1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 #ifndef _SYS_FCNTL_H 41 #define _SYS_FCNTL_H 42 43 #include <sys/feature_tests.h> 44 45 #include <sys/types.h> 46 47 #ifdef __cplusplus 48 extern "C" { 49 #endif 50 51 /* 52 * Flag values accessible to open(2) and fcntl(2) 53 * (the first three can only be set by open(2)). 54 */ 55 #define O_RDONLY 0 56 #define O_WRONLY 1 57 #define O_RDWR 2 58 #if defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) 59 #define O_NDELAY 0x04 /* non-blocking I/O */ 60 #endif /* defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) */ 61 #define O_APPEND 0x08 /* append (writes guaranteed at the end) */ 62 #if defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) || \ 63 (_POSIX_C_SOURCE > 2) || defined(_XOPEN_SOURCE) 64 #define O_SYNC 0x10 /* synchronized file update option */ 65 #define O_DSYNC 0x40 /* synchronized data update option */ 66 #define O_RSYNC 0x8000 /* synchronized file update option */ 67 /* defines read/write file integrity */ 68 #endif /* defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) ... */ 69 #define O_NONBLOCK 0x80 /* non-blocking I/O (POSIX) */ 70 #ifdef SUN_SRC_COMPAT 71 #define O_PRIV 0x1000 /* Private access to file */ 72 #endif /* SUN_SRC_COMPAT */ 73 #ifdef _LARGEFILE_SOURCE 74 #define O_LARGEFILE 0x2000 75 #endif 76 77 /* 78 * Flag values accessible only to open(2). 79 */ 80 #define O_CREAT 0x100 /* open with file create (uses third arg) */ 81 #define O_TRUNC 0x200 /* open with truncation */ 82 #define O_EXCL 0x400 /* exclusive open */ 83 #define O_NOCTTY 0x800 /* don't allocate controlling tty (POSIX) */ 84 #define O_XATTR 0x4000 /* extended attribute */ 85 #define O_NOFOLLOW 0x20000 /* don't follow symlinks */ 86 #define O_NOLINKS 0x40000 /* don't allow multiple hard links */ 87 88 /* 89 * fcntl(2) requests 90 * 91 * N.B.: values are not necessarily assigned sequentially below. 92 */ 93 #define F_DUPFD 0 /* Duplicate fildes */ 94 #define F_GETFD 1 /* Get fildes flags */ 95 #define F_SETFD 2 /* Set fildes flags */ 96 #define F_GETFL 3 /* Get file flags */ 97 #define F_GETXFL 45 /* Get file flags including open-only flags */ 98 #define F_SETFL 4 /* Set file flags */ 99 100 /* 101 * Applications that read /dev/mem must be built like the kernel. A 102 * new symbol "_KMEMUSER" is defined for this purpose. 103 */ 104 #if defined(_KERNEL) || defined(_KMEMUSER) 105 #define F_O_GETLK 5 /* SVR3 Get file lock (need for rfs, across */ 106 /* the wire compatibility */ 107 /* clustering: lock id contains both per-node sysid and node id */ 108 #define SYSIDMASK 0x0000ffff 109 #define GETSYSID(id) (id & SYSIDMASK) 110 #define NODEIDMASK 0xffff0000 111 #define BITS_IN_SYSID 16 112 #define GETNLMID(sysid) ((int)(((uint_t)(sysid) & NODEIDMASK) >> \ 113 BITS_IN_SYSID)) 114 115 /* Clustering: Macro used for PXFS locks */ 116 #define GETPXFSID(sysid) ((int)(((uint_t)(sysid) & NODEIDMASK) >> \ 117 BITS_IN_SYSID)) 118 #endif /* defined(_KERNEL) */ 119 120 #define F_CHKFL 8 /* Unused */ 121 #define F_DUP2FD 9 /* Duplicate fildes at third arg */ 122 123 #define F_ISSTREAM 13 /* Is the file desc. a stream ? */ 124 #define F_PRIV 15 /* Turn on private access to file */ 125 #define F_NPRIV 16 /* Turn off private access to file */ 126 #define F_QUOTACTL 17 /* UFS quota call */ 127 #define F_BLOCKS 18 /* Get number of BLKSIZE blocks allocated */ 128 #define F_BLKSIZE 19 /* Get optimal I/O block size */ 129 /* 130 * Numbers 20-22 have been removed and should not be reused. 