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 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 29 /* 30 * University Copyright- Copyright (c) 1982, 1986, 1988 31 * The Regents of the University of California 32 * All Rights Reserved 33 * 34 * University Acknowledgment- Portions of this document are derived from 35 * software developed by the University of California, Berkeley, and its 36 * contributors. 37 */ 38 39 #ifndef _SYS_FCNTL_H 40 #define _SYS_FCNTL_H 41 42 #pragma ident "%Z%%M% %I% %E% SMI" 43 44 #include <sys/feature_tests.h> 45 46 #include <sys/types.h> 47 48 #ifdef __cplusplus 49 extern "C" { 50 #endif 51 52 /* 53 * Flag values accessible to open(2) and fcntl(2) 54 * (the first three can only be set by open(2)). 55 */ 56 #define O_RDONLY 0 57 #define O_WRONLY 1 58 #define O_RDWR 2 59 #if defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) 60 #define O_NDELAY 0x04 /* non-blocking I/O */ 61 #endif /* defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) */ 62 #define O_APPEND 0x08 /* append (writes guaranteed at the end) */ 63 #if defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) || \ 64 (_POSIX_C_SOURCE > 2) || defined(_XOPEN_SOURCE) 65 #define O_SYNC 0x10 /* synchronized file update option */ 66 #define O_DSYNC 0x40 /* synchronized data update option */ 67 #define O_RSYNC 0x8000 /* synchronized file update option */ 68 /* defines read/write file integrity */ 69 #endif /* defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) ... */ 70 #define O_NONBLOCK 0x80 /* non-blocking I/O (POSIX) */ 71 #ifdef SUN_SRC_COMPAT 72 #define O_PRIV 0x1000 /* Private access to file */ 73 #endif /* SUN_SRC_COMPAT */ 74 #ifdef _LARGEFILE_SOURCE 75 #define O_LARGEFILE 0x2000 76 #endif 77 78 /* 79 * Flag values accessible only to open(2). 80 */ 81 #define O_CREAT 0x100 /* open with file create (uses third arg) */ 82 #define O_TRUNC 0x200 /* open with truncation */ 83 #define O_EXCL 0x400 /* exclusive open */ 84 #define O_NOCTTY 0x800 /* don't allocate controlling tty (POSIX) */ 85 #define O_XATTR 0x4000 /* extended attribute */ 86 #define O_NOFOLLOW 0x20000 /* don't follow symlinks */ 87 #define O_NOLINKS 0x40000 /* don't allow multiple hard links */ 88 89 /* 90 * fcntl(2) requests 91 * 92 * N.B.: values are not necessarily assigned sequentially below. 93 */ 94 #define F_DUPFD 0 /* Duplicate fildes */ 95 #define F_GETFD 1 /* Get fildes flags */ 96 #define F_SETFD 2 /* Set fildes flags */ 97 #define F_GETFL 3 /* Get file flags */ 98 #define F_GETXFL 45 /* Get file flags including open-only flags */ 99 #define F_SETFL 4 /* Set file flags */ 100 101 /* 102 * Applications that read /dev/mem must be built like the kernel. A 103 * new symbol "_KMEMUSER" is defined for this purpose. 104 */ 105 #if defined(_KERNEL) || defined(_KMEMUSER) 106 #define F_O_GETLK 5 /* SVR3 Get file lock (need for rfs, across */ 107 /* the wire compatibility */ 108 /* clustering: lock id contains both per-node sysid and node id */ 109 #define SYSIDMASK 0x0000ffff 110 #define GETSYSID(id) (id & SYSIDMASK) 111 #define NODEIDMASK 0xffff0000 112 #define BITS_IN_SYSID 16 113 #define GETNLMID(sysid) ((int)(((uint_t)(sysid) & NODEIDMASK) >> \ 114 BITS_IN_SYSID)) 115 116 /* Clustering: Macro used for PXFS locks */ 117 #define GETPXFSID(sysid) ((int)(((uint_t)(sysid) & NODEIDMASK) >> \ 118 BITS_IN_SYSID)) 119 #endif /* defined(_KERNEL) */ 120 121 #define F_CHKFL 8 /* Unused */ 122 #define F_DUP2FD 9 /* Duplicate fildes at third arg */ 123 124 #define F_ISSTREAM 13 /* Is the file desc. a stream ? */ 125 #define F_PRIV 15 /* Turn on private access to file */ 126 #define F_NPRIV 16 /* Turn off private access to file */ 127 #define F_QUOTACTL 17 /* UFS quota call */ 128 #define F_BLOCKS 18 /* Get number of BLKSIZE blocks allocated */ 129 #define F_BLKSIZE 19 /* Get optimal I/O block size */ 130 /* 131 * Numbers 20-22 have been removed and should not be reused. 