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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 | /* * Copyright (c) 2023 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@ */ #ifndef _NET_SOCKADDR_UTILS_H_ #define _NET_SOCKADDR_UTILS_H_ #ifdef XNU_KERNEL_PRIVATE #include <sys/socket.h> /* * Type conversion rules for socket address types * * 1. Context: * * XNU networking uses the "socket address" abstraction to represent * the addresses for the different protocol families, e.g. IPv4, IPv6, * UNIX domain sockets, ARP etc. * * Historically, the socket addresses were represented as a byte array, * starting with a uint16_t "family" discriminator. * * This was changed with the advent of XOpen UNIX standard: the uint16_t * "family" discriminator was split into 2 uint8_t fields: the length * and the protocol family. * * Since the different protocols have different addressing semantics, * the different addresses are represented by multiple structures. * For example, the IPv6 addresses are represented by `struct sockaddr_in6', * while the IPv4 addresses can be represented by `struct sockaddr_in' or by * `struct sockaddr_inifscope', depending on whether the address is bound * to a particular interface. * * The type `struct sockaddr' can be used interchangeably to represent any * of the above addresses. Essentially, the C types that represent * the different socket address families form a type hierarchy, * with the `struct sockaddr' being the root type. * * There are some exceptions to the hierarchy. Sometimes the socket addresses * are represented by a "container" type, e.g. `struct sockaddr_storage' * or `union sockaddr_in_4_6'. Finally, some protocol families, such as * the routing sockets, are represented by the plain `struct sockaddr'. * * * * +-------+ +-----------+ * +------------------+ Base | +. - - . - - . - - . |Containers | * | struct sockaddr +----+--+ . +-----------+ * +-----------------------+ | +----------------------------+ | * ^ . | union sockaddr_in_4_6 | . * +------------------+ +----------------------------+ | * | . +----------------------------+ . * | | | struct sockaddr_storage | | * | . +----------------------------+ . * | +----------+ | +----------------------------+ | * + . - - . - - . - + - .| Concrete | . | uint8_t * __bidi_indexable | . * . +----------+ | +----------------------------+ | * | +---------------------------+ | . . * . | struct sockaddr_ctl | . +. - - . - - . - - . - - . - - . + * | +---------------------------+ | * . +---------------------------+ . * | | struct sockaddr_dl | | * . +---------------------------+ . * | +---------------------------+ | * . | struct sockaddr_in | . * | +---------------------------+ | * . +---------------------------+ . * | | struct sockaddr_inarp | | * . +---------------------------+ . * | +---------------------------+ | * . | struct sockaddr_inifscope | . * | +---------------------------+ | * . +---------------------------+ . * | | struct sockaddr_in6 | | * . +---------------------------+ . * | +---------------------------+ | * . | struct sockaddr_ndrv | . * | +---------------------------+ | * . +---------------------------+ . * | | struct sockaddr_sys | | * . +---------------------------+ . * | +---------------------------+ | * . | struct sockaddr_un | . * | +---------------------------+ | * . . * + . - - . - - . - - . - - . - - .+ * * * 2. Challenges * * 2.1. Type safety challenges * * Since the pointer type `struct sockaddr *' can represent a pointer * to any concrete derived type, or to a container type, * the enforcement of bound checks can be tricky. * * In particular, one needs to safely support the following conversions: * * - From `struct sockaddr *' to any of the derived types, and vice versa. * - From `uint8_t *' to any of the derived types, and vice versa. * - From `union sockaddr_in_4_6 *' to either `struct sockaddr_in *' * or to `struct sockaddr_in6 *', and vice versa. * - From `struct sockaddr_in *' to `struct sockaddr_inifscope *', * and vice versa. * * At the same time, the system needs to make accidental conversions between * unrelated types difficult. Examples of such conversions include: * * - From `struct sockaddr_in *' to `struct sockaddr_un *' or vice versa. * - From `struct sockaddr_sys *' to `struct sockaddr_ndrv *' or vice versa. * * 2.2. ABI constraints. * * The concrete types that are listed above are used both in the kernel space, * the user space and by the drivers. * * 2.3. Pointer boundary challenges * * The transition between `__single' pointers, e.g. between * `struct sockaddr * __single' to `struct sockaddr_in6 * __single' * is currently assumed to be safe, as long as the concrete types * have determined sizes. * * The challenge occurs whenever one needs to serialize or to deserialize * the concrete socket address types into a byte arrays. * * 2.4. Runtime cost challenges * * The transition between the different socket address types * should not incure a significant CPU or memory cost in runtime. * * * 3. Implementation. * * This file implements a mechanism that: * - Enforces the type safety by ensuring that only the valid * type conversions can be made. * - Ensures the ABI compatibility for the socket address types. * - Implements the conversion between the socket address types * and the container types (including byte arrays) in a way * that allows enforcing the boundary checks. * - Does not have a significant runtime impact. * * To achive that, the mechanism relies on the C generic dispatch * mechanism, which allows converting variables to and from * the desired types. * * * 4. Usage. * * In order to use the sockaddr_utils, the implementation * code needs to include this file *after* including the files * which define the relevant sockaddr structures. * * For example: * * #include <netinet/in.h> * #include <netinet/in_private.h> * #include <net/sockaddr_utils.h> * * * Doing so will redefine the canonical macros such as `SA(s)` * and will allow for mostly seamless adoption. * * Once the adoption is mostly complete, * this file can be included in the "private" versions * of the header files, such as <netinet/in_private.h> */ #define __NET_SOCKADDR_UTILS_H_INCLUDED #include <net/strict_type_cnv_private.h> #undef __NET_SOCKADDR_UTILS_H_INCLUDED #include <net/if_dl.h> #include <sys/un.h> #include <net/ndrv.h> #include <netinet/in_private.h> #include <netinet/if_ether.h> #include <net/necp.h> /* * Building blocks for the cast operations */ /* * Generic static cast for sockaddr subtypes. * * Defines a static cast expression that, given the expression EXPR * and the destination type DST_TYPENAME will: * 0. If EXPR represents a byte array, attempt to convert EXPR * to DST_TYPENAME. * 1. If EXPR is compatible with `struct DST_TYPENAME *': return EXPR. * 2. If EXPR is compatible with `struct sockaddr *', perform type conversion * from `struct sockaddr *' to `struct DST_TYPENAME *' * 3. If EXPR is compatible with `struct sockaddr_storage *', * perform type conversion from `struct sockaddr_storage *' * to `struct DST_TYPENAME *'. * 4. If additional conversions are enabled, attempt to apply those * to the EXPR, and if successful, return the result of conversion. * * NOTE: The static cast preserves the CV qualifiers. */ #define __SA_UTILS_STATIC_CAST(EXPR, DST_TYPENAME, ...) _Generic((EXPR), \ __STC_BYTES_TO_OBJ_CNV_CLAUSE(DST_TYPENAME), /* [0] */ \ __STC_IDENTITY_CNV_CLAUSE(struct, DST_TYPENAME), /* [1] */ \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr, DST_TYPENAME), /* [2] */ \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_storage, DST_TYPENAME), /* [3] */ \ ##__VA_ARGS__ /* [4] */ \ )((EXPR)) /* * Generic const cast for sockaddr subtypes. * * Defines a const cast expression that, given the expression EXPR * and the destination type DST_TYPENAME will: * 0. If EXPR is compatible with `const struct DST_TYPENAME *': * deconst EXPR and return the result. * 1. If EXPR is compatible with `const struct sockaddr s*': * convert EXPR to `const struct DST_TYPENAME *' and return deconsted result. * 2. If EXPR is compatible with `const struct sockaddr_storage *': * convert EXPR to `const struct DST_TYPENAME* ' and return deconsted result. * 3. If additional conversions are enabled, attempt to apply those * to the EXPR, and if successful, return the result of conversion. * * NOTE: The static cast preserves the CV qualifiers. */ #define __SA_UTILS_DECONST_CAST(EXPR, DST_TYPENAME, ...) _Generic((EXPR), \ __STC_CONST_IDENTITY_CNV_CLAUSE(struct, DST_TYPENAME), /* [0] */ \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr, DST_TYPENAME), /* [1] */ \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_storage, DST_TYPENAME), /* [2] */ \ ##__VA_ARGS__ /* [3] */ \ )((EXPR)) /* * Strict replacement for struct sockaddr */ /* Register the base types: struct sockaddr and struct sockaddr_storage */ __STC_DEFINE_SELF_CONVERTERS(struct, sockaddr); __STC_DEFINE_OBJECT_CONVERTERS(struct, sockaddr, struct, sockaddr_storage); __STC_DEFINE_OBJECT_CONVERTERS(struct, sockaddr, union, sockaddr_in_4_6); __STC_DEFINE_OBJECT_CONVERTERS(struct, sockaddr, union, necp_sockaddr_union); __STC_DEFINE_BYTE_TO_OBJ_CNVS(struct, sockaddr, 2, 255); __STC_DEFINE_SELF_CONVERTERS(struct, sockaddr_storage); __STC_DEFINE_BYTE_TO_OBJ_CNVS(struct, sockaddr_storage, sizeof(struct sockaddr_storage), sizeof(struct sockaddr_storage)); __STC_DEFINE_BYTE_TO_OBJ_CNVS(union, sockaddr_in_4_6, sizeof(union sockaddr_in_4_6), sizeof(union sockaddr_in_4_6)); __STC_DEFINE_BYTE_TO_OBJ_CNVS(union, necp_sockaddr_union, sizeof(union necp_sockaddr_union), sizeof(union necp_sockaddr_union)); /************************************************************************************************* * Generic converter to bytes. */ #define __SA_UTILS_CONV_TO_BYTES(X) _Generic((X), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(struct, sockaddr), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(struct, sockaddr_storage), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(union, sockaddr_in_4_6), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(union, necp_sockaddr_union), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(struct, sockaddr_ctl), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(struct, sockaddr_dl), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(struct, sockaddr_in), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(struct, sockaddr_in6), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(struct, sockaddr_inarp), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(struct, sockaddr_inifscope), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(struct, sockaddr_ndrv), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(struct, sockaddr_sys), \ __STC_OBJ_TO_BYTES_CNV_CLAUSE(struct, sockaddr_un), \ __STC_BYTES_TO_BYTES_CNV_CLAUSE() \ )((X)) /************************************************************************************************* * Converters to `struct sockaddr *' */ #define __SA_UTILS_CONV_TO_SOCKADDR(X) _Generic((X), \ __STC_BYTES_TO_OBJ_CNV_CLAUSE(sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_storage, sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(union, sockaddr_in_4_6, sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(union, necp_sockaddr_union, sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_ctl, sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_dl, sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_in, sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_in6, sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_inarp, sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_inifscope, sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_ndrv, sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_sys, sockaddr), \ __STC_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_un, sockaddr), \ __STC_IDENTITY_CNV_CLAUSE(struct, sockaddr) \ )((X)) #define __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR(X) _Generic((X), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_storage, sockaddr), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(union, sockaddr_in_4_6, sockaddr), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(union, necp_sockaddr_union, sockaddr), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_ctl, sockaddr), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_dl, sockaddr), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_in, sockaddr), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_in6, sockaddr), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_inarp, sockaddr), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_inifscope, sockaddr), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_ndrv, sockaddr), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_sys, sockaddr), \ __STC_CONST_TYPE_TO_OBJ_CNV_CLAUSE(struct, sockaddr_un, sockaddr), \ __STC_CONST_IDENTITY_CNV_CLAUSE(struct, sockaddr) \ )((X)) #if defined(SA) #undef SA #endif /* defined(SA) */ #define SA(s) __SA_UTILS_CONV_TO_SOCKADDR((s)) #define __DECONST_SA(s) __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR((s)) #define SA_BYTES(s) __SA_UTILS_CONV_TO_BYTES(s) /************************************************************************************************* * Replacements for `bcopy', `bcmp' and `bzero'. */ #define SOCKADDR_COPY(SRC, DST, LEN) do { \ const uint8_t* __sau_sbytes = __SA_UTILS_CONV_TO_BYTES((SRC)); \ uint8_t* __sau_dbytes = __SA_UTILS_CONV_TO_BYTES((DST)); \ bcopy(__sau_sbytes, __sau_dbytes, (LEN)); \ } while(0) #define SOCKADDR_ZERO(SRC, LEN) do { \ uint8_t* __sau_src_bytes = __SA_UTILS_CONV_TO_BYTES((SRC)); \ bzero(__sau_src_bytes, (LEN)); \ } while(0) #define SOCKADDR_CMP(LH, RH, LEN) ({ \ int __sac_rv = 0; \ const uint8_t* __sau_lhb = __SA_UTILS_CONV_TO_BYTES((LH)); \ const uint8_t* __sau_rhb = __SA_UTILS_CONV_TO_BYTES((RH)); \ __sac_rv = bcmp(__sau_lhb, __sau_rhb, (LEN)); \ __sac_rv; \ }) /************************************************************************************************* * Strict replacement for `struct sockaddr_ctl *' */ __SA_UTILS_DEFINE_FIXED_SIZE_SUBTYPE(struct, sockaddr_ctl) #define __SA_UTILS_CONV_TO_SOCKADDR_CTL(X) __SA_UTILS_STATIC_CAST(X, sockaddr_ctl) #define __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_CTL(X) __SA_UTILS_DECONST_CAST(X, sockaddr_ctl) #define SCTL(s) __SA_UTILS_CONV_TO_SOCKADDR_CTL((s)) #define __DECONST_SCTL(s) __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_CTL((s)) /************************************************************************************************* * Strict replacement for `struct sockaddr_dl *' */ __SA_UTILS_DEFINE_VARIABLE_SIZE_SUBTYPE(struct, sockaddr_dl) #define __SA_UTILS_CONV_TO_SOCKADDR_DL(X) __SA_UTILS_STATIC_CAST(X, sockaddr_dl) #define __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_DL(X) __SA_UTILS_DECONST_CAST (X, sockaddr_dl) #if defined(SDL) #undef SDL #endif /* defined(SDL) */ #define SDL(s) __SA_UTILS_CONV_TO_SOCKADDR_DL((s)) #define __DECONST_SDL(s) __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_DL((s)) #if defined(LLADDR) #undef LLADDR #endif /* defined(LLADDR) */ #define LLADDR(s) ((caddr_t)(__SA_UTILS_CONV_TO_BYTES((s)) + __offsetof(struct sockaddr_dl, sdl_data) + (s)->sdl_nlen)) #if defined(CONST_LLADDR) #undef CONST_LLADDR #endif /* defined(CONST_LLADDR) */ #define CONST_LLADDR(s) ((const uint8_t *)LLADDR((s))) /************************************************************************************************* * Strict replacement for `struct sockaddr_in *' */ __SA_UTILS_DEFINE_FIXED_SIZE_SUBTYPE(struct, sockaddr_in, \ union, sockaddr_in_4_6, \ union, necp_sockaddr_union) #define __SA_UTILS_CONV_TO_SOCKADDR_IN(X) \ __SA_UTILS_STATIC_CAST(X, sockaddr_in, \ __STC_ENABLE_STATIC_CAST(union, sockaddr_in_4_6, sockaddr_in), \ __STC_ENABLE_STATIC_CAST(union, necp_sockaddr_union, sockaddr_in)) #define __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_IN(X) \ __SA_UTILS_DECONST_CAST (X, sockaddr_in, \ __STC_ENABLE_DECONST_CAST(union, sockaddr_in_4_6, sockaddr_in), \ __STC_ENABLE_DECONST_CAST(union, necp_sockaddr_union, sockaddr_in)) #if defined(SIN) #undef SIN #endif /* defined(SIN) */ #define SIN(s) __SA_UTILS_CONV_TO_SOCKADDR_IN((s)) #define __DECONST_SIN(s) __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_IN((s)) #if defined(satosin) #undef satosin #endif /* defined(satosin) */ #define satosin(sa) SIN(sa) #if defined(sintosa) #undef sintosa #endif /* defined(sintosa) */ #define sintosa(sin) SA(sin) /************************************************************************************************* * Strict replacement for `struct sockaddr_inarp *' */ __SA_UTILS_DEFINE_FIXED_SIZE_SUBTYPE(struct, sockaddr_inarp) #define __SA_UTILS_CONV_TO_SOCKADDR_INARP(X) \ __SA_UTILS_STATIC_CAST(X, sockaddr_inarp) #define __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_INARP(X) \ __SA_UTILS_DECONST_CAST(X, sockaddr_inarp) #define SINARP(s) __SA_UTILS_CONV_TO_SOCKADDR_INARP((s)) #define __DECONST_SINARP(s) __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_INARP((s)) /************************************************************************************************* * Strict replacement for `struct sockaddr_inifscope *' */ __SA_UTILS_DEFINE_FIXED_SIZE_SUBTYPE(struct, sockaddr_inifscope, \ union, sockaddr_in_4_6, \ union, necp_sockaddr_union) #define __SA_UTILS_CONV_TO_SOCKADDR_INIFSCOPE(X) \ __SA_UTILS_STATIC_CAST(X, sockaddr_inifscope, \ __STC_ENABLE_STATIC_CAST(union, sockaddr_in_4_6, sockaddr_inifscope), \ __STC_ENABLE_STATIC_CAST(union, necp_sockaddr_union, sockaddr_inifscope)) #define __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_INIFSCOPE(X) \ __SA_UTILS_DECONST_CAST(X, sockaddr_inifscope, \ __STC_ENABLE_DECONST_CAST(union, sockaddr_in_4_6, sockaddr_inifscope), \ __STC_ENABLE_DECONST_CAST(union, necp_sockaddr_union, sockaddr_inifscope)) #if defined(SINIFSCOPE) #undef SINIFSCOPE #endif /* defined(SINIFSCOPE) */ #define SINIFSCOPE(s) __SA_UTILS_CONV_TO_SOCKADDR_INIFSCOPE((s)) #define __DECONST_SINIFSCOPE(s) __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_INIFSCOPE((s)) /************************************************************************************************* * Strict replacement for `struct sockaddr_in6 *' */ __SA_UTILS_DEFINE_FIXED_SIZE_SUBTYPE(struct, sockaddr_in6, \ union, sockaddr_in_4_6, \ union, necp_sockaddr_union) #define __SA_UTILS_CONV_TO_SOCKADDR_IN6(X) \ __SA_UTILS_STATIC_CAST(X, sockaddr_in6, \ __STC_ENABLE_STATIC_CAST(union, sockaddr_in_4_6, sockaddr_in6), \ __STC_ENABLE_STATIC_CAST(union, necp_sockaddr_union, sockaddr_in6)) #define __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_IN6(X) \ __SA_UTILS_DECONST_CAST(X, sockaddr_in6, \ __STC_ENABLE_DECONST_CAST(union, sockaddr_in_4_6, sockaddr_in6), \ __STC_ENABLE_DECONST_CAST(union, necp_sockaddr_union, sockaddr_in6)) #if defined(SIN6) #undef SIN6 #endif /* defined(SIN6) */ #define SIN6(s) __SA_UTILS_CONV_TO_SOCKADDR_IN6((s)) #define __DECONST_SIN6(s) __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_IN6((s)) #if defined(satosin6) #undef satosin6 #endif /* defined(satosin6) */ #define satosin6(sa) SIN6(sa) #if defined(sin6tosa) #undef sin6tosa #endif /* defined(sin6tosa) */ #define sin6tosa(sin6) SA((sin6)) #if defined(SIN6IFSCOPE) #undef SIN6IFSCOPE #endif /* defined(SIN6IFSCOPE) */ #define SIN6IFSCOPE(s) SIN6(s) /************************************************************************************************* * Strict replacement for `struct sockaddr_ndrv *' */ __SA_UTILS_DEFINE_FIXED_SIZE_SUBTYPE(struct, sockaddr_ndrv) #define __SA_UTILS_CONV_TO_SOCKADDR_NDRV(X) \ __SA_UTILS_STATIC_CAST(X, sockaddr_ndrv) #define __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_NDRV(X) \ __SA_UTILS_DECONST_CAST(X, sockaddr_ndrv) #define SNDRV(s) __SA_UTILS_CONV_TO_SOCKADDR_NDRV((s)) #define __DECONST_SNDRV(s) __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_NDRV((s)) /************************************************************************************************* * Strict replacement for `struct sockaddr_sys *' */ __SA_UTILS_DEFINE_FIXED_SIZE_SUBTYPE(struct, sockaddr_sys) #define __SA_UTILS_CONV_TO_SOCKADDR_SYS(X) \ __SA_UTILS_STATIC_CAST(X, sockaddr_sys) #define __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_SYS(X) \ __SA_UTILS_DECONST_CAST(X, sockaddr_sys) #define SSYS(s) __SA_UTILS_CONV_TO_SOCKADDR_SYS((s)) #define __DECONST_SSYS(s) __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_SYS((s)) /************************************************************************************************* * Strict replacement for `struct sockaddr_un *' */ __SA_UTILS_DEFINE_VARIABLE_SIZE_SUBTYPE(struct, sockaddr_un) #define __SA_UTILS_CONV_TO_SOCKADDR_UN(X) \ __SA_UTILS_STATIC_CAST(X, sockaddr_un) #define __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_UN(X) \ __SA_UTILS_DECONST_CAST(X, sockaddr_un) #define SUN(s) __SA_UTILS_CONV_TO_SOCKADDR_UN((s)) #define __DECONST_SUN(s) __SA_UTILS_DECONST_AND_CONV_TO_SOCKADDR_UN((s)) #endif /* XNU_KERNEL_PRIVATE */ #endif /* _NET_SOCKADDR_UTILS_H_ */ |