1 #ifndef _ASM_GENERIC_FCNTL_H
2 #define _ASM_GENERIC_FCNTL_H
4 #include <linux/types.h>
8 * FMODE_NONOTIFY is 0x1000000
9 * These cannot be used by userspace O_* until internal and external open
15 * When introducing new O_* bits, please check its uniqueness in fcntl_init().
18 #define O_ACCMODE 00000003
19 #define O_RDONLY 00000000
20 #define O_WRONLY 00000001
21 #define O_RDWR 00000002
23 #define O_CREAT 00000100 /* not fcntl */
26 #define O_EXCL 00000200 /* not fcntl */
29 #define O_NOCTTY 00000400 /* not fcntl */
32 #define O_TRUNC 00001000 /* not fcntl */
35 #define O_APPEND 00002000
38 #define O_NONBLOCK 00004000
41 #define O_DSYNC 00010000 /* used to be O_SYNC, see below */
44 #define FASYNC 00020000 /* fcntl, for BSD compatibility */
47 #define O_DIRECT 00040000 /* direct disk access hint */
50 #define O_LARGEFILE 00100000
53 #define O_DIRECTORY 00200000 /* must be a directory */
56 #define O_NOFOLLOW 00400000 /* don't follow links */
59 #define O_NOATIME 01000000
62 #define O_CLOEXEC 02000000 /* set close_on_exec */
66 * Before Linux 2.6.33 only O_DSYNC semantics were implemented, but using
67 * the O_SYNC flag. We continue to use the existing numerical value
68 * for O_DSYNC semantics now, but using the correct symbolic name for it.
69 * This new value is used to request true Posix O_SYNC semantics. It is
70 * defined in this strange way to make sure applications compiled against
71 * new headers get at least O_DSYNC semantics on older kernels.
73 * This has the nice side-effect that we can simply test for O_DSYNC
74 * wherever we do not care if O_DSYNC or O_SYNC is used.
76 * Note: __O_SYNC must never be used directly.
79 #define __O_SYNC 04000000
80 #define O_SYNC (__O_SYNC|O_DSYNC)
84 #define O_PATH 010000000
88 #define O_TMPFILE 020000000
92 #define O_NDELAY O_NONBLOCK
95 #define F_DUPFD 0 /* dup */
96 #define F_GETFD 1 /* get close_on_exec */
97 #define F_SETFD 2 /* set/clear close_on_exec */
98 #define F_GETFL 3 /* get file->f_flags */
99 #define F_SETFL 4 /* set file->f_flags */
106 #define F_SETOWN 8 /* for sockets. */
107 #define F_GETOWN 9 /* for sockets. */
110 #define F_SETSIG 10 /* for sockets. */
111 #define F_GETSIG 11 /* for sockets. */
116 #define F_GETLK64 12 /* using 'struct flock64' */
118 #define F_SETLKW64 14
123 #define F_SETOWN_EX 15
124 #define F_GETOWN_EX 16
127 #ifndef F_GETOWNER_UIDS
128 #define F_GETOWNER_UIDS 17
131 #define F_OWNER_TID 0
132 #define F_OWNER_PID 1
133 #define F_OWNER_PGRP 2
140 /* for F_[GET|SET]FL */
141 #define FD_CLOEXEC 1 /* actually anything with low bit set goes */
143 /* for posix fcntl() and lockf() */
150 /* for old implementation of bsd flock () */
152 #define F_EXLCK 4 /* or 3 */
153 #define F_SHLCK 8 /* or 4 */
156 /* operations for bsd flock(), also used by the kernel implementation */
157 #define LOCK_SH 1 /* shared lock */
158 #define LOCK_EX 2 /* exclusive lock */
159 #define LOCK_NB 4 /* or'd with one of the above to prevent
161 #define LOCK_UN 8 /* remove lock */
163 #define LOCK_MAND 32 /* This is a mandatory flock ... */
164 #define LOCK_READ 64 /* which allows concurrent read operations */
165 #define LOCK_WRITE 128 /* which allows concurrent write operations */
166 #define LOCK_RW 192 /* which allows concurrent read & write ops */
168 #define F_LINUX_SPECIFIC_BASE 1024
170 #ifndef HAVE_ARCH_STRUCT_FLOCK
171 #ifndef __ARCH_FLOCK_PAD
172 #define __ARCH_FLOCK_PAD
178 __kernel_off_t l_start;
179 __kernel_off_t l_len;
180 __kernel_pid_t l_pid;
187 #ifndef HAVE_ARCH_STRUCT_FLOCK64
188 #ifndef __ARCH_FLOCK64_PAD
189 #define __ARCH_FLOCK64_PAD
195 __kernel_loff_t l_start;
196 __kernel_loff_t l_len;
197 __kernel_pid_t l_pid;
201 #endif /* !CONFIG_64BIT */
203 #endif /* _ASM_GENERIC_FCNTL_H */