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 {"hpfs", "msdosfs", "ntfs", "udf", "ext2fs", \ |
58 |
"ufs", "mfs"} |
59 |
#endif |
60 |
#ifdef NETBSD |
61 |
#include <sys/param.h> |
62 |
#include <sys/sysctl.h> |
63 |
#include <sys/disk.h> |
64 |
#define VALID_FS_TYPES {"ffs", "mfs", "msdos", "lfs", "adosfs", "ext2fs", \ |
65 |
"ntfs"} |
66 |
#endif |
67 |
|
68 |
#define START_VAL 1 |
69 |
|
70 |
char *copy_string(char *orig_ptr, const char *newtext){ |
71 |
|
72 |
/* Maybe free if not NULL, and strdup rather than realloc and strcpy? */ |
73 |
orig_ptr=realloc(orig_ptr, (1+strlen(newtext))); |
74 |
if(orig_ptr==NULL){ |
75 |
return NULL; |
76 |
} |
77 |
strcpy(orig_ptr, newtext); |
78 |
|
79 |
return orig_ptr; |
80 |
} |
81 |
|
82 |
|
83 |
void init_disk_stat(int start, int end, disk_stat_t *disk_stats){ |
84 |
|
85 |
for(disk_stats+=start; start<=end; start++){ |
86 |
disk_stats->device_name=NULL; |
87 |
disk_stats->fs_type=NULL; |
88 |
disk_stats->mnt_point=NULL; |
89 |
|
90 |
disk_stats++; |
91 |
} |
92 |
} |
93 |
|
94 |
disk_stat_t *get_disk_stats(int *entries){ |
95 |
|
96 |
static disk_stat_t *disk_stats; |
97 |
static int watermark=-1; |
98 |
|
99 |
char *fs_types[] = VALID_FS_TYPES; |
100 |
int x, valid_type; |
101 |
int num_disks=0; |
102 |
#if defined(LINUX) || defined (SOLARIS) |
103 |
FILE *f; |
104 |
#endif |
105 |
|
106 |
disk_stat_t *disk_ptr; |
107 |
|
108 |
#ifdef SOLARIS |
109 |
struct mnttab mp; |
110 |
struct statvfs fs; |
111 |
#endif |
112 |
#ifdef LINUX |
113 |
struct mntent *mp; |
114 |
struct statfs fs; |
115 |
#endif |
116 |
#ifdef ALLBSD |
117 |
int nummnt; |
118 |
struct statfs *mp; |
119 |
#endif |
120 |
|
121 |
if(watermark==-1){ |
122 |
disk_stats=malloc(START_VAL * sizeof(disk_stat_t)); |
123 |
if(disk_stats==NULL){ |
124 |
return NULL; |
125 |
} |
126 |
watermark=START_VAL; |
127 |
init_disk_stat(0, watermark-1, disk_stats); |
128 |
} |
129 |
#ifdef ALLBSD |
130 |
nummnt=getmntinfo(&mp , MNT_LOCAL); |
131 |
if (nummnt<=0){ |
132 |
return NULL; |
133 |
} |
134 |
for(;nummnt--; mp++){ |
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valid_type=0; |
136 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
137 |
if(strcmp(mp->f_fstypename, fs_types[x]) ==0){ |
138 |
valid_type=1; |
139 |
break; |
140 |
} |
141 |
} |
142 |
#endif |
143 |
|
144 |
#ifdef LINUX |
145 |
if ((f=setmntent("/etc/mtab", "r" ))==NULL){ |
146 |
return NULL; |
147 |
} |
148 |
|
149 |
while((mp=getmntent(f))){ |
150 |
if((statfs(mp->mnt_dir, &fs)) !=0){ |
151 |
continue; |
152 |
} |
153 |
|
154 |
valid_type=0; |
155 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
156 |
if(strcmp(mp->mnt_type, fs_types[x]) ==0){ |
157 |
valid_type=1; |
158 |
break; |
159 |
} |
160 |
} |
161 |
#endif |
162 |
|
163 |
#ifdef SOLARIS |
164 |
if ((f=fopen("/etc/mnttab", "r" ))==NULL){ |
165 |
return NULL; |
166 |
} |
167 |
while((getmntent(f, &mp)) == 0){ |
168 |
if ((statvfs(mp.mnt_mountp, &fs)) !=0){ |
169 |
continue; |
170 |
} |
171 |
valid_type=0; |
172 |
for(x=0;x<((sizeof(fs_types))/(sizeof(char*)));x++){ |
173 |
if(strcmp(mp.mnt_fstype, fs_types[x]) ==0){ |
174 |
valid_type=1; |
175 |
break; |
176 |
} |
177 |
} |
178 |
#endif |
179 |
|
180 |
if(valid_type){ |
181 |
if(num_disks>watermark-1){ |
182 |
disk_ptr=disk_stats; |
183 |
