Deleted Added
sdiff udiff text old ( 187214 ) new ( 189279 )
full compact
auditd_lib.c (187214) auditd_lib.c (189279)
1/*-
1/*-
2 * Copyright (c) 2008 Apple Inc.
2 * Copyright (c) 2008-2009 Apple Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright

--- 10 unchanged lines hidden (view full) ---

21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 *
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright

--- 10 unchanged lines hidden (view full) ---

21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 *
29 * $P4: //depot/projects/trustedbsd/openbsm/libauditd/auditd_lib.c#2 $
29 * $P4: //depot/projects/trustedbsd/openbsm/libauditd/auditd_lib.c#7 $
30 */
31
32#include <sys/param.h>
33
34#include <config/config.h>
35
36#include <sys/dirent.h>
37#include <sys/mount.h>

--- 9 unchanged lines hidden (view full) ---

47
48#include <netinet/in.h>
49
50#include <bsm/audit.h>
51#include <bsm/audit_uevents.h>
52#include <bsm/auditd_lib.h>
53#include <bsm/libbsm.h>
54
30 */
31
32#include <sys/param.h>
33
34#include <config/config.h>
35
36#include <sys/dirent.h>
37#include <sys/mount.h>

--- 9 unchanged lines hidden (view full) ---

47
48#include <netinet/in.h>
49
50#include <bsm/audit.h>
51#include <bsm/audit_uevents.h>
52#include <bsm/auditd_lib.h>
53#include <bsm/libbsm.h>
54
55#include <dirent.h>
55#include <err.h>
56#include <errno.h>
57#include <fcntl.h>
58#include <stdio.h>
59#include <string.h>
60#include <stdlib.h>
61#include <time.h>
62#include <unistd.h>

--- 9 unchanged lines hidden (view full) ---

72/*
73 * XXX This is temporary until this is moved to <bsm/audit.h> and shared with
74 * the kernel.
75 */
76#ifndef AUDIT_HARD_LIMIT_FREE_BLOCKS
77#define AUDIT_HARD_LIMIT_FREE_BLOCKS 4
78#endif
79
56#include <err.h>
57#include <errno.h>
58#include <fcntl.h>
59#include <stdio.h>
60#include <string.h>
61#include <stdlib.h>
62#include <time.h>
63#include <unistd.h>

--- 9 unchanged lines hidden (view full) ---

73/*
74 * XXX This is temporary until this is moved to <bsm/audit.h> and shared with
75 * the kernel.
76 */
77#ifndef AUDIT_HARD_LIMIT_FREE_BLOCKS
78#define AUDIT_HARD_LIMIT_FREE_BLOCKS 4
79#endif
80
81/*
82 * Number of seconds to January 1, 2000
83 */
84#define JAN_01_2000 946598400
85
80struct dir_ent {
81 char *dirname;
82 uint8_t softlim;
83 uint8_t hardlim;
84 TAILQ_ENTRY(dir_ent) dirs;
85};
86
87static TAILQ_HEAD(, dir_ent) dir_q;
86struct dir_ent {
87 char *dirname;
88 uint8_t softlim;
89 uint8_t hardlim;
90 TAILQ_ENTRY(dir_ent) dirs;
91};
92
93static TAILQ_HEAD(, dir_ent) dir_q;
88static int minval = -1;
89
94
95struct audit_trail {
96 time_t at_time;
97 char *at_path;
98 off_t at_size;
99
100 TAILQ_ENTRY(audit_trail) at_trls;
101};
102
103static int auditd_minval = -1;
104
105static char auditd_host[MAXHOSTNAMELEN];
106static int auditd_hostlen = -1;
107
90static char *auditd_errmsg[] = {
91 "no error", /* ADE_NOERR ( 0) */
92 "could not parse audit_control(5) file", /* ADE_PARSE ( 1) */
93 "auditon(2) failed", /* ADE_AUDITON ( 2) */
94 "malloc(3) failed", /* ADE_NOMEM ( 3) */
95 "all audit log directories over soft limit", /* ADE_SOFTLIM ( 4) */
96 "all audit log directories over hard limit", /* ADE_HARDLIM ( 5) */
97 "could not create file name string", /* ADE_STRERR ( 6) */

