Blame view
kernel/auditsc.c
65.5 KB
85c8721ff audit: update poi... |
1 |
/* auditsc.c -- System-call auditing support |
1da177e4c Linux-2.6.12-rc2 |
2 3 4 |
* Handles all system-call specific auditing features. * * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina. |
73241ccca [PATCH] Collect m... |
5 |
* Copyright 2005 Hewlett-Packard Development Company, L.P. |
20ca73bc7 [PATCH] Audit of ... |
6 |
* Copyright (C) 2005, 2006 IBM Corporation |
1da177e4c Linux-2.6.12-rc2 |
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 |
* All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Written by Rickard E. (Rik) Faith <faith@redhat.com> * * Many of the ideas implemented here are from Stephen C. Tweedie, * especially the idea of avoiding a copy by using getname. * * The method for actual interception of syscall entry and exit (not in * this file -- see entry.S) is based on a GPL'd patch written by * okir@suse.de and Copyright 2003 SuSE Linux AG. * |
20ca73bc7 [PATCH] Audit of ... |
32 33 34 |
* POSIX message queue support added by George Wilson <ltcgcw@us.ibm.com>, * 2006. * |
b63862f46 [PATCH] Filter ru... |
35 36 37 |
* The support of additional filter rules compares (>, <, >=, <=) was * added by Dustin Kirkland <dustin.kirkland@us.ibm.com>, 2005. * |
73241ccca [PATCH] Collect m... |
38 39 |
* Modified by Amy Griffis <amy.griffis@hp.com> to collect additional * filesystem information. |
8c8570fb8 [PATCH] Capture s... |
40 41 42 |
* * Subject and object context labeling support added by <danjones@us.ibm.com> * and <dustin.kirkland@us.ibm.com> for LSPP certification compliance. |
1da177e4c Linux-2.6.12-rc2 |
43 |
*/ |
f952d10ff audit: Use more c... |
44 |
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
1da177e4c Linux-2.6.12-rc2 |
45 |
#include <linux/init.h> |
1da177e4c Linux-2.6.12-rc2 |
46 |
#include <asm/types.h> |
60063497a atomic: use <linu... |
47 |
#include <linux/atomic.h> |
73241ccca [PATCH] Collect m... |
48 49 |
#include <linux/fs.h> #include <linux/namei.h> |
1da177e4c Linux-2.6.12-rc2 |
50 |
#include <linux/mm.h> |
9984de1a5 kernel: Map most ... |
51 |
#include <linux/export.h> |
5a0e3ad6a include cleanup: ... |
52 |
#include <linux/slab.h> |
011161051 AUDIT: Avoid slee... |
53 |
#include <linux/mount.h> |
3ec3b2fba AUDIT: Capture sy... |
54 |
#include <linux/socket.h> |
20ca73bc7 [PATCH] Audit of ... |
55 |
#include <linux/mqueue.h> |
1da177e4c Linux-2.6.12-rc2 |
56 57 58 |
#include <linux/audit.h> #include <linux/personality.h> #include <linux/time.h> |
5bb289b5a AUDIT: Clean up u... |
59 |
#include <linux/netlink.h> |
f55619642 AUDIT: Avoid sche... |
60 |
#include <linux/compiler.h> |
1da177e4c Linux-2.6.12-rc2 |
61 |
#include <asm/unistd.h> |
8c8570fb8 [PATCH] Capture s... |
62 |
#include <linux/security.h> |
fe7752bab [PATCH] Fix audit... |
63 |
#include <linux/list.h> |
473ae30bc [PATCH] execve ar... |
64 |
#include <linux/binfmts.h> |
a1f8e7f7f [PATCH] severing ... |
65 |
#include <linux/highmem.h> |
f46038ff7 [PATCH] log ppid |
66 |
#include <linux/syscalls.h> |
84db564aa audit: add arch f... |
67 |
#include <asm/syscall.h> |
851f7ff56 This patch will p... |
68 |
#include <linux/capability.h> |
5ad4e53bd Get rid of indire... |
69 |
#include <linux/fs_struct.h> |
3dc1c1b2d seccomp: remove d... |
70 |
#include <linux/compat.h> |
3f1c82502 audit: Audit proc... |
71 |
#include <linux/ctype.h> |
fcf22d826 audit: create pri... |
72 |
#include <linux/string.h> |
43761473c audit: fix a doub... |
73 |
#include <linux/uaccess.h> |
9dd813c15 fsnotify: Move ma... |
74 |
#include <linux/fsnotify_backend.h> |
fcf22d826 audit: create pri... |
75 |
#include <uapi/linux/limits.h> |
1da177e4c Linux-2.6.12-rc2 |
76 |
|
fe7752bab [PATCH] Fix audit... |
77 |
#include "audit.h" |
1da177e4c Linux-2.6.12-rc2 |
78 |
|
d7e7528bc Audit: push audit... |
79 80 81 82 |
/* flags stating the success for a syscall */ #define AUDITSC_INVALID 0 #define AUDITSC_SUCCESS 1 #define AUDITSC_FAILURE 2 |
43761473c audit: fix a doub... |
83 84 |
/* no execve audit message should be longer than this (userspace limits), * see the note near the top of audit_log_execve_info() about this value */ |
de6bbd1d3 [AUDIT] break lar... |
85 |
#define MAX_EXECVE_AUDIT_LEN 7500 |
3f1c82502 audit: Audit proc... |
86 87 |
/* max length to print of cmdline/proctitle value during audit */ #define MAX_PROCTITLE_AUDIT_LEN 128 |
471a5c7c8 [PATCH] introduce... |
88 89 |
/* number of audit rules */ int audit_n_rules; |
e54dc2431 [PATCH] audit sig... |
90 91 |
/* determines whether we collect data for signals sent */ int audit_signals; |
1da177e4c Linux-2.6.12-rc2 |
92 93 94 95 96 97 |
struct audit_aux_data { struct audit_aux_data *next; int type; }; #define AUDIT_AUX_IPCPERM 0 |
e54dc2431 [PATCH] audit sig... |
98 99 |
/* Number of target pids per aux struct. */ #define AUDIT_AUX_PIDS 16 |
e54dc2431 [PATCH] audit sig... |
100 101 102 |
struct audit_aux_data_pids { struct audit_aux_data d; pid_t target_pid[AUDIT_AUX_PIDS]; |
e1760bd5f userns: Convert t... |
103 |
kuid_t target_auid[AUDIT_AUX_PIDS]; |
cca080d9b userns: Convert a... |
104 |
kuid_t target_uid[AUDIT_AUX_PIDS]; |
4746ec5b0 [AUDIT] add sessi... |
105 |
unsigned int target_sessionid[AUDIT_AUX_PIDS]; |
e54dc2431 [PATCH] audit sig... |
106 |
u32 target_sid[AUDIT_AUX_PIDS]; |
c2a7780ef [AUDIT] collect u... |
107 |
char target_comm[AUDIT_AUX_PIDS][TASK_COMM_LEN]; |
e54dc2431 [PATCH] audit sig... |
108 109 |
int pid_count; }; |
3fc689e96 Any time fcaps or... |
110 111 112 113 114 115 116 |
struct audit_aux_data_bprm_fcaps { struct audit_aux_data d; struct audit_cap_data fcap; unsigned int fcap_ver; struct audit_cap_data old_pcap; struct audit_cap_data new_pcap; }; |
74c3cbe33 [PATCH] audit: wa... |
117 118 119 120 |
struct audit_tree_refs { struct audit_tree_refs *next; struct audit_chunk *c[31]; }; |
55669bfa1 [PATCH] audit: AU... |
121 122 |
static int audit_match_perm(struct audit_context *ctx, int mask) { |
c4bacefb7 [PATCH] audit: Mo... |
123 |
unsigned n; |
1a61c88de Re: [PATCH] Fix t... |
124 125 |
if (unlikely(!ctx)) return 0; |
c4bacefb7 [PATCH] audit: Mo... |
126 |
n = ctx->major; |
dbda4c0b9 tty: Fix abusers ... |
127 |
|
55669bfa1 [PATCH] audit: AU... |
128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 |
switch (audit_classify_syscall(ctx->arch, n)) { case 0: /* native */ if ((mask & AUDIT_PERM_WRITE) && audit_match_class(AUDIT_CLASS_WRITE, n)) return 1; if ((mask & AUDIT_PERM_READ) && audit_match_class(AUDIT_CLASS_READ, n)) return 1; if ((mask & AUDIT_PERM_ATTR) && audit_match_class(AUDIT_CLASS_CHATTR, n)) return 1; return 0; case 1: /* 32bit on biarch */ if ((mask & AUDIT_PERM_WRITE) && audit_match_class(AUDIT_CLASS_WRITE_32, n)) return 1; if ((mask & AUDIT_PERM_READ) && audit_match_class(AUDIT_CLASS_READ_32, n)) return 1; if ((mask & AUDIT_PERM_ATTR) && audit_match_class(AUDIT_CLASS_CHATTR_32, n)) return 1; return 0; case 2: /* open */ return mask & ACC_MODE(ctx->argv[1]); case 3: /* openat */ return mask & ACC_MODE(ctx->argv[2]); case 4: /* socketcall */ return ((mask & AUDIT_PERM_WRITE) && ctx->argv[0] == SYS_BIND); case 5: /* execve */ return mask & AUDIT_PERM_EXEC; default: return 0; } } |
5ef30ee53 audit: make filet... |
163 |
static int audit_match_filetype(struct audit_context *ctx, int val) |
8b67dca94 [PATCH] new predi... |
164 |
{ |
5195d8e21 audit: dynamicall... |
165 |
struct audit_names *n; |
5ef30ee53 audit: make filet... |
166 |
umode_t mode = (umode_t)val; |
1a61c88de Re: [PATCH] Fix t... |
167 168 169 |
if (unlikely(!ctx)) return 0; |
5195d8e21 audit: dynamicall... |
170 |
list_for_each_entry(n, &ctx->names_list, list) { |
84cb777e6 audit: use macros... |
171 |
if ((n->ino != AUDIT_INO_UNSET) && |
5195d8e21 audit: dynamicall... |
172 |
((n->mode & S_IFMT) == mode)) |
5ef30ee53 audit: make filet... |
173 174 |
return 1; } |
5195d8e21 audit: dynamicall... |
175 |
|
5ef30ee53 audit: make filet... |
176 |
return 0; |
8b67dca94 [PATCH] new predi... |
177 |
} |
74c3cbe33 [PATCH] audit: wa... |
178 179 180 181 182 183 184 185 186 187 188 |
/* * We keep a linked list of fixed-sized (31 pointer) arrays of audit_chunk *; * ->first_trees points to its beginning, ->trees - to the current end of data. * ->tree_count is the number of free entries in array pointed to by ->trees. * Original condition is (NULL, NULL, 0); as soon as it grows we never revert to NULL, * "empty" becomes (p, p, 31) afterwards. We don't shrink the list (and seriously, * it's going to remain 1-element for almost any setup) until we free context itself. * References in it _are_ dropped - at the same time we free/drop aux stuff. */ #ifdef CONFIG_AUDIT_TREE |
679173b72 audit: audit_set_... |
189 190 191 192 193 194 195 |
static void audit_set_auditable(struct audit_context *ctx) { if (!ctx->prio) { ctx->prio = 1; ctx->current_state = AUDIT_RECORD_CONTEXT; } } |
74c3cbe33 [PATCH] audit: wa... |
196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 |
static int put_tree_ref(struct audit_context *ctx, struct audit_chunk *chunk) { struct audit_tree_refs *p = ctx->trees; int left = ctx->tree_count; if (likely(left)) { p->c[--left] = chunk; ctx->tree_count = left; return 1; } if (!p) return 0; p = p->next; if (p) { p->c[30] = chunk; ctx->trees = p; ctx->tree_count = 30; return 1; } return 0; } static int grow_tree_refs(struct audit_context *ctx) { struct audit_tree_refs *p = ctx->trees; ctx->trees = kzalloc(sizeof(struct audit_tree_refs), GFP_KERNEL); if (!ctx->trees) { ctx->trees = p; return 0; } if (p) p->next = ctx->trees; else ctx->first_trees = ctx->trees; ctx->tree_count = 31; return 1; } #endif static void unroll_tree_refs(struct audit_context *ctx, struct audit_tree_refs *p, int count) { #ifdef CONFIG_AUDIT_TREE struct audit_tree_refs *q; int n; if (!p) { /* we started with empty chain */ p = ctx->first_trees; count = 31; /* if the very first allocation has failed, nothing to do */ if (!p) return; } n = count; for (q = p; q != ctx->trees; q = q->next, n = 31) { while (n--) { audit_put_chunk(q->c[n]); q->c[n] = NULL; } } while (n-- > ctx->tree_count) { audit_put_chunk(q->c[n]); q->c[n] = NULL; } ctx->trees = p; ctx->tree_count = count; #endif } static void free_tree_refs(struct audit_context *ctx) { struct audit_tree_refs *p, *q; for (p = ctx->first_trees; p; p = q) { q = p->next; kfree(p); } } static int match_tree_refs(struct audit_context *ctx, struct audit_tree *tree) { #ifdef CONFIG_AUDIT_TREE struct audit_tree_refs *p; int n; if (!tree) return 0; /* full ones */ for (p = ctx->first_trees; p != ctx->trees; p = p->next) { for (n = 0; n < 31; n++) if (audit_tree_match(p->c[n], tree)) return 1; } /* partial */ if (p) { for (n = ctx->tree_count; n < 31; n++) if (audit_tree_match(p->c[n], tree)) return 1; } #endif return 0; } |
ca57ec0f0 audit: Add typesp... |
295 296 297 298 |
static int audit_compare_uid(kuid_t uid, struct audit_names *name, struct audit_field *f, struct audit_context *ctx) |
b34b03932 audit: complex in... |
299 300 |
{ struct audit_names *n; |
b34b03932 audit: complex in... |
301 |
int rc; |
ca57ec0f0 audit: Add typesp... |
302 |
|
b34b03932 audit: complex in... |
303 |
if (name) { |
ca57ec0f0 audit: Add typesp... |
304 |
rc = audit_uid_comparator(uid, f->op, name->uid); |
b34b03932 audit: complex in... |
305 306 307 |
if (rc) return rc; } |
ca57ec0f0 audit: Add typesp... |
308 |
|
b34b03932 audit: complex in... |
309 310 |
if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { |
ca57ec0f0 audit: Add typesp... |
311 312 313 314 315 316 317 |
rc = audit_uid_comparator(uid, f->op, n->uid); if (rc) return rc; } } return 0; } |
b34b03932 audit: complex in... |
318 |
|
ca57ec0f0 audit: Add typesp... |
319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 |
static int audit_compare_gid(kgid_t gid, struct audit_names *name, struct audit_field *f, struct audit_context *ctx) { struct audit_names *n; int rc; if (name) { rc = audit_gid_comparator(gid, f->op, name->gid); if (rc) return rc; } if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { rc = audit_gid_comparator(gid, f->op, n->gid); |
b34b03932 audit: complex in... |
336 337 338 339 340 341 |
if (rc) return rc; } } return 0; } |
02d86a568 audit: allow inte... |
342 343 344 345 346 347 |
static int audit_field_compare(struct task_struct *tsk, const struct cred *cred, struct audit_field *f, struct audit_context *ctx, struct audit_names *name) { |
02d86a568 audit: allow inte... |
348 |
switch (f->val) { |
4a6633ed0 audit: implement ... |
349 |
/* process to file object comparisons */ |
02d86a568 audit: allow inte... |
350 |
case AUDIT_COMPARE_UID_TO_OBJ_UID: |
ca57ec0f0 audit: Add typesp... |
351 |
return audit_compare_uid(cred->uid, name, f, ctx); |
c9fe685f7 audit: allow inte... |
352 |
case AUDIT_COMPARE_GID_TO_OBJ_GID: |
ca57ec0f0 audit: Add typesp... |
353 |
return audit_compare_gid(cred->gid, name, f, ctx); |
4a6633ed0 audit: implement ... |
354 |
case AUDIT_COMPARE_EUID_TO_OBJ_UID: |
ca57ec0f0 audit: Add typesp... |
355 |
return audit_compare_uid(cred->euid, name, f, ctx); |
4a6633ed0 audit: implement ... |
356 |
case AUDIT_COMPARE_EGID_TO_OBJ_GID: |
ca57ec0f0 audit: Add typesp... |
357 |
return audit_compare_gid(cred->egid, name, f, ctx); |
4a6633ed0 audit: implement ... |
358 |
case AUDIT_COMPARE_AUID_TO_OBJ_UID: |
ca57ec0f0 audit: Add typesp... |
359 |
return audit_compare_uid(tsk->loginuid, name, f, ctx); |
4a6633ed0 audit: implement ... |
360 |
case AUDIT_COMPARE_SUID_TO_OBJ_UID: |
