fcntl.h (26438B) - Raw
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 #include <Availability.h> 81 82 /* We should not be exporting size_t here. Temporary for gcc bootstrapping. */ 83 #include <sys/_types/_size_t.h> 84 #include <sys/_types/_mode_t.h> 85 #include <sys/_types/_off_t.h> 86 #include <sys/_types/_pid_t.h> 87 88 /* 89 * File status flags: these are used by open(2), fcntl(2). 90 * They are also used (indirectly) in the kernel file structure f_flags, 91 * which is a superset of the open/fcntl flags. Open flags and f_flags 92 * are inter-convertible using OFLAGS(fflags) and FFLAGS(oflags). 93 * Open/fcntl flags begin with O_; kernel-internal flags begin with F. 94 */ 95 /* open-only flags */ 96 #define O_RDONLY 0x0000 /* open for reading only */ 97 #define O_WRONLY 0x0001 /* open for writing only */ 98 #define O_RDWR 0x0002 /* open for reading and writing */ 99 #define O_ACCMODE 0x0003 /* mask for above modes */ 100 101 /* 102 * Kernel encoding of open mode; separate read and write bits that are 103 * independently testable: 1 greater than the above. 104 * 105 * XXX 106 * FREAD and FWRITE are excluded from the #ifdef KERNEL so that TIOCFLUSH, 107 * which was documented to use FREAD/FWRITE, continues to work. 108 */ 109 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 110 #define FREAD 0x00000001 111 #define FWRITE 0x00000002 112 #endif 113 #define O_NONBLOCK 0x00000004 /* no delay */ 114 #define O_APPEND 0x00000008 /* set append mode */ 115 116 #include <sys/_types/_o_sync.h> 117 118 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 119 #define O_SHLOCK 0x00000010 /* open with shared file lock */ 120 #define O_EXLOCK 0x00000020 /* open with exclusive file lock */ 121 #define O_ASYNC 0x00000040 /* signal pgrp when data ready */ 122 #define O_FSYNC O_SYNC /* source compatibility: do not use */ 123 #define O_NOFOLLOW 0x00000100 /* don't follow symlinks */ 124 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 125 #define O_CREAT 0x00000200 /* create if nonexistant */ 126 #define O_TRUNC 0x00000400 /* truncate to zero length */ 127 #define O_EXCL 0x00000800 /* error if already exists */ 128 #define O_RESOLVE_BENEATH 0x00001000 /* only for open(2), same value as FMARK */ 129 130 131 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 132 #define O_EVTONLY 0x00008000 /* descriptor requested for event notifications only */ 133 #endif 134 135 136 #define O_NOCTTY 0x00020000 /* don't assign controlling terminal */ 137 138 139 #if __DARWIN_C_LEVEL >= 200809L 140 #define O_DIRECTORY 0x00100000 141 #endif 142 143 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 144 #define O_SYMLINK 0x00200000 /* allow open of a symlink */ 145 #endif 146 147 // O_DSYNC 0x00400000 /* synch I/O data integrity */ 148 #include <sys/_types/_o_dsync.h> 149 150 151 #if __DARWIN_C_LEVEL >= 200809L 152 #define O_CLOEXEC 0x01000000 /* implicitly set FD_CLOEXEC */ 153 #endif 154 155 156 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 157 #define O_NOFOLLOW_ANY 0x20000000 /* no symlinks allowed in path */ 158 #endif 159 160 #if __DARWIN_C_LEVEL >= 200809L 161 #define O_EXEC 0x40000000 /* open file for execute only */ 162 #define O_SEARCH (O_EXEC | O_DIRECTORY) /* open directory for search only */ 163 #endif 164 165 166 167 #if __DARWIN_C_LEVEL >= 200809L 168 /* 169 * Descriptor value for the current working directory 170 */ 171 #define AT_FDCWD -2 172 173 /* 174 * Flags for the at functions 175 */ 176 #define AT_EACCESS 0x0010 /* Use effective ids in access check */ 177 #define AT_SYMLINK_NOFOLLOW 0x0020 /* Act on the symlink itself not the target */ 178 #define AT_SYMLINK_FOLLOW 0x0040 /* Act on target of symlink */ 179 #define AT_REMOVEDIR 0x0080 /* Path refers to directory */ 180 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 181 #define AT_REALDEV 0x0200 /* Return real device inodes resides on for fstatat(2) */ 182 #define AT_FDONLY 0x0400 /* Use only the fd and Ignore the path for fstatat(2) */ 183 #define AT_SYMLINK_NOFOLLOW_ANY 0x0800 /* Path should not contain any symlinks */ 184 #endif 185 #endif 186 187 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 188 /* Data Protection Flags */ 189 #define O_DP_GETRAWENCRYPTED 0x0001 190 #define O_DP_GETRAWUNENCRYPTED 0x0002 191 #define O_DP_AUTHENTICATE 0x0004 192 193 /* Descriptor value for openat_authenticated_np() to skip authentication with another fd */ 194 #define AUTH_OPEN_NOAUTHFD -1 195 #endif 196 197 198 199 /* 200 * The O_* flags used to have only F* names, which were used in the kernel 201 * and by fcntl. We retain the F* names for the kernel f_flags field 202 * and for backward compatibility for fcntl. 203 */ 204 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 205 #define FAPPEND O_APPEND /* kernel/compat */ 206 #define FASYNC O_ASYNC /* kernel/compat */ 207 #define FFSYNC O_FSYNC /* kernel */ 208 #define FFDSYNC O_DSYNC /* kernel */ 209 #define FNONBLOCK O_NONBLOCK /* kernel */ 210 #define FNDELAY O_NONBLOCK /* compat */ 211 #define O_NDELAY O_NONBLOCK /* compat */ 212 #endif 213 214 /* 215 * Flags used for copyfile(2) 216 */ 217 218 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 219 #define CPF_OVERWRITE 0x0001 220 #define CPF_IGNORE_MODE 0x0002 221 #define CPF_MASK (CPF_OVERWRITE|CPF_IGNORE_MODE) 222 #endif 223 224 /* 225 * Constants used for fcntl(2) 226 */ 227 228 /* command values */ 229 #define F_DUPFD 0 /* duplicate file descriptor */ 230 #define F_GETFD 1 /* get file descriptor flags */ 231 #define F_SETFD 2 /* set file descriptor flags */ 232 #define F_GETFL 3 /* get file status flags */ 233 #define F_SETFL 4 /* set file status flags */ 234 #define F_GETOWN 5 /* get SIGIO/SIGURG proc/pgrp */ 235 #define F_SETOWN 6 /* set SIGIO/SIGURG proc/pgrp */ 236 #define F_GETLK 7 /* get record locking information */ 237 #define F_SETLK 8 /* set record locking information */ 238 #define F_SETLKW 9 /* F_SETLK; wait if blocked */ 239 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 240 #define F_SETLKWTIMEOUT 10 /* F_SETLK; wait if blocked, return on timeout */ 241 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */ 242 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 243 #define F_FLUSH_DATA 40 244 #define F_CHKCLEAN 41 /* Used for regression test */ 245 #define F_PREALLOCATE 42 /* Preallocate storage */ 246 #define F_SETSIZE 43 /* Truncate a file. Equivalent to calling truncate(2) */ 247 #define F_RDADVISE 44 /* Issue an advisory read async with no copy to user */ 248 #define F_RDAHEAD 45 /* turn read ahead off/on for this fd */ 249 /* 250 * 46,47 used to be F_READBOOTSTRAP and F_WRITEBOOTSTRAP 251 */ 252 #define F_NOCACHE 48 /* turn data caching off/on for this fd */ 253 #define F_LOG2PHYS 49 /* file offset to device offset */ 254 #define F_GETPATH 50 /* return the full path of the fd */ 255 #define F_FULLFSYNC 51 /* fsync + ask the drive to flush to the media */ 256 #define F_PATHPKG_CHECK 52 /* find which component (if any) is a package */ 257 #define F_FREEZE_FS 53 /* "freeze" all fs operations */ 258 #define F_THAW_FS 54 /* "thaw" all fs operations */ 259 #define F_GLOBAL_NOCACHE 55 /* turn data caching off/on (globally) for this file */ 260 261 262 #define F_ADDSIGS 59 /* add detached signatures */ 263 264 265 #define F_ADDFILESIGS 61 /* add signature from same file (used by dyld for shared libs) */ 266 267 #define F_NODIRECT 