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_PATH
 84#define O_PATH		010000000
 85#endif
 86
 87#ifndef O_NDELAY
 88#define O_NDELAY	O_NONBLOCK
 89#endif
 90
 91#define F_DUPFD		0	/* dup */
 92#define F_GETFD		1	/* get close_on_exec */
 93#define F_SETFD		2	/* set/clear close_on_exec */
 94#define F_GETFL		3	/* get file->f_flags */
 95#define F_SETFL		4	/* set file->f_flags */
 96#ifndef F_GETLK
 97#define F_GETLK		5
 98#define F_SETLK		6
 99#define F_SETLKW	7
100#endif
101#ifndef F_SETOWN
102#define F_SETOWN	8	/* for sockets. */
103#define F_GETOWN	9	/* for sockets. */
104#endif
105#ifndef F_SETSIG
106#define F_SETSIG	10	/* for sockets. */
107#define F_GETSIG	11	/* for sockets. */
108#endif
109
110#ifndef CONFIG_64BIT
111#ifndef F_GETLK64
112#define F_GETLK64	12	/*  using 'struct flock64' */
113#define F_SETLK64	13
114#define F_SETLKW64	14
115#endif
116#endif
117
118#ifndef F_SETOWN_EX
119#define F_SETOWN_EX	15
120#define F_GETOWN_EX	16
121#endif
122
123#define F_OWNER_TID	0
124#define F_OWNER_PID	1
125#define F_OWNER_PGRP	2
126
127struct f_owner_ex {
128	int	type;
129	__kernel_pid_t	pid;
130};
131
132/* for F_[GET|SET]FL */
133#define FD_CLOEXEC	1	/* actually anything with low bit set goes */
134
135/* for posix fcntl() and lockf() */
136#ifndef F_RDLCK
137#define F_RDLCK		0
138#define F_WRLCK		1
139#define F_UNLCK		2
140#endif
141
142/* for old implementation of bsd flock () */
143#ifndef F_EXLCK
144#define F_EXLCK		4	/* or 3 */
145#define F_SHLCK		8	/* or 4 */
146#endif
147
148/* for leases */
149#ifndef F_INPROGRESS
150#define F_INPROGRESS	16
151#endif
152
153/* operations for bsd flock(), also used by the kernel implementation */
154#define LOCK_SH		1	/* shared lock */
155#define LOCK_EX		2	/* exclusive lock */
156#define LOCK_NB		4	/* or'd with one of the above to prevent
157				   blocking */
158#define LOCK_UN		8	/* remove lock */
159
160#define LOCK_MAND	32	/* This is a mandatory flock ... */
161#define LOCK_READ	64	/* which allows concurrent read operations */
162#define LOCK_WRITE	128	/* which allows concurrent write operations */
163#define LOCK_RW		192	/* which allows concurrent read & write ops */
164
165#define F_LINUX_SPECIFIC_BASE	1024
166
167#ifndef HAVE_ARCH_STRUCT_FLOCK
168#ifndef __ARCH_FLOCK_PAD
169#define __ARCH_FLOCK_PAD
170#endif
171
172struct flock {
173	short	l_type;
174	short	l_whence;
175	__kernel_off_t	l_start;
176	__kernel_off_t	l_len;
177	__kernel_pid_t	l_pid;
178	__ARCH_FLOCK_PAD
179};
180#endif
181
182#ifndef CONFIG_64BIT
183
184#ifndef HAVE_ARCH_STRUCT_FLOCK64
185#ifndef __ARCH_FLOCK64_PAD
186#define __ARCH_FLOCK64_PAD
187#endif
188
189struct flock64 {
190	short  l_type;
191	short  l_whence;
192	__kernel_loff_t l_start;
193	__kernel_loff_t l_len;
194	__kernel_pid_t  l_pid;
195	__ARCH_FLOCK64_PAD
196};
197#endif
198#endif /* !CONFIG_64BIT */
199
200#endif /* _ASM_GENERIC_FCNTL_H */