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. |
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* |
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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. |
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* |
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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 |
#endif |
54 |
#ifdef FREEBSD |
55 |
#include <sys/dkstat.h> |
56 |
#include <devstat.h> |
57 |
#define VALID_FS_TYPES {"ufs", "mfs"} |
58 |
#endif |
59 |
#ifdef NETBSD |
60 |
#include <sys/param.h> |
61 |
#include <sys/sysctl.h> |
62 |
#include <sys/disk.h> |
63 |
#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \ |
64 |
"ntfs"} |
65 |
#endif |
66 |
|
67 |
#define START_VAL 1 |
68 |
|
69 |
char *copy_string(char *orig_ptr, const char *newtext){ |
70 |
|
71 |
/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */ |
72 |
orig_ptr=realloc(orig_ptr, (1+strlen(newtext))); |
73 |
if(orig_ptr==NULL){ |
74 |
return NULL; |
75 |
} |
76 |
strcpy(orig_ptr, newtext); |
77 |
|
78 |
return orig_ptr; |
79 |
} |
80 |
|
81 |
|
82 |
void init_disk_stat(int start, int end, disk_stat_t *disk_stats){ |
83 |
|
84 |
for(disk_stats+=start; start<=end; start++){ |
85 |
disk_stats->device_name=NULL; |
86 |
disk_stats->fs_type=NULL; |
87 |
disk_stats->mnt_point=NULL; |
88 |
|
89 |
disk_stats++; |
90 |
} |
91 |
} |
92 |
|
93 |
disk_stat_t *get_disk_stats(int *entries){ |
94 |
|
95 |
static disk_stat_t *disk_stats; |
96 |
static int watermark=-1; |
97 |
|
98 |
char *fs_types[] = VALID_FS_TYPES; |
99 |
int x, valid_type; |
100 |
int num_disks=0; |
101 |
#if defined(LINUX) || defined (SOLARIS) |
102 |
FILE *f; |
103 |
#endif |
104 |
|
105 |
disk_stat_t *disk_ptr; |
106 |
|
107 |
#ifdef SOLARIS |
108 |
struct mnttab mp; |
109 |
struct statvfs fs; |
110 |
#endif |
111 |
#ifdef LINUX |
112 |
struct mntent *mp; |
113 |
struct statfs fs; |
114 |
#endif |
115 |
#ifdef ALLBSD |
116 |
int nummnt; |
117 |
struct statfs *mp; |
118 |
#endif |
119 |
|
120 |
if(watermark==-1){ |
121 |
disk_stats=malloc(START_VAL * sizeof(disk_stat_t)); |
122 |
if(disk_stats==NULL){ |
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return NULL; |
124 |
} |
125 |
watermark=START_VAL; |
126 |
init_disk_stat(0, watermark-1, disk_stats); |
127 |
} |
128 |
#ifdef ALLBSD |
129 |
nummnt=getmntinfo(&mp , MNT_LOCAL); |
130 |
if (nummnt<=0){ |
131 |
return NULL; |
132 |
} |
133 |
for(;nummnt--; mp++){ |
134 |
valid_type=0; |
135 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
136 |
if(strcmp(mp->f_fstypename, fs_types[x]) ==0){ |
137 |
valid_type=1; |
138 |
break; |
139 |
} |
140 |
} |
141 |
#endif |
142 |
|
143 |
#ifdef LINUX |
144 |
if ((f=setmntent("/etc/mtab", "r" ))==NULL){ |
145 |
return NULL; |
146 |
} |
147 |
|
148 |
while((mp=getmntent(f))){ |
149 |
if((statfs(mp->mnt_dir, &fs)) !=0){ |
150 |
continue; |
151 |
} |
152 |
|
153 |
valid_type=0; |
154 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
155 |
if(strcmp(mp->mnt_type, fs_types[x]) ==0){ |
156 |
valid_type=1; |
157 |
break; |
158 |
} |
159 |
} |
160 |
#endif |
161 |
|
162 |
#ifdef SOLARIS |
163 |
if ((f=fopen("/etc/mnttab", "r" ))==NULL){ |
164 |
return NULL; |
165 |
} |
166 |
while((getmntent(f, &mp)) == 0){ |