62 /* used in conjunction with F_NOCACHE to indicate that DIRECT, synchonous writes */ 268 /* should not be used (i.e. its ok to temporaily create cached pages) */ 269 270 #define F_GETPROTECTIONCLASS 63 /* Get the protection class of a file from the EA, returns int */ 271 #define F_SETPROTECTIONCLASS 64 /* Set the protection class of a file for the EA, requires int */ 272 273 #define F_LOG2PHYS_EXT 65 /* file offset to device offset, extended */ 274 275 #define F_GETLKPID 66 /* See man fcntl(2) F_GETLK 276 * Similar to F_GETLK but in addition l_pid is treated as an input parameter 277 * which is used as a matching value when searching locks on the file 278 * so that only locks owned by the process with pid l_pid are returned. 279 * However, any flock(2) type lock will also be found with the returned value 280 * of l_pid set to -1 (as with F_GETLK). 281 */ 282 283 /* See F_DUPFD_CLOEXEC below for 67 */ 284 285 286 #define F_SETBACKINGSTORE 70 /* Mark the file as being the backing store for another filesystem */ 287 #define F_GETPATH_MTMINFO 71 /* return the full path of the FD, but error in specific mtmd circumstances */ 288 289 #define F_GETCODEDIR 72 /* Returns the code directory, with associated hashes, to the caller */ 290 291 #define F_SETNOSIGPIPE 73 /* No SIGPIPE generated on EPIPE */ 292 #define F_GETNOSIGPIPE 74 /* Status of SIGPIPE for this fd */ 293 294 #define F_TRANSCODEKEY 75 /* For some cases, we need to rewrap the key for AKS/MKB */ 295 296 #define F_SINGLE_WRITER 76 /* file being written to a by single writer... if throttling enabled, writes */ 297 /* may be broken into smaller chunks with throttling in between */ 298 299 #define F_GETPROTECTIONLEVEL 77 /* Get the protection version number for this filesystem */ 300 301 #define F_FINDSIGS 78 /* Add detached code signatures (used by dyld for shared libs) */ 302 303 304 #define F_ADDFILESIGS_FOR_DYLD_SIM 83 /* Add signature from same file, only if it is signed by Apple (used by dyld for simulator) */ 305 306 307 #define F_BARRIERFSYNC 85 /* fsync + issue barrier to drive */ 308 309 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 310 #define F_OFD_SETLK 90 /* Acquire or release open file description lock */ 311 #define F_OFD_SETLKW 91 /* (as F_OFD_SETLK but blocking if conflicting lock) */ 312 #define F_OFD_GETLK 92 /* Examine OFD lock */ 313 314 #define F_OFD_SETLKWTIMEOUT 93 /* (as F_OFD_SETLKW but return if timeout) */ 315 #endif 316 317 318 #define F_ADDFILESIGS_RETURN 97 /* Add signature from same file, return end offset in structure on success */ 319 #define F_CHECK_LV 98 /* Check if Library Validation allows this Mach-O file to be mapped into the calling process */ 320 321 #define F_PUNCHHOLE 99 /* Deallocate a range of the file */ 322 323 #define F_TRIM_ACTIVE_FILE 100 /* Trim an active file */ 324 325 #define F_SPECULATIVE_READ 101 /* Asynchronous advisory read fcntl for regular and compressed file */ 326 327 #define F_GETPATH_NOFIRMLINK 102 /* return the full path without firmlinks of the fd */ 328 329 #define F_ADDFILESIGS_INFO 103 /* Add signature from same file, return information */ 330 #define F_ADDFILESUPPL 104 /* Add supplemental signature from same file with fd reference to original */ 331 #define F_GETSIGSINFO 105 /* Look up code signature information attached to a file or slice */ 332 333 #define F_SETLEASE 106 /* Acquire or release lease */ 334 #define F_GETLEASE 107 /* Retrieve lease information */ 335 336 #define F_SETLEASE_ARG(t, oc) ((t) | ((oc) << 2)) 337 338 339 #define F_TRANSFEREXTENTS 110 /* Transfer allocated extents beyond leof to a different file */ 340 341 #define F_ATTRIBUTION_TAG 111 /* Based on