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