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Commit | Line | Data |
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aba5acdf SH |
1 | /* |
2 | * rtacct.c Applet to display contents of /proc/net/rt_acct. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <unistd.h> | |
16 | #include <fcntl.h> | |
17 | #include <string.h> | |
18 | #include <errno.h> | |
19 | #include <time.h> | |
20 | #include <sys/time.h> | |
aba5acdf SH |
21 | #include <sys/file.h> |
22 | #include <sys/socket.h> | |
23 | #include <sys/un.h> | |
24 | #include <sys/poll.h> | |
25 | #include <sys/wait.h> | |
26 | #include <sys/stat.h> | |
27 | #include <sys/mman.h> | |
28 | #include <signal.h> | |
29 | #include <math.h> | |
30 | ||
31 | #include "rt_names.h" | |
32 | ||
fbef6555 | 33 | #include "version.h" |
aba5acdf | 34 | |
acd1e437 SH |
35 | int reset_history; |
36 | int ignore_history; | |
37 | int no_output; | |
38 | int no_update; | |
39 | int scan_interval; | |
40 | int time_constant; | |
41 | int dump_zeros; | |
42 | unsigned long magic_number; | |
aba5acdf SH |
43 | double W; |
44 | ||
4ffc44ca | 45 | static int generic_proc_open(const char *env, const char *name) |
aba5acdf SH |
46 | { |
47 | char store[1024]; | |
48 | char *p = getenv(env); | |
acd1e437 | 49 | |
aba5acdf SH |
50 | if (!p) { |
51 | p = getenv("PROC_ROOT") ? : "/proc"; | |
52 | snprintf(store, sizeof(store)-1, "%s/%s", p, name); | |
53 | p = store; | |
54 | } | |
4ffc44ca | 55 | return open(p, O_RDONLY); |
aba5acdf SH |
56 | } |
57 | ||
d1f28cf1 | 58 | static int net_rtacct_open(void) |
aba5acdf SH |
59 | { |
60 | return generic_proc_open("PROC_NET_RTACCT", "net/rt_acct"); | |
61 | } | |
62 | ||
d1f28cf1 | 63 | static __u32 rmap[256/4]; |
aba5acdf | 64 | |
acd1e437 | 65 | struct rtacct_data { |
aba5acdf SH |
66 | __u32 ival[256*4]; |
67 | ||
68 | unsigned long long val[256*4]; | |
69 | double rate[256*4]; | |
737f15f6 | 70 | char signature[128]; |
aba5acdf SH |
71 | }; |
72 | ||
d1f28cf1 | 73 | static struct rtacct_data kern_db_static; |
aba5acdf | 74 | |
d1f28cf1 SH |
75 | static struct rtacct_data *kern_db = &kern_db_static; |
76 | static struct rtacct_data *hist_db; | |
aba5acdf | 77 | |
d1f28cf1 | 78 | static void nread(int fd, char *buf, int tot) |
aba5acdf SH |
79 | { |
80 | int count = 0; | |
81 | ||
82 | while (count < tot) { | |
83 | int n = read(fd, buf+count, tot-count); | |
acd1e437 | 84 | |
aba5acdf SH |
85 | if (n < 0) { |
86 | if (errno == EINTR) | |
87 | continue; | |
88 | exit(-1); | |
89 | } | |
90 | if (n == 0) | |
91 | exit(-1); | |
92 | count += n; | |
93 | } | |
94 | } | |
95 | ||
d1f28cf1 | 96 | static __u32 *read_kern_table(__u32 *tbl) |
aba5acdf SH |
97 | { |
98 | static __u32 *tbl_ptr; | |
99 | int fd; | |
100 | ||
101 | if (magic_number) { | |
102 | if (tbl_ptr != NULL) | |
103 | return tbl_ptr; | |
104 | ||
105 | fd = open("/dev/mem", O_RDONLY); | |
106 | if (fd < 0) { | |
107 | perror("magic open"); | |
108 | exit(-1); | |
109 | } | |
110 | tbl_ptr = mmap(NULL, 4096, | |
111 | PROT_READ, | |
112 | MAP_SHARED, | |
113 | fd, magic_number); | |
114 | if ((unsigned long)tbl_ptr == ~0UL) { | |
115 | perror("magic mmap"); | |