flags, query/set/delete a file's attribution tag */ 342 343 #define F_ADDSIGS_MAIN_BINARY 113 /* add detached signatures for main binary -- development only */ 344 345 // FS-specific fcntl()'s numbers begin at 0x00010000 and go up 346 #define FCNTL_FS_SPECIFIC_BASE 0x00010000 347 348 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 349 350 #if __DARWIN_C_LEVEL >= 200809L 351 #define F_DUPFD_CLOEXEC 67 /* mark the dup with FD_CLOEXEC */ 352 #endif 353 354 /* file descriptor flags (F_GETFD, F_SETFD) */ 355 #define FD_CLOEXEC 1 /* close-on-exec flag */ 356 357 /* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */ 358 #define F_RDLCK 1 /* shared or read lock */ 359 #define F_UNLCK 2 /* unlock */ 360 #define F_WRLCK 3 /* exclusive or write lock */ 361 362 363 /* 364 * [XSI] The values used for l_whence shall be defined as described 365 * in <unistd.h> 366 */ 367 #include <sys/_types/_seek_set.h> 368 369 /* 370 * [XSI] The symbolic names for file modes for use as values of mode_t 371 * shall be defined as described in <sys/stat.h> 372 */ 373 #include <sys/_types/_s_ifmt.h> 374 375 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 376 /* allocate flags (F_PREALLOCATE) */ 377 378 #define F_ALLOCATECONTIG 0x00000002 /* allocate contigious space */ 379 #define F_ALLOCATEALL 0x00000004 /* allocate all requested space or no space at all */ 380 #define F_ALLOCATEPERSIST 0x00000008 /* do not free space upon close(2) */ 381 382 /* Position Modes (fst_posmode) for F_PREALLOCATE */ 383 384 #define F_PEOFPOSMODE 3 /* Make it past all of the SEEK pos modes so that */ 385 /* we can keep them in sync should we desire */ 386 #define F_VOLPOSMODE 4 /* specify volume starting postion */ 387 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 388 389 /* 390 * Advisory file segment locking data type - 391 * information passed to system by user 392 */ 393 struct flock { 394 off_t l_start; /* starting offset */ 395 off_t l_len; /* len = 0 means until end of file */ 396 pid_t l_pid; /* lock owner */ 397 short l_type; /* lock type: read/write, etc. */ 398 short l_whence; /* type of l_start */ 399 }; 400 401 #include <sys/_types/_timespec.h> 402 403 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL 404 /* 405 * Advisory file segment locking with time out - 406 * Information passed to system by user for F_SETLKWTIMEOUT 407 */ 408 struct flocktimeout { 409 struct flock fl; /* flock passed for file locking */ 410 struct timespec timeout; /* timespec struct for timeout */ 411 }; 412 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */ 413 414 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 415 /* 416 * advisory file read data type - 417 * information passed by user to system 418 */ 419 420 421 struct radvisory { 422 off_t ra_offset; 423 int ra_count; 424 }; 425 426 427 /* 428 * detached code signatures data type - 429 * information passed by user to system used by F_ADDSIGS and F_ADDFILESIGS. 430 * F_ADDFILESIGS is a shortcut for files that contain their own signature and 431 * doesn't require mapping of the file in order to load the signature. 432 */ 433 #define USER_FSIGNATURES_CDHASH_LEN 20 434 typedef struct fsignatures { 435 off_t fs_file_start; 436 void *fs_blob_start; 437 size_t fs_blob_size; 438 439 /* The following fields are only applicable to F_ADDFILESIGS_INFO (64bit only). */ 440 /* Prior to F_ADDFILESIGS_INFO, this struct ended after fs_blob_size. */ 441 size_t fs_fsignatures_size;// input: size of this struct (for compatibility) 442 char fs_cdhash[USER_FSIGNATURES_CDHASH_LEN]; // output: cdhash 443 int fs_hash_type;// output: hash algorithm type for cdhash 444 } fsignatures_t; 445 446 typedef struct fsupplement { 447 off_t fs_file_start; /* offset of Mach-O image in FAT file */ 448 off_t fs_blob_start; /* offset of signature in Mach-O image */ 449 size_t fs_blob_size; /* signature blob size */ 450 int fs_orig_fd; /* address of original image */ 451 } fsupplement_t; 452 453 454 455 /* 456 * DYLD needs to check if the object is allowed to be combined 457 * into the main binary. This is done between the code signature 458 * is loaded and dyld is doing all the work to process the LOAD commands. 