167 |
if ((statvfs(mp.mnt_mountp, &fs)) !=0){ |
168 |
continue; |
169 |
} |
170 |
valid_type=0; |
171 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
172 |
if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){ |
173 |
valid_type=1; |
174 |
break; |
175 |
} |
176 |
} |
177 |
#endif |
178 |
|
179 |
if(valid_type){ |
180 |
if(num_disks>watermark-1){ |
181 |
disk_ptr=disk_stats; |
182 |
if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){ |
183 |
disk_stats=disk_ptr; |
184 |
return NULL; |
185 |
} |
186 |
|
187 |
watermark=watermark*2; |
188 |
init_disk_stat(num_disks, watermark-1, disk_stats); |
189 |
} |
190 |
|
191 |
disk_ptr=disk_stats+num_disks; |
192 |
#ifdef ALLBSD |
193 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){ |
194 |
return NULL; |
195 |
} |
196 |
|
197 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){ |
198 |
return NULL; |
199 |
} |
200 |
|
201 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){ |
202 |
return NULL; |
203 |
} |
204 |
|
205 |
disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks; |
206 |
disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail; |
207 |
disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree); |
208 |
|
209 |
disk_ptr->total_inodes=(long long)mp->f_files; |
210 |
disk_ptr->free_inodes=(long long)mp->f_ffree; |
211 |
/* Freebsd doesn't have a "available" inodes */ |
212 |
disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes; |
213 |
#endif |
214 |
#ifdef LINUX |
215 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){ |
216 |
return NULL; |
217 |
} |
218 |
|
219 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){ |
220 |
return NULL; |
221 |
} |
222 |
|
223 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){ |
224 |
return NULL; |
225 |
} |
226 |
disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks; |
227 |
disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail; |
228 |
disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree); |
229 |
|
230 |
disk_ptr->total_inodes=(long long)fs.f_files; |
231 |
disk_ptr->free_inodes=(long long)fs.f_ffree; |
232 |
/* Linux doesn't have a "available" inodes */ |
233 |
disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes; |
234 |
#endif |
235 |
|
236 |
#ifdef SOLARIS |
237 |
/* Memory leak in event of realloc failing */ |
238 |
/* Maybe make this char[bigenough] and do strncpy's and put a null in the end? |
239 |
* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob |
240 |
* be upwards of a k each |
241 |
*/ |
242 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){ |
243 |
return NULL; |
244 |
} |
245 |
|
246 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){ |
247 |
return NULL; |
248 |
} |
249 |
|
250 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){ |
251 |
return NULL; |
252 |
} |
253 |
|
254 |
disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks; |
255 |
disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail; |
256 |
disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree); |
257 |
|
258 |
disk_ptr->total_inodes=(long long)fs.f_files; |
259 |
disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree; |
260 |
disk_ptr->free_inodes=(long long)fs.f_favail; |
261 |
#endif |
262 |
num_disks++; |
263 |
} |
