53 строки
1.8 KiB
C
53 строки
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_FCNTL_H
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#define _LINUX_FCNTL_H
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#include <linux/stat.h>
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#include <uapi/linux/fcntl.h>
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/* List of all valid flags for the open/openat flags argument: */
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#define VALID_OPEN_FLAGS \
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(O_RDONLY | O_WRONLY | O_RDWR | O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC | \
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O_APPEND | O_NDELAY | O_NONBLOCK | __O_SYNC | O_DSYNC | \
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FASYNC | O_DIRECT | O_LARGEFILE | O_DIRECTORY | O_NOFOLLOW | \
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O_NOATIME | O_CLOEXEC | O_PATH | __O_TMPFILE)
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/* List of all valid flags for the how->upgrade_mask argument: */
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#define VALID_UPGRADE_FLAGS \
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(UPGRADE_NOWRITE | UPGRADE_NOREAD)
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/* List of all valid flags for the how->resolve argument: */
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#define VALID_RESOLVE_FLAGS \
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(RESOLVE_NO_XDEV | RESOLVE_NO_MAGICLINKS | RESOLVE_NO_SYMLINKS | \
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RESOLVE_BENEATH | RESOLVE_IN_ROOT | RESOLVE_CACHED)
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/* List of all open_how "versions". */
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#define OPEN_HOW_SIZE_VER0 24 /* sizeof first published struct */
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#define OPEN_HOW_SIZE_LATEST OPEN_HOW_SIZE_VER0
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#ifndef force_o_largefile
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#define force_o_largefile() (!IS_ENABLED(CONFIG_ARCH_32BIT_OFF_T))
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#endif
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#if BITS_PER_LONG == 32
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#define IS_GETLK32(cmd) ((cmd) == F_GETLK)
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#define IS_SETLK32(cmd) ((cmd) == F_SETLK)
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#define IS_SETLKW32(cmd) ((cmd) == F_SETLKW)
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#define IS_GETLK64(cmd) ((cmd) == F_GETLK64)
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#define IS_SETLK64(cmd) ((cmd) == F_SETLK64)
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#define IS_SETLKW64(cmd) ((cmd) == F_SETLKW64)
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#else
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#define IS_GETLK32(cmd) (0)
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#define IS_SETLK32(cmd) (0)
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#define IS_SETLKW32(cmd) (0)
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#define IS_GETLK64(cmd) ((cmd) == F_GETLK)
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#define IS_SETLK64(cmd) ((cmd) == F_SETLK)
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#define IS_SETLKW64(cmd) ((cmd) == F_SETLKW)
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#endif /* BITS_PER_LONG == 32 */
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#define IS_GETLK(cmd) (IS_GETLK32(cmd) || IS_GETLK64(cmd))
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#define IS_SETLK(cmd) (IS_SETLK32(cmd) || IS_SETLK64(cmd))
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#define IS_SETLKW(cmd) (IS_SETLKW32(cmd) || IS_SETLKW64(cmd))
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#endif
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