459 * 460 * While this could be done in F_ADDFILESIGS.* family the hook into 461 * the MAC module doesn't say no when LV isn't enabled and then that 462 * is cached on the vnode, and the MAC module never gets change once 463 * a process that library validation enabled. 464 */ 465 typedef struct fchecklv { 466 off_t lv_file_start; 467 size_t lv_error_message_size; 468 void *lv_error_message; 469 } fchecklv_t; 470 471 472 /* At this time F_GETSIGSINFO can only indicate platformness. 473 * As additional requestable information is defined, new keys will be added and the 474 * fgetsigsinfo_t structure will be lengthened to add space for the additional information 475 */ 476 #define GETSIGSINFO_PLATFORM_BINARY 1 477 478 /* fgetsigsinfo_t used by F_GETSIGSINFO command */ 479 typedef struct fgetsigsinfo { 480 off_t fg_file_start; /* IN: Offset in the file to look for a signature, -1 for any signature */ 481 int fg_info_request; /* IN: Key indicating the info requested */ 482 int fg_sig_is_platform; /* OUT: 1 if the signature is a plat form binary, 0 if not */ 483 } fgetsigsinfo_t; 484 485 486 /* lock operations for flock(2) */ 487 #define LOCK_SH 0x01 /* shared file lock */ 488 #define LOCK_EX 0x02 /* exclusive file lock */ 489 #define LOCK_NB 0x04 /* don't block when locking */ 490 #define LOCK_UN 0x08 /* unlock file */ 491 492 /* fstore_t type used by F_PREALLOCATE command */ 493 494 typedef struct fstore { 495 unsigned int fst_flags; /* IN: flags word */ 496 int fst_posmode; /* IN: indicates use of offset field */ 497 off_t fst_offset; /* IN: start of the region */ 498 off_t fst_length; /* IN: size of the region */ 499 off_t fst_bytesalloc; /* OUT: number of bytes allocated */ 500 } fstore_t; 501 502 /* fpunchhole_t used by F_PUNCHHOLE */ 503 typedef struct fpunchhole { 504 unsigned int fp_flags; /* unused */ 505 unsigned int reserved; /* (to maintain 8-byte alignment) */ 506 off_t fp_offset; /* IN: start of the region */ 507 off_t fp_length; /* IN: size of the region */ 508 } fpunchhole_t; 509 510 /* factive_file_trim_t used by F_TRIM_ACTIVE_FILE */ 511 typedef struct ftrimactivefile { 512 off_t fta_offset; /* IN: start of the region */ 513 off_t fta_length; /* IN: size of the region */ 514 } ftrimactivefile_t; 515 516 /* fspecread_t used by F_SPECULATIVE_READ */ 517 typedef struct fspecread { 518 unsigned int fsr_flags; /* IN: flags word */ 519 unsigned int reserved; /* to maintain 8-byte alignment */ 520 off_t fsr_offset; /* IN: start of the region */ 521 off_t fsr_length; /* IN: size of the region */ 522 } fspecread_t; 523 524 525 /* fattributiontag_t used by F_ATTRIBUTION_TAG */ 526 #define ATTRIBUTION_NAME_MAX 255 527 typedef struct fattributiontag { 528 unsigned int ft_flags; /* IN: flags word */ 529 unsigned long long ft_hash; /* OUT: hash of attribution tag name */ 530 char ft_attribution_name[ATTRIBUTION_NAME_MAX]; /* IN/OUT: attribution tag name associated with the file */ 531 } fattributiontag_t; 532 533 /* ft_flags (F_ATTRIBUTION_TAG)*/ 534 #define F_CREATE_TAG 0x00000001 535 #define F_DELETE_TAG 0x00000002 536 #define F_QUERY_TAG 0x00000004 537 538 /* 539 * For F_LOG2PHYS this information is passed back to user 540 * Currently only devoffset is returned - that is the VOP_BMAP 541 * result - the disk device address corresponding to the 542 * current file offset (likely set with an lseek). 