if((disk_stats=realloc(disk_stats, (watermark*2 * sizeof(disk_stat_t))))==NULL){ |
184 |
disk_stats=disk_ptr; |
185 |
return NULL; |
186 |
} |
187 |
|
188 |
watermark=watermark*2; |
189 |
init_disk_stat(num_disks, watermark-1, disk_stats); |
190 |
} |
191 |
|
192 |
disk_ptr=disk_stats+num_disks; |
193 |
#ifdef ALLBSD |
194 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->f_mntfromname))==NULL){ |
195 |
return NULL; |
196 |
} |
197 |
|
198 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->f_fstypename))==NULL){ |
199 |
return NULL; |
200 |
} |
201 |
|
202 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->f_mntonname))==NULL){ |
203 |
return NULL; |
204 |
} |
205 |
|
206 |
disk_ptr->size = (long long)mp->f_bsize * (long long) mp->f_blocks; |
207 |
disk_ptr->avail = (long long)mp->f_bsize * (long long) mp->f_bavail; |
208 |
disk_ptr->used = (disk_ptr->size) - ((long long)mp->f_bsize * (long long)mp->f_bfree); |
209 |
|
210 |
disk_ptr->total_inodes=(long long)mp->f_files; |
211 |
disk_ptr->free_inodes=(long long)mp->f_ffree; |
212 |
/* Freebsd doesn't have a "available" inodes */ |
213 |
disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes; |
214 |
#endif |
215 |
#ifdef LINUX |
216 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp->mnt_fsname))==NULL){ |
217 |
return NULL; |
218 |
} |
219 |
|
220 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp->mnt_type))==NULL){ |
221 |
return NULL; |
222 |
} |
223 |
|
224 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp->mnt_dir))==NULL){ |
225 |
return NULL; |
226 |
} |
227 |
disk_ptr->size = (long long)fs.f_bsize * (long long)fs.f_blocks; |
228 |
disk_ptr->avail = (long long)fs.f_bsize * (long long)fs.f_bavail; |
229 |
disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_bsize * (long long)fs.f_bfree); |
230 |
|
231 |
disk_ptr->total_inodes=(long long)fs.f_files; |
232 |
disk_ptr->free_inodes=(long long)fs.f_ffree; |
233 |
/* Linux doesn't have a "available" inodes */ |
234 |
disk_ptr->used_inodes=disk_ptr->total_inodes-disk_ptr->free_inodes; |
235 |
#endif |
236 |
|
237 |
#ifdef SOLARIS |
238 |
/* Memory leak in event of realloc failing */ |
239 |
/* Maybe make this char[bigenough] and do strncpy's and put a null in the end? |
240 |
* Downside is its a bit hungry for a lot of mounts, as MNT_MAX_SIZE would prob |
241 |
* be upwards of a k each |
242 |
*/ |
243 |
if((disk_ptr->device_name=copy_string(disk_ptr->device_name, mp.mnt_special))==NULL){ |
244 |
return NULL; |
245 |
} |
246 |
|
247 |
if((disk_ptr->fs_type=copy_string(disk_ptr->fs_type, mp.mnt_fstype))==NULL){ |
248 |
return NULL; |
249 |
} |
250 |
|
251 |
if((disk_ptr->mnt_point=copy_string(disk_ptr->mnt_point, mp.mnt_mountp))==NULL){ |
252 |
return NULL; |
253 |
} |
254 |
|
255 |
disk_ptr->size = (long long)fs.f_frsize * (long long)fs.f_blocks; |
256 |
disk_ptr->avail = (long long)fs.f_frsize * (long long)fs.f_bavail; |
257 |
disk_ptr->used = (disk_ptr->size) - ((long long)fs.f_frsize * (long long)fs.f_bfree); |
258 |
|
259 |
disk_ptr->total_inodes=(long long)fs.f_files; |
260 |
disk_ptr->used_inodes=disk_ptr->total_inodes - (long long)fs.f_ffree; |
261 |
disk_ptr->free_inodes=(long long)fs.f_favail; |
262 |
#endif |
263 |
num_disks++; |
264 |
} |
265 |
} |
266 |
|
267 |
*entries=num_disks; |
268 |
|
269 |
/* If this fails, there is very little i can do about it, so i'll ignore it :) */ |