--- 4 unchanged lines hidden (view full) ---

102 "auditctl(2) failed (trail not swapped)", /* ADE_ACTLERR (11) */
103 "could not swap audit trail file", /* ADE_SWAPERR (12) */
104 "could not rename crash recovery file", /* ADE_RENAME (13) */
105 "could not read 'current' link file", /* ADE_READLINK (14) */
106 "could not create 'current' link file", /* ADE_SYMLINK (15) */
107 "invalid argument", /* ADE_INVAL (16) */
108 "could not resolve hostname to address", /* ADE_GETADDR (17) */
109 "address family not supported", /* ADE_ADDRFAM (18) */
108static char *auditd_errmsg[] = {
109 "no error", /* ADE_NOERR ( 0) */
110 "could not parse audit_control(5) file", /* ADE_PARSE ( 1) */
111 "auditon(2) failed", /* ADE_AUDITON ( 2) */
112 "malloc(3) failed", /* ADE_NOMEM ( 3) */
113 "all audit log directories over soft limit", /* ADE_SOFTLIM ( 4) */
114 "all audit log directories over hard limit", /* ADE_HARDLIM ( 5) */
115 "could not create file name string", /* ADE_STRERR ( 6) */

--- 4 unchanged lines hidden (view full) ---

120 "auditctl(2) failed (trail not swapped)", /* ADE_ACTLERR (11) */
121 "could not swap audit trail file", /* ADE_SWAPERR (12) */
122 "could not rename crash recovery file", /* ADE_RENAME (13) */
123 "could not read 'current' link file", /* ADE_READLINK (14) */
124 "could not create 'current' link file", /* ADE_SYMLINK (15) */
125 "invalid argument", /* ADE_INVAL (16) */
126 "could not resolve hostname to address", /* ADE_GETADDR (17) */
127 "address family not supported", /* ADE_ADDRFAM (18) */
128 "error expiring audit trail files", /* ADE_EXPIRE (19) */
110};
111
112#define MAXERRCODE (sizeof(auditd_errmsg) / sizeof(auditd_errmsg[0]))
113
114#define NA_EVENT_STR_SIZE 25
115#define POL_STR_SIZE 128
116
117

--- 42 unchanged lines hidden (view full) ---

160 /*
161 * Sanity check on file name.
162 */
163 if (strlen(name) != (FILENAME_LEN - 1)) {
164 errno = EINVAL;
165 return (NULL);
166 }
167
129};
130
131#define MAXERRCODE (sizeof(auditd_errmsg) / sizeof(auditd_errmsg[0]))
132
133#define NA_EVENT_STR_SIZE 25
134#define POL_STR_SIZE 128
135
136

--- 42 unchanged lines hidden (view full) ---

179 /*
180 * Sanity check on file name.
181 */
182 if (strlen(name) != (FILENAME_LEN - 1)) {
183 errno = EINVAL;
184 return (NULL);
185 }
186
168 asprintf(&fn, "%s/%s", dirent->dirname, name);
187 /*
188 * If the host is set then also add the hostname to the filename.
189 */
190 if (auditd_hostlen != -1)
191 asprintf(&fn, "%s/%s.%s", dirent->dirname, name, auditd_host);
192 else
193 asprintf(&fn, "%s/%s", dirent->dirname, name);
169 return (fn);
170}
171
172/*
173 * Insert the directory entry in the list by the way they are ordered in
174 * audit_control(5). Move the entries that are over the soft and hard limits
175 * toward the tail.
176 */

--- 22 unchanged lines hidden (view full) ---

199 * ADE_PARSE error parsing audit_control(5).
200 * ADE_AUDITON error getting/setting auditon(2) value.
201 * ADE_GETADDR error getting address info for host.
202 * ADE_ADDRFAM un-supported address family.
203 */
204int
205auditd_set_host(void)
206{
194 return (fn);
195}
196
197/*
198 * Insert the directory entry in the list by the way they are ordered in
199 * audit_control(5). Move the entries that are over the soft and hard limits
200 * toward the tail.
201 */

