1 /* 2 * Copyright (c) 2000-2022 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ 29 /*- 30 * Copyright (c) 1983, 1990, 1993 31 * The Regents of the University of California. All rights reserved. 32 * (c) UNIX System Laboratories, Inc. 33 * All or some portions of this file are derived from material licensed 34 * to the University of California by American Telephone and Telegraph 35 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 36 * the permission of UNIX System Laboratories, Inc. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)fcntl.h 8.3 (Berkeley) 1/21/94 67 */ 68 69 70 #ifndef _SYS_FCNTL_H_ 71 #define _SYS_FCNTL_H_ 72 73 /* 74 * This file includes the definitions for open and fcntl 75 * described by POSIX for <fcntl.h>; it also includes 76 * related kernel definitions. 77 */ 78 #include <sys/_types.h> 79 #include <sys/cdefs.h> 80 #ifndef KERNEL 81 #include <Availability.h> 82 #endif 83 84 /* We should not be exporting size_t here. Temporary for gcc bootstrapping. */ 85 #include <sys/_types/_size_t.h> 86 #include <sys/_types/_mode_t.h> 87 #include <sys/_types/_off_t.h> 88 #include <sys/_types/_pid_t.h> 89 90 /* 91 * File status flags: these are used by open(2), fcntl(2). 92 * They are also used (indirectly) in the kernel file structure f_flags, 93 * which is a superset of the open/fcntl flags. Open flags and f_flags 94 * are inter-convertible using OFLAGS(fflags) and FFLAGS(oflags). 95 * Open/fcntl flags begin with O_; kernel-internal flags begin with F. 96 */ 97 /* open-only flags */ 98 #define O_RDONLY 0x0000 /* open for reading only */ 99 #define O_WRONLY 0x0001 /* open for writing only */ 100 #define O_RDWR 0x0002 /* open for reading and writing */ 101 #define O_ACCMODE 0x0003 /* mask for above modes */ 102 103 /* 104 * Kernel encoding of open mode; separate read and write bits that are 105 * independently testable: 1 greater than the above. 106 * 107 * XXX 108 * FREAD and FWRITE are excluded from the #ifdef KERNEL so that TIOCFLUSH, 109 * which was documented to use FREAD/FWRITE, continues to work. 110 */ 111 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 112 #define FREAD 0x00000001 113 #define FWRITE 0x00000002 114 #endif 115 #define O_NONBLOCK 0x00000004 /* no delay */ 116 #define O_APPEND 0x00000008 /* set append mode */ 117 118 #include <sys/_types/_o_sync.h> 119 120 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 121 #define O_SHLOCK 0x00000010 /* open with shared file lock */ 122 #define O_EXLOCK 0x00000020 /* open with exclusive file lock */ 123 #define O_ASYNC 0x00000040 /* signal pgrp when data ready */ 124 #define O_FSYNC O_SYNC /* source compatibility: do not use */ 125 #define O_NOFOLLOW 0x00000100 /* don't follow symlinks */ 126 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 127 #define O_CREAT 0x00000200 /* create if nonexistant */ 128 #define O_TRUNC 0x00000400 /* truncate to zero length */ 129 #define O_EXCL 0x00000800 /* error if already exists */ 130 #ifdef KERNEL 131 #define FMARK 0x00001000 /* mark during gc() */ 132 #define FDEFER 0x00002000 /* defer for next gc pass */ 133 #define FWASLOCKED 0x00004000 /* has or has had an advisory fcntl lock */ 134 #define FHASLOCK FWASLOCKED /* obsolete compatibility name */ 135 #endif 136 137 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 138 #define O_EVTONLY 0x00008000 /* descriptor requested for event notifications only */ 139 #endif 140 141 #ifdef KERNEL 142 #define FWASWRITTEN 0x00010000 /* descriptor was written */ 143 #endif 144 145 #define O_NOCTTY 0x00020000 /* don't assign controlling terminal */ 146 147 #ifdef KERNEL 148 #define FNOCACHE 0x00040000 /* fcntl(F_NOCACHE, 1) */ 149 #define FNORDAHEAD 0x00080000 /* fcntl(F_RDAHEAD, 0) */ 150 #endif 151 152 #if __DARWIN_C_LEVEL >= 200809L 153 #define O_DIRECTORY 0x00100000 154 #endif 155 156 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 157 #define O_SYMLINK 0x00200000 /* allow open of a symlink */ 158 #endif 159 160 // O_DSYNC 0x00400000 /* synch I/O data integrity */ 161 #include <sys/_types/_o_dsync.h> 162 163 #ifdef KERNEL 164 #define FNODIRECT 0x00800000 /* fcntl(F_NODIRECT, 1) */ 165 #endif 166 167 #if __DARWIN_C_LEVEL >= 200809L 168 #define O_CLOEXEC 0x01000000 /* implicitly set FD_CLOEXEC */ 169 #endif 170 171 #ifdef KERNEL 172 #define FENCRYPTED 0x02000000 173 #define FSINGLE_WRITER 0x04000000 /* fcntl(F_SINGLE_WRITER, 1) */ 174 #define O_CLOFORK 0x08000000 /* implicitly set FD_CLOFORK */ 175 #define FUNENCRYPTED 0x10000000 176 #endif 177 178 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 179 #define O_NOFOLLOW_ANY 0x20000000 /* no symlinks allowed in path */ 180 #endif 181 182 #if __DARWIN_C_LEVEL >= 200809L 183 #define O_EXEC 0x40000000 /* open file for execute only */ 184 #define O_SEARCH (O_EXEC | O_DIRECTORY) /* open directory for search only */ 185 #endif 186 187 #ifdef KERNEL 188 #define FEXEC O_EXEC 189 #define FSEARCH FEXEC 190 #endif 191 192 #ifdef KERNEL 193 /* End of File status flags (fileglob::fg_flag) */ 194 #endif 195 196 #if __DARWIN_C_LEVEL >= 200809L 197 /* 198 * Descriptor value for the current working directory 199 */ 200 #define AT_FDCWD -2 201 202 /* 203 * Flags for the at functions 204 */ 205 #define AT_EACCESS 0x0010 /* Use effective ids in access check */ 206 #define AT_SYMLINK_NOFOLLOW 0x0020 /* Act on the symlink itself not the target */ 207 #define AT_SYMLINK_FOLLOW 0x0040 /* Act on target of symlink */ 208 #define AT_REMOVEDIR 0x0080 /* Path refers to directory */ 209 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 210 #ifdef PRIVATE 211 #define AT_REMOVEDIR_DATALESS 0x0100 /* Remove a dataless directory without materializing first */ 212 #endif 213 #define AT_REALDEV 0x0200 /* Return real device inodes resides on for fstatat(2) */ 214 #define AT_FDONLY 0x0400 /* Use only the fd and Ignore the path for fstatat(2) */ 215 #define AT_SYMLINK_NOFOLLOW_ANY 0x0800 /* Path should not contain any symlinks */ 216 #ifdef PRIVATE 217 #define AT_SYSTEM_DISCARDED 0x1000 /* Indicated file/folder was discarded by system */ 218 #endif 219 #endif 220 #endif 221 222 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 223 /* Data Protection Flags */ 224 #define O_DP_GETRAWENCRYPTED 0x0001 225 #define O_DP_GETRAWUNENCRYPTED 0x0002 226 #define O_DP_AUTHENTICATE 0x0004 227 228 /* Descriptor value for openat_authenticated_np() to skip authentication with another fd */ 229 #define AUTH_OPEN_NOAUTHFD -1 230 #endif 231 232 233 #ifdef KERNEL 234 /* convert from open() flags to/from fflags; convert O_RD/WR to FREAD/FWRITE */ 235 /* O_EXEC turns off FREAD/FWRITE */ 236 #define FFLAGS(oflags) (((oflags) & O_EXEC) ? ((oflags) & ~(O_ACCMODE)) : ((oflags) + 1)) 237 /* There is no way to convey a lack of O_RDONLY but the presence of O_EXEC means that */ 238 #define OFLAGS(fflags) (((fflags) & FEXEC) ? ((fflags) & ~(O_ACCMODE)) : ((fflags) - 1)) 239 240 /* bits to save after open */ 241 #define FMASK (FREAD|FWRITE|FAPPEND|FASYNC|FFSYNC|FFDSYNC|FNONBLOCK|FEXEC) 242 /* bits settable by fcntl(F_SETFL, ...) */ 243 #define FCNTLFLAGS (FAPPEND|FASYNC|FFSYNC|FFDSYNC|FNONBLOCK) 244 #endif 245 246 /* 247 * The O_* flags used to have only F* names, which were used in the kernel 248 * and by fcntl. We retain the F* names for the kernel f_flags field 249 * and for backward compatibility for fcntl. 