270 |
#if defined(LINUX) || defined(SOLARIS) |
271 |
fclose(f); |
272 |
#endif |
273 |
|
274 |
return disk_stats; |
275 |
|
276 |
} |
277 |
void diskio_stat_init(int start, int end, diskio_stat_t *diskio_stats){ |
278 |
|
279 |
for(diskio_stats+=start; start<end; start++){ |
280 |
diskio_stats->disk_name=NULL; |
281 |
|
282 |
diskio_stats++; |
283 |
} |
284 |
} |
285 |
|
286 |
diskio_stat_t *diskio_stat_malloc(int needed_entries, int *cur_entries, diskio_stat_t *diskio_stats){ |
287 |
|
288 |
if(diskio_stats==NULL){ |
289 |
|
290 |
if((diskio_stats=malloc(needed_entries * sizeof(diskio_stat_t)))==NULL){ |
291 |
return NULL; |
292 |
} |
293 |
diskio_stat_init(0, needed_entries, diskio_stats); |
294 |
*cur_entries=needed_entries; |
295 |
|
296 |
return diskio_stats; |
297 |
} |
298 |
|
299 |
|
300 |
if(*cur_entries<needed_entries){ |
301 |
diskio_stats=realloc(diskio_stats, (sizeof(diskio_stat_t)*needed_entries)); |
302 |
if(diskio_stats==NULL){ |
303 |
return NULL; |
304 |
} |
305 |
diskio_stat_init(*cur_entries, needed_entries, diskio_stats); |
306 |
*cur_entries=needed_entries; |
307 |
} |
308 |
|
309 |
return diskio_stats; |
310 |
} |
311 |
|
312 |
static diskio_stat_t *diskio_stats=NULL; |
313 |
static int num_diskio=0; |
314 |
|
315 |
#ifdef LINUX |
316 |
typedef struct { |
317 |
int major; |
318 |
int minor; |
319 |
} partition; |
320 |
#endif |
321 |
|
322 |
diskio_stat_t *get_diskio_stats(int *entries){ |
323 |
|
324 |
static int sizeof_diskio_stats=0; |
325 |
diskio_stat_t *diskio_stats_ptr; |
326 |
|
327 |
#ifdef SOLARIS |
328 |
kstat_ctl_t *kc; |
329 |
kstat_t *ksp; |
330 |
kstat_io_t kios; |
331 |
#endif |
332 |
#ifdef LINUX |
333 |
FILE *f; |
334 |
char *line_ptr; |
335 |
int major, minor; |
336 |
char dev_letter; |
337 |
int has_pp_stats = 1; |
338 |
static partition *parts = NULL; |
339 |
static int alloc_parts = 0; |
340 |
int i, n; |
341 |
time_t now; |
342 |
#endif |
343 |
#ifdef FREEBSD |
344 |
static struct statinfo stats; |
345 |
static int stats_init = 0; |
346 |
int counter; |
347 |
struct device_selection *dev_sel = NULL; |
348 |
int n_selected, n_selections; |
349 |
long sel_gen; |
350 |
struct devstat *dev_ptr; |
351 |
#endif |
352 |
#ifdef NETBSD |
353 |
struct disk_sysctl *stats; |
354 |
int num_disks, i; |
355 |
int mib[3]; |
356 |
size_t size; |
357 |
#endif |
358 |
|
359 |
num_diskio=0; |
360 |
|
361 |
#ifdef NETBSD |
362 |
mib[0] = CTL_HW; |
363 |
mib[1] = HW_DISKSTATS; |
364 |
mib[2] = sizeof(struct disk_sysctl); |
365 |
|
366 |
if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) { |
367 |
return NULL; |
368 |
} |
369 |
num_disks = size / sizeof(struct disk_sysctl); |
370 |
|
371 |
stats = malloc(size); |
372 |
if (stats == NULL) { |
373 |
return NULL; |
374 |
} |
375 |
|
376 |
if (sysctl(mib, 3, stats, &size, NULL, 0) < 0) { |
377 |
return NULL; |
378 |
} |
379 |
|
380 |
for (i = 0; i < num_disks; i++) { |
381 |
u_int64_t rbytes, wbytes; |
382 |
|
383 |
#ifdef HAVE_DK_RBYTES |
384 |
rbytes = stats[i].dk_rbytes; |
385 |
wbytes = stats[i].dk_wbytes; |
386 |
#else |
387 |
/* Before 1.6.1, NetBSD merged reads and writes. */ |
388 |
rbytes = wbytes = stats[i].dk_bytes; |
389 |
#endif |
390 |
|
391 |
/* Don't keep stats for disks that have never been used. */ |
392 |
if (rbytes == 0 && wbytes == 0) { |
