32
33#include <sys/param.h>
34#include <sys/filedesc.h>
35#include <sys/ipc.h>
36#include <sys/mount.h>
37#include <sys/proc.h>
38#include <sys/socket.h>
39#include <sys/socketvar.h>
40#include <sys/protosw.h>
41#include <sys/domain.h>
42#include <sys/sbuf.h>
43#include <sys/systm.h>
44#include <sys/un.h>
45#include <sys/vnode.h>
46
47#include <netinet/in.h>
48#include <netinet/in_pcb.h>
49
50#include <security/audit/audit.h>
51#include <security/audit/audit_private.h>
52
53/*
54 * Calls to manipulate elements of the audit record structure from system
55 * call code. Macro wrappers will prevent this functions from being entered
56 * if auditing is disabled, avoiding the function call cost. We check the
57 * thread audit record pointer anyway, as the audit condition could change,
58 * and pre-selection may not have allocated an audit record for this event.
59 *
60 * XXXAUDIT: Should we assert, in each case, that this field of the record
61 * hasn't already been filled in?
62 */
63void
64audit_arg_addr(void *addr)
65{
66 struct kaudit_record *ar;
67
68 ar = currecord();
69 if (ar == NULL)
70 return;
71
72 ar->k_ar.ar_arg_addr = addr;
73 ARG_SET_VALID(ar, ARG_ADDR);
74}
75
76void
77audit_arg_exit(int status, int retval)
78{
79 struct kaudit_record *ar;
80
81 ar = currecord();
82 if (ar == NULL)
83 return;
84
85 ar->k_ar.ar_arg_exitstatus = status;
86 ar->k_ar.ar_arg_exitretval = retval;
87 ARG_SET_VALID(ar, ARG_EXIT);
88}
89
90void
91audit_arg_len(int len)
92{
93 struct kaudit_record *ar;
94
95 ar = currecord();
96 if (ar == NULL)
97 return;
98
99 ar->k_ar.ar_arg_len = len;
100 ARG_SET_VALID(ar, ARG_LEN);
101}
102
103void
104audit_arg_fd(int fd)
105{
106 struct kaudit_record *ar;
107
108 ar = currecord();
109 if (ar == NULL)
110 return;
111
112 ar->k_ar.ar_arg_fd = fd;
113 ARG_SET_VALID(ar, ARG_FD);
114}
115
116void
117audit_arg_fflags(int fflags)
118{
119 struct kaudit_record *ar;
120
121 ar = currecord();
122 if (ar == NULL)
123 return;
124
125 ar->k_ar.ar_arg_fflags = fflags;
126 ARG_SET_VALID(ar, ARG_FFLAGS);
127}
128
129void
130audit_arg_gid(gid_t gid)
131{
132 struct kaudit_record *ar;
133
134 ar = currecord();
135 if (ar == NULL)
136 return;
137
138 ar->k_ar.ar_arg_gid = gid;
139 ARG_SET_VALID(ar, ARG_GID);
140}
141
142void
143audit_arg_uid(uid_t uid)
144{
145 struct kaudit_record *ar;
146
147 ar = currecord();
148 if (ar == NULL)
149 return;
150
151 ar->k_ar.ar_arg_uid = uid;
152 ARG_SET_VALID(ar, ARG_UID);
153}
154
155void
156audit_arg_egid(gid_t egid)
157{
158 struct kaudit_record *ar;
159
160 ar = currecord();
161 if (ar == NULL)
162 return;
163
164 ar->k_ar.ar_arg_egid = egid;
165 ARG_SET_VALID(ar, ARG_EGID);
166}
167
168void
169audit_arg_euid(uid_t euid)
170{
171 struct kaudit_record *ar;
172
173 ar = currecord();
174 if (ar == NULL)
175 return;
176
177 ar->k_ar.ar_arg_euid = euid;
178 ARG_SET_VALID(ar, ARG_EUID);
179}
180
181void
182audit_arg_rgid(gid_t rgid)
183{
184 struct kaudit_record *ar;
185
186 ar = currecord();
187 if (ar == NULL)
188 return;
189
190 ar->k_ar.ar_arg_rgid = rgid;
191 ARG_SET_VALID(ar, ARG_RGID);
192}
193
194void
195audit_arg_ruid(uid_t ruid)
196{
197 struct kaudit_record *ar;
198
199 ar = currecord();
200 if (ar == NULL)
201 return;
202
203 ar->k_ar.ar_arg_ruid = ruid;
204 ARG_SET_VALID(ar, ARG_RUID);
205}
206
207void
208audit_arg_sgid(gid_t sgid)
209{
210 struct kaudit_record *ar;
211
212 ar = currecord();
213 if (ar == NULL)
214 return;
215
216 ar->k_ar.ar_arg_sgid = sgid;
217 ARG_SET_VALID(ar, ARG_SGID);
218}
219
220void
221audit_arg_suid(uid_t suid)
222{
223 struct kaudit_record *ar;
224
225 ar = currecord();
226 if (ar == NULL)
227 return;
228
229 ar->k_ar.ar_arg_suid = suid;
230 ARG_SET_VALID(ar, ARG_SUID);
231}
232
233void
234audit_arg_groupset(gid_t *gidset, u_int gidset_size)
235{
236 u_int i;
237 struct kaudit_record *ar;
238
239 ar = currecord();
240 if (ar == NULL)
241 return;
242
243 for (i = 0; i < gidset_size; i++)
244 ar->k_ar.ar_arg_groups.gidset[i] = gidset[i];
245 ar->k_ar.ar_arg_groups.gidset_size = gidset_size;
246 ARG_SET_VALID(ar, ARG_GROUPSET);
247}
248
249void
250audit_arg_login(char *login)
251{
252 struct kaudit_record *ar;
253
254 ar = currecord();
255 if (ar == NULL)
256 return;
257
258 strlcpy(ar->k_ar.ar_arg_login, login, MAXLOGNAME);
259 ARG_SET_VALID(ar, ARG_LOGIN);
260}
261
262void
263audit_arg_ctlname(int *name, int namelen)
264{
265 struct kaudit_record *ar;
266
267 ar = currecord();
268 if (ar == NULL)
269 return;
270
271 bcopy(name, &ar->k_ar.ar_arg_ctlname, namelen * sizeof(int));
272 ar->k_ar.ar_arg_len = namelen;
273 ARG_SET_VALID(ar, ARG_CTLNAME | ARG_LEN);