250 */ 251 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 252 #define FAPPEND O_APPEND /* kernel/compat */ 253 #define FASYNC O_ASYNC /* kernel/compat */ 254 #define FFSYNC O_FSYNC /* kernel */ 255 #define FFDSYNC O_DSYNC /* kernel */ 256 #define FNONBLOCK O_NONBLOCK /* kernel */ 257 #define FNDELAY O_NONBLOCK /* compat */ 258 #define O_NDELAY O_NONBLOCK /* compat */ 259 #endif 260 261 /* 262 * Flags used for copyfile(2) 263 */ 264 265 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 266 #define CPF_OVERWRITE 0x0001 267 #define CPF_IGNORE_MODE 0x0002 268 #define CPF_MASK (CPF_OVERWRITE|CPF_IGNORE_MODE) 269 #endif 270 271 /* 272 * Constants used for fcntl(2) 273 */ 274 275 /* command values */ 276 #define F_DUPFD 0 /* duplicate file descriptor */ 277 #define F_GETFD 1 /* get file descriptor flags */ 278 #define F_SETFD 2 /* set file descriptor flags */ 279 #define F_GETFL 3 /* get file status flags */ 280 #define F_SETFL 4 /* set file status flags */ 281 #define F_GETOWN 5 /* get SIGIO/SIGURG proc/pgrp */ 282 #define F_SETOWN 6 /* set SIGIO/SIGURG proc/pgrp */ 283 #define F_GETLK 7 /* get record locking information */ 284 #define F_SETLK 8 /* set record locking information */ 285 #define F_SETLKW 9 /* F_SETLK; wait if blocked */ 286 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 287 #define F_SETLKWTIMEOUT 10 /* F_SETLK; wait if blocked, return on timeout */ 288 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */ 289 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 290 #define F_FLUSH_DATA 40 291 #define F_CHKCLEAN 41 /* Used for regression test */ 292 #define F_PREALLOCATE 42 /* Preallocate storage */ 293 #define F_SETSIZE 43 /* Truncate a file. Equivalent to calling truncate(2) */ 294 #define F_RDADVISE 44 /* Issue an advisory read async with no copy to user */ 295 #define F_RDAHEAD 45 /* turn read ahead off/on for this fd */ 296 /* 297 * 46,47 used to be F_READBOOTSTRAP and F_WRITEBOOTSTRAP 298 */ 299 #define F_NOCACHE 48 /* turn data caching off/on for this fd */ 300 #define F_LOG2PHYS 49 /* file offset to device offset */ 301 #define F_GETPATH 50 /* return the full path of the fd */ 302 #define F_FULLFSYNC 51 /* fsync + ask the drive to flush to the media */ 303 #define F_PATHPKG_CHECK 52 /* find which component (if any) is a package */ 304 #define F_FREEZE_FS 53 /* "freeze" all fs operations */ 305 #define F_THAW_FS 54 /* "thaw" all fs operations */ 306 #define F_GLOBAL_NOCACHE 55 /* turn data caching off/on (globally) for this file */ 307 308 #ifdef PRIVATE 309 #define F_OPENFROM 56 /* SPI: open a file relative to fd (must be a dir) */ 310 #define F_UNLINKFROM 57 /* SPI: open a file relative to fd (must be a dir) */ 311 #define F_CHECK_OPENEVT 58 /* SPI: if a process is marked OPENEVT, or in O_EVTONLY on opens of this vnode */ 312 #endif /* PRIVATE */ 313 314 #define F_ADDSIGS 59 /* add detached signatures */ 315 316 #ifdef PRIVATE 317 /* Deprecated/Removed in 10.9 */ 318 #define F_MARKDEPENDENCY 60 /* this process hosts the device supporting the fs backing this fd */ 319 #endif 320 321 #define F_ADDFILESIGS 61 /* add signature from same file (used by dyld for shared libs) */ 322 323 #define F_NODIRECT 62 /* used in conjunction with F_NOCACHE to indicate that DIRECT, synchonous writes */ 324 /* should not be used (i.e. its ok to temporaily create cached pages) */ 325 326 #define F_GETPROTECTIONCLASS 63 /* Get the protection class of a file from the EA, returns int */ 327 #define F_SETPROTECTIONCLASS 64 /* Set the protection class of a file for the EA, requires int */ 328 329 #define F_LOG2PHYS_EXT 65 /* file offset to device offset, extended */ 330 331 #define F_GETLKPID 66 /* See man fcntl(2) F_GETLK 332 * Similar to F_GETLK but in addition l_pid is treated as an input parameter 333 * which is used as a matching value when searching locks on the file 334 * so that only locks owned by the process with pid l_pid are returned. 335 * However, any flock(2) type lock will also be found with the returned value 336 * of l_pid set to -1 (as with F_GETLK). 