bsd/sys/fcntl.h

   1 /*
   2  * Copyright (c) 2000-2013 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           0x0001
 113 #define FWRITE          0x0002
 114 #endif
 115 #define O_NONBLOCK      0x0004          /* no delay */
 116 #define O_APPEND        0x0008          /* 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        0x0010          /* open with shared file lock */
 122 #define O_EXLOCK        0x0020          /* open with exclusive file lock */
 123 #define O_ASYNC         0x0040          /* signal pgrp when data ready */
 124 #define O_FSYNC         O_SYNC          /* source compatibility: do not use */
 125 #define O_NOFOLLOW  0x0100      /* don't follow symlinks */
 126 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 127 #define O_CREAT         0x0200          /* create if nonexistant */
 128 #define O_TRUNC         0x0400          /* truncate to zero length */
 129 #define O_EXCL          0x0800          /* error if already exists */
 130 #ifdef KERNEL
 131 #define FMARK           0x1000          /* mark during gc() */
 132 #define FDEFER          0x2000          /* defer for next gc pass */
 133 #define FHASLOCK        0x4000          /* descriptor holds advisory lock */
 134 #endif
 135
 136 #if __DARWIN_C_LEVEL >= 200809L
 137 /*
 138  * Descriptor value for the current working directory
 139  */
 140 #define AT_FDCWD        -2
 141
 142 /*
 143  * Flags for the at functions
 144  */
 145 #define AT_EACCESS              0x0010  /* Use effective ids in access check */
 146 #define AT_SYMLINK_NOFOLLOW     0x0020  /* Act on the symlink itself not the target */
 147 #define AT_SYMLINK_FOLLOW       0x0040  /* Act on target of symlink */
 148 #define AT_REMOVEDIR            0x0080  /* Path refers to directory */
 149 #endif
 150
 151 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 152 #define O_EVTONLY       0x8000          /* descriptor requested for event notifications only */
 153 #endif
 154
 155 #ifdef KERNEL
 156 #define FWASWRITTEN     0x10000         /* descriptor was written */
 157 #endif
 158
 159 #define O_NOCTTY        0x20000         /* don't assign controlling terminal */
 160
 161 #ifdef KERNEL
 162 #define FNOCACHE        0x40000         /* fcntl(F_NOCACHE, 1) */
 163 #define FNORDAHEAD      0x80000         /* fcntl(F_RDAHEAD, 0) */
 164 #endif
 165
 166 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 167 #define O_DIRECTORY     0x100000
 168 #define O_SYMLINK       0x200000        /* allow open of a symlink */
 169 #endif
 170
 171 #include <sys/_types/_o_dsync.h>
 172
 173 #ifdef KERNEL
 174 #define FNODIRECT       0x800000        /* fcntl(F_NODIRECT, 1) */
 175 #endif
 176
 177 #if __DARWIN_C_LEVEL >= 200809L
 178 #define O_CLOEXEC       0x1000000       /* implicitly set FD_CLOEXEC */
 179 #endif
 180
 181 #ifdef KERNEL
 182 #define FENCRYPTED      0x2000000
 183 #endif
 184
 185 #ifdef KERNEL
 186 #define FSINGLE_WRITER  0x4000000       /* fcntl(F_SINGLE_WRITER, 1) */
 187 #endif
 188
 189 #ifdef KERNEL
 190 #define O_CLOFORK       0x8000000       /* implicitly set FD_CLOFORK */
 191 #endif
 192
 193 /* Data Protection Flags */
 194 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 195 #define O_DP_GETRAWENCRYPTED    0x0001
 196 #endif
 197
 198
 199 #ifdef KERNEL
 200 /* convert from open() flags to/from fflags; convert O_RD/WR to FREAD/FWRITE */
 201 #define FFLAGS(oflags)  ((oflags) + 1)
 202 #define OFLAGS(fflags)  ((fflags) - 1)
 203
 204 /* bits to save after open */
 205 #define FMASK           (FREAD|FWRITE|FAPPEND|FASYNC|FFSYNC|FFDSYNC|FNONBLOCK)
 206 /* bits settable by fcntl(F_SETFL, ...) */
 207 #define FCNTLFLAGS      (FAPPEND|FASYNC|FFSYNC|FFDSYNC|FNONBLOCK)
 208 #endif
 209
 210 /*
 211  * The O_* flags used to have only F* names, which were used in the kernel
 212  * and by fcntl.  We retain the F* names for the kernel f_flags field
 213  * and for backward compatibility for fcntl.
