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 0x4000000 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_TMPFILE 88 #define __O_TMPFILE 020000000 89 #endif 90 91 /* a horrid kludge trying to make sure that this will fail on old kernels */ 92 #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY) 93 #define O_TMPFILE_MASK (__O_TMPFILE | O_DIRECTORY | O_CREAT) 94 95 #ifndef O_NDELAY 96 #define O_NDELAY O_NONBLOCK 97 #endif 98 99 #define F_DUPFD 0 /* dup */ 100 #define F_GETFD 1 /* get close_on_exec */ 101 #define F_SETFD 2 /* set/clear close_on_exec */ 102 #define F_GETFL 3 /* get file->f_flags */ 103 #define F_SETFL 4 /* set file->f_flags */ 104 #ifndef F_GETLK 105 #define F_GETLK 5 106 #define F_SETLK 6 107 #define F_SETLKW 7 108 #endif 109 #ifndef F_SETOWN 110 #define F_SETOWN 8 /* for sockets. */ 111 #define F_GETOWN 9 /* for sockets. */ 112 #endif 113 #ifndef F_SETSIG 114 #define F_SETSIG 10 /* for sockets. */ 115 #define F_GETSIG 11 /* for sockets. */ 116 #endif 117 118 #ifndef CONFIG_64BIT 119 #ifndef F_GETLK64 120 #define F_GETLK64 12 /* using 'struct flock64' */ 121 #define F_SETLK64 13 122 #define F_SETLKW64 14 123 #endif 124 #endif 125 126 #ifndef F_SETOWN_EX 127 #define F_SETOWN_EX 15 128 #define F_GETOWN_EX 16 129 #endif 130 131 #ifndef F_GETOWNER_UIDS 132 #define F_GETOWNER_UIDS 17 133 #endif 134 135 /* 136 * Open File Description Locks 137 * 138 * Usually record locks held by a process are released on *any* close and are 139 * not inherited across a fork(). 140 * 141 * These cmd values will set locks that conflict with process-associated 142 * record locks, but are "owned" by the open file description, not the 143 * process. This means that they are inherited across fork() like BSD (flock) 144 * locks, and they are only released automatically when the last reference to 145 * the the open file against which they were acquired is put. 146 */ 147 #define F_OFD_GETLK 36 148 #define F_OFD_SETLK 37 149 #define F_OFD_SETLKW 38 150 151 #define F_OWNER_TID 0 152 #define F_OWNER_PID 1 153 #define F_OWNER_PGRP 2 154 155 struct f_owner_ex { 156 int type; 157 __kernel_pid_t pid; 158 }; 159 160 /* for F_[GET|SET]FL */ 161 #define FD_CLOEXEC 1 /* actually anything with low bit set goes */ 162 163 /* for posix fcntl() and lockf() */ 164 #ifndef F_RDLCK 165 #define F_RDLCK 0 166 #define F_WRLCK 1 167 #define F_UNLCK 2 168 #endif 169 170 /* for old implementation of bsd flock () */ 171 #ifndef F_EXLCK 172 #define F_EXLCK 4 /* or 3 */ 173 #define F_SHLCK 8 /* or 4 */ 174 #endif 175 176 /* operations for bsd flock(), also used by the kernel implementation */ 177 #define LOCK_SH 1 /* shared lock */ 178 #define LOCK_EX 2 /* exclusive lock */ 179 #define LOCK_NB 4 /* or'd with one of the above to prevent 180 blocking */ 181 #define LOCK_UN 8 /* remove lock */ 182 183 #define LOCK_MAND 32 /* This is a mandatory flock ... */ 184 #define LOCK_READ 64 /* which allows concurrent read operations */ 185 #define LOCK_WRITE 128 /* which allows concurrent write operations */ 186 #define LOCK_RW 192 /* which allows concurrent read & write ops */ 187 188 #define F_LINUX_SPECIFIC_BASE 1024 189 190 #ifndef HAVE_ARCH_STRUCT_FLOCK 191 #ifndef __ARCH_FLOCK_PAD 192 #define __ARCH_FLOCK_PAD 193 #endif 194 195 struct flock { 196 short l_type; 197 short l_whence; 198 __kernel_off_t l_start; 199 __kernel_off_t l_len; 200 __kernel_pid_t l_pid; 201 __ARCH_FLOCK_PAD 202 }; 203 #endif 204 205 #ifndef HAVE_ARCH_STRUCT_FLOCK64 206 #ifndef __ARCH_FLOCK64_PAD 207 #define __ARCH_FLOCK64_PAD 208 #endif 209 210 struct flock64 { 211 short l_type; 212 short l_whence; 213 __kernel_loff_t l_start; 214 __kernel_loff_t l_len; 215 __kernel_pid_t l_pid; 216 __ARCH_FLOCK64_PAD 217 }; 218 #endif 219 220 #endif /* _ASM_GENERIC_FCNTL_H */ 221