393 |
continue; |
394 |
} |
395 |
|
396 |
diskio_stats = diskio_stat_malloc(num_diskio + 1, |
397 |
&sizeof_diskio_stats, |
398 |
diskio_stats); |
399 |
if (diskio_stats == NULL) { |
400 |
return NULL; |
401 |
} |
402 |
diskio_stats_ptr = diskio_stats + num_diskio; |
403 |
|
404 |
diskio_stats_ptr->read_bytes = rbytes; |
405 |
diskio_stats_ptr->write_bytes = wbytes; |
406 |
if (diskio_stats_ptr->disk_name != NULL) { |
407 |
free(diskio_stats_ptr->disk_name); |
408 |
} |
409 |
diskio_stats_ptr->disk_name = strdup(stats[i].dk_name); |
410 |
diskio_stats_ptr->systime = time(NULL); |
411 |
|
412 |
num_diskio++; |
413 |
} |
414 |
|
415 |
free(stats); |
416 |
#endif |
417 |
|
418 |
#ifdef FREEBSD |
419 |
if (!stats_init) { |
420 |
stats.dinfo=malloc(sizeof(struct devinfo)); |
421 |
if(stats.dinfo==NULL) return NULL; |
422 |
bzero(stats.dinfo, sizeof(struct devinfo)); |
423 |
stats_init = 1; |
424 |
} |
425 |
#ifdef FREEBSD5 |
426 |
if ((devstat_getdevs(NULL, &stats)) < 0) return NULL; |
427 |
/* Not aware of a get all devices, so i said 999. If we ever |
428 |
* find a machine with more than 999 disks, then i'll change |
429 |
* this number :) |
430 |
*/ |
431 |
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; |
432 |
#else |
433 |
if ((getdevs(&stats)) < 0) return NULL; |
434 |
/* Not aware of a get all devices, so i said 999. If we ever |
435 |
* find a machine with more than 999 disks, then i'll change |
436 |
* this number :) |
437 |
*/ |
438 |
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; |
439 |
#endif |
440 |
|
441 |
for(counter=0;counter<stats.dinfo->numdevs;counter++){ |
442 |
dev_ptr=&stats.dinfo->devices[dev_sel[counter].position]; |
443 |
|
444 |
/* Throw away devices that have done nothing, ever.. Eg "odd" |
445 |
* devices.. like mem, proc.. and also doesn't report floppy |
446 |
* drives etc unless they are doing stuff :) |
447 |
*/ |
448 |
#ifdef FREEBSD5 |
449 |
if((dev_ptr->bytes[DEVSTAT_READ]==0) && (dev_ptr->bytes[DEVSTAT_WRITE]==0)) continue; |
450 |
#else |
451 |
if((dev_ptr->bytes_read==0) && (dev_ptr->bytes_written==0)) continue; |
452 |
#endif |
453 |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
454 |
return NULL; |
455 |
} |
456 |
diskio_stats_ptr=diskio_stats+num_diskio; |
457 |
|
458 |
#ifdef FREEBSD5 |
459 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes[DEVSTAT_READ]; |
460 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes[DEVSTAT_WRITE]; |
461 |
#else |
462 |
diskio_stats_ptr->read_bytes=dev_ptr->bytes_read; |
463 |
diskio_stats_ptr->write_bytes=dev_ptr->bytes_written; |
464 |
#endif |
465 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
466 |
asprintf((&diskio_stats_ptr->disk_name), "%s%d", dev_ptr->device_name, dev_ptr->unit_number); |
467 |
diskio_stats_ptr->systime=time(NULL); |
468 |
|
469 |
num_diskio++; |
470 |
} |
471 |
free(dev_sel); |
472 |
|
473 |
#endif |
474 |
#ifdef SOLARIS |
475 |
if ((kc = kstat_open()) == NULL) { |
476 |
return NULL; |
477 |
} |
478 |
|
479 |
for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) { |
480 |
if (!strcmp(ksp->ks_class, "disk")) { |
481 |
|
482 |
if(ksp->ks_type != KSTAT_TYPE_IO) continue; |
483 |
/* We dont want metadevices appearins as num_diskio */ |
484 |
if(strcmp(ksp->ks_module, "md")==0) continue; |
485 |
if((kstat_read(kc, ksp, &kios))==-1){ |
