summaryrefslogtreecommitdiffstats
path: root/include/asm-generic/fcntl.h
blob: a70b2d2bfc14f70940d08bcaef7fac4e185308c9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
#ifndef _ASM_GENERIC_FCNTL_H
#define _ASM_GENERIC_FCNTL_H

#include <linux/types.h>

/*
 * FMODE_EXEC is 0x20
 * FMODE_NONOTIFY is 0x1000000
 * These cannot be used by userspace O_* until internal and external open
 * flags are split.
 * -Eric Paris
 */

/*
 * When introducing new O_* bits, please check its uniqueness in fcntl_init().
 */

#define O_ACCMODE	00000003
#define O_RDONLY	00000000
#define O_WRONLY	00000001
#define O_RDWR		00000002
#ifndef O_CREAT
#define O_CREAT		00000100	/* not fcntl */
#endif
#ifndef O_EXCL
#define O_EXCL		00000200	/* not fcntl */
#endif
#ifndef O_NOCTTY
#define O_NOCTTY	00000400	/* not fcntl */
#endif
#ifndef O_TRUNC
#define O_TRUNC		00001000	/* not fcntl */
#endif
#ifndef O_APPEND
#define O_APPEND	00002000
#endif
#ifndef O_NONBLOCK
#define O_NONBLOCK	00004000
#endif
#ifndef O_DSYNC
#define O_DSYNC		00010000	/* used to be O_SYNC, see below */
#endif
#ifndef FASYNC
#define FASYNC		00020000	/* fcntl, for BSD compatibility */
#endif
#ifndef O_DIRECT
#define O_DIRECT	00040000	/* direct disk access hint */
#endif
#ifndef O_LARGEFILE
#define O_LARGEFILE	00100000
#endif
#ifndef O_DIRECTORY
#define O_DIRECTORY	00200000	/* must be a directory */
#endif
#ifndef O_NOFOLLOW
#define O_NOFOLLOW	00400000	/* don't follow links */
#endif
#ifndef O_NOATIME
#define O_NOATIME	01000000
#endif
#ifndef O_CLOEXEC
#define O_CLOEXEC	02000000	/* set close_on_exec */
#endif

/*
 * Before Linux 2.6.33 only O_DSYNC semantics were implemented, but using
 * the O_SYNC flag.  We continue to use the existing numerical value
 * for O_DSYNC semantics now, but using the correct symbolic name for it.
 * This new value is used to request true Posix O_SYNC semantics.  It is
 * defined in this strange way to make sure applications compiled against
 * new headers get at least O_DSYNC semantics on older kernels.
 *
 * This has the nice side-effect that we can simply test for O_DSYNC
 * wherever we do not care if O_DSYNC or O_SYNC is used.
 *
 * Note: __O_SYNC must never be used directly.
 */
#ifndef O_SYNC
#define __O_SYNC	04000000
#define O_SYNC		(__O_SYNC|O_DSYNC)
#endif

#ifndef O_NDELAY
#define O_NDELAY	O_NONBLOCK
#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 F_GETLK
#define F_GETLK		5
#define F_SETLK		6
#define F_SETLKW	7
#endif
#ifndef F_SETOWN
#define F_SETOWN	8	/* for sockets. */
#define F_GETOWN	9	/* for sockets. */
#endif
#ifndef F_SETSIG
#define F_SETSIG	10	/* for sockets. */
#define F_GETSIG	11	/* for sockets. */
#endif

#ifndef CONFIG_64BIT
#ifndef F_GETLK64
#define F_GETLK64	12	/*  using 'struct flock64' */
#define F_SETLK64	13
#define F_SETLKW64	14
#endif
#endif

#ifndef F_SETOWN_EX
#define F_SETOWN_EX	15
#define F_GETOWN_EX	16
#endif

#define F_OWNER_TID	0
#define F_OWNER_PID	1
#define F_OWNER_PGRP	2

struct f_owner_ex {
	int	type;
	pid_t	pid;
};

/* for F_[GET|SET]FL */
#define FD_CLOEXEC	1	/* actually anything with low bit set goes */

/* for posix fcntl() and lockf() */
#ifndef F_RDLCK
#define F_RDLCK		0
#define F_WRLCK		1
#define F_UNLCK		2
#endif

/* for old implementation of bsd flock () */
#ifndef F_EXLCK
#define F_EXLCK		4	/* or 3 */
#define F_SHLCK		8	/* or 4 */
#endif

/* for leases */
#ifndef F_INPROGRESS
#define F_INPROGRESS	16
#endif

/* 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 */

#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 */

#define F_LINUX_SPECIFIC_BASE	1024

#ifndef HAVE_ARCH_STRUCT_FLOCK
#ifndef __ARCH_FLOCK_PAD
#define __ARCH_FLOCK_PAD
#endif

struct flock {
	short	l_type;
	short	l_whence;
	__kernel_off_t	l_start;
	__kernel_off_t	l_len;
	__kernel_pid_t	l_pid;
	__ARCH_FLOCK_PAD
};
#endif

#ifndef CONFIG_64BIT

#ifndef HAVE_ARCH_STRUCT_FLOCK64
#ifndef __ARCH_FLOCK64_PAD
#define __ARCH_FLOCK64_PAD
#endif

struct flock64 {
	short  l_type;
	short  l_whence;
	__kernel_loff_t l_start;
	__kernel_loff_t l_len;
	__kernel_pid_t  l_pid;
	__ARCH_FLOCK64_PAD
};
#endif
#endif /* !CONFIG_64BIT */

#endif /* _ASM_GENERIC_FCNTL_H */