ca57ec0f0 audit: Add typesp... |
361 |
return audit_compare_uid(cred->suid, name, f, ctx); |
4a6633ed0 audit: implement ... |
362 |
case AUDIT_COMPARE_SGID_TO_OBJ_GID: |
ca57ec0f0 audit: Add typesp... |
363 |
return audit_compare_gid(cred->sgid, name, f, ctx); |
4a6633ed0 audit: implement ... |
364 |
case AUDIT_COMPARE_FSUID_TO_OBJ_UID: |
ca57ec0f0 audit: Add typesp... |
365 |
return audit_compare_uid(cred->fsuid, name, f, ctx); |
4a6633ed0 audit: implement ... |
366 |
case AUDIT_COMPARE_FSGID_TO_OBJ_GID: |
ca57ec0f0 audit: Add typesp... |
367 |
return audit_compare_gid(cred->fsgid, name, f, ctx); |
10d683608 audit: comparison... |
368 369 |
/* uid comparisons */ case AUDIT_COMPARE_UID_TO_AUID: |
ca57ec0f0 audit: Add typesp... |
370 |
return audit_uid_comparator(cred->uid, f->op, tsk->loginuid); |
10d683608 audit: comparison... |
371 |
case AUDIT_COMPARE_UID_TO_EUID: |
ca57ec0f0 audit: Add typesp... |
372 |
return audit_uid_comparator(cred->uid, f->op, cred->euid); |
10d683608 audit: comparison... |
373 |
case AUDIT_COMPARE_UID_TO_SUID: |
ca57ec0f0 audit: Add typesp... |
374 |
return audit_uid_comparator(cred->uid, f->op, cred->suid); |
10d683608 audit: comparison... |
375 |
case AUDIT_COMPARE_UID_TO_FSUID: |
ca57ec0f0 audit: Add typesp... |
376 |
return audit_uid_comparator(cred->uid, f->op, cred->fsuid); |
10d683608 audit: comparison... |
377 378 |
/* auid comparisons */ case AUDIT_COMPARE_AUID_TO_EUID: |
ca57ec0f0 audit: Add typesp... |
379 |
return audit_uid_comparator(tsk->loginuid, f->op, cred->euid); |
10d683608 audit: comparison... |
380 |
case AUDIT_COMPARE_AUID_TO_SUID: |
ca57ec0f0 audit: Add typesp... |
381 |
return audit_uid_comparator(tsk->loginuid, f->op, cred->suid); |
10d683608 audit: comparison... |
382 |
case AUDIT_COMPARE_AUID_TO_FSUID: |
ca57ec0f0 audit: Add typesp... |
383 |
return audit_uid_comparator(tsk->loginuid, f->op, cred->fsuid); |
10d683608 audit: comparison... |
384 385 |
/* euid comparisons */ case AUDIT_COMPARE_EUID_TO_SUID: |
ca57ec0f0 audit: Add typesp... |
386 |
return audit_uid_comparator(cred->euid, f->op, cred->suid); |
10d683608 audit: comparison... |
387 |
case AUDIT_COMPARE_EUID_TO_FSUID: |
ca57ec0f0 audit: Add typesp... |
388 |
return audit_uid_comparator(cred->euid, f->op, cred->fsuid); |
10d683608 audit: comparison... |
389 390 |
/* suid comparisons */ case AUDIT_COMPARE_SUID_TO_FSUID: |
ca57ec0f0 audit: Add typesp... |
391 |
return audit_uid_comparator(cred->suid, f->op, cred->fsuid); |
10d683608 audit: comparison... |
392 393 |
/* gid comparisons */ case AUDIT_COMPARE_GID_TO_EGID: |
ca57ec0f0 audit: Add typesp... |
394 |
return audit_gid_comparator(cred->gid, f->op, cred->egid); |
10d683608 audit: comparison... |
395 |
case AUDIT_COMPARE_GID_TO_SGID: |
ca57ec0f0 audit: Add typesp... |
396 |
return audit_gid_comparator(cred->gid, f->op, cred->sgid); |
10d683608 audit: comparison... |
397 |
case AUDIT_COMPARE_GID_TO_FSGID: |
ca57ec0f0 audit: Add typesp... |
398 |
return audit_gid_comparator(cred->gid, f->op, cred->fsgid); |
10d683608 audit: comparison... |
399 400 |
/* egid comparisons */ case AUDIT_COMPARE_EGID_TO_SGID: |
ca57ec0f0 audit: Add typesp... |
401 |
return audit_gid_comparator(cred->egid, f->op, cred->sgid); |
10d683608 audit: comparison... |
402 |
case AUDIT_COMPARE_EGID_TO_FSGID: |
ca57ec0f0 audit: Add typesp... |
403 |
return audit_gid_comparator(cred->egid, f->op, cred->fsgid); |
10d683608 audit: comparison... |
404 405 |
/* sgid comparison */ case AUDIT_COMPARE_SGID_TO_FSGID: |
ca57ec0f0 audit: Add typesp... |
406 |
return audit_gid_comparator(cred->sgid, f->op, cred->fsgid); |
02d86a568 audit: allow inte... |
407 408 409 410 411 412 413 |
default: WARN(1, "Missing AUDIT_COMPARE define. Report as a bug "); return 0; } return 0; } |
f368c07d7 [PATCH] audit: pa... |
414 |
/* Determine if any context name data matches a rule's watch data */ |
1da177e4c Linux-2.6.12-rc2 |
415 |
/* Compare a task_struct with an audit_rule. Return 1 on match, 0 |
f56298835 audit: acquire cr... |
416 417 418 419 420 421 |
* otherwise. * * If task_creation is true, this is an explicit indication that we are * filtering a task rule at task creation time. This and tsk == current are * the only situations where tsk->cred may be accessed without an rcu read lock. */ |
1da177e4c Linux-2.6.12-rc2 |
422 |
static int audit_filter_rules(struct task_struct *tsk, |
93315ed6d [PATCH] audit str... |
423 |
struct audit_krule *rule, |
1da177e4c Linux-2.6.12-rc2 |
424 |
struct audit_context *ctx, |
f368c07d7 [PATCH] audit: pa... |
425 |
struct audit_names *name, |
f56298835 audit: acquire cr... |
426 427 |
enum audit_state *state, bool task_creation) |
1da177e4c Linux-2.6.12-rc2 |
428 |
{ |
f56298835 audit: acquire cr... |
429 |
const struct cred *cred; |
5195d8e21 audit: dynamicall... |
430 |
int i, need_sid = 1; |
3dc7e3153 [PATCH] support f... |
431 |
u32 sid; |
8fae47705 audit: add suppor... |
432 |
unsigned int sessionid; |
3dc7e3153 [PATCH] support f... |
433 |
|
f56298835 audit: acquire cr... |
434 |
cred = rcu_dereference_check(tsk->cred, tsk == current || task_creation); |
1da177e4c Linux-2.6.12-rc2 |
435 |
for (i = 0; i < rule->field_count; i++) { |
93315ed6d [PATCH] audit str... |
436 |
struct audit_field *f = &rule->fields[i]; |
5195d8e21 audit: dynamicall... |
437 |
struct audit_names *n; |
1da177e4c Linux-2.6.12-rc2 |
438 |
int result = 0; |
f1dc4867f audit: anchor all... |
439 |
pid_t pid; |
1da177e4c Linux-2.6.12-rc2 |
440 |
|
93315ed6d [PATCH] audit str... |
441 |
switch (f->type) { |
1da177e4c Linux-2.6.12-rc2 |
442 |
case AUDIT_PID: |
fa2bea2f5 audit: consistent... |
443 |
pid = task_tgid_nr(tsk); |
f1dc4867f audit: anchor all... |
444 |
result = audit_comparator(pid, f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
445 |
break; |
3c66251e5 [PATCH] add filte... |
446 |
case AUDIT_PPID: |
419c58f11 [PATCH] PPID filt... |
447 448 |
if (ctx) { if (!ctx->ppid) |
c92cdeb45 audit: convert PP... |
449 |
ctx->ppid = task_ppid_nr(tsk); |
3c66251e5 [PATCH] add filte... |
450 |
result = audit_comparator(ctx->ppid, f->op, f->val); |
419c58f11 [PATCH] PPID filt... |
451 |
} |
3c66251e5 [PATCH] add filte... |
452 |
break; |
34d99af52 audit: implement ... |
453 454 |
case AUDIT_EXE: result = audit_exe_compare(tsk, rule->exe); |
06d6d1ad2 audit: allow not ... |
455 456 |
if (f->op == Audit_not_equal) result = !result; |
34d99af52 audit: implement ... |
457 |
break; |
1da177e4c Linux-2.6.12-rc2 |
458 |
case AUDIT_UID: |
ca57ec0f0 audit: Add typesp... |
459 |
result = audit_uid_comparator(cred->uid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
460 461 |
break; case AUDIT_EUID: |
ca57ec0f0 audit: Add typesp... |
462 |
result = audit_uid_comparator(cred->euid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
463 464 |
break; case AUDIT_SUID: |
ca57ec0f0 audit: Add typesp... |
465 |
result = audit_uid_comparator(cred->suid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
466 467 |
break; case AUDIT_FSUID: |
ca57ec0f0 audit: Add typesp... |
468 |
result = audit_uid_comparator(cred->fsuid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
469 470 |
break; case AUDIT_GID: |
ca57ec0f0 audit: Add typesp... |
471 |
result = audit_gid_comparator(cred->gid, f->op, f->gid); |
37eebe39c audit: improve GI... |
472 473 474 475 476 477 478 |
if (f->op == Audit_equal) { if (!result) result = in_group_p(f->gid); } else if (f->op == Audit_not_equal) { if (result) result = !in_group_p(f->gid); } |
1da177e4c Linux-2.6.12-rc2 |
479 480 |
break; case AUDIT_EGID: |
ca57ec0f0 audit: Add typesp... |
481 |
result = audit_gid_comparator(cred->egid, f->op, f->gid); |
37eebe39c audit: improve GI... |
482 483 484 485 486 487 488 |
if (f->op == Audit_equal) { if (!result) result = in_egroup_p(f->gid); } else if (f->op == Audit_not_equal) { if (result) result = !in_egroup_p(f->gid); } |
1da177e4c Linux-2.6.12-rc2 |
489 490 |
break; case AUDIT_SGID: |
ca57ec0f0 audit: Add typesp... |
491 |
result = audit_gid_comparator(cred->sgid, f->op, f->gid); |
1da177e4c Linux-2.6.12-rc2 |
492 493 |
break; case AUDIT_FSGID: |
ca57ec0f0 audit: Add typesp... |
494 |
result = audit_gid_comparator(cred->fsgid, f->op, f->gid); |
1da177e4c Linux-2.6.12-rc2 |
495 |
break; |
8fae47705 audit: add suppor... |
496 497 498 499 |
case AUDIT_SESSIONID: sessionid = audit_get_sessionid(current); result = audit_comparator(sessionid, f->op, f->val); break; |
1da177e4c Linux-2.6.12-rc2 |
500 |
case AUDIT_PERS: |
93315ed6d [PATCH] audit str... |
501 |
result = audit_comparator(tsk->personality, f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
502 |
break; |
2fd6f58ba [AUDIT] Don't all... |
503 |
case AUDIT_ARCH: |
9f8dbe9c9 whitespace fixes:... |
504 |
if (ctx) |
93315ed6d [PATCH] audit str... |
505 |
result = audit_comparator(ctx->arch, f->op, f->val); |
2fd6f58ba [AUDIT] Don't all... |
506 |
break; |
1da177e4c Linux-2.6.12-rc2 |
507 508 509 |
case AUDIT_EXIT: if (ctx && ctx->return_valid) |
93315ed6d [PATCH] audit str... |
510 |
result = audit_comparator(ctx->return_code, f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
511 512 |
break; case AUDIT_SUCCESS: |
b01f2cc1c [AUDIT] Allow fil... |
513 |
if (ctx && ctx->return_valid) { |
93315ed6d [PATCH] audit str... |
514 515 |
if (f->val) result = audit_comparator(ctx->return_valid, f->op, AUDITSC_SUCCESS); |
b01f2cc1c [AUDIT] Allow fil... |
516 |
else |
93315ed6d [PATCH] audit str... |
517 |
result = audit_comparator(ctx->return_valid, f->op, AUDITSC_FAILURE); |
b01f2cc1c [AUDIT] Allow fil... |
518 |
} |
1da177e4c Linux-2.6.12-rc2 |
519 520 |
break; case AUDIT_DEVMAJOR: |
16c174bd9 audit: check curr... |
521 522 523 524 525 |
if (name) { if (audit_comparator(MAJOR(name->dev), f->op, f->val) || audit_comparator(MAJOR(name->rdev), f->op, f->val)) ++result; } else if (ctx) { |
5195d8e21 audit: dynamicall... |
526 |
list_for_each_entry(n, &ctx->names_list, list) { |
16c174bd9 audit: check curr... |
527 528 |
if (audit_comparator(MAJOR(n->dev), f->op, f->val) || audit_comparator(MAJOR(n->rdev), f->op, f->val)) { |
1da177e4c Linux-2.6.12-rc2 |
529 530 531 532 533 534 535 |
++result; break; } } } break; case AUDIT_DEVMINOR: |
16c174bd9 audit: check curr... |
536 537 538 539 540 |
if (name) { if (audit_comparator(MINOR(name->dev), f->op, f->val) || audit_comparator(MINOR(name->rdev), f->op, f->val)) ++result; } else if (ctx) { |
5195d8e21 audit: dynamicall... |
541 |
list_for_each_entry(n, &ctx->names_list, list) { |
16c174bd9 audit: check curr... |
542 543 |
if (audit_comparator(MINOR(n->dev), f->op, f->val) || audit_comparator(MINOR(n->rdev), f->op, f->val)) { |
1da177e4c Linux-2.6.12-rc2 |
544 545 546 547 548 549 550 |
++result; break; } } } break; case AUDIT_INODE: |
f368c07d7 [PATCH] audit: pa... |
551 |
if (name) |
db510fc5c audit: update AUD... |
552 |
result = audit_comparator(name->ino, f->op, f->val); |
f368c07d7 [PATCH] audit: pa... |
553 |
else if (ctx) { |
5195d8e21 audit: dynamicall... |
554 555 |
list_for_each_entry(n, &ctx->names_list, list) { if (audit_comparator(n->ino, f->op, f->val)) { |
1da177e4c Linux-2.6.12-rc2 |
556 557 558 559 560 561 |
++result; break; } } } break; |
efaffd6e4 audit: allow matc... |
562 563 |
case AUDIT_OBJ_UID: if (name) { |
ca57ec0f0 audit: Add typesp... |
564 |
result = audit_uid_comparator(name->uid, f->op, f->uid); |
efaffd6e4 audit: allow matc... |
565 566 |
} else if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { |
ca57ec0f0 audit: Add typesp... |
567 |
if (audit_uid_comparator(n->uid, f->op, f->uid)) { |
efaffd6e4 audit: allow matc... |
568 569 570 571 572 573 |
++result; break; } } } break; |
54d3218b3 audit: allow audi... |
574 575 |
case AUDIT_OBJ_GID: if (name) { |
ca57ec0f0 audit: Add typesp... |
576 |
result = audit_gid_comparator(name->gid, f->op, f->gid); |
54d3218b3 audit: allow audi... |
577 578 |
} else if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { |
ca57ec0f0 audit: Add typesp... |
579 |
if (audit_gid_comparator(n->gid, f->op, f->gid)) { |
54d3218b3 audit: allow audi... |
580 581 582 583 584 585 |
++result; break; } } } break; |
f368c07d7 [PATCH] audit: pa... |
586 |
case AUDIT_WATCH: |
ae7b8f410 Audit: clean up t... |
587 588 |
if (name) result = audit_watch_compare(rule->watch, name->ino, name->dev); |
f368c07d7 [PATCH] audit: pa... |
589 |
break; |
74c3cbe33 [PATCH] audit: wa... |
590 591 592 593 |
case AUDIT_DIR: if (ctx) result = match_tree_refs(ctx, rule->tree); break; |
1da177e4c Linux-2.6.12-rc2 |
594 |
case AUDIT_LOGINUID: |
5c1390c9f audit: obsolete a... |
595 |
result = audit_uid_comparator(tsk->loginuid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
596 |
break; |
780a7654c audit: Make testi... |
597 598 599 |
case AUDIT_LOGINUID_SET: result = audit_comparator(audit_loginuid_set(tsk), f->op, f->val); break; |
3a6b9f85c [PATCH] audit: re... |
600 601 602 603 604 |
case AUDIT_SUBJ_USER: case AUDIT_SUBJ_ROLE: case AUDIT_SUBJ_TYPE: case AUDIT_SUBJ_SEN: case AUDIT_SUBJ_CLR: |
3dc7e3153 [PATCH] support f... |
605 606 607 608 609 |
/* NOTE: this may return negative values indicating a temporary error. We simply treat this as a match for now to avoid losing information that may be wanted. An error message will also be logged upon error */ |
04305e4af Audit: Final rena... |
610 |
if (f->lsm_rule) { |
2ad312d20 [PATCH] Audit Fil... |
611 |
if (need_sid) { |
2a862b32f Audit: use new LS... |
612 |
security_task_getsecid(tsk, &sid); |
2ad312d20 [PATCH] Audit Fil... |
613 614 |
need_sid = 0; } |
