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1 2 3 4 5 6 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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 | /* * Copyright (c) 2004-2010 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce * support for mandatory and extensible security protections. This notice * is included in support of clause 2.2 (b) of the Apple Public License, * Version 2.0. */ #ifndef _SYS_KAUTH_H #define _SYS_KAUTH_H #include <sys/appleapiopts.h> #include <sys/cdefs.h> #include <mach/boolean.h> #include <machine/types.h> /* u_int8_t, etc. */ #include <sys/_types.h> /* __offsetof() */ #include <sys/_types/_uid_t.h> /* uid_t */ #include <sys/_types/_gid_t.h> /* gid_t */ #include <sys/syslimits.h> /* NGROUPS_MAX */ #ifdef __APPLE_API_EVOLVING /* * Identities. */ #define KAUTH_UID_NONE (~(uid_t)0 - 100) /* not a valid UID */ #define KAUTH_GID_NONE (~(gid_t)0 - 100) /* not a valid GID */ #include <sys/_types/_guid_t.h> /* NT Security Identifier, structure as defined by Microsoft */ #pragma pack(1) /* push packing of 1 byte */ typedef struct { u_int8_t sid_kind; u_int8_t sid_authcount; u_int8_t sid_authority[6]; #define KAUTH_NTSID_MAX_AUTHORITIES 16 u_int32_t sid_authorities[KAUTH_NTSID_MAX_AUTHORITIES]; } ntsid_t; #pragma pack() /* pop packing to previous packing level */ #define _NTSID_T /* valid byte count inside a SID structure */ #define KAUTH_NTSID_HDRSIZE (8) #define KAUTH_NTSID_SIZE(_s) (KAUTH_NTSID_HDRSIZE + ((_s)->sid_authcount * sizeof(u_int32_t))) /* * External lookup message payload; this structure is shared between the * kernel group membership resolver, and the user space group membership * resolver daemon, and is use to communicate resolution requests from the * kernel to user space, and the result of that request from user space to * the kernel. */ struct kauth_identity_extlookup { u_int32_t el_seqno; /* request sequence number */ u_int32_t el_result; /* lookup result */ #define KAUTH_EXTLOOKUP_SUCCESS 0 /* results here are good */ #define KAUTH_EXTLOOKUP_BADRQ 1 /* request badly formatted */ #define KAUTH_EXTLOOKUP_FAILURE 2 /* transient failure during lookup */ #define KAUTH_EXTLOOKUP_FATAL 3 /* permanent failure during lookup */ #define KAUTH_EXTLOOKUP_INPROG 100 /* request in progress */ u_int32_t el_flags; #define KAUTH_EXTLOOKUP_VALID_UID (1<<0) #define KAUTH_EXTLOOKUP_VALID_UGUID (1<<1) #define KAUTH_EXTLOOKUP_VALID_USID (1<<2) #define KAUTH_EXTLOOKUP_VALID_GID (1<<3) #define KAUTH_EXTLOOKUP_VALID_GGUID (1<<4) #define KAUTH_EXTLOOKUP_VALID_GSID (1<<5) #define KAUTH_EXTLOOKUP_WANT_UID (1<<6) #define KAUTH_EXTLOOKUP_WANT_UGUID (1<<7) #define KAUTH_EXTLOOKUP_WANT_USID (1<<8) #define KAUTH_EXTLOOKUP_WANT_GID (1<<9) #define KAUTH_EXTLOOKUP_WANT_GGUID (1<<10) #define KAUTH_EXTLOOKUP_WANT_GSID (1<<11) #define KAUTH_EXTLOOKUP_WANT_MEMBERSHIP (1<<12) #define KAUTH_EXTLOOKUP_VALID_MEMBERSHIP (1<<13) #define KAUTH_EXTLOOKUP_ISMEMBER (1<<14) #define KAUTH_EXTLOOKUP_VALID_PWNAM (1<<15) #define KAUTH_EXTLOOKUP_WANT_PWNAM (1<<16) #define KAUTH_EXTLOOKUP_VALID_GRNAM (1<<17) #define KAUTH_EXTLOOKUP_WANT_GRNAM (1<<18) #define KAUTH_EXTLOOKUP_VALID_SUPGRPS (1<<19) #define KAUTH_EXTLOOKUP_WANT_SUPGRPS (1<<20) __darwin_pid_t el_info_pid; /* request on behalf of PID */ u_int64_t el_extend; /* extension field */ u_int32_t