1 /*- 2 * Copyright (c) 1999-2002, 2006, 2009, 2019 Robert N. M. Watson 3 * Copyright (c) 2001 Ilmar S. Habibulin 4 * Copyright (c) 2001-2004 Networks Associates Technology, Inc. 5 * Copyright (c) 2006 nCircle Network Security, Inc. 6 * Copyright (c) 2006 SPARTA, Inc. 7 * Copyright (c) 2009 Apple, Inc. 8 * All rights reserved. 9 * 10 * This software was developed by Robert Watson and Ilmar Habibulin for the 11 * TrustedBSD Project. 12 * 13 * This software was developed for the FreeBSD Project in part by Network 14 * Associates Laboratories, the Security Research Division of Network 15 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 16 * as part of the DARPA CHATS research program. 17 * 18 * This software was developed by Robert N. M. Watson for the TrustedBSD 19 * Project under contract to nCircle Network Security, Inc. 20 * 21 * This software was enhanced by SPARTA ISSO under SPAWAR contract 22 * N66001-04-C-6019 ("SEFOS"). 23 * 24 * This software was developed at the University of Cambridge Computer 25 * Laboratory with support from a grant from Google, Inc. 26 * 27 * Redistribution and use in source and binary forms, with or without 28 * modification, are permitted provided that the following conditions 29 * are met: 30 * 1. Redistributions of source code must retain the above copyright 31 * notice, this list of conditions and the following disclaimer. 32 * 2. Redistributions in binary form must reproduce the above copyright 33 * notice, this list of conditions and the following disclaimer in the 34 * documentation and/or other materials provided with the distribution. 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 37 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 39 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 40 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 41 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 42 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 44 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 45 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 46 * SUCH DAMAGE. 47 */ 48 49 #ifndef _SECURITY_MAC_MAC_INTERNAL_H_ 50 #define _SECURITY_MAC_MAC_INTERNAL_H_ 51 52 #ifndef _KERNEL 53 #error "no user-serviceable parts inside" 54 #endif 55 56 #include <sys/lock.h> 57 #include <sys/rmlock.h> 58 59 /* 60 * MAC Framework SDT DTrace probe namespace, macros for declaring entry 61 * point probes, macros for invoking them. 62 */ 63 #ifdef SDT_PROVIDER_DECLARE 64 SDT_PROVIDER_DECLARE(mac); /* MAC Framework-level events. */ 65 SDT_PROVIDER_DECLARE(mac_framework); /* Entry points to MAC. */ 66 67 #define MAC_CHECK_PROBE_DEFINE5(name, arg0, arg1, arg2, arg3, arg4) \ 68 SDT_PROBE_DEFINE6(mac_framework, , name, mac__check__err, \ 69 "int", arg0, arg1, arg2, arg3, arg4); \ 70 SDT_PROBE_DEFINE6(mac_framework, , name, mac__check__ok, \ 71 "int", arg0, arg1, arg2, arg3, arg4); 72 73 #define MAC_CHECK_PROBE_DEFINE4(name, arg0, arg1, arg2, arg3) \ 74 SDT_PROBE_DEFINE5(mac_framework, , name, mac__check__err, \ 75 "int", arg0, arg1, arg2, arg3); \ 76 SDT_PROBE_DEFINE5(mac_framework, , name, mac__check__ok, \ 77 "int", arg0, arg1, arg2, arg3); 78 79 #define MAC_CHECK_PROBE_DEFINE3(name, arg0, arg1, arg2) \ 80 SDT_PROBE_DEFINE4(mac_framework, , name, mac__check__err, \ 81 "int", arg0, arg1, arg2); \ 82 SDT_PROBE_DEFINE4(mac_framework, , name, mac__check__ok, \ 