d7a96f3a1 Audit: internally... |
615 |
result = security_audit_rule_match(sid, f->type, |
3dc7e3153 [PATCH] support f... |
616 |
f->op, |
04305e4af Audit: Final rena... |
617 |
f->lsm_rule, |
3dc7e3153 [PATCH] support f... |
618 |
ctx); |
2ad312d20 [PATCH] Audit Fil... |
619 |
} |
3dc7e3153 [PATCH] support f... |
620 |
break; |
6e5a2d1d3 [PATCH] audit: su... |
621 622 623 624 625 626 627 |
case AUDIT_OBJ_USER: case AUDIT_OBJ_ROLE: case AUDIT_OBJ_TYPE: case AUDIT_OBJ_LEV_LOW: case AUDIT_OBJ_LEV_HIGH: /* The above note for AUDIT_SUBJ_USER...AUDIT_SUBJ_CLR also applies here */ |
04305e4af Audit: Final rena... |
628 |
if (f->lsm_rule) { |
6e5a2d1d3 [PATCH] audit: su... |
629 630 |
/* Find files that match */ if (name) { |
d7a96f3a1 Audit: internally... |
631 |
result = security_audit_rule_match( |
6e5a2d1d3 [PATCH] audit: su... |
632 |
name->osid, f->type, f->op, |
04305e4af Audit: Final rena... |
633 |
f->lsm_rule, ctx); |
6e5a2d1d3 [PATCH] audit: su... |
634 |
} else if (ctx) { |
5195d8e21 audit: dynamicall... |
635 636 637 638 |
list_for_each_entry(n, &ctx->names_list, list) { if (security_audit_rule_match(n->osid, f->type, f->op, f->lsm_rule, ctx)) { |
6e5a2d1d3 [PATCH] audit: su... |
639 640 641 642 643 644 |
++result; break; } } } /* Find ipc objects that match */ |
a33e67510 sanitize audit_ip... |
645 646 647 648 649 650 |
if (!ctx || ctx->type != AUDIT_IPC) break; if (security_audit_rule_match(ctx->ipc.osid, f->type, f->op, f->lsm_rule, ctx)) ++result; |
6e5a2d1d3 [PATCH] audit: su... |
651 652 |
} break; |
1da177e4c Linux-2.6.12-rc2 |
653 654 655 656 657 |
case AUDIT_ARG0: case AUDIT_ARG1: case AUDIT_ARG2: case AUDIT_ARG3: if (ctx) |
93315ed6d [PATCH] audit str... |
658 |
result = audit_comparator(ctx->argv[f->type-AUDIT_ARG0], f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
659 |
break; |
5adc8a6ad [PATCH] add rule ... |
660 661 662 663 |
case AUDIT_FILTERKEY: /* ignore this field for filtering */ result = 1; break; |
55669bfa1 [PATCH] audit: AU... |
664 665 666 |
case AUDIT_PERM: result = audit_match_perm(ctx, f->val); break; |
8b67dca94 [PATCH] new predi... |
667 668 669 |
case AUDIT_FILETYPE: result = audit_match_filetype(ctx, f->val); break; |
02d86a568 audit: allow inte... |
670 671 672 |
case AUDIT_FIELD_COMPARE: result = audit_field_compare(tsk, cred, f, ctx, name); break; |
1da177e4c Linux-2.6.12-rc2 |
673 |
} |
f56298835 audit: acquire cr... |
674 |
if (!result) |
1da177e4c Linux-2.6.12-rc2 |
675 676 |
return 0; } |
0590b9335 fixing audit rule... |
677 678 679 680 681 682 683 684 685 686 |
if (ctx) { if (rule->prio <= ctx->prio) return 0; if (rule->filterkey) { kfree(ctx->filterkey); ctx->filterkey = kstrdup(rule->filterkey, GFP_ATOMIC); } ctx->prio = rule->prio; } |
1da177e4c Linux-2.6.12-rc2 |
687 |
switch (rule->action) { |
66b12abc8 audit: fix some h... |
688 689 690 691 692 693 |
case AUDIT_NEVER: *state = AUDIT_DISABLED; break; case AUDIT_ALWAYS: *state = AUDIT_RECORD_CONTEXT; break; |
1da177e4c Linux-2.6.12-rc2 |
694 695 696 697 698 699 700 701 |
} return 1; } /* At process creation time, we can determine if system-call auditing is * completely disabled for this task. Since we only have the task * structure at this point, we can only check uid and gid. */ |
e048e02c8 make sure that fi... |
702 |
static enum audit_state audit_filter_task(struct task_struct *tsk, char **key) |
1da177e4c Linux-2.6.12-rc2 |
703 704 705 706 707 |
{ struct audit_entry *e; enum audit_state state; rcu_read_lock(); |
0f45aa18e AUDIT: Allow filt... |
708 |
list_for_each_entry_rcu(e, &audit_filter_list[AUDIT_FILTER_TASK], list) { |
f56298835 audit: acquire cr... |
709 710 |
if (audit_filter_rules(tsk, &e->rule, NULL, NULL, &state, true)) { |
e048e02c8 make sure that fi... |
711 712 |
if (state == AUDIT_RECORD_CONTEXT) *key = kstrdup(e->rule.filterkey, GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
713 714 715 716 717 718 719 |
rcu_read_unlock(); return state; } } rcu_read_unlock(); return AUDIT_BUILD_CONTEXT; } |
a3c549311 auditsc: audit_kr... |
720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 |
static int audit_in_mask(const struct audit_krule *rule, unsigned long val) { int word, bit; if (val > 0xffffffff) return false; word = AUDIT_WORD(val); if (word >= AUDIT_BITMASK_SIZE) return false; bit = AUDIT_BIT(val); return rule->mask[word] & bit; } |
1da177e4c Linux-2.6.12-rc2 |
735 736 |
/* At syscall entry and exit time, this filter is called if the * audit_state is not low enough that auditing cannot take place, but is |
23f32d18a AUDIT: Fix some s... |
737 |
* also not high enough that we already know we have to write an audit |
b0dd25a82 [PATCH] AUDIT: ke... |
738 |
* record (i.e., the state is AUDIT_SETUP_CONTEXT or AUDIT_BUILD_CONTEXT). |
1da177e4c Linux-2.6.12-rc2 |
739 740 741 742 743 744 |
*/ static enum audit_state audit_filter_syscall(struct task_struct *tsk, struct audit_context *ctx, struct list_head *list) { struct audit_entry *e; |
c38964959 AUDIT: Speed up a... |
745 |
enum audit_state state; |
1da177e4c Linux-2.6.12-rc2 |
746 |
|
5b52330bb audit: fix auditd... |
747 |
if (auditd_test_task(tsk)) |
f7056d64a AUDIT: Really exe... |
748 |
return AUDIT_DISABLED; |
1da177e4c Linux-2.6.12-rc2 |
749 |
rcu_read_lock(); |
c38964959 AUDIT: Speed up a... |
750 |
if (!list_empty(list)) { |
b63862f46 [PATCH] Filter ru... |
751 |
list_for_each_entry_rcu(e, list, list) { |
a3c549311 auditsc: audit_kr... |
752 |
if (audit_in_mask(&e->rule, ctx->major) && |
f368c07d7 [PATCH] audit: pa... |
753 |
audit_filter_rules(tsk, &e->rule, ctx, NULL, |
f56298835 audit: acquire cr... |
754 |
&state, false)) { |
f368c07d7 [PATCH] audit: pa... |
755 |
rcu_read_unlock(); |
0590b9335 fixing audit rule... |
756 |
ctx->current_state = state; |
f368c07d7 [PATCH] audit: pa... |
757 758 759 760 761 762 763 |
return state; } } } rcu_read_unlock(); return AUDIT_BUILD_CONTEXT; } |
5195d8e21 audit: dynamicall... |
764 765 766 767 768 769 770 |
/* * Given an audit_name check the inode hash table to see if they match. * Called holding the rcu read lock to protect the use of audit_inode_hash */ static int audit_filter_inode_name(struct task_struct *tsk, struct audit_names *n, struct audit_context *ctx) { |
5195d8e21 audit: dynamicall... |
771 772 773 774 |
int h = audit_hash_ino((u32)n->ino); struct list_head *list = &audit_inode_hash[h]; struct audit_entry *e; enum audit_state state; |
5195d8e21 audit: dynamicall... |
775 776 777 778 |
if (list_empty(list)) return 0; list_for_each_entry_rcu(e, list, list) { |
a3c549311 auditsc: audit_kr... |
779 |
if (audit_in_mask(&e->rule, ctx->major) && |
5195d8e21 audit: dynamicall... |
780 781 782 783 784 785 786 787 788 789 |
audit_filter_rules(tsk, &e->rule, ctx, n, &state, false)) { ctx->current_state = state; return 1; } } return 0; } /* At syscall exit time, this filter is called if any audit_names have been |
f368c07d7 [PATCH] audit: pa... |
790 |
* collected during syscall processing. We only check rules in sublists at hash |
5195d8e21 audit: dynamicall... |
791 |
* buckets applicable to the inode numbers in audit_names. |
f368c07d7 [PATCH] audit: pa... |
792 793 |
* Regarding audit_state, same rules apply as for audit_filter_syscall(). */ |
0590b9335 fixing audit rule... |
794 |
void audit_filter_inodes(struct task_struct *tsk, struct audit_context *ctx) |
f368c07d7 [PATCH] audit: pa... |
795 |
{ |
5195d8e21 audit: dynamicall... |
796 |
struct audit_names *n; |
f368c07d7 [PATCH] audit: pa... |
797 |
|
5b52330bb audit: fix auditd... |
798 |
if (auditd_test_task(tsk)) |
0590b9335 fixing audit rule... |
799 |
return; |
f368c07d7 [PATCH] audit: pa... |
800 801 |
rcu_read_lock(); |
f368c07d7 [PATCH] audit: pa... |
802 |
|
5195d8e21 audit: dynamicall... |
803 804 805 |
list_for_each_entry(n, &ctx->names_list, list) { if (audit_filter_inode_name(tsk, n, ctx)) break; |
0f45aa18e AUDIT: Allow filt... |
806 807 |
} rcu_read_unlock(); |
0f45aa18e AUDIT: Allow filt... |
808 |
} |
4a3eb726d audit: rename the... |
809 810 |
/* Transfer the audit context pointer to the caller, clearing it in the tsk's struct */ static inline struct audit_context *audit_take_context(struct task_struct *tsk, |
1da177e4c Linux-2.6.12-rc2 |
811 |
int return_valid, |
6d208da89 audit: Fix possib... |
812 |
long return_code) |
1da177e4c Linux-2.6.12-rc2 |
813 814 |
{ struct audit_context *context = tsk->audit_context; |
56179a6ec audit: drop some ... |
815 |
if (!context) |
1da177e4c Linux-2.6.12-rc2 |
816 817 |
return NULL; context->return_valid = return_valid; |
f701b75ed [AUDIT] return EI... |
818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 |
/* * we need to fix up the return code in the audit logs if the actual * return codes are later going to be fixed up by the arch specific * signal handlers * * This is actually a test for: * (rc == ERESTARTSYS ) || (rc == ERESTARTNOINTR) || * (rc == ERESTARTNOHAND) || (rc == ERESTART_RESTARTBLOCK) * * but is faster than a bunch of || */ if (unlikely(return_code <= -ERESTARTSYS) && (return_code >= -ERESTART_RESTARTBLOCK) && (return_code != -ENOIOCTLCMD)) context->return_code = -EINTR; else context->return_code = return_code; |
1da177e4c Linux-2.6.12-rc2 |
836 |
|
0590b9335 fixing audit rule... |
837 838 839 |
if (context->in_syscall && !context->dummy) { audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_EXIT]); audit_filter_inodes(tsk, context); |
1da177e4c Linux-2.6.12-rc2 |
840 |
} |
1da177e4c Linux-2.6.12-rc2 |
841 842 843 |
tsk->audit_context = NULL; return context; } |
3f1c82502 audit: Audit proc... |
844 845 846 847 848 849 |
static inline void audit_proctitle_free(struct audit_context *context) { kfree(context->proctitle.value); context->proctitle.value = NULL; context->proctitle.len = 0; } |
1da177e4c Linux-2.6.12-rc2 |
850 851 |
static inline void audit_free_names(struct audit_context *context) { |
5195d8e21 audit: dynamicall... |
852 |
struct audit_names *n, *next; |
1da177e4c Linux-2.6.12-rc2 |
853 |
|
5195d8e21 audit: dynamicall... |
854 855 |
list_for_each_entry_safe(n, next, &context->names_list, list) { list_del(&n->list); |
55422d0bd audit: replace ge... |
856 857 |
if (n->name) putname(n->name); |
5195d8e21 audit: dynamicall... |
858 859 |
if (n->should_free) kfree(n); |
8c8570fb8 [PATCH] Capture s... |
860 |
} |
1da177e4c Linux-2.6.12-rc2 |
861 |
context->name_count = 0; |
44707fdf5 d_path: Use struc... |
862 863 864 |
path_put(&context->pwd); context->pwd.dentry = NULL; context->pwd.mnt = NULL; |
1da177e4c Linux-2.6.12-rc2 |
865 866 867 868 869 870 871 872 873 874 |
} static inline void audit_free_aux(struct audit_context *context) { struct audit_aux_data *aux; while ((aux = context->aux)) { context->aux = aux->next; kfree(aux); } |
e54dc2431 [PATCH] audit sig... |
875 876 877 878 |
while ((aux = context->aux_pids)) { context->aux_pids = aux->next; kfree(aux); } |
1da177e4c Linux-2.6.12-rc2 |
879 |
} |
1da177e4c Linux-2.6.12-rc2 |
880 881 882 |
static inline struct audit_context *audit_alloc_context(enum audit_state state) { struct audit_context *context; |
17c6ee707 auditsc: Use kzal... |
883 884 |
context = kzalloc(sizeof(*context), GFP_KERNEL); if (!context) |
1da177e4c Linux-2.6.12-rc2 |
885 |
return NULL; |
e2c5adc88 auditsc: remove a... |
886 887 |
context->state = state; context->prio = state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0; |
916d75761 Fix rule eviction... |
888 |
INIT_LIST_HEAD(&context->killed_trees); |
5195d8e21 audit: dynamicall... |
889 |
INIT_LIST_HEAD(&context->names_list); |
1da177e4c Linux-2.6.12-rc2 |
890 891 |
return context; } |
b0dd25a82 [PATCH] AUDIT: ke... |
892 893 894 895 896 |
/** * audit_alloc - allocate an audit context block for a task * @tsk: task * * Filter on the task information and allocate a per-task audit context |
1da177e4c Linux-2.6.12-rc2 |
897 898 |
* if necessary. Doing so turns on system call auditing for the * specified task. This is called from copy_process, so no lock is |
b0dd25a82 [PATCH] AUDIT: ke... |
899 900 |
* needed. */ |
1da177e4c Linux-2.6.12-rc2 |
901 902 903 904 |
int audit_alloc(struct task_struct *tsk) { struct audit_context *context; enum audit_state state; |
e048e02c8 make sure that fi... |
905 |
char *key = NULL; |
1da177e4c Linux-2.6.12-rc2 |
906 |
|
b593d384e [AUDIT] create co... |
907 |
if (likely(!audit_ever_enabled)) |
1da177e4c Linux-2.6.12-rc2 |
908 |
return 0; /* Return if not auditing. */ |
e048e02c8 make sure that fi... |
909 |
state = audit_filter_task(tsk, &key); |
d48d80512 audit_alloc: clea... |
910 911 |
if (state == AUDIT_DISABLED) { clear_tsk_thread_flag(tsk, TIF_SYSCALL_AUDIT); |
1da177e4c Linux-2.6.12-rc2 |
912 |
return 0; |
d48d80512 audit_alloc: clea... |
913 |
} |
1da177e4c Linux-2.6.12-rc2 |
914 915 |
if (!(context = audit_alloc_context(state))) { |
e048e02c8 make sure that fi... |
916 |
kfree(key); |
1da177e4c Linux-2.6.12-rc2 |
917 918 919 |
audit_log_lost("out of memory in audit_alloc"); return -ENOMEM; } |
e048e02c8 make sure that fi... |
920 |
context->filterkey = key; |
1da177e4c Linux-2.6.12-rc2 |
921 |
|
1da177e4c Linux-2.6.12-rc2 |
922 923 924 925 926 927 928 |
tsk->audit_context = context; set_tsk_thread_flag(tsk, TIF_SYSCALL_AUDIT); return 0; } static inline void audit_free_context(struct audit_context *context) { |
c62d773a3 audit: no nested ... |
929 930 931 932 933 934 |
audit_free_names(context); unroll_tree_refs(context, NULL, 0); free_tree_refs(context); audit_free_aux(context); kfree(context->filterkey); kfree(context->sockaddr); |
