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- #ifndef _FCNTL_H
- # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
- #endif
- #include <sys/types.h>
- #ifdef __USE_GNU
- # include <bits/uio.h>
- #endif
- /*
- * open/fcntl - O_SYNC is only implemented on blocks devices and on files
- * located on an ext2 file system
- */
- #define O_ACCMODE 00000003
- #define O_RDONLY 00000000
- #define O_WRONLY 00000001
- #define O_RDWR 00000002
- #define O_CREAT 00000100 /* not fcntl */
- #define O_EXCL 00000200 /* not fcntl */
- #define O_NOCTTY 00000400 /* not fcntl */
- #define O_TRUNC 00001000 /* not fcntl */
- #define O_APPEND 00002000
- #define O_NONBLOCK 00004000
- #define O_NDELAY O_NONBLOCK
- #define O_SYNC 00010000
- #define O_ASYNC 00020000
- #ifdef __USE_GNU
- # define O_DIRECT 00040000 /* must be a directory */
- # define O_DIRECTORY 00200000 /* direct disk access */
- # define O_NOFOLLOW 00400000 /* don't follow links */
- # define O_NOATIME 01000000 /* don't set atime */
- #endif
- #ifdef __USE_LARGEFILE64
- # define O_LARGEFILE 00100000
- #endif
- /* For now Linux has synchronisity options for data and read operations.
- We define the symbols here but let them do the same as O_SYNC since
- this is a superset. */
- #if defined __USE_POSIX199309 || defined __USE_UNIX98
- # define O_DSYNC O_SYNC /* Synchronize data. */
- # define O_RSYNC O_SYNC /* Synchronize read operations. */
- #endif
- #define F_DUPFD 0 /* dup */
- #define F_GETFD 1 /* get close_on_exec */
- #define F_SETFD 2 /* set/clear close_on_exec */
- #define F_GETFL 3 /* get file->f_flags */
- #define F_SETFL 4 /* set file->f_flags */
- #ifndef __USE_FILE_OFFSET64
- # define F_GETLK 5
- # define F_SETLK 6
- # define F_SETLKW 7
- #else
- # define F_GETLK F_GETLK64
- # define F_SETLK F_SETLK64
- # define F_SETLKW F_SETLKW64
- #endif
- #define F_GETLK64 12 /* using 'struct flock64' */
- #define F_SETLK64 13
- #define F_SETLKW64 14
- #if defined __USE_BSD || defined __USE_XOPEN2K
- # define F_SETOWN 8 /* for sockets. */
- # define F_GETOWN 9 /* for sockets. */
- #endif
- #ifdef __USE_GNU
- # define F_SETSIG 10 /* for sockets. */
- # define F_GETSIG 11 /* for sockets. */
- #endif
- #ifdef __USE_GNU
- # define F_SETLEASE 1024 /* Set a lease. */
- # define F_GETLEASE 1025 /* Enquire what lease is active. */
- # define F_NOTIFY 1026 /* Request notfications on a directory. */
- #endif
- /* for F_[GET|SET]FL */
- #define FD_CLOEXEC 1 /* actually anything with low bit set goes */
- /* for posix fcntl() and lockf() */
- #define F_RDLCK 0
- #define F_WRLCK 1
- #define F_UNLCK 2
- /* for old implementation of bsd flock () */
- #define F_EXLCK 4 /* or 3 */
- #define F_SHLCK 8 /* or 4 */
- /* for leases */
- #define F_INPROGRESS 16
- #ifdef __USE_BSD
- /* operations for bsd flock(), also used by the kernel implementation */
- # define LOCK_SH 1 /* shared lock */
- # define LOCK_EX 2 /* exclusive lock */
- # define LOCK_NB 4 /* or'd with one of the above to prevent
- blocking */
- # define LOCK_UN 8 /* remove lock */
- #endif
- #ifdef __USE_GNU
- # define LOCK_MAND 32 /* This is a mandatory flock */
- # define LOCK_READ 64 /* ... Which allows concurrent
- read operations */
- # define LOCK_WRITE 128 /* ... Which allows concurrent
- write operations */
- # define LOCK_RW 192 /* ... Which allows concurrent
- read & write ops */
- #endif
- #ifdef __USE_GNU
- /* Types of directory notifications that may be requested with F_NOTIFY. */
- # define DN_ACCESS 0x00000001 /* File accessed. */
- # define DN_MODIFY 0x00000002 /* File modified. */
- # define DN_CREATE 0x00000004 /* File created. */
- # define DN_DELETE 0x00000008 /* File removed. */
- # define DN_RENAME 0x00000010 /* File renamed. */
- # define DN_ATTRIB 0x00000020 /* File changed attibutes. */
- # define DN_MULTISHOT 0x80000000 /* Don't remove notifier. */
- #endif
- struct flock {
- short l_type;
- short l_whence;
- #ifndef __USE_FILE_OFFSET64
- __off_t l_start;
- __off_t l_len;
- #else
- __off64_t l_start;
- __off64_t l_len;
- #endif
- __pid_t l_pid;
- };
- #ifdef __USE_LARGEFILE64
- struct flock64 {
- short l_type;
- short l_whence;
- __off64_t l_start;
- __off64_t l_len;
- __pid_t l_pid;
- };
- #endif
- /* Define some more compatibility macros to be backward compatible with
- * BSD systems which did not managed to hide these kernel macros. */
- #ifdef __USE_BSD
- # define FAPPEND O_APPEND
- # define FFSYNC O_FSYNC
- # define FASYNC O_ASYNC
- # define FNONBLOCK O_NONBLOCK
- # define FNDELAY O_NDELAY
- #endif /* Use BSD. */
- /* Advise to `posix_fadvise'. */
- #ifdef __USE_XOPEN2K
- # define POSIX_FADV_NORMAL 0 /* No further special treatment. */
- # define POSIX_FADV_RANDOM 1 /* Expect random page references. */
- # define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */
- # define POSIX_FADV_WILLNEED 3 /* Will need these pages. */
- # define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */
- # define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */
- #endif
- #ifdef __USE_GNU
- /* Flags for SYNC_FILE_RANGE. */
- # define SYNC_FILE_RANGE_WAIT_BEFORE 1 /* Wait upon writeout of all pages
- in the range before performing
- the write */
- # define SYNC_FILE_RANGE_WRITE 2 /* Initiate writeout of all those
- dirty pages in the range which are
- not presently under writeback */
- # define SYNC_FILE_RANGE_WAIT_AFTER 4 /* Wait upon writeout of all pages
- in the range after performing the
- write */
- /* Flags for splice() and vmsplice() */
- # define SPLICE_F_MOVE 1 /* Move pages instead of copying */
- # define SPLICE_F_NONBLOCK 2 /* Don't block on the pipe splicing
- (but we may still block on the fd
- we splice from/to) */
- # define SPLICE_F_MORE 4 /* Expect more data */
- # define SPLICE_F_GIFT 8 /* Pages passed in are a gift */
- __BEGIN_DECLS
- /* Selective file content synch'ing */
- extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to,
- unsigned int __flags);
- /* Splice address range into a pipe */
- extern ssize_t vmsplice (int __fdout, const struct iovec *__iov,
- size_t __count, unsigned int __flags);
- /* Splice two files together */
- extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout,
- __off64_t *__offout, size_t __len,
- unsigned int __flags);
- /* In-kernel implementation of tee for pipe buffers */
- extern ssize_t tee (int __fdin, int __fdout, size_t __len,
- unsigned int __flags);
- __END_DECLS
- #endif
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