Root/include/asm-generic/fcntl.h

1#ifndef _ASM_GENERIC_FCNTL_H
2#define _ASM_GENERIC_FCNTL_H
3
4#include <linux/types.h>
5
6/*
7 * FMODE_EXEC is 0x20
8 * FMODE_NONOTIFY is 0x1000000
9 * These cannot be used by userspace O_* until internal and external open
10 * flags are split.
11 * -Eric Paris
12 */
13
14/*
15 * When introducing new O_* bits, please check its uniqueness in fcntl_init().
16 */
17
18#define O_ACCMODE 00000003
19#define O_RDONLY 00000000
20#define O_WRONLY 00000001
21#define O_RDWR 00000002
22#ifndef O_CREAT
23#define O_CREAT 00000100 /* not fcntl */
24#endif
25#ifndef O_EXCL
26#define O_EXCL 00000200 /* not fcntl */
27#endif
28#ifndef O_NOCTTY
29#define O_NOCTTY 00000400 /* not fcntl */
30#endif
31#ifndef O_TRUNC
32#define O_TRUNC 00001000 /* not fcntl */
33#endif
34#ifndef O_APPEND
35#define O_APPEND 00002000
36#endif
37#ifndef O_NONBLOCK
38#define O_NONBLOCK 00004000
39#endif
40#ifndef O_DSYNC
41#define O_DSYNC 00010000 /* used to be O_SYNC, see below */
42#endif
43#ifndef FASYNC
44#define FASYNC 00020000 /* fcntl, for BSD compatibility */
45#endif
46#ifndef O_DIRECT
47#define O_DIRECT 00040000 /* direct disk access hint */
48#endif
49#ifndef O_LARGEFILE
50#define O_LARGEFILE 00100000
51#endif
52#ifndef O_DIRECTORY
53#define O_DIRECTORY 00200000 /* must be a directory */
54#endif
55#ifndef O_NOFOLLOW
56#define O_NOFOLLOW 00400000 /* don't follow links */
57#endif
58#ifndef O_NOATIME
59#define O_NOATIME 01000000
60#endif
61#ifndef O_CLOEXEC
62#define O_CLOEXEC 02000000 /* set close_on_exec */
63#endif
64
65/*
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.
72 *
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.
75 *
76 * Note: __O_SYNC must never be used directly.
77 */
78#ifndef O_SYNC
79#define __O_SYNC 04000000
80#define O_SYNC (__O_SYNC|O_DSYNC)
81#endif
82
83#ifndef O_NDELAY
84#define O_NDELAY O_NONBLOCK
85#endif
86
87#define F_DUPFD 0 /* dup */
88#define F_GETFD 1 /* get close_on_exec */
89#define F_SETFD 2 /* set/clear close_on_exec */
90#define F_GETFL 3 /* get file->f_flags */
91#define F_SETFL 4 /* set file->f_flags */
92#ifndef F_GETLK
93#define F_GETLK 5
94#define F_SETLK 6
95#define F_SETLKW 7
96#endif
97#ifndef F_SETOWN
98#define F_SETOWN 8 /* for sockets. */
99#define F_GETOWN 9 /* for sockets. */
100#endif
101#ifndef F_SETSIG
102#define F_SETSIG 10 /* for sockets. */
103#define F_GETSIG 11 /* for sockets. */
104#endif
105
106#ifndef CONFIG_64BIT
107#ifndef F_GETLK64
108#define F_GETLK64 12 /* using 'struct flock64' */
109#define F_SETLK64 13
110#define F_SETLKW64 14
111#endif
112#endif
113
114#ifndef F_SETOWN_EX
115#define F_SETOWN_EX 15
116#define F_GETOWN_EX 16
117#endif
118
119#define F_OWNER_TID 0
120#define F_OWNER_PID 1
121#define F_OWNER_PGRP 2
122
123struct f_owner_ex {
124    int type;
125    __kernel_pid_t pid;
126};
127
128/* for F_[GET|SET]FL */
129#define FD_CLOEXEC 1 /* actually anything with low bit set goes */
130
131/* for posix fcntl() and lockf() */
132#ifndef F_RDLCK
133#define F_RDLCK 0
134#define F_WRLCK 1
135#define F_UNLCK 2
136#endif
137
138/* for old implementation of bsd flock () */
139#ifndef F_EXLCK
140#define F_EXLCK 4 /* or 3 */
141#define F_SHLCK 8 /* or 4 */
142#endif
143
144/* for leases */
145#ifndef F_INPROGRESS
146#define F_INPROGRESS 16
147#endif
148
149/* operations for bsd flock(), also used by the kernel implementation */
150#define LOCK_SH 1 /* shared lock */
151#define LOCK_EX 2 /* exclusive lock */
152#define LOCK_NB 4 /* or'd with one of the above to prevent
153                   blocking */
154#define LOCK_UN 8 /* remove lock */
155
156#define LOCK_MAND 32 /* This is a mandatory flock ... */
157#define LOCK_READ 64 /* which allows concurrent read operations */
158#define LOCK_WRITE 128 /* which allows concurrent write operations */
159#define LOCK_RW 192 /* which allows concurrent read & write ops */
160
161#define F_LINUX_SPECIFIC_BASE 1024
162
163#ifndef HAVE_ARCH_STRUCT_FLOCK
164#ifndef __ARCH_FLOCK_PAD
165#define __ARCH_FLOCK_PAD
166#endif
167
168struct flock {
169    short l_type;
170    short l_whence;
171    __kernel_off_t l_start;
172    __kernel_off_t l_len;
173    __kernel_pid_t l_pid;
174    __ARCH_FLOCK_PAD
175};
176#endif
177
178#ifndef CONFIG_64BIT
179
180#ifndef HAVE_ARCH_STRUCT_FLOCK64
181#ifndef __ARCH_FLOCK64_PAD
182#define __ARCH_FLOCK64_PAD
183#endif
184
185struct flock64 {
186    short l_type;
187    short l_whence;
188    __kernel_loff_t l_start;
189    __kernel_loff_t l_len;
190    __kernel_pid_t l_pid;
191    __ARCH_FLOCK64_PAD
192};
193#endif
194#endif /* !CONFIG_64BIT */
195
196#endif /* _ASM_GENERIC_FCNTL_H */
197

Archive Download this file



interactive