el_info_reserved_1; /* reserved (APPLE) */ uid_t el_uid; /* user ID */ guid_t el_uguid; /* user GUID */ u_int32_t el_uguid_valid; /* TTL on translation result (seconds) */ ntsid_t el_usid; /* user NT SID */ u_int32_t el_usid_valid; /* TTL on translation result (seconds) */ gid_t el_gid; /* group ID */ guid_t el_gguid; /* group GUID */ u_int32_t el_gguid_valid; /* TTL on translation result (seconds) */ ntsid_t el_gsid; /* group SID */ u_int32_t el_gsid_valid; /* TTL on translation result (seconds) */ u_int32_t el_member_valid; /* TTL on group lookup result */ u_int32_t el_sup_grp_cnt; /* count of supplemental groups up to NGROUPS */ gid_t el_sup_groups[NGROUPS_MAX]; /* supplemental group list */ }; struct kauth_cache_sizes { u_int32_t kcs_group_size; u_int32_t kcs_id_size; }; #define KAUTH_EXTLOOKUP_REGISTER (0) #define KAUTH_EXTLOOKUP_RESULT (1<<0) #define KAUTH_EXTLOOKUP_WORKER (1<<1) #define KAUTH_EXTLOOKUP_DEREGISTER (1<<2) #define KAUTH_GET_CACHE_SIZES (1<<3) #define KAUTH_SET_CACHE_SIZES (1<<4) #define KAUTH_CLEAR_CACHES (1<<5) #define IDENTITYSVC_ENTITLEMENT "com.apple.private.identitysvc" #ifdef KERNEL /* * Credentials. */ /* XXX just for now */ #include <sys/ucred.h> /* Kernel SPI for now */ __BEGIN_DECLS /* * Routines specific to credentials with POSIX credential labels attached * * XXX Should be in policy_posix.h, with struct posix_cred */ extern kauth_cred_t posix_cred_create(posix_cred_t pcred); extern posix_cred_t posix_cred_get(kauth_cred_t cred); extern void posix_cred_label(kauth_cred_t cred, posix_cred_t pcred); extern int posix_cred_access(kauth_cred_t cred, id_t object_uid, id_t object_gid, mode_t object_mode, mode_t mode_req); extern uid_t kauth_getuid(void); extern uid_t kauth_getruid(void); extern gid_t kauth_getgid(void); extern kauth_cred_t kauth_cred_get(void); extern kauth_cred_t kauth_cred_get_with_ref(void); extern kauth_cred_t kauth_cred_proc_ref(proc_t procp); extern kauth_cred_t kauth_cred_create(kauth_cred_t cred); extern void kauth_cred_ref(kauth_cred_t _cred); #ifndef __LP64__ /* Use kauth_cred_unref(), not kauth_cred_rele() */ extern void kauth_cred_rele(kauth_cred_t _cred) __deprecated; #endif extern void kauth_cred_unref(kauth_cred_t *_cred); #if CONFIG_MACF struct label; extern kauth_cred_t kauth_cred_label_update(kauth_cred_t cred, struct label *label); extern int kauth_proc_label_update(struct proc *p, struct label *label); #else /* this is a temp hack to cover us when MAC is not built in a kernel configuration. * Since we cannot build our export list based on the kernel configuration we need * to define a stub. */ extern kauth_cred_t kauth_cred_label_update(kauth_cred_t cred, void *label); extern int kauth_proc_label_update(struct proc *p, void *label); #endif __deprecated_msg("Unsafe interface: requires lock holds that aren't exposed") extern kauth_cred_t kauth_cred_find(kauth_cred_t cred); extern uid_t kauth_cred_getuid(kauth_cred_t _cred); extern uid_t kauth_cred_getruid(kauth_cred_t _cred); extern uid_t kauth_cred_getsvuid(kauth_cred_t _cred); extern gid_t kauth_cred_getgid(kauth_cred_t _cred); extern gid_t kauth_cred_getrgid(kauth_cred_t _cred); extern gid_t kauth_cred_getsvgid(kauth_cred_t _cred); extern int kauth_cred_pwnam2guid(char *pwnam, guid_t *guidp); extern int kauth_cred_grnam2guid(char *grnam, guid_t *guidp); extern int kauth_cred_guid2pwnam(guid_t *guidp, char *pwnam); extern int kauth_cred_guid2grnam(guid_t *guidp, char *grnam); extern int kauth_cred_guid2uid(guid_t *_guid, uid_t *_uidp); extern int kauth_cred_guid2gid(guid_t *_guid, gid_t *_gidp); extern int kauth_cred_ntsid2uid(ntsid_t *_sid, uid_t *_uidp); extern int kauth_cred_ntsid2gid(ntsid_t *_sid, gid_t *_gidp); extern int kauth_cred_ntsid2guid(ntsid_t *_sid, guid_t *_guidp); extern int kauth_cred_uid2guid(uid_t _uid, guid_t *_guidp); extern int kauth_cred_getguid(kauth_cred_t _cred, guid_t *_guidp); extern int kauth_cred_gid2guid(gid_t _gid, guid_t *_guidp); extern int kauth_cred_uid2ntsid(uid_t _uid, ntsid_t *_sidp); extern int kauth_cred_getntsid(kauth_cred_t _cred, ntsid_t *_sidp); extern int kauth_cred_gid2ntsid(gid_t _gid, ntsid_t *_sidp); extern int kauth_cred_guid2ntsid(guid_t *_guid, ntsid_t *_sidp); extern int kauth_cred_ismember_gid(kauth_cred_t _cred, gid_t _gid, int *_resultp); extern int kauth_cred_ismember_guid(kauth_cred_t _cred, guid_t *_guidp, int *_resultp); extern int kauth_cred_nfs4domain2dsnode(char *nfs4domain, char *dsnode); extern int kauth_cred_dsnode2nfs4domain(char *dsnode, char *nfs4domain); extern int groupmember(gid_t gid, kauth_cred_t cred); /* currently only exported in unsupported for use by seatbelt */ extern int kauth_cred_issuser(kauth_cred_t _cred); /* GUID, NTSID helpers */ extern guid_t kauth_null_guid; extern int kauth_guid_equal(guid_t *_guid1, guid_t *_guid2); #ifdef KERNEL_PRIVATE extern int kauth_cred_getgroups(kauth_cred_t _cred, gid_t *_groups, size_t *_groupcount); #endif /* KERNEL_PRIVATE */ #ifdef XNU_KERNEL_PRIVATE extern int kauth_ntsid_equal(ntsid_t *_sid1, ntsid_t *_sid2); extern int kauth_wellknown_guid(guid_t *_guid); #define KAUTH_WKG_NOT 0 /* not a well-known GUID */ #define KAUTH_WKG_OWNER 1 #define KAUTH_WKG_GROUP 2 #define KAUTH_WKG_NOBODY 3 #define KAUTH_WKG_EVERYBODY 4 extern gid_t kauth_getrgid(void); extern int cantrace(proc_t cur_procp, kauth_cred_t creds, proc_t traced_procp, int *errp); extern kauth_cred_t kauth_cred_copy_real(kauth_cred_t cred); extern kauth_cred_t kauth_cred_setresuid(kauth_cred_t cred, uid_t ruid, uid_t euid, uid_t svuid, uid_t gmuid); extern kauth_cred_t kauth_cred_setresgid(kauth_cred_t cred, gid_t rgid, gid_t egid, gid_t svgid); extern kauth_cred_t kauth_cred_setuidgid(kauth_cred_t cred, uid_t uid, gid_t gid); extern kauth_cred_t kauth_cred_setsvuidgid(kauth_cred_t cred, uid_t uid, gid_t gid); extern kauth_cred_t kauth_cred_setgroups(kauth_cred_t cred, gid_t *groups, size_t groupcount, uid_t gmuid); struct uthread; extern void kauth_cred_thread_update(struct thread *, proc_t); #ifdef CONFIG_MACF extern void kauth_proc_label_update_execve(struct proc *p, struct vfs_context *ctx, struct vnode *vp, off_t offset, struct vnode *scriptvp, struct label *scriptlabel, struct label *execlabel, unsigned int *csflags, void *psattr, int *disjoint, int *update_return); #endif extern int kauth_cred_gid_subset(kauth_cred_t _cred1, kauth_cred_t _cred2, int *_resultp); struct auditinfo_addr; extern kauth_cred_t kauth_cred_setauditinfo(kauth_cred_t, au_session_t *); extern int kauth_cred_supplementary_register(const char *name, int *ident); extern int kauth_cred_supplementary_add(kauth_cred_t cred, int ident, const void *data, size_t datasize); extern int kauth_cred_supplementary_remove(kauth_cred_t cred, int ident); extern kauth_cred_t kauth_cred_require(kauth_cred_t cred) __pure2; extern void kauth_cred_set(kauth_cred_t *credp, kauth_cred_t new_cred); extern void kauth_cred_set_and_unref(kauth_cred_t *credp, kauth_cred_t *new_credp); #if HAS_APPLE_PAC /* * `kauth_cred_set` and `kauth_cred_unref` take pointers to a * `kauth_cred_t`, which the compiler considers strictly different from a * pointer to a signed `kauth_cred_t` (as it should do). These macros * therefore authenticate the arguments into naked locals, pass them to the * function and then write back the results, signing them in the process. */ #define kauth_cred_set(credp, new_cred) \ do { \ kauth_cred_t _cred = *(credp); \ (kauth_cred_set)(&_cred, (new_cred)); \ *(credp) = _cred; \ } while (0) #define kauth_cred_set_and_unref(credp, new_credp) \ do { \ kauth_cred_t _cred = *(credp); \ (kauth_cred_set_and_unref)(&_cred, (new_credp)); \ *(credp) = _cred; \ } while (0) #define kauth_cred_unref(credp) \ do { \ kauth_cred_t _credp = *(credp); \ (kauth_cred_unref)(&_credp); \ *(credp) = _credp; \ } while (0) #endif /* HAS_APPLE_PAC */ #endif /* XNU_KERNEL_PRIVATE */ __END_DECLS #endif /* KERNEL */ /* * Generic Access Control Lists. */ #if defined(KERNEL) || defined (_SYS_ACL_H) typedef u_int32_t kauth_ace_rights_t; /* Access Control List Entry (ACE) */ struct kauth_ace { guid_t ace_applicable; u_int32_t ace_flags; #define KAUTH_ACE_KINDMASK 0xf #define KAUTH_ACE_PERMIT 1 #define KAUTH_ACE_DENY 2 #define KAUTH_ACE_AUDIT 3 /* not implemented */ #define KAUTH_ACE_ALARM 4 /* not implemented */ #define KAUTH_ACE_INHERITED (1<<4) #define KAUTH_ACE_FILE_INHERIT (1<<5) #define KAUTH_ACE_DIRECTORY_INHERIT (1<<6) #define KAUTH_ACE_LIMIT_INHERIT (1<<7) #define KAUTH_ACE_ONLY_INHERIT (1<<8) #define KAUTH_ACE_SUCCESS (1<<9) /* not implemented (AUDIT/ALARM) */ #define KAUTH_ACE_FAILURE (1<<10) /* not implemented (AUDIT/ALARM) */ /* All flag bits controlling ACE inheritance */ #define KAUTH_ACE_INHERIT_CONTROL_FLAGS \ (KAUTH_ACE_FILE_INHERIT | \ KAUTH_ACE_DIRECTORY_INHERIT | \ KAUTH_ACE_LIMIT_INHERIT | \ KAUTH_ACE_ONLY_INHERIT) kauth_ace_rights_t ace_rights; /* scope specific */ /* These rights are never tested, but may be present in an ACL */ #define KAUTH_ACE_GENERIC_ALL (1<<21) #define KAUTH_ACE_GENERIC_EXECUTE (1<<22) #define KAUTH_ACE_GENERIC_WRITE (1<<23) #define KAUTH_ACE_GENERIC_READ (1<<24) }; #ifndef _KAUTH_ACE #define _KAUTH_ACE typedef struct kauth_ace *kauth_ace_t; #endif /* Access Control List */ struct kauth_acl { u_int32_t acl_entrycount; u_int32_t acl_flags; struct kauth_ace acl_ace[1]; }; /* * XXX this value needs to be raised - 3893388 */ #define KAUTH_ACL_MAX_ENTRIES 128 /* * The low 16 bits of the flags field are reserved for filesystem * internal use and must be preserved by all APIs. This includes * round-tripping flags through user-space interfaces. */ #define KAUTH_ACL_FLAGS_PRIVATE (0xffff) /* * The high 16 bits of the flags are used to store attributes and * to request specific handling of the ACL. */ /* inheritance will be deferred until the first rename operation */ #define KAUTH_ACL_DEFER_INHERIT (1<<16) /* this ACL must not be overwritten as part of an inheritance operation */ #define KAUTH_ACL_NO_INHERIT (1<<17) /* acl_entrycount that tells us the ACL is not valid */ #define KAUTH_FILESEC_NOACL ((u_int32_t)(-1)) /* * If the acl_entrycount field is KAUTH_FILESEC_NOACL, then the size is the * same as a kauth_acl structure; the intent is to put an actual entrycount of * KAUTH_FILESEC_NOACL on disk to distinguish a kauth_filesec_t with an empty * entry (Windows treats this as "deny all") from one that merely indicates a * file group and/or owner guid values. */ #define KAUTH_ACL_SIZE(c) (__offsetof(struct kauth_acl, acl_ace) + ((u_int32_t)(c) != KAUTH_FILESEC_NOACL ? ((c) * sizeof(struct kauth_ace)) : 0)) #define KAUTH_ACL_COPYSIZE(p) KAUTH_ACL_SIZE((p)->acl_entrycount) #ifndef _KAUTH_ACL #define _KAUTH_ACL typedef struct kauth_acl *kauth_acl_t; #endif #ifdef KERNEL __BEGIN_DECLS kauth_acl_t kauth_acl_alloc(int size); void kauth_acl_free(kauth_acl_t fsp); __END_DECLS #endif /* * Extended File Security. */ /* File Security information */ struct kauth_filesec { u_int32_t fsec_magic; #define KAUTH_FILESEC_MAGIC 0x012cc16d guid_t fsec_owner; guid_t fsec_group; struct kauth_acl fsec_acl; }; /* backwards compatibility */ #define fsec_entrycount fsec_acl.acl_entrycount #define fsec_flags fsec_acl.acl_flags #define fsec_ace fsec_acl.acl_ace #define KAUTH_FILESEC_FLAGS_PRIVATE KAUTH_ACL_FLAGS_PRIVATE #define KAUTH_FILESEC_DEFER_INHERIT KAUTH_ACL_DEFER_INHERIT #define KAUTH_FILESEC_NO_INHERIT KAUTH_ACL_NO_INHERIT #define KAUTH_FILESEC_NONE ((kauth_filesec_t)0) #define KAUTH_FILESEC_WANTED ((kauth_filesec_t)1) #ifndef _KAUTH_FILESEC #define _KAUTH_FILESEC typedef struct kauth_filesec *kauth_filesec_t; #endif #define KAUTH_FILESEC_SIZE(c) (__offsetof(struct kauth_filesec, fsec_acl) + __offsetof(struct kauth_acl, acl_ace) + (c) * sizeof(struct kauth_ace)) #define KAUTH_FILESEC_COPYSIZE(p) KAUTH_FILESEC_SIZE(((p)->fsec_entrycount == KAUTH_FILESEC_NOACL) ? 0 : (p)->fsec_entrycount) #define KAUTH_FILESEC_COUNT(s) (((s) - KAUTH_FILESEC_SIZE(0)) / sizeof(struct kauth_ace)) #define KAUTH_FILESEC_VALID(s) ((s) >= KAUTH_FILESEC_SIZE(0) && (((s) - KAUTH_FILESEC_SIZE(0)) % sizeof(struct kauth_ace)) == 0) #define KAUTH_FILESEC_XATTR "com.apple.system.Security" /* Allowable first arguments to kauth_filesec_acl_setendian() */ #define KAUTH_ENDIAN_HOST 0x00000001 /* set host endianness */ #define KAUTH_ENDIAN_DISK 0x00000002 /* set disk endianness */ #endif /* KERNEL || <sys/acl.h> */ #ifdef KERNEL /* * Scope management. */ struct kauth_scope; typedef struct kauth_scope *kauth_scope_t; struct kauth_listener; typedef struct kauth_listener *kauth_listener_t; #ifndef _KAUTH_ACTION_T typedef int kauth_action_t; # define _KAUTH_ACTION_T #endif typedef int (* kauth_scope_callback_t)(kauth_cred_t _credential, void *_idata, kauth_action_t _action, uintptr_t _arg0, uintptr_t _arg1, uintptr_t _arg2, uintptr_t _arg3); #define KAUTH_RESULT_ALLOW (1) #define KAUTH_RESULT_DENY (2) #define KAUTH_RESULT_DEFER (3) struct kauth_acl_eval { kauth_ace_t ae_acl; int ae_count; kauth_ace_rights_t ae_requested; kauth_ace_rights_t ae_residual; int ae_result; boolean_t ae_found_deny; int ae_options; #define KAUTH_AEVAL_IS_OWNER (1<<0) /* authorizing operation for owner */ #define KAUTH_AEVAL_IN_GROUP (1<<1) /* authorizing operation for groupmember */ #define KAUTH_AEVAL_IN_GROUP_UNKNOWN (1<<2) /* authorizing operation