bsd/sys/fcntl.h

   1 /*
   2  * Copyright (c) 2000-2007 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 #ifndef _SIZE_T
  86 #define _SIZE_T
  87 typedef __darwin_size_t size_t;
  88 #endif
  89
  90 #ifndef _MODE_T
  91 typedef __darwin_mode_t mode_t;
  92 #define _MODE_T
  93 #endif
  94
  95 #ifndef _OFF_T
  96 typedef __darwin_off_t  off_t;
  97 #define _OFF_T
  98 #endif
  99
 100 #ifndef _PID_T
 101 typedef __darwin_pid_t  pid_t;
 102 #define _PID_T
 103 #endif
 104
 105 /*
 106  * File status flags: these are used by open(2), fcntl(2).
 107  * They are also used (indirectly) in the kernel file structure f_flags,
 108  * which is a superset of the open/fcntl flags.  Open flags and f_flags
 109  * are inter-convertible using OFLAGS(fflags) and FFLAGS(oflags).
 110  * Open/fcntl flags begin with O_; kernel-internal flags begin with F.
 111  */
 112 /* open-only flags */
 113 #define O_RDONLY        0x0000          /* open for reading only */
 114 #define O_WRONLY        0x0001          /* open for writing only */
 115 #define O_RDWR          0x0002          /* open for reading and writing */
 116 #define O_ACCMODE       0x0003          /* mask for above modes */
 117
 118 /*
 119  * Kernel encoding of open mode; separate read and write bits that are
 120  * independently testable: 1 greater than the above.
 121  *
 122  * XXX
 123  * FREAD and FWRITE are excluded from the #ifdef KERNEL so that TIOCFLUSH,
 124  * which was documented to use FREAD/FWRITE, continues to work.
 125  */
 126 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 127 #define FREAD           0x0001
 128 #define FWRITE          0x0002
 129 #endif
 130 #define O_NONBLOCK      0x0004          /* no delay */
 131 #define O_APPEND        0x0008          /* set append mode */
 132 #ifndef O_SYNC          /* allow simultaneous inclusion of <aio.h> */
 133 #define O_SYNC          0x0080          /* synch I/O file integrity */
 134 #endif
 135 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 136 #define O_SHLOCK        0x0010          /* open with shared file lock */
 137 #define O_EXLOCK        0x0020          /* open with exclusive file lock */
 138 #define O_ASYNC         0x0040          /* signal pgrp when data ready */
 139 #define O_FSYNC         O_SYNC          /* source compatibility: do not use */
 140 #define O_NOFOLLOW  0x0100      /* don't follow symlinks */
 141 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 142 #define O_CREAT         0x0200          /* create if nonexistant */
 143 #define O_TRUNC         0x0400          /* truncate to zero length */
 144 #define O_EXCL          0x0800          /* error if already exists */
 145 #ifdef KERNEL
 146 #define FMARK           0x1000          /* mark during gc() */
 147 #define FDEFER          0x2000          /* defer for next gc pass */
 148 #define FHASLOCK        0x4000          /* descriptor holds advisory lock */
 149 #endif
 150 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 151 #define O_EVTONLY       0x8000          /* descriptor requested for event notifications only */
 152 #endif
 153
 154 #ifdef KERNEL
 155 #define FWASWRITTEN     0x10000         /* descriptor was written */
 156 #endif
 157
 158 #define O_NOCTTY        0x20000         /* don't assign controlling terminal */
 159
 160 #ifdef KERNEL
 161 #define FNOCACHE        0x40000         /* fcntl(F_NOCACHE, 1) */
 162 #define FNORDAHEAD      0x80000         /* fcntl(F_RDAHEAD, 0) */
 163 #endif
 164
 165 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 166 #define O_DIRECTORY     0x100000
 167 #define O_SYMLINK       0x200000        /* allow open of a symlink */
 168 #endif
 169
 170 #ifndef O_DSYNC         /* allow simultaneous inclusion of <aio.h> */
 171 #define         O_DSYNC 0x400000        /* synch I/O data integrity */
 172 #endif
 173
 174 #ifdef KERNEL
 175 #define FNODIRECT       0x800000        /* fcntl(F_NODIRECT, 1) */
 176 #endif
 177
 178 #if __DARWIN_C_LEVEL >= 200809L
 179 #define O_CLOEXEC       0x1000000       /* implicitly set FD_CLOEXEC */
 180 #endif
 181
 182 #ifdef KERNEL
 183 /* convert from open() flags to/from fflags; convert O_RD/WR to FREAD/FWRITE */
 184 #define FFLAGS(oflags)  ((oflags) + 1)
 185 #define OFLAGS(fflags)  ((fflags) - 1)
 186
 187 /* bits to save after open */
 188 #define FMASK           (FREAD|FWRITE|FAPPEND|FASYNC|FFSYNC|FFDSYNC|FNONBLOCK)
 189 /* bits settable by fcntl(F_SETFL, ...) */
 190 #define FCNTLFLAGS      (FAPPEND|FASYNC|FFSYNC|FFDSYNC|FNONBLOCK)
 191 #endif
 192
 193 /*
 194  * The O_* flags used to have only F* names, which were used in the kernel
 195  * and by fcntl.  We retain the F* names for the kernel f_flags field
 196  * and for backward compatibility for fcntl.
