fcntl.h (2125B) - Raw
1 /* O_*, F_*, FD_* bit values for Linux. 2 Copyright (C) 1995-2025 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_DIRECTORY 040000 /* Must be a directory. */ 24 #define __O_NOFOLLOW 0100000 /* Do not follow links. */ 25 #define __O_DIRECT 0200000 /* Direct disk access. */ 26 #define __O_LARGEFILE 0400000 27 28 struct flock 29 { 30 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 31 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 32 #ifndef __USE_FILE_OFFSET64 33 __off_t l_start; /* Offset where the lock begins. */ 34 __off_t l_len; /* Size of the locked area; zero means until EOF. */ 35 #else 36 __off64_t l_start; /* Offset where the lock begins. */ 37 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 38 #endif 39 __pid_t l_pid; /* Process holding the lock. */ 40 }; 41 42 #ifdef __USE_LARGEFILE64 43 struct flock64 44 { 45 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 46 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 47 __off64_t l_start; /* Offset where the lock begins. */ 48 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 49 __pid_t l_pid; /* Process holding the lock. */ 50 }; 51 #endif 52 53 /* Include generic Linux declarations. */ 54 #include <bits/fcntl-linux.h>