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#ifndef _FCNTL_H
# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
#endif
#include <sys/types.h>
/*
* 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
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