1 /* 2 * Copyright (C) 2017 Hangzhou C-SKY Microsystems co.,ltd. 3 * 4 * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB 5 * in this tarball. 6 */ 7 8 #ifndef _FCNTL_H 9 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead." 10 #endif 11 12 #include <sys/types.h> 13 #ifdef __USE_GNU 14 # include <bits/uio.h> 15 #endif 16 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 00200000 /* must be a directory */ 37 # define O_NOFOLLOW 00400000 /* don't follow links */ 38 # define O_CLOEXEC 02000000 /* Set close_on_exec. */ 39 #endif 40 41 #ifdef __USE_GNU 42 # define O_DIRECT 00040000 /* direct disk access hint */ 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 /* For now Linux has synchronisity options for data and read operations. 49 We define the symbols here but let them do the same as O_SYNC since 50 this is a superset. */ 51 #if defined __USE_POSIX199309 || defined __USE_UNIX98 52 # define O_DSYNC O_SYNC /* Synchronize data. */ 53 # define O_RSYNC O_SYNC /* Synchronize read operations. */ 54 #endif 55 56 #ifdef __USE_LARGEFILE64 57 # define O_LARGEFILE 0400000 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 #ifndef __USE_FILE_OFFSET64 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 #else 71 # define F_GETLK F_GETLK64 /* Get record locking info. */ 72 # define F_SETLK F_SETLK64 /* Set record locking info (non-blocking).*/ 73 # define F_SETLKW F_SETLKW64 /* Set record locking info (blocking). */ 74 #endif 75 #define F_GETLK64 12 /* Get record locking info. */ 76 #define F_SETLK64 13 /* Set record locking info (non-blocking). */ 77 #define F_SETLKW64 14 /* Set record locking info (blocking). */ 78 79 #if defined __USE_BSD || defined __USE_UNIX98 80 # define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */ 81 # define F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */ 82 #endif 83 84 #ifdef __USE_GNU 85 # define F_SETSIG 10 /* Set number of signal to be sent. */ 86 # define F_GETSIG 11 /* Get number of signal to be sent. */ 87 #endif 88 89 #ifdef __USE_GNU 90 # define F_SETLEASE 1024 /* Set a lease. */ 91 # define F_GETLEASE 1025 /* Enquire what lease is active. */ 92 # define F_NOTIFY 1026 /* Request notfications on a directory. */ 93 # define F_SETPIPE_SZ 1031 /* Set pipe page size array. */ 94 # define F_GETPIPE_SZ 1032 /* Get pipe page size array. */ 95 #endif 96 #if defined __USE_XOPEN2K8 || defined __USE_GNU 97 # define F_DUPFD_CLOEXEC 1030 /* Duplicate file descriptor with 98 close-on-exit set on new fd. */ 99 #endif 100 101 /* For F_[GET|SET]FD. */ 102 #define FD_CLOEXEC 1 /* actually anything with low bit set goes */ 103 104 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */ 105 #define F_RDLCK 0 /* Read lock. */ 106 #define F_WRLCK 1 /* Write lock. */ 107 #define F_UNLCK 2 /* Remove lock. */ 108 109 /* For old implementation of bsd flock(). */ 110 #define F_EXLCK 4 /* or 3 */ 111 #define F_SHLCK 8 /* or 4 */ 112 113 #ifdef __USE_BSD 114 /* Operations for bsd flock(), also used by the kernel implementation. */ 115 # define LOCK_SH 1 /* shared lock */ 116 # define LOCK_EX 2 /* exclusive lock */ 117 # define LOCK_NB 4 /* or'd with one of the above to prevent 118 blocking */ 119 # define LOCK_UN 8 /* remove lock */ 120 #endif 121 122 #ifdef __USE_GNU 123 # define LOCK_MAND 32 /* This is a mandatory flock: */ 124 # define LOCK_READ 64 /* ... which allows concurrent read operations. */ 125 # define LOCK_WRITE 128 /* ... which allows concurrent write operations. */ 126 # define LOCK_RW 192 /* ... Which allows concurrent read & write operations. */ 127 #endif 128 129 #ifdef __USE_GNU 130 /* Types of directory notifications that may be requested with F_NOTIFY. */ 131 # define DN_ACCESS 0x00000001 /* File accessed. */ 132 # define DN_MODIFY 0x00000002 /* File modified. */ 133 # define DN_CREATE 0x00000004 /* File created. */ 134 # define DN_DELETE 0x00000008 /* File removed. */ 135 # define DN_RENAME 0x00000010 /* File renamed. */ 136 # define DN_ATTRIB 0x00000020 /* File changed attibutes. */ 137 # define DN_MULTISHOT 0x80000000 /* Don't remove notifier. */ 138 #endif 139 140 struct flock 141 { 142 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 143 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 144 #ifndef __USE_FILE_OFFSET64 145 __off_t l_start; /* Offset where the lock begins. */ 146 __off_t l_len; /* Size of the locked area; zero means until EOF. */ 147 #else 148 __off64_t l_start; /* Offset where the lock begins. */ 149 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 150 #endif 151 __pid_t l_pid; /* Process holding the lock. */ 152 }; 153 154 #ifdef __USE_LARGEFILE64 155 struct flock64 156 { 157 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 158 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 159 __off64_t l_start; /* Offset where the lock begins. */ 160 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 161 __pid_t l_pid; /* Process holding the lock. */ 162 }; 163 #endif 164 165 /* Define some more compatibility macros to be backward compatible with 166 BSD systems which did not managed to hide these kernel macros. */ 167 #ifdef __USE_BSD 168 # define FAPPEND O_APPEND 169 # define FFSYNC O_FSYNC 170 # define FASYNC O_ASYNC 171 # define FNONBLOCK O_NONBLOCK 172 # define FNDELAY O_NDELAY 173 #endif /* Use BSD. */ 174 175 /* Advise to `posix_fadvise'. */ 176 #ifdef __USE_XOPEN2K 177 # define POSIX_FADV_NORMAL 0 /* No further special treatment. */ 178 # define POSIX_FADV_RANDOM 1 /* Expect random page references. */ 179 # define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */ 180 # define POSIX_FADV_WILLNEED 3 /* Will need these pages. */ 181 # define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */ 182 # define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */ 183 #endif 184 185 186 #if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__ 187 /* Flags for SYNC_FILE_RANGE. */ 188 # define SYNC_FILE_RANGE_WAIT_BEFORE 1 /* Wait upon writeout of all pages 189 in the range before performing the 190 write. */ 191 # define SYNC_FILE_RANGE_WRITE 2 /* Initiate writeout of all those 192 dirty pages in the range which are 193 not presently under writeback. */ 194 # define SYNC_FILE_RANGE_WAIT_AFTER 4 /* Wait upon writeout of all pages in 195 the range after performing the 196 write. */ 197 198 /* Flags for SPLICE and VMSPLICE. */ 199 # define SPLICE_F_MOVE 1 /* Move pages instead of copying. */ 200 # define SPLICE_F_NONBLOCK 2 /* Don't block on the pipe splicing 201 (but we may still block on the fd 202 we splice from/to). */ 203 # define SPLICE_F_MORE 4 /* Expect more data. */ 204 # define SPLICE_F_GIFT 8 /* Pages passed in are a gift. */ 205 #endif 206 207 __BEGIN_DECLS 208 209 #if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__ 210 211 /* Provide kernel hint to read ahead. */ 212 extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count) 213 __THROW; 214 215 /* Selective file content synch'ing. */ 216 extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to, 217 unsigned int __flags); 218 219 /* Splice address range into a pipe. */ 220 extern ssize_t vmsplice (int __fdout, const struct iovec *__iov, 221 size_t __count, unsigned int __flags); 222 223 /* Splice two files together. */ 224 extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout, 225 __off64_t *__offout, size_t __len, 226 unsigned int __flags); 227 228 /* In-kernel implementation of tee for pipe buffers. */ 229 extern ssize_t tee (int __fdin, int __fdout, size_t __len, 230 unsigned int __flags); 231 232 #endif 233 __END_DECLS 234 235 /* Include generic Linux declarations. */ 236 #include <bits/fcntl-linux.h> 237