 197  */
 198 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 199 #define FAPPEND         O_APPEND        /* kernel/compat */
 200 #define FASYNC          O_ASYNC         /* kernel/compat */
 201 #define FFSYNC          O_FSYNC         /* kernel */
 202 #define FFDSYNC         O_DSYNC         /* kernel */
 203 #define FNONBLOCK       O_NONBLOCK      /* kernel */
 204 #define FNDELAY         O_NONBLOCK      /* compat */
 205 #define O_NDELAY        O_NONBLOCK      /* compat */
 206 #endif
 207
 208 /*
 209  * Flags used for copyfile(2)
 210  */
 211
 212 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 213 #define CPF_OVERWRITE 1
 214 #define CPF_IGNORE_MODE 2
 215 #define CPF_MASK (CPF_OVERWRITE|CPF_IGNORE_MODE)
 216 #endif
 217
 218 /*
 219  * Constants used for fcntl(2)
 220  */
 221
 222 /* command values */
 223 #define F_DUPFD         0               /* duplicate file descriptor */
 224 #define F_GETFD         1               /* get file descriptor flags */
 225 #define F_SETFD         2               /* set file descriptor flags */
 226 #define F_GETFL         3               /* get file status flags */
 227 #define F_SETFL         4               /* set file status flags */
 228 #define F_GETOWN        5               /* get SIGIO/SIGURG proc/pgrp */
 229 #define F_SETOWN        6               /* set SIGIO/SIGURG proc/pgrp */
 230 #define F_GETLK         7               /* get record locking information */
 231 #define F_SETLK         8               /* set record locking information */
 232 #define F_SETLKW        9               /* F_SETLK; wait if blocked */
 233 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 234 #define F_FLUSH_DATA    40
 235 #define F_CHKCLEAN      41              /* Used for regression test */
 236 #define F_PREALLOCATE   42              /* Preallocate storage */
 237 #define F_SETSIZE       43              /* Truncate a file without zeroing space */
 238 #define F_RDADVISE      44              /* Issue an advisory read async with no copy to user */
 239 #define F_RDAHEAD       45              /* turn read ahead off/on for this fd */
 240 #define F_READBOOTSTRAP 46              /* Read bootstrap from disk */
 241 #define F_WRITEBOOTSTRAP 47             /* Write bootstrap on disk */
 242 #define F_NOCACHE       48              /* turn data caching off/on for this fd */
 243 #define F_LOG2PHYS      49              /* file offset to device offset */
 244 #define F_GETPATH       50              /* return the full path of the fd */
 245 #define F_FULLFSYNC     51              /* fsync + ask the drive to flush to the media */
 246 #define F_PATHPKG_CHECK 52              /* find which component (if any) is a package */
 247 #define F_FREEZE_FS     53              /* "freeze" all fs operations */
 248 #define F_THAW_FS       54              /* "thaw" all fs operations */
 249 #define F_GLOBAL_NOCACHE 55             /* turn data caching off/on (globally) for this file */
 250
 251 #ifdef PRIVATE
 252 #define F_OPENFROM      56              /* SPI: open a file relative to fd (must be a dir) */
 253 #define F_UNLINKFROM    57              /* SPI: open a file relative to fd (must be a dir) */
 254 #define F_CHECK_OPENEVT 58              /* SPI: if a process is marked OPENEVT, or in O_EVTONLY on opens of this vnode */
 255 #endif /* PRIVATE */
 256
 257 #define F_ADDSIGS       59              /* add detached signatures */
 258
 259 #define F_MARKDEPENDENCY 60             /* this process hosts the device supporting the fs backing this fd */
 260
 261 #define F_ADDFILESIGS   61              /* add signature from same file (used by dyld for shared libs) */
 262
 263 #define F_NODIRECT      62              /* used in conjunction with F_NOCACHE to indicate that DIRECT, synchonous writes */