--- 22 unchanged lines hidden (view full) ---

224 * ADE_PARSE error parsing audit_control(5).
225 * ADE_AUDITON error getting/setting auditon(2) value.
226 * ADE_GETADDR error getting address info for host.
227 * ADE_ADDRFAM un-supported address family.
228 */
229int
230auditd_set_host(void)
231{
207 char hoststr[MAXHOSTNAMELEN];
208 struct sockaddr_in6 *sin6;
209 struct sockaddr_in *sin;
210 struct addrinfo *res;
211 struct auditinfo_addr aia;
212 int error, ret = ADE_NOERR;
213
232 struct sockaddr_in6 *sin6;
233 struct sockaddr_in *sin;
234 struct addrinfo *res;
235 struct auditinfo_addr aia;
236 int error, ret = ADE_NOERR;
237
214 if (getachost(hoststr, MAXHOSTNAMELEN) != 0) {
215
216 ret = ADE_PARSE;
238 if (getachost(auditd_host, sizeof(auditd_host)) != 0) {
239 ret = ADE_PARSE;
217
218 /*
219 * To maintain reverse compatability with older audit_control
220 * files, simply drop a warning if the host parameter has not
221 * been set. However, we will explicitly disable the
222 * generation of extended audit header by passing in a zeroed
223 * termid structure.
224 */
225 bzero(&aia, sizeof(aia));
226 aia.ai_termid.at_type = AU_IPv4;
227 error = auditon(A_SETKAUDIT, &aia, sizeof(aia));
228 if (error < 0 && errno != ENOSYS)
229 ret = ADE_AUDITON;
230 return (ret);
231 }
240
241 /*
242 * To maintain reverse compatability with older audit_control
243 * files, simply drop a warning if the host parameter has not
244 * been set. However, we will explicitly disable the
245 * generation of extended audit header by passing in a zeroed
246 * termid structure.
247 */
248 bzero(&aia, sizeof(aia));
249 aia.ai_termid.at_type = AU_IPv4;
250 error = auditon(A_SETKAUDIT, &aia, sizeof(aia));
251 if (error < 0 && errno != ENOSYS)
252 ret = ADE_AUDITON;
253 return (ret);
254 }
232 error = getaddrinfo(hoststr, NULL, NULL, &res);
255 auditd_hostlen = strlen(auditd_host);
256 error = getaddrinfo(auditd_host, NULL, NULL, &res);
233 if (error)
234 return (ADE_GETADDR);
235 switch (res->ai_family) {
236 case PF_INET6:
237 sin6 = (struct sockaddr_in6 *) res->ai_addr;
238 bcopy(&sin6->sin6_addr.s6_addr,
239 &aia.ai_termid.at_addr[0], sizeof(struct in6_addr));
240 aia.ai_termid.at_type = AU_IPv6;

--- 25 unchanged lines hidden (view full) ---

266 * ADE_PARSE error parsing audit_control(5),
267 * ADE_AUDITON error getting/setting auditon(2) value.
268 */
269int
270auditd_set_minfree(void)
271{
272 au_qctrl_t qctrl;
273
257 if (error)
258 return (ADE_GETADDR);
259 switch (res->ai_family) {
260 case PF_INET6:
261 sin6 = (struct sockaddr_in6 *) res->ai_addr;
262 bcopy(&sin6->sin6_addr.s6_addr,
263 &aia.ai_termid.at_addr[0], sizeof(struct in6_addr));
264 aia.ai_termid.at_type = AU_IPv6;

