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 01000 /* not fcntl */ 24 #define O_TRUNC 02000 /* not fcntl */ 25 #define O_EXCL 04000 /* not fcntl */ 26 #define O_NOCTTY 010000 /* not fcntl */ 27 28 #define O_NONBLOCK 00004 29 #define O_APPEND 00010 30 #define O_SYNC 020040000 31 32 #define __O_DIRECTORY 0100000 /* Must be a directory. */ 33 #define __O_NOFOLLOW 0200000 /* Do not follow links. */ 34 #define __O_CLOEXEC 010000000 /* Set close_on_exec. */ 35 36 #define __O_DIRECT 02000000 /* Direct disk access. */ 37 #define __O_NOATIME 04000000 /* Do not set atime. */ 38 #define __O_PATH 040000000 /* Resolve pathname but do not open file. */ 39 #define __O_TMPFILE 0100100000 /* Atomically create nameless file. */ 40 41 /* Not necessary, files are always with 64bit off_t. */ 42 #define __O_LARGEFILE 0 43 44 #define __O_DSYNC 040000 /* Synchronize data. */ 45 46 #define F_GETLK 7 /* Get record locking info. */ 47 #define F_SETLK 8 /* Set record locking info (non-blocking). */ 48 #define F_SETLKW 9 /* Set record locking info (blocking). */ 49 #define F_GETLK64 F_GETLK /* Get record locking info. */ 50 #define F_SETLK64 F_SETLK /* Set record locking info (non-blocking). */ 51 #define F_SETLKW64 F_SETLKW /* Set record locking info (blocking). */ 52 53 #define __F_SETOWN 5 /* Get owner of socket (receiver of SIGIO). */ 54 #define __F_GETOWN 6 /* Set owner of socket (receiver of SIGIO). */ 55 56 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf() */ 57 #define F_RDLCK 1 /* Read lock. */ 58 #define F_WRLCK 2 /* Write lock. */ 59 #define F_UNLCK 8 /* Remove lock. */ 60 61 /* for old implementation of bsd flock () */ 62 #define F_EXLCK 16 /* or 3 */ 63 #define F_SHLCK 32 /* or 4 */ 64 65 /* We don't need to support __USE_FILE_OFFSET64. */ 66 struct flock 67 { 68 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 69 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 70 __off_t l_start; /* Offset where the lock begins. */ 71 __off_t l_len; /* Size of the locked area; zero means until EOF. */ 72 __pid_t l_pid; /* Process holding the lock. */ 73 }; 74 75 #ifdef __USE_LARGEFILE64 76 struct flock64 77 { 78 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */ 79 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */ 80 __off64_t l_start; /* Offset where the lock begins. */ 81 __off64_t l_len; /* Size of the locked area; zero means until EOF. */ 82 __pid_t l_pid; /* Process holding the lock. */ 83 }; 84 #endif 85 86 /* Include generic Linux declarations. */ 87 #include <bits/fcntl-linux.h> 88