337 */ 338 339 /* See F_DUPFD_CLOEXEC below for 67 */ 340 341 #ifdef PRIVATE 342 #define F_SETSTATICCONTENT 68 /* 343 * indicate to the filesystem/storage driver that the content to be 344 * written is usually static. a nonzero value enables it, 0 disables it. 345 */ 346 #define F_MOVEDATAEXTENTS 69 /* Swap only the data associated with two files */ 347 #endif 348 349 #define F_SETBACKINGSTORE 70 /* Mark the file as being the backing store for another filesystem */ 350 #define F_GETPATH_MTMINFO 71 /* return the full path of the FD, but error in specific mtmd circumstances */ 351 352 #define F_GETCODEDIR 72 /* Returns the code directory, with associated hashes, to the caller */ 353 354 #define F_SETNOSIGPIPE 73 /* No SIGPIPE generated on EPIPE */ 355 #define F_GETNOSIGPIPE 74 /* Status of SIGPIPE for this fd */ 356 357 #define F_TRANSCODEKEY 75 /* For some cases, we need to rewrap the key for AKS/MKB */ 358 359 #define F_SINGLE_WRITER 76 /* file being written to a by single writer... if throttling enabled, writes */ 360 /* may be broken into smaller chunks with throttling in between */ 361 362 #define F_GETPROTECTIONLEVEL 77 /* Get the protection version number for this filesystem */ 363 364 #define F_FINDSIGS 78 /* Add detached code signatures (used by dyld for shared libs) */ 365 366 #ifdef PRIVATE 367 #define F_GETDEFAULTPROTLEVEL 79 /* Get the default protection level for the filesystem */ 368 #define F_MAKECOMPRESSED 80 /* Make the file compressed; truncate & toggle BSD bits */ 369 #define F_SET_GREEDY_MODE 81 /* 370 * indicate to the filesystem/storage driver that the content to be 371 * written should be written in greedy mode for additional speed at 372 * the cost of storage efficiency. A nonzero value enables it, 0 disables it. 373 */ 374 375 #define F_SETIOTYPE 82 /* 376 * Use parameters to describe content being written to the FD. See 377 * flag definitions below for argument bits. 378 */ 379 #endif 380 381 #define F_ADDFILESIGS_FOR_DYLD_SIM 83 /* Add signature from same file, only if it is signed by Apple (used by dyld for simulator) */ 382 383 #ifdef PRIVATE 384 #define F_RECYCLE 84 /* Recycle vnode; debug/development builds only */ 385 #endif 386 387 #define F_BARRIERFSYNC 85 /* fsync + issue barrier to drive */ 388 389 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 390 #define F_OFD_SETLK 90 /* Acquire or release open file description lock */ 391 #define F_OFD_SETLKW 91 /* (as F_OFD_SETLK but blocking if conflicting lock) */ 392 #define F_OFD_GETLK 92 /* Examine OFD lock */ 393 394 #define F_OFD_SETLKWTIMEOUT 93 /* (as F_OFD_SETLKW but return if timeout) */ 395 #endif 396 397 #ifdef PRIVATE 398 #define F_OFD_GETLKPID 94 /* get record locking information */ 399 400 #define F_SETCONFINED 95 /* "confine" OFD to process */ 401 #define F_GETCONFINED 96 /* is-fd-confined? */ 402 #endif 403 404 #define F_ADDFILESIGS_RETURN 97 /* Add signature from same file, return end offset in structure on success */ 405 #define F_CHECK_LV 98 /* Check if Library Validation allows this Mach-O file to be mapped into the calling process */ 406 407 #define F_PUNCHHOLE 99 /* Deallocate a range of the file */ 408 409 #define F_TRIM_ACTIVE_FILE 100 /* Trim an active file */ 410 411 #define F_SPECULATIVE_READ 101 /* Asynchronous advisory read fcntl for regular and compressed file */ 412 413 #define F_GETPATH_NOFIRMLINK 102 /* return the full path without firmlinks of the fd */ 414 415 #define F_ADDFILESIGS_INFO 103 /* Add signature from same file, return information */ 416 #define F_ADDFILESUPPL 104 /* Add supplemental signature from same file with fd reference to original */ 417 #define F_GETSIGSINFO 105 /* Look up code signature information attached to a file or slice */ 418 419 #define F_SETLEASE 106 /* Acquire or release lease */ 420 #define F_GETLEASE 107 /* Retrieve lease information */ 421 422 #define F_SETLEASE_ARG(t, oc) ((t) | ((oc) << 2)) 423 424 #ifdef PRIVATE 425 #define F_ASSERT_BG_ACCESS 108 /* Assert background access to a file */ 426 #define F_RELEASE_BG_ACCESS 109 /* Release background access to a file */ 427 #endif // PRIVATE 428 429 #define F_TRANSFEREXTENTS 110 /* Transfer allocated extents beyond leof to a different file */ 430 431 #define F_ATTRIBUTION_TAG 111 /* Based on flags, query/set/delete a file's attribution tag */ 432 #if PRIVATE 433 #define F_NOCACHE_EXT 112 /* turn data caching off/on for this fd and relax size and alignment