132 */ 133 #define F_GETOWN 23 /* Get owner (socket emulation) */ 134 #define F_SETOWN 24 /* Set owner (socket emulation) */ 135 #define F_REVOKE 25 /* Object reuse revoke access to file desc. */ 136 137 #define F_HASREMOTELOCKS 26 /* Does vp have NFS locks; private to lock */ 138 /* manager */ 139 140 /* 141 * Commands that refer to flock structures. The argument types differ between 142 * the large and small file environments; therefore, the #defined values must 143 * as well. 144 * The NBMAND forms are private and should not be used. 145 */ 146 147 #if defined(_LP64) || _FILE_OFFSET_BITS == 32 148 /* "Native" application compilation environment */ 149 #define F_SETLK 6 /* Set file lock */ 150 #define F_SETLKW 7 /* Set file lock and wait */ 151 #define F_ALLOCSP 10 /* Allocate file space */ 152 #define F_FREESP 11 /* Free file space */ 153 #define F_GETLK 14 /* Get file lock */ 154 #define F_SETLK_NBMAND 42 /* private */ 155 #else 156 /* ILP32 large file application compilation environment version */ 157 #define F_SETLK 34 /* Set file lock */ 158 #define F_SETLKW 35 /* Set file lock and wait */ 159 #define F_ALLOCSP 28 /* Alllocate file space */ 160 #define F_FREESP 27 /* Free file space */ 161 #define F_GETLK 33 /* Get file lock */ 162 #define F_SETLK_NBMAND 44 /* private */ 163 #endif /* _LP64 || _FILE_OFFSET_BITS == 32 */ 164 165 #if defined(_LARGEFILE64_SOURCE) 166 167 #if !defined(_LP64) || defined(_KERNEL) 168 /* 169 * transitional large file interface version 170 * These are only valid in a 32 bit application compiled with large files 171 * option, for source compatibility, the 64-bit versions are mapped back 172 * to the native versions. 173 */ 174 #define F_SETLK64 34 /* Set file lock */ 175 #define F_SETLKW64 35 /* Set file lock and wait */ 176 #define F_ALLOCSP64 28 /* Allocate file space */ 177 #define F_FREESP64 27 /* Free file space */ 178 #define F_GETLK64 33 /* Get file lock */ 179 #define F_SETLK64_NBMAND 44 /* private */ 180 #else 181 #define F_SETLK64 6 /* Set file lock */ 182 #define F_SETLKW64 7 /* Set file lock and wait */ 183 #define F_ALLOCSP64 10 /* Allocate file space */ 184 #define F_FREESP64 11 /* Free file space */ 185 #define F_GETLK64 14 /* Get file lock */ 186 #define F_SETLK64_NBMAND 42 /* private */ 187 #endif /* !_LP64 || _KERNEL */ 188 189 #endif /* _LARGEFILE64_SOURCE */ 190 191 #define F_SHARE 40 /* Set a file share reservation */ 192 #define F_UNSHARE 41 /* Remove a file share reservation */ 193 #define F_SHARE_NBMAND 43 /* private */ 194 195 #define F_BADFD 46 /* Create Poison FD */ 196 197 /* 198 * File segment locking set data type - information passed to system by user. 199 */ 200 201 /* regular version, for both small and large file compilation environment */ 202 typedef struct flock { 203 short l_type; 204 short l_whence; 205 off_t l_start; 206 off_t l_len; /* len == 0 means until end of file */ 207 int l_sysid; 208 pid_t l_pid; 209 long l_pad[4]; /* reserve area */ 210 } flock_t; 211 212 #if defined(_SYSCALL32) 213 214 /* Kernel's view of ILP32 flock structure */ 215 216 typedef struct flock32 { 217 int16_t l_type; 218 int16_t l_whence; 219 off32_t l_start; 220 off32_t l_len; /* len == 0 means until end of file */ 221 int32_t l_sysid; 222 pid32_t l_pid; 223 int32_t l_pad[4]; /* reserve area */ 224 } flock32_t; 225 