2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1999-2005 Apple Inc.
5 * Copyright (c) 2006-2007, 2016-2018 Robert N. M. Watson
8 * Portions of this software were developed by BAE Systems, the University of
9 * Cambridge Computer Laboratory, and Memorial University under DARPA/AFRL
10 * contract FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent
11 * Computing (TC) research program.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of Apple Inc. ("Apple") nor the names of
22 * its contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR
29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
33 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
34 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include <sys/param.h>
42 #include <sys/condvar.h>
44 #include <sys/eventhandler.h>
46 #include <sys/filedesc.h>
47 #include <sys/fcntl.h>
50 #include <sys/kernel.h>
51 #include <sys/kthread.h>
52 #include <sys/malloc.h>
53 #include <sys/mount.h>
54 #include <sys/namei.h>
57 #include <sys/queue.h>
58 #include <sys/socket.h>
59 #include <sys/socketvar.h>
60 #include <sys/protosw.h>
61 #include <sys/domain.h>
62 #include <sys/sysctl.h>
63 #include <sys/sysproto.h>
64 #include <sys/sysent.h>
65 #include <sys/systm.h>
66 #include <sys/ucred.h>
69 #include <sys/unistd.h>
70 #include <sys/vnode.h>
72 #include <bsm/audit.h>
73 #include <bsm/audit_internal.h>
74 #include <bsm/audit_kevents.h>
76 #include <netinet/in.h>
77 #include <netinet/in_pcb.h>
79 #include <security/audit/audit.h>
80 #include <security/audit/audit_private.h>
84 FEATURE(audit, "BSM audit support");
86 static uma_zone_t audit_record_zone;
87 static MALLOC_DEFINE(M_AUDITCRED, "audit_cred", "Audit cred storage");
88 MALLOC_DEFINE(M_AUDITDATA, "audit_data", "Audit data storage");
89 MALLOC_DEFINE(M_AUDITPATH, "audit_path", "Audit path storage");
90 MALLOC_DEFINE(M_AUDITTEXT, "audit_text", "Audit text storage");
91 MALLOC_DEFINE(M_AUDITGIDSET, "audit_gidset", "Audit GID set storage");
93 static SYSCTL_NODE(_security, OID_AUTO, audit, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
94 "TrustedBSD audit controls");
97 * Audit control settings that are set/read by system calls and are hence
100 * Define the audit control flags.
102 int audit_trail_enabled;
103 int audit_trail_suspended;
105 u_int audit_dtrace_enabled;
107 bool __read_frequently audit_syscalls_enabled;
110 * Flags controlling behavior in low storage situations. Should we panic if
111 * a write fails? Should we fail stop if we're out of disk space?
113 int audit_panic_on_write_fail;
119 * Are we currently "failing stop" due to out of disk space?
121 int audit_in_failure;
124 * Global audit statistics.
126 struct audit_fstat audit_fstat;
129 * Preselection mask for non-attributable events.
131 struct au_mask audit_nae_mask;
134 * Mutex to protect global variables shared between various threads and
137 struct mtx audit_mtx;
140 * Queue of audit records ready for delivery to disk. We insert new records
141 * at the tail, and remove records from the head. Also, a count of the
142 * number of records used for checking queue depth. In addition, a counter
143 * of records that we have allocated but are not yet in the queue, which is
144 * needed to estimate the total size of the combined set of records
145 * outstanding in the system.
147 struct kaudit_queue audit_q;
152 * Audit queue control settings (minimum free, low/high water marks, etc.)
154 struct au_qctrl audit_qctrl;
157 * Condition variable to signal to the worker that it has work to do: either
158 * new records are in the queue, or a log replacement is taking place.
160 struct cv audit_worker_cv;
163 * Condition variable to flag when crossing the low watermark, meaning that
164 * threads blocked due to hitting the high watermark can wake up and continue
167 struct cv audit_watermark_cv;
170 * Condition variable for auditing threads wait on when in fail-stop mode.
