1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_FCNTL_H
3 #define _LINUX_FCNTL_H
4 
5 #include <linux/stat.h>
6 #include <uapi/linux/fcntl.h>
7 
8 /* List of all valid flags for the open/openat flags argument: */
9 #define VALID_OPEN_FLAGS \
10 	(O_RDONLY | O_WRONLY | O_RDWR | O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC | \
11 	 O_APPEND | O_NDELAY | O_NONBLOCK | __O_SYNC | O_DSYNC | \
12 	 FASYNC	| O_DIRECT | O_LARGEFILE | O_DIRECTORY | O_NOFOLLOW | \
13 	 O_NOATIME | O_CLOEXEC | O_PATH | __O_TMPFILE)
14 
15 /* List of all valid flags for the how->resolve argument: */
16 #define VALID_RESOLVE_FLAGS \
17 	(RESOLVE_NO_XDEV | RESOLVE_NO_MAGICLINKS | RESOLVE_NO_SYMLINKS | \
18 	 RESOLVE_BENEATH | RESOLVE_IN_ROOT | RESOLVE_CACHED)
19 
20 /* List of all open_how "versions". */
21 #define OPEN_HOW_SIZE_VER0	24 /* sizeof first published struct */
22 #define OPEN_HOW_SIZE_LATEST	OPEN_HOW_SIZE_VER0
23 
24 #ifndef force_o_largefile
25 #define force_o_largefile() (!IS_ENABLED(CONFIG_ARCH_32BIT_OFF_T))
26 #endif
27 
28 #if BITS_PER_LONG == 32
29 #define IS_GETLK32(cmd)		((cmd) == F_GETLK)
30 #define IS_SETLK32(cmd)		((cmd) == F_SETLK)
31 #define IS_SETLKW32(cmd)	((cmd) == F_SETLKW)
32 #define IS_GETLK64(cmd)		((cmd) == F_GETLK64)
33 #define IS_SETLK64(cmd)		((cmd) == F_SETLK64)
34 #define IS_SETLKW64(cmd)	((cmd) == F_SETLKW64)
35 #else
36 #define IS_GETLK32(cmd)		(0)
37 #define IS_SETLK32(cmd)		(0)
38 #define IS_SETLKW32(cmd)	(0)
39 #define IS_GETLK64(cmd)		((cmd) == F_GETLK)
40 #define IS_SETLK64(cmd)		((cmd) == F_SETLK)
41 #define IS_SETLKW64(cmd)	((cmd) == F_SETLKW)
42 #endif /* BITS_PER_LONG == 32 */
43 
44 #define IS_GETLK(cmd)	(IS_GETLK32(cmd)  || IS_GETLK64(cmd))
45 #define IS_SETLK(cmd)	(IS_SETLK32(cmd)  || IS_SETLK64(cmd))
46 #define IS_SETLKW(cmd)	(IS_SETLKW32(cmd) || IS_SETLKW64(cmd))
47 
48 #endif
49