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 |
diskio_stat_t *get_diskio_stats(int *entries){ |
300 |
|
301 |
static int sizeof_diskio_stats=0; |
302 |
diskio_stat_t *diskio_stats_ptr; |
303 |
|
304 |
#ifdef SOLARIS |
305 |
kstat_ctl_t *kc; |
306 |
kstat_t *ksp; |
307 |
kstat_io_t kios; |
308 |
#endif |
309 |
#ifdef LINUX |
310 |
FILE *f; |
311 |
char *line_ptr; |
312 |
int major, minor; |
313 |
char dev_letter; |
314 |
#endif |
315 |
#ifdef FREEBSD |
316 |
struct statinfo stats; |
317 |
int counter; |
318 |
struct device_selection *dev_sel = NULL; |
319 |
int n_selected, n_selections; |
320 |
long sel_gen; |
321 |
struct devstat *dev_ptr; |
322 |
#endif |
323 |
num_diskio=0; |
324 |
|
325 |
#ifdef FREEBSD |
326 |
stats.dinfo=malloc(sizeof(struct devinfo)); |
327 |
if(stats.dinfo==NULL) return NULL; |
328 |
if ((getdevs(&stats)) < 0) return NULL; |
329 |
/* Not aware of a get all devices, so i said 999. If we ever |
330 |
* find a machine with more than 999 disks, then i'll change |
331 |
* this number :) |
332 |
*/ |
333 |
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; |
334 |
|
335 |
for(counter=0;counter<stats.dinfo->numdevs;counter++){ |
336 |
dev_ptr=&stats.dinfo->devices[dev_sel[counter].position]; |
337 |
|
338 |
/* Throw away devices that have done nothing, ever.. Eg "odd" |
339 |
* devices.. like mem, proc.. and also doesn't report floppy |
340 |
* drives etc unless they are doing stuff :) |
341 |
*/ |
342 |
if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue; |
343 |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
344 |
return NULL; |
345 |
} |
346 |
diskio_stats_ptr=diskio_stats+num_diskio; |
347 |
|
348 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes_read; |
349 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes_written; |
350 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
351 |
asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number); |
352 |
diskio_stats_ptr->systime=time(NULL); |
353 |
|
354 |
num_diskio++; |
355 |
} |
356 |
free(dev_sel); |
357 |
free(stats.dinfo); |
358 |
|
359 |
#endif |
360 |
#ifdef SOLARIS |
361 |
if ((kc = kstat_open()) == NULL) { |
362 |
return NULL; |
363 |
} |
364 |
|
365 |
for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) { |
366 |
if (!strcmp(ksp->ks_class, "disk")) { |
367 |
|
368 |
if(ksp->ks_type != KSTAT_TYPE_IO) continue; |
369 |
/* We dont want metadevices appearins as num_diskio */ |
370 |
if(strcmp(ksp->ks_module, "md")==0) continue; |
371 |
if((kstat_read(kc, ksp, &kios))==-1){ |
372 |
} |
373 |
|
374 |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
375 |
kstat_close(kc); |
376 |
return NULL; |
377 |
} |
378 |
diskio_stats_ptr=diskio_stats+num_diskio; |
379 |
|
380 |
diskio_stats_ptr->read_bytes=kios.nread; |
381 |
|
382 |
diskio_stats_ptr->write_bytes=kios.nwritten; |
383 |
|
384 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
385 |
|
386 |
diskio_stats_ptr->disk_name=strdup(ksp->ks_name); |
387 |
diskio_stats_ptr->systime=time(NULL); |
388 |
num_diskio++; |
389 |
} |
390 |
} |
391 |
|
392 |
kstat_close(kc); |
393 |
#endif |
394 |
|
395 |
#ifdef LINUX |
396 |
f=fopen("/proc/stat", "r"); |
397 |
if(f==NULL){ |
398 |
*entries=0; |
399 |
return NULL; |
400 |
} |
401 |
if((line_ptr=f_read_line(f, "disk_io:"))==NULL){ |
402 |
*entries=0; |
403 |
fclose(f); |
404 |
return NULL; |
405 |
} |
406 |
while((line_ptr=strchr(line_ptr, ' '))!=NULL){ |
407 |
line_ptr++; |
408 |
if(*line_ptr=='\0'){ |
409 |
break; |
410 |
} |
411 |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
412 |
fclose(f); |
413 |
*entries=0; |
414 |
return NULL; |
415 |
} |
416 |
diskio_stats_ptr=diskio_stats+num_diskio; |
417 |
|
418 |
|
419 |
if((sscanf(line_ptr, "(%d,%d):(%*d, %*d, %lld, %*d, %lld)", \ |
420 |