83 "int", arg0, arg1, arg2); 84 85 #define MAC_CHECK_PROBE_DEFINE2(name, arg0, arg1) \ 86 SDT_PROBE_DEFINE3(mac_framework, , name, mac__check__err, \ 87 "int", arg0, arg1); \ 88 SDT_PROBE_DEFINE3(mac_framework, , name, mac__check__ok, \ 89 "int", arg0, arg1); 90 91 #define MAC_CHECK_PROBE_DEFINE1(name, arg0) \ 92 SDT_PROBE_DEFINE2(mac_framework, , name, mac__check__err, \ 93 "int", arg0); \ 94 SDT_PROBE_DEFINE2(mac_framework, , name, mac__check__ok, \ 95 "int", arg0); 96 97 #define MAC_CHECK_PROBE5(name, error, arg0, arg1, arg2, arg3, arg4) do { \ 98 if (SDT_PROBES_ENABLED()) { \ 99 if (error) { \ 100 SDT_PROBE6(mac_framework, , name, mac__check__err,\ 101 error, arg0, arg1, arg2, arg3, arg4); \ 102 } else { \ 103 SDT_PROBE6(mac_framework, , name, mac__check__ok,\ 104 0, arg0, arg1, arg2, arg3, arg4); \ 105 } \ 106 } \ 107 } while (0) 108 109 #define MAC_CHECK_PROBE4(name, error, arg0, arg1, arg2, arg3) \ 110 MAC_CHECK_PROBE5(name, error, arg0, arg1, arg2, arg3, 0) 111 #define MAC_CHECK_PROBE3(name, error, arg0, arg1, arg2) \ 112 MAC_CHECK_PROBE4(name, error, arg0, arg1, arg2, 0) 113 #define MAC_CHECK_PROBE2(name, error, arg0, arg1) \ 114 MAC_CHECK_PROBE3(name, error, arg0, arg1, 0) 115 #define MAC_CHECK_PROBE1(name, error, arg0) \ 116 MAC_CHECK_PROBE2(name, error, arg0, 0) 117 #endif 118 119 #define MAC_GRANT_PROBE_DEFINE2(name, arg0, arg1) \ 120 SDT_PROBE_DEFINE3(mac_framework, , name, mac__grant__err, \ 121 "int", arg0, arg1); \ 122 SDT_PROBE_DEFINE3(mac_framework, , name, mac__grant__ok, \ 123 "int", arg0, arg1); 124 125 #define MAC_GRANT_PROBE2(name, error, arg0, arg1) do { \ 126 if (SDT_PROBES_ENABLED()) { \ 127 if (error) { \ 128 SDT_PROBE3(mac_framework, , name, mac__grant__err,\ 129 error, arg0, arg1); \ 130 } else { \ 131 SDT_PROBE3(mac_framework, , name, mac__grant__ok,\ 132 error, arg0, arg1); \ 133 } \ 134 } \ 135 } while (0) 136 137 /* 138 * MAC Framework global types and typedefs. 139 */ 140 LIST_HEAD(mac_policy_list_head, mac_policy_conf); 141 #ifdef MALLOC_DECLARE 142 MALLOC_DECLARE(M_MACTEMP); 143 #endif 144 145 /* 146 * MAC labels -- in-kernel storage format. 147 * 148 * In general, struct label pointers are embedded in kernel data structures 149 * representing objects that may be labeled (and protected). Struct label is 150 * opaque to both kernel services that invoke the MAC Framework and MAC 151 * policy modules. In particular, we do not wish to encode the layout of the 152 * label structure into any ABIs. Historically, the slot array contained 153 * unions of {long, void} but now contains uintptr_t. 154 */ 155 #define MAC_MAX_SLOTS 4 156 #define MAC_FLAG_INITIALIZED 0x0000001 /* Is initialized for use. */ 157 struct label { 158 int l_flags; 159 intptr_t l_perpolicy[MAC_MAX_SLOTS]; 160 }; 161 162 /* 163 * Flags for mac_labeled, a bitmask of object types need across the union of 164 * all policies currently registered with the MAC Framework, used to key 165 * whether or not labels are allocated and constructors for the type are 166 * invoked. 