| 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 |
#include <statgrab.h> |
| 22 |
#include <string.h> |
| 23 |
#include <stdio.h> |
| 24 |
#include <stdarg.h> |
| 25 |
#include <stdlib.h> |
| 26 |
#include <unistd.h> |
| 27 |
|
| 28 |
typedef enum { |
| 29 |
LONG_LONG = 0, |
| 30 |
TIME_T, |
| 31 |
FLOAT, |
| 32 |
DOUBLE, |
| 33 |
STRING, |
| 34 |
INT |
| 35 |
} stat_type; |
| 36 |
|
| 37 |
typedef enum { |
| 38 |
DISPLAY_LINUX = 0, |
| 39 |
DISPLAY_BSD, |
| 40 |
DISPLAY_MRTG, |
| 41 |
DISPLAY_PLAIN |
| 42 |
} display_mode_type; |
| 43 |
|
| 44 |
typedef enum { |
| 45 |
REPEAT_NONE = 0, |
| 46 |
REPEAT_ONCE, |
| 47 |
REPEAT_FOREVER |
| 48 |
} repeat_mode_type; |
| 49 |
|
| 50 |
typedef struct { |
| 51 |
char *name; |
| 52 |
stat_type type; |
| 53 |
void *stat; |
| 54 |
} stat; |
| 55 |
|
| 56 |
stat *stats = NULL; |
| 57 |
int num_stats = 0; |
| 58 |
int alloc_stats = 0; |
| 59 |
#define INCREMENT_STATS 64 |
| 60 |
|
| 61 |
display_mode_type display_mode = DISPLAY_LINUX; |
| 62 |
repeat_mode_type repeat_mode = REPEAT_NONE; |
| 63 |
int repeat_time = 1; |
| 64 |
int use_cpu_percent = 0; |
| 65 |
|
| 66 |
/* Exit with an error message. */ |
| 67 |
void die(const char *s) { |
| 68 |
fprintf(stderr, "fatal: %s\n", s); |
| 69 |
exit(1); |
| 70 |
} |
| 71 |
|
| 72 |
/* Remove all the recorded stats. */ |
| 73 |
void clear_stats() { |
| 74 |
int i; |
| 75 |
|
| 76 |
for (i = 0; i < num_stats; i++) |
| 77 |
free(stats[i].name); |
| 78 |
free(stats); |
| 79 |
stats = NULL; |
| 80 |
num_stats = 0; |
| 81 |
alloc_stats = 0; |
| 82 |
} |
| 83 |
|
| 84 |
/* Add a stat. The varargs make up the name, joined with dots; the name is |
| 85 |
terminated with a NULL. */ |
| 86 |
void add_stat(stat_type type, void *stat, ...) { |
| 87 |
va_list ap; |
| 88 |
int len = 0; |
| 89 |
char *name, *p; |
| 90 |
|
| 91 |
/* Figure out how long the name will be, including dots and trailing |
| 92 |
\0. */ |
| 93 |
va_start(ap, stat); |
| 94 |
while (1) { |
| 95 |
const char *part = va_arg(ap, const char *); |
| 96 |
if (part == NULL) |
| 97 |
break; |
| 98 |
len += 1 + strlen(part); |
| 99 |
} |
| 100 |
va_end(ap); |
| 101 |
|
| 102 |
/* Paste the name together. */ |
| 103 |
name = malloc(len); |
| 104 |
if (name == NULL) |
| 105 |
die("out of memory"); |
| 106 |
p = name; |
| 107 |
va_start(ap, stat); |
| 108 |
while (1) { |
| 109 |
const char *part = va_arg(ap, const char *); |
| 110 |
int partlen; |
| 111 |
if (part == NULL) |
| 112 |
break; |
| 113 |
partlen = strlen(part); |
| 114 |
memcpy(p, part, partlen); |
| 115 |
p += partlen; |
| 116 |
*p++ = '.'; |
| 117 |
} |
| 118 |
va_end(ap); |
| 119 |
*--p = '\0'; |
| 120 |
|
| 121 |
/* Replace spaces with underscores. */ |
| 122 |
for (p = name; *p != '\0'; p++) { |
| 123 |
if (*p == ' ') |
| 124 |
*p = '_'; |
| 125 |
} |
| 126 |
|
| 127 |
/* Stretch the stats array if necessary. */ |
| 128 |
if (num_stats >= alloc_stats) { |
| 129 |
alloc_stats += INCREMENT_STATS; |
| 130 |
stats = realloc(stats, alloc_stats * sizeof *stats); |
| 131 |
if (stats == NULL) |