--- 25 unchanged lines hidden (view full) ---

290 * ADE_PARSE error parsing audit_control(5),
291 * ADE_AUDITON error getting/setting auditon(2) value.
292 */
293int
294auditd_set_minfree(void)
295{
296 au_qctrl_t qctrl;
297
274 if (getacmin(&minval) != 0)
298 if (getacmin(&auditd_minval) != 0)
275 return (ADE_PARSE);
276
277 if (auditon(A_GETQCTRL, &qctrl, sizeof(qctrl)) != 0)
278 return (ADE_AUDITON);
279
299 return (ADE_PARSE);
300
301 if (auditon(A_GETQCTRL, &qctrl, sizeof(qctrl)) != 0)
302 return (ADE_AUDITON);
303
280 if (qctrl.aq_minfree != minval) {
281 qctrl.aq_minfree = minval;
304 if (qctrl.aq_minfree != auditd_minval) {
305 qctrl.aq_minfree = auditd_minval;
282 if (auditon(A_SETQCTRL, &qctrl, sizeof(qctrl)) != 0)
283 return (ADE_AUDITON);
284 }
285
286 return (0);
287}
288
289/*
306 if (auditon(A_SETQCTRL, &qctrl, sizeof(qctrl)) != 0)
307 return (ADE_AUDITON);
308 }
309
310 return (0);
311}
312
313/*
314 * Convert a trailname into a timestamp (seconds). Return 0 if the conversion
315 * was successful.
316 */
317static int
318trailname_to_tstamp(char *fn, time_t *tstamp)
319{
320 struct tm tm;
321 char ts[TIMESTAMP_LEN];
322 char *p;
323
324 *tstamp = 0;
325
326 /*
327 * Get the ending time stamp.
328 */
329 if ((p = strchr(fn, '.')) == NULL)
330 return (1);
331 strlcpy(ts, ++p, TIMESTAMP_LEN);
332 if (strlen(ts) != POSTFIX_LEN)
333 return (1);
334
335 bzero(&tm, sizeof(tm));
336
337 /* seconds (0-60) */
338 p = ts + POSTFIX_LEN - 2;
339 tm.tm_sec = atol(p);
340 if (tm.tm_sec < 0 || tm.tm_sec > 60)
341 return (1);
342
343 /* minutes (0-59) */
344 *p = '\0'; p -= 2;
345 tm.tm_min = atol(p);
346 if (tm.tm_min < 0 || tm.tm_min > 59)
347 return (1);
348
349 /* hours (0 - 23) */
350 *p = '\0'; p -= 2;
351 tm.tm_hour = atol(p);
352 if (tm.tm_hour < 0 || tm.tm_hour > 23)
353 return (1);
354
355 /* day of month (1-31) */
356 *p = '\0'; p -= 2;
357 tm.tm_mday = atol(p);
358 if (tm.tm_mday < 1 || tm.tm_mday > 31)
359 return (1);
360
361 /* month (0 - 11) */
362 *p = '\0'; p -= 2;
363 tm.tm_mon = atol(p) - 1;
364 if (tm.tm_mon < 0 || tm.tm_mon > 11)
365 return (1);
366
367 /* year (year - 1900) */
368 *p = '\0'; p -= 4;
369 tm.tm_year = atol(p) - 1900;
370 if (tm.tm_year < 0)
371 return (1);
372
373 *tstamp = timegm(&tm);
374
375 return (0);
376}
377
378/*
379 * Remove audit trails files according to the expiration conditions. Returns:
380 * ADE_NOERR on success or there is nothing to do.
381 * ADE_PARSE if error parsing audit_control(5).
382 * ADE_NOMEM if could not allocate memory.
383 * ADE_EXPIRE if there was an unespected error.
384 */
385int
386auditd_expire_trails(int (*warn_expired)(char *))
387{
388 int andflg, ret = ADE_NOERR;
389 size_t expire_size, total_size = 0L;
390 time_t expire_age, oldest_time, current_time = time(NULL);
391 struct dir_ent *traildir;
392 struct audit_trail *at;
393 char *afnp, *pn;
394 TAILQ_HEAD(au_trls_head, audit_trail) head =
395 TAILQ_HEAD_INITIALIZER(head);
396 struct stat stbuf;
397 char activefn[MAXPATHLEN];
398
399 /*
400 * Read the expiration conditions. If no conditions then return no
401 * error.
402 */
403 if (getacexpire(&andflg, &expire_age, &expire_size) < 0)
404 return (ADE_PARSE);
405 if (!expire_age && !expire_size)
406 return (ADE_NOERR);
407
408 /*
409 * Read the 'current' trail file name. Trim off directory path.
410 */
411 activefn[0] = '\0';
412 readlink(AUDIT_CURRENT_LINK, activefn, MAXPATHLEN - 1);
413 if ((afnp = strrchr(activefn, '/')) != NULL)
414 afnp++;
415
416
417 /*
418 * Build tail queue of the trail files.
419 */
420 TAILQ_FOREACH(traildir, &dir_q, dirs) {
421 DIR *dirp;
422 struct dirent *dp;
423
424 dirp = opendir(traildir->dirname);
425 while ((dp = readdir(dirp)) != NULL) {
426 time_t tstamp = 0;
427 struct audit_trail *new;
428
429 /*
430 * Quickly filter non-trail files.
431 */
432 if (dp->d_namlen != (FILENAME_LEN - 1) ||
433#ifdef DT_REG
434 dp->d_type != DT_REG ||
435#endif
436 dp->d_name[POSTFIX_LEN] != '.')
437 continue;
438
439 if (asprintf(&pn, "%s/%s", traildir->dirname,
440 dp->d_name) < 0) {
441 ret = ADE_NOMEM;
442 break;
443 }
444
445 if (stat(pn, &stbuf) < 0 || !S_ISREG(stbuf.st_mode)) {
446 free(pn);
447 continue;
448 }
449
450 total_size += stbuf.st_size;
451
452 /*
453 * If this is the 'current' audit trail then
454 * don't add it to the tail queue.
455 */
456 if (NULL != afnp &&
457 strncmp(dp->d_name, afnp, FILENAME_LEN) == 0) {
458 free(pn);
459 continue;
460 }
461
462 /*
463 * Get the ending time stamp encoded in the trail
464 * name. If we can't read it or if it is older
465 * than Jan 1, 2000 then use the mtime.
466 */
467 if (trailname_to_tstamp(dp->d_name, &tstamp) != 0 ||
468 tstamp < JAN_01_2000)
469 tstamp = stbuf.st_mtime;
470
471 /*
472 * If the time stamp is older than Jan 1, 2000 then
473 * update the mtime of the trail file to the current
474 * time. This is so we don't prematurely remove a trail
475 * file that was created while the system clock reset
476 * to the * "beginning of time" but later the system
477 * clock is set to the correct current time.
478 */
