1 /* O_*, F_*, FD_* bit values for Linux. 2 Copyright (C) 1995-2021 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library. If not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #ifndef _FCNTL_H 20 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead." 21 #endif 22 23 #define O_CREAT 00000100 /* not fcntl. */ 24 #define O_TRUNC 00001000 /* not fcntl. */ 25 #define O_EXCL 00000200 /* not fcntl. */ 26 #define O_NOCTTY 00000400 /* not fcntl. */ 27 28 #define O_NONBLOCK 00004000 29 #define O_APPEND 00002000 30 #define O_SYNC 04000000 31 32 #define __O_DIRECTORY 00200000 /* Must be a directory. */ 33 #define __O_NOFOLLOW 00400000 /* Do not follow links. */ 34 #define __O_CLOEXEC 02000000 /* Set close_on_exec. */ 35 36 #define __O_DIRECT 00040000 /* Direct disk access. */ 37 #define __O_NOATIME 01000000 /* Do not set atime. */ 38 #define __O_PATH 010000000 /* Resolve pathname but do not open file. */ 39 40 /* Not necessary, files are always with 64bit off_t. */ 41 #define __O_LARGEFILE 00100000 42 43 #define __O_DSYNC 00010000 /* Synchronize data. */ 44 45 #define F_GETLK 5 /* Get record locking info. */ 46 #define F_SETLK 6 /* Set record locking info (non-blocking). */ 47 #define F_SETLKW 7 /* Set record locking info (blocking). */ 48 #define F_GETLK64 12 /* Get record locking info. */ 49 #define F_SETLK64 13 /* Set record locking info (non-blocking). */ 50 #define F_SETLKW64 14 /* Set record locking info (blocking). */ 51 52 #define __F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */ 53 #define __F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */ 54 55 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */ 56 #define F_RDLCK 0 /* Read lock. */ 57 #define F_WRLCK 1 /* Write lock. */ 58 #define F_UNLCK 2 /* Remove lock. */ 59 60 /* for old implementation of bsd flock (). */ 61 #define F_EXLCK 4 /* or 3. */ 62 #define F_SHLCK 8 /* or 4. */ 63 64 /* We don't need to support __USE_FILE_OFFSET64. */ 65 struct flock 66 { 67 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 68 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 69 __off_t l_start; /* Offset where the lock begins. */ 70 __off_t l_len; /* Size of the locked area; zero means until EOF. */ 71 __pid_t l_pid; /* Process holding the lock. */ 72 }; 73 74 #ifdef __USE_LARGEFILE64 75 struct flock64 76 { 77 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 78 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 79 __off64_t l_start; /* Offset where the lock begins. */ 80 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 81 __pid_t l_pid; /* Process holding the lock. */ 82 }; 83 #endif 84 85 /* Include generic Linux declarations. */ 86 #include <bits/fcntl-linux.h> 87