| 132 |
die("out of memory"); |
| 133 |
} |
| 134 |
|
| 135 |
stats[num_stats].name = name; |
| 136 |
stats[num_stats].type = type; |
| 137 |
stats[num_stats].stat = stat; |
| 138 |
++num_stats; |
| 139 |
} |
| 140 |
|
| 141 |
/* Compare two stats by name, for sorting purposes. */ |
| 142 |
int stats_compare(const void *a, const void *b) { |
| 143 |
return strcmp(((stat *)a)->name, ((stat *)b)->name); |
| 144 |
} |
| 145 |
|
| 146 |
/* Clear and rebuild the stats array. */ |
| 147 |
void get_stats(int use_diffs) { |
| 148 |
cpu_states_t *cpu_s; |
| 149 |
cpu_percent_t *cpu_p; |
| 150 |
mem_stat_t *mem; |
| 151 |
load_stat_t *load; |
| 152 |
user_stat_t *user; |
| 153 |
swap_stat_t *swap; |
| 154 |
general_stat_t *gen; |
| 155 |
disk_stat_t *disk; |
| 156 |
diskio_stat_t *diskio; |
| 157 |
process_stat_t *proc; |
| 158 |
network_stat_t *net; |
| 159 |
page_stat_t *page; |
| 160 |
static int zero = 0; |
| 161 |
int n, i; |
| 162 |
|
| 163 |
clear_stats(); |
| 164 |
|
| 165 |
/* Constants, for use with MRTG mode. */ |
| 166 |
add_stat(INT, &zero, "const", "0", NULL); |
| 167 |
|
| 168 |
/* FIXME when only fetching some stats, it'd be more efficient to only |
| 169 |
do the libstatgrab calls needed, rather than fetching everything. */ |
| 170 |
|
| 171 |
if (use_cpu_percent) { |
| 172 |
cpu_p = cpu_percent_usage(); |
| 173 |
if (cpu_p != NULL) { |
| 174 |
add_stat(FLOAT, &cpu_p->user, |
| 175 |
"cpu", "user", NULL); |
| 176 |
add_stat(FLOAT, &cpu_p->kernel, |
| 177 |
"cpu", "kernel", NULL); |
| 178 |
add_stat(FLOAT, &cpu_p->idle, |
| 179 |
"cpu", "idle", NULL); |
| 180 |
add_stat(FLOAT, &cpu_p->iowait, |
| 181 |
"cpu", "iowait", NULL); |
| 182 |
add_stat(FLOAT, &cpu_p->swap, |
| 183 |
"cpu", "swap", NULL); |
| 184 |
add_stat(FLOAT, &cpu_p->nice, |
| 185 |
"cpu", "nice", NULL); |
| 186 |
add_stat(TIME_T, &cpu_s->systime, |
| 187 |
"cpu", "time_taken", NULL); |
| 188 |
} |
| 189 |
} else { |
| 190 |
cpu_s = use_diffs ? get_cpu_diff() : get_cpu_totals(); |
| 191 |
if (cpu_s != NULL) { |
| 192 |
add_stat(LONG_LONG, &cpu_s->user, |
| 193 |
"cpu", "user", NULL); |
| 194 |
add_stat(LONG_LONG, &cpu_s->kernel, |
| 195 |
"cpu", "kernel", NULL); |
| 196 |
add_stat(LONG_LONG, &cpu_s->idle, |
| 197 |
"cpu", "idle", NULL); |
| 198 |
add_stat(LONG_LONG, &cpu_s->iowait, |
| 199 |
"cpu", "iowait", NULL); |
| 200 |
add_stat(LONG_LONG, &cpu_s->swap, |
| 201 |
"cpu", "swap", NULL); |
| 202 |
add_stat(LONG_LONG, &cpu_s->nice, |
| 203 |
"cpu", "nice", NULL); |
| 204 |
add_stat(LONG_LONG, &cpu_s->total, |
| 205 |
"cpu", "total", NULL); |
| 206 |
add_stat(TIME_T, &cpu_s->systime, |
| 207 |
"cpu", "systime", NULL); |
| 208 |
} |
| 209 |
} |
| 210 |
|
| 211 |
mem = get_memory_stats(); |
| 212 |
if (mem != NULL) { |
| 213 |
add_stat(LONG_LONG, &mem->total, "mem", "total", NULL); |
| 214 |
add_stat(LONG_LONG, &mem->free, "mem", "free", NULL); |
| 215 |
add_stat(LONG_LONG, &mem->used, "mem", "used", NULL); |
| 216 |
add_stat(LONG_LONG, &mem->cache, "mem", "cache", NULL); |
| 217 |
} |
| 218 |
|
| 219 |
load = get_load_stats(); |