3f1c82502 audit: Audit proc... |
935 |
audit_proctitle_free(context); |
c62d773a3 audit: no nested ... |
936 |
kfree(context); |
1da177e4c Linux-2.6.12-rc2 |
937 |
} |
e54dc2431 [PATCH] audit sig... |
938 |
static int audit_log_pid_context(struct audit_context *context, pid_t pid, |
cca080d9b userns: Convert a... |
939 |
kuid_t auid, kuid_t uid, unsigned int sessionid, |
4746ec5b0 [AUDIT] add sessi... |
940 |
u32 sid, char *comm) |
e54dc2431 [PATCH] audit sig... |
941 942 |
{ struct audit_buffer *ab; |
2a862b32f Audit: use new LS... |
943 |
char *ctx = NULL; |
e54dc2431 [PATCH] audit sig... |
944 945 946 947 948 |
u32 len; int rc = 0; ab = audit_log_start(context, GFP_KERNEL, AUDIT_OBJ_PID); if (!ab) |
6246ccab9 [AUDIT] do not pa... |
949 |
return rc; |
e54dc2431 [PATCH] audit sig... |
950 |
|
e1760bd5f userns: Convert t... |
951 952 |
audit_log_format(ab, "opid=%d oauid=%d ouid=%d oses=%d", pid, from_kuid(&init_user_ns, auid), |
cca080d9b userns: Convert a... |
953 |
from_kuid(&init_user_ns, uid), sessionid); |
ad395abec Audit: do not pri... |
954 955 956 957 958 959 960 961 |
if (sid) { if (security_secid_to_secctx(sid, &ctx, &len)) { audit_log_format(ab, " obj=(none)"); rc = 1; } else { audit_log_format(ab, " obj=%s", ctx); security_release_secctx(ctx, len); } |
2a862b32f Audit: use new LS... |
962 |
} |
c2a7780ef [AUDIT] collect u... |
963 964 |
audit_log_format(ab, " ocomm="); audit_log_untrustedstring(ab, comm); |
e54dc2431 [PATCH] audit sig... |
965 |
audit_log_end(ab); |
e54dc2431 [PATCH] audit sig... |
966 967 968 |
return rc; } |
43761473c audit: fix a doub... |
969 970 |
static void audit_log_execve_info(struct audit_context *context, struct audit_buffer **ab) |
bdf4c48af audit: rework exe... |
971 |
{ |
43761473c audit: fix a doub... |
972 973 974 975 |
long len_max; long len_rem; long len_full; long len_buf; |
8443075ea audit: tame initi... |
976 |
long len_abuf = 0; |
43761473c audit: fix a doub... |
977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 |
long len_tmp; bool require_data; bool encode; unsigned int iter; unsigned int arg; char *buf_head; char *buf; const char __user *p = (const char __user *)current->mm->arg_start; /* NOTE: this buffer needs to be large enough to hold all the non-arg * data we put in the audit record for this argument (see the * code below) ... at this point in time 96 is plenty */ char abuf[96]; /* NOTE: we set MAX_EXECVE_AUDIT_LEN to a rather arbitrary limit, the * current value of 7500 is not as important as the fact that it * is less than 8k, a setting of 7500 gives us plenty of wiggle * room if we go over a little bit in the logging below */ WARN_ON_ONCE(MAX_EXECVE_AUDIT_LEN > 7500); len_max = MAX_EXECVE_AUDIT_LEN; /* scratch buffer to hold the userspace args */ buf_head = kmalloc(MAX_EXECVE_AUDIT_LEN + 1, GFP_KERNEL); if (!buf_head) { audit_panic("out of memory for argv string"); return; |
de6bbd1d3 [AUDIT] break lar... |
1003 |
} |
43761473c audit: fix a doub... |
1004 |
buf = buf_head; |
040b3a2df audit: fix two bu... |
1005 |
|
43761473c audit: fix a doub... |
1006 |
audit_log_format(*ab, "argc=%d", context->execve.argc); |
040b3a2df audit: fix two bu... |
1007 |
|
43761473c audit: fix a doub... |
1008 1009 1010 1011 1012 1013 1014 |
len_rem = len_max; len_buf = 0; len_full = 0; require_data = true; encode = false; iter = 0; arg = 0; |
de6bbd1d3 [AUDIT] break lar... |
1015 |
do { |
43761473c audit: fix a doub... |
1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 |
/* NOTE: we don't ever want to trust this value for anything * serious, but the audit record format insists we * provide an argument length for really long arguments, * e.g. > MAX_EXECVE_AUDIT_LEN, so we have no choice but * to use strncpy_from_user() to obtain this value for * recording in the log, although we don't use it * anywhere here to avoid a double-fetch problem */ if (len_full == 0) len_full = strnlen_user(p, MAX_ARG_STRLEN) - 1; /* read more data from userspace */ if (require_data) { /* can we make more room in the buffer? */ if (buf != buf_head) { memmove(buf_head, buf, len_buf); buf = buf_head; } /* fetch as much as we can of the argument */ len_tmp = strncpy_from_user(&buf_head[len_buf], p, len_max - len_buf); if (len_tmp == -EFAULT) { /* unable to copy from userspace */ send_sig(SIGKILL, current, 0); goto out; } else if (len_tmp == (len_max - len_buf)) { /* buffer is not large enough */ require_data = true; /* NOTE: if we are going to span multiple * buffers force the encoding so we stand * a chance at a sane len_full value and * consistent record encoding */ encode = true; len_full = len_full * 2; p += len_tmp; } else { require_data = false; if (!encode) encode = audit_string_contains_control( buf, len_tmp); /* try to use a trusted value for len_full */ if (len_full < len_max) len_full = (encode ? len_tmp * 2 : len_tmp); p += len_tmp + 1; } len_buf += len_tmp; buf_head[len_buf] = '\0'; |
bdf4c48af audit: rework exe... |
1064 |
|
43761473c audit: fix a doub... |
1065 1066 |
/* length of the buffer in the audit record? */ len_abuf = (encode ? len_buf * 2 : len_buf + 2); |
bdf4c48af audit: rework exe... |
1067 |
} |
de6bbd1d3 [AUDIT] break lar... |
1068 |
|
43761473c audit: fix a doub... |
1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 |
/* write as much as we can to the audit log */ if (len_buf > 0) { /* NOTE: some magic numbers here - basically if we * can't fit a reasonable amount of data into the * existing audit buffer, flush it and start with * a new buffer */ if ((sizeof(abuf) + 8) > len_rem) { len_rem = len_max; audit_log_end(*ab); *ab = audit_log_start(context, GFP_KERNEL, AUDIT_EXECVE); if (!*ab) goto out; } |
bdf4c48af audit: rework exe... |
1083 |
|
43761473c audit: fix a doub... |
1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 |
/* create the non-arg portion of the arg record */ len_tmp = 0; if (require_data || (iter > 0) || ((len_abuf + sizeof(abuf)) > len_rem)) { if (iter == 0) { len_tmp += snprintf(&abuf[len_tmp], sizeof(abuf) - len_tmp, " a%d_len=%lu", arg, len_full); } len_tmp += snprintf(&abuf[len_tmp], sizeof(abuf) - len_tmp, " a%d[%d]=", arg, iter++); } else len_tmp += snprintf(&abuf[len_tmp], sizeof(abuf) - len_tmp, " a%d=", arg); WARN_ON(len_tmp >= sizeof(abuf)); abuf[sizeof(abuf) - 1] = '\0'; /* log the arg in the audit record */ audit_log_format(*ab, "%s", abuf); len_rem -= len_tmp; len_tmp = len_buf; if (encode) { if (len_abuf > len_rem) len_tmp = len_rem / 2; /* encoding */ audit_log_n_hex(*ab, buf, len_tmp); len_rem -= len_tmp * 2; len_abuf -= len_tmp * 2; } else { if (len_abuf > len_rem) len_tmp = len_rem - 2; /* quotes */ audit_log_n_string(*ab, buf, len_tmp); len_rem -= len_tmp + 2; /* don't subtract the "2" because we still need * to add quotes to the remaining string */ len_abuf -= len_tmp; } len_buf -= len_tmp; buf += len_tmp; } |
bdf4c48af audit: rework exe... |
1126 |
|
43761473c audit: fix a doub... |
1127 1128 1129 1130 1131 1132 1133 1134 1135 |
/* ready to move to the next argument? */ if ((len_buf == 0) && !require_data) { arg++; iter = 0; len_full = 0; require_data = true; encode = false; } } while (arg < context->execve.argc); |
de6bbd1d3 [AUDIT] break lar... |
1136 |
|
43761473c audit: fix a doub... |
1137 |
/* NOTE: the caller handles the final audit_log_end() call */ |
de6bbd1d3 [AUDIT] break lar... |
1138 |
|
43761473c audit: fix a doub... |
1139 1140 |
out: kfree(buf_head); |
bdf4c48af audit: rework exe... |
1141 |
} |
a33e67510 sanitize audit_ip... |
1142 |
static void show_special(struct audit_context *context, int *call_panic) |
f3298dc4f sanitize audit_so... |
1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 |
{ struct audit_buffer *ab; int i; ab = audit_log_start(context, GFP_KERNEL, context->type); if (!ab) return; switch (context->type) { case AUDIT_SOCKETCALL: { int nargs = context->socketcall.nargs; audit_log_format(ab, "nargs=%d", nargs); for (i = 0; i < nargs; i++) audit_log_format(ab, " a%d=%lx", i, context->socketcall.args[i]); break; } |
a33e67510 sanitize audit_ip... |
1159 1160 |
case AUDIT_IPC: { u32 osid = context->ipc.osid; |
2570ebbd1 switch kern_ipc_p... |
1161 |
audit_log_format(ab, "ouid=%u ogid=%u mode=%#ho", |
cca080d9b userns: Convert a... |
1162 1163 1164 |
from_kuid(&init_user_ns, context->ipc.uid), from_kgid(&init_user_ns, context->ipc.gid), context->ipc.mode); |
a33e67510 sanitize audit_ip... |
1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 |
if (osid) { char *ctx = NULL; u32 len; if (security_secid_to_secctx(osid, &ctx, &len)) { audit_log_format(ab, " osid=%u", osid); *call_panic = 1; } else { audit_log_format(ab, " obj=%s", ctx); security_release_secctx(ctx, len); } } |
e816f370c sanitize audit_ip... |
1176 1177 1178 1179 |
if (context->ipc.has_perm) { audit_log_end(ab); ab = audit_log_start(context, GFP_KERNEL, AUDIT_IPC_SET_PERM); |
0644ec0cc audit: catch poss... |
1180 1181 |
if (unlikely(!ab)) return; |
e816f370c sanitize audit_ip... |
1182 |
audit_log_format(ab, |
2570ebbd1 switch kern_ipc_p... |
1183 |
"qbytes=%lx ouid=%u ogid=%u mode=%#ho", |
e816f370c sanitize audit_ip... |
1184 1185 1186 1187 |
context->ipc.qbytes, context->ipc.perm_uid, context->ipc.perm_gid, context->ipc.perm_mode); |
e816f370c sanitize audit_ip... |
1188 |
} |
a33e67510 sanitize audit_ip... |
1189 |
break; } |
fe8e52b9b audit: remove unn... |
1190 |
case AUDIT_MQ_OPEN: |
564f6993f sanitize audit_mq... |
1191 |
audit_log_format(ab, |
df0a42837 switch mq_open() ... |
1192 |
"oflag=0x%x mode=%#ho mq_flags=0x%lx mq_maxmsg=%ld " |
564f6993f sanitize audit_mq... |
1193 1194 1195 1196 1197 1198 |
"mq_msgsize=%ld mq_curmsgs=%ld", context->mq_open.oflag, context->mq_open.mode, context->mq_open.attr.mq_flags, context->mq_open.attr.mq_maxmsg, context->mq_open.attr.mq_msgsize, context->mq_open.attr.mq_curmsgs); |
fe8e52b9b audit: remove unn... |
1199 1200 |
break; case AUDIT_MQ_SENDRECV: |
c32c8af43 sanitize AUDIT_MQ... |
1201 1202 |
audit_log_format(ab, "mqdes=%d msg_len=%zd msg_prio=%u " |
b90477263 ipc: mqueue: Repl... |
1203 |
"abs_timeout_sec=%lld abs_timeout_nsec=%ld", |
c32c8af43 sanitize AUDIT_MQ... |
1204 1205 1206 |
context->mq_sendrecv.mqdes, context->mq_sendrecv.msg_len, context->mq_sendrecv.msg_prio, |
b90477263 ipc: mqueue: Repl... |
1207 |
(long long) context->mq_sendrecv.abs_timeout.tv_sec, |
c32c8af43 sanitize AUDIT_MQ... |
1208 |
context->mq_sendrecv.abs_timeout.tv_nsec); |
fe8e52b9b audit: remove unn... |
1209 1210 |
break; case AUDIT_MQ_NOTIFY: |
20114f71b sanitize audit_mq... |
1211 1212 1213 |
audit_log_format(ab, "mqdes=%d sigev_signo=%d", context->mq_notify.mqdes, context->mq_notify.sigev_signo); |
fe8e52b9b audit: remove unn... |
1214 |
break; |
7392906ea sanitize audit_mq... |
1215 1216 1217 1218 1219 1220 1221 1222 1223 |
case AUDIT_MQ_GETSETATTR: { struct mq_attr *attr = &context->mq_getsetattr.mqstat; audit_log_format(ab, "mqdes=%d mq_flags=0x%lx mq_maxmsg=%ld mq_msgsize=%ld " "mq_curmsgs=%ld ", context->mq_getsetattr.mqdes, attr->mq_flags, attr->mq_maxmsg, attr->mq_msgsize, attr->mq_curmsgs); break; } |
fe8e52b9b audit: remove unn... |
1224 |
case AUDIT_CAPSET: |
57f71a0af sanitize audit_lo... |
1225 1226 1227 1228 |
audit_log_format(ab, "pid=%d", context->capset.pid); audit_log_cap(ab, "cap_pi", &context->capset.cap.inheritable); audit_log_cap(ab, "cap_pp", &context->capset.cap.permitted); audit_log_cap(ab, "cap_pe", &context->capset.cap.effective); |
7786f6b6d audit: add ambien... |
1229 |
audit_log_cap(ab, "cap_pa", &context->capset.cap.ambient); |
fe8e52b9b audit: remove unn... |
1230 1231 |
break; case AUDIT_MMAP: |
120a795da audit mmap |
1232 1233 |
audit_log_format(ab, "fd=%d flags=0x%x", context->mmap.fd, context->mmap.flags); |
fe8e52b9b audit: remove unn... |
1234 1235 |
break; case AUDIT_EXECVE: |
d9cfea91e audit: move audit... |
1236 |
audit_log_execve_info(context, &ab); |
fe8e52b9b audit: remove unn... |
1237 |
break; |
ca86cad73 audit: log module... |
1238 1239 |
case AUDIT_KERN_MODULE: audit_log_format(ab, "name="); |
a1b5bcffe audit: fix potent... |
1240 1241 1242 1243 1244 |
if (context->module.name) { audit_log_untrustedstring(ab, context->module.name); kfree(context->module.name); } else audit_log_format(ab, "(null)"); |
ca86cad73 audit: log module... |
1245 |
break; |
f3298dc4f sanitize audit_so... |
1246 1247 1248 |
} audit_log_end(ab); } |
3f1c82502 audit: Audit proc... |
1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 |
static inline int audit_proctitle_rtrim(char *proctitle, int len) { char *end = proctitle + len - 1; while (end > proctitle && !isprint(*end)) end--; /* catch the case where proctitle is only 1 non-print character */ len = end - proctitle + 1; len -= isprint(proctitle[len-1]) == 0; return len; } static void audit_log_proctitle(struct task_struct *tsk, struct audit_context *context) { int res; char *buf; char *msg = "(null)"; int len = strlen(msg); struct audit_buffer *ab; ab = audit_log_start(context, GFP_KERNEL, AUDIT_PROCTITLE); if (!ab) return; /* audit_panic or being filtered */ audit_log_format(ab, "proctitle="); /* Not cached */ if (!context->proctitle.value) { buf = kmalloc(MAX_PROCTITLE_AUDIT_LEN, GFP_KERNEL); if (!buf) goto out; /* Historically called this from procfs naming */ res = get_cmdline(tsk, buf, MAX_PROCTITLE_AUDIT_LEN); if (res == 0) { kfree(buf); goto out; } res = audit_proctitle_rtrim(buf, res); if (res == 0) { kfree(buf); goto out; } context->proctitle.value = buf; context->proctitle.len = res; } msg = context->proctitle.value; len = context->proctitle.len; out: audit_log_n_untrustedstring(ab, msg, len); audit_log_end(ab); } |