&major, \ |
421 |
&minor, \ |
422 |
&diskio_stats_ptr->read_bytes, \ |
423 |
&diskio_stats_ptr->write_bytes))!=4) { |
424 |
continue; |
425 |
} |
426 |
|
427 |
/* We read the number of blocks. Blocks are stored in 512 bytes */ |
428 |
diskio_stats_ptr->read_bytes=diskio_stats_ptr->read_bytes*512; |
429 |
diskio_stats_ptr->write_bytes=diskio_stats_ptr->write_bytes*512; |
430 |
|
431 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
432 |
|
433 |
switch(major){ |
434 |
case 2: |
435 |
if(minor==0){ |
436 |
diskio_stats_ptr->disk_name=strdup("fd0"); |
437 |
} |
438 |
break; |
439 |
|
440 |
case 3: |
441 |
if(minor==0){ |
442 |
diskio_stats_ptr->disk_name=strdup("hda"); |
443 |
}else{ |
444 |
diskio_stats_ptr->disk_name=strdup("hdb"); |
445 |
} |
446 |
break; |
447 |
|
448 |
case 22: |
449 |
if(minor==0){ |
450 |
diskio_stats_ptr->disk_name=strdup("hdc"); |
451 |
}else{ |
452 |
diskio_stats_ptr->disk_name=strdup("hdd"); |
453 |
} |
454 |
break; |
455 |
case 8: |
456 |
dev_letter='a'+(minor/16); |
457 |
diskio_stats_ptr->disk_name=malloc(4); |
458 |
snprintf(diskio_stats_ptr->disk_name, 4, "sd%c", dev_letter); |
459 |
break; |
460 |
default: |
461 |
/* I have no idea what it is then :) */ |
462 |
diskio_stats_ptr->disk_name=malloc(16); |
463 |
snprintf(diskio_stats_ptr->disk_name, 16, "%d %d", major, minor); |
464 |
break; |
465 |
} |
466 |
|
467 |
diskio_stats_ptr->systime=time(NULL); |
468 |
num_diskio++; |
469 |
} |
470 |
|
471 |
fclose(f); |
472 |
|
473 |
#endif |
474 |
*entries=num_diskio; |
475 |
|
476 |
return diskio_stats; |
477 |
} |
478 |
|
479 |
diskio_stat_t *get_diskio_stats_diff(int *entries){ |
480 |
static diskio_stat_t *diskio_stats_diff=NULL; |
481 |
static int sizeof_diskio_stats_diff=0; |
482 |
diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr; |
483 |
int disks, x, y; |
484 |
|
485 |
if(diskio_stats==NULL){ |
486 |
diskio_stats_ptr=get_diskio_stats(&disks); |
487 |
*entries=disks; |
488 |
return diskio_stats_ptr; |
489 |
} |
490 |
|
491 |
diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff); |
492 |
if(diskio_stats_diff==NULL){ |
493 |
return NULL; |
494 |
} |
495 |
|
496 |
diskio_stats_diff_ptr=diskio_stats_diff; |
497 |
diskio_stats_ptr=diskio_stats; |
498 |
|
499 |
for(disks=0;disks<num_diskio;disks++){ |
500 |
if(diskio_stats_diff_ptr->disk_name!=NULL){ |
501 |
free(diskio_stats_diff_ptr->disk_name); |
502 |
} |
503 |
diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name); |
504 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes; |
505 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes; |
506 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime; |
507 |
|
508 |
diskio_stats_diff_ptr++; |
509 |
diskio_stats_ptr++; |
510 |
} |
511 |
|
512 |
diskio_stats_ptr=get_diskio_stats(&disks); |
513 |
diskio_stats_diff_ptr=diskio_stats_diff; |
514 |
|
515 |
for(x=0;x<sizeof_diskio_stats_diff;x++){ |
516 |
|
517 |
if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){ |
518 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes; |
519 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes; |
520 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime; |
521 |
}else{ |
522 |
diskio_stats_ptr=diskio_stats; |
523 |
for(y=0;y<disks;y++){ |
524 |
if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){ |
525 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes; |
526 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes; |
527 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime; |
528 |
|
529 |
break; |
530 |
} |
531 |
|
532 |
diskio_stats_ptr++; |
533 |
} |
534 |
} |
535 |
|
536 |
diskio_stats_ptr++; |
537 |
diskio_stats_diff_ptr++; |
538 |
|
539 |
} |
540 |
|
541 |
*entries=sizeof_diskio_stats_diff; |
542 |
return diskio_stats_diff; |
543 |
} |