1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1995, 1996, 1997, 1998 by Ralf Baechle 7 */ 8 #ifndef __ASM_FCNTL_H 9 #define __ASM_FCNTL_H 10 11 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files 12 located on an ext2 file system */ 13 #define O_ACCMODE 0x0003 14 #define O_RDONLY 0x0000 15 #define O_WRONLY 0x0001 16 #define O_RDWR 0x0002 17 #define O_APPEND 0x0008 18 #define O_SYNC 0x0010 19 #define O_NONBLOCK 0x0080 20 #define O_CREAT 0x0100 /* not fcntl */ 21 #define O_TRUNC 0x0200 /* not fcntl */ 22 #define O_EXCL 0x0400 /* not fcntl */ 23 #define O_NOCTTY 0x0800 /* not fcntl */ 24 #define FASYNC 0x1000 /* fcntl, for BSD compatibility */ 25 #define O_LARGEFILE 0x2000 /* allow large file opens */ 26 #define O_DIRECT 0x8000 /* direct disk access hint */ 27 #define O_DIRECTORY 0x10000 /* must be a directory */ 28 #define O_NOFOLLOW 0x20000 /* don't follow links */ 29 30 #define O_NDELAY O_NONBLOCK 31 32 #define F_DUPFD 0 /* dup */ 33 #define F_GETFD 1 /* get close_on_exec */ 34 #define F_SETFD 2 /* set/clear close_on_exec */ 35 #define F_GETFL 3 /* get file->f_flags */ 36 #define F_SETFL 4 /* set file->f_flags */ 37 #define F_GETLK 14 38 #define F_SETLK 6 39 #define F_SETLKW 7 40 41 #define F_SETOWN 24 /* for sockets. */ 42 #define F_GETOWN 23 /* for sockets. */ 43 #define F_SETSIG 10 /* for sockets. */ 44 #define F_GETSIG 11 /* for sockets. */ 45 46 #define F_GETLK64 33 /* using 'struct flock64' */ 47 #define F_SETLK64 34 48 #define F_SETLKW64 35 49 50 /* for F_[GET|SET]FL */ 51 #define FD_CLOEXEC 1 /* actually anything with low bit set goes */ 52 53 /* for posix fcntl() and lockf() */ 54 #define F_RDLCK 0 55 #define F_WRLCK 1 56 #define F_UNLCK 2 57 58 /* for old implementation of bsd flock () */ 59 #define F_EXLCK 4 /* or 3 */ 60 #define F_SHLCK 8 /* or 4 */ 61 62 /* for leases */ 63 #define F_INPROGRESS 16 64 65 /* operations for bsd flock(), also used by the kernel implementation */ 66 #define LOCK_SH 1 /* shared lock */ 67 #define LOCK_EX 2 /* exclusive lock */ 68 #define LOCK_NB 4 /* or'd with one of the above to prevent 69 blocking */ 70 #define LOCK_UN 8 /* remove lock */ 71 72 #define LOCK_MAND 32 /* This is a mandatory flock */ 73 #define LOCK_READ 64 /* ... Which allows concurrent read operations */ 74 #define LOCK_WRITE 128 /* ... Which allows concurrent write operations */ 75 #define LOCK_RW 192 /* ... Which allows concurrent read & write ops */ 76 77 /* 78 * The flavours of struct flock. "struct flock" is the ABI compliant 79 * variant. Finally struct flock64 is the LFS variant of struct flock. As 80 * a historic accident and inconsistence with the ABI definition it doesn't 81 * contain all the same fields as struct flock. 82 */ 83 84 typedef struct flock { 85 short l_type; 86 short l_whence; 87 __kernel_off_t l_start; 88 __kernel_off_t l_len; 89 long l_sysid; 90 __kernel_pid_t l_pid; 91 long pad[4]; 92 } flock_t; 93 94 typedef struct flock64 { 95 short l_type; 96 short l_whence; 97 loff_t l_start; 98 loff_t l_len; 99 pid_t l_pid; 100 } flock64_t; 101 102 #define F_LINUX_SPECIFIC_BASE 1024 103 104 #endif /* __ASM_FCNTL_H */ 105