486 |
} |
487 |
|
488 |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
489 |
kstat_close(kc); |
490 |
return NULL; |
491 |
} |
492 |
diskio_stats_ptr=diskio_stats+num_diskio; |
493 |
|
494 |
diskio_stats_ptr->read_bytes=kios.nread; |
495 |
|
496 |
diskio_stats_ptr->write_bytes=kios.nwritten; |
497 |
|
498 |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
499 |
|
500 |
diskio_stats_ptr->disk_name=strdup(ksp->ks_name); |
501 |
diskio_stats_ptr->systime=time(NULL); |
502 |
num_diskio++; |
503 |
} |
504 |
} |
505 |
|
506 |
kstat_close(kc); |
507 |
#endif |
508 |
|
509 |
#ifdef LINUX |
510 |
num_diskio = 0; |
511 |
n = 0; |
512 |
|
513 |
/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels |
514 |
have statistics in here too, so we can use those directly. */ |
515 |
|
516 |
f = fopen("/proc/partitions", "r"); |
517 |
if (f == NULL) goto out; |
518 |
now = time(NULL); |
519 |
|
520 |
while ((line_ptr = f_read_line(f, "")) != NULL) { |
521 |
char name[20]; |
522 |
char *s; |
523 |
long long rsect, wsect; |
524 |
|
525 |
int nr = sscanf(line_ptr, |
526 |
" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld", |
527 |
&major, &minor, name, &rsect, &wsect); |
528 |
if (nr < 3) continue; |
529 |
if (nr < 5) { |
530 |
has_pp_stats = 0; |
531 |
rsect = 0; |
532 |
wsect = 0; |
533 |
} |
534 |
|
535 |
/* Skip device names ending in numbers, since they're |
536 |
partitions. */ |
537 |
s = name; |
538 |
while (*s != '\0') s++; |
539 |
--s; |
540 |
if (*s >= '0' && *s <= '9') continue; |
541 |
|
542 |
diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats, |
543 |
diskio_stats); |
544 |
if (diskio_stats == NULL) goto out; |
545 |
if (n >= alloc_parts) { |
546 |
alloc_parts += 16; |
547 |
parts = realloc(parts, alloc_parts * sizeof *parts); |
548 |
if (parts == NULL) { |
549 |
alloc_parts = 0; |
550 |
goto out; |
551 |
} |
552 |
} |
553 |
|
554 |
if (diskio_stats[n].disk_name != NULL) |
555 |
free(diskio_stats[n].disk_name); |
556 |
diskio_stats[n].disk_name = strdup(name); |
557 |
diskio_stats[n].read_bytes = rsect * 512; |
558 |
diskio_stats[n].write_bytes = wsect * 512; |
559 |
diskio_stats[n].systime = now; |
560 |
parts[n].major = major; |
561 |
parts[n].minor = minor; |
562 |
|
563 |
n++; |
564 |
} |
565 |
|
566 |
if (!has_pp_stats) { |
567 |
/* This is an older kernel without stats in /proc/partitions. |
568 |
Read what we can from /proc/stat instead. */ |
569 |
|
570 |
f = fopen("/proc/stat", "r"); |
571 |
if (f == NULL) goto out; |
572 |
now = time(NULL); |
573 |
|
574 |
line_ptr = f_read_line(f, "disk_io:"); |
575 |
if (line_ptr == NULL) goto out; |
576 |
|
577 |
while((line_ptr=strchr(line_ptr, ' '))!=NULL){ |
578 |
long long rsect, wsect; |
579 |
|
580 |
if (*++line_ptr == '\0') break; |
581 |
|
582 |
if((sscanf(line_ptr, |
583 |
"(%d,%d):(%*d, %*d, %lld, %*d, %lld)", |
584 |
&major, &minor, &rsect, &wsect)) != 4) { |
585 |
continue; |
586 |
} |
587 |
|
588 |
/* Find the corresponding device from earlier. |
589 |
Just to add to the fun, "minor" is actually the disk |
590 |
number, not the device minor, so we need to figure |
591 |
out the real minor number based on the major! |
592 |
This list is not exhaustive; if you're running |
593 |
an older kernel you probably don't have fancy |
594 |
I2O hardware anyway... */ |
595 |
switch (major) { |
596 |
