Edit: fcntl.h
/* O_*, F_*, FD_* bit values for Linux/x86. Copyright (C) 2001-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #ifndef _FCNTL_H # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead." #endif #ifdef __x86_64__ # define __O_LARGEFILE 0 #endif #ifdef __x86_64__ /* Not necessary, we always have 64-bit offsets. */ # define F_GETLK64 5 /* Get record locking info. */ # define F_SETLK64 6 /* Set record locking info (non-blocking). */ # define F_SETLKW64 7 /* Set record locking info (blocking). */ #endif struct flock { short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ #ifndef __USE_FILE_OFFSET64 __off_t l_start; /* Offset where the lock begins. */ __off_t l_len; /* Size of the locked area; zero means until EOF. */ #else __off64_t l_start; /* Offset where the lock begins. */ __off64_t l_len; /* Size of the locked area; zero means until EOF. */ #endif __pid_t l_pid; /* Process holding the lock. */ }; #ifdef __USE_LARGEFILE64 struct flock64 { short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ __off64_t l_start; /* Offset where the lock begins. */ __off64_t l_len; /* Size of the locked area; zero means until EOF. */ __pid_t l_pid; /* Process holding the lock. */ }; #endif /* Include generic Linux declarations. */ #include <bits/fcntl-linux.h>
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