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