1 /* O_*, F_*, FD_* bit values for Linux. 2 Copyright (C) 2000-2021 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 #include <bits/wordsize.h> 24 25 #if __WORDSIZE == 64 26 /* Not necessary, files are always with 64bit off_t. */ 27 # define __O_LARGEFILE 0 28 #endif 29 30 #if __WORDSIZE == 64 31 /* Not necessary, we always have 64-bit offsets. */ 32 # define F_GETLK64 5 /* Get record locking info. */ 33 # define F_SETLK64 6 /* Set record locking info (non-blocking). */ 34 # define F_SETLKW64 7 /* Set record locking info (blocking). */ 35 #endif 36 37 struct flock 38 { 39 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 40 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 41 #if __WORDSIZE == 64 || !defined __USE_FILE_OFFSET64 42 __off_t l_start; /* Offset where the lock begins. */ 43 __off_t l_len; /* Size of the locked area; zero means until EOF. */ 44 #else 45 __off64_t l_start; /* Offset where the lock begins. */ 46 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 47 #endif 48 __pid_t l_pid; /* Process holding the lock. */ 49 }; 50 51 #ifdef __USE_LARGEFILE64 52 struct flock64 53 { 54 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 55 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 56 __off64_t l_start; /* Offset where the lock begins. */ 57 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 58 __pid_t l_pid; /* Process holding the lock. */ 59 }; 60 #endif 61 62 #if __WORDSIZE == 64 63 # define __POSIX_FADV_DONTNEED 6 /* Don't need these pages. */ 64 # define __POSIX_FADV_NOREUSE 7 /* Data will be accessed once. */ 65 #else 66 # define __POSIX_FADV_DONTNEED 4 /* Don't need these pages. */ 67 # define __POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */ 68 #endif 69 70 /* Include generic Linux declarations. */ 71 #include <bits/fcntl-linux.h>