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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 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 #pragma ident "%Z%%M% %I% %E% SMI" 44 45 #include <sys/feature_tests.h> 46 47 #include <sys/types.h> 48 49 #ifdef __cplusplus 50 extern "C" { 51 #endif 52 53 /* 54 * Flag values accessible to open(2) and fcntl(2) 55 * (the first three can only be set by open(2)). 56 */ 57 #define O_RDONLY 0 58 #define O_WRONLY 1 59 #define O_RDWR 2 60 #if defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) 61 #define O_NDELAY 0x04 /* non-blocking I/O */ 62 #endif /* defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) */ 63 #define O_APPEND 0x08 /* append (writes guaranteed at the end) */ 64 #if defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) || \ 65 (_POSIX_C_SOURCE > 2) || defined(_XOPEN_SOURCE) 66 #define O_SYNC 0x10 /* synchronized file update option */ 67 #define O_DSYNC 0x40 /* synchronized data update option */ 68 #define O_RSYNC 0x8000 /* synchronized file update option */ 69 /* defines read/write file integrity */ 70 #endif /* defined(__EXTENSIONS__) || !defined(_POSIX_C_SOURCE) ... */ 71 #define O_NONBLOCK 0x80 /* non-blocking I/O (POSIX) */ 72 #ifdef SUN_SRC_COMPAT 73 #define O_PRIV 0x1000 /* Private access to file */ 74 #endif /* SUN_SRC_COMPAT */ 75 #ifdef _LARGEFILE_SOURCE 76 #define O_LARGEFILE 0x2000 77 #endif 78 79 /* 80 * Flag values accessible only to open(2). 81 */ 82 #define O_CREAT 0x100 /* open with file create (uses third arg) */ 83 #define O_TRUNC 0x200 /* open with truncation */ 84 #define O_EXCL 0x400 /* exclusive open */ 85 #define O_NOCTTY 0x800 /* don't allocate controlling tty (POSIX) */ 86 #define O_XATTR 0x4000 /* extended attribute */ 87 #define O_NOFOLLOW 0x20000 /* don't follow symlinks */ 88 #define O_NOLINKS 0x40000 /* don't allow multiple hard links */ 89 90 /* 91 * fcntl(2) requests 92 * 93 * N.B.: values are not necessarily assigned sequentially below. 94 */ 95 #define F_DUPFD 0 /* Duplicate fildes */ 96 #define F_GETFD 1 /* Get fildes flags */ 97 #define F_SETFD 2 /* Set fildes flags */ 98 #define F_GETFL 3 /* Get file flags */ 99 #define F_GETXFL 45 /* Get file flags including open-only flags */ 100 #define F_SETFL 4 /* Set file flags */ 101 102 /* 103 * Applications that read /dev/mem must be built like the kernel. A 104 * new symbol "_KMEMUSER" is defined for this purpose. 105 */ 106 #if defined(_KERNEL) || defined(_KMEMUSER) 107 #define F_O_GETLK 5 /* SVR3 Get file lock (need for rfs, across */ 108 /* the wire compatibility */ 109 /* clustering: lock id contains both per-node sysid and node id */ 110 #define SYSIDMASK 0x0000ffff 111 #define GETSYSID(id) (id & SYSIDMASK) 112 #define NODEIDMASK 0xffff0000 113 #define BITS_IN_SYSID 16 114 #define GETNLMID(sysid) ((int)(((uint_t)(sysid) & NODEIDMASK) >> \ 115 BITS_IN_SYSID)) 116 117 /* Clustering: Macro used for PXFS locks */ 118 #define GETPXFSID(sysid) ((int)(((uint_t)(sysid) & NODEIDMASK) >> \ 119 BITS_IN_SYSID)) 120 #endif /* defined(_KERNEL) */ 121 122 #define F_CHKFL 8 /* Unused */ 123 #define F_DUP2FD 9 /* Duplicate fildes at third arg */ 124 125 #define F_ALLOCSP 10 /* Reserved */ 126 #define F_ISSTREAM 13 /* Is the file desc. a stream ? */ 127 #define F_PRIV 15 /* Turn on private access to file */ 128 #define F_NPRIV 16 /* Turn off private access to file */ 129 #define F_QUOTACTL 17 /* UFS quota call */ 130 #define F_BLOCKS 18 /* Get number of BLKSIZE blocks allocated */ 131 #define F_BLKSIZE 19 /* Get optimal I/O block size */ 132 /* 133 * Numbers 20-22 have been removed and should not be reused. 