131 */ 132 #define F_GETOWN 23 /* Get owner (socket emulation) */ 133 #define F_SETOWN 24 /* Set owner (socket emulation) */ 134 #define F_REVOKE 25 /* Object reuse revoke access to file desc. */ 135 136 #define F_HASREMOTELOCKS 26 /* Does vp have NFS locks; private to lock */ 137 /* manager */ 138 139 /* 140 * Commands that refer to flock structures. The argument types differ between 141 * the large and small file environments; therefore, the #defined values must 142 * as well. 143 * The NBMAND forms are private and should not be used. 144 */ 145 146 #if defined(_LP64) || _FILE_OFFSET_BITS == 32 147 /* "Native" application compilation environment */ 148 #define F_SETLK 6 /* Set file lock */ 149 #define F_SETLKW 7 /* Set file lock and wait */ 150 #define F_ALLOCSP 10 /* Allocate file space */ 151 #define F_FREESP 11 /* Free file space */ 152 #define F_GETLK 14 /* Get file lock */ 153 #define F_SETLK_NBMAND 42 /* private */ 154 #else 155 /* ILP32 large file application compilation environment version */ 156 #define F_SETLK 34 /* Set file lock */ 157 #define F_SETLKW 35 /* Set file lock and wait */ 158 #define F_ALLOCSP 28 /* Alllocate file space */ 159 #define F_FREESP 27 /* Free file space */ 160 #define F_GETLK 33 /* Get file lock */ 161 #define F_SETLK_NBMAND 44 /* private */ 162 #endif /* _LP64 || _FILE_OFFSET_BITS == 32 */ 163 164 #if defined(_LARGEFILE64_SOURCE) 165 166 #if !defined(_LP64) || defined(_KERNEL) 167 /* 168 * transitional large file interface version 169 * These are only valid in a 32 bit application compiled with large files 170 * option, for source compatibility, the 64-bit versions are mapped back 171 * to the native versions. 172 */ 173 #define F_SETLK64 34 /* Set file lock */ 174 #define F_SETLKW64 35 /* Set file lock and wait */ 175 #define F_ALLOCSP64 28 /* Allocate file space */ 176 #define F_FREESP64 27 /* Free file space */ 177 #define F_GETLK64 33 /* Get file lock */ 178 #define F_SETLK64_NBMAND 44 /* private */ 179 #else 180 #define F_SETLK64 6 /* Set file lock */ 181 #define F_SETLKW64 7 /* Set file lock and wait */ 182 #define F_ALLOCSP64 10 /* Allocate file space */ 183 #define F_FREESP64 11 /* Free file space */ 184 #define F_GETLK64 14 /* Get file lock */ 185 #define F_SETLK64_NBMAND 42 /* private */ 186 #endif /* !_LP64 || _KERNEL */ 187 188 #endif /* _LARGEFILE64_SOURCE */ 189 190 #define F_SHARE 40 /* Set a file share reservation */ 191 #define F_UNSHARE 41 /* Remove a file share reservation */ 192 #define F_SHARE_NBMAND 43 /* private */ 193 194 #define F_BADFD 46 /* Create Poison FD */ 195 196 /* 197 * File segment locking set data type - information passed to system by user. 198 */ 199 200 /* regular version, for both small and large file compilation environment */ 201 typedef struct flock { 202 short l_type; 203 short l_whence; 204 off_t l_start; 205 off_t l_len; /* len == 0 means until end of file */ 206 int l_sysid; 207 pid_t l_pid; 208 long l_pad[4]; /* reserve area */ 209 } flock_t; 210 211 #if defined(_SYSCALL32) 212 213 /* Kernel's view of ILP32 flock structure */ 214 215 typedef struct flock32 { 216 int16_t l_type; 217 int16_t l_whence; 218 off32_t l_start; 219 off32_t l_len; /* len == 0 means until end of file */ 220 int32_t l_sysid; 221 pid32_t l_pid; 222 int32_t l_pad[4]; /* reserve area */ 223 } flock32_t; 224 225 #endif /* _SYSCALL32 */ 226 227 /* transitional large file interface version */ 228 229 #if defined(_LARGEFILE64_SOURCE) 230 231 typedef struct flock64 { 232 short l_type; 233 short l_whence; 234 off64_t l_start; 235 off64_t l_len; /* len == 0 means until end of file */ 236 int l_sysid; 237 pid_t l_pid; 238 long l_pad[4]; /* reserve area */ 239 } flock64_t; 240 241 #if defined(_SYSCALL32) 