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-rw-r--r--kernel/auditsc.c716
1 files changed, 577 insertions, 139 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 1c03a4ed1b27..ae40ac8c39e7 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -3,7 +3,7 @@
3 * 3 *
4 * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina. 4 * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
5 * Copyright 2005 Hewlett-Packard Development Company, L.P. 5 * Copyright 2005 Hewlett-Packard Development Company, L.P.
6 * Copyright (C) 2005 IBM Corporation 6 * Copyright (C) 2005, 2006 IBM Corporation
7 * All Rights Reserved. 7 * All Rights Reserved.
8 * 8 *
9 * This program is free software; you can redistribute it and/or modify 9 * This program is free software; you can redistribute it and/or modify
@@ -29,6 +29,9 @@
29 * this file -- see entry.S) is based on a GPL'd patch written by 29 * this file -- see entry.S) is based on a GPL'd patch written by
30 * okir@suse.de and Copyright 2003 SuSE Linux AG. 30 * okir@suse.de and Copyright 2003 SuSE Linux AG.
31 * 31 *
32 * POSIX message queue support added by George Wilson <ltcgcw@us.ibm.com>,
33 * 2006.
34 *
32 * The support of additional filter rules compares (>, <, >=, <=) was 35 * The support of additional filter rules compares (>, <, >=, <=) was
33 * added by Dustin Kirkland <dustin.kirkland@us.ibm.com>, 2005. 36 * added by Dustin Kirkland <dustin.kirkland@us.ibm.com>, 2005.
34 * 37 *
@@ -49,6 +52,7 @@
49#include <linux/module.h> 52#include <linux/module.h>
50#include <linux/mount.h> 53#include <linux/mount.h>
51#include <linux/socket.h> 54#include <linux/socket.h>
55#include <linux/mqueue.h>
52#include <linux/audit.h> 56#include <linux/audit.h>
53#include <linux/personality.h> 57#include <linux/personality.h>
54#include <linux/time.h> 58#include <linux/time.h>
@@ -59,6 +63,8 @@
59#include <linux/list.h> 63#include <linux/list.h>
60#include <linux/tty.h> 64#include <linux/tty.h>
61#include <linux/selinux.h> 65#include <linux/selinux.h>
66#include <linux/binfmts.h>
67#include <linux/syscalls.h>
62 68
63#include "audit.h" 69#include "audit.h"
64 70
@@ -76,6 +82,9 @@ extern int audit_enabled;
76 * path_lookup. */ 82 * path_lookup. */
77#define AUDIT_NAMES_RESERVED 7 83#define AUDIT_NAMES_RESERVED 7
78 84
85/* Indicates that audit should log the full pathname. */
86#define AUDIT_NAME_FULL -1
87
79/* When fs/namei.c:getname() is called, we store the pointer in name and 88/* When fs/namei.c:getname() is called, we store the pointer in name and
80 * we don't let putname() free it (instead we free all of the saved 89 * we don't let putname() free it (instead we free all of the saved
81 * pointers at syscall exit time). 90 * pointers at syscall exit time).
@@ -83,8 +92,9 @@ extern int audit_enabled;
83 * Further, in fs/namei.c:path_lookup() we store the inode and device. */ 92 * Further, in fs/namei.c:path_lookup() we store the inode and device. */
84struct audit_names { 93struct audit_names {
85 const char *name; 94 const char *name;
95 int name_len; /* number of name's characters to log */
96 unsigned name_put; /* call __putname() for this name */
86 unsigned long ino; 97 unsigned long ino;
87 unsigned long pino;
88 dev_t dev; 98 dev_t dev;
89 umode_t mode; 99 umode_t mode;
90 uid_t uid; 100 uid_t uid;
@@ -100,6 +110,33 @@ struct audit_aux_data {
100 110
101#define AUDIT_AUX_IPCPERM 0 111#define AUDIT_AUX_IPCPERM 0
102 112
113struct audit_aux_data_mq_open {
114 struct audit_aux_data d;
115 int oflag;
116 mode_t mode;
117 struct mq_attr attr;
118};
119
120struct audit_aux_data_mq_sendrecv {
121 struct audit_aux_data d;
122 mqd_t mqdes;
123 size_t msg_len;
124 unsigned int msg_prio;
125 struct timespec abs_timeout;
126};
127
128struct audit_aux_data_mq_notify {
129 struct audit_aux_data d;
130 mqd_t mqdes;
131 struct sigevent notification;
132};
133
134struct audit_aux_data_mq_getsetattr {
135 struct audit_aux_data d;
136 mqd_t mqdes;
137 struct mq_attr mqstat;
138};
139
103struct audit_aux_data_ipcctl { 140struct audit_aux_data_ipcctl {
104 struct audit_aux_data d; 141 struct audit_aux_data d;
105 struct ipc_perm p; 142 struct ipc_perm p;
@@ -110,6 +147,13 @@ struct audit_aux_data_ipcctl {
110 u32 osid; 147 u32 osid;
111}; 148};
112 149
150struct audit_aux_data_execve {
151 struct audit_aux_data d;
152 int argc;
153 int envc;
154 char mem[0];
155};
156
113struct audit_aux_data_socketcall { 157struct audit_aux_data_socketcall {
114 struct audit_aux_data d; 158 struct audit_aux_data d;
115 int nargs; 159 int nargs;
@@ -142,13 +186,14 @@ struct audit_context {
142 int auditable; /* 1 if record should be written */ 186 int auditable; /* 1 if record should be written */
143 int name_count; 187 int name_count;
144 struct audit_names names[AUDIT_NAMES]; 188 struct audit_names names[AUDIT_NAMES];
189 char * filterkey; /* key for rule that triggered record */
145 struct dentry * pwd; 190 struct dentry * pwd;
146 struct vfsmount * pwdmnt; 191 struct vfsmount * pwdmnt;
147 struct audit_context *previous; /* For nested syscalls */ 192 struct audit_context *previous; /* For nested syscalls */
148 struct audit_aux_data *aux; 193 struct audit_aux_data *aux;
149 194
