |
|
363 |
if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) { |
364 |
return NULL; |
365 |
} |
366 |
num_disks = size / sizeof(struct disk_sysctl); |
367 |
|
368 |
stats = malloc(size); |
369 |
if (stats == NULL) { |
370 |
return NULL; |
371 |
} |
372 |
|
373 |
if (sysctl(mib, 3, stats, &size, NULL, 0) < 0) { |
374 |
return NULL; |
375 |
} |
376 |
|
377 |
for (i = 0; i < num_disks; i++) { |
378 |
u_int64_t rbytes, wbytes; |
379 |
|
380 |
#ifdef HAVE_DK_RBYTES |
381 |
rbytes = stats[i].dk_rbytes; |
382 |
wbytes = stats[i].dk_wbytes; |
383 |
#else |
384 |
/* Before 1.6.1, NetBSD merged reads and writes. */ |
385 |
rbytes = wbytes = stats[i].dk_bytes; |
386 |
#endif |
387 |
|
388 |
/* Don't keep stats for disks that have never been used. */ |
389 |
if (rbytes == 0 && wbytes == 0) { |
390 |
continue; |
391 |
} |
392 |
|
393 |
diskio_stats = diskio_stat_malloc(num_diskio + 1, |
394 |
&sizeof_diskio_stats, |
395 |
diskio_stats); |
396 |
if (diskio_stats == NULL) { |
397 |
return NULL; |
398 |
} |
399 |
diskio_stats_ptr = diskio_stats + num_diskio; |
400 |
|
401 |
diskio_stats_ptr->read_bytes = rbytes; |
402 |
diskio_stats_ptr->write_bytes = wbytes; |
403 |
if (diskio_stats_ptr->disk_name != NULL) { |
404 |
free(diskio_stats_ptr->disk_name); |
405 |
} |
406 |
diskio_stats_ptr->disk_name = strdup(stats[i].dk_name); |
407 |
diskio_stats_ptr->systime = time(NULL); |
408 |
|
409 |
num_diskio++; |
410 |
} |
411 |
|
412 |
free(stats); |
413 |
#endif |
414 |
|
415 |
#ifdef FREEBSD |
416 |
if (!stats_init) { |
417 |
stats.dinfo=malloc(sizeof(struct devinfo)); |
418 |
if(stats.dinfo==NULL) return NULL; |
419 |
bzero(stats.dinfo, sizeof(struct devinfo)); |
420 |
stats_init = 1; |
421 |
} |
422 |
#ifdef FREEBSD5 |
423 |
if ((devstat_getdevs(NULL, &stats)) < 0) return NULL; |
424 |
/* Not aware of a get all devices, so i said 999. If we ever |
425 |
* find a machine with more than 999 disks, then i'll change |
426 |
* this number :) |
427 |
*/ |
428 |
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; |
429 |
#else |
430 |
if ((getdevs(&stats)) < 0) return NULL; |
431 |
/* Not aware of a get all devices, so i said 999. If we ever |
432 |
* find a machine with more than 999 disks, then i'll change |
433 |
* this number :) |
434 |
*/ |
435 |
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; |
436 |
#endif |
437 |
|
438 |
for(counter=0;counter<stats.dinfo->numdevs;counter++){ |
439 |
dev_ptr=&stats.dinfo->devices[dev_sel[counter].position]; |
440 |
|
441 |
/* Throw away devices that have done nothing, ever.. Eg "odd" |
442 |
* devices.. like mem, proc.. and also doesn't report floppy |
443 |
* drives etc unless they are doing stuff :) |
444 |
*/ |
445 |
#ifdef FREEBSD5 |
446 |
if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue; |
447 |
#else |
448 |
if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue; |
449 |
#endif |
450 |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
451 |
return NULL; |
452 |
} |
453 |
diskio_stats_ptr=diskio_stats+num_diskio; |
454 |
|
455 |
#ifdef FREEBSD5 |
456 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ]; |
457 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE]; |
458 |
#else |
459 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes_read; |
460 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes_written; |
461 |
#endif |
462 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
463 |
asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number); |
464 |
diskio_stats_ptr->systime=time(NULL); |