134 */ 135 #define F_GETOWN 23 /* Get owner (socket emulation) */ 136 #define F_SETOWN 24 /* Set owner (socket emulation) */ 137 138 #ifdef C2_AUDIT 139 #define F_REVOKE 25 /* C2 Security. Revoke access to file desc. */ 140 #endif 141 142 #define F_HASREMOTELOCKS 26 /* Does vp have NFS locks; private to lock */ 143 /* manager */ 144 145 /* 146 * Commands that refer to flock structures. The argument types differ between 147 * the large and small file environments; therefore, the #defined values must 148 * as well. 149 * The NBMAND forms are private and should not be used. 150 */ 151 152 #if defined(_LP64) || _FILE_OFFSET_BITS == 32 153 /* "Native" application compilation environment */ 154 #define F_SETLK 6 /* Set file lock */ 155 #define F_SETLKW 7 /* Set file lock and wait */ 156 #define F_FREESP 11 /* Free file space */ 157 #define F_GETLK 14 /* Get file lock */ 158 #define F_SETLK_NBMAND 42 /* private */ 159 #else 160 /* ILP32 large file application compilation environment version */ 161 #define F_SETLK 34 /* Set file lock */ 162 #define F_SETLKW 35 /* Set file lock and wait */ 163 #define F_FREESP 27 /* Free file space */ 164 #define F_GETLK 33 /* Get file lock */ 165 #define F_SETLK_NBMAND 44 /* private */ 166 #endif /* _LP64 || _FILE_OFFSET_BITS == 32 */ 167 168 #if defined(_LARGEFILE64_SOURCE) 169 170 #if !defined(_LP64) || defined(_KERNEL) 171 /* 172 * transitional large file interface version 173 * These are only valid in a 32 bit application compiled with large files 174 * option, for source compatibility, the 64-bit versions are mapped back 175 * to the native versions. 176 */ 177 #define F_SETLK64 34 /* Set file lock */ 178 #define F_SETLKW64 35 /* Set file lock and wait */ 179 #define F_FREESP64 27 /* Free file space */ 180 #define F_GETLK64 33 /* Get file lock */ 181 #define F_SETLK64_NBMAND 44 /* private */ 182 #else 183 #define F_SETLK64 6 /* Set file lock */ 184 #define F_SETLKW64 7 /* Set file lock and wait */ 185 #define F_FREESP64 11 /* Free file space */ 186 #define F_GETLK64 14 /* Get file lock */ 187 #define F_SETLK64_NBMAND 42 /* private */ 188 #endif /* !_LP64 || _KERNEL */ 189 190 #endif /* _LARGEFILE64_SOURCE */ 191 192 #define F_SHARE 40 /* Set a file share reservation */ 193 #define F_UNSHARE 41 /* Remove a file share reservation */ 194 #define F_SHARE_NBMAND 43 /* private */ 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 */ 328 329 /* 330 * f_deny values 331 */ 332 #define F_NODNY 0x0 /* Don't deny others access */ 333 #define F_RDDNY 0x1 /* Deny others read share access */ 334 #define F_WRDNY 0x2 /* Deny others write share access */ 335 #define F_RWDNY 0x3 /* Deny others read or write share access */ 336 #define F_COMPAT 0x8 /* Set share to old DOS compatibility mode */ 337 #define F_MANDDNY 0x10 /* private flag: mandatory enforcement */ 338 #endif /* defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX) */ 339 340 /* 341 * Special flags for functions such as openat(), fstatat().... 342 */ 343 #if !defined(__XOPEN_OR_POSIX) || defined(_ATFILE_SOURCE) || \ 344 defined(__EXTENSIONS__) 345 #define AT_FDCWD 0xffd19553 346 #define AT_SYMLINK_NOFOLLOW 0x1000 347 #define AT_REMOVEDIR 0x1 348 #endif 349 350 #ifdef __cplusplus 351 } 352 #endif 353 354 #endif /* _SYS_FCNTL_H */ 355