150 /* Save things to print about task_struct */ 195 /* Save things to print about task_struct */
151 pid_t pid; 196 pid_t pid, ppid;
152 uid_t uid, euid, suid, fsuid; 197 uid_t uid, euid, suid, fsuid;
153 gid_t gid, egid, sgid, fsgid; 198 gid_t gid, egid, sgid, fsgid;
154 unsigned long personality; 199 unsigned long personality;
@@ -160,12 +205,13 @@ struct audit_context {
160#endif 205#endif
161}; 206};
162 207
163 208/* Determine if any context name data matches a rule's watch data */
164/* Compare a task_struct with an audit_rule. Return 1 on match, 0 209/* Compare a task_struct with an audit_rule. Return 1 on match, 0
165 * otherwise. */ 210 * otherwise. */
166static int audit_filter_rules(struct task_struct *tsk, 211static int audit_filter_rules(struct task_struct *tsk,
167 struct audit_krule *rule, 212 struct audit_krule *rule,
168 struct audit_context *ctx, 213 struct audit_context *ctx,
214 struct audit_names *name,
169 enum audit_state *state) 215 enum audit_state *state)
170{ 216{
171 int i, j, need_sid = 1; 217 int i, j, need_sid = 1;
@@ -179,6 +225,10 @@ static int audit_filter_rules(struct task_struct *tsk,
179 case AUDIT_PID: 225 case AUDIT_PID:
180 result = audit_comparator(tsk->pid, f->op, f->val); 226 result = audit_comparator(tsk->pid, f->op, f->val);
181 break; 227 break;
228 case AUDIT_PPID:
229 if (ctx)
230 result = audit_comparator(ctx->ppid, f->op, f->val);
231 break;
182 case AUDIT_UID: 232 case AUDIT_UID:
183 result = audit_comparator(tsk->uid, f->op, f->val); 233 result = audit_comparator(tsk->uid, f->op, f->val);
184 break; 234 break;
@@ -224,7 +274,10 @@ static int audit_filter_rules(struct task_struct *tsk,
224 } 274 }
225 break; 275 break;
226 case AUDIT_DEVMAJOR: 276 case AUDIT_DEVMAJOR:
227 if (ctx) { 277 if (name)
278 result = audit_comparator(MAJOR(name->dev),
279 f->op, f->val);
280 else if (ctx) {
228 for (j = 0; j < ctx->name_count; j++) { 281 for (j = 0; j < ctx->name_count; j++) {
229 if (audit_comparator(MAJOR(ctx->names[j].dev), f->op, f->val)) { 282 if (audit_comparator(MAJOR(ctx->names[j].dev), f->op, f->val)) {
230 ++result; 283 ++result;
@@ -234,7 +287,10 @@ static int audit_filter_rules(struct task_struct *tsk,
234 } 287 }
235 break; 288 break;
236 case AUDIT_DEVMINOR: 289 case AUDIT_DEVMINOR:
237 if (ctx) { 290 if (name)
291 result = audit_comparator(MINOR(name->dev),
292 f->op, f->val);
293 else if (ctx) {
238 for (j = 0; j < ctx->name_count; j++) { 294 for (j = 0; j < ctx->name_count; j++) {
239 if (audit_comparator(MINOR(ctx->names[j].dev), f->op, f->val)) { 295 if (audit_comparator(MINOR(ctx->names[j].dev), f->op, f->val)) {
240 ++result; 296 ++result;
@@ -244,26 +300,32 @@ static int audit_filter_rules(struct task_struct *tsk,
244 } 300 }
245 break; 301 break;
246 case AUDIT_INODE: 302 case AUDIT_INODE:
247 if (ctx) { 303 if (name)
304 result = (name->ino == f->val);
305 else if (ctx) {
248 for (j = 0; j < ctx->name_count; j++) { 306 for (j = 0; j < ctx->name_count; j++) {
249 if (audit_comparator(ctx->names[j].ino, f->op, f->val) || 307 if (audit_comparator(ctx->names[j].ino, f->op, f->val)) {
250 audit_comparator(ctx->names[j].pino, f->op, f->val)) {
251 ++result; 308 ++result;
252 break; 309 break;
253 } 310 }
254 } 311 }
255 } 312 }
256 break; 313 break;
314 case AUDIT_WATCH:
315 if (name && rule->watch->ino != (unsigned long)-1)
316 result = (name->dev == rule->watch->dev &&
317 name->ino == rule->watch->ino);
318 break;
257 case AUDIT_LOGINUID: 319 case AUDIT_LOGINUID:
258 result = 0; 320 result = 0;
259 if (ctx) 321 if (ctx)
260 result = audit_comparator(ctx->loginuid, f->op, f->val); 322 result = audit_comparator(ctx->loginuid, f->op, f->val);
261 break; 323 break;
262 case AUDIT_SE_USER: 324 case AUDIT_SUBJ_USER:
263 case AUDIT_SE_ROLE: 325 case AUDIT_SUBJ_ROLE:
264 case AUDIT_SE_TYPE: 326 case AUDIT_SUBJ_TYPE:
265 case AUDIT_SE_SEN: 327 case AUDIT_SUBJ_SEN:
266 case AUDIT_SE_CLR: 328 case AUDIT_SUBJ_CLR:
267 /* NOTE: this may return negative values indicating 329 /* NOTE: this may return negative values indicating
268 a temporary error. We simply treat this as a 330 a temporary error. We simply treat this as a
269 match for now to avoid losing information that 331 match for now to avoid losing information that
@@ -280,6 +342,46 @@ static int audit_filter_rules(struct task_struct *tsk,
280 ctx); 342 ctx);
281 } 343 }
282 break; 344 break;
345 case AUDIT_OBJ_USER:
346 case AUDIT_OBJ_ROLE:
347 case AUDIT_OBJ_TYPE:
348 case AUDIT_OBJ_LEV_LOW:
349 case AUDIT_OBJ_LEV_HIGH:
350 /* The above note for AUDIT_SUBJ_USER...AUDIT_SUBJ_CLR
351 also applies here */
352 if (f->se_rule) {
353 /* Find files that match */
354 if (name) {
355 result = selinux_audit_rule_match(
356 name->osid, f->type, f->op,
357 f->se_rule, ctx);
358 } else if (ctx) {
359 for (j = 0; j < ctx->name_count; j++) {
360 if (selinux_audit_rule_match(
361 ctx->names[j].osid,
362 f->type, f->op,
363 f->se_rule, ctx)) {
364 ++result;
365 break;
366 }
367 }
368 }
369 /* Find ipc objects that match */
370 if (ctx) {
371 struct audit_aux_data *aux;
372 for (aux = ctx->aux; aux;
373 aux = aux->next) {
374 if (aux->type == AUDIT_IPC) {
375 struct audit_aux_data_ipcctl *axi = (void *)aux;
376 if (selinux_audit_rule_match(axi->osid, f->type, f->op, f->se_rule, ctx)) {