restrictions for write */ 434 #endif 435 436 #define F_ADDSIGS_MAIN_BINARY 113 /* add detached signatures for main binary -- development only */ 437 438 // FS-specific fcntl()'s numbers begin at 0x00010000 and go up 439 #define FCNTL_FS_SPECIFIC_BASE 0x00010000 440 441 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 442 443 #if __DARWIN_C_LEVEL >= 200809L 444 #define F_DUPFD_CLOEXEC 67 /* mark the dup with FD_CLOEXEC */ 445 #endif 446 447 /* file descriptor flags (F_GETFD, F_SETFD) */ 448 #define FD_CLOEXEC 1 /* close-on-exec flag */ 449 #if PRIVATE 450 #define FD_CLOFORK 2 /* close-on-fork flag */ 451 #endif 452 453 /* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */ 454 #define F_RDLCK 1 /* shared or read lock */ 455 #define F_UNLCK 2 /* unlock */ 456 #define F_WRLCK 3 /* exclusive or write lock */ 457 #ifdef KERNEL 458 #define F_WAIT 0x010 /* Wait until lock is granted */ 459 #define F_FLOCK 0x020 /* Use flock(2) semantics for lock */ 460 #define F_POSIX 0x040 /* Use POSIX semantics for lock */ 461 #define F_PROV 0x080 /* Non-coalesced provisional lock */ 462 #define F_WAKE1_SAFE 0x100 /* its safe to only wake one waiter */ 463 #define F_ABORT 0x200 /* lock attempt aborted (force umount) */ 464 #define F_OFD_LOCK 0x400 /* Use "OFD" semantics for lock */ 465 #define F_TRANSFER 0x800 /* Transfer the lock to new proc */ 466 #define F_CONFINED 0x1000 /* fileglob cannot leave curproc */ 467 #endif 468 469 #if PRIVATE 470 /* 471 * ISOCHRONOUS attempts to sustain a minimum platform-dependent throughput 472 * for the duration of the I/O delivered to the driver. 473 */ 474 #define F_IOTYPE_ISOCHRONOUS 0x0001 475 #endif 476 477 /* 478 * [XSI] The values used for l_whence shall be defined as described 479 * in <unistd.h> 480 */ 481 #include <sys/_types/_seek_set.h> 482 483 /* 484 * [XSI] The symbolic names for file modes for use as values of mode_t 485 * shall be defined as described in <sys/stat.h> 486 */ 487 #include <sys/_types/_s_ifmt.h> 488 489 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 490 /* allocate flags (F_PREALLOCATE) */ 491 492 #define F_ALLOCATECONTIG 0x00000002 /* allocate contigious space */ 493 #define F_ALLOCATEALL 0x00000004 /* allocate all requested space or no space at all */ 494 #define F_ALLOCATEPERSIST 0x00000008 /* do not free space upon close(2) */ 495 496 /* Position Modes (fst_posmode) for F_PREALLOCATE */ 497 498 #define F_PEOFPOSMODE 3 /* Make it past all of the SEEK pos modes so that */ 499 /* we can keep them in sync should we desire */ 500 #define F_VOLPOSMODE 4 /* specify volume starting postion */ 501 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 502 503 /* 504 * Advisory file segment locking data type - 505 * information passed to system by user 506 */ 507 struct flock { 508 off_t l_start; /* starting offset */ 509 off_t l_len; /* len = 0 means until end of file */ 510 pid_t l_pid; /* lock owner */ 511 short l_type; /* lock type: read/write, etc. */ 512 short l_whence; /* type of l_start */ 513 }; 514 515 #include <sys/_types/_timespec.h> 516 517 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 518 /* 519 * Advisory file segment locking with time out - 520 * Information passed to system by user for F_SETLKWTIMEOUT 521 */ 522 struct flocktimeout { 523 struct flock fl; /* flock passed for file locking */ 524 struct timespec timeout; /* timespec struct for timeout */ 525 }; 526 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */ 527 528 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 529 /* 530 * advisory file read data type - 531 * information passed by user to system 532 */ 533 534 #ifdef KERNEL 535 #pragma pack(4) /* prevent structure padding in kernel */ 536 #endif /* KERNEL */ 537 538 struct radvisory { 539 off_t ra_offset; 540 int ra_count; 541 }; 542 543 #ifdef KERNEL 544 #pragma pack() 545 #endif /* KERNEL */ 546 547 /* 548 * detached code signatures data type - 549 * information passed by user to system used by F_ADDSIGS and F_ADDFILESIGS. 