for unknown group membership */ /* expansions for 'generic' rights bits */ kauth_ace_rights_t ae_exp_gall; kauth_ace_rights_t ae_exp_gread; kauth_ace_rights_t ae_exp_gwrite; kauth_ace_rights_t ae_exp_gexec; }; typedef struct kauth_acl_eval *kauth_acl_eval_t; __BEGIN_DECLS kauth_filesec_t kauth_filesec_alloc(int size); void kauth_filesec_free(kauth_filesec_t fsp); extern kauth_scope_t kauth_register_scope(const char *_identifier, kauth_scope_callback_t _callback, void *_idata); extern void kauth_deregister_scope(kauth_scope_t _scope); __kpi_deprecated("Use EndpointSecurity instead") extern kauth_listener_t kauth_listen_scope(const char *_identifier, kauth_scope_callback_t _callback, void *_idata); __kpi_deprecated("Use EndpointSecurity instead") extern void kauth_unlisten_scope(kauth_listener_t _scope); extern int kauth_authorize_action(kauth_scope_t _scope, kauth_cred_t _credential, kauth_action_t _action, uintptr_t _arg0, uintptr_t _arg1, uintptr_t _arg2, uintptr_t _arg3); /* default scope handlers */ extern int kauth_authorize_allow(kauth_cred_t _credential, void *_idata, kauth_action_t _action, uintptr_t _arg0, uintptr_t _arg1, uintptr_t _arg2, uintptr_t _arg3); #ifdef KERNEL_PRIVATE extern int kauth_acl_evaluate(kauth_cred_t _credential, kauth_acl_eval_t _eval); #endif /* KERNEL_PRIVATE */ #ifdef XNU_KERNEL_PRIVATE void kauth_filesec_acl_setendian(int, kauth_filesec_t, kauth_acl_t); int kauth_copyinfilesec(user_addr_t xsecurity, kauth_filesec_t *xsecdestpp); extern int kauth_acl_inherit(vnode_t _dvp, kauth_acl_t _initial, kauth_acl_t *_product, int _isdir, vfs_context_t _ctx); #endif /* XNU_KERNEL_PRIVATE */ __END_DECLS /* * Generic scope. */ #define KAUTH_SCOPE_GENERIC "com.apple.kauth.generic" /* Actions */ #define KAUTH_GENERIC_ISSUSER 1 #ifdef XNU_KERNEL_PRIVATE __BEGIN_DECLS extern int kauth_authorize_generic(kauth_cred_t credential, kauth_action_t action); __END_DECLS #endif /* XNU_KERNEL_PRIVATE */ /* * Process/task scope. */ #define KAUTH_SCOPE_PROCESS "com.apple.kauth.process" /* Actions */ #define KAUTH_PROCESS_CANSIGNAL 1 #define KAUTH_PROCESS_CANTRACE 2 __BEGIN_DECLS extern int kauth_authorize_process(kauth_cred_t _credential, kauth_action_t _action, struct proc *_process, uintptr_t _arg1, uintptr_t _arg2, uintptr_t _arg3); __END_DECLS /* * Vnode operation scope. * * Prototype for vnode_authorize is in vnode.h */ #define KAUTH_SCOPE_VNODE "com.apple.kauth.vnode" /* * File system operation scope. * */ #define KAUTH_SCOPE_FILEOP "com.apple.kauth.fileop" /* Actions */ #define KAUTH_FILEOP_OPEN 1 #define KAUTH_FILEOP_CLOSE 2 #define KAUTH_FILEOP_RENAME 3 #define KAUTH_FILEOP_EXCHANGE 4 #define KAUTH_FILEOP_LINK 5 #define KAUTH_FILEOP_EXEC 6 #define KAUTH_FILEOP_DELETE 7 #define KAUTH_FILEOP_WILL_RENAME 8 /* * arguments passed to KAUTH_FILEOP_OPEN listeners * arg0 is pointer to vnode (vnode *) for given user path. * arg1 is pointer to path (char *) passed in to open. * arguments passed to KAUTH_FILEOP_CLOSE listeners * arg0 is pointer to vnode (vnode *) for file to be closed. * arg1 is pointer to path (char *) of file to be closed. * arg2 is close flags. * arguments passed to KAUTH_FILEOP_WILL_RENAME listeners * arg0 is pointer to vnode (vnode *) of the file being renamed * arg1 is pointer to the "from" path (char *) * arg2 is pointer to the "to" path (char *) * arguments passed to KAUTH_FILEOP_RENAME listeners * arg0 is pointer to "from" path (char *). * arg1 is pointer to "to" path (char *). * arguments passed to KAUTH_FILEOP_EXCHANGE listeners * arg0 is pointer to file 1 path (char *). * arg1 is pointer to file 2 path (char *). * arguments passed to KAUTH_FILEOP_LINK listeners * arg0 is pointer to path to file we are linking to (char *). * arg1 is pointer to path to the new link file (char *). * arguments passed to KAUTH_FILEOP_EXEC listeners * arg0 is pointer to vnode (vnode *) for executable. * arg1 is pointer to path (char *) to executable. * arguments passed to KAUTH_FILEOP_DELETE listeners * arg0 is pointer to vnode (vnode *) of file/dir that was deleted. * arg1 is pointer to path (char *) of file/dir that was deleted. */ /* Flag values returned to close listeners. */ #define KAUTH_FILEOP_CLOSE_MODIFIED (1<<1) __BEGIN_DECLS #ifdef XNU_KERNEL_PRIVATE extern int kauth_authorize_fileop_has_listeners(void); #endif /* XNU_KERNEL_PRIVATE */ extern int kauth_authorize_fileop(kauth_cred_t _credential, kauth_action_t _action, uintptr_t _arg0, uintptr_t _arg1); __END_DECLS #endif /* KERNEL */ /* Actions, also rights bits in an ACE */ #if defined(KERNEL) || defined (_SYS_ACL_H) #define KAUTH_VNODE_READ_DATA (1U<<1) #define KAUTH_VNODE_LIST_DIRECTORY KAUTH_VNODE_READ_DATA #define KAUTH_VNODE_WRITE_DATA (1U<<2) #define KAUTH_VNODE_ADD_FILE KAUTH_VNODE_WRITE_DATA #define KAUTH_VNODE_EXECUTE (1U<<3) #define KAUTH_VNODE_SEARCH KAUTH_VNODE_EXECUTE #define KAUTH_VNODE_DELETE (1U<<4) #define KAUTH_VNODE_APPEND_DATA (1U<<5) #define KAUTH_VNODE_ADD_SUBDIRECTORY KAUTH_VNODE_APPEND_DATA #define KAUTH_VNODE_DELETE_CHILD (1U<<6) #define KAUTH_VNODE_READ_ATTRIBUTES (1U<<7) #define KAUTH_VNODE_WRITE_ATTRIBUTES (1U<<8) #define KAUTH_VNODE_READ_EXTATTRIBUTES (1U<<9) #define KAUTH_VNODE_WRITE_EXTATTRIBUTES (1U<<10) #define KAUTH_VNODE_READ_SECURITY (1U<<11) #define KAUTH_VNODE_WRITE_SECURITY (1U<<12) #define KAUTH_VNODE_TAKE_OWNERSHIP (1U<<13) /* backwards compatibility only */ #define KAUTH_VNODE_CHANGE_OWNER KAUTH_VNODE_TAKE_OWNERSHIP /* For Windows interoperability only */ #define KAUTH_VNODE_SYNCHRONIZE (1U<<20) /* (1<<21) - (1<<24) are reserved for generic rights bits */ /* Actions not expressed as rights bits */ /* * Authorizes the vnode as the target of a hard link. */ #define KAUTH_VNODE_LINKTARGET (1U<<25) /* * Indicates that other steps have been taken to authorise the action, * but authorisation should be denied for immutable objects. */ #define KAUTH_VNODE_CHECKIMMUTABLE (1U<<26) /* Action modifiers */ /* * The KAUTH_VNODE_ACCESS bit is passed to the callback if the authorisation * request in progress is advisory, rather than authoritative. Listeners * performing consequential work (i.e. not strictly checking authorisation) * may test this flag to avoid performing unnecessary work. * * This bit will never be present in an ACE. */ #define KAUTH_VNODE_ACCESS (1U<<31) /* * The KAUTH_VNODE_NOIMMUTABLE bit is passed to the callback along with the * KAUTH_VNODE_WRITE_SECURITY bit (and no others) to indicate that the * caller wishes to change one or more of the immutable flags, and the * state of these flags should not be considered when authorizing the request. * The system immutable flags are only ignored when