 264                                         /* should not be used (i.e. its ok to temporaily create cached pages) */
 265
 266 #define F_GETPROTECTIONCLASS    63              /* Get the protection class of a file from the EA, returns int */
 267 #define F_SETPROTECTIONCLASS    64              /* Set the protection class of a file for the EA, requires int */
 268
 269 #define F_LOG2PHYS_EXT  65              /* file offset to device offset, extended */
 270
 271 #define F_GETLKPID              66              /* get record locking information, per-process */
 272
 273 #ifdef PRIVATE
 274 #define F_MOVEDATAEXTENTS       69      /* Swap only the data associated with two files */
 275 #endif
 276
 277 #define F_SETBACKINGSTORE       70      /* Mark the file as being the backing store for another filesystem */
 278 #define F_GETPATH_MTMINFO       71      /* return the full path of the FD, but error in specific mtmd circumstances */
 279
 280 #define F_SETNOSIGPIPE          73      /* No SIGPIPE generated on EPIPE */
 281 #define F_GETNOSIGPIPE          74      /* Status of SIGPIPE for this fd */
 282
 283 // FS-specific fcntl()'s numbers begin at 0x00010000 and go up
 284 #define FCNTL_FS_SPECIFIC_BASE  0x00010000
 285
 286 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 287
 288 #if __DARWIN_C_LEVEL >= 200809L
 289 #define F_DUPFD_CLOEXEC         67      /* mark the dup with FD_CLOEXEC */
 290 #endif
 291
 292 /* file descriptor flags (F_GETFD, F_SETFD) */
 293 #define FD_CLOEXEC      1               /* close-on-exec flag */
 294
 295 /* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */
 296 #define F_RDLCK         1               /* shared or read lock */
 297 #define F_UNLCK         2               /* unlock */
 298 #define F_WRLCK         3               /* exclusive or write lock */
 299 #ifdef KERNEL
 300 #define F_WAIT          0x010           /* Wait until lock is granted */
 301 #define F_FLOCK         0x020           /* Use flock(2) semantics for lock */
 302 #define F_POSIX         0x040           /* Use POSIX semantics for lock */
 303 #define F_PROV          0x080           /* Non-coelesced provisional lock */
 304 #define F_WAKE1_SAFE    0x100           /* its safe to only wake one waiter */
 305 #endif
 306
 307 /*
 308  * [XSI] The values used for l_whence shall be defined as described
 309  * in <unistd.h>
 310  */
 311 #ifndef SEEK_SET
 312 #define SEEK_SET        0       /* set file offset to offset */
 313 #define SEEK_CUR        1       /* set file offset to current plus offset */
 314 #define SEEK_END        2       /* set file offset to EOF plus offset */
 315 #endif  /* !SEEK_SET */
 316
 317 /*
 318  * [XSI] The symbolic names for file modes for use as values of mode_t
 319  * shall be defined as described in <sys/stat.h>
 320  */
 321 #ifndef S_IFMT
 322 /* File type */
 323 #define S_IFMT          0170000         /* [XSI] type of file mask */
 324 #define S_IFIFO         0010000         /* [XSI] named pipe (fifo) */
 325 #define S_IFCHR         0020000         /* [XSI] character special */
 326 #define S_IFDIR         0040000         /* [XSI] directory */
 327 #define S_IFBLK         0060000         /* [XSI] block special */
 328 #define S_IFREG         0100000         /* [XSI] regular */
 329 #define S_IFLNK         0120000         /* [XSI] symbolic link */
 330 #define S_IFSOCK        0140000         /* [XSI] socket */
 331 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 332 #define S_IFWHT         0160000         /* OBSOLETE: whiteout */
 333 #endif
 334
 335 /* File mode */
 336 /* Read, write, execute/search by owner */
 337 #define S_IRWXU         0000700         /* [XSI] RWX mask for owner */