550 * F_ADDFILESIGS is a shortcut for files that contain their own signature and 551 * doesn't require mapping of the file in order to load the signature. 552 */ 553 #define USER_FSIGNATURES_CDHASH_LEN 20 554 typedef struct fsignatures { 555 off_t fs_file_start; 556 void *fs_blob_start; 557 size_t fs_blob_size; 558 559 /* The following fields are only applicable to F_ADDFILESIGS_INFO (64bit only). */ 560 /* Prior to F_ADDFILESIGS_INFO, this struct ended after fs_blob_size. */ 561 size_t fs_fsignatures_size;// input: size of this struct (for compatibility) 562 char fs_cdhash[USER_FSIGNATURES_CDHASH_LEN]; // output: cdhash 563 int fs_hash_type;// output: hash algorithm type for cdhash 564 } fsignatures_t; 565 #ifdef KERNEL 566 /* LP64 version of fsignatures. all pointers 567 * grow when we're dealing with a 64-bit process. 568 * WARNING - keep in sync with fsignatures 569 */ 570 571 typedef struct user32_fsignatures { 572 off_t fs_file_start; 573 user32_addr_t fs_blob_start; 574 user32_size_t fs_blob_size; 575 } user32_fsignatures_t; 576 577 typedef struct user_fsignatures { 578 off_t fs_file_start; /* offset of Mach-O image in FAT file */ 579 user_addr_t fs_blob_start; /* F_ADDSIGS: mem address of signature*/ 580 /* F_ADDFILESIGS: offset of signature */ 581 /* in Mach-O image */ 582 user_size_t fs_blob_size; /* size of signature blob */ 583 584 /* The following fields are only applicable to F_ADDFILESIGS_INFO. */ 585 /* Prior to F_ADDFILESIGS_INFO, this struct ended after fs_blob_size. */ 586 user_size_t fs_fsignatures_size;// input: size of this struct (for compatibility) 587 char fs_cdhash[USER_FSIGNATURES_CDHASH_LEN]; // output: cdhash 588 int fs_hash_type;//output: hash algorithm type for cdhash 589 } user_fsignatures_t; 590 #endif /* KERNEL */ 591 592 typedef struct fsupplement { 593 off_t fs_file_start; /* offset of Mach-O image in FAT file */ 594 off_t fs_blob_start; /* offset of signature in Mach-O image */ 595 size_t fs_blob_size; /* signature blob size */ 596 int fs_orig_fd; /* address of original image */ 597 } fsupplement_t; 598 599 #ifdef KERNEL 600 /* LP64 version of fsupplement. 601 * Supplements are not supported for 32 bit. 602 * WARNING - keep in sync with fsupplement. 603 */ 604 605 typedef struct user_fsupplement { 606 off_t fs_file_start; /* offset of Mach-O image in FAT file */ 607 off_t fs_blob_start; /* offset of signature in Mach-O image */ 608 size_t fs_blob_size; /* signature blob size */ 609 int fs_orig_fd; /* file descriptor to original image */ 610 } user_fsupplement_t; 611 #endif /* KERNEL */ 612 613 614 /* 615 * DYLD needs to check if the object is allowed to be combined 616 * into the main binary. This is done between the code signature 617 * is loaded and dyld is doing all the work to process the LOAD commands. 618 * 619 * While this could be done in F_ADDFILESIGS.* family the hook into 620 * the MAC module doesn't say no when LV isn't enabled and then that 621 * is cached on the vnode, and the MAC module never gets change once 622 * a process that library validation enabled. 623 */ 624 typedef struct fchecklv { 625 off_t lv_file_start; 626 size_t lv_error_message_size; 627 void *lv_error_message; 628 } fchecklv_t; 629 630 #ifdef KERNEL 631 /* LP64 version of fchecklv. all pointers 632 * grow when we're dealing with a 64-bit process. 633 * WARNING - keep in sync with fsignatures 634 */ 635 636 typedef struct user32_fchecklv { 637 user32_off_t lv_file_start; 638 user32_size_t lv_error_message_size; 639 user32_addr_t lv_error_message; 640 } user32_fchecklv_t; 641 642 typedef struct user_fchecklv { 643 off_t lv_file_start; 644 user_size_t lv_error_message_size; 645 user_addr_t lv_error_message; 646 } user_fchecklv_t; 647 648 #endif /* KERNEL */ 649 650 /* At this time F_GETSIGSINFO can only indicate platformness. 