 214  */
 215 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 216 #define FAPPEND         O_APPEND        /* kernel/compat */
 217 #define FASYNC          O_ASYNC         /* kernel/compat */
 218 #define FFSYNC          O_FSYNC         /* kernel */
 219 #define FFDSYNC         O_DSYNC         /* kernel */
 220 #define FNONBLOCK       O_NONBLOCK      /* kernel */
 221 #define FNDELAY         O_NONBLOCK      /* compat */
 222 #define O_NDELAY        O_NONBLOCK      /* compat */
 223 #endif
 224
 225 /*
 226  * Flags used for copyfile(2)
 227  */
 228
 229 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 230 #define CPF_OVERWRITE 1
 231 #define CPF_IGNORE_MODE 2
 232 #define CPF_MASK (CPF_OVERWRITE|CPF_IGNORE_MODE)
 233 #endif
 234
 235 /*
 236  * Constants used for fcntl(2)
 237  */
 238
 239 /* command values */
 240 #define F_DUPFD         0               /* duplicate file descriptor */
 241 #define F_GETFD         1               /* get file descriptor flags */
 242 #define F_SETFD         2               /* set file descriptor flags */
 243 #define F_GETFL         3               /* get file status flags */
 244 #define F_SETFL         4               /* set file status flags */
 245 #define F_GETOWN        5               /* get SIGIO/SIGURG proc/pgrp */
 246 #define F_SETOWN        6               /* set SIGIO/SIGURG proc/pgrp */
 247 #define F_GETLK         7               /* get record locking information */
 248 #define F_SETLK         8               /* set record locking information */
 249 #define F_SETLKW        9               /* F_SETLK; wait if blocked */
 250 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 251 #define F_SETLKWTIMEOUT 10              /* F_SETLK; wait if blocked, return on timeout */
 252 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 253 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 254 #define F_FLUSH_DATA    40
 255 #define F_CHKCLEAN      41              /* Used for regression test */
 256 #define F_PREALLOCATE   42              /* Preallocate storage */
 257 #define F_SETSIZE       43              /* Truncate a file without zeroing space */
 258 #define F_RDADVISE      44              /* Issue an advisory read async with no copy to user */
 259 #define F_RDAHEAD       45              /* turn read ahead off/on for this fd */
 260 /*
 261  * 46,47 used to be F_READBOOTSTRAP and F_WRITEBOOTSTRAP
 262  */
 263 #define F_NOCACHE       48              /* turn data caching off/on for this fd */
 264 #define F_LOG2PHYS      49              /* file offset to device offset */
 265 #define F_GETPATH       50              /* return the full path of the fd */
 266 #define F_FULLFSYNC     51              /* fsync + ask the drive to flush to the media */
 267 #define F_PATHPKG_CHECK 52              /* find which component (if any) is a package */
 268 #define F_FREEZE_FS     53              /* "freeze" all fs operations */
 269 #define F_THAW_FS       54              /* "thaw" all fs operations */
 270 #define F_GLOBAL_NOCACHE 55             /* turn data caching off/on (globally) for this file */
 271
 272 #ifdef PRIVATE
 273 #define F_OPENFROM      56              /* SPI: open a file relative to fd (must be a dir) */
 274 #define F_UNLINKFROM    57              /* SPI: open a file relative to fd (must be a dir) */
 275 #define F_CHECK_OPENEVT 58              /* SPI: if a process is marked OPENEVT, or in O_EVTONLY on opens of this vnode */
 276 #endif /* PRIVATE */
 277
 278 #define F_ADDSIGS       59              /* add detached signatures */
 279
 280 #ifdef PRIVATE
 281 /* Deprecated/Removed in 10.9 */
 282 #define F_MARKDEPENDENCY 60             /* this process hosts the device supporting the fs backing this fd */
 283 #endif
 284
 285 #define F_ADDFILESIGS   61              /* add signature from same file (used by dyld for shared libs) */
 286
 287 #define F_NODIRECT      62              /* used in conjunction with F_NOCACHE to indicate that DIRECT, synchonous writes */
 288                                         /* should not be used (i.e. its ok to temporaily create cached pages) */
 289
 290 #define F_GETPROTECTIONCLASS    63              /* Get the protection class of a file from the EA, returns int */
 291 #define F_SETPROTECTIONCLASS    64              /* Set the protection class of a file for the EA, requires int */
 292
 293 #define F_LOG2PHYS_EXT  65              /* file offset to device offset, extended */
 294
 295 #define F_GETLKPID              66              /* get record locking information, per-process */
 296
 297 /* See F_DUPFD_CLOEXEC below for 67 */
 298
 299 #ifdef PRIVATE
 300 #define F_SETSTATICCONTENT              68              /*
 301                                                                                  * indicate to the filesystem/storage driver that the content to be
 302                                                                                  * written is usually static.  a nonzero value enables it, 0 disables it.