 338 #define S_IRUSR         0000400         /* [XSI] R for owner */
 339 #define S_IWUSR         0000200         /* [XSI] W for owner */
 340 #define S_IXUSR         0000100         /* [XSI] X for owner */
 341 /* Read, write, execute/search by group */
 342 #define S_IRWXG         0000070         /* [XSI] RWX mask for group */
 343 #define S_IRGRP         0000040         /* [XSI] R for group */
 344 #define S_IWGRP         0000020         /* [XSI] W for group */
 345 #define S_IXGRP         0000010         /* [XSI] X for group */
 346 /* Read, write, execute/search by others */
 347 #define S_IRWXO         0000007         /* [XSI] RWX mask for other */
 348 #define S_IROTH         0000004         /* [XSI] R for other */
 349 #define S_IWOTH         0000002         /* [XSI] W for other */
 350 #define S_IXOTH         0000001         /* [XSI] X for other */
 351
 352 #define S_ISUID         0004000         /* [XSI] set user id on execution */
 353 #define S_ISGID         0002000         /* [XSI] set group id on execution */
 354 #define S_ISVTX         0001000         /* [XSI] directory restrcted delete */
 355
 356 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 357 #define S_ISTXT         S_ISVTX         /* sticky bit: not supported */
 358 #define S_IREAD         S_IRUSR         /* backward compatability */
 359 #define S_IWRITE        S_IWUSR         /* backward compatability */
 360 #define S_IEXEC         S_IXUSR         /* backward compatability */
 361 #endif
 362 #endif  /* !S_IFMT */
 363
 364 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 365 /* allocate flags (F_PREALLOCATE) */
 366
 367 #define F_ALLOCATECONTIG  0x00000002    /* allocate contigious space */
 368 #define F_ALLOCATEALL     0x00000004    /* allocate all requested space or no space at all */
 369
 370 /* Position Modes (fst_posmode) for F_PREALLOCATE */
 371
 372 #define F_PEOFPOSMODE 3                 /* Make it past all of the SEEK pos modes so that */
 373                                         /* we can keep them in sync should we desire */
 374 #define F_VOLPOSMODE    4               /* specify volume starting postion */
 375 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 376
 377 /*
 378  * Advisory file segment locking data type -
 379  * information passed to system by user
 380  */
 381 struct flock {
 382         off_t   l_start;        /* starting offset */
 383         off_t   l_len;          /* len = 0 means until end of file */
 384         pid_t   l_pid;          /* lock owner */
 385         short   l_type;         /* lock type: read/write, etc. */
 386         short   l_whence;       /* type of l_start */
 387 };
 388
 389
 390 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 391 /*
 392  * advisory file read data type -
 393  * information passed by user to system
 394  */
 395
 396 #ifdef KERNEL
 397 #pragma pack(4) /* prevent structure padding in kernel */
 398 #endif /* KERNEL */
 399
 400 struct radvisory {
 401        off_t   ra_offset;
 402        int     ra_count;
 403 };
 404
 405 #ifdef KERNEL
 406 #pragma pack()
 407 #endif /* KERNEL */
 408
 409 /*
 410  * detached code signatures data type -
 411  * information passed by user to system used by F_ADDSIGS and F_ADDFILESIGS.
 412  * F_ADDFILESIGS is a shortcut for files that contain their own signature and
 413  * doesn't require mapping of the file in order to load the signature.
 414  */
 415 typedef struct fsignatures {
 416         off_t           fs_file_start;
 417         void            *fs_blob_start;
 418         size_t          fs_blob_size;
 419 } fsignatures_t;
 420 #ifdef KERNEL
 421 /* LP64 version of fsignatures.  all pointers
 422  * grow when we're dealing with a 64-bit process.