377 ++result;
378 break;
379 }
380 }
381 }
382 }
383 }
384 break;
283 case AUDIT_ARG0: 385 case AUDIT_ARG0:
284 case AUDIT_ARG1: 386 case AUDIT_ARG1:
285 case AUDIT_ARG2: 387 case AUDIT_ARG2:
@@ -287,14 +389,19 @@ static int audit_filter_rules(struct task_struct *tsk,
287 if (ctx) 389 if (ctx)
288 result = audit_comparator(ctx->argv[f->type-AUDIT_ARG0], f->op, f->val); 390 result = audit_comparator(ctx->argv[f->type-AUDIT_ARG0], f->op, f->val);
289 break; 391 break;
392 case AUDIT_FILTERKEY:
393 /* ignore this field for filtering */
394 result = 1;
395 break;
290 } 396 }
291 397
292 if (!result) 398 if (!result)
293 return 0; 399 return 0;
294 } 400 }
401 if (rule->filterkey)
402 ctx->filterkey = kstrdup(rule->filterkey, GFP_ATOMIC);
295 switch (rule->action) { 403 switch (rule->action) {
296 case AUDIT_NEVER: *state = AUDIT_DISABLED; break; 404 case AUDIT_NEVER: *state = AUDIT_DISABLED; break;
297 case AUDIT_POSSIBLE: *state = AUDIT_BUILD_CONTEXT; break;
298 case AUDIT_ALWAYS: *state = AUDIT_RECORD_CONTEXT; break; 405 case AUDIT_ALWAYS: *state = AUDIT_RECORD_CONTEXT; break;
299 } 406 }
300 return 1; 407 return 1;
@@ -311,7 +418,7 @@ static enum audit_state audit_filter_task(struct task_struct *tsk)
311 418
312 rcu_read_lock(); 419 rcu_read_lock();
313 list_for_each_entry_rcu(e, &audit_filter_list[AUDIT_FILTER_TASK], list) { 420 list_for_each_entry_rcu(e, &audit_filter_list[AUDIT_FILTER_TASK], list) {
314 if (audit_filter_rules(tsk, &e->rule, NULL, &state)) { 421 if (audit_filter_rules(tsk, &e->rule, NULL, NULL, &state)) {
315 rcu_read_unlock(); 422 rcu_read_unlock();
316 return state; 423 return state;
317 } 424 }
@@ -341,8 +448,47 @@ static enum audit_state audit_filter_syscall(struct task_struct *tsk,
341 int bit = AUDIT_BIT(ctx->major); 448 int bit = AUDIT_BIT(ctx->major);
342 449
343 list_for_each_entry_rcu(e, list, list) { 450 list_for_each_entry_rcu(e, list, list) {
344 if ((e->rule.mask[word] & bit) == bit 451 if ((e->rule.mask[word] & bit) == bit &&
345 && audit_filter_rules(tsk, &e->rule, ctx, &state)) { 452 audit_filter_rules(tsk, &e->rule, ctx, NULL,
453 &state)) {
454 rcu_read_unlock();
455 return state;
456 }
457 }
458 }
459 rcu_read_unlock();
460 return AUDIT_BUILD_CONTEXT;
461}
462
463/* At syscall exit time, this filter is called if any audit_names[] have been
464 * collected during syscall processing. We only check rules in sublists at hash
465 * buckets applicable to the inode numbers in audit_names[].
466 * Regarding audit_state, same rules apply as for audit_filter_syscall().
467 */
468enum audit_state audit_filter_inodes(struct task_struct *tsk,
469 struct audit_context *ctx)
470{
471 int i;
472 struct audit_entry *e;
473 enum audit_state state;
474
475 if (audit_pid && tsk->tgid == audit_pid)
476 return AUDIT_DISABLED;
477
478 rcu_read_lock();
479 for (i = 0; i < ctx->name_count; i++) {
480 int word = AUDIT_WORD(ctx->major);
481 int bit = AUDIT_BIT(ctx->major);
482 struct audit_names *n = &ctx->names[i];
483 int h = audit_hash_ino((u32)n->ino);
484 struct list_head *list = &audit_inode_hash[h];
485
486 if (list_empty(list))
487 continue;
488
489 list_for_each_entry_rcu(e, list, list) {
490 if ((e->rule.mask[word] & bit) == bit &&
491 audit_filter_rules(tsk, &e->rule, ctx, n, &state)) {
346 rcu_read_unlock(); 492 rcu_read_unlock();
347 return state; 493 return state;
348 } 494 }
@@ -352,6 +498,11 @@ static enum audit_state audit_filter_syscall(struct task_struct *tsk,
352 return AUDIT_BUILD_CONTEXT; 498 return AUDIT_BUILD_CONTEXT;
353} 499}
354 500
501void audit_set_auditable(struct audit_context *ctx)
502{
503 ctx->auditable = 1;
504}
505
355static inline struct audit_context *audit_get_context(struct task_struct *tsk, 506static inline struct audit_context *audit_get_context(struct task_struct *tsk,
356 int return_valid, 507 int return_valid,
357 int return_code) 508 int return_code)
@@ -365,12 +516,22 @@ static inline struct audit_context *audit_get_context(struct task_struct *tsk,
365 516
366 if (context->in_syscall && !context->auditable) { 517 if (context->in_syscall && !context->auditable) {
367 enum audit_state state; 518 enum audit_state state;
519
368 state = audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_EXIT]); 520 state = audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_EXIT]);
521 if (state == AUDIT_RECORD_CONTEXT) {
522 context->auditable = 1;
523 goto get_context;
524 }
525
526 state = audit_filter_inodes(tsk, context);
369 if (state == AUDIT_RECORD_CONTEXT) 527 if (state == AUDIT_RECORD_CONTEXT)
370 context->auditable = 1; 528 context->auditable = 1;
529
371 } 530 }
372 531
532get_context:
373 context->pid = tsk->pid; 533 context->pid = tsk->pid;
534 context->ppid = sys_getppid(); /* sic. tsk == current in all cases */
374 context->uid = tsk->uid; 535 context->uid = tsk->uid;
375 context->gid = tsk->gid; 536 context->gid = tsk->gid;
376 context->euid = tsk->euid; 537 context->euid = tsk->euid;
@@ -413,7 +574,7 @@ static inline void audit_free_names(struct audit_context *context)
413#endif 574#endif
414 575
415 for (i = 0; i < context->name_count; i++) { 576 for (i = 0; i < context->name_count; i++) {
416 if (context->names[i].name) 577 if (context->names[i].name && context->names[i].name_put)
