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/* operations for bsd flock(), also used by the kernel implementation */ 149#define LOCK_SH 1 /* shared lock */ 150#define LOCK_EX 2 /* exclusive lock */ 151#define LOCK_NB 4 /* or'd with one of the above to prevent 152 blocking */ 153#define LOCK_UN 8 /* remove lock */ 154 155#define LOCK_MAND 32 /* This is a mandatory flock ... */ 156#define LOCK_READ 64 /* which allows concurrent read operations */ 157#define LOCK_WRITE 128 /* which allows concurrent write operations */ 158#define LOCK_RW 192 /* which allows concurrent read & write ops */ 159 160#define F_LINUX_SPECIFIC_BASE 1024 161 162#ifndef HAVE_ARCH_STRUCT_FLOCK 163#ifndef __ARCH_FLOCK_PAD 164#define __ARCH_FLOCK_PAD 165#endif 166 167struct flock { 168 short l_type; 169 short l_whence; 170 __kernel_off_t l_start; 171 __kernel_off_t l_len; 172 __kernel_pid_t l_pid; 173 __ARCH_FLOCK_PAD 174}; 175#endif 176 177#ifndef CONFIG_64BIT 178 179#ifndef HAVE_ARCH_STRUCT_FLOCK64 180#ifndef __ARCH_FLOCK64_PAD 181#define __ARCH_FLOCK64_PAD 182#endif 183 184struct flock64 { 185 short l_type; 186 short l_whence; 187 __kernel_loff_t l_start; 188 __kernel_loff_t l_len; 189 __kernel_pid_t l_pid; 190 __ARCH_FLOCK64_PAD 191}; 192#endif 193#endif /* !CONFIG_64BIT */ 194 195#endif /* _ASM_GENERIC_FCNTL_H */ 196