 303                                                                                  */
 304 #define F_MOVEDATAEXTENTS       69              /* Swap only the data associated with two files */
 305 #endif
 306
 307 #define F_SETBACKINGSTORE       70      /* Mark the file as being the backing store for another filesystem */
 308 #define F_GETPATH_MTMINFO       71      /* return the full path of the FD, but error in specific mtmd circumstances */
 309
 310 #define F_GETCODEDIR            72      /* Returns the code directory, with associated hashes, to the caller */
 311
 312 #define F_SETNOSIGPIPE          73      /* No SIGPIPE generated on EPIPE */
 313 #define F_GETNOSIGPIPE          74      /* Status of SIGPIPE for this fd */
 314
 315 #define F_TRANSCODEKEY          75      /* For some cases, we need to rewrap the key for AKS/MKB */
 316
 317 #define F_SINGLE_WRITER         76      /* file being written to a by single writer... if throttling enabled, writes */
 318                                         /* may be broken into smaller chunks with throttling in between */
 319
 320 #define F_GETPROTECTIONLEVEL    77      /* Get the protection version number for this filesystem */
 321
 322 #define F_FINDSIGS              78      /* Add detached code signatures (used by dyld for shared libs) */
 323
 324 #ifdef PRIVATE
 325 #define F_GETDEFAULTPROTLEVEL   79 /* Get the default protection level for the filesystem */
 326 #define F_MAKECOMPRESSED                80 /* Make the file compressed; truncate & toggle BSD bits */
 327 #define F_SET_GREEDY_MODE               81      /*
 328                                         * indicate to the filesystem/storage driver that the content to be
 329                                         * written should be written in greedy mode for additional speed at
 330                                         * the cost of storage efficiency. A nonzero value enables it, 0 disables it.
 331                                         */
 332
 333 #define F_SETIOTYPE             82  /*
 334                                                          * Use parameters to describe content being written to the FD. See
 335                                                          * flag definitions below for argument bits.
 336                                                          */
 337 #endif
 338
 339
 340 // FS-specific fcntl()'s numbers begin at 0x00010000 and go up
 341 #define FCNTL_FS_SPECIFIC_BASE  0x00010000
 342
 343 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 344
 345 #if __DARWIN_C_LEVEL >= 200809L
 346 #define F_DUPFD_CLOEXEC         67      /* mark the dup with FD_CLOEXEC */
 347 #endif
 348
 349 /* file descriptor flags (F_GETFD, F_SETFD) */
 350 #define FD_CLOEXEC      1               /* close-on-exec flag */
 351 #if PRIVATE
 352 #define FD_CLOFORK      2               /* close-on-fork flag */
 353 #endif
 354
 355 /* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */
 356 #define F_RDLCK         1               /* shared or read lock */
 357 #define F_UNLCK         2               /* unlock */
 358 #define F_WRLCK         3               /* exclusive or write lock */
 359 #ifdef KERNEL
 360 #define F_WAIT          0x010           /* Wait until lock is granted */
 361 #define F_FLOCK         0x020           /* Use flock(2) semantics for lock */
 362 #define F_POSIX         0x040           /* Use POSIX semantics for lock */
 363 #define F_PROV          0x080           /* Non-coalesced provisional lock */
 364 #define F_WAKE1_SAFE    0x100           /* its safe to only wake one waiter */
 365 #define F_ABORT         0x200           /* lock attempt aborted (force umount) */
 366 #endif
 367
 368 #if PRIVATE
 369 /*
 370  * ISOCHRONOUS attempts to sustain a minimum platform-dependent throughput
 371  * for the duration of the I/O delivered to the driver.