651 * As additional requestable information is defined, new keys will be added and the 652 * fgetsigsinfo_t structure will be lengthened to add space for the additional information 653 */ 654 #define GETSIGSINFO_PLATFORM_BINARY 1 655 656 /* fgetsigsinfo_t used by F_GETSIGSINFO command */ 657 typedef struct fgetsigsinfo { 658 off_t fg_file_start; /* IN: Offset in the file to look for a signature, -1 for any signature */ 659 int fg_info_request; /* IN: Key indicating the info requested */ 660 int fg_sig_is_platform; /* OUT: 1 if the signature is a plat form binary, 0 if not */ 661 } fgetsigsinfo_t; 662 663 664 /* lock operations for flock(2) */ 665 #define LOCK_SH 0x01 /* shared file lock */ 666 #define LOCK_EX 0x02 /* exclusive file lock */ 667 #define LOCK_NB 0x04 /* don't block when locking */ 668 #define LOCK_UN 0x08 /* unlock file */ 669 670 /* fstore_t type used by F_PREALLOCATE command */ 671 672 typedef struct fstore { 673 unsigned int fst_flags; /* IN: flags word */ 674 int fst_posmode; /* IN: indicates use of offset field */ 675 off_t fst_offset; /* IN: start of the region */ 676 off_t fst_length; /* IN: size of the region */ 677 off_t fst_bytesalloc; /* OUT: number of bytes allocated */ 678 } fstore_t; 679 680 /* fpunchhole_t used by F_PUNCHHOLE */ 681 typedef struct fpunchhole { 682 unsigned int fp_flags; /* unused */ 683 unsigned int reserved; /* (to maintain 8-byte alignment) */ 684 off_t fp_offset; /* IN: start of the region */ 685 off_t fp_length; /* IN: size of the region */ 686 } fpunchhole_t; 687 688 /* factive_file_trim_t used by F_TRIM_ACTIVE_FILE */ 689 typedef struct ftrimactivefile { 690 off_t fta_offset; /* IN: start of the region */ 691 off_t fta_length; /* IN: size of the region */ 692 } ftrimactivefile_t; 693 694 /* fspecread_t used by F_SPECULATIVE_READ */ 695 typedef struct fspecread { 696 unsigned int fsr_flags; /* IN: flags word */ 697 unsigned int reserved; /* to maintain 8-byte alignment */ 698 off_t fsr_offset; /* IN: start of the region */ 699 off_t fsr_length; /* IN: size of the region */ 700 } fspecread_t; 701 702 #ifdef PRIVATE 703 /* fassertbgaccess_t used by F_ASSERT_BG_ACCESS */ 704 typedef struct fassertbgaccess { 705 unsigned int fbga_flags; /* unused */ 706 unsigned int reserved; /* (to maintain 8-byte alignment) */ 707 unsigned long long ttl; /* IN: time to live for the assertion (nanoseconds; continuous) */ 708 } fassertbgaccess_t; 709 #endif // PRIVATE 710 711 /* fattributiontag_t used by F_ATTRIBUTION_TAG */ 712 #define ATTRIBUTION_NAME_MAX 255 713 typedef struct fattributiontag { 714 unsigned int ft_flags; /* IN: flags word */ 715 unsigned long long ft_hash; /* OUT: hash of attribution tag name */ 716 char ft_attribution_name[ATTRIBUTION_NAME_MAX]; /* IN/OUT: attribution tag name associated with the file */ 717 } fattributiontag_t; 718 719 /* ft_flags (F_ATTRIBUTION_TAG)*/ 720 #define F_CREATE_TAG 0x00000001 721 #define F_DELETE_TAG 0x00000002 722 #define F_QUERY_TAG 0x00000004 723 724 /* 725 * For F_LOG2PHYS this information is passed back to user 726 * Currently only devoffset is returned - that is the VOP_BMAP 727 * result - the disk device address corresponding to the 728 * current file offset (likely set with an lseek). 729 * 730 * The flags could hold an indication of whether the # of 731 * contiguous bytes reflects the true extent length on disk, 732 * or is an advisory value that indicates there is at least that 733 * many bytes contiguous. For some filesystems it might be too 734 * inefficient to provide anything beyond the advisory value. 735 * Flags and contiguous bytes return values are not yet implemented. 736 * For them the fcntl will nedd to switch from using BMAP to CMAP 737 * and a per filesystem type flag will be needed to interpret the 738 * contiguous bytes count result from CMAP. 739 * 740 * F_LOG2PHYS_EXT is a variant of F_LOG2PHYS that uses a passed in 741 * file offset and length instead of the current file offset. 