417 __putname(context->names[i].name); 578 __putname(context->names[i].name);
418 } 579 }
419 context->name_count = 0; 580 context->name_count = 0;
@@ -513,6 +674,7 @@ static inline void audit_free_context(struct audit_context *context)
513 } 674 }
514 audit_free_names(context); 675 audit_free_names(context);
515 audit_free_aux(context); 676 audit_free_aux(context);
677 kfree(context->filterkey);
516 kfree(context); 678 kfree(context);
517 context = previous; 679 context = previous;
518 } while (context); 680 } while (context);
@@ -544,8 +706,7 @@ static void audit_log_task_context(struct audit_buffer *ab)
544 return; 706 return;
545 707
546error_path: 708error_path:
547 if (ctx) 709 kfree(ctx);
548 kfree(ctx);
549 audit_panic("error in audit_log_task_context"); 710 audit_panic("error in audit_log_task_context");
550 return; 711 return;
551} 712}
@@ -606,7 +767,7 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
606 tty = "(none)"; 767 tty = "(none)";
607 audit_log_format(ab, 768 audit_log_format(ab,
608 " a0=%lx a1=%lx a2=%lx a3=%lx items=%d" 769 " a0=%lx a1=%lx a2=%lx a3=%lx items=%d"
609 " pid=%d auid=%u uid=%u gid=%u" 770 " ppid=%d pid=%d auid=%u uid=%u gid=%u"
610 " euid=%u suid=%u fsuid=%u" 771 " euid=%u suid=%u fsuid=%u"
611 " egid=%u sgid=%u fsgid=%u tty=%s", 772 " egid=%u sgid=%u fsgid=%u tty=%s",
612 context->argv[0], 773 context->argv[0],
@@ -614,6 +775,7 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
614 context->argv[2], 775 context->argv[2],
615 context->argv[3], 776 context->argv[3],
616 context->name_count, 777 context->name_count,
778 context->ppid,
617 context->pid, 779 context->pid,
618 context->loginuid, 780 context->loginuid,
619 context->uid, 781 context->uid,
@@ -621,6 +783,11 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
621 context->euid, context->suid, context->fsuid, 783 context->euid, context->suid, context->fsuid,
622 context->egid, context->sgid, context->fsgid, tty); 784 context->egid, context->sgid, context->fsgid, tty);
623 audit_log_task_info(ab, tsk); 785 audit_log_task_info(ab, tsk);
786 if (context->filterkey) {
787 audit_log_format(ab, " key=");
788 audit_log_untrustedstring(ab, context->filterkey);
789 } else
790 audit_log_format(ab, " key=(null)");
624 audit_log_end(ab); 791 audit_log_end(ab);
625 792
626 for (aux = context->aux; aux; aux = aux->next) { 793 for (aux = context->aux; aux; aux = aux->next) {
@@ -630,11 +797,48 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
630 continue; /* audit_panic has been called */ 797 continue; /* audit_panic has been called */
631 798
632 switch (aux->type) { 799 switch (aux->type) {
800 case AUDIT_MQ_OPEN: {
801 struct audit_aux_data_mq_open *axi = (void *)aux;
802 audit_log_format(ab,
803 "oflag=0x%x mode=%#o mq_flags=0x%lx mq_maxmsg=%ld "
804 "mq_msgsize=%ld mq_curmsgs=%ld",
805 axi->oflag, axi->mode, axi->attr.mq_flags,
806 axi->attr.mq_maxmsg, axi->attr.mq_msgsize,
807 axi->attr.mq_curmsgs);
808 break; }
809
810 case AUDIT_MQ_SENDRECV: {
811 struct audit_aux_data_mq_sendrecv *axi = (void *)aux;
812 audit_log_format(ab,
813 "mqdes=%d msg_len=%zd msg_prio=%u "
814 "abs_timeout_sec=%ld abs_timeout_nsec=%ld",
815 axi->mqdes, axi->msg_len, axi->msg_prio,
816 axi->abs_timeout.tv_sec, axi->abs_timeout.tv_nsec);
817 break; }
818
819 case AUDIT_MQ_NOTIFY: {
820 struct audit_aux_data_mq_notify *axi = (void *)aux;
821 audit_log_format(ab,
822 "mqdes=%d sigev_signo=%d",
823 axi->mqdes,
824 axi->notification.sigev_signo);
825 break; }
826
827 case AUDIT_MQ_GETSETATTR: {
828 struct audit_aux_data_mq_getsetattr *axi = (void *)aux;
829 audit_log_format(ab,
830 "mqdes=%d mq_flags=0x%lx mq_maxmsg=%ld mq_msgsize=%ld "
831 "mq_curmsgs=%ld ",
832 axi->mqdes,
833 axi->mqstat.mq_flags, axi->mqstat.mq_maxmsg,
834 axi->mqstat.mq_msgsize, axi->mqstat.mq_curmsgs);
835 break; }
836
633 case AUDIT_IPC: { 837 case AUDIT_IPC: {
634 struct audit_aux_data_ipcctl *axi = (void *)aux; 838 struct audit_aux_data_ipcctl *axi = (void *)aux;
635 audit_log_format(ab, 839 audit_log_format(ab,
636 " qbytes=%lx iuid=%u igid=%u mode=%x", 840 "ouid=%u ogid=%u mode=%x",
637 axi->qbytes, axi->uid, axi->gid, axi->mode); 841 axi->uid, axi->gid, axi->mode);
638 if (axi->osid != 0) { 842 if (axi->osid != 0) {
639 char *ctx = NULL; 843 char *ctx = NULL;
640 u32 len; 844 u32 len;
@@ -652,19 +856,18 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
652 case AUDIT_IPC_SET_PERM: { 856 case AUDIT_IPC_SET_PERM: {
653 struct audit_aux_data_ipcctl *axi = (void *)aux; 857 struct audit_aux_data_ipcctl *axi = (void *)aux;
654 audit_log_format(ab, 858 audit_log_format(ab,
655 " new qbytes=%lx new iuid=%u new igid=%u new mode=%x", 859 "qbytes=%lx ouid=%u ogid=%u mode=%x",
656 axi->qbytes, axi->uid, axi->gid, axi->mode); 860 axi->qbytes, axi->uid, axi->gid, axi->mode);
657 if (axi->osid != 0) { 861 break; }
658 char *ctx = NULL; 862
659 u32 len; 863 case AUDIT_EXECVE: {
660 if (selinux_ctxid_to_string( 864 struct audit_aux_data_execve *axi = (void *)aux;
661 axi->osid, &ctx, &len)) { 865 int i;
662 audit_log_format(ab, " osid=%u", 866 const char *p;
663 axi->osid); 867 for (i = 0, p = axi->mem; i < axi->argc; i++) {