171 * Threads wait on this CV forever (and ever), never seeing the light of day
174 static struct cv audit_fail_cv;
177 * Optional DTrace audit provider support: function pointers for preselection
181 void *(*dtaudit_hook_preselect)(au_id_t auid, au_event_t event,
183 int (*dtaudit_hook_commit)(struct kaudit_record *kar, au_id_t auid,
184 au_event_t event, au_class_t class, int sorf);
185 void (*dtaudit_hook_bsm)(struct kaudit_record *kar, au_id_t auid,
186 au_event_t event, au_class_t class, int sorf,
187 void *bsm_data, size_t bsm_lenlen);
191 * Kernel audit information. This will store the current audit address
192 * or host information that the kernel will use when it's generating
193 * audit records. This data is modified by the A_GET{SET}KAUDIT auditon(2)
196 static struct auditinfo_addr audit_kinfo;
197 static struct rwlock audit_kinfo_lock;
199 #define KINFO_LOCK_INIT() rw_init(&audit_kinfo_lock, \
201 #define KINFO_RLOCK() rw_rlock(&audit_kinfo_lock)
202 #define KINFO_WLOCK() rw_wlock(&audit_kinfo_lock)
203 #define KINFO_RUNLOCK() rw_runlock(&audit_kinfo_lock)
204 #define KINFO_WUNLOCK() rw_wunlock(&audit_kinfo_lock)
207 * Check various policies to see if we should enable system-call audit hooks.
208 * Note that despite the mutex being held, we want to assign a value exactly
209 * once, as checks of the flag are performed lock-free for performance
210 * reasons. The mutex is used to get a consistent snapshot of policy state --
211 * e.g., safely accessing the two audit_trail flags.
214 audit_syscalls_enabled_update(void)
217 mtx_lock(&audit_mtx);
219 if (audit_dtrace_enabled)
220 audit_syscalls_enabled = true;
223 if (audit_trail_enabled && !audit_trail_suspended)
224 audit_syscalls_enabled = true;
226 audit_syscalls_enabled = false;
230 mtx_unlock(&audit_mtx);
234 audit_set_kinfo(struct auditinfo_addr *ak)
237 KASSERT(ak->ai_termid.at_type == AU_IPv4 ||
238 ak->ai_termid.at_type == AU_IPv6,
239 ("audit_set_kinfo: invalid address type"));
247 audit_get_kinfo(struct auditinfo_addr *ak)
250 KASSERT(audit_kinfo.ai_termid.at_type == AU_IPv4 ||
251 audit_kinfo.ai_termid.at_type == AU_IPv6,
252 ("audit_set_kinfo: invalid address type"));
260 * Construct an audit record for the passed thread.
263 audit_record_ctor(void *mem, int size, void *arg, int flags)
265 struct kaudit_record *ar;
270 KASSERT(sizeof(*ar) == size, ("audit_record_ctor: wrong size"));
274 bzero(ar, sizeof(*ar));
275 ar->k_ar.ar_magic = AUDIT_RECORD_MAGIC;
276 nanotime(&ar->k_ar.ar_starttime);
279 * Export the subject credential.
282 cru2x(cred, &ar->k_ar.ar_subj_cred);
283 ar->k_ar.ar_subj_ruid = cred->cr_ruid;
284 ar->k_ar.ar_subj_rgid = cred->cr_rgid;
285 ar->k_ar.ar_subj_egid = cred->cr_groups[0];
286 ar->k_ar.ar_subj_auid = cred->cr_audit.ai_auid;
287 ar->k_ar.ar_subj_asid = cred->cr_audit.ai_asid;
288 ar->k_ar.ar_subj_pid = td->td_proc->p_pid;
289 ar->k_ar.ar_subj_amask = cred->cr_audit.ai_mask;
290 ar->k_ar.ar_subj_term_addr = cred->cr_audit.ai_termid;
292 * If this process is jailed, make sure we capture the name of the
293 * jail so we can use it to generate a zonename token when we covert
294 * this record to BSM.