 372  */
 373 #define F_IOTYPE_ISOCHRONOUS 0x0001
 374 #endif
 375
 376 /*
 377  * [XSI] The values used for l_whence shall be defined as described
 378  * in <unistd.h>
 379  */
 380 #include <sys/_types/_seek_set.h>
 381
 382 /*
 383  * [XSI] The symbolic names for file modes for use as values of mode_t
 384  * shall be defined as described in <sys/stat.h>
 385  */
 386 #include <sys/_types/_s_ifmt.h>
 387
 388 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 389 /* allocate flags (F_PREALLOCATE) */
 390
 391 #define F_ALLOCATECONTIG  0x00000002    /* allocate contigious space */
 392 #define F_ALLOCATEALL     0x00000004    /* allocate all requested space or no space at all */
 393
 394 /* Position Modes (fst_posmode) for F_PREALLOCATE */
 395
 396 #define F_PEOFPOSMODE 3                 /* Make it past all of the SEEK pos modes so that */
 397                                         /* we can keep them in sync should we desire */
 398 #define F_VOLPOSMODE    4               /* specify volume starting postion */
 399 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 400
 401 /*
 402  * Advisory file segment locking data type -
 403  * information passed to system by user
 404  */
 405 struct flock {
 406         off_t   l_start;        /* starting offset */
 407         off_t   l_len;          /* len = 0 means until end of file */
 408         pid_t   l_pid;          /* lock owner */
 409         short   l_type;         /* lock type: read/write, etc. */
 410         short   l_whence;       /* type of l_start */
 411 };
 412
 413 #include <sys/_types/_timespec.h>
 414
 415 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 416 /*
 417  * Advisory file segment locking with time out -
 418  * Information passed to system by user for F_SETLKWTIMEOUT
 419  */
 420 struct flocktimeout {
 421         struct flock    fl;             /* flock passed for file locking */
 422         struct timespec timeout;        /* timespec struct for timeout */
 423 };
 424 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
 425
 426 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 427 /*
 428  * advisory file read data type -
 429  * information passed by user to system
 430  */
 431
 432 #ifdef KERNEL
 433 #pragma pack(4) /* prevent structure padding in kernel */
 434 #endif /* KERNEL */
 435
 436 struct radvisory {
 437        off_t   ra_offset;
 438        int     ra_count;
 439 };
 440
 441 #ifdef KERNEL
 442 #pragma pack()
 443 #endif /* KERNEL */
 444
 445 #ifndef KERNEL
 446 /** Information the user passes in to get the codeblobs out of the kernel */
 447 typedef struct fcodeblobs {
 448         void            *f_cd_hash;
 449         size_t          f_hash_size;
 450         void            *f_cd_buffer;
 451         size_t          f_cd_size;
 452         unsigned int    *f_out_size;
 453         int             f_arch;
 454         int             __padding;
 455 } fcodeblobs_t;
 456 #endif /* KERNEL */
 457
 458 #ifdef KERNEL
 459 typedef struct user32_fcodeblobs {
 460         user32_addr_t   f_cd_hash;
 461         user32_size_t   f_hash_size;
 462         user32_addr_t   f_cd_buffer;
 463         user32_size_t   f_cd_size;
 464         user32_addr_t   f_out_size;
 465         int             f_arch;
 466 } user32_fcodeblobs_t;
 467
 468 /* LP64 version of fcodeblobs */
 469 typedef struct user64_fcodeblobs {
 470         user64_addr_t   f_cd_hash;
 471         user64_size_t   f_hash_size;
 472         user64_addr_t   f_cd_buffer;
 473         user64_size_t   f_cd_size;
 474         user64_addr_t   f_out_size;
 475         int             f_arch;
 476         int             __padding;
 477 } user64_fcodeblobs_t;
 478
 479 /* kernel version of fcodeblobs */
 480 typedef struct user_fcodeblobs {
 481         user_addr_t     f_cd_hash;
 482         user_size_t     f_hash_size;
 483         user_addr_t     f_cd_buffer;
 484         user_size_t     f_cd_size;
 485         user_addr_t     f_out_size;
 486         int             f_arch;
 487 } user_fcodeblobs_t;
 488 #endif /* KERNEL */
 489
 490 /*
 491  * detached code signatures data type -
 492  * information passed by user to system used by F_ADDSIGS and F_ADDFILESIGS.
 493  * F_ADDFILESIGS is a shortcut for files that contain their own signature and
 494  * doesn't require mapping of the file in order to load the signature.
 495  */
 496 typedef struct fsignatures {
 497         off_t           fs_file_start;
 498         void            *fs_blob_start;
 499         size_t          fs_blob_size;
 500 } fsignatures_t;
 501 #ifdef KERNEL
 502 /* LP64 version of fsignatures.  all pointers
 503  * grow when we're dealing with a 64-bit process.