 423  * WARNING - keep in sync with fsignatures
 424  */
 425
 426 typedef struct user32_fsignatures {
 427         off_t           fs_file_start;
 428         user32_addr_t   fs_blob_start;
 429         user32_size_t   fs_blob_size;
 430 } user32_fsignatures_t;
 431
 432 typedef struct user_fsignatures {
 433         off_t           fs_file_start;  /* offset of Mach-O image in FAT file */
 434         user_addr_t     fs_blob_start;  /* F_ADDSIGS: mem address of signature*/
 435                                         /* F_ADDFILESIGS: offset of signature */
 436                                         /*                in Mach-O image     */
 437         user_size_t     fs_blob_size;   /* size of signature blob             */
 438 } user_fsignatures_t;
 439 #endif /* KERNEL */
 440
 441 /* lock operations for flock(2) */
 442 #define LOCK_SH         0x01            /* shared file lock */
 443 #define LOCK_EX         0x02            /* exclusive file lock */
 444 #define LOCK_NB         0x04            /* don't block when locking */
 445 #define LOCK_UN         0x08            /* unlock file */
 446
 447 /*  fstore_t type used by F_DEALLOCATE and F_PREALLOCATE commands */
 448
 449 typedef struct fstore {
 450         unsigned int fst_flags; /* IN: flags word */
 451         int     fst_posmode;    /* IN: indicates use of offset field */
 452         off_t   fst_offset;     /* IN: start of the region */
 453         off_t   fst_length;     /* IN: size of the region */
 454         off_t   fst_bytesalloc; /* OUT: number of bytes allocated */
 455 } fstore_t;
 456
 457 /* fbootstraptransfer_t used by F_READBOOTSTRAP and F_WRITEBOOTSTRAP commands */
 458
 459 typedef struct fbootstraptransfer {
 460   off_t fbt_offset;             /* IN: offset to start read/write */
 461   size_t fbt_length;          /* IN: number of bytes to transfer */
 462   void *fbt_buffer;             /* IN: buffer to be read/written */
 463 } fbootstraptransfer_t;
 464
 465 #ifdef KERNEL
 466 /* LP64 version of fbootstraptransfer.  all pointers
 467  * grow when we're dealing with a 64-bit process.
 468  * WARNING - keep in sync with fbootstraptransfer
 469  */
 470
 471 typedef struct user32_fbootstraptransfer {
 472   off_t fbt_offset;             /* IN: offset to start read/write */
 473   user32_size_t fbt_length;          /* IN: number of bytes to transfer */
 474   user32_addr_t fbt_buffer;             /* IN: buffer to be read/written */
 475 } user32_fbootstraptransfer_t;
 476
 477 typedef struct user_fbootstraptransfer {
 478   off_t fbt_offset;             /* IN: offset to start read/write */
 479   user_size_t fbt_length;               /* IN: number of bytes to transfer */
 480   user_addr_t fbt_buffer;               /* IN: buffer to be read/written */
 481 } user_fbootstraptransfer_t;
 482
 483 #endif // KERNEL
 484
 485 /*
 486  * For F_LOG2PHYS this information is passed back to user
 487  * Currently only devoffset is returned - that is the VOP_BMAP
 488  * result - the disk device address corresponding to the
 489  * current file offset (likely set with an lseek).
 490  *
 491  * The flags could hold an indication of whether the # of
 492  * contiguous bytes reflects the true extent length on disk,
 493  * or is an advisory value that indicates there is at least that
 494  * many bytes contiguous.  For some filesystems it might be too
 495  * inefficient to provide anything beyond the advisory value.
 496  * Flags and contiguous bytes return values are not yet implemented.
 497  * For them the fcntl will nedd to switch from using BMAP to CMAP
 498  * and a per filesystem type flag will be needed to interpret the
 499  * contiguous bytes count result from CMAP.
 500  *
 501  * F_LOG2PHYS_EXT is a variant of F_LOG2PHYS that uses a passed in
 502  * file offset and length instead of the current file offset.
 503  * F_LOG2PHYS_EXT operates on the same structure as F_LOG2PHYS, but
 504  * treats it as an in/out.