297 pr = cred->cr_prison;
298 (void) strlcpy(ar->k_ar.ar_jailname, pr->pr_name,
299 sizeof(ar->k_ar.ar_jailname));
301 ar->k_ar.ar_jailname[0] = '\0';
306 audit_record_dtor(void *mem, int size, void *arg)
308 struct kaudit_record *ar;
310 KASSERT(sizeof(*ar) == size, ("audit_record_dtor: wrong size"));
313 if (ar->k_ar.ar_arg_upath1 != NULL)
314 free(ar->k_ar.ar_arg_upath1, M_AUDITPATH);
315 if (ar->k_ar.ar_arg_upath2 != NULL)
316 free(ar->k_ar.ar_arg_upath2, M_AUDITPATH);
317 if (ar->k_ar.ar_arg_text != NULL)
318 free(ar->k_ar.ar_arg_text, M_AUDITTEXT);
319 if (ar->k_udata != NULL)
320 free(ar->k_udata, M_AUDITDATA);
321 if (ar->k_ar.ar_arg_argv != NULL)
322 free(ar->k_ar.ar_arg_argv, M_AUDITTEXT);
323 if (ar->k_ar.ar_arg_envv != NULL)
324 free(ar->k_ar.ar_arg_envv, M_AUDITTEXT);
325 if (ar->k_ar.ar_arg_groups.gidset != NULL)
326 free(ar->k_ar.ar_arg_groups.gidset, M_AUDITGIDSET);
330 * Initialize the Audit subsystem: configuration state, work queue,
331 * synchronization primitives, worker thread, and trigger device node. Also
332 * call into the BSM assembly code to initialize it.
338 audit_trail_enabled = 0;
339 audit_trail_suspended = 0;
340 audit_syscalls_enabled = false;
341 audit_panic_on_write_fail = 0;
343 audit_in_failure = 0;
347 audit_fstat.af_filesz = 0; /* '0' means unset, unbounded. */
348 audit_fstat.af_currsz = 0;
349 audit_nae_mask.am_success = 0;
350 audit_nae_mask.am_failure = 0;
352 TAILQ_INIT(&audit_q);
355 audit_qctrl.aq_hiwater = AQ_HIWATER;
356 audit_qctrl.aq_lowater = AQ_LOWATER;
357 audit_qctrl.aq_bufsz = AQ_BUFSZ;
358 audit_qctrl.aq_minfree = AU_FS_MINFREE;
360 audit_kinfo.ai_termid.at_type = AU_IPv4;
361 audit_kinfo.ai_termid.at_addr[0] = INADDR_ANY;
363 mtx_init(&audit_mtx, "audit_mtx", NULL, MTX_DEF);
365 cv_init(&audit_worker_cv, "audit_worker_cv");
366 cv_init(&audit_watermark_cv, "audit_watermark_cv");
367 cv_init(&audit_fail_cv, "audit_fail_cv");
369 audit_record_zone = uma_zcreate("audit_record",
370 sizeof(struct kaudit_record), audit_record_ctor,
371 audit_record_dtor, NULL, NULL, UMA_ALIGN_PTR, 0);
373 /* First initialisation of audit_syscalls_enabled. */
374 audit_syscalls_enabled_update();
376 /* Initialize the BSM audit subsystem. */
379 audit_trigger_init();
381 /* Register shutdown handler. */
382 EVENTHANDLER_REGISTER(shutdown_pre_sync, audit_shutdown, NULL,
385 /* Start audit worker thread. */
389 SYSINIT(audit_init, SI_SUB_AUDIT, SI_ORDER_FIRST, audit_init, NULL);
392 * Drain the audit queue and close the log at shutdown. Note that this can
393 * be called both from the system shutdown path and also from audit
394 * configuration syscalls, so 'arg' and 'howto' are ignored.
396 * XXXRW: In FreeBSD 7.x and 8.x, this fails to wait for the record queue to
397 * drain before returning, which could lead to lost records on shutdown.
400 audit_shutdown(void *arg, int howto)
403 audit_rotate_vnode(NULL, NULL);
407 * Return the current thread's audit record, if any.