 504  * WARNING - keep in sync with fsignatures
 505  */
 506
 507 typedef struct user32_fsignatures {
 508         off_t           fs_file_start;
 509         user32_addr_t   fs_blob_start;
 510         user32_size_t   fs_blob_size;
 511 } user32_fsignatures_t;
 512
 513 typedef struct user_fsignatures {
 514         off_t           fs_file_start;  /* offset of Mach-O image in FAT file */
 515         user_addr_t     fs_blob_start;  /* F_ADDSIGS: mem address of signature*/
 516                                         /* F_ADDFILESIGS: offset of signature */
 517                                         /*                in Mach-O image     */
 518         user_size_t     fs_blob_size;   /* size of signature blob             */
 519 } user_fsignatures_t;
 520 #endif /* KERNEL */
 521
 522 /* lock operations for flock(2) */
 523 #define LOCK_SH         0x01            /* shared file lock */
 524 #define LOCK_EX         0x02            /* exclusive file lock */
 525 #define LOCK_NB         0x04            /* don't block when locking */
 526 #define LOCK_UN         0x08            /* unlock file */
 527
 528 /*  fstore_t type used by F_DEALLOCATE and F_PREALLOCATE commands */
 529
 530 typedef struct fstore {
 531         unsigned int fst_flags; /* IN: flags word */
 532         int     fst_posmode;    /* IN: indicates use of offset field */
 533         off_t   fst_offset;     /* IN: start of the region */
 534         off_t   fst_length;     /* IN: size of the region */
 535         off_t   fst_bytesalloc; /* OUT: number of bytes allocated */
 536 } fstore_t;
 537
 538 /* fbootstraptransfer_t used by F_READBOOTSTRAP and F_WRITEBOOTSTRAP commands */
 539
 540 typedef struct fbootstraptransfer {
 541   off_t fbt_offset;             /* IN: offset to start read/write */
 542   size_t fbt_length;          /* IN: number of bytes to transfer */
 543   void *fbt_buffer;             /* IN: buffer to be read/written */
 544 } fbootstraptransfer_t;
 545
 546 #ifdef KERNEL
 547 /* LP64 version of fbootstraptransfer.  all pointers
 548  * grow when we're dealing with a 64-bit process.
 549  * WARNING - keep in sync with fbootstraptransfer
 550  */
 551
 552 typedef struct user32_fbootstraptransfer {
 553   off_t fbt_offset;             /* IN: offset to start read/write */
 554   user32_size_t fbt_length;          /* IN: number of bytes to transfer */
 555   user32_addr_t fbt_buffer;             /* IN: buffer to be read/written */
 556 } user32_fbootstraptransfer_t;
 557
 558 typedef struct user_fbootstraptransfer {
 559   off_t fbt_offset;             /* IN: offset to start read/write */
 560   user_size_t fbt_length;               /* IN: number of bytes to transfer */
 561   user_addr_t fbt_buffer;               /* IN: buffer to be read/written */
 562 } user_fbootstraptransfer_t;
 563
 564 #endif // KERNEL
 565
 566 /*
 567  * For F_LOG2PHYS this information is passed back to user
 568  * Currently only devoffset is returned - that is the VOP_BMAP
 569  * result - the disk device address corresponding to the
 570  * current file offset (likely set with an lseek).
 571  *
 572  * The flags could hold an indication of whether the # of
 573  * contiguous bytes reflects the true extent length on disk,
 574  * or is an advisory value that indicates there is at least that
 575  * many bytes contiguous.  For some filesystems it might be too
 576  * inefficient to provide anything beyond the advisory value.
 577  * Flags and contiguous bytes return values are not yet implemented.
 578  * For them the fcntl will nedd to switch from using BMAP to CMAP
 579  * and a per filesystem type flag will be needed to interpret the
 580  * contiguous bytes count result from CMAP.
 581  *
 582  * F_LOG2PHYS_EXT is a variant of F_LOG2PHYS that uses a passed in
 583  * file offset and length instead of the current file offset.
 584  * F_LOG2PHYS_EXT operates on the same structure as F_LOG2PHYS, but
 585  * treats it as an in/out.