167 */ 168 #define MPC_OBJECT_CRED 0x0000000000000001 169 #define MPC_OBJECT_PROC 0x0000000000000002 170 #define MPC_OBJECT_VNODE 0x0000000000000004 171 #define MPC_OBJECT_INPCB 0x0000000000000008 172 #define MPC_OBJECT_SOCKET 0x0000000000000010 173 #define MPC_OBJECT_DEVFS 0x0000000000000020 174 #define MPC_OBJECT_MBUF 0x0000000000000040 175 #define MPC_OBJECT_IPQ 0x0000000000000080 176 #define MPC_OBJECT_IFNET 0x0000000000000100 177 #define MPC_OBJECT_BPFDESC 0x0000000000000200 178 #define MPC_OBJECT_PIPE 0x0000000000000400 179 #define MPC_OBJECT_MOUNT 0x0000000000000800 180 #define MPC_OBJECT_POSIXSEM 0x0000000000001000 181 #define MPC_OBJECT_POSIXSHM 0x0000000000002000 182 #define MPC_OBJECT_SYSVMSG 0x0000000000004000 183 #define MPC_OBJECT_SYSVMSQ 0x0000000000008000 184 #define MPC_OBJECT_SYSVSEM 0x0000000000010000 185 #define MPC_OBJECT_SYSVSHM 0x0000000000020000 186 #define MPC_OBJECT_SYNCACHE 0x0000000000040000 187 #define MPC_OBJECT_IP6Q 0x0000000000080000 188 #define MPC_OBJECT_PRISON 0x0000000000100000 189 190 /* 191 * MAC Framework global variables. 192 */ 193 extern struct mac_policy_list_head mac_policy_list; 194 extern struct mac_policy_list_head mac_static_policy_list; 195 extern u_int mac_policy_count; 196 extern uint64_t mac_labeled; 197 extern struct mtx mac_ifnet_mtx; 198 199 /* 200 * MAC Framework infrastructure functions. 201 */ 202 int mac_error_select(int error1, int error2); 203 204 void mac_policy_slock_nosleep(struct rm_priotracker *tracker); 205 void mac_policy_slock_sleep(void); 206 void mac_policy_sunlock_nosleep(struct rm_priotracker *tracker); 207 void mac_policy_sunlock_sleep(void); 208 209 struct label *mac_labelzone_alloc(int flags); 210 void mac_labelzone_free(struct label *label); 211 void mac_labelzone_init(void); 212 213 void mac_init_label(struct label *label); 214 void mac_destroy_label(struct label *label); 215 int mac_check_structmac_consistent(const struct mac *mac); 216 int mac_allocate_slot(void); 217 218 /* 219 * Lock ifnets to protect labels only if ifnet labels are in use. 220 */ 221 #define MAC_IFNET_LOCK(ifp, locked) do { \ 222 if (mac_labeled & MPC_OBJECT_IFNET) { \ 223 mtx_lock(&mac_ifnet_mtx); \ 224 locked = 1; \ 225 } else { \ 226 locked = 0; \ 227 } \ 228 } while (0) 229 230 #define MAC_IFNET_UNLOCK(ifp, locked) do { \ 231 if (locked) { \ 232 mtx_unlock(&mac_ifnet_mtx); \ 233 locked = 0; \ 234 } \ 235 } while (0) 236 237 /* 238 * MAC Framework per-object type functions. It's not yet clear how the 239 * namespaces, etc, should work for these, so for now, sort by object type. 240 */ 241 struct label *mac_cred_label_alloc(void); 242 void mac_cred_label_free(struct label *label); 243 struct label *mac_pipe_label_alloc(void); 244 void mac_pipe_label_free(struct label *label); 245 struct label *mac_prison_label_alloc(int flags); 246 void mac_prison_label_free(struct label *label); 247 struct label *mac_socket_label_alloc(int flag); 248 void mac_socket_label_free(struct label *label); 249 void mac_socketpeer_label_free(struct label *label); 250 struct label *mac_vnode_label_alloc(void); 251 void mac_vnode_label_free(struct label *label); 252 253 int mac_cred_check_relabel(struct ucred *cred, struct label *newlabel); 254 int mac_cred_externalize_label(struct label *label, char *elements, 255 char *outbuf, size_t outbuflen); 256 int mac_cred_internalize_label(struct label *label, char *string); 257 void mac_cred_relabel(struct ucred *cred, struct label *newlabel); 258 259 struct label *mac_mbuf_to_label(struct mbuf *m); 260 261 void mac_pipe_copy_label(struct label *src, struct label *dest); 262 int mac_pipe_externalize_label(struct