742 * F_LOG2PHYS_EXT operates on the same structure as F_LOG2PHYS, but 743 * treats it as an in/out. 744 */ 745 #pragma pack(4) 746 747 struct log2phys { 748 unsigned int l2p_flags; /* unused so far */ 749 off_t l2p_contigbytes; /* F_LOG2PHYS: unused so far */ 750 /* F_LOG2PHYS_EXT: IN: number of bytes to be queried */ 751 /* OUT: number of contiguous bytes at this position */ 752 off_t l2p_devoffset; /* F_LOG2PHYS: OUT: bytes into device */ 753 /* F_LOG2PHYS_EXT: IN: bytes into file */ 754 /* OUT: bytes into device */ 755 }; 756 757 #pragma pack() 758 759 #define O_POPUP 0x80000000 /* force window to popup on open */ 760 #define O_ALERT 0x20000000 /* small, clean popup window */ 761 762 #ifdef PRIVATE 763 /* 764 * SPI: Argument data for F_OPENFROM 765 */ 766 struct fopenfrom { 767 unsigned int o_flags; /* same as open(2) */ 768 mode_t o_mode; /* same as open(2) */ 769 char * o_pathname; /* relative pathname */ 770 }; 771 772 #ifdef KERNEL 773 /* 774 * LP64 version of fopenfrom. Memory pointers 775 * grow when we're dealing with a 64-bit process. 776 * 777 * WARNING - keep in sync with fopenfrom (above) 778 */ 779 struct user32_fopenfrom { 780 unsigned int o_flags; 781 mode_t o_mode; 782 user32_addr_t o_pathname; 783 }; 784 785 struct user_fopenfrom { 786 unsigned int o_flags; 787 mode_t o_mode; 788 user_addr_t o_pathname; 789 }; 790 #endif /* KERNEL */ 791 792 #endif /* PRIVATE */ 793 794 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 795 796 #ifndef KERNEL 797 798 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 799 800 #include <sys/_types/_filesec_t.h> 801 802 typedef enum { 803 FILESEC_OWNER = 1, 804 FILESEC_GROUP = 2, 805 FILESEC_UUID = 3, 806 FILESEC_MODE = 4, 807 FILESEC_ACL = 5, 808 FILESEC_GRPUUID = 6, 809 810 /* XXX these are private to the implementation */ 811 FILESEC_ACL_RAW = 100, 812 FILESEC_ACL_ALLOCSIZE = 101 813 } filesec_property_t; 814 815 /* XXX backwards compatibility */ 816 #define FILESEC_GUID FILESEC_UUID 817 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 818 819 __BEGIN_DECLS 820 int open(const char *, int, ...) __DARWIN_ALIAS_C(open); 821 #if __DARWIN_C_LEVEL >= 200809L 822 int openat(int, const char *, int, ...) __DARWIN_NOCANCEL(openat) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0); 823 #endif 824 int creat(const char *, mode_t) __DARWIN_ALIAS_C(creat); 825 int fcntl(int, int, ...) __DARWIN_ALIAS_C(fcntl); 826 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 827 828 #ifdef PRIVATE 829 /* 830 * These definitions are retained temporarily for compatibility. 831 * If you want to use fileports, please use 832 * #include <sys/fileport.h> 833 * or 834 * #include <System/sys/fileport.h> 835 */ 836 #ifndef _FILEPORT_T 837 #define _FILEPORT_T 838 typedef __darwin_mach_port_t fileport_t; 839 #define FILEPORT_NULL ((fileport_t)0) 840 #endif /* _FILEPORT_T */ 841 842 int fileport_makeport(int, fileport_t*); 843 int fileport_makefd(fileport_t); 844 #endif /* PRIVATE */ 845 int openx_np(const char *, int, filesec_t); 846 /* 847 * data-protected non-portable open(2) : 848 * int open_dprotected_np(user_addr_t path, int flags, int class, int dpflags, int mode) 849 */ 850 int open_dprotected_np( const char *, int, int, int, ...); 851 int openat_dprotected_np( int, const char *, int, int, int, ...); 852 int openat_authenticated_np(int, const char *, int, int); 853 int flock(int, int); 854 filesec_t filesec_init(void); 855 filesec_t filesec_dup(filesec_t); 856 void filesec_free(filesec_t); 857 int filesec_get_property(filesec_t, filesec_property_t, void *); 858 int filesec_query_property(filesec_t, filesec_property_t, int *); 859 int filesec_set_property(filesec_t, filesec_property_t, const void *); 860 int filesec_unset_property(filesec_t, filesec_property_t) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2); 861 #define _FILESEC_UNSET_PROPERTY ((void *)0) 862 #define _FILESEC_REMOVE_ACL ((void *)1) 863 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 864 __END_DECLS 865 #endif 866 867 #endif /* !_SYS_FCNTL_H_ */ 868