264 |
} |
265 |
|
266 |
*entries=num_disks; |
267 |
|
268 |
/* If this fails, there is very little i can do about it, so i'll ignore it :) */ |
269 |
#if defined(LINUX) || defined(SOLARIS) |
270 |
fclose(f); |
271 |
#endif |
272 |
|
273 |
return disk_stats; |
274 |
|
275 |
} |
276 |
void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){ |
277 |
|
278 |
for(diskio_stats+=start; start<end; start++){ |
279 |
diskio_stats->disk_name=NULL; |
280 |
|
281 |
diskio_stats++; |
282 |
} |
283 |
} |
284 |
|
285 |
diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){ |
286 |
|
287 |
if(diskio_stats==NULL){ |
288 |
|
289 |
if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){ |
290 |
return NULL; |
291 |
} |
292 |
diskio_stat_init(0, needed_entries, diskio_stats); |
293 |
*cur_entries=needed_entries; |
294 |
|
295 |
return diskio_stats; |
296 |
} |
297 |
|
298 |
|
299 |
if(*cur_entries<needed_entries){ |
300 |
diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries)); |
301 |
if(diskio_stats==NULL){ |
302 |
return NULL; |
303 |
} |
304 |
diskio_stat_init(*cur_entries, needed_entries, diskio_stats); |
305 |
*cur_entries=needed_entries; |
306 |
} |
307 |
|
308 |
return diskio_stats; |
309 |
} |
310 |
|
311 |
static diskio_stat_t *diskio_stats=NULL; |
312 |
static int num_diskio=0; |
313 |
|
314 |
#ifdef LINUX |
315 |
typedef struct { |
316 |
int major; |
317 |
int minor; |
318 |
} partition; |
319 |
#endif |
320 |
|
321 |
diskio_stat_t *get_diskio_stats(int *entries){ |
322 |
|
323 |
static int sizeof_diskio_stats=0; |
324 |
diskio_stat_t *diskio_stats_ptr; |
325 |
|
326 |
#ifdef SOLARIS |
327 |
kstat_ctl_t *kc; |
328 |
kstat_t *ksp; |
329 |
kstat_io_t kios; |
330 |
#endif |
331 |
#ifdef LINUX |
332 |
FILE *f; |
333 |
char *line_ptr; |
334 |
int major, minor; |
335 |
char dev_letter; |
336 |
int has_pp_stats = 1; |
337 |
static partition *parts = NULL; |
338 |
static int alloc_parts = 0; |
339 |
int i, n; |
340 |
time_t now; |
341 |
#endif |
342 |
#ifdef FREEBSD |
343 |
static struct statinfo stats; |
344 |
static int stats_init = 0; |
345 |
int counter; |
346 |
struct device_selection *dev_sel = NULL; |
347 |
int n_selected, n_selections; |
348 |
long sel_gen; |
349 |
struct devstat *dev_ptr; |
350 |
#endif |
351 |
#ifdef NETBSD |
352 |
struct disk_sysctl *stats; |
353 |
int num_disks, i; |
354 |
int mib[3]; |
355 |
size_t size; |
356 |
#endif |
357 |
|
358 |
num_diskio=0; |
359 |
|
360 |
#ifdef NETBSD |
361 |
mib[0] = CTL_HW; |
362 |
mib[1] = HW_DISKSTATS; |
363 |
mib[2] = sizeof(struct disk_sysctl); |
364 |
|
365 |
if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) { |
366 |
return NULL; |
367 |
} |
368 |
num_disks = size / sizeof(struct disk_sysctl); |
369 |
|
370 |
stats = malloc(size); |
371 |
if (stats == NULL) { |
372 |
return NULL; |
373 |
} |
374 |
|
375 |
if (sysctl(mib, 3, stats, &size, NULL, 0) < 0) { |
376 |
return NULL; |
377 |
} |
378 |
|
379 |
for (i = 0; i < num_disks; i++) { |
380 |
u_int64_t rbytes, wbytes; |
381 |
|
382 |
#ifdef HAVE_DK_RBYTES |
383 |
rbytes = stats[i].dk_rbytes; |
384 |
wbytes = stats[i].dk_wbytes; |
385 |
#else |
386 |
/* Before 1.6.1, NetBSD merged reads and writes. */ |
387 |
rbytes = wbytes = stats[i].dk_bytes; |
388 |
#endif |
389 |
|
390 |
