| 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; |
| 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 |
< |
struct statinfo stats; |
| 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; |
| 336 |
|
num_diskio=0; |
| 337 |
|
|
| 338 |
|
#ifdef FREEBSD |
| 339 |
< |
stats.dinfo=malloc(sizeof(struct devinfo)); |
| 340 |
< |
if(stats.dinfo==NULL) return NULL; |
| 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 |
|
if ((getdevs(&stats)) < 0) return NULL; |
| 346 |
|
/* Not aware of a get all devices, so i said 999. If we ever |
| 347 |
|
* find a machine with more than 999 disks, then i'll change |
| 371 |
|
num_diskio++; |
| 372 |
|
} |
| 373 |
|
free(dev_sel); |
| 357 |
– |
free(stats.dinfo); |
| 374 |
|
|
| 375 |
|
#endif |
| 376 |
|
#ifdef SOLARIS |
| 409 |
|
#endif |
| 410 |
|
|
| 411 |
|
#ifdef LINUX |
| 412 |
< |
f=fopen("/proc/stat", "r"); |
| 413 |
< |
if(f==NULL){ |
| 414 |
< |
*entries=0; |
| 415 |
< |
fclose(f); |
| 416 |
< |
return NULL; |
| 417 |
< |
} |
| 418 |
< |
if((line_ptr=f_read_line(f, "disk_io:"))==NULL){ |
| 419 |
< |
*entries=0; |
| 420 |
< |
fclose(f); |
| 421 |
< |
return NULL; |
| 422 |
< |
} |
| 423 |
< |
while((line_ptr=strchr(line_ptr, ' '))!=NULL){ |
| 424 |
< |
line_ptr++; |
| 425 |
< |
if(*line_ptr=='\0'){ |
| 426 |
< |
break; |
| 412 |
> |
num_diskio = 0; |
| 413 |
> |
n = 0; |
| 414 |
> |
|
| 415 |
> |
/* Read /proc/partitions to find what devices exist. Recent 2.4 kernels |
| 416 |
> |
have statistics in here too, so we can use those directly. */ |
| 417 |
> |
|
| 418 |
> |
f = fopen("/proc/partitions", "r"); |
| 419 |
> |
if (f == NULL) goto out; |
| 420 |
> |
now = time(NULL); |
| 421 |
> |
|
| 422 |
> |
while ((line_ptr = f_read_line(f, "")) != NULL) { |
| 423 |
> |
char name[20]; |
| 424 |
> |
char *s; |
| 425 |
> |
long long rsect, wsect; |
| 426 |
> |
|
| 427 |
> |
int nr = sscanf(line_ptr, |
| 428 |
> |
" %d %d %*d %19s %*d %*d %lld %*d %*d %*d %lld", |
| 429 |
> |
&major, &minor, name, &rsect, &wsect); |
| 430 |
> |
if (nr < 3) continue; |
| 431 |
> |
if (nr < 5) { |
| 432 |
> |
has_pp_stats = 0; |
| 433 |
> |
rsect = 0; |
| 434 |
> |
wsect = 0; |
| 435 |
|
} |
| 412 |
– |
if((diskio_stats=diskio_stat_malloc(num_diskio+1, &sizeof_diskio_stats, diskio_stats))==NULL){ |
| 413 |
– |
fclose(f); |
| 414 |
– |
*entries=0; |
| 415 |
– |
return NULL; |
| 416 |
– |
} |
| 417 |
– |
diskio_stats_ptr=diskio_stats+num_diskio; |
| 436 |
|
|
| 437 |
+ |
/* Skip device names ending in numbers, since they're |
| 438 |
+ |
partitions. */ |
| 439 |
+ |
s = name; |
| 440 |
+ |
while (*s != '\0') s++; |
| 441 |
+ |
--s; |
| 442 |
+ |
if (*s >= '0' && *s <= '9') continue; |
| 443 |
|
|
| 444 |
< |
if((sscanf(line_ptr, "(%d,%d):(%*d, %*d, %lld, %*d, %lld)", \ |
| 445 |
< |
&major, \ |
| 446 |
< |
&minor, \ |
| 447 |
< |
&diskio_stats_ptr->read_bytes, \ |
| 448 |
< |
&diskio_stats_ptr->write_bytes))!=4) { |
| 449 |
< |
continue; |
| 444 |
> |
diskio_stats = diskio_stat_malloc(n + 1, &sizeof_diskio_stats, |
| 445 |
> |
diskio_stats); |
| 446 |
> |
if (diskio_stats == NULL) goto out; |
| 447 |
> |
if (n >= alloc_parts) { |
| 448 |
> |
alloc_parts += 16; |
| 449 |
> |
parts = realloc(parts, alloc_parts * sizeof *parts); |
| 450 |
> |
if (parts == NULL) { |
| 451 |
> |
alloc_parts = 0; |
| 452 |
> |
goto out; |
| 453 |
> |
} |
| 454 |
|
} |
| 455 |
|
|
| 456 |
< |
/* We read the number of blocks. Blocks are stored in 512 bytes */ |
| 457 |
< |
diskio_stats_ptr->read_bytes=diskio_stats_ptr->read_bytes*512; |
| 458 |
< |
diskio_stats_ptr->write_bytes=diskio_stats_ptr->write_bytes*512; |
| 456 |
> |
if (diskio_stats[n].disk_name != NULL) |
| 457 |
> |
free(diskio_stats[n].disk_name); |
| 458 |
> |
diskio_stats[n].disk_name = strdup(name); |
| 459 |
> |
diskio_stats[n].read_bytes = rsect * 512; |