116 | exit(-1); | |
117 | } | |
118 | close(fd); | |
119 | return tbl_ptr; | |
120 | } | |
121 | ||
122 | fd = net_rtacct_open(); | |
123 | if (fd >= 0) { | |
acd1e437 | 124 | nread(fd, (char *)tbl, 256*16); |
aba5acdf SH |
125 | close(fd); |
126 | } else { | |
127 | memset(tbl, 0, 256*16); | |
128 | } | |
129 | return tbl; | |
130 | } | |
131 | ||
d1f28cf1 | 132 | static void format_rate(FILE *fp, double rate) |
aba5acdf SH |
133 | { |
134 | char temp[64]; | |
135 | ||
136 | if (rate > 1024*1024) { | |
acd1e437 | 137 | sprintf(temp, "%uM", (unsigned int)rint(rate/(1024*1024))); |
aba5acdf SH |
138 | fprintf(fp, " %-10s", temp); |
139 | } else if (rate > 1024) { | |
acd1e437 | 140 | sprintf(temp, "%uK", (unsigned int)rint(rate/1024)); |
aba5acdf SH |
141 | fprintf(fp, " %-10s", temp); |
142 | } else | |
acd1e437 | 143 | fprintf(fp, " %-10u", (unsigned int)rate); |
aba5acdf SH |
144 | } |
145 | ||
d1f28cf1 | 146 | static void format_count(FILE *fp, unsigned long long val) |
aba5acdf SH |
147 | { |
148 | if (val > 1024*1024*1024) | |
149 | fprintf(fp, " %10lluM", val/(1024*1024)); | |
150 | else if (val > 1024*1024) | |
151 | fprintf(fp, " %10lluK", val/1024); | |
152 | else | |
153 | fprintf(fp, " %10llu", val); | |
154 | } | |
155 | ||
d1f28cf1 | 156 | static void dump_abs_db(FILE *fp) |
aba5acdf SH |
157 | { |
158 | int realm; | |
159 | char b1[16]; | |
160 | ||
161 | if (!no_output) { | |
162 | fprintf(fp, "#%s\n", kern_db->signature); | |
163 | fprintf(fp, | |
acd1e437 SH |
164 | "%-10s %-10s " |
165 | "%-10s %-10s " | |
166 | "%-10s \n" | |
ae665a52 | 167 | , "Realm", "BytesTo", "PktsTo", "BytesFrom", "PktsFrom"); |
aba5acdf | 168 | fprintf(fp, |
acd1e437 SH |
169 | "%-10s %-10s " |
170 | "%-10s %-10s " | |
171 | "%-10s \n" | |
ae665a52 | 172 | , "", "BPSTo", "PPSTo", "BPSFrom", "PPSFrom"); |
aba5acdf SH |
173 | |
174 | } | |
175 | ||
acd1e437 | 176 | for (realm = 0; realm < 256; realm++) { |
aba5acdf SH |
177 | int i; |
178 | unsigned long long *val; | |
179 | double *rate; | |
180 | ||
181 | if (!(rmap[realm>>5] & (1<<(realm&0x1f)))) | |
182 | continue; | |
183 | ||
184 | val = &kern_db->val[realm*4]; | |
185 | rate = &kern_db->rate[realm*4]; | |
186 | ||
187 | if (!dump_zeros && | |
188 | !val[0] && !rate[0] && | |
189 | !val[1] && !rate[1] && | |
190 | !val[2] && !rate[2] && | |
191 | !val[3] && !rate[3]) | |
192 | continue; | |
193 | ||
194 | if (hist_db) { | |
195 | memcpy(&hist_db->val[realm*4], val, sizeof(*val)*4); | |
196 | } | |
197 | ||
198 | if (no_output) | |
199 | continue; | |
200 | ||
201 | fprintf(fp, "%-10s", rtnl_rtrealm_n2a(realm, b1, sizeof(b1))); | |
202 | for (i = 0; i < 4; i++) | |
ae665a52 | 203 | format_count(fp, val[i]); |
aba5acdf SH |
204 | fprintf(fp, "\n%-10s", ""); |
205 | for (i = 0; i < 4; i++) | |
ae665a52 | 206 | format_rate(fp, rate[i]); |
aba5acdf SH |
207 | fprintf(fp, "\n"); |
208 | } | |
209 | } | |
210 | ||
211 | ||
d1f28cf1 | 212 | static void dump_incr_db(FILE *fp) |
aba5acdf SH |
213 | { |
214 | int k, realm; | |
215 | char b1[16]; | |
216 | ||
217 | if (!no_output) { | |
218 | fprintf(fp, "#%s\n", kern_db->signature); | |
219 | fprintf(fp, | |
acd1e437 SH |