274}
275
276void
277audit_arg_mask(int mask)
278{
279 struct kaudit_record *ar;
280
281 ar = currecord();
282 if (ar == NULL)
283 return;
284
285 ar->k_ar.ar_arg_mask = mask;
286 ARG_SET_VALID(ar, ARG_MASK);
287}
288
289void
290audit_arg_mode(mode_t mode)
291{
292 struct kaudit_record *ar;
293
294 ar = currecord();
295 if (ar == NULL)
296 return;
297
298 ar->k_ar.ar_arg_mode = mode;
299 ARG_SET_VALID(ar, ARG_MODE);
300}
301
302void
303audit_arg_dev(int dev)
304{
305 struct kaudit_record *ar;
306
307 ar = currecord();
308 if (ar == NULL)
309 return;
310
311 ar->k_ar.ar_arg_dev = dev;
312 ARG_SET_VALID(ar, ARG_DEV);
313}
314
315void
316audit_arg_value(long value)
317{
318 struct kaudit_record *ar;
319
320 ar = currecord();
321 if (ar == NULL)
322 return;
323
324 ar->k_ar.ar_arg_value = value;
325 ARG_SET_VALID(ar, ARG_VALUE);
326}
327
328void
329audit_arg_owner(uid_t uid, gid_t gid)
330{
331 struct kaudit_record *ar;
332
333 ar = currecord();
334 if (ar == NULL)
335 return;
336
337 ar->k_ar.ar_arg_uid = uid;
338 ar->k_ar.ar_arg_gid = gid;
339 ARG_SET_VALID(ar, ARG_UID | ARG_GID);
340}
341
342void
343audit_arg_pid(pid_t pid)
344{
345 struct kaudit_record *ar;
346
347 ar = currecord();
348 if (ar == NULL)
349 return;
350
351 ar->k_ar.ar_arg_pid = pid;
352 ARG_SET_VALID(ar, ARG_PID);
353}
354
355void
356audit_arg_process(struct proc *p)
357{
358 struct kaudit_record *ar;
359
360 KASSERT(p != NULL, ("audit_arg_process: p == NULL"));
361
362 PROC_LOCK_ASSERT(p, MA_OWNED);
363
364 ar = currecord();
365 if (ar == NULL)
366 return;
367
368 ar->k_ar.ar_arg_auid = p->p_ucred->cr_audit.ai_auid;
369 ar->k_ar.ar_arg_euid = p->p_ucred->cr_uid;
370 ar->k_ar.ar_arg_egid = p->p_ucred->cr_groups[0];
371 ar->k_ar.ar_arg_ruid = p->p_ucred->cr_ruid;
372 ar->k_ar.ar_arg_rgid = p->p_ucred->cr_rgid;
373 ar->k_ar.ar_arg_asid = p->p_ucred->cr_audit.ai_asid;
374 ar->k_ar.ar_arg_termid_addr = p->p_ucred->cr_audit.ai_termid;
375 ar->k_ar.ar_arg_pid = p->p_pid;
376 ARG_SET_VALID(ar, ARG_AUID | ARG_EUID | ARG_EGID | ARG_RUID |
377 ARG_RGID | ARG_ASID | ARG_TERMID_ADDR | ARG_PID | ARG_PROCESS);
378}
379
380void
381audit_arg_signum(u_int signum)
382{
383 struct kaudit_record *ar;
384
385 ar = currecord();
386 if (ar == NULL)
387 return;
388
389 ar->k_ar.ar_arg_signum = signum;
390 ARG_SET_VALID(ar, ARG_SIGNUM);
391}
392
393void
394audit_arg_socket(int sodomain, int sotype, int soprotocol)
395{
396 struct kaudit_record *ar;
397
398 ar = currecord();
399 if (ar == NULL)
400 return;
401
402 ar->k_ar.ar_arg_sockinfo.so_domain = sodomain;
403 ar->k_ar.ar_arg_sockinfo.so_type = sotype;
404 ar->k_ar.ar_arg_sockinfo.so_protocol = soprotocol;
405 ARG_SET_VALID(ar, ARG_SOCKINFO);
406}
407
408void
409audit_arg_sockaddr(struct thread *td, struct sockaddr *sa)
410{
411 struct kaudit_record *ar;
412
413 KASSERT(td != NULL, ("audit_arg_sockaddr: td == NULL"));
414 KASSERT(sa != NULL, ("audit_arg_sockaddr: sa == NULL"));
415
416 ar = currecord();
417 if (ar == NULL)
418 return;
419
420 bcopy(sa, &ar->k_ar.ar_arg_sockaddr, sa->sa_len);
421 switch (sa->sa_family) {
422 case AF_INET:
423 ARG_SET_VALID(ar, ARG_SADDRINET);
424 break;
425
426 case AF_INET6:
427 ARG_SET_VALID(ar, ARG_SADDRINET6);
428 break;
429
430 case AF_UNIX:
431 audit_arg_upath(td, ((struct sockaddr_un *)sa)->sun_path,
432 ARG_UPATH1);
433 ARG_SET_VALID(ar, ARG_SADDRUNIX);
434 break;
435 /* XXXAUDIT: default:? */
436 }
437}
438
439void
440audit_arg_auid(uid_t auid)
441{
442 struct kaudit_record *ar;
443
444 ar = currecord();
445 if (ar == NULL)
446 return;
447
448 ar->k_ar.ar_arg_auid = auid;
449 ARG_SET_VALID(ar, ARG_AUID);
450}
451
452void
453audit_arg_auditinfo(struct auditinfo *au_info)
454{
455 struct kaudit_record *ar;
456
457 ar = currecord();
458 if (ar == NULL)
459 return;
460
461 ar->k_ar.ar_arg_auid = au_info->ai_auid;
462 ar->k_ar.ar_arg_asid = au_info->ai_asid;
463 ar->k_ar.ar_arg_amask.am_success = au_info->ai_mask.am_success;
464 ar->k_ar.ar_arg_amask.am_failure = au_info->ai_mask.am_failure;
465 ar->k_ar.ar_arg_termid.port = au_info->ai_termid.port;
466 ar->k_ar.ar_arg_termid.machine = au_info->ai_termid.machine;
467 ARG_SET_VALID(ar, ARG_AUID | ARG_ASID | ARG_AMASK | ARG_TERMID);
468}
469
470void
471audit_arg_auditinfo_addr(struct auditinfo_addr *au_info)
472{
473 struct kaudit_record *ar;
474
475 ar = currecord();
476 if (ar == NULL)
477 return;
478
479 ar->k_ar.ar_arg_auid = au_info->ai_auid;
480 ar->k_ar.ar_arg_asid = au_info->ai_asid;
481 ar->k_ar.ar_arg_amask.am_success = au_info->ai_mask.am_success;
482 ar->k_ar.ar_arg_amask.am_failure = au_info->ai_mask.am_failure;