| 220 |
if (load != NULL) { |
| 221 |
add_stat(DOUBLE, &load->min1, "load", "min1", NULL); |
| 222 |
add_stat(DOUBLE, &load->min5, "load", "min5", NULL); |
| 223 |
add_stat(DOUBLE, &load->min15, "load", "min15", NULL); |
| 224 |
} |
| 225 |
|
| 226 |
user = get_user_stats(); |
| 227 |
if (user != NULL) { |
| 228 |
add_stat(INT, &user->num_entries, "user", "num", NULL); |
| 229 |
add_stat(STRING, &user->name_list, "user", "names", NULL); |
| 230 |
} |
| 231 |
|
| 232 |
swap = get_swap_stats(); |
| 233 |
if (swap != NULL) { |
| 234 |
add_stat(LONG_LONG, &swap->total, "swap", "total", NULL); |
| 235 |
add_stat(LONG_LONG, &swap->used, "swap", "used", NULL); |
| 236 |
add_stat(LONG_LONG, &swap->free, "swap", "free", NULL); |
| 237 |
} |
| 238 |
|
| 239 |
gen = get_general_stats(); |
| 240 |
if (gen != NULL) { |
| 241 |
add_stat(STRING, &gen->os_name, |
| 242 |
"general", "os_name", NULL); |
| 243 |
add_stat(STRING, &gen->os_release, |
| 244 |
"general", "os_release", NULL); |
| 245 |
add_stat(STRING, &gen->os_version, |
| 246 |
"general", "os_version", NULL); |
| 247 |
add_stat(STRING, &gen->platform, "general", "platform", NULL); |
| 248 |
add_stat(STRING, &gen->hostname, "general", "hostname", NULL); |
| 249 |
add_stat(TIME_T, &gen->uptime, "general", "uptime", NULL); |
| 250 |
} |
| 251 |
|
| 252 |
disk = get_disk_stats(&n); |
| 253 |
if (disk != NULL) { |
| 254 |
for (i = 0; i < n; i++) { |
| 255 |
/* FIXME it'd be nicer if libstatgrab did this */ |
| 256 |
const char *name = disk[i].device_name, |
| 257 |
*p = strrchr(name, '/'); |
| 258 |
if (p != NULL) |
| 259 |
name = p + 1; |
| 260 |
if (*name == '\0') |
| 261 |
name = "root"; |
| 262 |
|
| 263 |
add_stat(STRING, &disk[i].device_name, |
| 264 |
"fs", name, "device_name", NULL); |
| 265 |
add_stat(STRING, &disk[i].fs_type, |
| 266 |
"fs", name, "fs_type", NULL); |
| 267 |
add_stat(STRING, &disk[i].mnt_point, |
| 268 |
"fs", name, "mnt_point", NULL); |
| 269 |
add_stat(LONG_LONG, &disk[i].size, |
| 270 |
"fs", name, "size", NULL); |
| 271 |
add_stat(LONG_LONG, &disk[i].used, |
| 272 |
"fs", name, "used", NULL); |
| 273 |
add_stat(LONG_LONG, &disk[i].avail, |
| 274 |
"fs", name, "avail", NULL); |
| 275 |
add_stat(LONG_LONG, &disk[i].total_inodes, |
| 276 |
"fs", name, "total_inodes", NULL); |
| 277 |
add_stat(LONG_LONG, &disk[i].used_inodes, |
| 278 |
"fs", name, "used_inodes", NULL); |
| 279 |
add_stat(LONG_LONG, &disk[i].free_inodes, |
| 280 |
"fs", name, "free_inodes", NULL); |
| 281 |
} |
| 282 |
} |
| 283 |
|
| 284 |
diskio = use_diffs ? get_diskio_stats_diff(&n) : get_diskio_stats(&n); |
| 285 |
if (diskio != NULL) { |
| 286 |
for (i = 0; i < n; i++) { |
| 287 |
const char *name = diskio[i].disk_name; |
| 288 |
|
| 289 |
add_stat(STRING, &diskio[i].disk_name, |
| 290 |
"disk", name, "disk_name", NULL); |
| 291 |
add_stat(LONG_LONG, &diskio[i].read_bytes, |
| 292 |
"disk", name, "read_bytes", NULL); |
| 293 |
add_stat(LONG_LONG, &diskio[i].write_bytes, |
| 294 |
"disk", name, "write_bytes", NULL); |
| 295 |
add_stat(TIME_T, &diskio[i].systime, |