220 | "%-10s %-10s " |
221 | "%-10s %-10s " | |
222 | "%-10s \n" | |
ae665a52 | 223 | , "Realm", "BytesTo", "PktsTo", "BytesFrom", "PktsFrom"); |
aba5acdf | 224 | fprintf(fp, |
acd1e437 SH |
225 | "%-10s %-10s " |
226 | "%-10s %-10s " | |
227 | "%-10s \n" | |
ae665a52 | 228 | , "", "BPSTo", "PPSTo", "BPSFrom", "PPSFrom"); |
aba5acdf SH |
229 | } |
230 | ||
acd1e437 | 231 | for (realm = 0; realm < 256; realm++) { |
aba5acdf SH |
232 | int ovfl = 0; |
233 | int i; | |
234 | unsigned long long *val; | |
235 | double *rate; | |
236 | unsigned long long rval[4]; | |
237 | ||
238 | if (!(rmap[realm>>5] & (1<<(realm&0x1f)))) | |
239 | continue; | |
240 | ||
241 | val = &kern_db->val[realm*4]; | |
242 | rate = &kern_db->rate[realm*4]; | |
243 | ||
acd1e437 | 244 | for (k = 0; k < 4; k++) { |
aba5acdf SH |
245 | rval[k] = val[k]; |
246 | if (rval[k] < hist_db->val[realm*4+k]) | |
247 | ovfl = 1; | |
248 | else | |
249 | rval[k] -= hist_db->val[realm*4+k]; | |
250 | } | |
251 | if (ovfl) { | |
acd1e437 | 252 | for (k = 0; k < 4; k++) |
aba5acdf SH |
253 | rval[k] = val[k]; |
254 | } | |
255 | if (hist_db) { | |
256 | memcpy(&hist_db->val[realm*4], val, sizeof(*val)*4); | |
257 | } | |
258 | ||
259 | if (no_output) | |
260 | continue; | |
261 | ||
262 | if (!dump_zeros && | |
263 | !rval[0] && !rate[0] && | |
264 | !rval[1] && !rate[1] && | |
265 | !rval[2] && !rate[2] && | |
266 | !rval[3] && !rate[3]) | |
267 | continue; | |
268 | ||
269 | ||
270 | fprintf(fp, "%-10s", rtnl_rtrealm_n2a(realm, b1, sizeof(b1))); | |
271 | for (i = 0; i < 4; i++) | |
ae665a52 | 272 | format_count(fp, rval[i]); |
aba5acdf SH |
273 | fprintf(fp, "\n%-10s", ""); |
274 | for (i = 0; i < 4; i++) | |
ae665a52 | 275 | format_rate(fp, rate[i]); |
aba5acdf SH |
276 | fprintf(fp, "\n"); |
277 | } | |
278 | } | |
279 | ||
280 | ||
281 | static int children; | |
282 | ||
d1f28cf1 | 283 | static void sigchild(int signo) |
aba5acdf SH |
284 | { |
285 | } | |
286 | ||
ae665a52 | 287 | /* Server side only: read kernel data, update tables, calculate rates. */ |
aba5acdf | 288 | |
d1f28cf1 | 289 | static void update_db(int interval) |
aba5acdf SH |
290 | { |
291 | int i; | |
292 | __u32 *ival; | |
293 | __u32 _ival[256*4]; | |
294 | ||
295 | ival = read_kern_table(_ival); | |
296 | ||
acd1e437 | 297 | for (i = 0; i < 256*4; i++) { |
aba5acdf SH |
298 | double sample; |
299 | __u32 incr = ival[i] - kern_db->ival[i]; | |
300 | ||
301 | if (ival[i] == 0 && incr == 0 && | |
302 | kern_db->val[i] == 0 && kern_db->rate[i] == 0) | |
303 | continue; | |
304 | ||
305 | kern_db->val[i] += incr; | |
306 | kern_db->ival[i] = ival[i]; | |
307 | sample = (double)(incr*1000)/interval; | |
308 | if (interval >= scan_interval) { | |
309 | kern_db->rate[i] += W*(sample-kern_db->rate[i]); | |
310 | } else if (interval >= 1000) { | |
311 | if (interval >= time_constant) { | |
312 | kern_db->rate[i] = sample; | |
313 | } else { | |
314 | double w = W*(double)interval/scan_interval; | |
acd1e437 | 315 | |
aba5acdf SH |
316 | kern_db->rate[i] += w*(sample-kern_db->rate[i]); |
317 | } | |
318 | } | |
319 | } | |
320 | } | |
321 | ||
d1f28cf1 | 322 | static void send_db(int fd) |