483 ar->k_ar.ar_arg_termid_addr.at_type = au_info->ai_termid.at_type;
484 ar->k_ar.ar_arg_termid_addr.at_port = au_info->ai_termid.at_port;
485 ar->k_ar.ar_arg_termid_addr.at_addr[0] = au_info->ai_termid.at_addr[0];
486 ar->k_ar.ar_arg_termid_addr.at_addr[1] = au_info->ai_termid.at_addr[1];
487 ar->k_ar.ar_arg_termid_addr.at_addr[2] = au_info->ai_termid.at_addr[2];
488 ar->k_ar.ar_arg_termid_addr.at_addr[3] = au_info->ai_termid.at_addr[3];
489 ARG_SET_VALID(ar, ARG_AUID | ARG_ASID | ARG_AMASK | ARG_TERMID_ADDR);
490}
491
492void
493audit_arg_text(char *text)
494{
495 struct kaudit_record *ar;
496
497 KASSERT(text != NULL, ("audit_arg_text: text == NULL"));
498
499 ar = currecord();
500 if (ar == NULL)
501 return;
502
503 /* Invalidate the text string */
504 ar->k_ar.ar_valid_arg &= (ARG_ALL ^ ARG_TEXT);
505
506 if (ar->k_ar.ar_arg_text == NULL)
507 ar->k_ar.ar_arg_text = malloc(MAXPATHLEN, M_AUDITTEXT,
508 M_WAITOK);
509
510 strncpy(ar->k_ar.ar_arg_text, text, MAXPATHLEN);
511 ARG_SET_VALID(ar, ARG_TEXT);
512}
513
514void
515audit_arg_cmd(int cmd)
516{
517 struct kaudit_record *ar;
518
519 ar = currecord();
520 if (ar == NULL)
521 return;
522
523 ar->k_ar.ar_arg_cmd = cmd;
524 ARG_SET_VALID(ar, ARG_CMD);
525}
526
527void
528audit_arg_svipc_cmd(int cmd)
529{
530 struct kaudit_record *ar;
531
532 ar = currecord();
533 if (ar == NULL)
534 return;
535
536 ar->k_ar.ar_arg_svipc_cmd = cmd;
537 ARG_SET_VALID(ar, ARG_SVIPC_CMD);
538}
539
540void
541audit_arg_svipc_perm(struct ipc_perm *perm)
542{
543 struct kaudit_record *ar;
544
545 ar = currecord();
546 if (ar == NULL)
547 return;
548
549 bcopy(perm, &ar->k_ar.ar_arg_svipc_perm,
550 sizeof(ar->k_ar.ar_arg_svipc_perm));
551 ARG_SET_VALID(ar, ARG_SVIPC_PERM);
552}
553
554void
555audit_arg_svipc_id(int id)
556{
557 struct kaudit_record *ar;
558
559 ar = currecord();
560 if (ar == NULL)
561 return;
562
563 ar->k_ar.ar_arg_svipc_id = id;
564 ARG_SET_VALID(ar, ARG_SVIPC_ID);
565}
566
567void
568audit_arg_svipc_addr(void * addr)
569{
570 struct kaudit_record *ar;
571
572 ar = currecord();
573 if (ar == NULL)
574 return;
575
576 ar->k_ar.ar_arg_svipc_addr = addr;
577 ARG_SET_VALID(ar, ARG_SVIPC_ADDR);
578}
579
580void
581audit_arg_posix_ipc_perm(uid_t uid, gid_t gid, mode_t mode)
582{
583 struct kaudit_record *ar;
584
585 ar = currecord();
586 if (ar == NULL)
587 return;
588
589 ar->k_ar.ar_arg_pipc_perm.pipc_uid = uid;
590 ar->k_ar.ar_arg_pipc_perm.pipc_gid = gid;
591 ar->k_ar.ar_arg_pipc_perm.pipc_mode = mode;
592 ARG_SET_VALID(ar, ARG_POSIX_IPC_PERM);
593}
594
595void
596audit_arg_auditon(union auditon_udata *udata)
597{
598 struct kaudit_record *ar;
599
600 ar = currecord();
601 if (ar == NULL)
602 return;
603
604 bcopy((void *)udata, &ar->k_ar.ar_arg_auditon,
605 sizeof(ar->k_ar.ar_arg_auditon));
606 ARG_SET_VALID(ar, ARG_AUDITON);
607}
608
609/*
610 * Audit information about a file, either the file's vnode info, or its
611 * socket address info.
612 */
613void
614audit_arg_file(struct proc *p, struct file *fp)
615{
616 struct kaudit_record *ar;
617 struct socket *so;
618 struct inpcb *pcb;
619 struct vnode *vp;
620 int vfslocked;
621
622 ar = currecord();
623 if (ar == NULL)
624 return;
625
626 switch (fp->f_type) {
627 case DTYPE_VNODE:
628 case DTYPE_FIFO:
629 /*
630 * XXXAUDIT: Only possibly to record as first vnode?
631 */
632 vp = fp->f_vnode;
633 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
634 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
635 audit_arg_vnode(vp, ARG_VNODE1);
636 VOP_UNLOCK(vp, 0);
637 VFS_UNLOCK_GIANT(vfslocked);
638 break;
639
640 case DTYPE_SOCKET:
641 so = (struct socket *)fp->f_data;
642 if (INP_CHECK_SOCKAF(so, PF_INET)) {
643 SOCK_LOCK(so);
644 ar->k_ar.ar_arg_sockinfo.so_type =
645 so->so_type;
646 ar->k_ar.ar_arg_sockinfo.so_domain =
647 INP_SOCKAF(so);
648 ar->k_ar.ar_arg_sockinfo.so_protocol =
649 so->so_proto->pr_protocol;
650 SOCK_UNLOCK(so);
651 pcb = (struct inpcb *)so->so_pcb;
652 INP_RLOCK(pcb);
653 ar->k_ar.ar_arg_sockinfo.so_raddr =
654 pcb->inp_faddr.s_addr;
655 ar->k_ar.ar_arg_sockinfo.so_laddr =
656 pcb->inp_laddr.s_addr;
657 ar->k_ar.ar_arg_sockinfo.so_rport =
658 pcb->inp_fport;
659 ar->k_ar.ar_arg_sockinfo.so_lport =
660 pcb->inp_lport;
661 INP_RUNLOCK(pcb);
662 ARG_SET_VALID(ar, ARG_SOCKINFO);
663 }
664 break;
665
666 default:
667 /* XXXAUDIT: else? */
668 break;
669 }
670}
671
672/*
673 * Store a path as given by the user process for auditing into the audit
674 * record stored on the user thread. This function will allocate the memory
675 * to store the path info if not already available. This memory will be
676 * freed when the audit record is freed.