479 if (current_time >= JAN_01_2000 &&
480 tstamp < JAN_01_2000) {
481 struct timeval tv[2];
482
483 tstamp = stbuf.st_mtime = current_time;
484 TIMESPEC_TO_TIMEVAL(&tv[0],
485 &stbuf.st_atimespec);
486 TIMESPEC_TO_TIMEVAL(&tv[1],
487 &stbuf.st_mtimespec);
488 utimes(pn, tv);
489 }
490
491 /*
492 * Allocate and populate the new entry.
493 */
494 new = malloc(sizeof(*new));
495 if (NULL == new) {
496 free(pn);
497 ret = ADE_NOMEM;
498 break;
499 }
500 new->at_time = tstamp;
501 new->at_size = stbuf.st_size;
502 new->at_path = pn;
503
504 /*
505 * Check to see if we have a new head. Otherwise,
506 * walk the tailq from the tail first and do a simple
507 * insertion sort.
508 */
509 if (TAILQ_EMPTY(&head) ||
510 (new->at_time <= TAILQ_FIRST(&head)->at_time)) {
511 TAILQ_INSERT_HEAD(&head, new, at_trls);
512 continue;
513 }
514
515 TAILQ_FOREACH_REVERSE(at, &head, au_trls_head, at_trls)
516 if (new->at_time >= at->at_time) {
517 TAILQ_INSERT_AFTER(&head, at, new,
518 at_trls);
519 break;
520 }
521
522 }
523 }
524
525 oldest_time = current_time - expire_age;
526
527 /*
528 * Expire trail files, oldest (mtime) first, if the given
529 * conditions are met.
530 */
531 at = TAILQ_FIRST(&head);
532 while (NULL != at) {
533 struct audit_trail *at_next = TAILQ_NEXT(at, at_trls);
534
535 if (andflg) {
536 if ((expire_size && total_size > expire_size) &&
537 (expire_age && at->at_time < oldest_time)) {
538 if (warn_expired)
539 (*warn_expired)(at->at_path);
540 if (unlink(at->at_path) < 0)
541 ret = ADE_EXPIRE;
542 total_size -= at->at_size;
543 }
544 } else {
545 if ((expire_size && total_size > expire_size) ||
546 (expire_age && at->at_time < oldest_time)) {
547 if (warn_expired)
548 (*warn_expired)(at->at_path);
549 if (unlink(at->at_path) < 0)
550 ret = ADE_EXPIRE;
551 total_size -= at->at_size;
552 }
553 }
554
555 free(at->at_path);
556 free(at);
557 at = at_next;
558 }
559
560 return (ret);
561}
562
563/*
290 * Parses the "dir" entry in audit_control(5) into an ordered list. Also, will
564 * Parses the "dir" entry in audit_control(5) into an ordered list. Also, will
291 * set the minfree value if not already set. Arguments include function
292 * pointers to audit_warn functions for soft and hard limits. Returns:
565 * set the minfree and host values if not already set. Arguments include
566 * function pointers to audit_warn functions for soft and hard limits. Returns:
293 * ADE_NOERR on success,
294 * ADE_PARSE error parsing audit_control(5),
295 * ADE_AUDITON error getting/setting auditon(2) value,
296 * ADE_NOMEM error allocating memory,
297 * ADE_SOFTLIM if all the directories are over the soft limit,
298 * ADE_HARDLIM if all the directories are over the hard limit,
299 */
300int
301auditd_read_dirs(int (*warn_soft)(char *), int (*warn_hard)(char *))
302{
303 char cur_dir[MAXNAMLEN];
304 struct dir_ent *dirent;
305 struct statfs sfs;
306 int err;
307 char soft, hard;
308 int tcnt = 0;
309 int scnt = 0;
310 int hcnt = 0;
311
567 * ADE_NOERR on success,
568 * ADE_PARSE error parsing audit_control(5),
569 * ADE_AUDITON error getting/setting auditon(2) value,
570 * ADE_NOMEM error allocating memory,
571 * ADE_SOFTLIM if all the directories are over the soft limit,
572 * ADE_HARDLIM if all the directories are over the hard limit,
573 */
574int
575auditd_read_dirs(int (*warn_soft)(char *), int (*warn_hard)(char *))
576{
577 char cur_dir[MAXNAMLEN];
578 struct dir_ent *dirent;
579 struct statfs sfs;
580 int err;
581 char soft, hard;
582 int tcnt = 0;
583 int scnt = 0;
584 int hcnt = 0;
585
312 if (minval == -1 && (err = auditd_set_minfree()) != 0)
586 if (auditd_minval == -1 && (err = auditd_set_minfree()) != 0)
313 return (err);
314
587 return (err);
588
589 if (auditd_hostlen == -1)
590 auditd_set_host();
591
315 /*
316 * Init directory q. Force a re-read of the file the next time.
317 */
318 free_dir_q();
319 endac();
320
321 /*
322 * Read the list of directories into an ordered linked list
323 * admin's preference, then those over soft limit and, finally,
324 * those over the hard limit.
325 *
326 * XXX We should use the reentrant interfaces once they are
327 * available.
328 */
329 while (getacdir(cur_dir, MAXNAMLEN) >= 0) {
330 if (statfs(cur_dir, &sfs) < 0)
331 continue; /* XXX should warn */
592 /*
593 * Init directory q. Force a re-read of the file the next time.
594 */
595 free_dir_q();
596 endac();
597
598 /*
599 * Read the list of directories into an ordered linked list
600 * admin's preference, then those over soft limit and, finally,
601 * those over the hard limit.
602 *
603 * XXX We should use the reentrant interfaces once they are
604 * available.
605 */
606 while (getacdir(cur_dir, MAXNAMLEN) >= 0) {
607 if (statfs(cur_dir, &sfs) < 0)
608 continue; /* XXX should warn */
332 soft = (sfs.f_bfree < (sfs.f_blocks / (100 / minval))) ? 1 : 0;
609 soft = (sfs.f_bfree < (sfs.f_blocks / (100 / auditd_minval))) ?
610 1 : 0;
333 hard = (sfs.f_bfree < AUDIT_HARD_LIMIT_FREE_BLOCKS) ? 1 : 0;
334 if (soft) {
335 if (warn_soft)
336 (*warn_soft)(cur_dir);
337 scnt++;
338 }
339 if (hard) {
340 if (warn_hard)