aba5acdf SH |
323 | { |
324 | int tot = 0; | |
325 | ||
326 | while (tot < sizeof(*kern_db)) { | |
acd1e437 SH |
327 | int n = write(fd, ((char *)kern_db) + tot, sizeof(*kern_db)-tot); |
328 | ||
aba5acdf SH |
329 | if (n < 0) { |
330 | if (errno == EINTR) | |
331 | continue; | |
332 | return; | |
333 | } | |
334 | tot += n; | |
335 | } | |
336 | } | |
337 | ||
338 | ||
339 | ||
acd1e437 | 340 | #define T_DIFF(a, b) (((a).tv_sec-(b).tv_sec)*1000 + ((a).tv_usec-(b).tv_usec)/1000) |
aba5acdf SH |
341 | |
342 | ||
d1f28cf1 | 343 | static void pad_kern_table(struct rtacct_data *dat, __u32 *ival) |
aba5acdf SH |
344 | { |
345 | int i; | |
acd1e437 | 346 | |
aba5acdf SH |
347 | memset(dat->rate, 0, sizeof(dat->rate)); |
348 | if (dat->ival != ival) | |
349 | memcpy(dat->ival, ival, sizeof(dat->ival)); | |
acd1e437 | 350 | for (i = 0; i < 256*4; i++) |
aba5acdf SH |
351 | dat->val[i] = ival[i]; |
352 | } | |
353 | ||
d1f28cf1 | 354 | static void server_loop(int fd) |
aba5acdf | 355 | { |
737f15f6 | 356 | struct timeval snaptime = { 0 }; |
aba5acdf | 357 | struct pollfd p; |
acd1e437 | 358 | |
aba5acdf SH |
359 | p.fd = fd; |
360 | p.events = p.revents = POLLIN; | |
361 | ||
ae665a52 | 362 | sprintf(kern_db->signature, |
737f15f6 | 363 | "%u.%lu sampling_interval=%d time_const=%d", |
acd1e437 | 364 | (unsigned int) getpid(), (unsigned long)random(), |
737f15f6 | 365 | scan_interval/1000, time_constant/1000); |
aba5acdf SH |
366 | |
367 | pad_kern_table(kern_db, read_kern_table(kern_db->ival)); | |
368 | ||
369 | for (;;) { | |
370 | int status; | |
371 | int tdiff; | |
372 | struct timeval now; | |
acd1e437 | 373 | |
aba5acdf SH |
374 | gettimeofday(&now, NULL); |
375 | tdiff = T_DIFF(now, snaptime); | |
376 | if (tdiff >= scan_interval) { | |
377 | update_db(tdiff); | |
378 | snaptime = now; | |
379 | tdiff = 0; | |
380 | } | |
381 | if (poll(&p, 1, tdiff + scan_interval) > 0 | |
382 | && (p.revents&POLLIN)) { | |
383 | int clnt = accept(fd, NULL, NULL); | |
acd1e437 | 384 | |
aba5acdf SH |
385 | if (clnt >= 0) { |
386 | pid_t pid; | |
acd1e437 | 387 | |
aba5acdf SH |
388 | if (children >= 5) { |
389 | close(clnt); | |
390 | } else if ((pid = fork()) != 0) { | |
acd1e437 | 391 | if (pid > 0) |
aba5acdf SH |
392 | children++; |
393 | close(clnt); | |
394 | } else { | |
395 | if (tdiff > 0) | |
396 | update_db(tdiff); | |
397 | send_db(clnt); | |
398 | exit(0); | |
399 | } | |
400 | } | |
401 | } | |
402 | while (children && waitpid(-1, &status, WNOHANG) > 0) | |
403 | children--; | |
404 | } | |
405 | } | |
406 | ||
d1f28cf1 | 407 | static int verify_forging(int fd) |
aba5acdf SH |
408 | { |
409 | struct ucred cred; | |
737f15f6 SH |
410 | socklen_t olen = sizeof(cred); |
411 | ||
acd1e437 | 412 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, (void *)&cred, &olen) || |
aba5acdf SH |
413 | olen < sizeof(cred)) |
414 | return -1; | |
415 | if (cred.uid == getuid() || cred.uid == 0) | |
416 | return 0; | |
417 | return -1; | |
418 | } | |
419 | ||
420 | static void usage(void) __attribute__((noreturn)); | |
421 | ||
422 | static void usage(void) | |
423 | { | |
424 | fprintf(stderr, | |