677 *
678 * XXXAUDIT: Possibly assert that the memory isn't already allocated?
679 */
680void
681audit_arg_upath(struct thread *td, char *upath, u_int64_t flag)
682{
683 struct kaudit_record *ar;
684 char **pathp;
685
686 KASSERT(td != NULL, ("audit_arg_upath: td == NULL"));
687 KASSERT(upath != NULL, ("audit_arg_upath: upath == NULL"));
688
689 ar = currecord();
690 if (ar == NULL)
691 return;
692
693 KASSERT((flag == ARG_UPATH1) || (flag == ARG_UPATH2),
694 ("audit_arg_upath: flag %llu", (unsigned long long)flag));
695 KASSERT((flag != ARG_UPATH1) || (flag != ARG_UPATH2),
696 ("audit_arg_upath: flag %llu", (unsigned long long)flag));
697
698 if (flag == ARG_UPATH1)
699 pathp = &ar->k_ar.ar_arg_upath1;
700 else
701 pathp = &ar->k_ar.ar_arg_upath2;
702
703 if (*pathp == NULL)
704 *pathp = malloc(MAXPATHLEN, M_AUDITPATH, M_WAITOK);
705
706 audit_canon_path(td, upath, *pathp);
707
708 ARG_SET_VALID(ar, flag);
709}
710
711/*
712 * Function to save the path and vnode attr information into the audit
713 * record.
714 *
715 * It is assumed that the caller will hold any vnode locks necessary to
716 * perform a VOP_GETATTR() on the passed vnode.
717 *
718 * XXX: The attr code is very similar to vfs_vnops.c:vn_stat(), but always
719 * provides access to the generation number as we need that to construct the
720 * BSM file ID.
721 *
722 * XXX: We should accept the process argument from the caller, since it's
723 * very likely they already have a reference.
724 *
725 * XXX: Error handling in this function is poor.
726 *
727 * XXXAUDIT: Possibly KASSERT the path pointer is NULL?
728 */
729void
730audit_arg_vnode(struct vnode *vp, u_int64_t flags)
731{
732 struct kaudit_record *ar;
733 struct vattr vattr;
734 int error;
735 struct vnode_au_info *vnp;
736
737 KASSERT(vp != NULL, ("audit_arg_vnode: vp == NULL"));
738 KASSERT((flags == ARG_VNODE1) || (flags == ARG_VNODE2),
739 ("audit_arg_vnode: flags %jd", (intmax_t)flags));
740
741 /*
742 * Assume that if the caller is calling audit_arg_vnode() on a
743 * non-MPSAFE vnode, then it will have acquired Giant.
744 */
745 VFS_ASSERT_GIANT(vp->v_mount);
746 ASSERT_VOP_LOCKED(vp, "audit_arg_vnode");
747
748 ar = currecord();
749 if (ar == NULL)
750 return;
751
752 /*
753 * XXXAUDIT: The below clears, and then resets the flags for valid
754 * arguments. Ideally, either the new vnode is used, or the old one
755 * would be.
756 */
757 if (flags & ARG_VNODE1) {
758 ar->k_ar.ar_valid_arg &= (ARG_ALL ^ ARG_VNODE1);
759 vnp = &ar->k_ar.ar_arg_vnode1;
760 } else {
761 ar->k_ar.ar_valid_arg &= (ARG_ALL ^ ARG_VNODE2);
762 vnp = &ar->k_ar.ar_arg_vnode2;
763 }
764
765 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred, curthread);
766 if (error) {
767 /* XXX: How to handle this case? */
768 return;
769 }
770
771 vnp->vn_mode = vattr.va_mode;
772 vnp->vn_uid = vattr.va_uid;
773 vnp->vn_gid = vattr.va_gid;
774 vnp->vn_dev = vattr.va_rdev;
775 vnp->vn_fsid = vattr.va_fsid;
776 vnp->vn_fileid = vattr.va_fileid;
777 vnp->vn_gen = vattr.va_gen;
778 if (flags & ARG_VNODE1)
779 ARG_SET_VALID(ar, ARG_VNODE1);
780 else
781 ARG_SET_VALID(ar, ARG_VNODE2);
782}
783
784/*
785 * Audit the argument strings passed to exec.
786 */
787void
788audit_arg_argv(char *argv, int argc, int length)
789{
790 struct kaudit_record *ar;
791
792 if (audit_argv == 0)
793 return;
794
795 ar = currecord();
796 if (ar == NULL)
797 return;
798
799 ar->k_ar.ar_arg_argv = malloc(length, M_AUDITTEXT, M_WAITOK);
800 bcopy(argv, ar->k_ar.ar_arg_argv, length);
801 ar->k_ar.ar_arg_argc = argc;
802 ARG_SET_VALID(ar, ARG_ARGV);
803}
804
805/*
806 * Audit the environment strings passed to exec.
807 */
808void
809audit_arg_envv(char *envv, int envc, int length)
810{
811 struct kaudit_record *ar;
812
813 if (audit_arge == 0)
814 return;
815
816 ar = currecord();
817 if (ar == NULL)
818 return;
819
820 ar->k_ar.ar_arg_envv = malloc(length, M_AUDITTEXT, M_WAITOK);
821 bcopy(envv, ar->k_ar.ar_arg_envv, length);
822 ar->k_ar.ar_arg_envc = envc;
823 ARG_SET_VALID(ar, ARG_ENVV);
824}
825
826/*
827 * The close() system call uses it's own audit call to capture the path/vnode
828 * information because those pieces are not easily obtained within the system
829 * call itself.
