1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2018 Kalray Inc. 7 */ 8 9 #ifndef _FCNTL_H 10 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead." 11 #endif 12 13 #include <sys/types.h> 14 #ifdef __USE_GNU 15 # include <bits/uio.h> 16 #endif 17 18 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files 19 located on an ext2 file system */ 20 #define O_ACCMODE 0003 21 #define O_RDONLY 00 22 #define O_WRONLY 01 23 #define O_RDWR 02 24 #define O_CREAT 0100 /* not fcntl */ 25 #define O_EXCL 0200 /* not fcntl */ 26 #define O_NOCTTY 0400 /* not fcntl */ 27 #define O_TRUNC 01000 /* not fcntl */ 28 #define O_APPEND 02000 29 #define O_NONBLOCK 04000 30 #define O_NDELAY O_NONBLOCK 31 #define O_SYNC 010000 32 #define O_FSYNC O_SYNC 33 #define O_ASYNC 020000 34 35 #ifdef __USE_XOPEN2K8 36 # define O_DIRECTORY 0200000 /* Must be a directory. */ 37 # define O_NOFOLLOW 0400000 /* Do not follow links. */ 38 # define O_CLOEXEC 02000000 /* Set close_on_exec. */ 39 #endif 40 41 #ifdef __USE_GNU 42 # define O_DIRECT 040000 /* Direct disk access. */ 43 # define O_NOATIME 01000000 /* Do not set atime. */ 44 # define O_PATH 010000000 /* Resolve pathname but do not open file. */ 45 # define O_TMPFILE 020200000 /* Atomically create nameless file. */ 46 #endif 47 48 #ifdef __USE_LARGEFILE64 49 # define O_LARGEFILE 0100000 50 #endif 51 52 /* For now Linux has synchronisity options for data and read operations. 53 We define the symbols here but let them do the same as O_SYNC since 54 this is a superset. */ 55 #if defined __USE_POSIX199309 || defined __USE_UNIX98 56 # define O_DSYNC O_SYNC /* Synchronize data. */ 57 # define O_RSYNC O_SYNC /* Synchronize read operations. */ 58 #endif 59 60 /* Values for the second argument to `fcntl'. */ 61 #define F_DUPFD 0 /* Duplicate file descriptor. */ 62 #define F_GETFD 1 /* Get file descriptor flags. */ 63 #define F_SETFD 2 /* Set file descriptor flags. */ 64 #define F_GETFL 3 /* Get file status flags. */ 65 #define F_SETFL 4 /* Set file status flags. */ 66 67 #define F_GETLK 5 /* Get record locking info. */ 68 #define F_SETLK 6 /* Set record locking info (non-blocking). */ 69 #define F_SETLKW 7 /* Set record locking info (blocking). */ 70 71 /* Same as standard, since we always have 64-bit offsets. */ 72 #define F_GETLK64 F_GETLK /* Get record locking info. */ 73 #define F_SETLK64 F_SETLK /* Set record locking info (non-blocking). */ 74 #define F_SETLKW64 F_SETLKW /* Set record locking info (blocking). */ 75 76 #if defined __USE_BSD || defined __USE_XOPEN2K 77 # define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */ 78 # define F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */ 79 #endif 80 81 #ifdef __USE_GNU 82 # define F_SETSIG 10 /* Set number of signal to be sent. */ 83 # define F_GETSIG 11 /* Get number of signal to be sent. */ 84 #endif 85 86 #ifdef __USE_GNU 87 # define F_SETLEASE 1024 /* Set a lease. */ 88 # define F_GETLEASE 1025 /* Enquire what lease is active. */ 89 # define F_NOTIFY 1026 /* Request notfications on a directory. */ 90 # define F_SETPIPE_SZ 1031 /* Set pipe page size array. */ 91 # define F_GETPIPE_SZ 1032 /* Get pipe page size array. */ 92 #endif 93 #if defined __USE_XOPEN2K8 || defined __USE_GNU 94 # define F_DUPFD_CLOEXEC 1030 /* Duplicate file descriptor with 95 close-on-exit set on new fd. */ 96 #endif 97 98 /* For F_[GET|SET]FL. */ 99 #define FD_CLOEXEC 1 /* actually anything with low bit set goes */ 100 101 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */ 102 #define F_RDLCK 0 /* Read lock. */ 103 #define F_WRLCK 1 /* Write lock. */ 104 #define F_UNLCK 2 /* Remove lock. */ 105 106 /* For old implementation of bsd flock(). */ 107 #define F_EXLCK 4 /* or 3 */ 108 #define F_SHLCK 8 /* or 4 */ 109 110 #ifdef __USE_BSD 111 /* Operations for bsd flock(), also used by the kernel implementation. */ 112 # define LOCK_SH 1 /* shared lock */ 113 # define LOCK_EX 2 /* exclusive lock */ 114 # define LOCK_NB 4 /* or'd with one of the above to prevent 115 blocking */ 116 # define LOCK_UN 8 /* remove lock */ 117 #endif 118 119 #ifdef __USE_GNU 120 # define LOCK_MAND 32 /* This is a mandatory flock: */ 121 # define LOCK_READ 64 /* ... which allows concurrent read operations. */ 122 # define LOCK_WRITE 128 /* ... which allows concurrent write operations. */ 123 # define LOCK_RW 192 /* ... Which allows concurrent read & write operations. */ 124 #endif 125 126 #ifdef __USE_GNU 127 /* Types of directory notifications that may be requested with F_NOTIFY. */ 128 # define DN_ACCESS 0x00000001 /* File accessed. */ 129 # define DN_MODIFY 0x00000002 /* File modified. */ 130 # define DN_CREATE 0x00000004 /* File created. */ 131 # define DN_DELETE 0x00000008 /* File removed. */ 132 # define DN_RENAME 0x00000010 /* File renamed. */ 133 # define DN_ATTRIB 0x00000020 /* File changed attibutes. */ 134 # define DN_MULTISHOT 0x80000000 /* Don't remove notifier. */ 135 #endif 136 137 struct flock 138 { 139 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 140 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 141 #ifndef __USE_FILE_OFFSET64 142 __off_t l_start; /* Offset where the lock begins. */ 143 __off_t l_len; /* Size of the locked area; zero means until EOF. */ 144 #else 145 __off64_t l_start; /* Offset where the lock begins. */ 146 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 147 #endif 148 __pid_t l_pid; /* Process holding the lock. */ 149 }; 150 151 #ifdef __USE_LARGEFILE64 152 struct flock64 153 { 154 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 155 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 156 __off64_t l_start; /* Offset where the lock begins. */ 157 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 158 __pid_t l_pid; /* Process holding the lock. */ 159 }; 160 #endif 161 162 /* Define some more compatibility macros to be backward compatible with 163 BSD systems which did not managed to hide these kernel macros. */ 164 #ifdef __USE_BSD 165 # define FAPPEND O_APPEND 166 # define FFSYNC O_FSYNC 167 # define FASYNC O_ASYNC 168 # define FNONBLOCK O_NONBLOCK 169 # define FNDELAY O_NDELAY 170 #endif /* Use BSD. */ 171 172 /* Advise to `posix_fadvise'. */ 173 #ifdef __USE_XOPEN2K 174 # define POSIX_FADV_NORMAL 0 /* No further special treatment. */ 175 # define POSIX_FADV_RANDOM 1 /* Expect random page references. */ 176 # define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */ 177 # define POSIX_FADV_WILLNEED 3 /* Will need these pages. */ 178 # define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */ 179 # define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */ 180 #endif 181 182 #if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__ 183 /* Flags for SYNC_FILE_RANGE. */ 184 # define SYNC_FILE_RANGE_WAIT_BEFORE 1 /* Wait upon writeout of all pages 185 in the range before performing the 186 write. */ 187 # define SYNC_FILE_RANGE_WRITE 2 /* Initiate writeout of all those 188 dirty pages in the range which are 189 not presently under writeback. */ 190 # define SYNC_FILE_RANGE_WAIT_AFTER 4 /* Wait upon writeout of all pages in 191 the range after performing the 192 write. */ 193 194 /* Flags for SPLICE and VMSPLICE. */ 195 # define SPLICE_F_MOVE 1 /* Move pages instead of copying. */ 196 # define SPLICE_F_NONBLOCK 2 /* Don't block on the pipe splicing 197 (but we may still block on the fd 198 we splice from/to). */ 199 # define SPLICE_F_MORE 4 /* Expect more data. */ 200 # define SPLICE_F_GIFT 8 /* Pages passed in are a gift. */ 201 #endif 202 203 __BEGIN_DECLS 204 205 #if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__ 206 207 /* Provide kernel hint to read ahead. */ 208 extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count) 209 __THROW; 210 211 /* Selective file content synch'ing. */ 212 extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to, 213 unsigned int __flags); 214 215 /* Splice address range into a pipe. */ 216 extern ssize_t vmsplice (int __fdout, const struct iovec *__iov, 217 size_t __count, unsigned int __flags); 218 219 /* Splice two files together. */ 220 extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout, 221 __off64_t *__offout, size_t __len, 222 unsigned int __flags); 223 224 /* In-kernel implementation of tee for pipe buffers. */ 225 extern ssize_t tee (int __fdin, int __fdout, size_t __len, 226 unsigned int __flags); 227 228 #endif 229 __END_DECLS 230 231 /* Include generic Linux declarations. */ 232 #include <bits/fcntl-linux.h> 233