425 | "Usage: rtacct [ -h?vVzrnasd:t: ] [ ListOfRealms ]\n" | |
426 | ); | |
427 | exit(-1); | |
428 | } | |
429 | ||
430 | int main(int argc, char *argv[]) | |
431 | { | |
432 | char hist_name[128]; | |
433 | struct sockaddr_un sun; | |
434 | int ch; | |
435 | int fd; | |
436 | ||
437 | while ((ch = getopt(argc, argv, "h?vVzrM:nasd:t:")) != EOF) { | |
acd1e437 | 438 | switch (ch) { |
aba5acdf SH |
439 | case 'z': |
440 | dump_zeros = 1; | |
441 | break; | |
442 | case 'r': | |
443 | reset_history = 1; | |
444 | break; | |
445 | case 'a': | |
446 | ignore_history = 1; | |
447 | break; | |
448 | case 's': | |
449 | no_update = 1; | |
450 | break; | |
451 | case 'n': | |
452 | no_output = 1; | |
453 | break; | |
454 | case 'd': | |
455 | scan_interval = 1000*atoi(optarg); | |
456 | break; | |
457 | case 't': | |
458 | if (sscanf(optarg, "%d", &time_constant) != 1 || | |
459 | time_constant <= 0) { | |
460 | fprintf(stderr, "rtacct: invalid time constant divisor\n"); | |
461 | exit(-1); | |
462 | } | |
463 | break; | |
464 | case 'v': | |
465 | case 'V': | |
fbef6555 | 466 | printf("rtacct utility, iproute2-%s\n", version); |
aba5acdf SH |
467 | exit(0); |
468 | case 'M': | |
469 | /* Some secret undocumented option, nobody | |
470 | * is expected to ask about its sense. See? | |
471 | */ | |
472 | sscanf(optarg, "%lx", &magic_number); | |
473 | break; | |
474 | case 'h': | |
475 | case '?': | |
476 | default: | |
477 | usage(); | |
478 | } | |
479 | } | |
480 | ||
481 | argc -= optind; | |
482 | argv += optind; | |
483 | ||
484 | if (argc) { | |
485 | while (argc > 0) { | |
486 | __u32 realm; | |
acd1e437 | 487 | |
aba5acdf SH |
488 | if (rtnl_rtrealm_a2n(&realm, argv[0])) { |
489 | fprintf(stderr, "Warning: realm \"%s\" does not exist.\n", argv[0]); | |
490 | exit(-1); | |
491 | } | |
492 | rmap[realm>>5] |= (1<<(realm&0x1f)); | |
493 | argc--; argv++; | |
494 | } | |
495 | } else { | |
496 | memset(rmap, ~0, sizeof(rmap)); | |
497 | /* Always suppress zeros. */ | |
498 | dump_zeros = 0; | |
499 | } | |
500 | ||
501 | sun.sun_family = AF_UNIX; | |
502 | sun.sun_path[0] = 0; | |
503 | sprintf(sun.sun_path+1, "rtacct%d", getuid()); | |
504 | ||
505 | if (scan_interval > 0) { | |
506 | if (time_constant == 0) | |
507 | time_constant = 60; | |
508 | time_constant *= 1000; | |
509 | W = 1 - 1/exp(log(10)*(double)scan_interval/time_constant); | |
510 | if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { | |
511 | perror("rtacct: socket"); | |
512 | exit(-1); | |
513 | } | |
acd1e437 | 514 | if (bind(fd, (struct sockaddr *)&sun, 2+1+strlen(sun.sun_path+1)) < 0) { |
aba5acdf SH |
515 | perror("rtacct: bind"); |
516 | exit(-1); | |
517 | } | |
518 | if (listen(fd, 5) < 0) { | |
519 | perror("rtacct: listen"); | |
520 | exit(-1); | |
521 | } | |
a7a9ddbb MF |
522 | if (daemon(0, 0)) { |
523 | perror("rtacct: daemon"); | |
524 | exit(-1); | |
525 | } | |
aba5acdf SH |
526 | signal(SIGPIPE, SIG_IGN); |
527 | signal(SIGCHLD, sigchild); | |
528 | server_loop(fd); | |
529 | exit(0); | |
530 | } | |
531 | ||
532 | if (getenv("RTACCT_HISTORY")) | |
8988b02e | 533 | snprintf(hist_name, sizeof(hist_name), "%s", getenv("RTACCT_HISTORY")); |