label *label, char *elements, 263 char *outbuf, size_t outbuflen); 264 int mac_pipe_internalize_label(struct label *label, char *string); 265 266 int mac_prison_label_set(struct ucred *cred, struct prison *pr, 267 struct label *label); 268 int mac_prison_check_relabel(struct ucred *cred, struct prison *pr, 269 struct label *newlabel); 270 void mac_prison_copy_label(struct label *src, struct label *dest); 271 int mac_prison_externalize_label(struct label *label, char *elements, 272 char *outbuf, size_t outbuflen); 273 int mac_prison_internalize_label(struct label *label, char *string); 274 void mac_prison_relabel(struct ucred *cred, struct prison *pr, 275 struct label *newlabel); 276 277 int mac_socket_label_set(struct ucred *cred, struct socket *so, 278 struct label *label); 279 void mac_socket_copy_label(struct label *src, struct label *dest); 280 int mac_socket_externalize_label(struct label *label, char *elements, 281 char *outbuf, size_t outbuflen); 282 int mac_socket_internalize_label(struct label *label, char *string); 283 284 int mac_vnode_externalize_label(struct label *label, char *elements, 285 char *outbuf, size_t outbuflen); 286 int mac_vnode_internalize_label(struct label *label, char *string); 287 void mac_vnode_check_mmap_downgrade(struct ucred *cred, struct vnode *vp, 288 int *prot); 289 int vn_setlabel(struct vnode *vp, struct label *intlabel, 290 struct ucred *cred); 291 292 /* 293 * MAC Framework composition macros invoke all registered MAC policies for a 294 * specific entry point. They come in two forms: one which permits policies 295 * to sleep/block, and another that does not. 296 * 297 * MAC_POLICY_CHECK performs the designated check by walking the policy 298 * module list and checking with each as to how it feels about the request. 299 * Note that it returns its value via 'error' in the scope of the caller. 300 */ 301 #define MAC_POLICY_CHECK(check, args...) do { \ 302 struct mac_policy_conf *mpc; \ 303 \ 304 error = 0; \ 305 LIST_FOREACH(mpc, &mac_static_policy_list, mpc_list) { \ 306 if (mpc->mpc_ops->mpo_ ## check != NULL) \ 307 error = mac_error_select( \ 308 mpc->mpc_ops->mpo_ ## check (args), \ 309 error); \ 310 } \ 311 if (!LIST_EMPTY(&mac_policy_list)) { \ 312 mac_policy_slock_sleep(); \ 313 LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 314 if (mpc->mpc_ops->mpo_ ## check != NULL) \ 315 error = mac_error_select( \ 316 mpc->mpc_ops->mpo_ ## check (args), \ 317 error); \ 318 } \ 319 mac_policy_sunlock_sleep(); \ 320 } \ 321 } while (0) 322 323 #define MAC_POLICY_CHECK_NOSLEEP(check, args...) do { \ 324 struct mac_policy_conf *mpc; \ 325 \ 326 error = 0; \ 327 LIST_FOREACH(mpc, &mac_static_policy_list, mpc_list) { \ 328 if (mpc->mpc_ops->mpo_ ## check != NULL) \ 329 error = mac_error_select( \ 330 mpc->mpc_ops->mpo_ ## check (args), \ 331 error); \ 332 } \ 333 if (!LIST_EMPTY(&mac_policy_list)) { \ 334 struct rm_priotracker tracker; \ 335 \ 336 mac_policy_slock_nosleep(&tracker); \ 337 LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 338 if (mpc->mpc_ops->mpo_ ## check != NULL) \ 339 error = mac_error_select( \ 340 mpc->mpc_ops->mpo_ ## check (args), \ 341 error); \ 342 } \ 343 mac_policy_sunlock_nosleep(&tracker); \ 344 } \ 345 } while (0) 346 347 /* 348 * MAC_POLICY_GRANT performs the designated check by walking the policy 349 * module list and checking with each as to how it feels about the request. 