664 call_panic = 1; 868 audit_log_format(ab, "a%d=", i);
665 } else 869 p = audit_log_untrustedstring(ab, p);
666 audit_log_format(ab, " obj=%s", ctx); 870 audit_log_format(ab, "\n");
667 kfree(ctx);
668 } 871 }
669 break; } 872 break; }
670 873
@@ -700,8 +903,7 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
700 } 903 }
701 } 904 }
702 for (i = 0; i < context->name_count; i++) { 905 for (i = 0; i < context->name_count; i++) {
703 unsigned long ino = context->names[i].ino; 906 struct audit_names *n = &context->names[i];
704 unsigned long pino = context->names[i].pino;
705 907
706 ab = audit_log_start(context, GFP_KERNEL, AUDIT_PATH); 908 ab = audit_log_start(context, GFP_KERNEL, AUDIT_PATH);
707 if (!ab) 909 if (!ab)
@@ -709,33 +911,47 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
709 911
710 audit_log_format(ab, "item=%d", i); 912 audit_log_format(ab, "item=%d", i);
711 913
712 audit_log_format(ab, " name="); 914 if (n->name) {
713 if (context->names[i].name) 915 switch(n->name_len) {
714 audit_log_untrustedstring(ab, context->names[i].name); 916 case AUDIT_NAME_FULL:
715 else 917 /* log the full path */
716 audit_log_format(ab, "(null)"); 918 audit_log_format(ab, " name=");
717 919 audit_log_untrustedstring(ab, n->name);
718 if (pino != (unsigned long)-1) 920 break;
719 audit_log_format(ab, " parent=%lu", pino); 921 case 0:
720 if (ino != (unsigned long)-1) 922 /* name was specified as a relative path and the
721 audit_log_format(ab, " inode=%lu", ino); 923 * directory component is the cwd */
722 if ((pino != (unsigned long)-1) || (ino != (unsigned long)-1)) 924 audit_log_d_path(ab, " name=", context->pwd,
723 audit_log_format(ab, " dev=%02x:%02x mode=%#o" 925 context->pwdmnt);
724 " ouid=%u ogid=%u rdev=%02x:%02x", 926 break;
725 MAJOR(context->names[i].dev), 927 default:
726 MINOR(context->names[i].dev), 928 /* log the name's directory component */
727 context->names[i].mode, 929 audit_log_format(ab, " name=");
728 context->names[i].uid, 930 audit_log_n_untrustedstring(ab, n->name_len,
729 context->names[i].gid, 931 n->name);
730 MAJOR(context->names[i].rdev), 932 }
731 MINOR(context->names[i].rdev)); 933 } else
732 if (context->names[i].osid != 0) { 934 audit_log_format(ab, " name=(null)");
935
936 if (n->ino != (unsigned long)-1) {
937 audit_log_format(ab, " inode=%lu"
938 " dev=%02x:%02x mode=%#o"
939 " ouid=%u ogid=%u rdev=%02x:%02x",
940 n->ino,
941 MAJOR(n->dev),
942 MINOR(n->dev),
943 n->mode,
944 n->uid,
945 n->gid,
946 MAJOR(n->rdev),
947 MINOR(n->rdev));
948 }
949 if (n->osid != 0) {
733 char *ctx = NULL; 950 char *ctx = NULL;
734 u32 len; 951 u32 len;
735 if (selinux_ctxid_to_string( 952 if (selinux_ctxid_to_string(
736 context->names[i].osid, &ctx, &len)) { 953 n->osid, &ctx, &len)) {
737 audit_log_format(ab, " osid=%u", 954 audit_log_format(ab, " osid=%u", n->osid);
738 context->names[i].osid);
739 call_panic = 2; 955 call_panic = 2;
740 } else 956 } else
741 audit_log_format(ab, " obj=%s", ctx); 957 audit_log_format(ab, " obj=%s", ctx);
@@ -897,6 +1113,8 @@ void audit_syscall_exit(int valid, long return_code)
897 } else { 1113 } else {
898 audit_free_names(context); 1114 audit_free_names(context);
899 audit_free_aux(context); 1115 audit_free_aux(context);
1116 kfree(context->filterkey);
1117 context->filterkey = NULL;
900 tsk->audit_context = context; 1118 tsk->audit_context = context;
901 } 1119 }
902} 1120}
@@ -908,11 +1126,11 @@ void audit_syscall_exit(int valid, long return_code)
908 * Add a name to the list of audit names for this context. 1126 * Add a name to the list of audit names for this context.
909 * Called from fs/namei.c:getname(). 1127 * Called from fs/namei.c:getname().
910 */ 1128 */
911void audit_getname(const char *name) 1129void __audit_getname(const char *name)
912{ 1130{
913 struct audit_context *context = current->audit_context; 1131 struct audit_context *context = current->audit_context;
914 1132
915 if (!context || IS_ERR(name) || !name) 1133 if (IS_ERR(name) || !name)
916 return; 1134 return;
917 1135
918 if (!context->in_syscall) { 1136 if (!context->in_syscall) {
@@ -925,6 +1143,8 @@ void audit_getname(const char *name)
925 } 1143 }
926 BUG_ON(context->name_count >= AUDIT_NAMES); 1144 BUG_ON(context->name_count >= AUDIT_NAMES);
927 context->names[context->name_count].name = name; 1145 context->names[context->name_count].name = name;
1146 context->names[context->name_count].name_len = AUDIT_NAME_FULL;
1147 context->names[context->name_count].name_put = 1;
928 context->names[context->name_count].ino = (unsigned long)-1; 1148 context->names[context->name_count].ino = (unsigned long)-1;
929 ++context->name_count; 1149 ++context->name_count;
930 if (!context->pwd) { 1150 if (!context->pwd) {
@@ -991,11 +1211,10 @@ static void audit_inode_context(int idx, const struct inode *inode)
991 * audit_inode - store the inode and device from a lookup 1211 * audit_inode - store the inode and device from a lookup
992 * @name: name being audited 1212 * @name: name being audited
993 * @inode: inode being audited 1213 * @inode: inode being audited
994 * @flags: lookup flags (as used in path_lookup())
995 * 1214 *
996 * Called from fs/namei.c:path_lookup(). 1215 * Called from fs/namei.c:path_lookup().