| 460 |
> |
diskio_stats[n].write_bytes = wsect * 512; |
| 461 |
> |
diskio_stats[n].systime = now; |
| 462 |
> |
parts[n].major = major; |
| 463 |
> |
parts[n].minor = minor; |
| 464 |
|
|
| 465 |
< |
if(diskio_stats_ptr->disk_name!=NULL) free(diskio_stats_ptr->disk_name); |
| 465 |
> |
n++; |
| 466 |
> |
} |
| 467 |
|
|
| 468 |
< |
switch(major){ |
| 469 |
< |
case 2: |
| 470 |
< |
if(minor==0){ |
| 437 |
< |
diskio_stats_ptr->disk_name=strdup("fd0"); |
| 438 |
< |
} |
| 439 |
< |
break; |
| 468 |
> |
if (!has_pp_stats) { |
| 469 |
> |
/* This is an older kernel without stats in /proc/partitions. |
| 470 |
> |
Read what we can from /proc/stat instead. */ |
| 471 |
|
|
| 472 |
< |
case 3: |
| 473 |
< |
if(minor==0){ |
| 474 |
< |
diskio_stats_ptr->disk_name=strdup("hda"); |
| 475 |
< |
}else{ |
| 476 |
< |
diskio_stats_ptr->disk_name=strdup("hdb"); |
| 477 |
< |
} |
| 478 |
< |
break; |
| 472 |
> |
f = fopen("/proc/stat", "r"); |
| 473 |
> |
if (f == NULL) goto out; |
| 474 |
> |
now = time(NULL); |
| 475 |
> |
|
| 476 |
> |
line_ptr = f_read_line(f, "disk_io:"); |
| 477 |
> |
if (line_ptr == NULL) goto out; |
| 478 |
> |
|
| 479 |
> |
while((line_ptr=strchr(line_ptr, ' '))!=NULL){ |
| 480 |
> |
long long rsect, wsect; |
| 481 |
|
|
| 482 |
+ |
if (*++line_ptr == '\0') break; |
| 483 |
+ |
|
| 484 |
+ |
if((sscanf(line_ptr, |
| 485 |
+ |
"(%d,%d):(%*d, %*d, %lld, %*d, %lld)", |
| 486 |
+ |
&major, &minor, &rsect, &wsect)) != 4) { |
| 487 |
+ |
continue; |
| 488 |
+ |
} |
| 489 |
+ |
|
| 490 |
+ |
/* Find the corresponding device from earlier. |
| 491 |
+ |
Just to add to the fun, "minor" is actually the disk |
| 492 |
+ |
number, not the device minor, so we need to figure |
| 493 |
+ |
out the real minor number based on the major! |
| 494 |
+ |
This list is not exhaustive; if you're running |
| 495 |
+ |
an older kernel you probably don't have fancy |
| 496 |
+ |
I2O hardware anyway... */ |
| 497 |
+ |
switch (major) { |
| 498 |
+ |
case 3: |
| 499 |
+ |
case 21: |
| 500 |
|
case 22: |
| 501 |
< |
if(minor==0){ |
| 502 |
< |
diskio_stats_ptr->disk_name=strdup("hdc"); |
| 503 |
< |
}else{ |
| 504 |
< |
diskio_stats_ptr->disk_name=strdup("hdd"); |
| 505 |
< |
} |
| 501 |
> |
case 33: |
| 502 |
> |
case 34: |
| 503 |
> |
case 36: |
| 504 |
> |
case 56: |
| 505 |
> |
case 57: |
| 506 |
> |
case 88: |
| 507 |
> |
case 89: |
| 508 |
> |
case 90: |
| 509 |
> |
case 91: |
| 510 |
> |
minor *= 64; |
| 511 |
|
break; |
| 512 |
< |
case 8: |
| 513 |
< |
dev_letter='a'+(minor/16); |
| 458 |
< |
diskio_stats_ptr->disk_name=malloc(4); |
| 459 |
< |
snprintf(diskio_stats_ptr->disk_name, 4, "sd%c", dev_letter); |
| 512 |
> |
case 9: |
| 513 |
> |
case 43: |
| 514 |
|
break; |
| 515 |
|
default: |
| 516 |
< |
/* I have no idea what it is then :) */ |
| 463 |
< |
diskio_stats_ptr->disk_name=malloc(16); |
| 464 |
< |
snprintf(diskio_stats_ptr->disk_name, 16, "%d %d", major, minor); |
| 516 |
> |
minor *= 16; |
| 517 |
|
break; |
| 518 |
< |
} |
| 518 |
> |
} |
| 519 |
> |
for (i = 0; i < n; i++) { |
| 520 |
> |
if (major == parts[i].major |
| 521 |
> |
&& minor == parts[i].minor) |
| 522 |
> |
break; |
| 523 |
> |
} |
| 524 |
> |
if (i == n) continue; |
| 525 |
|
|
| 526 |
< |
diskio_stats_ptr->systime=time(NULL); |
| 527 |
< |
num_diskio++; |
| 526 |
> |
/* We read the number of blocks. Blocks are stored in |
| 527 |
> |
512 bytes */ |
| 528 |
> |
diskio_stats[i].read_bytes = rsect * 512; |
| 529 |
> |
diskio_stats[i].write_bytes = wsect * 512; |
| 530 |
> |
diskio_stats[i].systime = now; |
| 531 |
> |
} |
| 532 |
|
} |
| 533 |
|
|
| 534 |
< |
fclose(f); |
| 534 |
> |
num_diskio = n; |
| 535 |
> |
out: |
| 536 |
> |
if (f != NULL) fclose(f); |
| 537 |
|
|
| 538 |
|
#endif |
| 539 |
|
*entries=num_diskio; |