--- 21 unchanged lines hidden (view full) ---

362 return (ADE_SOFTLIM);
363 return (0);
364}
365
366void
367auditd_close_dirs(void)
368{
369 free_dir_q();
611 hard = (sfs.f_bfree < AUDIT_HARD_LIMIT_FREE_BLOCKS) ? 1 : 0;
612 if (soft) {
613 if (warn_soft)
614 (*warn_soft)(cur_dir);
615 scnt++;
616 }
617 if (hard) {
618 if (warn_hard)

--- 21 unchanged lines hidden (view full) ---

640 return (ADE_SOFTLIM);
641 return (0);
642}
643
644void
645auditd_close_dirs(void)
646{
647 free_dir_q();
370 minval = -1;
648 auditd_minval = -1;
649 auditd_hostlen = -1;
371}
372
373
374/*
375 * Process the audit event file, obtaining a class mapping for each event, and
376 * set that mapping into the kernel. Return:
377 * n number of event mappings that were successfully processed,
378 * ADE_NOMEM if there was an error allocating memory.

--- 165 unchanged lines hidden (view full) ---

544
545 if (strlen(TS) != (TIMESTAMP_LEN - 1) ||
546 snprintf(timestr, FILENAME_LEN, "%s.%s", TS, NOT_TERMINATED) < 0) {
547 errno = EINVAL;
548 return (ADE_STRERR);
549 }
550
551 /* Try until we succeed. */
650}
651
652
653/*
654 * Process the audit event file, obtaining a class mapping for each event, and
655 * set that mapping into the kernel. Return:
656 * n number of event mappings that were successfully processed,
657 * ADE_NOMEM if there was an error allocating memory.

--- 165 unchanged lines hidden (view full) ---

823
824 if (strlen(TS) != (TIMESTAMP_LEN - 1) ||
825 snprintf(timestr, FILENAME_LEN, "%s.%s", TS, NOT_TERMINATED) < 0) {
826 errno = EINVAL;
827 return (ADE_STRERR);
828 }
829
830 /* Try until we succeed. */
552 while ((dirent = TAILQ_FIRST(&dir_q))) {
831 TAILQ_FOREACH(dirent, &dir_q, dirs) {
553 if (dirent->hardlim)
554 continue;
555 if ((fn = affixdir(timestr, dirent)) == NULL)
556 return (ADE_STRERR);
557
558 /*
559 * Create and open the file; then close and pass to the
560 * kernel if all went well.

--- 40 unchanged lines hidden (view full) ---

601 return (ADE_SWAPERR);
602}
603
604/*
605 * Mask calling process from being audited. Returns:
606 * ADE_NOERR on success,
607 * ADE_SETAUDIT if setaudit(2) fails.
608 */
832 if (dirent->hardlim)
833 continue;
834 if ((fn = affixdir(timestr, dirent)) == NULL)
835 return (ADE_STRERR);
836
837 /*
838 * Create and open the file; then close and pass to the
839 * kernel if all went well.