aba5acdf SH |
534 | else |
535 | sprintf(hist_name, "/tmp/.rtacct.u%d", getuid()); | |
536 | ||
537 | if (reset_history) | |
538 | unlink(hist_name); | |
539 | ||
540 | if (!ignore_history || !no_update) { | |
541 | struct stat stb; | |
542 | ||
543 | fd = open(hist_name, O_RDWR|O_CREAT|O_NOFOLLOW, 0600); | |
544 | if (fd < 0) { | |
545 | perror("rtacct: open history file"); | |
546 | exit(-1); | |
547 | } | |
548 | if (flock(fd, LOCK_EX)) { | |
549 | perror("rtacct: flock history file"); | |
550 | exit(-1); | |
551 | } | |
552 | if (fstat(fd, &stb) != 0) { | |
553 | perror("rtacct: fstat history file"); | |
554 | exit(-1); | |
555 | } | |
556 | if (stb.st_nlink != 1 || stb.st_uid != getuid()) { | |
557 | fprintf(stderr, "rtacct: something is so wrong with history file, that I prefer not to proceed.\n"); | |
558 | exit(-1); | |
559 | } | |
560 | if (stb.st_size != sizeof(*hist_db)) | |
8988b02e SH |
561 | if (write(fd, kern_db, sizeof(*hist_db)) < 0) { |
562 | perror("rtacct: write history file"); | |
563 | exit(-1); | |
564 | } | |
aba5acdf SH |
565 | |
566 | hist_db = mmap(NULL, sizeof(*hist_db), | |
567 | PROT_READ|PROT_WRITE, | |
568 | no_update ? MAP_PRIVATE : MAP_SHARED, | |
569 | fd, 0); | |
570 | ||
571 | if ((unsigned long)hist_db == ~0UL) { | |
572 | perror("mmap"); | |
573 | exit(-1); | |
574 | } | |
575 | ||
576 | if (!ignore_history) { | |
577 | FILE *tfp; | |
9a230771 | 578 | long uptime = -1; |
acd1e437 | 579 | |
aba5acdf SH |
580 | if ((tfp = fopen("/proc/uptime", "r")) != NULL) { |
581 | if (fscanf(tfp, "%ld", &uptime) != 1) | |
582 | uptime = -1; | |
583 | fclose(tfp); | |
584 | } | |
585 | ||
586 | if (uptime >= 0 && time(NULL) >= stb.st_mtime+uptime) { | |
587 | fprintf(stderr, "rtacct: history is aged out, resetting\n"); | |
588 | memset(hist_db, 0, sizeof(*hist_db)); | |
589 | } | |
590 | } | |
591 | ||
592 | close(fd); | |
593 | } | |
594 | ||
595 | if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) >= 0 && | |
acd1e437 | 596 | (connect(fd, (struct sockaddr *)&sun, 2+1+strlen(sun.sun_path+1)) == 0 |
aba5acdf | 597 | || (strcpy(sun.sun_path+1, "rtacct0"), |
acd1e437 | 598 | connect(fd, (struct sockaddr *)&sun, 2+1+strlen(sun.sun_path+1)) == 0)) |
aba5acdf | 599 | && verify_forging(fd) == 0) { |
acd1e437 | 600 | nread(fd, (char *)kern_db, sizeof(*kern_db)); |
aba5acdf SH |
601 | if (hist_db && hist_db->signature[0] && |
602 | strcmp(kern_db->signature, hist_db->signature)) { | |
603 | fprintf(stderr, "rtacct: history is stale, ignoring it.\n"); | |
604 | hist_db = NULL; | |
605 | } | |
606 | close(fd); | |
607 | } else { | |
608 | if (fd >= 0) | |
609 | close(fd); | |
610 | ||
611 | if (hist_db && hist_db->signature[0] && | |
612 | strcmp(hist_db->signature, "kernel")) { | |
613 | fprintf(stderr, "rtacct: history is stale, ignoring it.\n"); | |
614 | hist_db = NULL; | |
615 | } | |
616 | ||
617 | pad_kern_table(kern_db, read_kern_table(kern_db->ival)); | |
618 | strcpy(kern_db->signature, "kernel"); | |
619 | } | |
620 | ||
621 | if (ignore_history || hist_db == NULL) | |
622 | dump_abs_db(stdout); | |
623 | else | |
624 | dump_incr_db(stdout); | |
625 | ||
626 | exit(0); | |
627 | } |