| 296 |
"disk", name, "systime", NULL); |
| 297 |
} |
| 298 |
} |
| 299 |
|
| 300 |
proc = get_process_stats(); |
| 301 |
if (proc != NULL) { |
| 302 |
add_stat(INT, &proc->total, "proc", "total", NULL); |
| 303 |
add_stat(INT, &proc->running, "proc", "running", NULL); |
| 304 |
add_stat(INT, &proc->sleeping, "proc", "sleeping", NULL); |
| 305 |
add_stat(INT, &proc->stopped, "proc", "stopped", NULL); |
| 306 |
add_stat(INT, &proc->zombie, "proc", "zombie", NULL); |
| 307 |
} |
| 308 |
|
| 309 |
net = use_diffs ? get_network_stats_diff(&n) : get_network_stats(&n); |
| 310 |
if (net != NULL) { |
| 311 |
for (i = 0; i < n; i++) { |
| 312 |
const char *name = net[i].interface_name; |
| 313 |
|
| 314 |
add_stat(STRING, &net[i].interface_name, |
| 315 |
"net", name, "interface_name", NULL); |
| 316 |
add_stat(LONG_LONG, &net[i].tx, |
| 317 |
"net", name, "tx", NULL); |
| 318 |
add_stat(LONG_LONG, &net[i].rx, |
| 319 |
"net", name, "rx", NULL); |
| 320 |
add_stat(TIME_T, &net[i].systime, |
| 321 |
"net", name, "systime", NULL); |
| 322 |
} |
| 323 |
} |
| 324 |
|
| 325 |
page = use_diffs ? get_page_stats_diff() : get_page_stats(); |
| 326 |
if (page != NULL) { |
| 327 |
add_stat(LONG_LONG, &page->pages_pagein, "page", "in", NULL); |
| 328 |
add_stat(LONG_LONG, &page->pages_pageout, "page", "out", NULL); |
| 329 |
add_stat(LONG_LONG, &page->systime, "page", "systime", NULL); |
| 330 |
} |
| 331 |
|
| 332 |
qsort(stats, num_stats, sizeof *stats, stats_compare); |
| 333 |
} |
| 334 |
|
| 335 |
/* Print the value of a stat. */ |
| 336 |
void print_stat_value(const stat *s) { |
| 337 |
void *v = s->stat; |
| 338 |
|
| 339 |
switch (s->type) { |
| 340 |
case LONG_LONG: |
| 341 |
printf("%lld", *(long long *)v); |
| 342 |
break; |
| 343 |
case TIME_T: |
| 344 |
/* FIXME option for formatted time? */ |
| 345 |
printf("%ld", *(time_t *)v); |
| 346 |
break; |
| 347 |
case FLOAT: |
| 348 |
printf("%f", *(float *)v); |
| 349 |
break; |
| 350 |
case DOUBLE: |
| 351 |
printf("%f", *(double *)v); |
| 352 |
break; |
| 353 |
case STRING: |
| 354 |
/* FIXME escaping? */ |
| 355 |
printf("%s", *(char **)v); |
| 356 |
break; |
| 357 |
case INT: |
| 358 |
printf("%d", *(int *)v); |
| 359 |
break; |
| 360 |
} |
| 361 |
} |
| 362 |
|
| 363 |
/* Print the name and value of a stat. */ |
| 364 |
void print_stat(const stat *s) { |
| 365 |
switch (display_mode) { |
| 366 |
case DISPLAY_LINUX: |
| 367 |
printf("%s = ", s->name); |
| 368 |
break; |
| 369 |
case DISPLAY_BSD: |
| 370 |
printf("%s: ", s->name); |
| 371 |
break; |
| 372 |
case DISPLAY_MRTG: |
| 373 |
case DISPLAY_PLAIN: |
| 374 |
break; |
| 375 |
} |
| 376 |
print_stat_value(s); |
| 377 |
printf("\n"); |
| 378 |
} |
| 379 |
|
| 380 |
/* Print stats as specified on the provided command line. */ |
| 381 |
void print_stats(int argc, char **argv) { |
| 382 |
int i; |
| 383 |
|
| 384 |
if (argc == optind) { |
| 385 |
/* Print all stats. */ |
| 386 |
for (i = 0; i < num_stats; i++) |
| 387 |
print_stat(&stats[i]); |
| 388 |
} else { |
| 389 |