--- 40 unchanged lines hidden (view full) ---

880 return (ADE_SWAPERR);
881}
882
883/*
884 * Mask calling process from being audited. Returns:
885 * ADE_NOERR on success,
886 * ADE_SETAUDIT if setaudit(2) fails.
887 */
888#ifdef __APPLE__
609int
610auditd_prevent_audit(void)
611{
889int
890auditd_prevent_audit(void)
891{
892 auditinfo_addr_t aia;
893
894 /*
895 * To prevent event feedback cycles and avoid audit becoming stalled if
896 * auditing is suspended we mask this processes events from being
897 * audited. We allow the uid, tid, and mask fields to be implicitly
898 * set to zero, but do set the audit session ID to the PID.
899 *
900 * XXXRW: Is there more to it than this?
901 */
902 bzero(&aia, sizeof(aia));
903 aia.ai_asid = AU_ASSIGN_ASID;
904 aia.ai_termid.at_type = AU_IPv4;
905 if (setaudit_addr(&aia, sizeof(aia)) != 0)
906 return (ADE_SETAUDIT);
907 return (ADE_NOERR);
908}
909#else
910int
911auditd_prevent_audit(void)
912{
612 auditinfo_t ai;
613
614 /*
615 * To prevent event feedback cycles and avoid audit becoming stalled if
616 * auditing is suspended we mask this processes events from being
617 * audited. We allow the uid, tid, and mask fields to be implicitly
618 * set to zero, but do set the audit session ID to the PID.
619 *
620 * XXXRW: Is there more to it than this?
621 */
622 bzero(&ai, sizeof(ai));
623 ai.ai_asid = getpid();
624 if (setaudit(&ai) != 0)
625 return (ADE_SETAUDIT);
626 return (ADE_NOERR);
627}
913 auditinfo_t ai;
914
915 /*
916 * To prevent event feedback cycles and avoid audit becoming stalled if
917 * auditing is suspended we mask this processes events from being
918 * audited. We allow the uid, tid, and mask fields to be implicitly
919 * set to zero, but do set the audit session ID to the PID.
920 *
921 * XXXRW: Is there more to it than this?
922 */
923 bzero(&ai, sizeof(ai));
924 ai.ai_asid = getpid();
925 if (setaudit(&ai) != 0)
926 return (ADE_SETAUDIT);
927 return (ADE_NOERR);
928}
929#endif /* __APPLE__ */
628
629/*
630 * Generate and submit audit record for audit startup or shutdown. The event
631 * argument can be AUE_audit_recovery, AUE_audit_startup or
632 * AUE_audit_shutdown. The path argument will add a path token, if not NULL.
633 * Returns:
634 * AUE_NOERR on success,
635 * ADE_NOMEM if memory allocation fails,

--- 72 unchanged lines hidden (view full) ---

708 if (len > 0) {
709 /* 'current' exist but is it pointing at a valid file? */
710 recoveredname[len++] = '\0';
711 if (stat(recoveredname, &sb) == 0) {
712 /* Yes, rename it to a crash recovery file. */
713 strlcpy(newname, recoveredname, MAXPATHLEN);
714
715 if ((ptr = strstr(newname, NOT_TERMINATED)) != NULL) {
930
931/*
932 * Generate and submit audit record for audit startup or shutdown. The event
933 * argument can be AUE_audit_recovery, AUE_audit_startup or
934 * AUE_audit_shutdown. The path argument will add a path token, if not NULL.
935 * Returns:
936 * AUE_NOERR on success,
937 * ADE_NOMEM if memory allocation fails,

--- 72 unchanged lines hidden (view full) ---

1010 if (len > 0) {
1011 /* 'current' exist but is it pointing at a valid file? */
1012 recoveredname[len++] = '\0';
1013 if (stat(recoveredname, &sb) == 0) {
1014 /* Yes, rename it to a crash recovery file. */
1015 strlcpy(newname, recoveredname, MAXPATHLEN);
1016
1017 if ((ptr = strstr(newname, NOT_TERMINATED)) != NULL) {
716 strlcpy(ptr, CRASH_RECOVERY, TIMESTAMP_LEN);
1018 memcpy(ptr, CRASH_RECOVERY, POSTFIX_LEN);
717 if (rename(recoveredname, newname) != 0)
718 return (ADE_RENAME);
719 } else
720 return (ADE_STRERR);
721
722 path = newname;
723 }
724

--- 20 unchanged lines hidden (view full) ---

745 * notify. Return:
746 * 0 on success,
747 * -1 on failure.
748 */
749int
750audit_quick_start(void)
751{
752 int err;
1019 if (rename(recoveredname, newname) != 0)
1020 return (ADE_RENAME);
1021 } else
1022 return (ADE_STRERR);
1023
1024 path = newname;
1025 }
1026