465 |
|
466 |
num_diskio++; |
467 |
} |
468 |
free(dev_sel); |
469 |
|
470 |
#endif |
471 |
#ifdef SOLARIS |
472 |
if ((kc = kstat_open()) == NULL) { |
473 |
return NULL; |
474 |
} |
475 |
|
476 |
for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) { |
477 |
if (!strcmp(ksp->ks_class, "disk")) { |
478 |
|
479 |
if(ksp->ks_type != KSTAT_TYPE_IO) continue; |
480 |
/* We dont want metadevices appearins as num_diskio */ |
481 |
if(strcmp(ksp->ks_module, "md")==0) continue; |
482 |
if((kstat_read(kc, ksp, &kios))==-1){ |
483 |
} |
484 |
|
485 |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
486 |
kstat_close(kc); |
487 |
return NULL; |
488 |
} |
489 |
diskio_stats_ptr=diskio_stats+num_diskio; |
490 |
|
491 |
diskio_stats_ptr->read_bytes=kios.nread; |
492 |
|
493 |
diskio_stats_ptr->write_bytes=kios.nwritten; |
494 |
|
495 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
496 |
|
497 |
diskio_stats_ptr->disk_name=strdup(ksp->ks_name); |
498 |
diskio_stats_ptr->systime=time(NULL); |
499 |
num_diskio++; |
500 |
} |
501 |
} |
502 |
|
503 |
kstat_close(kc); |
504 |
#endif |
505 |
|
506 |
#ifdef LINUX |
507 |
num_diskio = 0; |
508 |
n = 0; |
509 |
|
510 |
/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels |
511 |
have statistics in here too, so we can use those directly. */ |
512 |
|
513 |
f = fopen("/proc/partitions", "r"); |
514 |
if (f == NULL) goto out; |
515 |
now = time(NULL); |
516 |
|
517 |
while ((line_ptr = f_read_line(f, "")) != NULL) { |
518 |
char name[20]; |
519 |
char *s; |
520 |
long long rsect, wsect; |
521 |
|
522 |
int nr = sscanf(line_ptr, |
523 |
" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld", |
524 |
&major, &minor, name, &rsect, &wsect); |
525 |
if (nr < 3) continue; |
526 |
if (nr < 5) { |
527 |
has_pp_stats = 0; |
528 |
rsect = 0; |
529 |
wsect = 0; |
530 |
} |
531 |
|
532 |
/* Skip device names ending in numbers, since they're |
533 |
partitions. */ |
534 |
s = name; |
535 |
while (*s != '\0') s++; |
536 |
--s; |
537 |
if (*s >= '0' && *s <= '9') continue; |
538 |
|
539 |
diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats, |
540 |
diskio_stats); |
541 |
if (diskio_stats == NULL) goto out; |
542 |
if (n >= alloc_parts) { |
543 |
alloc_parts += 16; |
544 |
parts = realloc(parts, alloc_parts * sizeof *parts); |
545 |
if (parts == NULL) { |
546 |
alloc_parts = 0; |
547 |
goto out; |
548 |
} |
549 |
} |
550 |
|
551 |
if (diskio_stats[n].disk_name != NULL) |
552 |
free(diskio_stats[n].disk_name); |
553 |
diskio_stats[n].disk_name = strdup(name); |
554 |
diskio_stats[n].read_bytes = rsect * 512; |
555 |
diskio_stats[n].write_bytes = wsect * 512; |
556 |
diskio_stats[n].systime = now; |
557 |
parts[n].major = major; |
558 |
parts[n].minor = minor; |
559 |
|
560 |
n++; |
561 |
} |
562 |
|
563 |
if (!has_pp_stats) { |
564 |
/* This is an older kernel without stats in /proc/partitions. |
565 |
Read what we can from /proc/stat instead. */ |
566 |
|
567 |
f = fopen("/proc/stat", "r"); |
568 |
if (f == NULL) goto out; |
569 |
now = time(NULL); |
570 |
|
571 |
line_ptr = f_read_line(f, "disk_io:"); |
572 |
if (line_ptr == NULL) goto out; |
573 |
|
574 |
while((line_ptr=strchr(line_ptr, ' '))!=NULL){ |
575 |
long long rsect, wsect; |
576 |
|
577 |
if (*++line_ptr == '\0') break; |
578 |
|
579 |
if((sscanf(line_ptr, |
580 |
"(%d,%d):(%*d, %*d, %lld, %*d, %lld)", |
581 |
&major, &minor, &rsect, &wsect)) != 4) { |
582 |
continue; |
583 |
} |
584 |
|
585 |
/* Find the corresponding device from earlier. |