830 */
831void
832audit_sysclose(struct thread *td, int fd)
833{
834 struct kaudit_record *ar;
835 struct vnode *vp;
836 struct file *fp;
837 int vfslocked;
838
839 KASSERT(td != NULL, ("audit_sysclose: td == NULL"));
840
841 ar = currecord();
842 if (ar == NULL)
843 return;
844
845 audit_arg_fd(fd);
846
847 if (getvnode(td->td_proc->p_fd, fd, &fp) != 0)
848 return;
849
850 vp = fp->f_vnode;
851 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
852 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
853 audit_arg_vnode(vp, ARG_VNODE1);
854 VOP_UNLOCK(vp, 0);
855 VFS_UNLOCK_GIANT(vfslocked);
856 fdrop(fp, td);
857}
| 32
33#include <sys/param.h>
34#include <sys/filedesc.h>
35#include <sys/ipc.h>
36#include <sys/mount.h>
37#include <sys/proc.h>
38#include <sys/socket.h>
39#include <sys/socketvar.h>
40#include <sys/protosw.h>
41#include <sys/domain.h>
42#include <sys/sbuf.h>
43#include <sys/systm.h>
44#include <sys/un.h>
45#include <sys/vnode.h>
46
47#include <netinet/in.h>
48#include <netinet/in_pcb.h>
49
50#include <security/audit/audit.h>
51#include <security/audit/audit_private.h>
52
53/*
54 * Calls to manipulate elements of the audit record structure from system
55 * call code. Macro wrappers will prevent this functions from being entered
56 * if auditing is disabled, avoiding the function call cost. We check the
57 * thread audit record pointer anyway, as the audit condition could change,
58 * and pre-selection may not have allocated an audit record for this event.
59 *
60 * XXXAUDIT: Should we assert, in each case, that this field of the record
61 * hasn't already been filled in?
62 */
63void
64audit_arg_addr(void *addr)
65{
66 struct kaudit_record *ar;
67
68 ar = currecord();
69 if (ar == NULL)
70 return;
71
72 ar->k_ar.ar_arg_addr = addr;
73 ARG_SET_VALID(ar, ARG_ADDR);
74}
75
76void
77audit_arg_exit(int status, int retval)
78{
79 struct kaudit_record *ar;
80
81 ar = currecord();
82 if (ar == NULL)
83 return;
84
85 ar->k_ar.ar_arg_exitstatus = status;
86 ar->k_ar.ar_arg_exitretval = retval;
87 ARG_SET_VALID(ar, ARG_EXIT);
88}
89
90void
91audit_arg_len(int len)
92{
93 struct kaudit_record *ar;
94
95 ar = currecord();
96 if (ar == NULL)
97 return;
98
99 ar->k_ar.ar_arg_len = len;
100 ARG_SET_VALID(ar, ARG_LEN);
101}
102
103void
104audit_arg_fd(int fd)
105{
106 struct kaudit_record *ar;
107
108 ar = currecord();
109 if (ar == NULL)
110 return;
111
112 ar->k_ar.ar_arg_fd = fd;
113 ARG_SET_VALID(ar, ARG_FD);
114}
115
116void
117audit_arg_fflags(int fflags)
118{
119 struct kaudit_record *ar;
120
121 ar = currecord();
122 if (ar == NULL)
123 return;
124
125 ar->k_ar.ar_arg_fflags = fflags;
126 ARG_SET_VALID(ar, ARG_FFLAGS);
127}
128
129void
130audit_arg_gid(gid_t gid)
131{
132 struct kaudit_record *ar;
133
134 ar = currecord();
135 if (ar == NULL)
136 return;
137
138 ar->k_ar.ar_arg_gid = gid;
139 ARG_SET_VALID(ar, ARG_GID);
140}
141
142void
143audit_arg_uid(uid_t uid)
144{
145 struct kaudit_record *ar;
146
147 ar = currecord();
148 if (ar == NULL)
149 return;
150
151 ar->k_ar.ar_arg_uid = uid;
152 ARG_SET_VALID(ar, ARG_UID);
153}
154
155void
156audit_arg_egid(gid_t egid)
157{
158 struct kaudit_record *ar;
159
160 ar = currecord();
161 if (ar == NULL)
162 return;
163
164 ar->k_ar.ar_arg_egid = egid;
165 ARG_SET_VALID(ar, ARG_EGID);
166}
167
168void
169audit_arg_euid(uid_t euid)
170{
171 struct kaudit_record *ar;
172
173 ar = currecord();
174 if (ar == NULL)
175 return;
176
177 ar->k_ar.ar_arg_euid = euid;
178 ARG_SET_VALID(ar, ARG_EUID);
179}
180
181void
182audit_arg_rgid(gid_t rgid)
183{
184 struct kaudit_record *ar;
185
186 ar = currecord();
187 if (ar == NULL)
188 return;
189
190 ar->k_ar.ar_arg_rgid = rgid;
191 ARG_SET_VALID(ar, ARG_RGID);
192}
193
194void
195audit_arg_ruid(uid_t ruid)
196{
197 struct kaudit_record *ar;
198
199 ar = currecord();
200 if (ar == NULL)
201 return;
202
203 ar->k_ar.ar_arg_ruid = ruid;
204 ARG_SET_VALID(ar, ARG_RUID);
205}
206
207void
208audit_arg_sgid(gid_t sgid)
209{
210 struct kaudit_record *ar;
211
212 ar = currecord();
213 if (ar == NULL)
214 return;
215
216 ar->k_ar.ar_arg_sgid = sgid;
217 ARG_SET_VALID(ar, ARG_SGID);
218}
219
220void
221audit_arg_suid(uid_t suid)
222{
223 struct kaudit_record *ar;
224
225 ar = currecord();
226 if (ar == NULL)
227 return;
228
229 ar->k_ar.ar_arg_suid = suid;
230 ARG_SET_VALID(ar, ARG_SUID);
231}
232
233void
234audit_arg_groupset(gid_t *gidset, u_int gidset_size)
235{
236 u_int i;
237 struct kaudit_record *ar;
238
239 ar = currecord();
240 if (ar == NULL)
241 return;
242
243 for (i = 0; i < gidset_size; i++)
244 ar->k_ar.ar_arg_groups.gidset[i] = gidset[i];
245 ar->k_ar.ar_arg_groups.gidset_size = gidset_size;
246 ARG_SET_VALID(ar, ARG_GROUPSET);
247}
248
249void
250audit_arg_login(char *login)
251{
252 struct kaudit_record *ar;
253
254 ar = currecord();