226 #endif /* _SYSCALL32 */ 227 228 /* transitional large file interface version */ 229 230 #if defined(_LARGEFILE64_SOURCE) 231 232 typedef struct flock64 { 233 short l_type; 234 short l_whence; 235 off64_t l_start; 236 off64_t l_len; /* len == 0 means until end of file */ 237 int l_sysid; 238 pid_t l_pid; 239 long l_pad[4]; /* reserve area */ 240 } flock64_t; 241 242 #if defined(_SYSCALL32) 243 244 /* Kernel's view of ILP32 flock64 */ 245 246 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4 247 #pragma pack(4) 248 #endif 249 250 typedef struct flock64_32 { 251 int16_t l_type; 252 int16_t l_whence; 253 off64_t l_start; 254 off64_t l_len; /* len == 0 means until end of file */ 255 int32_t l_sysid; 256 pid32_t l_pid; 257 int32_t l_pad[4]; /* reserve area */ 258 } flock64_32_t; 259 260 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4 261 #pragma pack() 262 #endif 263 264 /* Kernel's view of LP64 flock64 */ 265 266 typedef struct flock64_64 { 267 int16_t l_type; 268 int16_t l_whence; 269 off64_t l_start; 270 off64_t l_len; /* len == 0 means until end of file */ 271 int32_t l_sysid; 272 pid32_t l_pid; 273 int64_t l_pad[4]; /* reserve area */ 274 } flock64_64_t; 275 276 #endif /* _SYSCALL32 */ 277 278 #endif /* _LARGEFILE64_SOURCE */ 279 280 #if defined(_KERNEL) || defined(_KMEMUSER) 281 /* SVr3 flock type; needed for rfs across the wire compatibility */ 282 typedef struct o_flock { 283 int16_t l_type; 284 int16_t l_whence; 285 int32_t l_start; 286 int32_t l_len; /* len == 0 means until end of file */ 287 int16_t l_sysid; 288 int16_t l_pid; 289 } o_flock_t; 290 #endif /* defined(_KERNEL) */ 291 292 /* 293 * File segment locking types. 294 */ 295 #define F_RDLCK 01 /* Read lock */ 296 #define F_WRLCK 02 /* Write lock */ 297 #define F_UNLCK 03 /* Remove lock(s) */ 298 #define F_UNLKSYS 04 /* remove remote locks for a given system */ 299 300 /* 301 * POSIX constants 302 */ 303 304 #define O_ACCMODE 3 /* Mask for file access modes */ 305 #define FD_CLOEXEC 1 /* close on exec flag */ 306 307 /* 308 * DIRECTIO 309 */ 310 #if defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX) 311 #define DIRECTIO_OFF (0) 312 #define DIRECTIO_ON (1) 313 314 /* 315 * File share reservation type 316 */ 317 typedef struct fshare { 318 short f_access; 319 short f_deny; 320 int f_id; 321 } fshare_t; 322 323 /* 324 * f_access values 325 */ 326 #define F_RDACC 0x1 /* Read-only share access */ 327 #define F_WRACC 0x2 /* Write-only share access */ 328 #define F_RWACC 0x3 /* Read-Write share access */ 329 #define F_RMACC 0x4 /* private flag: Delete share access */ 330 #define F_MDACC 0x20 /* private flag: Metadata share access */ 331 332 /* 333 * f_deny values 334 */ 335 #define F_NODNY 0x0 /* Don't deny others access */ 336 #define F_RDDNY 0x1 /* Deny others read share access */ 337 #define F_WRDNY 0x2 /* Deny others write share access */ 338 #define F_RWDNY 0x3 /* Deny others read or write share access */ 339 #define F_RMDNY 0x4 /* private flag: Deny delete share access */ 340 #define F_COMPAT 0x8 /* Set share to old DOS compatibility mode */ 341 #define F_MANDDNY 0x10 /* private flag: mandatory enforcement */ 342 #endif /* defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX) */ 343 344 /* 345 * Special flags for functions such as openat(), fstatat().... 346 */ 347 #if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \ 348 defined(__EXTENSIONS__) 349 #define AT_FDCWD 0xffd19553 350 #define AT_SYMLINK_NOFOLLOW 0x1000 351 #define AT_REMOVEDIR 0x1 352 #define _AT_TRIGGER 0x2 353 #endif 354 355 #ifdef __cplusplus 356 } 357 #endif 358 359 #endif /* _SYS_FCNTL_H */ 360