1 /* $Id: fcntl.h,v 1.16 2001/09/20 00:35:33 davem Exp $ */
5 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
6 located on an ext2 file system */
7 #define O_RDONLY 0x0000
8 #define O_WRONLY 0x0001
10 #define O_ACCMODE 0x0003
11 #define O_APPEND 0x0008
12 #define FASYNC 0x0040 /* fcntl, for BSD compatibility */
13 #define O_CREAT 0x0200 /* not fcntl */
14 #define O_TRUNC 0x0400 /* not fcntl */
15 #define O_EXCL 0x0800 /* not fcntl */
17 #define O_NONBLOCK 0x4000
18 #define O_NDELAY (0x0004 | O_NONBLOCK)
19 #define O_NOCTTY 0x8000 /* not fcntl */
20 #define O_DIRECTORY 0x10000 /* must be a directory */
21 #define O_NOFOLLOW 0x20000 /* don't follow links */
22 #define O_LARGEFILE 0x40000
23 #define O_DIRECT 0x100000 /* direct disk access hint */
25 #define F_DUPFD 0 /* dup */
26 #define F_GETFD 1 /* get close_on_exec */
27 #define F_SETFD 2 /* set/clear close_on_exec */
28 #define F_GETFL 3 /* get file->f_flags */
29 #define F_SETFL 4 /* set file->f_flags */
30 #define F_GETOWN 5 /* for sockets. */
31 #define F_SETOWN 6 /* for sockets. */
35 #define F_SETSIG 10 /* for sockets. */
36 #define F_GETSIG 11 /* for sockets. */
38 #define F_GETLK64 12 /* using 'struct flock64' */
42 /* for F_[GET|SET]FL */
43 #define FD_CLOEXEC 1 /* actually anything with low bit set goes */
45 /* for posix fcntl() and lockf() */
50 /* for old implementation of bsd flock () */
51 #define F_EXLCK 4 /* or 3 */
52 #define F_SHLCK 8 /* or 4 */
55 #define F_INPROGRESS 16
57 /* operations for bsd flock(), also used by the kernel implementation */
58 #define LOCK_SH 1 /* shared lock */
59 #define LOCK_EX 2 /* exclusive lock */
60 #define LOCK_NB 4 /* or'd with one of the above to prevent
62 #define LOCK_UN 8 /* remove lock */
64 #define LOCK_MAND 32 /* This is a mandatory flock */
65 #define LOCK_READ 64 /* ... Which allows concurrent read operations */
66 #define LOCK_WRITE 128 /* ... Which allows concurrent write operations */
67 #define LOCK_RW 192 /* ... Which allows concurrent read & write ops */
87 #define F_LINUX_SPECIFIC_BASE 1024