e495149b1 [PATCH] drop gfp_... |
1301 |
static void audit_log_exit(struct audit_context *context, struct task_struct *tsk) |
1da177e4c Linux-2.6.12-rc2 |
1302 |
{ |
9c7aa6aa7 [PATCH] change ls... |
1303 |
int i, call_panic = 0; |
1da177e4c Linux-2.6.12-rc2 |
1304 |
struct audit_buffer *ab; |
7551ced33 AUDIT: Defer free... |
1305 |
struct audit_aux_data *aux; |
5195d8e21 audit: dynamicall... |
1306 |
struct audit_names *n; |
1da177e4c Linux-2.6.12-rc2 |
1307 |
|
e495149b1 [PATCH] drop gfp_... |
1308 |
/* tsk == current */ |
3f2792ffb [PATCH] take fill... |
1309 |
context->personality = tsk->personality; |
e495149b1 [PATCH] drop gfp_... |
1310 1311 |
ab = audit_log_start(context, GFP_KERNEL, AUDIT_SYSCALL); |
1da177e4c Linux-2.6.12-rc2 |
1312 1313 |
if (!ab) return; /* audit_panic has been called */ |
bccf6ae08 AUDIT: Unify auid... |
1314 1315 |
audit_log_format(ab, "arch=%x syscall=%d", context->arch, context->major); |
1da177e4c Linux-2.6.12-rc2 |
1316 1317 1318 |
if (context->personality != PER_LINUX) audit_log_format(ab, " per=%lx", context->personality); if (context->return_valid) |
9f8dbe9c9 whitespace fixes:... |
1319 |
audit_log_format(ab, " success=%s exit=%ld", |
2fd6f58ba [AUDIT] Don't all... |
1320 1321 |
(context->return_valid==AUDITSC_SUCCESS)?"yes":"no", context->return_code); |
eb84a20e9 [PATCH] audit/acc... |
1322 |
|
1da177e4c Linux-2.6.12-rc2 |
1323 |
audit_log_format(ab, |
e23eb920b audit: export aud... |
1324 1325 1326 1327 1328 1329 |
" a0=%lx a1=%lx a2=%lx a3=%lx items=%d", context->argv[0], context->argv[1], context->argv[2], context->argv[3], context->name_count); |
eb84a20e9 [PATCH] audit/acc... |
1330 |
|
e495149b1 [PATCH] drop gfp_... |
1331 |
audit_log_task_info(ab, tsk); |
9d9609851 Audit: clean up a... |
1332 |
audit_log_key(ab, context->filterkey); |
1da177e4c Linux-2.6.12-rc2 |
1333 |
audit_log_end(ab); |
1da177e4c Linux-2.6.12-rc2 |
1334 |
|
7551ced33 AUDIT: Defer free... |
1335 |
for (aux = context->aux; aux; aux = aux->next) { |
c04049939 AUDIT: Add messag... |
1336 |
|
e495149b1 [PATCH] drop gfp_... |
1337 |
ab = audit_log_start(context, GFP_KERNEL, aux->type); |
1da177e4c Linux-2.6.12-rc2 |
1338 1339 |
if (!ab) continue; /* audit_panic has been called */ |
1da177e4c Linux-2.6.12-rc2 |
1340 |
switch (aux->type) { |
20ca73bc7 [PATCH] Audit of ... |
1341 |
|
3fc689e96 Any time fcaps or... |
1342 1343 1344 1345 1346 1347 1348 1349 1350 |
case AUDIT_BPRM_FCAPS: { struct audit_aux_data_bprm_fcaps *axs = (void *)aux; audit_log_format(ab, "fver=%x", axs->fcap_ver); audit_log_cap(ab, "fp", &axs->fcap.permitted); audit_log_cap(ab, "fi", &axs->fcap.inheritable); audit_log_format(ab, " fe=%d", axs->fcap.fE); audit_log_cap(ab, "old_pp", &axs->old_pcap.permitted); audit_log_cap(ab, "old_pi", &axs->old_pcap.inheritable); audit_log_cap(ab, "old_pe", &axs->old_pcap.effective); |
7786f6b6d audit: add ambien... |
1351 1352 1353 1354 1355 |
audit_log_cap(ab, "old_pa", &axs->old_pcap.ambient); audit_log_cap(ab, "pp", &axs->new_pcap.permitted); audit_log_cap(ab, "pi", &axs->new_pcap.inheritable); audit_log_cap(ab, "pe", &axs->new_pcap.effective); audit_log_cap(ab, "pa", &axs->new_pcap.ambient); |
3fc689e96 Any time fcaps or... |
1356 |
break; } |
1da177e4c Linux-2.6.12-rc2 |
1357 1358 |
} audit_log_end(ab); |
1da177e4c Linux-2.6.12-rc2 |
1359 |
} |
f3298dc4f sanitize audit_so... |
1360 |
if (context->type) |
a33e67510 sanitize audit_ip... |
1361 |
show_special(context, &call_panic); |
f3298dc4f sanitize audit_so... |
1362 |
|
157cf649a sanitize audit_fd... |
1363 1364 1365 1366 1367 1368 1369 1370 |
if (context->fds[0] >= 0) { ab = audit_log_start(context, GFP_KERNEL, AUDIT_FD_PAIR); if (ab) { audit_log_format(ab, "fd0=%d fd1=%d", context->fds[0], context->fds[1]); audit_log_end(ab); } } |
4f6b434fe don't reallocate ... |
1371 1372 1373 1374 1375 1376 1377 1378 1379 |
if (context->sockaddr_len) { ab = audit_log_start(context, GFP_KERNEL, AUDIT_SOCKADDR); if (ab) { audit_log_format(ab, "saddr="); audit_log_n_hex(ab, (void *)context->sockaddr, context->sockaddr_len); audit_log_end(ab); } } |
e54dc2431 [PATCH] audit sig... |
1380 1381 |
for (aux = context->aux_pids; aux; aux = aux->next) { struct audit_aux_data_pids *axs = (void *)aux; |
e54dc2431 [PATCH] audit sig... |
1382 1383 1384 |
for (i = 0; i < axs->pid_count; i++) if (audit_log_pid_context(context, axs->target_pid[i], |
c2a7780ef [AUDIT] collect u... |
1385 1386 |
axs->target_auid[i], axs->target_uid[i], |
4746ec5b0 [AUDIT] add sessi... |
1387 |
axs->target_sessionid[i], |
c2a7780ef [AUDIT] collect u... |
1388 1389 |
axs->target_sid[i], axs->target_comm[i])) |
e54dc2431 [PATCH] audit sig... |
1390 |
call_panic = 1; |
a5cb013da [PATCH] auditing ... |
1391 |
} |
e54dc2431 [PATCH] audit sig... |
1392 1393 |
if (context->target_pid && audit_log_pid_context(context, context->target_pid, |
c2a7780ef [AUDIT] collect u... |
1394 |
context->target_auid, context->target_uid, |
4746ec5b0 [AUDIT] add sessi... |
1395 |
context->target_sessionid, |
c2a7780ef [AUDIT] collect u... |
1396 |
context->target_sid, context->target_comm)) |
e54dc2431 [PATCH] audit sig... |
1397 |
call_panic = 1; |
44707fdf5 d_path: Use struc... |
1398 |
if (context->pwd.dentry && context->pwd.mnt) { |
e495149b1 [PATCH] drop gfp_... |
1399 |
ab = audit_log_start(context, GFP_KERNEL, AUDIT_CWD); |
8f37d47c9 AUDIT: Record wor... |
1400 |
if (ab) { |
0b7a0fdb2 audit: fix whites... |
1401 |
audit_log_d_path(ab, "cwd=", &context->pwd); |
8f37d47c9 AUDIT: Record wor... |
1402 1403 1404 |
audit_log_end(ab); } } |
73241ccca [PATCH] Collect m... |
1405 |
|
5195d8e21 audit: dynamicall... |
1406 |
i = 0; |
79f6530cb audit: fix mq_ope... |
1407 1408 1409 |
list_for_each_entry(n, &context->names_list, list) { if (n->hidden) continue; |
b24a30a73 audit: fix event ... |
1410 |
audit_log_name(context, n, NULL, i++, &call_panic); |
79f6530cb audit: fix mq_ope... |
1411 |
} |
c0641f28d [AUDIT] Add End o... |
1412 |
|
3f1c82502 audit: Audit proc... |
1413 |
audit_log_proctitle(tsk, context); |
c0641f28d [AUDIT] Add End o... |
1414 1415 1416 1417 |
/* Send end of event record to help user space know we are finished */ ab = audit_log_start(context, GFP_KERNEL, AUDIT_EOE); if (ab) audit_log_end(ab); |
9c7aa6aa7 [PATCH] change ls... |
1418 1419 |
if (call_panic) audit_panic("error converting sid to string"); |
1da177e4c Linux-2.6.12-rc2 |
1420 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
1421 |
/** |
196a50855 audit: update the... |
1422 |
* __audit_free - free a per-task audit context |
b0dd25a82 [PATCH] AUDIT: ke... |
1423 1424 |
* @tsk: task whose audit context block to free * |
fa84cb935 [PATCH] move call... |
1425 |
* Called from copy_process and do_exit |
b0dd25a82 [PATCH] AUDIT: ke... |
1426 |
*/ |
a4ff8dba7 audit: inline aud... |
1427 |
void __audit_free(struct task_struct *tsk) |
1da177e4c Linux-2.6.12-rc2 |
1428 1429 |
{ struct audit_context *context; |
4a3eb726d audit: rename the... |
1430 |
context = audit_take_context(tsk, 0, 0); |
56179a6ec audit: drop some ... |
1431 |
if (!context) |
1da177e4c Linux-2.6.12-rc2 |
1432 1433 1434 |
return; /* Check for system calls that do not go through the exit |
9f8dbe9c9 whitespace fixes:... |
1435 1436 |
* function (e.g., exit_group), then free context block. * We use GFP_ATOMIC here because we might be doing this |
f55619642 AUDIT: Avoid sche... |
1437 |
* in the context of the idle thread */ |
e495149b1 [PATCH] drop gfp_... |
1438 |
/* that can happen only if we are called from do_exit() */ |
0590b9335 fixing audit rule... |
1439 |
if (context->in_syscall && context->current_state == AUDIT_RECORD_CONTEXT) |
e495149b1 [PATCH] drop gfp_... |
1440 |
audit_log_exit(context, tsk); |
916d75761 Fix rule eviction... |
1441 1442 |
if (!list_empty(&context->killed_trees)) audit_kill_trees(&context->killed_trees); |
1da177e4c Linux-2.6.12-rc2 |
1443 1444 1445 |
audit_free_context(context); } |
b0dd25a82 [PATCH] AUDIT: ke... |
1446 |
/** |
196a50855 audit: update the... |
1447 |
* __audit_syscall_entry - fill in an audit record at syscall entry |
b0dd25a82 [PATCH] AUDIT: ke... |
1448 1449 1450 1451 1452 1453 1454 |
* @major: major syscall type (function) * @a1: additional syscall register 1 * @a2: additional syscall register 2 * @a3: additional syscall register 3 * @a4: additional syscall register 4 * * Fill in audit context at syscall entry. This only happens if the |
1da177e4c Linux-2.6.12-rc2 |
1455 1456 1457 1458 1459 |
* audit context was created when the task was created and the state or * filters demand the audit context be built. If the state from the * per-task filter or from the per-syscall filter is AUDIT_RECORD_CONTEXT, * then the record will be written at syscall exit time (otherwise, it * will only be written if another part of the kernel requests that it |
b0dd25a82 [PATCH] AUDIT: ke... |
1460 1461 |
* be written). */ |
b4f0d3755 audit: x86: drop ... |
1462 1463 |
void __audit_syscall_entry(int major, unsigned long a1, unsigned long a2, unsigned long a3, unsigned long a4) |
1da177e4c Linux-2.6.12-rc2 |
1464 |
{ |
5411be59d [PATCH] drop task... |
1465 |
struct task_struct *tsk = current; |
1da177e4c Linux-2.6.12-rc2 |
1466 1467 |
struct audit_context *context = tsk->audit_context; enum audit_state state; |
56179a6ec audit: drop some ... |
1468 |
if (!context) |
86a1c34a9 x86_64 syscall au... |
1469 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1470 |
|
1da177e4c Linux-2.6.12-rc2 |
1471 1472 1473 1474 |
BUG_ON(context->in_syscall || context->name_count); if (!audit_enabled) return; |
4a99854c5 audit: __audit_sy... |
1475 |
context->arch = syscall_get_arch(); |
1da177e4c Linux-2.6.12-rc2 |
1476 1477 1478 1479 1480 1481 1482 |
context->major = major; context->argv[0] = a1; context->argv[1] = a2; context->argv[2] = a3; context->argv[3] = a4; state = context->state; |
d51374adf [PATCH] mark cont... |
1483 |
context->dummy = !audit_n_rules; |
0590b9335 fixing audit rule... |
1484 1485 |
if (!context->dummy && state == AUDIT_BUILD_CONTEXT) { context->prio = 0; |
0f45aa18e AUDIT: Allow filt... |
1486 |
state = audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_ENTRY]); |
0590b9335 fixing audit rule... |
1487 |
} |
56179a6ec audit: drop some ... |
1488 |
if (state == AUDIT_DISABLED) |
1da177e4c Linux-2.6.12-rc2 |
1489 |
return; |
ce625a801 AUDIT: Reduce con... |
1490 |
context->serial = 0; |
e832bf48c audit: Reduce ove... |
1491 |
context->ctime = current_kernel_time64(); |
1da177e4c Linux-2.6.12-rc2 |
1492 |
context->in_syscall = 1; |
0590b9335 fixing audit rule... |
1493 |
context->current_state = state; |
419c58f11 [PATCH] PPID filt... |
1494 |
context->ppid = 0; |
1da177e4c Linux-2.6.12-rc2 |
1495 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
1496 |
/** |
196a50855 audit: update the... |
1497 |
* __audit_syscall_exit - deallocate audit context after a system call |
42ae610c1 kernel-doc: fix n... |
1498 1499 |
* @success: success value of the syscall * @return_code: return value of the syscall |
b0dd25a82 [PATCH] AUDIT: ke... |
1500 1501 |
* * Tear down after system call. If the audit context has been marked as |
1da177e4c Linux-2.6.12-rc2 |
1502 |
* auditable (either because of the AUDIT_RECORD_CONTEXT state from |
42ae610c1 kernel-doc: fix n... |
1503 |
* filtering, or because some other part of the kernel wrote an audit |
1da177e4c Linux-2.6.12-rc2 |
1504 |
* message), then write out the syscall information. In call cases, |
b0dd25a82 [PATCH] AUDIT: ke... |
1505 1506 |
* free the names stored from getname(). */ |
d7e7528bc Audit: push audit... |
1507 |
void __audit_syscall_exit(int success, long return_code) |
1da177e4c Linux-2.6.12-rc2 |
1508 |
{ |
5411be59d [PATCH] drop task... |
1509 |
struct task_struct *tsk = current; |
1da177e4c Linux-2.6.12-rc2 |
1510 |
struct audit_context *context; |
d7e7528bc Audit: push audit... |
1511 1512 1513 1514 |
if (success) success = AUDITSC_SUCCESS; else success = AUDITSC_FAILURE; |
1da177e4c Linux-2.6.12-rc2 |
1515 |
|
4a3eb726d audit: rename the... |
1516 |
context = audit_take_context(tsk, success, return_code); |
56179a6ec audit: drop some ... |
1517 |
if (!context) |
97e94c453 [PATCH] no need t... |
1518 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1519 |
|
0590b9335 fixing audit rule... |
1520 |
if (context->in_syscall && context->current_state == AUDIT_RECORD_CONTEXT) |
e495149b1 [PATCH] drop gfp_... |
1521 |
audit_log_exit(context, tsk); |
1da177e4c Linux-2.6.12-rc2 |
1522 1523 |
context->in_syscall = 0; |
0590b9335 fixing audit rule... |
1524 |
context->prio = context->state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0; |
2fd6f58ba [AUDIT] Don't all... |
1525 |
|
916d75761 Fix rule eviction... |
1526 1527 |
if (!list_empty(&context->killed_trees)) audit_kill_trees(&context->killed_trees); |
c62d773a3 audit: no nested ... |
1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 |
audit_free_names(context); unroll_tree_refs(context, NULL, 0); audit_free_aux(context); context->aux = NULL; context->aux_pids = NULL; context->target_pid = 0; context->target_sid = 0; context->sockaddr_len = 0; context->type = 0; context->fds[0] = -1; if (context->state != AUDIT_RECORD_CONTEXT) { kfree(context->filterkey); context->filterkey = NULL; |
1da177e4c Linux-2.6.12-rc2 |
1541 |
} |