/* Print selected stats. */ |
| 390 |
for (i = optind; i < argc; i++) { |
| 391 |
stat key; |
| 392 |
const stat *s; |
| 393 |
|
| 394 |
key.name = argv[i]; |
| 395 |
s = (const stat *)bsearch(&key, stats, num_stats, |
| 396 |
sizeof *stats, |
| 397 |
stats_compare); |
| 398 |
if (s != NULL) { |
| 399 |
print_stat(s); |
| 400 |
} |
| 401 |
} |
| 402 |
} |
| 403 |
} |
| 404 |
|
| 405 |
void usage() { |
| 406 |
printf("Usage: statgrab [OPTION]... [STAT]...\n" |
| 407 |
"Display system statistics (all statistics by default).\n" |
| 408 |
"\n"); |
| 409 |
printf(" -l Linux sysctl-style output (default)\n" |
| 410 |
" -b BSD sysctl-style output\n" |
| 411 |
" -m MRTG-compatible output\n" |
| 412 |
" -u Plain output (only show values)\n" |
| 413 |
" -n Display cumulative stats once (default)\n" |
| 414 |
" -s Display stat differences repeatedly\n" |
| 415 |
" -o Display stat differences once\n" |
| 416 |
" -t DELAY When repeating, wait DELAY seconds between updates (default 1)\n" |
| 417 |
" -p Display CPU usage as percentages rather than absolute values\n" |
| 418 |
"\n"); |
| 419 |
printf("Report bugs to <bugs@i-scream.org>.\n"); |
| 420 |
exit(1); |
| 421 |
} |
| 422 |
|
| 423 |
int main(int argc, char **argv) { |
| 424 |
opterr = 0; |
| 425 |
while (1) { |
| 426 |
int c = getopt(argc, argv, "lbmunsot:p"); |
| 427 |
if (c == -1) |
| 428 |
break; |
| 429 |
switch (c) { |
| 430 |
case 'l': |
| 431 |
display_mode = DISPLAY_LINUX; |
| 432 |
break; |
| 433 |
case 'b': |
| 434 |
display_mode = DISPLAY_BSD; |
| 435 |
break; |
| 436 |
case 'm': |
| 437 |
display_mode = DISPLAY_MRTG; |
| 438 |
break; |
| 439 |
case 'u': |
| 440 |
display_mode = DISPLAY_PLAIN; |
| 441 |
break; |
| 442 |
case 'n': |
| 443 |
repeat_mode = REPEAT_NONE; |
| 444 |
break; |
| 445 |
case 's': |
| 446 |
repeat_mode = REPEAT_FOREVER; |
| 447 |
break; |
| 448 |
case 'o': |
| 449 |
repeat_mode = REPEAT_ONCE; |
| 450 |
break; |
| 451 |
case 't': |
| 452 |
repeat_time = atoi(optarg); |
| 453 |
break; |
| 454 |
case 'p': |
| 455 |
use_cpu_percent = 1; |
| 456 |
break; |
| 457 |
default: |
| 458 |
usage(); |
| 459 |
} |
| 460 |
} |
| 461 |
|
| 462 |
if (display_mode == DISPLAY_MRTG) { |
| 463 |
if ((argc - optind) != 2) |
| 464 |
die("mrtg mode: must specify exactly two stats"); |
| 465 |
if (repeat_mode != REPEAT_NONE) |
| 466 |
die("mrtg mode: cannot repeat display"); |
| 467 |
} |
| 468 |
|
| 469 |
switch (repeat_mode) { |
| 470 |
case REPEAT_NONE: |
| 471 |
get_stats(0); |
| 472 |
print_stats(argc, argv); |
| 473 |
break; |
| 474 |
case REPEAT_ONCE: |
| 475 |
get_stats(1); |
| 476 |
sleep(repeat_time); |
| 477 |
get_stats(1); |
| 478 |
print_stats(argc, argv); |
| 479 |
break; |
| 480 |
case REPEAT_FOREVER: |
| 481 |
while (1) { |
| 482 |
get_stats(1); |
| 483 |
print_stats(argc, argv); |
| 484 |
printf("\n"); |
| 485 |
sleep(repeat_time); |
| 486 |
} |
| 487 |
} |
| 488 |
|
| 489 |
if (display_mode == DISPLAY_MRTG) { |
| 490 |
printf("\n"); |
| 491 |
printf("statgrab\n"); |
| 492 |
} |
| 493 |
|
| 494 |
return 0; |
| 495 |
} |
| 496 |
|