/* Don't keep stats for disks that have never been used. */ |
391 |
if (rbytes == 0 && wbytes == 0) { |
392 |
continue; |
393 |
} |
394 |
|
395 |
diskio_stats = diskio_stat_malloc(num_diskio + 1, |
396 |
&sizeof_diskio_stats, |
397 |
diskio_stats); |
398 |
if (diskio_stats == NULL) { |
399 |
return NULL; |
400 |
} |
401 |
diskio_stats_ptr = diskio_stats + num_diskio; |
402 |
|
403 |
diskio_stats_ptr->read_bytes = rbytes; |
404 |
diskio_stats_ptr->write_bytes = wbytes; |
405 |
if (diskio_stats_ptr->disk_name != NULL) { |
406 |
free(diskio_stats_ptr->disk_name); |
407 |
} |
408 |
diskio_stats_ptr->disk_name = strdup(stats[i].dk_name); |
409 |
diskio_stats_ptr->systime = time(NULL); |
410 |
|
411 |
num_diskio++; |
412 |
} |
413 |
|
414 |
free(stats); |
415 |
#endif |
416 |
|
417 |
#ifdef FREEBSD |
418 |
if (!stats_init) { |
419 |
stats.dinfo=malloc(sizeof(struct devinfo)); |
420 |
if(stats.dinfo==NULL) return NULL; |
421 |
bzero(stats.dinfo, sizeof(struct devinfo)); |
422 |
stats_init = 1; |
423 |
} |
424 |
#ifdef FREEBSD5 |
425 |
if ((devstat_getdevs(NULL, &stats)) < 0) return NULL; |
426 |
/* Not aware of a get all devices, so i said 999. If we ever |
427 |
* find a machine with more than 999 disks, then i'll change |
428 |
* this number :) |
429 |
*/ |
430 |
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; |
431 |
#else |
432 |
if ((getdevs(&stats)) < 0) return NULL; |
433 |
/* Not aware of a get all devices, so i said 999. If we ever |
434 |
* find a machine with more than 999 disks, then i'll change |
435 |
* this number :) |
436 |
*/ |
437 |
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; |
438 |
#endif |
439 |
|
440 |
for(counter=0;counter<stats.dinfo->numdevs;counter++){ |
441 |
dev_ptr=&stats.dinfo->devices[dev_sel[counter].position]; |
442 |
|
443 |
/* Throw away devices that have done nothing, ever.. Eg "odd" |
444 |
* devices.. like mem, proc.. and also doesn't report floppy |
445 |
* drives etc unless they are doing stuff :) |
446 |
*/ |
447 |
#ifdef FREEBSD5 |
448 |
if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue; |
449 |
#else |
450 |
if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue; |
451 |
#endif |
452 |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
453 |
return NULL; |
454 |
} |
455 |
diskio_stats_ptr=diskio_stats+num_diskio; |
456 |
|
457 |
#ifdef FREEBSD5 |
458 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ]; |
459 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE]; |
460 |
#else |
461 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes_read; |
462 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes_written; |
463 |
#endif |
464 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
465 |
asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number); |
466 |
diskio_stats_ptr->systime=time(NULL); |
467 |
|
468 |
num_diskio++; |
469 |
} |
470 |
free(dev_sel); |
471 |
|
472 |
#endif |
473 |
#ifdef SOLARIS |
474 |
if ((kc = kstat_open()) == NULL) { |
475 |
return NULL; |
476 |
} |
477 |
|
478 |
for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) { |
479 |
if (!strcmp(ksp->ks_class, "disk")) { |
480 |
|
481 |
if(ksp->ks_type != KSTAT_TYPE_IO) continue; |
482 |
/* We dont want metadevices appearins as num_diskio */ |
483 |
if(strcmp(ksp->ks_module, "md")==0) continue; |