c62d773a3 audit: no nested ... |
1542 |
tsk->audit_context = context; |
1da177e4c Linux-2.6.12-rc2 |
1543 |
} |
74c3cbe33 [PATCH] audit: wa... |
1544 1545 1546 1547 1548 1549 1550 |
static inline void handle_one(const struct inode *inode) { #ifdef CONFIG_AUDIT_TREE struct audit_context *context; struct audit_tree_refs *p; struct audit_chunk *chunk; int count; |
08991e83b fsnotify: Free fs... |
1551 |
if (likely(!inode->i_fsnotify_marks)) |
74c3cbe33 [PATCH] audit: wa... |
1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 |
return; context = current->audit_context; p = context->trees; count = context->tree_count; rcu_read_lock(); chunk = audit_tree_lookup(inode); rcu_read_unlock(); if (!chunk) return; if (likely(put_tree_ref(context, chunk))) return; if (unlikely(!grow_tree_refs(context))) { |
f952d10ff audit: Use more c... |
1564 1565 |
pr_warn("out of memory, audit has lost a tree reference "); |
74c3cbe33 [PATCH] audit: wa... |
1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 |
audit_set_auditable(context); audit_put_chunk(chunk); unroll_tree_refs(context, p, count); return; } put_tree_ref(context, chunk); #endif } static void handle_path(const struct dentry *dentry) { #ifdef CONFIG_AUDIT_TREE struct audit_context *context; struct audit_tree_refs *p; const struct dentry *d, *parent; struct audit_chunk *drop; unsigned long seq; int count; context = current->audit_context; p = context->trees; count = context->tree_count; retry: drop = NULL; d = dentry; rcu_read_lock(); seq = read_seqbegin(&rename_lock); for(;;) { |
3b362157b VFS: audit: d_bac... |
1594 |
struct inode *inode = d_backing_inode(d); |
08991e83b fsnotify: Free fs... |
1595 |
if (inode && unlikely(inode->i_fsnotify_marks)) { |
74c3cbe33 [PATCH] audit: wa... |
1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 |
struct audit_chunk *chunk; chunk = audit_tree_lookup(inode); if (chunk) { if (unlikely(!put_tree_ref(context, chunk))) { drop = chunk; break; } } } parent = d->d_parent; if (parent == d) break; d = parent; } if (unlikely(read_seqretry(&rename_lock, seq) || drop)) { /* in this order */ rcu_read_unlock(); if (!drop) { /* just a race with rename */ unroll_tree_refs(context, p, count); goto retry; } audit_put_chunk(drop); if (grow_tree_refs(context)) { /* OK, got more space */ unroll_tree_refs(context, p, count); goto retry; } /* too bad */ |
f952d10ff audit: Use more c... |
1624 1625 |
pr_warn("out of memory, audit has lost a tree reference "); |
74c3cbe33 [PATCH] audit: wa... |
1626 1627 1628 1629 1630 1631 1632 |
unroll_tree_refs(context, p, count); audit_set_auditable(context); return; } rcu_read_unlock(); #endif } |
78e2e802a audit: add a new ... |
1633 1634 |
static struct audit_names *audit_alloc_name(struct audit_context *context, unsigned char type) |
5195d8e21 audit: dynamicall... |
1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 |
{ struct audit_names *aname; if (context->name_count < AUDIT_NAMES) { aname = &context->preallocated_names[context->name_count]; memset(aname, 0, sizeof(*aname)); } else { aname = kzalloc(sizeof(*aname), GFP_NOFS); if (!aname) return NULL; aname->should_free = true; } |
84cb777e6 audit: use macros... |
1647 |
aname->ino = AUDIT_INO_UNSET; |
78e2e802a audit: add a new ... |
1648 |
aname->type = type; |
5195d8e21 audit: dynamicall... |
1649 1650 1651 |
list_add_tail(&aname->list, &context->names_list); context->name_count++; |
5195d8e21 audit: dynamicall... |
1652 1653 |
return aname; } |
b0dd25a82 [PATCH] AUDIT: ke... |
1654 |
/** |
196a50855 audit: update the... |
1655 |
* __audit_reusename - fill out filename with info from existing entry |
7ac86265d audit: allow audi... |
1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 |
* @uptr: userland ptr to pathname * * Search the audit_names list for the current audit context. If there is an * existing entry with a matching "uptr" then return the filename * associated with that audit_name. If not, return NULL. */ struct filename * __audit_reusename(const __user char *uptr) { struct audit_context *context = current->audit_context; struct audit_names *n; list_for_each_entry(n, &context->names_list, list) { if (!n->name) continue; |
55422d0bd audit: replace ge... |
1671 1672 |
if (n->name->uptr == uptr) { n->name->refcnt++; |
7ac86265d audit: allow audi... |
1673 |
return n->name; |
55422d0bd audit: replace ge... |
1674 |
} |
7ac86265d audit: allow audi... |
1675 1676 1677 1678 1679 |
} return NULL; } /** |
196a50855 audit: update the... |
1680 |
* __audit_getname - add a name to the list |
b0dd25a82 [PATCH] AUDIT: ke... |
1681 1682 1683 1684 1685 |
* @name: name to add * * Add a name to the list of audit names for this context. * Called from fs/namei.c:getname(). */ |
91a27b2a7 vfs: define struc... |
1686 |
void __audit_getname(struct filename *name) |
1da177e4c Linux-2.6.12-rc2 |
1687 1688 |
{ struct audit_context *context = current->audit_context; |
5195d8e21 audit: dynamicall... |
1689 |
struct audit_names *n; |
1da177e4c Linux-2.6.12-rc2 |
1690 |
|
55422d0bd audit: replace ge... |
1691 |
if (!context->in_syscall) |
1da177e4c Linux-2.6.12-rc2 |
1692 |
return; |
91a27b2a7 vfs: define struc... |
1693 |
|
78e2e802a audit: add a new ... |
1694 |
n = audit_alloc_name(context, AUDIT_TYPE_UNKNOWN); |
5195d8e21 audit: dynamicall... |
1695 1696 1697 1698 1699 |
if (!n) return; n->name = name; n->name_len = AUDIT_NAME_FULL; |
adb5c2473 audit: make audit... |
1700 |
name->aname = n; |
55422d0bd audit: replace ge... |
1701 |
name->refcnt++; |
5195d8e21 audit: dynamicall... |
1702 |
|
f7ad3c6be vfs: add helpers ... |
1703 1704 |
if (!context->pwd.dentry) get_fs_pwd(current->fs, &context->pwd); |
1da177e4c Linux-2.6.12-rc2 |
1705 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
1706 |
/** |
bfcec7087 audit: set the na... |
1707 |
* __audit_inode - store the inode and device from a lookup |
b0dd25a82 [PATCH] AUDIT: ke... |
1708 |
* @name: name being audited |
481968f44 auditsc: fix kern... |
1709 |
* @dentry: dentry being audited |
79f6530cb audit: fix mq_ope... |
1710 |
* @flags: attributes for this particular entry |
b0dd25a82 [PATCH] AUDIT: ke... |
1711 |
*/ |
adb5c2473 audit: make audit... |
1712 |
void __audit_inode(struct filename *name, const struct dentry *dentry, |
79f6530cb audit: fix mq_ope... |
1713 |
unsigned int flags) |
1da177e4c Linux-2.6.12-rc2 |
1714 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1715 |
struct audit_context *context = current->audit_context; |
d6335d77a security: Make in... |
1716 |
struct inode *inode = d_backing_inode(dentry); |
5195d8e21 audit: dynamicall... |
1717 |
struct audit_names *n; |
79f6530cb audit: fix mq_ope... |
1718 |
bool parent = flags & AUDIT_INODE_PARENT; |
1da177e4c Linux-2.6.12-rc2 |
1719 1720 1721 |
if (!context->in_syscall) return; |
5195d8e21 audit: dynamicall... |
1722 |
|
9cec9d68a audit: no need to... |
1723 1724 |
if (!name) goto out_alloc; |
adb5c2473 audit: make audit... |
1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 |
/* * If we have a pointer to an audit_names entry already, then we can * just use it directly if the type is correct. */ n = name->aname; if (n) { if (parent) { if (n->type == AUDIT_TYPE_PARENT || n->type == AUDIT_TYPE_UNKNOWN) goto out; } else { if (n->type != AUDIT_TYPE_PARENT) goto out; } } |
5195d8e21 audit: dynamicall... |
1740 |
list_for_each_entry_reverse(n, &context->names_list, list) { |
57c59f583 audit: fix filena... |
1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 |
if (n->ino) { /* valid inode number, use that for the comparison */ if (n->ino != inode->i_ino || n->dev != inode->i_sb->s_dev) continue; } else if (n->name) { /* inode number has not been set, check the name */ if (strcmp(n->name->name, name->name)) continue; } else /* no inode and no name (?!) ... this is odd ... */ |
bfcec7087 audit: set the na... |
1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 |
continue; /* match the correct record type */ if (parent) { if (n->type == AUDIT_TYPE_PARENT || n->type == AUDIT_TYPE_UNKNOWN) goto out; } else { if (n->type != AUDIT_TYPE_PARENT) goto out; } |
1da177e4c Linux-2.6.12-rc2 |
1763 |
} |
5195d8e21 audit: dynamicall... |
1764 |
|
9cec9d68a audit: no need to... |
1765 |
out_alloc: |
4a9284360 audit: correctly ... |
1766 1767 |
/* unable to find an entry with both a matching name and type */ n = audit_alloc_name(context, AUDIT_TYPE_UNKNOWN); |
5195d8e21 audit: dynamicall... |
1768 1769 |
if (!n) return; |
fcf22d826 audit: create pri... |
1770 |
if (name) { |
fd3522fdc audit: enable fil... |
1771 |
n->name = name; |
55422d0bd audit: replace ge... |
1772 |
name->refcnt++; |
fcf22d826 audit: create pri... |
1773 |
} |
4a9284360 audit: correctly ... |
1774 |
|
5195d8e21 audit: dynamicall... |
1775 |
out: |
bfcec7087 audit: set the na... |
1776 |
if (parent) { |
91a27b2a7 vfs: define struc... |
1777 |
n->name_len = n->name ? parent_len(n->name->name) : AUDIT_NAME_FULL; |
bfcec7087 audit: set the na... |
1778 |
n->type = AUDIT_TYPE_PARENT; |
79f6530cb audit: fix mq_ope... |
1779 1780 |
if (flags & AUDIT_INODE_HIDDEN) n->hidden = true; |
bfcec7087 audit: set the na... |
1781 1782 1783 1784 |
} else { n->name_len = AUDIT_NAME_FULL; n->type = AUDIT_TYPE_NORMAL; } |
74c3cbe33 [PATCH] audit: wa... |
1785 |
handle_path(dentry); |
5195d8e21 audit: dynamicall... |
1786 |
audit_copy_inode(n, dentry, inode); |
73241ccca [PATCH] Collect m... |
1787 |
} |
9f45f5bf3 new helper: audit... |
1788 1789 1790 1791 |
void __audit_file(const struct file *file) { __audit_inode(NULL, file->f_path.dentry, 0); } |
73241ccca [PATCH] Collect m... |
1792 |
/** |
c43a25abb audit: reverse ar... |
1793 |
* __audit_inode_child - collect inode info for created/removed objects |
73d3ec5ab [PATCH] fix misse... |
1794 |
* @parent: inode of dentry parent |
c43a25abb audit: reverse ar... |
1795 |
* @dentry: dentry being audited |
4fa6b5ecb audit: overhaul _... |
1796 |
* @type: AUDIT_TYPE_* value that we're looking for |
73241ccca [PATCH] Collect m... |
1797 1798 1799 1800 1801 1802 1803 1804 1805 |
* * For syscalls that create or remove filesystem objects, audit_inode * can only collect information for the filesystem object's parent. * This call updates the audit context with the child's information. * Syscalls that create a new filesystem object must be hooked after * the object is created. Syscalls that remove a filesystem object * must be hooked prior, in order to capture the target inode during * unsuccessful attempts. */ |
d6335d77a security: Make in... |
1806 |
void __audit_inode_child(struct inode *parent, |
4fa6b5ecb audit: overhaul _... |
1807 1808 |
const struct dentry *dentry, const unsigned char type) |
73241ccca [PATCH] Collect m... |
1809 |
{ |
73241ccca [PATCH] Collect m... |
1810 |
struct audit_context *context = current->audit_context; |
d6335d77a security: Make in... |
1811 |
struct inode *inode = d_backing_inode(dentry); |
cccc6bba3 Lose the first ar... |
1812 |
const char *dname = dentry->d_name.name; |
4fa6b5ecb audit: overhaul _... |
1813 |
struct audit_names *n, *found_parent = NULL, *found_child = NULL; |
73241ccca [PATCH] Collect m... |
1814 1815 1816 |
if (!context->in_syscall) return; |
74c3cbe33 [PATCH] audit: wa... |
1817 1818 |
if (inode) handle_one(inode); |
73241ccca [PATCH] Collect m... |
1819 |
|
4fa6b5ecb audit: overhaul _... |
1820 |
/* look for a parent entry first */ |
5195d8e21 audit: dynamicall... |
1821 |
list_for_each_entry(n, &context->names_list, list) { |
57c59f583 audit: fix filena... |
1822 1823 1824 |
if (!n->name || (n->type != AUDIT_TYPE_PARENT && n->type != AUDIT_TYPE_UNKNOWN)) |
5712e88f2 [PATCH] match aud... |
1825 |
continue; |
57c59f583 audit: fix filena... |
1826 1827 1828 1829 1830 |
if (n->ino == parent->i_ino && n->dev == parent->i_sb->s_dev && !audit_compare_dname_path(dname, n->name->name, n->name_len)) { if (n->type == AUDIT_TYPE_UNKNOWN) n->type = AUDIT_TYPE_PARENT; |
4fa6b5ecb audit: overhaul _... |
1831 1832 |
found_parent = n; break; |
f368c07d7 [PATCH] audit: pa... |
1833 |
} |
5712e88f2 [PATCH] match aud... |
1834 |
} |
73241ccca [PATCH] Collect m... |
1835 |
|
4fa6b5ecb audit: overhaul _... |
1836 |
/* is there a matching child entry? */ |
5195d8e21 audit: dynamicall... |
1837 |
list_for_each_entry(n, &context->names_list, list) { |
4fa6b5ecb audit: overhaul _... |
1838 |
/* can only match entries that have a name */ |
57c59f583 audit: fix filena... |
1839 1840 |
if (!n->name || (n->type != type && n->type != AUDIT_TYPE_UNKNOWN)) |
5712e88f2 [PATCH] match aud... |
1841 |
continue; |
91a27b2a7 vfs: define struc... |
1842 1843 |
if (!strcmp(dname, n->name->name) || !audit_compare_dname_path(dname, n->name->name, |
4fa6b5ecb audit: overhaul _... |
1844 1845 |
found_parent ? found_parent->name_len : |
e3d6b07b8 audit: optimize a... |
1846 |
AUDIT_NAME_FULL)) { |
57c59f583 audit: fix filena... |
1847 1848 |
if (n->type == AUDIT_TYPE_UNKNOWN) n->type = type; |
4fa6b5ecb audit: overhaul _... |
1849 1850 |
found_child = n; break; |
5712e88f2 [PATCH] match aud... |
1851 |
} |
ac9910ce0 [PATCH] name_coun... |
1852 |
} |
5712e88f2 [PATCH] match aud... |
1853 |
|
5712e88f2 [PATCH] match aud... |
1854 |
if (!found_parent) { |
4fa6b5ecb audit: overhaul _... |
1855 1856 |
/* create a new, "anonymous" parent record */ n = audit_alloc_name(context, AUDIT_TYPE_PARENT); |
5195d8e21 audit: dynamicall... |
1857 |
if (!n) |
ac9910ce0 [PATCH] name_coun... |
1858 |
return; |
5195d8e21 audit: dynamicall... |
1859 |