255 if (ar == NULL)
256 return;
257
258 strlcpy(ar->k_ar.ar_arg_login, login, MAXLOGNAME);
259 ARG_SET_VALID(ar, ARG_LOGIN);
260}
261
262void
263audit_arg_ctlname(int *name, int namelen)
264{
265 struct kaudit_record *ar;
266
267 ar = currecord();
268 if (ar == NULL)
269 return;
270
271 bcopy(name, &ar->k_ar.ar_arg_ctlname, namelen * sizeof(int));
272 ar->k_ar.ar_arg_len = namelen;
273 ARG_SET_VALID(ar, ARG_CTLNAME | ARG_LEN);
274}
275
276void
277audit_arg_mask(int mask)
278{
279 struct kaudit_record *ar;
280
281 ar = currecord();
282 if (ar == NULL)
283 return;
284
285 ar->k_ar.ar_arg_mask = mask;
286 ARG_SET_VALID(ar, ARG_MASK);
287}
288
289void
290audit_arg_mode(mode_t mode)
291{
292 struct kaudit_record *ar;
293
294 ar = currecord();
295 if (ar == NULL)
296 return;
297
298 ar->k_ar.ar_arg_mode = mode;
299 ARG_SET_VALID(ar, ARG_MODE);
300}
301
302void
303audit_arg_dev(int dev)
304{
305 struct kaudit_record *ar;
306
307 ar = currecord();
308 if (ar == NULL)
309 return;
310
311 ar->k_ar.ar_arg_dev = dev;
312 ARG_SET_VALID(ar, ARG_DEV);
313}
314
315void
316audit_arg_value(long value)
317{
318 struct kaudit_record *ar;
319
320 ar = currecord();
321 if (ar == NULL)
322 return;
323
324 ar->k_ar.ar_arg_value = value;
325 ARG_SET_VALID(ar, ARG_VALUE);
326}
327
328void
329audit_arg_owner(uid_t uid, gid_t gid)
330{
331 struct kaudit_record *ar;
332
333 ar = currecord();
334 if (ar == NULL)
335 return;
336
337 ar->k_ar.ar_arg_uid = uid;
338 ar->k_ar.ar_arg_gid = gid;
339 ARG_SET_VALID(ar, ARG_UID | ARG_GID);
340}
341
342void
343audit_arg_pid(pid_t pid)
344{
345 struct kaudit_record *ar;
346
347 ar = currecord();
348 if (ar == NULL)
349 return;
350
351 ar->k_ar.ar_arg_pid = pid;
352 ARG_SET_VALID(ar, ARG_PID);
353}
354
355void
356audit_arg_process(struct proc *p)
357{
358 struct kaudit_record *ar;
359
360 KASSERT(p != NULL, ("audit_arg_process: p == NULL"));
361
362 PROC_LOCK_ASSERT(p, MA_OWNED);
363
364 ar = currecord();
365 if (ar == NULL)
366 return;
367
368 ar->k_ar.ar_arg_auid = p->p_ucred->cr_audit.ai_auid;
369 ar->k_ar.ar_arg_euid = p->p_ucred->cr_uid;
370 ar->k_ar.ar_arg_egid = p->p_ucred->cr_groups[0];
371 ar->k_ar.ar_arg_ruid = p->p_ucred->cr_ruid;
372 ar->k_ar.ar_arg_rgid = p->p_ucred->cr_rgid;
373 ar->k_ar.ar_arg_asid = p->p_ucred->cr_audit.ai_asid;
374 ar->k_ar.ar_arg_termid_addr = p->p_ucred->cr_audit.ai_termid;
375 ar->k_ar.ar_arg_pid = p->p_pid;
376 ARG_SET_VALID(ar, ARG_AUID | ARG_EUID | ARG_EGID | ARG_RUID |
377 ARG_RGID | ARG_ASID | ARG_TERMID_ADDR | ARG_PID | ARG_PROCESS);
378}
379
380void
381audit_arg_signum(u_int signum)
382{
383 struct kaudit_record *ar;
384
385 ar = currecord();
386 if (ar == NULL)
387 return;
388
389 ar->k_ar.ar_arg_signum = signum;
390 ARG_SET_VALID(ar, ARG_SIGNUM);
391}
392
393void
394audit_arg_socket(int sodomain, int sotype, int soprotocol)
395{
396 struct kaudit_record *ar;
397
398 ar = currecord();
399 if (ar == NULL)
400 return;
401
402 ar->k_ar.ar_arg_sockinfo.so_domain = sodomain;
403 ar->k_ar.ar_arg_sockinfo.so_type = sotype;
404 ar->k_ar.ar_arg_sockinfo.so_protocol = soprotocol;
405 ARG_SET_VALID(ar, ARG_SOCKINFO);
406}
407
408void
409audit_arg_sockaddr(struct thread *td, struct sockaddr *sa)
410{
411 struct kaudit_record *ar;
412
413 KASSERT(td != NULL, ("audit_arg_sockaddr: td == NULL"));
414 KASSERT(sa != NULL, ("audit_arg_sockaddr: sa == NULL"));
415
416 ar = currecord();
417 if (ar == NULL)
418 return;
419
420 bcopy(sa, &ar->k_ar.ar_arg_sockaddr, sa->sa_len);
421 switch (sa->sa_family) {
422 case AF_INET:
423 ARG_SET_VALID(ar, ARG_SADDRINET);
424 break;
425
426 case AF_INET6:
427 ARG_SET_VALID(ar, ARG_SADDRINET6);
428 break;
429
430 case AF_UNIX:
431 audit_arg_upath(td, ((struct sockaddr_un *)sa)->sun_path,
432 ARG_UPATH1);
433 ARG_SET_VALID(ar, ARG_SADDRUNIX);
434 break;
435 /* XXXAUDIT: default:? */
436 }
437}
438
439void
440audit_arg_auid(uid_t auid)
441{
442 struct kaudit_record *ar;
443
444 ar = currecord();
445 if (ar == NULL)
446 return;
447
448 ar->k_ar.ar_arg_auid = auid;
449 ARG_SET_VALID(ar, ARG_AUID);
450}
451
452void
453audit_arg_auditinfo(struct auditinfo *au_info)
454{
455 struct kaudit_record *ar;
456
457 ar = currecord();
458 if (ar == NULL)
459 return;
460
461 ar->k_ar.ar_arg_auid = au_info->ai_auid;
462 ar->k_ar.ar_arg_asid = au_info->ai_asid;
463 ar->k_ar.ar_arg_amask.am_success = au_info->ai_mask.am_success;
464 ar->k_ar.ar_arg_amask.am_failure = au_info->ai_mask.am_failure;
465 ar->k_ar.ar_arg_termid.port = au_info->ai_termid.port;
466 ar->k_ar.ar_arg_termid.machine = au_info->ai_termid.machine;
467 ARG_SET_VALID(ar, ARG_AUID | ARG_ASID | ARG_AMASK | ARG_TERMID);
468}
469
470void
471audit_arg_auditinfo_addr(struct auditinfo_addr *au_info)
472{
473 struct kaudit_record *ar;
474
475 ar = currecord();
476 if (ar == NULL)
477 return;
478
479 ar->k_ar.ar_arg_auid = au_info->ai_auid;