--- 20 unchanged lines hidden (view full) ---

1047 * notify. Return:
1048 * 0 on success,
1049 * -1 on failure.
1050 */
1051int
1052audit_quick_start(void)
1053{
1054 int err;
753 char *newfile;
1055 char *newfile = NULL;
754 time_t tt;
755 char TS[TIMESTAMP_LEN];
1056 time_t tt;
1057 char TS[TIMESTAMP_LEN];
1058 int ret = 0;
756
757 /*
758 * Mask auditing of this process.
759 */
760 if (auditd_prevent_audit() != 0)
761 return (-1);
762
763 /*

--- 4 unchanged lines hidden (view full) ---

768 return (-1);
769
770 /*
771 * Create a new audit trail log.
772 */
773 if (getTSstr(tt, TS, TIMESTAMP_LEN) != 0)
774 return (-1);
775 err = auditd_swap_trail(TS, &newfile, getgid(), NULL);
1059
1060 /*
1061 * Mask auditing of this process.
1062 */
1063 if (auditd_prevent_audit() != 0)
1064 return (-1);
1065
1066 /*

--- 4 unchanged lines hidden (view full) ---

1071 return (-1);
1072
1073 /*
1074 * Create a new audit trail log.
1075 */
1076 if (getTSstr(tt, TS, TIMESTAMP_LEN) != 0)
1077 return (-1);
1078 err = auditd_swap_trail(TS, &newfile, getgid(), NULL);
776 if (err != ADE_NOERR && err != ADE_ACTL)
777 return (-1);
1079 if (err != ADE_NOERR && err != ADE_ACTL) {
1080 ret = -1;
1081 goto out;
1082 }
778
779 /*
780 * Add the current symlink and recover from crash, if needed.
781 */
1083
1084 /*
1085 * Add the current symlink and recover from crash, if needed.
1086 */
782 if (auditd_new_curlink(newfile) != 0)
783 return(-1);
1087 if (auditd_new_curlink(newfile) != 0) {
1088 ret = -1;
1089 goto out;
1090 }
784
785 /*
786 * At this point auditing has started so generate audit start-up record.
787 */
1091
1092 /*
1093 * At this point auditing has started so generate audit start-up record.
1094 */
788 if (auditd_gen_record(AUE_audit_startup, NULL) != 0)
789 return (-1);
1095 if (auditd_gen_record(AUE_audit_startup, NULL) != 0) {
1096 ret = -1;
1097 goto out;
1098 }
790
791 /*
792 * Configure the audit controls.
793 */
794 (void) auditd_set_evcmap();
795 (void) auditd_set_namask();
796 (void) auditd_set_policy();
797 (void) auditd_set_fsize();
798 (void) auditd_set_minfree();
799 (void) auditd_set_host();
800
1099
1100 /*
1101 * Configure the audit controls.
1102 */
1103 (void) auditd_set_evcmap();
1104 (void) auditd_set_namask();
1105 (void) auditd_set_policy();
1106 (void) auditd_set_fsize();
1107 (void) auditd_set_minfree();
1108 (void) auditd_set_host();
1109
801 return (0);
1110out:
1111 if (newfile != NULL)
1112 free(newfile);
1113
1114 return (ret);
802}
803
804/*
805 * Shut down auditing quickly. Assumes that is only called on system shutdown.
806 * Returns:
807 * 0 on success,
808 * -1 on failure.
809 */

--- 40 unchanged lines hidden (view full) ---

850 oldname[len++] = '\0';
851
852 if (getTSstr(tt, TS, TIMESTAMP_LEN) != 0)
853 return (-1);
854
855 strlcpy(newname, oldname, len);
856
857 if ((ptr = strstr(newname, NOT_TERMINATED)) != NULL) {
1115}
1116
1117/*
1118 * Shut down auditing quickly. Assumes that is only called on system shutdown.
1119 * Returns:
1120 * 0 on success,
1121 * -1 on failure.
1122 */

--- 40 unchanged lines hidden (view full) ---

1163 oldname[len++] = '\0';
1164
1165 if (getTSstr(tt, TS, TIMESTAMP_LEN) != 0)
1166 return (-1);
1167
1168 strlcpy(newname, oldname, len);
1169
1170 if ((ptr = strstr(newname, NOT_TERMINATED)) != NULL) {
858 strlcpy(ptr, TS, TIMESTAMP_LEN);
1171 memcpy(ptr, TS, POSTFIX_LEN);
859 if (rename(oldname, newname) != 0)
860 return (-1);
861 } else
862 return (-1);
863
864 (void) unlink(AUDIT_CURRENT_LINK);
865
866 return (0);
867}
1172 if (rename(oldname, newname) != 0)
1173 return (-1);
1174 } else
1175 return (-1);
1176
1177 (void) unlink(AUDIT_CURRENT_LINK);
1178
1179 return (0);
1180}