#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