the system securelevel * is low enough to allow their removal. */ #define KAUTH_VNODE_NOIMMUTABLE (1U<<30) /* * fake right that is composed by the following... * vnode must have search for owner, group and world allowed * plus there must be no deny modes present for SEARCH... this fake * right is used by the fast lookup path to avoid checking * for an exact match on the last credential to lookup * the component being acted on */ #define KAUTH_VNODE_SEARCHBYANYONE (1U<<29) /* * when passed as an 'action' to "vnode_uncache_authorized_actions" * it indicates that all of the cached authorizations for that * vnode should be invalidated */ #define KAUTH_INVALIDATE_CACHED_RIGHTS ((kauth_action_t)~0) /* The expansions of the GENERIC bits at evaluation time */ #define KAUTH_VNODE_GENERIC_READ_BITS (KAUTH_VNODE_READ_DATA | \ KAUTH_VNODE_READ_ATTRIBUTES | \ KAUTH_VNODE_READ_EXTATTRIBUTES | \ KAUTH_VNODE_READ_SECURITY) #define KAUTH_VNODE_GENERIC_WRITE_BITS (KAUTH_VNODE_WRITE_DATA | \ KAUTH_VNODE_APPEND_DATA | \ KAUTH_VNODE_DELETE | \ KAUTH_VNODE_DELETE_CHILD | \ KAUTH_VNODE_WRITE_ATTRIBUTES | \ KAUTH_VNODE_WRITE_EXTATTRIBUTES | \ KAUTH_VNODE_WRITE_SECURITY) #define KAUTH_VNODE_GENERIC_EXECUTE_BITS (KAUTH_VNODE_EXECUTE) #define KAUTH_VNODE_GENERIC_ALL_BITS (KAUTH_VNODE_GENERIC_READ_BITS | \ KAUTH_VNODE_GENERIC_WRITE_BITS | \ KAUTH_VNODE_GENERIC_EXECUTE_BITS) /* * Some sets of bits, defined here for convenience. */ #define KAUTH_VNODE_WRITE_RIGHTS (KAUTH_VNODE_ADD_FILE | \ KAUTH_VNODE_ADD_SUBDIRECTORY | \ KAUTH_VNODE_DELETE_CHILD | \ KAUTH_VNODE_WRITE_DATA | \ KAUTH_VNODE_APPEND_DATA | \ KAUTH_VNODE_DELETE | \ KAUTH_VNODE_WRITE_ATTRIBUTES | \ KAUTH_VNODE_WRITE_EXTATTRIBUTES | \ KAUTH_VNODE_WRITE_SECURITY | \ KAUTH_VNODE_TAKE_OWNERSHIP | \ KAUTH_VNODE_LINKTARGET | \ KAUTH_VNODE_CHECKIMMUTABLE) #endif /* KERNEL || <sys/acl.h> */ #ifdef KERNEL #include <sys/lock.h> /* lck_grp_t */ /* * Debugging * * XXX this wouldn't be necessary if we had a *real* debug-logging system. */ #if 0 # ifndef _FN_KPRINTF # define _FN_KPRINTF void kprintf(const char *fmt, ...) __printflike(1, 2); # endif /* !_FN_KPRINTF */ # define KAUTH_DEBUG_ENABLE # define K_UUID_FMT "%08x:%08x:%08x:%08x" # define K_UUID_ARG(_u) &_u.g_guid_asint[0],&_u.g_guid_asint[1],&_u.g_guid_asint[2],&_u.g_guid_asint[3] # define KAUTH_DEBUG(fmt, args...) do { kprintf("%s:%d: " fmt "\n", __PRETTY_FUNCTION__, __LINE__ , ##args); } while (0) # define KAUTH_DEBUG_CTX(_c) KAUTH_DEBUG("p = %p c = %p", _c->vc_proc, _c->vc_ucred) # define VFS_DEBUG(_ctx, _vp, fmt, args...) \ do { \ kprintf("%p '%s' %s:%d " fmt "\n", \ _ctx, \ (_vp != NULL && _vp->v_name != NULL) ? _vp->v_name : "????", \ __PRETTY_FUNCTION__, __LINE__ , \ ##args); \ } while(0) #else /* !0 */ # define KAUTH_DEBUG(fmt, args...) do { } while (0) # define VFS_DEBUG(ctx, vp, fmt, args...) do { } while(0) #endif /* !0 */ /* * Initialisation. */ #ifdef XNU_KERNEL_PRIVATE __BEGIN_DECLS extern lck_grp_t kauth_lck_grp; extern void kauth_init(void); /* * If you need accounting for KM_KAUTH consider using * KALLOC_HEAP_DEFINE to define a view. */ #define KM_KAUTH KHEAP_DEFAULT #if CONFIG_EXT_RESOLVER extern void kauth_resolver_identity_reset(void); #endif __END_DECLS #endif /* XNU_KERNEL_PRIVATE */ #endif /* KERNEL */ #endif /* __APPLE_API_EVOLVING */ #endif /* _SYS_KAUTH_H */ |