480 ar->k_ar.ar_arg_asid = au_info->ai_asid;
481 ar->k_ar.ar_arg_amask.am_success = au_info->ai_mask.am_success;
482 ar->k_ar.ar_arg_amask.am_failure = au_info->ai_mask.am_failure;
483 ar->k_ar.ar_arg_termid_addr.at_type = au_info->ai_termid.at_type;
484 ar->k_ar.ar_arg_termid_addr.at_port = au_info->ai_termid.at_port;
485 ar->k_ar.ar_arg_termid_addr.at_addr[0] = au_info->ai_termid.at_addr[0];
486 ar->k_ar.ar_arg_termid_addr.at_addr[1] = au_info->ai_termid.at_addr[1];
487 ar->k_ar.ar_arg_termid_addr.at_addr[2] = au_info->ai_termid.at_addr[2];
488 ar->k_ar.ar_arg_termid_addr.at_addr[3] = au_info->ai_termid.at_addr[3];
489 ARG_SET_VALID(ar, ARG_AUID | ARG_ASID | ARG_AMASK | ARG_TERMID_ADDR);
490}
491
492void
493audit_arg_text(char *text)
494{
495 struct kaudit_record *ar;
496
497 KASSERT(text != NULL, ("audit_arg_text: text == NULL"));
498
499 ar = currecord();
500 if (ar == NULL)
501 return;
502
503 /* Invalidate the text string */
504 ar->k_ar.ar_valid_arg &= (ARG_ALL ^ ARG_TEXT);
505
506 if (ar->k_ar.ar_arg_text == NULL)
507 ar->k_ar.ar_arg_text = malloc(MAXPATHLEN, M_AUDITTEXT,
508 M_WAITOK);
509
510 strncpy(ar->k_ar.ar_arg_text, text, MAXPATHLEN);
511 ARG_SET_VALID(ar, ARG_TEXT);
512}
513
514void
515audit_arg_cmd(int cmd)
516{
517 struct kaudit_record *ar;
518
519 ar = currecord();
520 if (ar == NULL)
521 return;
522
523 ar->k_ar.ar_arg_cmd = cmd;
524 ARG_SET_VALID(ar, ARG_CMD);
525}
526
527void
528audit_arg_svipc_cmd(int cmd)
529{
530 struct kaudit_record *ar;
531
532 ar = currecord();
533 if (ar == NULL)
534 return;
535
536 ar->k_ar.ar_arg_svipc_cmd = cmd;
537 ARG_SET_VALID(ar, ARG_SVIPC_CMD);
538}
539
540void
541audit_arg_svipc_perm(struct ipc_perm *perm)
542{
543 struct kaudit_record *ar;
544
545 ar = currecord();
546 if (ar == NULL)
547 return;
548
549 bcopy(perm, &ar->k_ar.ar_arg_svipc_perm,
550 sizeof(ar->k_ar.ar_arg_svipc_perm));
551 ARG_SET_VALID(ar, ARG_SVIPC_PERM);
552}
553
554void
555audit_arg_svipc_id(int id)
556{
557 struct kaudit_record *ar;
558
559 ar = currecord();
560 if (ar == NULL)
561 return;
562
563 ar->k_ar.ar_arg_svipc_id = id;
564 ARG_SET_VALID(ar, ARG_SVIPC_ID);
565}
566
567void
568audit_arg_svipc_addr(void * addr)
569{
570 struct kaudit_record *ar;
571
572 ar = currecord();
573 if (ar == NULL)
574 return;
575
576 ar->k_ar.ar_arg_svipc_addr = addr;
577 ARG_SET_VALID(ar, ARG_SVIPC_ADDR);
578}
579
580void
581audit_arg_posix_ipc_perm(uid_t uid, gid_t gid, mode_t mode)
582{
583 struct kaudit_record *ar;
584
585 ar = currecord();
586 if (ar == NULL)
587 return;
588
589 ar->k_ar.ar_arg_pipc_perm.pipc_uid = uid;
590 ar->k_ar.ar_arg_pipc_perm.pipc_gid = gid;
591 ar->k_ar.ar_arg_pipc_perm.pipc_mode = mode;
592 ARG_SET_VALID(ar, ARG_POSIX_IPC_PERM);
593}
594
595void
596audit_arg_auditon(union auditon_udata *udata)
597{
598 struct kaudit_record *ar;
599
600 ar = currecord();
601 if (ar == NULL)
602 return;
603
604 bcopy((void *)udata, &ar->k_ar.ar_arg_auditon,
605 sizeof(ar->k_ar.ar_arg_auditon));
606 ARG_SET_VALID(ar, ARG_AUDITON);
607}
608
609/*
610 * Audit information about a file, either the file's vnode info, or its
611 * socket address info.
612 */
613void
614audit_arg_file(struct proc *p, struct file *fp)
615{
616 struct kaudit_record *ar;
617 struct socket *so;
618 struct inpcb *pcb;
619 struct vnode *vp;
620 int vfslocked;
621
622 ar = currecord();
623 if (ar == NULL)
624 return;
625
626 switch (fp->f_type) {
627 case DTYPE_VNODE:
628 case DTYPE_FIFO:
629 /*
630 * XXXAUDIT: Only possibly to record as first vnode?
631 */
632 vp = fp->f_vnode;
633 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
634 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
635 audit_arg_vnode(vp, ARG_VNODE1);
636 VOP_UNLOCK(vp, 0);
637 VFS_UNLOCK_GIANT(vfslocked);
638 break;
639
640 case DTYPE_SOCKET:
641 so = (struct socket *)fp->f_data;
642 if (INP_CHECK_SOCKAF(so, PF_INET)) {
643 SOCK_LOCK(so);
644 ar->k_ar.ar_arg_sockinfo.so_type =
645 so->so_type;
646 ar->k_ar.ar_arg_sockinfo.so_domain =
647 INP_SOCKAF(so);
648 ar->k_ar.ar_arg_sockinfo.so_protocol =
649 so->so_proto->pr_protocol;
650 SOCK_UNLOCK(so);
651 pcb = (struct inpcb *)so->so_pcb;
652 INP_RLOCK(pcb);
653 ar->k_ar.ar_arg_sockinfo.so_raddr =
654 pcb->inp_faddr.s_addr;
655 ar->k_ar.ar_arg_sockinfo.so_laddr =
656 pcb->inp_laddr.s_addr;
657 ar->k_ar.ar_arg_sockinfo.so_rport =
658 pcb->inp_fport;
659 ar->k_ar.ar_arg_sockinfo.so_lport =
660 pcb->inp_lport;
661 INP_RUNLOCK(pcb);
662 ARG_SET_VALID(ar, ARG_SOCKINFO);
663 }
664 break;
665
666 default:
667 /* XXXAUDIT: else? */
668 break;
669 }
670}
671
672/*
673 * Store a path as given by the user process for auditing into the audit
674 * record stored on the user thread. This function will allocate the memory
675 * to store the path info if not already available. This memory will be
676 * freed when the audit record is freed.