484 |
if((kstat_read(kc, ksp, &kios))==-1){ |
485 |
} |
486 |
|
487 |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
488 |
kstat_close(kc); |
489 |
return NULL; |
490 |
} |
491 |
diskio_stats_ptr=diskio_stats+num_diskio; |
492 |
|
493 |
diskio_stats_ptr->read_bytes=kios.nread; |
494 |
|
495 |
diskio_stats_ptr->write_bytes=kios.nwritten; |
496 |
|
497 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
498 |
|
499 |
diskio_stats_ptr->disk_name=strdup(ksp->ks_name); |
500 |
diskio_stats_ptr->systime=time(NULL); |
501 |
num_diskio++; |
502 |
} |
503 |
} |
504 |
|
505 |
kstat_close(kc); |
506 |
#endif |
507 |
|
508 |
#ifdef LINUX |
509 |
num_diskio = 0; |
510 |
n = 0; |
511 |
|
512 |
/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels |
513 |
have statistics in here too, so we can use those directly. */ |
514 |
|
515 |
f = fopen("/proc/partitions", "r"); |
516 |
if (f == NULL) goto out; |
517 |
now = time(NULL); |
518 |
|
519 |
while ((line_ptr = f_read_line(f, "")) != NULL) { |
520 |
char name[20]; |
521 |
char *s; |
522 |
long long rsect, wsect; |
523 |
|
524 |
int nr = sscanf(line_ptr, |
525 |
" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld", |
526 |
&major, &minor, name, &rsect, &wsect); |
527 |
if (nr < 3) continue; |
528 |
if (nr < 5) { |
529 |
has_pp_stats = 0; |
530 |
rsect = 0; |
531 |
wsect = 0; |
532 |
} |
533 |
|
534 |
/* Skip device names ending in numbers, since they're |
535 |
partitions. */ |
536 |
s = name; |
537 |
while (*s != '\0') s++; |
538 |
--s; |
539 |
if (*s >= '0' && *s <= '9') continue; |
540 |
|
541 |
diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats, |
542 |
diskio_stats); |
543 |
if (diskio_stats == NULL) goto out; |
544 |
if (n >= alloc_parts) { |
545 |
alloc_parts += 16; |
546 |
parts = realloc(parts, alloc_parts * sizeof *parts); |
547 |
if (parts == NULL) { |
548 |
alloc_parts = 0; |
549 |
goto out; |
550 |
} |
551 |
} |
552 |
|
553 |
if (diskio_stats[n].disk_name != NULL) |
554 |
free(diskio_stats[n].disk_name); |
555 |
diskio_stats[n].disk_name = strdup(name); |
556 |
diskio_stats[n].read_bytes = rsect * 512; |
557 |
diskio_stats[n].write_bytes = wsect * 512; |
558 |
diskio_stats[n].systime = now; |
559 |
parts[n].major = major; |
560 |
parts[n].minor = minor; |
561 |
|
562 |
n++; |
563 |
} |
564 |
|
565 |
if (!has_pp_stats) { |
566 |
/* This is an older kernel without stats in /proc/partitions. |
567 |
Read what we can from /proc/stat instead. */ |
568 |
|
569 |
f = fopen("/proc/stat", "r"); |
570 |
if (f == NULL) goto out; |
571 |
now = time(NULL); |
572 |
|
573 |
line_ptr = f_read_line(f, "disk_io:"); |
574 |
if (line_ptr == NULL) goto out; |
575 |
|
576 |
while((line_ptr=strchr(line_ptr, ' '))!=NULL){ |
577 |
long long rsect, wsect; |
578 |
|
579 |
if (*++line_ptr == '\0') break; |
580 |
|
581 |
if((sscanf(line_ptr, |
582 |
"(%d,%d):(%*d, %*d, %lld, %*d, %lld)", |
583 |
&major, &minor, &rsect, &wsect)) != 4) { |
584 |
continue; |
585 |
} |
586 |
|
587 |
/* Find the corresponding device from earlier. |
588 |
Just to add to the fun, "minor" is actually the disk |
589 |
number, not the device minor, so we need to figure |
590 |
out the real minor number based on the major! |
591 |
This list is not exhaustive; if you're running |