409 struct kaudit_record *
413 return (curthread->td_ar);
417 * XXXAUDIT: Shouldn't there be logic here to sleep waiting on available
418 * pre_q space, suspending the system call until there is room?
420 struct kaudit_record *
421 audit_new(int event, struct thread *td)
423 struct kaudit_record *ar;
426 * Note: the number of outstanding uncommitted audit records is
427 * limited to the number of concurrent threads servicing system calls
430 ar = uma_zalloc_arg(audit_record_zone, td, M_WAITOK);
431 ar->k_ar.ar_event = event;
433 mtx_lock(&audit_mtx);
435 mtx_unlock(&audit_mtx);
441 audit_free(struct kaudit_record *ar)
444 uma_zfree(audit_record_zone, ar);
448 audit_commit(struct kaudit_record *ar, int error, int retval)
454 struct au_mask *aumask;
459 ar->k_ar.ar_errno = error;
460 ar->k_ar.ar_retval = retval;
461 nanotime(&ar->k_ar.ar_endtime);
464 * Decide whether to commit the audit record by checking the error
465 * value from the system call and using the appropriate audit mask.
467 if (ar->k_ar.ar_subj_auid == AU_DEFAUDITID)
468 aumask = &audit_nae_mask;
470 aumask = &ar->k_ar.ar_subj_amask;
473 sorf = AU_PRS_FAILURE;
475 sorf = AU_PRS_SUCCESS;
478 * syscalls.master sometimes contains a prototype event number, which
479 * we will transform into a more specific event number now that we
480 * have more complete information gathered during the system call.
482 switch(ar->k_ar.ar_event) {
484 ar->k_ar.ar_event = audit_flags_and_error_to_openevent(
485 ar->k_ar.ar_arg_fflags, error);
488 case AUE_OPENAT_RWTC:
489 ar->k_ar.ar_event = audit_flags_and_error_to_openatevent(
490 ar->k_ar.ar_arg_fflags, error);
494 ar->k_ar.ar_event = audit_ctlname_to_sysctlevent(
495 ar->k_ar.ar_arg_ctlname, ar->k_ar.ar_valid_arg);
499 /* Convert the auditon() command to an event. */
500 ar->k_ar.ar_event = auditon_command_event(ar->k_ar.ar_arg_cmd);
504 if (ARG_IS_VALID(ar, ARG_SVIPC_WHICH))
506 audit_msgsys_to_event(ar->k_ar.ar_arg_svipc_which);
510 if (ARG_IS_VALID(ar, ARG_SVIPC_WHICH))
512 audit_semsys_to_event(ar->k_ar.ar_arg_svipc_which);
516 if (ARG_IS_VALID(ar, ARG_SVIPC_WHICH))
518 audit_shmsys_to_event(ar->k_ar.ar_arg_svipc_which);
522 auid = ar->k_ar.ar_subj_auid;
523 event = ar->k_ar.ar_event;
524 class = au_event_class(event);
526 ar->k_ar_commit |= AR_COMMIT_KERNEL;
527 if (au_preselect(event, class, aumask, sorf) != 0)
528 ar->k_ar_commit |= AR_PRESELECT_TRAIL;
529 if (audit_pipe_preselect(auid, event, class, sorf,
530 ar->k_ar_commit & AR_PRESELECT_TRAIL) != 0)
531 ar->k_ar_commit |= AR_PRESELECT_PIPE;
534 * Expose the audit record to DTrace, both to allow the "commit" probe
535 * to fire if it's desirable, and also to allow a decision to be made
536 * about later firing with BSM in the audit worker.
538 if (dtaudit_hook_commit != NULL) {
539 if (dtaudit_hook_commit(ar, auid, event, class, sorf) != 0)
540 ar->k_ar_commit |= AR_PRESELECT_DTRACE;
544 if ((ar->k_ar_commit & (AR_PRESELECT_TRAIL | AR_PRESELECT_PIPE |
545 AR_PRESELECT_USER_TRAIL | AR_PRESELECT_USER_PIPE |
546 AR_PRESELECT_DTRACE)) == 0) {
547 mtx_lock(&audit_mtx);
549 mtx_unlock(&audit_mtx);
555 * Note: it could be that some records initiated while audit was
556 * enabled should still be committed?