audit_copy_inode(n, NULL, parent); |
73d3ec5ab [PATCH] fix misse... |
1860 |
} |
5712e88f2 [PATCH] match aud... |
1861 1862 |
if (!found_child) { |
4fa6b5ecb audit: overhaul _... |
1863 1864 |
found_child = audit_alloc_name(context, type); if (!found_child) |
5712e88f2 [PATCH] match aud... |
1865 |
return; |
5712e88f2 [PATCH] match aud... |
1866 1867 1868 1869 1870 |
/* Re-use the name belonging to the slot for a matching parent * directory. All names for this context are relinquished in * audit_free_names() */ if (found_parent) { |
4fa6b5ecb audit: overhaul _... |
1871 1872 |
found_child->name = found_parent->name; found_child->name_len = AUDIT_NAME_FULL; |
55422d0bd audit: replace ge... |
1873 |
found_child->name->refcnt++; |
5712e88f2 [PATCH] match aud... |
1874 |
} |
5712e88f2 [PATCH] match aud... |
1875 |
} |
57c59f583 audit: fix filena... |
1876 |
|
4fa6b5ecb audit: overhaul _... |
1877 1878 1879 |
if (inode) audit_copy_inode(found_child, dentry, inode); else |
84cb777e6 audit: use macros... |
1880 |
found_child->ino = AUDIT_INO_UNSET; |
3e2efce06 [PATCH] fix fault... |
1881 |
} |
50e437d52 SUNRPC: Convert r... |
1882 |
EXPORT_SYMBOL_GPL(__audit_inode_child); |
3e2efce06 [PATCH] fix fault... |
1883 1884 |
/** |
b0dd25a82 [PATCH] AUDIT: ke... |
1885 1886 |
* auditsc_get_stamp - get local copies of audit_context values * @ctx: audit_context for the task |
2115bb250 audit: Use timesp... |
1887 |
* @t: timespec64 to store time recorded in the audit_context |
b0dd25a82 [PATCH] AUDIT: ke... |
1888 1889 1890 1891 |
* @serial: serial value that is recorded in the audit_context * * Also sets the context as auditable. */ |
48887e63d [PATCH] fix broke... |
1892 |
int auditsc_get_stamp(struct audit_context *ctx, |
2115bb250 audit: Use timesp... |
1893 |
struct timespec64 *t, unsigned int *serial) |
1da177e4c Linux-2.6.12-rc2 |
1894 |
{ |
48887e63d [PATCH] fix broke... |
1895 1896 |
if (!ctx->in_syscall) return 0; |
ce625a801 AUDIT: Reduce con... |
1897 1898 |
if (!ctx->serial) ctx->serial = audit_serial(); |
bfb4496e7 AUDIT: Assign ser... |
1899 1900 1901 |
t->tv_sec = ctx->ctime.tv_sec; t->tv_nsec = ctx->ctime.tv_nsec; *serial = ctx->serial; |
0590b9335 fixing audit rule... |
1902 1903 1904 1905 |
if (!ctx->prio) { ctx->prio = 1; ctx->current_state = AUDIT_RECORD_CONTEXT; } |
48887e63d [PATCH] fix broke... |
1906 |
return 1; |
1da177e4c Linux-2.6.12-rc2 |
1907 |
} |
4746ec5b0 [AUDIT] add sessi... |
1908 1909 |
/* global counter which is incremented every time something logs in */ static atomic_t session_id = ATOMIC_INIT(0); |
da0a61049 audit: loginuid f... |
1910 1911 |
static int audit_set_loginuid_perm(kuid_t loginuid) { |
da0a61049 audit: loginuid f... |
1912 1913 1914 |
/* if we are unset, we don't need privs */ if (!audit_loginuid_set(current)) return 0; |
21b85c31d audit: audit feat... |
1915 1916 1917 |
/* if AUDIT_FEATURE_LOGINUID_IMMUTABLE means never ever allow a change*/ if (is_audit_feature_set(AUDIT_FEATURE_LOGINUID_IMMUTABLE)) return -EPERM; |
83fa6bbe4 audit: remove CON... |
1918 1919 1920 |
/* it is set, you need permission */ if (!capable(CAP_AUDIT_CONTROL)) return -EPERM; |
d040e5af3 audit: audit feat... |
1921 1922 1923 |
/* reject if this is not an unset and we don't allow that */ if (is_audit_feature_set(AUDIT_FEATURE_ONLY_UNSET_LOGINUID) && uid_valid(loginuid)) return -EPERM; |
83fa6bbe4 audit: remove CON... |
1924 |
return 0; |
da0a61049 audit: loginuid f... |
1925 1926 1927 1928 1929 1930 1931 |
} static void audit_log_set_loginuid(kuid_t koldloginuid, kuid_t kloginuid, unsigned int oldsessionid, unsigned int sessionid, int rc) { struct audit_buffer *ab; |
5ee9a75c9 audit: fix dangli... |
1932 |
uid_t uid, oldloginuid, loginuid; |
db0a6fb5d audit: add tty fi... |
1933 |
struct tty_struct *tty; |
da0a61049 audit: loginuid f... |
1934 |
|
c2412d91c audit: don't gene... |
1935 1936 |
if (!audit_enabled) return; |
76a658c20 audit: move calcs... |
1937 1938 1939 |
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_LOGIN); if (!ab) return; |
da0a61049 audit: loginuid f... |
1940 |
uid = from_kuid(&init_user_ns, task_uid(current)); |
5ee9a75c9 audit: fix dangli... |
1941 1942 |
oldloginuid = from_kuid(&init_user_ns, koldloginuid); loginuid = from_kuid(&init_user_ns, kloginuid), |
db0a6fb5d audit: add tty fi... |
1943 |
tty = audit_get_tty(current); |
da0a61049 audit: loginuid f... |
1944 |
|
fa2bea2f5 audit: consistent... |
1945 |
audit_log_format(ab, "pid=%d uid=%u", task_tgid_nr(current), uid); |
ddfad8aff audit: include su... |
1946 |
audit_log_task_context(ab); |
db0a6fb5d audit: add tty fi... |
1947 1948 1949 1950 |
audit_log_format(ab, " old-auid=%u auid=%u tty=%s old-ses=%u ses=%u res=%d", oldloginuid, loginuid, tty ? tty_name(tty) : "(none)", oldsessionid, sessionid, !rc); audit_put_tty(tty); |
da0a61049 audit: loginuid f... |
1951 1952 |
audit_log_end(ab); } |
b0dd25a82 [PATCH] AUDIT: ke... |
1953 |
/** |
0a300be6d audit: remove tas... |
1954 |
* audit_set_loginuid - set current task's audit_context loginuid |
b0dd25a82 [PATCH] AUDIT: ke... |
1955 1956 1957 1958 1959 1960 |
* @loginuid: loginuid value * * Returns 0. * * Called (set) from fs/proc/base.c::proc_loginuid_write(). */ |
e1760bd5f userns: Convert t... |
1961 |
int audit_set_loginuid(kuid_t loginuid) |
1da177e4c Linux-2.6.12-rc2 |
1962 |
{ |
0a300be6d audit: remove tas... |
1963 |
struct task_struct *task = current; |
9175c9d2a audit: fix type o... |
1964 1965 |
unsigned int oldsessionid, sessionid = (unsigned int)-1; kuid_t oldloginuid; |
da0a61049 audit: loginuid f... |
1966 |
int rc; |
41757106b [PATCH] make set_... |
1967 |
|
da0a61049 audit: loginuid f... |
1968 1969 1970 1971 1972 1973 |
oldloginuid = audit_get_loginuid(current); oldsessionid = audit_get_sessionid(current); rc = audit_set_loginuid_perm(loginuid); if (rc) goto out; |
633b45454 audit: only allow... |
1974 |
|
81407c84a audit: allow unse... |
1975 |
/* are we setting or clearing? */ |
833fc48d1 audit: skip sessi... |
1976 |
if (uid_valid(loginuid)) { |
4440e8548 audit: convert al... |
1977 |
sessionid = (unsigned int)atomic_inc_return(&session_id); |
833fc48d1 audit: skip sessi... |
1978 1979 1980 |
if (unlikely(sessionid == (unsigned int)-1)) sessionid = (unsigned int)atomic_inc_return(&session_id); } |
bfef93a5d [PATCH] get rid o... |
1981 |
|
4746ec5b0 [AUDIT] add sessi... |
1982 |
task->sessionid = sessionid; |
bfef93a5d [PATCH] get rid o... |
1983 |
task->loginuid = loginuid; |
da0a61049 audit: loginuid f... |
1984 1985 1986 |
out: audit_log_set_loginuid(oldloginuid, loginuid, oldsessionid, sessionid, rc); return rc; |
1da177e4c Linux-2.6.12-rc2 |
1987 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
1988 |
/** |
20ca73bc7 [PATCH] Audit of ... |
1989 1990 1991 |
* __audit_mq_open - record audit data for a POSIX MQ open * @oflag: open flag * @mode: mode bits |
6b9625599 auditsc: fix kern... |
1992 |
* @attr: queue attributes |
20ca73bc7 [PATCH] Audit of ... |
1993 |
* |
20ca73bc7 [PATCH] Audit of ... |
1994 |
*/ |
df0a42837 switch mq_open() ... |
1995 |
void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr) |
20ca73bc7 [PATCH] Audit of ... |
1996 |
{ |
20ca73bc7 [PATCH] Audit of ... |
1997 |
struct audit_context *context = current->audit_context; |
564f6993f sanitize audit_mq... |
1998 1999 2000 2001 |
if (attr) memcpy(&context->mq_open.attr, attr, sizeof(struct mq_attr)); else memset(&context->mq_open.attr, 0, sizeof(struct mq_attr)); |
20ca73bc7 [PATCH] Audit of ... |
2002 |
|
564f6993f sanitize audit_mq... |
2003 2004 |
context->mq_open.oflag = oflag; context->mq_open.mode = mode; |
20ca73bc7 [PATCH] Audit of ... |
2005 |
|
564f6993f sanitize audit_mq... |
2006 |
context->type = AUDIT_MQ_OPEN; |
20ca73bc7 [PATCH] Audit of ... |
2007 2008 2009 |
} /** |
c32c8af43 sanitize AUDIT_MQ... |
2010 |
* __audit_mq_sendrecv - record audit data for a POSIX MQ timed send/receive |
20ca73bc7 [PATCH] Audit of ... |
2011 2012 2013 |
* @mqdes: MQ descriptor * @msg_len: Message length * @msg_prio: Message priority |
c32c8af43 sanitize AUDIT_MQ... |
2014 |
* @abs_timeout: Message timeout in absolute time |
20ca73bc7 [PATCH] Audit of ... |
2015 |
* |
20ca73bc7 [PATCH] Audit of ... |
2016 |
*/ |
c32c8af43 sanitize AUDIT_MQ... |
2017 |
void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, |
b90477263 ipc: mqueue: Repl... |
2018 |
const struct timespec64 *abs_timeout) |
20ca73bc7 [PATCH] Audit of ... |
2019 |
{ |
20ca73bc7 [PATCH] Audit of ... |
2020 |
struct audit_context *context = current->audit_context; |
b90477263 ipc: mqueue: Repl... |
2021 |
struct timespec64 *p = &context->mq_sendrecv.abs_timeout; |
20ca73bc7 [PATCH] Audit of ... |
2022 |
|
c32c8af43 sanitize AUDIT_MQ... |
2023 |
if (abs_timeout) |
b90477263 ipc: mqueue: Repl... |
2024 |
memcpy(p, abs_timeout, sizeof(*p)); |
c32c8af43 sanitize AUDIT_MQ... |
2025 |
else |
b90477263 ipc: mqueue: Repl... |
2026 |
memset(p, 0, sizeof(*p)); |
20ca73bc7 [PATCH] Audit of ... |
2027 |
|
c32c8af43 sanitize AUDIT_MQ... |
2028 2029 2030 |
context->mq_sendrecv.mqdes = mqdes; context->mq_sendrecv.msg_len = msg_len; context->mq_sendrecv.msg_prio = msg_prio; |
20ca73bc7 [PATCH] Audit of ... |
2031 |
|
c32c8af43 sanitize AUDIT_MQ... |
2032 |
context->type = AUDIT_MQ_SENDRECV; |
20ca73bc7 [PATCH] Audit of ... |
2033 2034 2035 2036 2037 |
} /** * __audit_mq_notify - record audit data for a POSIX MQ notify * @mqdes: MQ descriptor |
6b9625599 auditsc: fix kern... |
2038 |
* @notification: Notification event |
20ca73bc7 [PATCH] Audit of ... |
2039 |
* |
20ca73bc7 [PATCH] Audit of ... |
2040 |
*/ |
20114f71b sanitize audit_mq... |
2041 |
void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification) |
20ca73bc7 [PATCH] Audit of ... |
2042 |
{ |
20ca73bc7 [PATCH] Audit of ... |
2043 |
struct audit_context *context = current->audit_context; |
20114f71b sanitize audit_mq... |
2044 2045 2046 2047 |
if (notification) context->mq_notify.sigev_signo = notification->sigev_signo; else context->mq_notify.sigev_signo = 0; |
20ca73bc7 [PATCH] Audit of ... |
2048 |
|
20114f71b sanitize audit_mq... |
2049 2050 |
context->mq_notify.mqdes = mqdes; context->type = AUDIT_MQ_NOTIFY; |
20ca73bc7 [PATCH] Audit of ... |
2051 2052 2053 2054 2055 2056 2057 |
} /** * __audit_mq_getsetattr - record audit data for a POSIX MQ get/set attribute * @mqdes: MQ descriptor * @mqstat: MQ flags * |
20ca73bc7 [PATCH] Audit of ... |
2058 |
*/ |
7392906ea sanitize audit_mq... |
2059 |
void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat) |
20ca73bc7 [PATCH] Audit of ... |
2060 |
{ |
20ca73bc7 [PATCH] Audit of ... |
2061 |
struct audit_context *context = current->audit_context; |
7392906ea sanitize audit_mq... |
2062 2063 2064 |
context->mq_getsetattr.mqdes = mqdes; context->mq_getsetattr.mqstat = *mqstat; context->type = AUDIT_MQ_GETSETATTR; |
20ca73bc7 [PATCH] Audit of ... |
2065 2066 2067 |
} /** |
196a50855 audit: update the... |
2068 |
* __audit_ipc_obj - record audit data for ipc object |
073115d6b [PATCH] Rework of... |
2069 2070 |
* @ipcp: ipc permissions * |
073115d6b [PATCH] Rework of... |
2071 |
*/ |
a33e67510 sanitize audit_ip... |
2072 |
void __audit_ipc_obj(struct kern_ipc_perm *ipcp) |
073115d6b [PATCH] Rework of... |
2073 |
{ |
073115d6b [PATCH] Rework of... |
2074 |
struct audit_context *context = current->audit_context; |
a33e67510 sanitize audit_ip... |
2075 2076 2077 |
context->ipc.uid = ipcp->uid; context->ipc.gid = ipcp->gid; context->ipc.mode = ipcp->mode; |
e816f370c sanitize audit_ip... |
2078 |
context->ipc.has_perm = 0; |
a33e67510 sanitize audit_ip... |
2079 2080 |
security_ipc_getsecid(ipcp, &context->ipc.osid); context->type = AUDIT_IPC; |
073115d6b [PATCH] Rework of... |
2081 2082 2083 |
} /** |
196a50855 audit: update the... |
2084 |
* __audit_ipc_set_perm - record audit data for new ipc permissions |
b0dd25a82 [PATCH] AUDIT: ke... |
2085 2086 2087 2088 2089 |
* @qbytes: msgq bytes * @uid: msgq user id * @gid: msgq group id * @mode: msgq mode (permissions) * |
e816f370c sanitize audit_ip... |
2090 |
* Called only after audit_ipc_obj(). |
b0dd25a82 [PATCH] AUDIT: ke... |
2091 |
*/ |
2570ebbd1 switch kern_ipc_p... |
2092 |
void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
2093 |
{ |
1da177e4c Linux-2.6.12-rc2 |
2094 |
struct audit_context *context = current->audit_context; |
e816f370c sanitize audit_ip... |
2095 2096 2097 2098 2099 |
context->ipc.qbytes = qbytes; context->ipc.perm_uid = uid; context->ipc.perm_gid = gid; context->ipc.perm_mode = mode; context->ipc.has_perm = 1; |
1da177e4c Linux-2.6.12-rc2 |
2100 |
} |
c2f0c7c35 The attached patc... |
2101 |
|
d9cfea91e audit: move audit... |
2102 |
void __audit_bprm(struct linux_binprm *bprm) |
473ae30bc [PATCH] execve ar... |
2103 |
{ |
473ae30bc [PATCH] execve ar... |
2104 |
struct audit_context *context = current->audit_context; |
473ae30bc [PATCH] execve ar... |
2105 |
|
d9cfea91e audit: move audit... |
2106 2107 |
context->type = AUDIT_EXECVE; context->execve.argc = bprm->argc; |
473ae30bc [PATCH] execve ar... |
2108 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2109 |
/** |
196a50855 audit: update the... |
2110 |
* __audit_socketcall - record audit data for sys_socketcall |
2950fa9d3 kernel: audit: be... |
2111 |
* @nargs: number of args, which should not be more than AUDITSC_ARGS. |
b0dd25a82 [PATCH] AUDIT: ke... |
2112 2113 |
* @args: args array * |
b0dd25a82 [PATCH] AUDIT: ke... |
2114 |
*/ |
2950fa9d3 kernel: audit: be... |
2115 |