592 |
an older kernel you probably don't have fancy |
593 |
I2O hardware anyway... */ |
594 |
switch (major) { |
595 |
case 3: |
596 |
case 21: |
597 |
case 22: |
598 |
case 33: |
599 |
case 34: |
600 |
case 36: |
601 |
case 56: |
602 |
case 57: |
603 |
case 88: |
604 |
case 89: |
605 |
case 90: |
606 |
case 91: |
607 |
minor *= 64; |
608 |
break; |
609 |
case 9: |
610 |
case 43: |
611 |
break; |
612 |
default: |
613 |
minor *= 16; |
614 |
break; |
615 |
} |
616 |
for (i = 0; i < n; i++) { |
617 |
if (major == parts[i].major |
618 |
&& minor == parts[i].minor) |
619 |
break; |
620 |
} |
621 |
if (i == n) continue; |
622 |
|
623 |
/* We read the number of blocks. Blocks are stored in |
624 |
512 bytes */ |
625 |
diskio_stats[i].read_bytes = rsect * 512; |
626 |
diskio_stats[i].write_bytes = wsect * 512; |
627 |
diskio_stats[i].systime = now; |
628 |
} |
629 |
} |
630 |
|
631 |
num_diskio = n; |
632 |
out: |
633 |
if (f != NULL) fclose(f); |
634 |
|
635 |
#endif |
636 |
*entries=num_diskio; |
637 |
|
638 |
return diskio_stats; |
639 |
} |
640 |
|
641 |
diskio_stat_t *get_diskio_stats_diff(int *entries){ |
642 |
static diskio_stat_t *diskio_stats_diff=NULL; |
643 |
static int sizeof_diskio_stats_diff=0; |
644 |
diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr; |
645 |
int disks, x, y; |
646 |
|
647 |
if(diskio_stats==NULL){ |
648 |
diskio_stats_ptr=get_diskio_stats(&disks); |
649 |
*entries=disks; |
650 |
return diskio_stats_ptr; |
651 |
} |
652 |
|
653 |
diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff); |
654 |
if(diskio_stats_diff==NULL){ |
655 |
return NULL; |
656 |
} |
657 |
|
658 |
diskio_stats_diff_ptr=diskio_stats_diff; |
659 |
diskio_stats_ptr=diskio_stats; |
660 |
|
661 |
for(disks=0;disks<num_diskio;disks++){ |
662 |
if(diskio_stats_diff_ptr->disk_name!=NULL){ |
663 |
free(diskio_stats_diff_ptr->disk_name); |
664 |
} |
665 |
diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name); |
666 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes; |
667 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes; |
668 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime; |
669 |
|
670 |
diskio_stats_diff_ptr++; |
671 |
diskio_stats_ptr++; |
672 |
} |
673 |
|
674 |
diskio_stats_ptr=get_diskio_stats(&disks); |
675 |
diskio_stats_diff_ptr=diskio_stats_diff; |
676 |
|
677 |
for(x=0;x<sizeof_diskio_stats_diff;x++){ |
678 |
|
679 |
if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){ |
680 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes; |
681 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes; |
682 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime; |
683 |
}else{ |
684 |
diskio_stats_ptr=diskio_stats; |
685 |
for(y=0;y<disks;y++){ |
686 |
if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){ |
687 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes; |
688 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes; |
689 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime; |
690 |
|
691 |
break; |
692 |
} |
693 |
|
694 |
diskio_stats_ptr++; |
695 |
} |
696 |
} |
697 |
|
698 |
diskio_stats_ptr++; |
699 |
diskio_stats_diff_ptr++; |
700 |
|
701 |
} |
702 |
|
703 |
*entries=sizeof_diskio_stats_diff; |
704 |
return diskio_stats_diff; |
705 |
} |