558 * NB: The check here is not for audit_syscalls because any
559 * DTrace-related obligations have been fulfilled above -- we're just
560 * down to the trail and pipes now.
562 mtx_lock(&audit_mtx);
563 if (audit_trail_suspended || !audit_trail_enabled) {
565 mtx_unlock(&audit_mtx);
571 * Constrain the number of committed audit records based on the
572 * configurable parameter.
574 while (audit_q_len >= audit_qctrl.aq_hiwater)
575 cv_wait(&audit_watermark_cv, &audit_mtx);
577 TAILQ_INSERT_TAIL(&audit_q, ar, k_q);
580 cv_signal(&audit_worker_cv);
581 mtx_unlock(&audit_mtx);
585 * audit_syscall_enter() is called on entry to each system call. It is
586 * responsible for deciding whether or not to audit the call (preselection),
587 * and if so, allocating a per-thread audit record. audit_new() will fill in
588 * basic thread/credential properties.
590 * This function will be entered only if audit_syscalls_enabled was set in the
591 * macro wrapper for this function. It could be cleared by the time this
592 * function runs, but that is an acceptable race.
595 audit_syscall_enter(unsigned short code, struct thread *td)
597 struct au_mask *aumask;
606 KASSERT(td->td_ar == NULL, ("audit_syscall_enter: td->td_ar != NULL"));
607 KASSERT((td->td_pflags & TDP_AUDITREC) == 0,
608 ("audit_syscall_enter: TDP_AUDITREC set"));
611 * In FreeBSD, each ABI has its own system call table, and hence
612 * mapping of system call codes to audit events. Convert the code to
613 * an audit event identifier using the process system call table
614 * reference. In Darwin, there's only one, so we use the global
615 * symbol for the system call table. No audit record is generated
616 * for bad system calls, as no operation has been performed.
618 if (code >= td->td_proc->p_sysent->sv_size)
621 event = td->td_proc->p_sysent->sv_table[code].sy_auevent;
622 if (event == AUE_NULL)
626 * Check which audit mask to use; either the kernel non-attributable
627 * event mask or the process audit mask.
629 auid = td->td_ucred->cr_audit.ai_auid;
630 if (auid == AU_DEFAUDITID)
631 aumask = &audit_nae_mask;
633 aumask = &td->td_ucred->cr_audit.ai_mask;
636 * Determine whether trail or pipe preselection would like an audit
637 * record allocated for this system call.
639 class = au_event_class(event);
640 if (au_preselect(event, class, aumask, AU_PRS_BOTH)) {
642 * If we're out of space and need to suspend unprivileged
643 * processes, do that here rather than trying to allocate
644 * another audit record.
646 * Note: we might wish to be able to continue here in the
647 * future, if the system recovers. That should be possible
648 * by means of checking the condition in a loop around
649 * cv_wait(). It might be desirable to reevaluate whether an
650 * audit record is still required for this event by
651 * re-calling au_preselect().
653 if (audit_in_failure &&
654 priv_check(td, PRIV_AUDIT_FAILSTOP) != 0) {
655 cv_wait(&audit_fail_cv, &audit_mtx);
656 panic("audit_failing_stop: thread continued");
659 } else if (audit_pipe_preselect(auid, event, class, AU_PRS_BOTH, 0)) {
666 * After audit trails and pipes have made their policy choices, DTrace
667 * may request that records be generated as well. This is a slightly
668 * complex affair, as the DTrace audit provider needs the audit
669 * framework to maintain some state on the audit record, which has not
670 * been allocated at the point where the decision has to be made.
671 * This hook must run even if we are not changing the decision, as
672 * DTrace may want to stick event state onto a record we were going to
673 * produce due to the trail or pipes. The event state returned by the
674 * DTrace provider must be safe without locks held between here and
675 * below -- i.e., dtaudit_state must must refer to stable memory.