242 243 /* Kernel's view of ILP32 flock64 */ 244 245 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4 246 #pragma pack(4) 247 #endif 248 249 typedef struct flock64_32 { 250 int16_t l_type; 251 int16_t l_whence; 252 off64_t l_start; 253 off64_t l_len; /* len == 0 means until end of file */ 254 int32_t l_sysid; 255 pid32_t l_pid; 256 int32_t l_pad[4]; /* reserve area */ 257 } flock64_32_t; 258 259 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4 260 #pragma pack() 261 #endif 262 263 /* Kernel's view of LP64 flock64 */ 264 265 typedef struct flock64_64 { 266 int16_t l_type; 267 int16_t l_whence; 268 off64_t l_start; 269 off64_t l_len; /* len == 0 means until end of file */ 270 int32_t l_sysid; 271 pid32_t l_pid; 272 int64_t l_pad[4]; /* reserve area */ 273 } flock64_64_t; 274 275 #endif /* _SYSCALL32 */ 276 277 #endif /* _LARGEFILE64_SOURCE */ 278 279 #if defined(_KERNEL) || defined(_KMEMUSER) 280 /* SVr3 flock type; needed for rfs across the wire compatibility */ 281 typedef struct o_flock { 282 int16_t l_type; 283 int16_t l_whence; 284 int32_t l_start; 285 int32_t l_len; /* len == 0 means until end of file */ 286 int16_t l_sysid; 287 int16_t l_pid; 288 } o_flock_t; 289 #endif /* defined(_KERNEL) */ 290 291 /* 292 * File segment locking types. 293 */ 294 #define F_RDLCK 01 /* Read lock */ 295 #define F_WRLCK 02 /* Write lock */ 296 #define F_UNLCK 03 /* Remove lock(s) */ 297 #define F_UNLKSYS 04 /* remove remote locks for a given system */ 298 299 /* 300 * POSIX constants 301 */ 302 303 #define O_ACCMODE 3 /* Mask for file access modes */ 304 #define FD_CLOEXEC 1 /* close on exec flag */ 305 306 /* 307 * DIRECTIO 308 */ 309 #if defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX) 310 #define DIRECTIO_OFF (0) 311 #define DIRECTIO_ON (1) 312 313 /* 314 * File share reservation type 315 */ 316 typedef struct fshare { 317 short f_access; 318 short f_deny; 319 int f_id; 320 } fshare_t; 321 322 /* 323 * f_access values 324 */ 325 #define F_RDACC 0x1 /* Read-only share access */ 326 #define F_WRACC 0x2 /* Write-only share access */ 327 #define F_RWACC 0x3 /* Read-Write share access */ 328 #define F_RMACC 0x4 /* private flag: Delete share access */ 329 #define F_MDACC 0x20 /* private flag: Metadata share access */ 330 331 /* 332 * f_deny values 333 */ 334 #define F_NODNY 0x0 /* Don't deny others access */ 335 #define F_RDDNY 0x1 /* Deny others read share access */ 336 #define F_WRDNY 0x2 /* Deny others write share access */ 337 #define F_RWDNY 0x3 /* Deny others read or write share access */ 338 #define F_RMDNY 0x4 /* private flag: Deny delete share access */ 339 #define F_COMPAT 0x8 /* Set share to old DOS compatibility mode */ 340 #define F_MANDDNY 0x10 /* private flag: mandatory enforcement */ 341 #endif /* defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX) */ 342 343 /* 344 * Special flags for functions such as openat(), fstatat().... 345 */ 346 #if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \ 347 defined(__EXTENSIONS__) 348 #define AT_FDCWD 0xffd19553 349 #define AT_SYMLINK_NOFOLLOW 0x1000 350 #define AT_REMOVEDIR 0x1 351 #define _AT_TRIGGER 0x2 352 #define AT_EACCESS 0x4 /* use EUID/EGID for access */ 353 #endif 354 355 #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) 356 /* advice for posix_fadvise */ 357 #define POSIX_FADV_NORMAL 0 358 #define POSIX_FADV_RANDOM 1 359 #define POSIX_FADV_SEQUENTIAL 2 360 #define POSIX_FADV_WILLNEED 3 361 #define POSIX_FADV_DONTNEED 4 362 #define POSIX_FADV_NOREUSE 5 363 #endif 364 365 #ifdef __cplusplus 366 } 367 #endif 368 369 #endif /* _SYS_FCNTL_H */ 370