 586  */
 587 #pragma pack(4)
 588
 589 struct log2phys {
 590         unsigned int    l2p_flags;       /* unused so far */
 591         off_t           l2p_contigbytes; /* F_LOG2PHYS:     unused so far */
 592                                          /* F_LOG2PHYS_EXT: IN:  number of bytes to be queried */
 593                                          /*                 OUT: number of contiguous bytes at this position */
 594         off_t           l2p_devoffset;   /* F_LOG2PHYS:     OUT: bytes into device */
 595                                          /* F_LOG2PHYS_EXT: IN:  bytes into file */
 596                                          /*                 OUT: bytes into device */
 597 };
 598
 599 #pragma pack()
 600
 601 #define O_POPUP    0x80000000   /* force window to popup on open */
 602 #define O_ALERT    0x20000000   /* small, clean popup window */
 603
 604 #ifdef PRIVATE
 605 /*
 606  * SPI: Argument data for F_OPENFROM
 607  */
 608 struct fopenfrom {
 609         unsigned int    o_flags;        /* same as open(2) */
 610         mode_t          o_mode;         /* same as open(2) */
 611         char *          o_pathname;     /* relative pathname */
 612 };
 613
 614 #ifdef KERNEL
 615 /*
 616  * LP64 version of fopenfrom.  Memory pointers
 617  * grow when we're dealing with a 64-bit process.
 618  *
 619  * WARNING - keep in sync with fopenfrom (above)
 620  */
 621 struct user32_fopenfrom {
 622         unsigned int    o_flags;
 623         mode_t          o_mode;
 624         user32_addr_t   o_pathname;
 625 };
 626
 627 struct user_fopenfrom {
 628         unsigned int    o_flags;
 629         mode_t          o_mode;
 630         user_addr_t     o_pathname;
 631 };
 632 #endif /* KERNEL */
 633
 634 #endif /* PRIVATE */
 635
 636 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 637
 638 #ifndef KERNEL
 639
 640 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 641
 642 #include <sys/_types/_filesec_t.h>
 643
 644 typedef enum {
 645         FILESEC_OWNER = 1,
 646         FILESEC_GROUP = 2,
 647         FILESEC_UUID = 3,
 648         FILESEC_MODE = 4,
 649         FILESEC_ACL = 5,
 650         FILESEC_GRPUUID = 6,
 651
 652 /* XXX these are private to the implementation */
 653         FILESEC_ACL_RAW = 100,
 654         FILESEC_ACL_ALLOCSIZE = 101
 655 } filesec_property_t;
 656
 657 /* XXX backwards compatibility */
 658 #define FILESEC_GUID FILESEC_UUID
 659 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 660
 661 __BEGIN_DECLS
 662 int     open(const char *, int, ...) __DARWIN_ALIAS_C(open);
 663 #if __DARWIN_C_LEVEL >= 200809L
 664 int     openat(int, const char *, int, ...) __DARWIN_NOCANCEL(openat) __OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0);
 665 #endif
 666 int     creat(const char *, mode_t) __DARWIN_ALIAS_C(creat);
 667 int     fcntl(int, int, ...) __DARWIN_ALIAS_C(fcntl);
 668 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 669
 670 #ifdef PRIVATE
 671 /*
 672  * These definitions are retained temporarily for compatibility.
 673  * If you want to use fileports, please use
 674  *      #include <sys/fileport.h>
 675  * or
 676  *      #include <System/sys/fileport.h>
 677  */
 678 #ifndef _FILEPORT_T
 679 #define _FILEPORT_T
 680 typedef __darwin_mach_port_t fileport_t;
 681 #define FILEPORT_NULL ((fileport_t)0)
 682 #endif /* _FILEPORT_T */
 683
 684 int     fileport_makeport(int, fileport_t*);
 685 int     fileport_makefd(fileport_t);
 686 #endif /* PRIVATE */
 687 int     openx_np(const char *, int, filesec_t);
 688 /*
 689  * data-protected non-portable open(2) :
 690  int open_dprotected_np(user_addr_t path, int flags, int class, int dpflags, int mode)
 691  */
 692 int open_dprotected_np ( const char *, int, int, int, ...);
 693 int     flock(int, int);
 694 filesec_t filesec_init(void);
 695 filesec_t filesec_dup(filesec_t);
 696 void    filesec_free(filesec_t);
 697 int     filesec_get_property(filesec_t, filesec_property_t, void *);
 698 int     filesec_query_property(filesec_t, filesec_property_t, int *);
 699 int     filesec_set_property(filesec_t, filesec_property_t, const void *);
 700 int     filesec_unset_property(filesec_t, filesec_property_t) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2);
 701 #define _FILESEC_UNSET_PROPERTY ((void *)0)
 702 #define _FILESEC_REMOVE_ACL     ((void *)1)
 703 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 704 __END_DECLS
 705 #endif
 706
 707 #endif /* !_SYS_FCNTL_H_ */