350 * Unlike MAC_POLICY_CHECK, it grants if any policies return '0', and 351 * otherwise returns EPERM. Note that it returns its value via 'error' in 352 * the scope of the caller. 353 */ 354 #define MAC_POLICY_GRANT_NOSLEEP(check, args...) do { \ 355 struct mac_policy_conf *mpc; \ 356 \ 357 error = EPERM; \ 358 LIST_FOREACH(mpc, &mac_static_policy_list, mpc_list) { \ 359 if (mpc->mpc_ops->mpo_ ## check != NULL) { \ 360 if (mpc->mpc_ops->mpo_ ## check(args) == 0) \ 361 error = 0; \ 362 } \ 363 } \ 364 if (!LIST_EMPTY(&mac_policy_list)) { \ 365 struct rm_priotracker tracker; \ 366 \ 367 mac_policy_slock_nosleep(&tracker); \ 368 LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 369 if (mpc->mpc_ops->mpo_ ## check != NULL) { \ 370 if (mpc->mpc_ops->mpo_ ## check (args) \ 371 == 0) \ 372 error = 0; \ 373 } \ 374 } \ 375 mac_policy_sunlock_nosleep(&tracker); \ 376 } \ 377 } while (0) 378 379 /* 380 * MAC_POLICY_BOOLEAN performs the designated boolean composition by walking 381 * the module list, invoking each instance of the operation, and combining 382 * the results using the passed C operator. Note that it returns its value 383 * via 'result' in the scope of the caller, which should be initialized by 384 * the caller in a meaningful way to get a meaningful result. 385 */ 386 #define MAC_POLICY_BOOLEAN(operation, composition, args...) do { \ 387 struct mac_policy_conf *mpc; \ 388 \ 389 LIST_FOREACH(mpc, &mac_static_policy_list, mpc_list) { \ 390 if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 391 result = result composition \ 392 mpc->mpc_ops->mpo_ ## operation (args); \ 393 } \ 394 if (!LIST_EMPTY(&mac_policy_list)) { \ 395 mac_policy_slock_sleep(); \ 396 LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 397 if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 398 result = result composition \ 399 mpc->mpc_ops->mpo_ ## operation \ 400 (args); \ 401 } \ 402 mac_policy_sunlock_sleep(); \ 403 } \ 404 } while (0) 405 406 #define MAC_POLICY_BOOLEAN_NOSLEEP(operation, composition, args...) do {\ 407 struct mac_policy_conf *mpc; \ 408 \ 409 LIST_FOREACH(mpc, &mac_static_policy_list, mpc_list) { \ 410 if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 411 result = result composition \ 412 mpc->mpc_ops->mpo_ ## operation (args); \ 413 } \ 414 if (!LIST_EMPTY(&mac_policy_list)) { \ 415 struct rm_priotracker tracker; \ 416 \ 417 mac_policy_slock_nosleep(&tracker); \ 418 LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 419 if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 420 result = result composition \ 421 mpc->mpc_ops->mpo_ ## operation \ 422 (args); \ 423 } \ 424 mac_policy_sunlock_nosleep(&tracker); \ 425 } \ 426 } while (0) 427 428 /* 429 * MAC_POLICY_EXTERNALIZE queries each policy to see if it can generate an 430 * externalized version of a label element by name. Policies declare whether 431 * they have matched a particular element name, parsed from the string by 432 * MAC_POLICY_EXTERNALIZE, and an error is returned if any element is matched 433 * by no policy. 