997 */ 1216 */
998void __audit_inode(const char *name, const struct inode *inode, unsigned flags) 1217void __audit_inode(const char *name, const struct inode *inode)
999{ 1218{
1000 int idx; 1219 int idx;
1001 struct audit_context *context = current->audit_context; 1220 struct audit_context *context = current->audit_context;
@@ -1021,20 +1240,13 @@ void __audit_inode(const char *name, const struct inode *inode, unsigned flags)
1021 ++context->ino_count; 1240 ++context->ino_count;
1022#endif 1241#endif
1023 } 1242 }
1243 context->names[idx].ino = inode->i_ino;
1024 context->names[idx].dev = inode->i_sb->s_dev; 1244 context->names[idx].dev = inode->i_sb->s_dev;
1025 context->names[idx].mode = inode->i_mode; 1245 context->names[idx].mode = inode->i_mode;
1026 context->names[idx].uid = inode->i_uid; 1246 context->names[idx].uid = inode->i_uid;
1027 context->names[idx].gid = inode->i_gid; 1247 context->names[idx].gid = inode->i_gid;
1028 context->names[idx].rdev = inode->i_rdev; 1248 context->names[idx].rdev = inode->i_rdev;
1029 audit_inode_context(idx, inode); 1249 audit_inode_context(idx, inode);
1030 if ((flags & LOOKUP_PARENT) && (strcmp(name, "/") != 0) &&
1031 (strcmp(name, ".") != 0)) {
1032 context->names[idx].ino = (unsigned long)-1;
1033 context->names[idx].pino = inode->i_ino;
1034 } else {
1035 context->names[idx].ino = inode->i_ino;
1036 context->names[idx].pino = (unsigned long)-1;
1037 }
1038} 1250}
1039 1251
1040/** 1252/**
@@ -1056,51 +1268,40 @@ void __audit_inode_child(const char *dname, const struct inode *inode,
1056{ 1268{
1057 int idx; 1269 int idx;
1058 struct audit_context *context = current->audit_context; 1270 struct audit_context *context = current->audit_context;
1271 const char *found_name = NULL;
1272 int dirlen = 0;
1059 1273
1060 if (!context->in_syscall) 1274 if (!context->in_syscall)
1061 return; 1275 return;
1062 1276
1063 /* determine matching parent */ 1277 /* determine matching parent */
1064 if (dname) 1278 if (!dname)
1065 for (idx = 0; idx < context->name_count; idx++) 1279 goto update_context;
1066 if (context->names[idx].pino == pino) { 1280 for (idx = 0; idx < context->name_count; idx++)
1067 const char *n; 1281 if (context->names[idx].ino == pino) {
1068 const char *name = context->names[idx].name; 1282 const char *name = context->names[idx].name;
1069 int dlen = strlen(dname); 1283
1070 int nlen = name ? strlen(name) : 0; 1284 if (!name)
1071 1285 continue;
1072 if (nlen < dlen) 1286
1073 continue; 1287 if (audit_compare_dname_path(dname, name, &dirlen) == 0) {
1074 1288 context->names[idx].name_len = dirlen;
1075 /* disregard trailing slashes */ 1289 found_name = name;
1076 n = name + nlen - 1; 1290 break;
1077 while ((*n == '/') && (n > name))
1078 n--;
1079
1080 /* find last path component */
1081 n = n - dlen + 1;
1082 if (n < name)
1083 continue;
1084 else if (n > name) {
1085 if (*--n != '/')
1086 continue;
1087 else
1088 n++;
1089 }
1090
1091 if (strncmp(n, dname, dlen) == 0)
1092 goto update_context;
1093 } 1291 }
1292 }
1094 1293
1095 /* catch-all in case match not found */ 1294update_context:
1096 idx = context->name_count++; 1295 idx = context->name_count++;
1097 context->names[idx].name = NULL;
1098 context->names[idx].pino = pino;
1099#if AUDIT_DEBUG 1296#if AUDIT_DEBUG
1100 context->ino_count++; 1297 context->ino_count++;
1101#endif 1298#endif
1299 /* Re-use the name belonging to the slot for a matching parent directory.
1300 * All names for this context are relinquished in audit_free_names() */
1301 context->names[idx].name = found_name;
1302 context->names[idx].name_len = AUDIT_NAME_FULL;
1303 context->names[idx].name_put = 0; /* don't call __putname() */
1102 1304
1103update_context:
1104 if (inode) { 1305 if (inode) {
1105 context->names[idx].ino = inode->i_ino; 1306 context->names[idx].ino = inode->i_ino;
1106 context->names[idx].dev = inode->i_sb->s_dev; 1307 context->names[idx].dev = inode->i_sb->s_dev;
@@ -1109,7 +1310,8 @@ update_context:
1109 context->names[idx].gid = inode->i_gid; 1310 context->names[idx].gid = inode->i_gid;
1110 context->names[idx].rdev = inode->i_rdev; 1311 context->names[idx].rdev = inode->i_rdev;
1111 audit_inode_context(idx, inode); 1312 audit_inode_context(idx, inode);
1112 } 1313 } else
1314 context->names[idx].ino = (unsigned long)-1;
1113} 1315}
1114 1316
1115/** 1317/**
@@ -1142,18 +1344,23 @@ void auditsc_get_stamp(struct audit_context *ctx,
1142 */ 1344 */
1143int audit_set_loginuid(struct task_struct *task, uid_t loginuid) 1345int audit_set_loginuid(struct task_struct *task, uid_t loginuid)
1144{ 1346{
1145 if (task->audit_context) { 1347 struct audit_context *context = task->audit_context;
1146 struct audit_buffer *ab; 1348
1147 1349 if (context) {
1148 ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_LOGIN); 1350 /* Only log if audit is enabled */
1149 if (ab) { 1351 if (context->in_syscall) {
1150 audit_log_format(ab, "login pid=%d uid=%u " 1352 struct audit_buffer *ab;
1151 "old auid=%u new auid=%u", 1353
1152 task->pid, task->uid, 1354 ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_LOGIN);
1153 task->audit_context->loginuid, loginuid); 1355 if (ab) {
1154 audit_log_end(ab); 1356 audit_log_format(ab, "login pid=%d uid=%u "
1357 "old auid=%u new auid=%u",
1358 task->pid, task->uid,
1359 context->loginuid, loginuid);
1360 audit_log_end(ab);
1361 }
1155 } 1362 }
1156 task->audit_context->loginuid = loginuid; 1363 context->loginuid = loginuid;
1157 } 1364 }
1158 return 0; 1365 return 0;
1159} 1366}
@@ -1170,16 +1377,193 @@ uid_t audit_get_loginuid(struct audit_context *ctx)
1170} 1377}
1171 1378
1172/** 1379/**
1173 * audit_ipc_obj - record audit data for ipc object 1380 * __audit_mq_open - record audit data for a POSIX MQ open
1174 * @ipcp: ipc permissions 1381 * @oflag: open flag
1382 * @mode: mode bits
1383 * @u_attr: queue attributes
1175 * 1384 *
1176 * Returns 0 for success or NULL context or < 0 on error. 1385 * Returns 0 for success or NULL context or < 0 on error.
