include/linux/fcntl.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef _LINUX_FCNTL_H
0003 #define _LINUX_FCNTL_H
0004
0005 #include <linux/stat.h>
0006 #include <uapi/linux/fcntl.h>
0007
0008 /* List of all valid flags for the open/openat flags argument: */
0009 #define VALID_OPEN_FLAGS \
0010     (O_RDONLY | O_WRONLY | O_RDWR | O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC | \
0011      O_APPEND | O_NDELAY | O_NONBLOCK | __O_SYNC | O_DSYNC | \
0012      FASYNC | O_DIRECT | O_LARGEFILE | O_DIRECTORY | O_NOFOLLOW | \
0013      O_NOATIME | O_CLOEXEC | O_PATH | __O_TMPFILE)
0014
0015 /* List of all valid flags for the how->resolve argument: */
0016 #define VALID_RESOLVE_FLAGS \
0017     (RESOLVE_NO_XDEV | RESOLVE_NO_MAGICLINKS | RESOLVE_NO_SYMLINKS | \
0018      RESOLVE_BENEATH | RESOLVE_IN_ROOT | RESOLVE_CACHED)
0019
0020 /* List of all open_how "versions". */
0021 #define OPEN_HOW_SIZE_VER0  24 /* sizeof first published struct */
0022 #define OPEN_HOW_SIZE_LATEST    OPEN_HOW_SIZE_VER0
0023
0024 #ifndef force_o_largefile
0025 #define force_o_largefile() (!IS_ENABLED(CONFIG_ARCH_32BIT_OFF_T))
0026 #endif
0027
0028 #if BITS_PER_LONG == 32
0029 #define IS_GETLK32(cmd)     ((cmd) == F_GETLK)
0030 #define IS_SETLK32(cmd)     ((cmd) == F_SETLK)
0031 #define IS_SETLKW32(cmd)    ((cmd) == F_SETLKW)
0032 #define IS_GETLK64(cmd)     ((cmd) == F_GETLK64)
0033 #define IS_SETLK64(cmd)     ((cmd) == F_SETLK64)
0034 #define IS_SETLKW64(cmd)    ((cmd) == F_SETLKW64)
0035 #else
0036 #define IS_GETLK32(cmd)     (0)
0037 #define IS_SETLK32(cmd)     (0)
0038 #define IS_SETLKW32(cmd)    (0)
0039 #define IS_GETLK64(cmd)     ((cmd) == F_GETLK)
0040 #define IS_SETLK64(cmd)     ((cmd) == F_SETLK)
0041 #define IS_SETLKW64(cmd)    ((cmd) == F_SETLKW)
0042 #endif /* BITS_PER_LONG == 32 */
0043
0044 #define IS_GETLK(cmd)   (IS_GETLK32(cmd)  || IS_GETLK64(cmd))
0045 #define IS_SETLK(cmd)   (IS_SETLK32(cmd)  || IS_SETLK64(cmd))
0046 #define IS_SETLKW(cmd)  (IS_SETLKW32(cmd) || IS_SETLKW64(cmd))
0047
0048 #endif