434 */ 435 #define MAC_POLICY_EXTERNALIZE(type, label, elementlist, outbuf, \ 436 outbuflen) do { \ 437 int claimed, first, ignorenotfound, savedlen; \ 438 char *element_name, *element_temp; \ 439 struct sbuf sb; \ 440 \ 441 error = 0; \ 442 first = 1; \ 443 sbuf_new(&sb, outbuf, outbuflen, SBUF_FIXEDLEN); \ 444 element_temp = elementlist; \ 445 while ((element_name = strsep(&element_temp, ",")) != NULL) { \ 446 if (element_name[0] == '?') { \ 447 element_name++; \ 448 ignorenotfound = 1; \ 449 } else \ 450 ignorenotfound = 0; \ 451 savedlen = sbuf_len(&sb); \ 452 if (first) \ 453 error = sbuf_printf(&sb, "%s/", element_name); \ 454 else \ 455 error = sbuf_printf(&sb, ",%s/", element_name); \ 456 if (error == -1) { \ 457 error = EINVAL; /* XXX: E2BIG? */ \ 458 break; \ 459 } \ 460 claimed = 0; \ 461 MAC_POLICY_CHECK(type ## _externalize_label, label, \ 462 element_name, &sb, &claimed); \ 463 if (error) \ 464 break; \ 465 if (claimed == 0 && ignorenotfound) { \ 466 /* Revert last label name. */ \ 467 sbuf_setpos(&sb, savedlen); \ 468 } else if (claimed != 1) { \ 469 error = EINVAL; /* XXX: ENOLABEL? */ \ 470 break; \ 471 } else { \ 472 first = 0; \ 473 } \ 474 } \ 475 sbuf_finish(&sb); \ 476 } while (0) 477 478 /* 479 * MAC_POLICY_INTERNALIZE presents parsed element names and data to each 480 * policy to see if any is willing to claim it and internalize the label 481 * data. If no policies match, an error is returned. 482 */ 483 #define MAC_POLICY_INTERNALIZE(type, label, instring) do { \ 484 char *element, *element_name, *element_data; \ 485 int claimed; \ 486 \ 487 error = 0; \ 488 element = instring; \ 489 while ((element_name = strsep(&element, ",")) != NULL) { \ 490 element_data = element_name; \ 491 element_name = strsep(&element_data, "/"); \ 492 if (element_data == NULL) { \ 493 error = EINVAL; \ 494 break; \ 495 } \ 496 claimed = 0; \ 497 MAC_POLICY_CHECK(type ## _internalize_label, label, \ 498 element_name, element_data, &claimed); \ 499 if (error) \ 500 break; \ 501 if (claimed != 1) { \ 502 /* XXXMAC: Another error here? */ \ 503 error = EINVAL; \ 504 break; \ 505 } \ 506 } \ 507 } while (0) 508 509 /* 510 * MAC_POLICY_PERFORM performs the designated operation by walking the policy 511 * module list and invoking that operation for each policy. 512 */ 513 #define MAC_POLICY_PERFORM(operation, args...) do { \ 514 struct mac_policy_conf *mpc; \ 515 \ 516 LIST_FOREACH(mpc, &mac_static_policy_list, mpc_list) { \ 517 if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 518 mpc->mpc_ops->mpo_ ## operation (args); \ 519 } \ 520 if (!LIST_EMPTY(&mac_policy_list)) { \ 521 mac_policy_slock_sleep(); \ 522 LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 523 if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 524 mpc->mpc_ops->mpo_ ## operation (args); \ 525 } \ 526 mac_policy_sunlock_sleep(); \ 527 } \ 528 } while (0) 529 530 #define MAC_POLICY_PERFORM_NOSLEEP(operation, args...) do { \ 531 struct mac_policy_conf *mpc; \ 532 \ 533 LIST_FOREACH(mpc, &mac_static_policy_list, mpc_list) { \ 534 if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 535 mpc->mpc_ops->mpo_ ## operation (args); \ 536 } \ 537 if (!LIST_EMPTY(&mac_policy_list)) { \ 538 struct rm_priotracker tracker; \ 539 \ 540 mac_policy_slock_nosleep(&tracker); \ 541 LIST_FOREACH(mpc, &mac_policy_list, mpc_list) { \ 542 if (mpc->mpc_ops->mpo_ ## operation != NULL) \ 543 mpc->mpc_ops->mpo_ ## operation (args); \ 544 } \ 545 mac_policy_sunlock_nosleep(&tracker); \ 546 } \ 547 } while (0) 548 549 #endif /* !_SECURITY_MAC_MAC_INTERNAL_H_ */ 550