1177 */ 1386 */
1178int audit_ipc_obj(struct kern_ipc_perm *ipcp) 1387int __audit_mq_open(int oflag, mode_t mode, struct mq_attr __user *u_attr)
1179{ 1388{
1180 struct audit_aux_data_ipcctl *ax; 1389 struct audit_aux_data_mq_open *ax;
1390 struct audit_context *context = current->audit_context;
1391
1392 if (!audit_enabled)
1393 return 0;
1394
1395 if (likely(!context))
1396 return 0;
1397
1398 ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
1399 if (!ax)
1400 return -ENOMEM;
1401
1402 if (u_attr != NULL) {
1403 if (copy_from_user(&ax->attr, u_attr, sizeof(ax->attr))) {
1404 kfree(ax);
1405 return -EFAULT;
1406 }
1407 } else
1408 memset(&ax->attr, 0, sizeof(ax->attr));
1409
1410 ax->oflag = oflag;
1411 ax->mode = mode;
1412
1413 ax->d.type = AUDIT_MQ_OPEN;
1414 ax->d.next = context->aux;
1415 context->aux = (void *)ax;
1416 return 0;
1417}
1418
1419/**
1420 * __audit_mq_timedsend - record audit data for a POSIX MQ timed send
1421 * @mqdes: MQ descriptor
1422 * @msg_len: Message length
1423 * @msg_prio: Message priority
1424 * @u_abs_timeout: Message timeout in absolute time
1425 *
1426 * Returns 0 for success or NULL context or < 0 on error.
1427 */
1428int __audit_mq_timedsend(mqd_t mqdes, size_t msg_len, unsigned int msg_prio,
1429 const struct timespec __user *u_abs_timeout)
1430{
1431 struct audit_aux_data_mq_sendrecv *ax;
1432 struct audit_context *context = current->audit_context;
1433
1434 if (!audit_enabled)
1435 return 0;
1436
1437 if (likely(!context))
1438 return 0;
1439
1440 ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
1441 if (!ax)
1442 return -ENOMEM;
1443
1444 if (u_abs_timeout != NULL) {
1445 if (copy_from_user(&ax->abs_timeout, u_abs_timeout, sizeof(ax->abs_timeout))) {
1446 kfree(ax);
1447 return -EFAULT;
1448 }
1449 } else
1450 memset(&ax->abs_timeout, 0, sizeof(ax->abs_timeout));
1451
1452 ax->mqdes = mqdes;
1453 ax->msg_len = msg_len;
1454 ax->msg_prio = msg_prio;
1455
1456 ax->d.type = AUDIT_MQ_SENDRECV;
1457 ax->d.next = context->aux;
1458 context->aux = (void *)ax;
1459 return 0;
1460}
1461
1462/**
1463 * __audit_mq_timedreceive - record audit data for a POSIX MQ timed receive
1464 * @mqdes: MQ descriptor
1465 * @msg_len: Message length
1466 * @u_msg_prio: Message priority
1467 * @u_abs_timeout: Message timeout in absolute time
1468 *
1469 * Returns 0 for success or NULL context or < 0 on error.
1470 */
1471int __audit_mq_timedreceive(mqd_t mqdes, size_t msg_len,
1472 unsigned int __user *u_msg_prio,
1473 const struct timespec __user *u_abs_timeout)
1474{
1475 struct audit_aux_data_mq_sendrecv *ax;
1476 struct audit_context *context = current->audit_context;
1477
1478 if (!audit_enabled)
1479 return 0;
1480
1481 if (likely(!context))
1482 return 0;
1483
1484 ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
1485 if (!ax)
1486 return -ENOMEM;
1487
1488 if (u_msg_prio != NULL) {
1489 if (get_user(ax->msg_prio, u_msg_prio)) {
1490 kfree(ax);
1491 return -EFAULT;
1492 }
1493 } else
1494 ax->msg_prio = 0;
1495
1496 if (u_abs_timeout != NULL) {
1497 if (copy_from_user(&ax->abs_timeout, u_abs_timeout, sizeof(ax->abs_timeout))) {
1498 kfree(ax);
1499 return -EFAULT;
1500 }
1501 } else
1502 memset(&ax->abs_timeout, 0, sizeof(ax->abs_timeout));
1503
1504 ax->mqdes = mqdes;
1505 ax->msg_len = msg_len;
1506
1507 ax->d.type = AUDIT_MQ_SENDRECV;
1508 ax->d.next = context->aux;
1509 context->aux = (void *)ax;
1510 return 0;
1511}
1512
1513/**
1514 * __audit_mq_notify - record audit data for a POSIX MQ notify
1515 * @mqdes: MQ descriptor
1516 * @u_notification: Notification event
1517 *
1518 * Returns 0 for success or NULL context or < 0 on error.
1519 */
1520
1521int __audit_mq_notify(mqd_t mqdes, const struct sigevent __user *u_notification)
1522{
1523 struct audit_aux_data_mq_notify *ax;
1524 struct audit_context *context = current->audit_context;
1525
1526 if (!audit_enabled)
1527 return 0;
1528
1529 if (likely(!context))
1530 return 0;
1531
1532 ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
1533 if (!ax)
1534 return -ENOMEM;
1535
1536 if (u_notification != NULL) {
1537 if (copy_from_user(&ax->notification, u_notification, sizeof(ax->notification))) {
1538 kfree(ax);
1539 return -EFAULT;
1540 }
1541 } else
1542 memset(&ax->notification, 0, sizeof(ax->notification));
1543
1544 ax->mqdes = mqdes;
1545
1546 ax->d.type = AUDIT_MQ_NOTIFY;
1547 ax->d.next = context->aux;
1548 context->aux = (void *)ax;
1549 return 0;
1550}
1551
1552/**
1553 * __audit_mq_getsetattr - record audit data for a POSIX MQ get/set attribute
1554 * @mqdes: MQ descriptor
1555 * @mqstat: MQ flags
1556 *
1557 * Returns 0 for success or NULL context or < 0 on error.