678 dtaudit_state = NULL;
679 if (dtaudit_hook_preselect != NULL) {
680 dtaudit_state = dtaudit_hook_preselect(auid, event, class);
681 if (dtaudit_state != NULL)
687 * If a record is required, allocate it and attach it to the thread
688 * for use throughout the system call. Also attach DTrace state if
691 * XXXRW: If we decide to reference count the evname_elem underlying
692 * dtaudit_state, we will need to free here if no record is allocated
696 td->td_ar = audit_new(event, td);
697 if (td->td_ar != NULL) {
698 td->td_pflags |= TDP_AUDITREC;
700 td->td_ar->k_dtaudit_state = dtaudit_state;
708 * audit_syscall_exit() is called from the return of every system call, or in
709 * the event of exit1(), during the execution of exit1(). It is responsible
710 * for committing the audit record, if any, along with return condition.
713 audit_syscall_exit(int error, struct thread *td)
718 * Commit the audit record as desired; once we pass the record into
719 * audit_commit(), the memory is owned by the audit subsystem. The
720 * return value from the system call is stored on the user thread.
721 * If there was an error, the return value is set to -1, imitating
722 * the behavior of the cerror routine.
727 retval = td->td_retval[0];
729 audit_commit(td->td_ar, error, retval);
731 td->td_pflags &= ~TDP_AUDITREC;
735 audit_cred_copy(struct ucred *src, struct ucred *dest)
738 bcopy(&src->cr_audit, &dest->cr_audit, sizeof(dest->cr_audit));
742 audit_cred_destroy(struct ucred *cred)
748 audit_cred_init(struct ucred *cred)
751 bzero(&cred->cr_audit, sizeof(cred->cr_audit));
755 * Initialize audit information for the first kernel process (proc 0) and for
756 * the first user process (init).
759 audit_cred_kproc0(struct ucred *cred)
762 cred->cr_audit.ai_auid = AU_DEFAUDITID;
763 cred->cr_audit.ai_termid.at_type = AU_IPv4;
767 audit_cred_proc1(struct ucred *cred)
770 cred->cr_audit.ai_auid = AU_DEFAUDITID;
771 cred->cr_audit.ai_termid.at_type = AU_IPv4;
775 audit_thread_alloc(struct thread *td)
782 audit_thread_free(struct thread *td)
785 KASSERT(td->td_ar == NULL, ("audit_thread_free: td_ar != NULL"));
786 KASSERT((td->td_pflags & TDP_AUDITREC) == 0,
787 ("audit_thread_free: TDP_AUDITREC set"));
791 audit_proc_coredump(struct thread *td, char *path, int errcode)
793 struct kaudit_record *ar;
794 struct au_mask *aumask;
804 * Make sure we are using the correct preselection mask.
807 auid = cred->cr_audit.ai_auid;
808 if (auid == AU_DEFAUDITID)
809 aumask = &audit_nae_mask;
811 aumask = &cred->cr_audit.ai_mask;
813 * It's possible for coredump(9) generation to fail. Make sure that
814 * we handle this case correctly for preselection.
817 sorf = AU_PRS_FAILURE;
819 sorf = AU_PRS_SUCCESS;
820 class = au_event_class(AUE_CORE);
821 if (au_preselect(AUE_CORE, class, aumask, sorf) == 0 &&
822 audit_pipe_preselect(auid, AUE_CORE, class, sorf, 0) == 0)
826 * If we are interested in seeing this audit record, allocate it.
827 * Where possible coredump records should contain a pathname and arg32
830 ar = audit_new(AUE_CORE, td);
834 pathp = &ar->k_ar.ar_arg_upath1;
835 *pathp = malloc(MAXPATHLEN, M_AUDITPATH, M_WAITOK);
836 audit_canon_path(td, AT_FDCWD, path, *pathp);
837 ARG_SET_VALID(ar, ARG_UPATH1);
839 ar->k_ar.ar_arg_signum = td->td_proc->p_sig;
840 ARG_SET_VALID(ar, ARG_SIGNUM);
843 audit_commit(ar, errcode, ret);