int __audit_socketcall(int nargs, unsigned long *args) |
3ec3b2fba AUDIT: Capture sy... |
2116 |
{ |
3ec3b2fba AUDIT: Capture sy... |
2117 |
struct audit_context *context = current->audit_context; |
2950fa9d3 kernel: audit: be... |
2118 2119 |
if (nargs <= 0 || nargs > AUDITSC_ARGS || !args) return -EINVAL; |
f3298dc4f sanitize audit_so... |
2120 2121 2122 |
context->type = AUDIT_SOCKETCALL; context->socketcall.nargs = nargs; memcpy(context->socketcall.args, args, nargs * sizeof(unsigned long)); |
2950fa9d3 kernel: audit: be... |
2123 |
return 0; |
3ec3b2fba AUDIT: Capture sy... |
2124 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2125 |
/** |
db3495099 [PATCH] AUDIT_FD_... |
2126 2127 2128 2129 |
* __audit_fd_pair - record audit data for pipe and socketpair * @fd1: the first file descriptor * @fd2: the second file descriptor * |
db3495099 [PATCH] AUDIT_FD_... |
2130 |
*/ |
157cf649a sanitize audit_fd... |
2131 |
void __audit_fd_pair(int fd1, int fd2) |
db3495099 [PATCH] AUDIT_FD_... |
2132 2133 |
{ struct audit_context *context = current->audit_context; |
157cf649a sanitize audit_fd... |
2134 2135 |
context->fds[0] = fd1; context->fds[1] = fd2; |
db3495099 [PATCH] AUDIT_FD_... |
2136 2137 2138 |
} /** |
196a50855 audit: update the... |
2139 |
* __audit_sockaddr - record audit data for sys_bind, sys_connect, sys_sendto |
b0dd25a82 [PATCH] AUDIT: ke... |
2140 2141 2142 2143 2144 |
* @len: data length in user space * @a: data address in kernel space * * Returns 0 for success or NULL context or < 0 on error. */ |
07c494178 audit: inline che... |
2145 |
int __audit_sockaddr(int len, void *a) |
3ec3b2fba AUDIT: Capture sy... |
2146 |
{ |
3ec3b2fba AUDIT: Capture sy... |
2147 |
struct audit_context *context = current->audit_context; |
4f6b434fe don't reallocate ... |
2148 2149 2150 2151 2152 2153 |
if (!context->sockaddr) { void *p = kmalloc(sizeof(struct sockaddr_storage), GFP_KERNEL); if (!p) return -ENOMEM; context->sockaddr = p; } |
3ec3b2fba AUDIT: Capture sy... |
2154 |
|
4f6b434fe don't reallocate ... |
2155 2156 |
context->sockaddr_len = len; memcpy(context->sockaddr, a, len); |
3ec3b2fba AUDIT: Capture sy... |
2157 2158 |
return 0; } |
a5cb013da [PATCH] auditing ... |
2159 2160 2161 |
void __audit_ptrace(struct task_struct *t) { struct audit_context *context = current->audit_context; |
fa2bea2f5 audit: consistent... |
2162 |
context->target_pid = task_tgid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2163 |
context->target_auid = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2164 |
context->target_uid = task_uid(t); |
4746ec5b0 [AUDIT] add sessi... |
2165 |
context->target_sessionid = audit_get_sessionid(t); |
2a862b32f Audit: use new LS... |
2166 |
security_task_getsecid(t, &context->target_sid); |
c2a7780ef [AUDIT] collect u... |
2167 |
memcpy(context->target_comm, t->comm, TASK_COMM_LEN); |
a5cb013da [PATCH] auditing ... |
2168 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2169 |
/** |
b0dd25a82 [PATCH] AUDIT: ke... |
2170 2171 2172 2173 2174 2175 2176 |
* audit_signal_info - record signal info for shutting down audit subsystem * @sig: signal value * @t: task being signaled * * If the audit subsystem is being terminated, record the task (pid) * and uid that is doing that. */ |
ab6434a13 audit: move audit... |
2177 |
int audit_signal_info(int sig, struct task_struct *t) |
c2f0c7c35 The attached patc... |
2178 |
{ |
e54dc2431 [PATCH] audit sig... |
2179 2180 2181 |
struct audit_aux_data_pids *axp; struct task_struct *tsk = current; struct audit_context *ctx = tsk->audit_context; |
cca080d9b userns: Convert a... |
2182 |
kuid_t uid = current_uid(), t_uid = task_uid(t); |
e1396065e [PATCH] collect s... |
2183 |
|
ab6434a13 audit: move audit... |
2184 2185 2186 2187 2188 2189 2190 2191 2192 |
if (auditd_test_task(t) && (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1 || sig == SIGUSR2)) { audit_sig_pid = task_tgid_nr(tsk); if (uid_valid(tsk->loginuid)) audit_sig_uid = tsk->loginuid; else audit_sig_uid = uid; security_task_getsecid(tsk, &audit_sig_sid); |
c2f0c7c35 The attached patc... |
2193 |
} |
e54dc2431 [PATCH] audit sig... |
2194 |
|
ab6434a13 audit: move audit... |
2195 2196 |
if (!audit_signals || audit_dummy_context()) return 0; |
e54dc2431 [PATCH] audit sig... |
2197 2198 2199 |
/* optimize the common case by putting first signal recipient directly * in audit_context */ if (!ctx->target_pid) { |
f1dc4867f audit: anchor all... |
2200 |
ctx->target_pid = task_tgid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2201 |
ctx->target_auid = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2202 |
ctx->target_uid = t_uid; |
4746ec5b0 [AUDIT] add sessi... |
2203 |
ctx->target_sessionid = audit_get_sessionid(t); |
2a862b32f Audit: use new LS... |
2204 |
security_task_getsecid(t, &ctx->target_sid); |
c2a7780ef [AUDIT] collect u... |
2205 |
memcpy(ctx->target_comm, t->comm, TASK_COMM_LEN); |
e54dc2431 [PATCH] audit sig... |
2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 |
return 0; } axp = (void *)ctx->aux_pids; if (!axp || axp->pid_count == AUDIT_AUX_PIDS) { axp = kzalloc(sizeof(*axp), GFP_ATOMIC); if (!axp) return -ENOMEM; axp->d.type = AUDIT_OBJ_PID; axp->d.next = ctx->aux_pids; ctx->aux_pids = (void *)axp; } |
88ae704c2 kernel/auditsc.c:... |
2219 |
BUG_ON(axp->pid_count >= AUDIT_AUX_PIDS); |
e54dc2431 [PATCH] audit sig... |
2220 |
|
f1dc4867f audit: anchor all... |
2221 |
axp->target_pid[axp->pid_count] = task_tgid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2222 |
axp->target_auid[axp->pid_count] = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2223 |
axp->target_uid[axp->pid_count] = t_uid; |
4746ec5b0 [AUDIT] add sessi... |
2224 |
axp->target_sessionid[axp->pid_count] = audit_get_sessionid(t); |
2a862b32f Audit: use new LS... |
2225 |
security_task_getsecid(t, &axp->target_sid[axp->pid_count]); |
c2a7780ef [AUDIT] collect u... |
2226 |
memcpy(axp->target_comm[axp->pid_count], t->comm, TASK_COMM_LEN); |
e54dc2431 [PATCH] audit sig... |
2227 2228 2229 |
axp->pid_count++; return 0; |
c2f0c7c35 The attached patc... |
2230 |
} |
0a4ff8c25 [PATCH] Abnormal ... |
2231 2232 |
/** |
3fc689e96 Any time fcaps or... |
2233 |
* __audit_log_bprm_fcaps - store information about a loading bprm and relevant fcaps |
d84f4f992 CRED: Inaugurate ... |
2234 2235 2236 |
* @bprm: pointer to the bprm being processed * @new: the proposed new credentials * @old: the old credentials |
3fc689e96 Any time fcaps or... |
2237 2238 2239 2240 |
* * Simply check if the proc already has the caps given by the file and if not * store the priv escalation info for later auditing at the end of the syscall * |
3fc689e96 Any time fcaps or... |
2241 2242 |
* -Eric */ |
d84f4f992 CRED: Inaugurate ... |
2243 2244 |
int __audit_log_bprm_fcaps(struct linux_binprm *bprm, const struct cred *new, const struct cred *old) |
3fc689e96 Any time fcaps or... |
2245 2246 2247 2248 |
{ struct audit_aux_data_bprm_fcaps *ax; struct audit_context *context = current->audit_context; struct cpu_vfs_cap_data vcaps; |
3fc689e96 Any time fcaps or... |
2249 2250 2251 |
ax = kmalloc(sizeof(*ax), GFP_KERNEL); if (!ax) |
d84f4f992 CRED: Inaugurate ... |
2252 |
return -ENOMEM; |
3fc689e96 Any time fcaps or... |
2253 2254 2255 2256 |
ax->d.type = AUDIT_BPRM_FCAPS; ax->d.next = context->aux; context->aux = (void *)ax; |
f4a4a8b12 file->f_path.dent... |
2257 |
get_vfs_caps_from_disk(bprm->file->f_path.dentry, &vcaps); |
3fc689e96 Any time fcaps or... |
2258 2259 2260 2261 2262 |
ax->fcap.permitted = vcaps.permitted; ax->fcap.inheritable = vcaps.inheritable; ax->fcap.fE = !!(vcaps.magic_etc & VFS_CAP_FLAGS_EFFECTIVE); ax->fcap_ver = (vcaps.magic_etc & VFS_CAP_REVISION_MASK) >> VFS_CAP_REVISION_SHIFT; |
d84f4f992 CRED: Inaugurate ... |
2263 2264 2265 |
ax->old_pcap.permitted = old->cap_permitted; ax->old_pcap.inheritable = old->cap_inheritable; ax->old_pcap.effective = old->cap_effective; |
7786f6b6d audit: add ambien... |
2266 |
ax->old_pcap.ambient = old->cap_ambient; |
3fc689e96 Any time fcaps or... |
2267 |
|
d84f4f992 CRED: Inaugurate ... |
2268 2269 2270 |
ax->new_pcap.permitted = new->cap_permitted; ax->new_pcap.inheritable = new->cap_inheritable; ax->new_pcap.effective = new->cap_effective; |
7786f6b6d audit: add ambien... |
2271 |
ax->new_pcap.ambient = new->cap_ambient; |
d84f4f992 CRED: Inaugurate ... |
2272 |
return 0; |
3fc689e96 Any time fcaps or... |
2273 2274 2275 |
} /** |
e68b75a02 When the capset s... |
2276 |
* __audit_log_capset - store information about the arguments to the capset syscall |
d84f4f992 CRED: Inaugurate ... |
2277 2278 |
* @new: the new credentials * @old: the old (current) credentials |
e68b75a02 When the capset s... |
2279 |
* |
da3dae54e Documentation: Do... |
2280 |
* Record the arguments userspace sent to sys_capset for later printing by the |
e68b75a02 When the capset s... |
2281 2282 |
* audit system if applicable */ |
ca24a23eb audit: Simplify a... |
2283 |
void __audit_log_capset(const struct cred *new, const struct cred *old) |
e68b75a02 When the capset s... |
2284 |
{ |
e68b75a02 When the capset s... |
2285 |
struct audit_context *context = current->audit_context; |
fa2bea2f5 audit: consistent... |
2286 |
context->capset.pid = task_tgid_nr(current); |
57f71a0af sanitize audit_lo... |
2287 2288 2289 |
context->capset.cap.effective = new->cap_effective; context->capset.cap.inheritable = new->cap_effective; context->capset.cap.permitted = new->cap_permitted; |
7786f6b6d audit: add ambien... |
2290 |
context->capset.cap.ambient = new->cap_ambient; |
57f71a0af sanitize audit_lo... |
2291 |
context->type = AUDIT_CAPSET; |
e68b75a02 When the capset s... |
2292 |
} |
120a795da audit mmap |
2293 2294 2295 2296 2297 2298 2299 |
void __audit_mmap_fd(int fd, int flags) { struct audit_context *context = current->audit_context; context->mmap.fd = fd; context->mmap.flags = flags; context->type = AUDIT_MMAP; } |
ca86cad73 audit: log module... |
2300 2301 2302 |
void __audit_log_kern_module(char *name) { struct audit_context *context = current->audit_context; |
a1b5bcffe audit: fix potent... |
2303 2304 2305 |
context->module.name = kstrdup(name, GFP_KERNEL); if (!context->module.name) audit_log_lost("out of memory in __audit_log_kern_module"); |
ca86cad73 audit: log module... |
2306 2307 |
context->type = AUDIT_KERN_MODULE; } |
7b9205bd7 audit: create exp... |
2308 |
static void audit_log_task(struct audit_buffer *ab) |
85e7bac33 seccomp: audit ab... |
2309 |
{ |
cca080d9b userns: Convert a... |
2310 2311 |
kuid_t auid, uid; kgid_t gid; |
85e7bac33 seccomp: audit ab... |
2312 |
unsigned int sessionid; |
9eab339b1 audit: get comm u... |
2313 |
char comm[sizeof(current->comm)]; |
85e7bac33 seccomp: audit ab... |
2314 2315 2316 2317 2318 2319 |
auid = audit_get_loginuid(current); sessionid = audit_get_sessionid(current); current_uid_gid(&uid, &gid); audit_log_format(ab, "auid=%u uid=%u gid=%u ses=%u", |
cca080d9b userns: Convert a... |
2320 2321 2322 2323 |
from_kuid(&init_user_ns, auid), from_kuid(&init_user_ns, uid), from_kgid(&init_user_ns, gid), sessionid); |
85e7bac33 seccomp: audit ab... |
2324 |
audit_log_task_context(ab); |
fa2bea2f5 audit: consistent... |
2325 |
audit_log_format(ab, " pid=%d comm=", task_tgid_nr(current)); |
9eab339b1 audit: get comm u... |
2326 |
audit_log_untrustedstring(ab, get_task_comm(comm, current)); |
4766b199e audit: consolidat... |
2327 |
audit_log_d_path_exe(ab, current->mm); |
7b9205bd7 audit: create exp... |
2328 |
} |
e68b75a02 When the capset s... |
2329 |
/** |
0a4ff8c25 [PATCH] Abnormal ... |
2330 |
* audit_core_dumps - record information about processes that end abnormally |
6d9525b52 kerneldoc fix in ... |
2331 |
* @signr: signal value |
0a4ff8c25 [PATCH] Abnormal ... |
2332 2333 2334 2335 2336 2337 2338 |
* * If a process ends with a core dump, something fishy is going on and we * should record the event for investigation. */ void audit_core_dumps(long signr) { struct audit_buffer *ab; |
0a4ff8c25 [PATCH] Abnormal ... |
2339 2340 2341 2342 2343 2344 2345 2346 |
if (!audit_enabled) return; if (signr == SIGQUIT) /* don't care for those */ return; ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND); |
0644ec0cc audit: catch poss... |
2347 2348 |
if (unlikely(!ab)) return; |
61c0ee879 audit: drop audit... |
2349 |
audit_log_task(ab); |
89670affa audit: Make AUDIT... |
2350 |
audit_log_format(ab, " sig=%ld res=1", signr); |
85e7bac33 seccomp: audit ab... |
2351 2352 |
audit_log_end(ab); } |
0a4ff8c25 [PATCH] Abnormal ... |
2353 |
|
3dc1c1b2d seccomp: remove d... |
2354 |
void __audit_seccomp(unsigned long syscall, long signr, int code) |
85e7bac33 seccomp: audit ab... |
2355 2356 |
{ struct audit_buffer *ab; |
7b9205bd7 audit: create exp... |
2357 2358 2359 2360 |
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_SECCOMP); if (unlikely(!ab)) return; audit_log_task(ab); |
84db564aa audit: add arch f... |
2361 |
audit_log_format(ab, " sig=%ld arch=%x syscall=%ld compat=%d ip=0x%lx code=0x%x", |
efbc0fbf3 auditsc: for secc... |
2362 2363 |
signr, syscall_get_arch(), syscall, in_compat_syscall(), KSTK_EIP(current), code); |
0a4ff8c25 [PATCH] Abnormal ... |
2364 2365 |
audit_log_end(ab); } |
916d75761 Fix rule eviction... |
2366 2367 2368 2369 2370 2371 2372 2373 |
struct list_head *audit_killed_trees(void) { struct audit_context *ctx = current->audit_context; if (likely(!ctx || !ctx->in_syscall)) return NULL; return &ctx->killed_trees; } |