 505  */
 506 #pragma pack(4)
 507
 508 struct log2phys {
 509         unsigned int    l2p_flags;       /* unused so far */
 510         off_t           l2p_contigbytes; /* F_LOG2PHYS:     unused so far */
 511                                          /* F_LOG2PHYS_EXT: IN:  number of bytes to be queried */
 512                                          /*                 OUT: number of contiguous bytes at this position */
 513         off_t           l2p_devoffset;   /* F_LOG2PHYS:     OUT: bytes into device */
 514                                          /* F_LOG2PHYS_EXT: IN:  bytes into file */
 515                                          /*                 OUT: bytes into device */
 516 };
 517
 518 #pragma pack()
 519
 520 #define O_POPUP    0x80000000   /* force window to popup on open */
 521 #define O_ALERT    0x20000000   /* small, clean popup window */
 522
 523 #ifdef PRIVATE
 524 /*
 525  * SPI: Argument data for F_OPENFROM
 526  */
 527 struct fopenfrom {
 528         unsigned int    o_flags;        /* same as open(2) */
 529         mode_t          o_mode;         /* same as open(2) */
 530         char *          o_pathname;     /* relative pathname */
 531 };
 532
 533 #ifdef KERNEL
 534 /*
 535  * LP64 version of fopenfrom.  Memory pointers
 536  * grow when we're dealing with a 64-bit process.
 537  *
 538  * WARNING - keep in sync with fopenfrom (above)
 539  */
 540 struct user32_fopenfrom {
 541         unsigned int    o_flags;
 542         mode_t          o_mode;
 543         user32_addr_t   o_pathname;
 544 };
 545
 546 struct user_fopenfrom {
 547         unsigned int    o_flags;
 548         mode_t          o_mode;
 549         user_addr_t     o_pathname;
 550 };
 551 #endif /* KERNEL */
 552
 553 #endif /* PRIVATE */
 554
 555 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 556
 557 #ifndef KERNEL
 558
 559 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 560 #ifndef _FILESEC_T
 561 struct _filesec;
 562 typedef struct _filesec *filesec_t;
 563 #define _FILESEC_T
 564 #endif
 565 typedef enum {
 566         FILESEC_OWNER = 1,
 567         FILESEC_GROUP = 2,
 568         FILESEC_UUID = 3,
 569         FILESEC_MODE = 4,
 570         FILESEC_ACL = 5,
 571         FILESEC_GRPUUID = 6,
 572
 573 /* XXX these are private to the implementation */
 574         FILESEC_ACL_RAW = 100,
 575         FILESEC_ACL_ALLOCSIZE = 101
 576 } filesec_property_t;
 577
 578 /* XXX backwards compatibility */
 579 #define FILESEC_GUID FILESEC_UUID
 580 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
 581
 582 __BEGIN_DECLS
 583 int     open(const char *, int, ...) __DARWIN_ALIAS_C(open);
 584 int     creat(const char *, mode_t) __DARWIN_ALIAS_C(creat);
 585 int     fcntl(int, int, ...) __DARWIN_ALIAS_C(fcntl);
 586 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
 587
 588 #ifdef PRIVATE
 589 /*
 590  * These definitions are retained temporarily for compatibility.
 591  * If you want to use fileports, please use
 592  *      #include <sys/fileport.h>
 593  * or
 594  *      #include <System/sys/fileport.h>
 595  */
 596 #ifndef _FILEPORT_T
 597 #define _FILEPORT_T
 598 typedef __darwin_mach_port_t fileport_t;
 599 #define FILEPORT_NULL ((fileport_t)0)
 600 #endif /* _FILEPORT_T */
 601
 602 int     fileport_makeport(int, fileport_t*);
 603 int     fileport_makefd(fileport_t);
 604 #endif /* PRIVATE */
 605 int     openx_np(const char *, int, filesec_t);
 606 int     flock(int, int);
 607 filesec_t filesec_init(void);
 608 filesec_t filesec_dup(filesec_t);
 609 void    filesec_free(filesec_t);
 610 int     filesec_get_property(filesec_t, filesec_property_t, void *);
 611 int     filesec_query_property(filesec_t, filesec_property_t, int *);
 612 int     filesec_set_property(filesec_t, filesec_property_t, const void *);
 613 int     filesec_unset_property(filesec_t, filesec_property_t) __OSX_AVAILABLE_STARTING(__MAC_10_6, __IPHONE_3_2);
 614 #define _FILESEC_UNSET_PROPERTY ((void *)0)
 615 #define _FILESEC_REMOVE_ACL     ((void *)1)
 616 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 617 __END_DECLS
 618 #endif
 619
 620 #endif /* !_SYS_FCNTL_H_ */