1558 */
1559int __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
1560{
1561 struct audit_aux_data_mq_getsetattr *ax;
1181 struct audit_context *context = current->audit_context; 1562 struct audit_context *context = current->audit_context;
1182 1563
1564 if (!audit_enabled)
1565 return 0;
1566
1183 if (likely(!context)) 1567 if (likely(!context))
1184 return 0; 1568 return 0;
1185 1569
@@ -1187,6 +1571,30 @@ int audit_ipc_obj(struct kern_ipc_perm *ipcp)
1187 if (!ax) 1571 if (!ax)
1188 return -ENOMEM; 1572 return -ENOMEM;
1189 1573
1574 ax->mqdes = mqdes;
1575 ax->mqstat = *mqstat;
1576
1577 ax->d.type = AUDIT_MQ_GETSETATTR;
1578 ax->d.next = context->aux;
1579 context->aux = (void *)ax;
1580 return 0;
1581}
1582
1583/**
1584 * audit_ipc_obj - record audit data for ipc object
1585 * @ipcp: ipc permissions
1586 *
1587 * Returns 0 for success or NULL context or < 0 on error.
1588 */
1589int __audit_ipc_obj(struct kern_ipc_perm *ipcp)
1590{
1591 struct audit_aux_data_ipcctl *ax;
1592 struct audit_context *context = current->audit_context;
1593
1594 ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
1595 if (!ax)
1596 return -ENOMEM;
1597
1190 ax->uid = ipcp->uid; 1598 ax->uid = ipcp->uid;
1191 ax->gid = ipcp->gid; 1599 ax->gid = ipcp->gid;
1192 ax->mode = ipcp->mode; 1600 ax->mode = ipcp->mode;
@@ -1207,14 +1615,11 @@ int audit_ipc_obj(struct kern_ipc_perm *ipcp)
1207 * 1615 *
1208 * Returns 0 for success or NULL context or < 0 on error. 1616 * Returns 0 for success or NULL context or < 0 on error.
1209 */ 1617 */
1210int audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode, struct kern_ipc_perm *ipcp) 1618int __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode)
1211{ 1619{
1212 struct audit_aux_data_ipcctl *ax; 1620 struct audit_aux_data_ipcctl *ax;
1213 struct audit_context *context = current->audit_context; 1621 struct audit_context *context = current->audit_context;
1214 1622
1215 if (likely(!context))
1216 return 0;
1217
1218 ax = kmalloc(sizeof(*ax), GFP_ATOMIC); 1623 ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
1219 if (!ax) 1624 if (!ax)
1220 return -ENOMEM; 1625 return -ENOMEM;
@@ -1223,7 +1628,6 @@ int audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode,
1223 ax->uid = uid; 1628 ax->uid = uid;
1224 ax->gid = gid; 1629 ax->gid = gid;
1225 ax->mode = mode; 1630 ax->mode = mode;
1226 selinux_get_ipc_sid(ipcp, &ax->osid);
1227 1631
1228 ax->d.type = AUDIT_IPC_SET_PERM; 1632 ax->d.type = AUDIT_IPC_SET_PERM;
1229 ax->d.next = context->aux; 1633 ax->d.next = context->aux;
@@ -1231,6 +1635,39 @@ int audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode,
1231 return 0; 1635 return 0;
1232} 1636}
1233 1637
1638int audit_bprm(struct linux_binprm *bprm)
1639{
1640 struct audit_aux_data_execve *ax;
1641 struct audit_context *context = current->audit_context;
1642 unsigned long p, next;
1643 void *to;
1644
1645 if (likely(!audit_enabled || !context))
1646 return 0;
1647
1648 ax = kmalloc(sizeof(*ax) + PAGE_SIZE * MAX_ARG_PAGES - bprm->p,
1649 GFP_KERNEL);
1650 if (!ax)
1651 return -ENOMEM;
1652
1653 ax->argc = bprm->argc;
1654 ax->envc = bprm->envc;
1655 for (p = bprm->p, to = ax->mem; p < MAX_ARG_PAGES*PAGE_SIZE; p = next) {
1656 struct page *page = bprm->page[p / PAGE_SIZE];
1657 void *kaddr = kmap(page);
1658 next = (p + PAGE_SIZE) & ~(PAGE_SIZE - 1);
1659 memcpy(to, kaddr + (p & (PAGE_SIZE - 1)), next - p);
1660 to += next - p;
1661 kunmap(page);
1662 }
1663
1664 ax->d.type = AUDIT_EXECVE;
1665 ax->d.next = context->aux;
1666 context->aux = (void *)ax;
1667 return 0;
1668}
1669
1670
1234/** 1671/**
1235 * audit_socketcall - record audit data for sys_socketcall 1672 * audit_socketcall - record audit data for sys_socketcall
1236 * @nargs: number of args 1673 * @nargs: number of args
@@ -1325,19 +1762,20 @@ int audit_avc_path(struct dentry *dentry, struct vfsmount *mnt)
1325 * If the audit subsystem is being terminated, record the task (pid) 1762 * If the audit subsystem is being terminated, record the task (pid)
1326 * and uid that is doing that. 1763 * and uid that is doing that.
1327 */ 1764 */
1328void audit_signal_info(int sig, struct task_struct *t) 1765void __audit_signal_info(int sig, struct task_struct *t)
1329{ 1766{
1330 extern pid_t audit_sig_pid; 1767 extern pid_t audit_sig_pid;
1331 extern uid_t audit_sig_uid; 1768 extern uid_t audit_sig_uid;
1332 1769 extern u32 audit_sig_sid;
1333 if (unlikely(audit_pid && t->tgid == audit_pid)) { 1770
1334 if (sig == SIGTERM || sig == SIGHUP) { 1771 if (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1) {
1335 struct audit_context *ctx = current->audit_context; 1772 struct task_struct *tsk = current;
1336 audit_sig_pid = current->pid; 1773 struct audit_context *ctx = tsk->audit_context;
1337 if (ctx) 1774 audit_sig_pid = tsk->pid;
1338 audit_sig_uid = ctx->loginuid; 1775 if (ctx)
1339 else 1776 audit_sig_uid = ctx->loginuid;
1340 audit_sig_uid = current->uid; 1777 else
1341 } 1778 audit_sig_uid = tsk->uid;
1779 selinux_get_task_sid(tsk, &audit_sig_sid);
1342 } 1780 }
1343} 1781}
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-07 00:48:51 -0400