586 |
Just to add to the fun, "minor" is actually the disk |
587 |
number, not the device minor, so we need to figure |
588 |
out the real minor number based on the major! |
589 |
This list is not exhaustive; if you're running |
590 |
an older kernel you probably don't have fancy |
591 |
I2O hardware anyway... */ |
592 |
switch (major) { |
593 |
case 3: |
594 |
case 21: |
595 |
case 22: |
596 |
case 33: |
597 |
case 34: |
598 |
case 36: |
599 |
case 56: |
600 |
case 57: |
601 |
case 88: |
602 |
case 89: |
603 |
case 90: |
604 |
case 91: |
605 |
minor *= 64; |
606 |
break; |
607 |
case 9: |
608 |
case 43: |
609 |
break; |
610 |
default: |
611 |
minor *= 16; |
612 |
break; |
613 |
} |
614 |
for (i = 0; i < n; i++) { |
615 |
if (major == parts[i].major |
616 |
&& minor == parts[i].minor) |
617 |
break; |
618 |
} |
619 |
if (i == n) continue; |
620 |
|
621 |
/* We read the number of blocks. Blocks are stored in |
622 |
512 bytes */ |
623 |
diskio_stats[i].read_bytes = rsect * 512; |
624 |
diskio_stats[i].write_bytes = wsect * 512; |
625 |
diskio_stats[i].systime = now; |
626 |
} |
627 |
} |
628 |
|
629 |
num_diskio = n; |
630 |
out: |
631 |
if (f != NULL) fclose(f); |
632 |
|
633 |
#endif |
634 |
*entries=num_diskio; |
635 |
|
636 |
return diskio_stats; |
637 |
} |
638 |
|
639 |
diskio_stat_t *get_diskio_stats_diff(int *entries){ |
640 |
static diskio_stat_t *diskio_stats_diff=NULL; |
641 |
static int sizeof_diskio_stats_diff=0; |
642 |
diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr; |
643 |
int disks, x, y; |
644 |
|
645 |
if(diskio_stats==NULL){ |
646 |
diskio_stats_ptr=get_diskio_stats(&disks); |
647 |
*entries=disks; |
648 |
return diskio_stats_ptr; |
649 |
} |
650 |
|
651 |
diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff); |
652 |
if(diskio_stats_diff==NULL){ |
653 |
return NULL; |
654 |
} |
655 |
|
656 |
diskio_stats_diff_ptr=diskio_stats_diff; |
657 |
diskio_stats_ptr=diskio_stats; |
658 |
|
659 |
for(disks=0;disks<num_diskio;disks++){ |
660 |
if(diskio_stats_diff_ptr->disk_name!=NULL){ |
661 |
free(diskio_stats_diff_ptr->disk_name); |
662 |
} |
663 |
diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name); |
664 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes; |
665 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes; |
666 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime; |
667 |
|
668 |
diskio_stats_diff_ptr++; |
669 |
diskio_stats_ptr++; |
670 |
} |
671 |
|
672 |
diskio_stats_ptr=get_diskio_stats(&disks); |
673 |
diskio_stats_diff_ptr=diskio_stats_diff; |
674 |
|
675 |
for(x=0;x<sizeof_diskio_stats_diff;x++){ |
676 |
|
677 |
if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){ |
678 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes; |
679 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes; |
680 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime; |
681 |
}else{ |
682 |
diskio_stats_ptr=diskio_stats; |
683 |
for(y=0;y<disks;y++){ |
684 |
if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){ |
685 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes; |
686 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes; |
687 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime; |
688 |
|
689 |
break; |
690 |
} |
691 |
|
692 |
diskio_stats_ptr++; |
693 |
} |
694 |
} |
695 |
|
696 |
diskio_stats_ptr++; |
697 |
diskio_stats_diff_ptr++; |
698 |
|
699 |
} |
700 |
|
701 |
*entries=sizeof_diskio_stats_diff; |
702 |
return diskio_stats_diff; |
703 |
} |