case 3: |
597 |
case 21: |
598 |
case 22: |
599 |
case 33: |
600 |
case 34: |
601 |
case 36: |
602 |
case 56: |
603 |
case 57: |
604 |
case 88: |
605 |
case 89: |
606 |
case 90: |
607 |
case 91: |
608 |
minor *= 64; |
609 |
break; |
610 |
case 9: |
611 |
case 43: |
612 |
break; |
613 |
default: |
614 |
minor *= 16; |
615 |
break; |
616 |
} |
617 |
for (i = 0; i < n; i++) { |
618 |
if (major == parts[i].major |
619 |
&& minor == parts[i].minor) |
620 |
break; |
621 |
} |
622 |
if (i == n) continue; |
623 |
|
624 |
/* We read the number of blocks. Blocks are stored in |
625 |
512 bytes */ |
626 |
diskio_stats[i].read_bytes = rsect * 512; |
627 |
diskio_stats[i].write_bytes = wsect * 512; |
628 |
diskio_stats[i].systime = now; |
629 |
} |
630 |
} |
631 |
|
632 |
num_diskio = n; |
633 |
out: |
634 |
if (f != NULL) fclose(f); |
635 |
|
636 |
#endif |
637 |
*entries=num_diskio; |
638 |
|
639 |
return diskio_stats; |
640 |
} |
641 |
|
642 |
diskio_stat_t *get_diskio_stats_diff(int *entries){ |
643 |
static diskio_stat_t *diskio_stats_diff=NULL; |
644 |
static int sizeof_diskio_stats_diff=0; |
645 |
diskio_stat_t *diskio_stats_diff_ptr, *diskio_stats_ptr; |
646 |
int disks, x, y; |
647 |
|
648 |
if(diskio_stats==NULL){ |
649 |
diskio_stats_ptr=get_diskio_stats(&disks); |
650 |
*entries=disks; |
651 |
return diskio_stats_ptr; |
652 |
} |
653 |
|
654 |
diskio_stats_diff=diskio_stat_malloc(num_diskio, &sizeof_diskio_stats_diff, diskio_stats_diff); |
655 |
if(diskio_stats_diff==NULL){ |
656 |
return NULL; |
657 |
} |
658 |
|
659 |
diskio_stats_diff_ptr=diskio_stats_diff; |
660 |
diskio_stats_ptr=diskio_stats; |
661 |
|
662 |
for(disks=0;disks<num_diskio;disks++){ |
663 |
if(diskio_stats_diff_ptr->disk_name!=NULL){ |
664 |
free(diskio_stats_diff_ptr->disk_name); |
665 |
} |
666 |
diskio_stats_diff_ptr->disk_name=strdup(diskio_stats_ptr->disk_name); |
667 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes; |
668 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes; |
669 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime; |
670 |
|
671 |
diskio_stats_diff_ptr++; |
672 |
diskio_stats_ptr++; |
673 |
} |
674 |
|
675 |
diskio_stats_ptr=get_diskio_stats(&disks); |
676 |
diskio_stats_diff_ptr=diskio_stats_diff; |
677 |
|
678 |
for(x=0;x<sizeof_diskio_stats_diff;x++){ |
679 |
|
680 |
if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){ |
681 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes; |
682 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes; |
683 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime; |
684 |
}else{ |
685 |
diskio_stats_ptr=diskio_stats; |
686 |
for(y=0;y<disks;y++){ |
687 |
if((strcmp(diskio_stats_diff_ptr->disk_name, diskio_stats_ptr->disk_name))==0){ |
688 |
diskio_stats_diff_ptr->read_bytes=diskio_stats_ptr->read_bytes-diskio_stats_diff_ptr->read_bytes; |
689 |
diskio_stats_diff_ptr->write_bytes=diskio_stats_ptr->write_bytes-diskio_stats_diff_ptr->write_bytes; |
690 |
diskio_stats_diff_ptr->systime=diskio_stats_ptr->systime-diskio_stats_diff_ptr->systime; |
691 |
|
692 |
break; |
693 |
} |
694 |
|
695 |
diskio_stats_ptr++; |
696 |
} |
697 |
} |
698 |
|
699 |
diskio_stats_ptr++; |
700 |
diskio_stats_diff_ptr++; |
701 |
|
702 |
} |
703 |
|
704 |
*entries=sizeof_diskio_stats_diff; |
705 |
return diskio_stats_diff; |
706 |
} |