677 *
678 * XXXAUDIT: Possibly assert that the memory isn't already allocated?
679 */
680void
681audit_arg_upath(struct thread *td, char *upath, u_int64_t flag)
682{
683 struct kaudit_record *ar;
684 char **pathp;
685
686 KASSERT(td != NULL, ("audit_arg_upath: td == NULL"));
687 KASSERT(upath != NULL, ("audit_arg_upath: upath == NULL"));
688
689 ar = currecord();
690 if (ar == NULL)
691 return;
692
693 KASSERT((flag == ARG_UPATH1) || (flag == ARG_UPATH2),
694 ("audit_arg_upath: flag %llu", (unsigned long long)flag));
695 KASSERT((flag != ARG_UPATH1) || (flag != ARG_UPATH2),
696 ("audit_arg_upath: flag %llu", (unsigned long long)flag));
697
698 if (flag == ARG_UPATH1)
699 pathp = &ar->k_ar.ar_arg_upath1;
700 else
701 pathp = &ar->k_ar.ar_arg_upath2;
702
703 if (*pathp == NULL)
704 *pathp = malloc(MAXPATHLEN, M_AUDITPATH, M_WAITOK);
705
706 audit_canon_path(td, upath, *pathp);
707
708 ARG_SET_VALID(ar, flag);
709}
710
711/*
712 * Function to save the path and vnode attr information into the audit
713 * record.
714 *
715 * It is assumed that the caller will hold any vnode locks necessary to
716 * perform a VOP_GETATTR() on the passed vnode.
717 *
718 * XXX: The attr code is very similar to vfs_vnops.c:vn_stat(), but always
719 * provides access to the generation number as we need that to construct the
720 * BSM file ID.
721 *
722 * XXX: We should accept the process argument from the caller, since it's
723 * very likely they already have a reference.
724 *
725 * XXX: Error handling in this function is poor.
726 *
727 * XXXAUDIT: Possibly KASSERT the path pointer is NULL?
728 */
729void
730audit_arg_vnode(struct vnode *vp, u_int64_t flags)
731{
732 struct kaudit_record *ar;
733 struct vattr vattr;
734 int error;
735 struct vnode_au_info *vnp;
736
737 KASSERT(vp != NULL, ("audit_arg_vnode: vp == NULL"));
738 KASSERT((flags == ARG_VNODE1) || (flags == ARG_VNODE2),
739 ("audit_arg_vnode: flags %jd", (intmax_t)flags));
740
741 /*
742 * Assume that if the caller is calling audit_arg_vnode() on a
743 * non-MPSAFE vnode, then it will have acquired Giant.
744 */
745 VFS_ASSERT_GIANT(vp->v_mount);
746 ASSERT_VOP_LOCKED(vp, "audit_arg_vnode");
747
748 ar = currecord();
749 if (ar == NULL)
750 return;
751
752 /*
753 * XXXAUDIT: The below clears, and then resets the flags for valid
754 * arguments. Ideally, either the new vnode is used, or the old one
755 * would be.
756 */
757 if (flags & ARG_VNODE1) {
758 ar->k_ar.ar_valid_arg &= (ARG_ALL ^ ARG_VNODE1);
759 vnp = &ar->k_ar.ar_arg_vnode1;
760 } else {
761 ar->k_ar.ar_valid_arg &= (ARG_ALL ^ ARG_VNODE2);
762 vnp = &ar->k_ar.ar_arg_vnode2;
763 }
764
765 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred, curthread);
766 if (error) {
767 /* XXX: How to handle this case? */
768 return;
769 }
770
771 vnp->vn_mode = vattr.va_mode;
772 vnp->vn_uid = vattr.va_uid;
773 vnp->vn_gid = vattr.va_gid;
774 vnp->vn_dev = vattr.va_rdev;
775 vnp->vn_fsid = vattr.va_fsid;
776 vnp->vn_fileid = vattr.va_fileid;
777 vnp->vn_gen = vattr.va_gen;
778 if (flags & ARG_VNODE1)
779 ARG_SET_VALID(ar, ARG_VNODE1);
780 else
781 ARG_SET_VALID(ar, ARG_VNODE2);
782}
783
784/*
785 * Audit the argument strings passed to exec.
786 */
787void
788audit_arg_argv(char *argv, int argc, int length)
789{
790 struct kaudit_record *ar;
791
792 if (audit_argv == 0)
793 return;
794
795 ar = currecord();
796 if (ar == NULL)
797 return;
798
799 ar->k_ar.ar_arg_argv = malloc(length, M_AUDITTEXT, M_WAITOK);
800 bcopy(argv, ar->k_ar.ar_arg_argv, length);
801 ar->k_ar.ar_arg_argc = argc;
802 ARG_SET_VALID(ar, ARG_ARGV);
803}
804
805/*
806 * Audit the environment strings passed to exec.
807 */
808void
809audit_arg_envv(char *envv, int envc, int length)
810{
811 struct kaudit_record *ar;
812
813 if (audit_arge == 0)
814 return;
815
816 ar = currecord();
817 if (ar == NULL)
818 return;
819
820 ar->k_ar.ar_arg_envv = malloc(length, M_AUDITTEXT, M_WAITOK);
821 bcopy(envv, ar->k_ar.ar_arg_envv, length);
822 ar->k_ar.ar_arg_envc = envc;
823 ARG_SET_VALID(ar, ARG_ENVV);
824}
825
826/*
827 * The close() system call uses it's own audit call to capture the path/vnode
828 * information because those pieces are not easily obtained within the system
829 * call itself.
830 */
831void
832audit_sysclose(struct thread *td, int fd)
833{
834 struct kaudit_record *ar;
835 struct vnode *vp;
836 struct file *fp;
837 int vfslocked;
838
839 KASSERT(td != NULL, ("audit_sysclose: td == NULL"));
840
841 ar = currecord();
842 if (ar == NULL)
843 return;
844
845 audit_arg_fd(fd);
846
847 if (getvnode(td->td_proc->p_fd, fd, &fp) != 0)
848 return;
849
850 vp = fp->f_vnode;
851 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
852 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
853 audit_arg_vnode(vp, ARG_VNODE1);
854 VOP_UNLOCK(vp, 0);
855 VFS_UNLOCK_GIANT(vfslocked);
856 fdrop(fp, td);
857}
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