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 2 126 127 struct 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 166 167 struct 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 183 184 struct 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