543 * 544 * The flags could hold an indication of whether the # of 545 * contiguous bytes reflects the true extent length on disk, 546 * or is an advisory value that indicates there is at least that 547 * many bytes contiguous. For some filesystems it might be too 548 * inefficient to provide anything beyond the advisory value. 549 * Flags and contiguous bytes return values are not yet implemented. 550 * For them the fcntl will nedd to switch from using BMAP to CMAP 551 * and a per filesystem type flag will be needed to interpret the 552 * contiguous bytes count result from CMAP. 553 * 554 * F_LOG2PHYS_EXT is a variant of F_LOG2PHYS that uses a passed in 555 * file offset and length instead of the current file offset. 556 * F_LOG2PHYS_EXT operates on the same structure as F_LOG2PHYS, but 557 * treats it as an in/out. 558 */ 559 #pragma pack(4) 560 561 struct log2phys { 562 unsigned int l2p_flags; /* unused so far */ 563 off_t l2p_contigbytes; /* F_LOG2PHYS: unused so far */ 564 /* F_LOG2PHYS_EXT: IN: number of bytes to be queried */ 565 /* OUT: number of contiguous bytes at this position */ 566 off_t l2p_devoffset; /* F_LOG2PHYS: OUT: bytes into device */ 567 /* F_LOG2PHYS_EXT: IN: bytes into file */ 568 /* OUT: bytes into device */ 569 }; 570 571 #pragma pack() 572 573 #define O_POPUP 0x80000000 /* force window to popup on open */ 574 #define O_ALERT 0x20000000 /* small, clean popup window */ 575 576 577 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 578 579 580 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 581 582 #include <sys/_types/_filesec_t.h> 583 584 typedef enum { 585 FILESEC_OWNER = 1, 586 FILESEC_GROUP = 2, 587 FILESEC_UUID = 3, 588 FILESEC_MODE = 4, 589 FILESEC_ACL = 5, 590 FILESEC_GRPUUID = 6, 591 592 /* XXX these are private to the implementation */ 593 FILESEC_ACL_RAW = 100, 594 FILESEC_ACL_ALLOCSIZE = 101 595 } filesec_property_t; 596 597 /* XXX backwards compatibility */ 598 #define FILESEC_GUID FILESEC_UUID 599 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 600 601 __BEGIN_DECLS 602 int open(const char *, int, ...) __DARWIN_ALIAS_C(open); 603 #if __DARWIN_C_LEVEL >= 200809L 604 int openat(int, const char *, int, ...) __DARWIN_NOCANCEL(openat) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0); 605 #endif 606 int creat(const char *, mode_t) __DARWIN_ALIAS_C(creat); 607 int fcntl(int, int, ...) __DARWIN_ALIAS_C(fcntl); 608 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 609 610 int openx_np(const char *, int, filesec_t); 611 /* 612 * data-protected non-portable open(2) : 613 * int open_dprotected_np(user_addr_t path, int flags, int class, int dpflags, int mode) 614 */ 615 int open_dprotected_np( const char *, int, int, int, ...); 616 int openat_dprotected_np( int, const char *, int, int, int, ...); 617 int openat_authenticated_np(int, const char *, int, int); 618 int flock(int, int); 619 filesec_t filesec_init(void); 620 filesec_t filesec_dup(filesec_t); 621 void filesec_free(filesec_t); 622 int filesec_get_property(filesec_t, filesec_property_t, void *); 623 int filesec_query_property(filesec_t, filesec_property_t, int *); 624 int filesec_set_property(filesec_t, filesec_property_t, const void *); 625 int filesec_unset_property(filesec_t, filesec_property_t) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2); 626 #define _FILESEC_UNSET_PROPERTY ((void *)0) 627 #define _FILESEC_REMOVE_ACL ((void *)1) 628 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 629 __END_DECLS 630 631 #endif /* !_SYS_FCNTL_H_ */