2017-11-01 15:07:57 +01:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2005-04-16 15:20:36 -07:00
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#ifndef _LINUX_FCNTL_H
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#define _LINUX_FCNTL_H
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2020-01-18 23:07:59 +11:00
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#include <linux/stat.h>
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2012-10-13 10:46:48 +01:00
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#include <uapi/linux/fcntl.h>
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2026-05-16 16:42:39 +02:00
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#include <uapi/linux/openat2.h>
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2005-04-16 15:20:36 -07:00
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2020-01-18 23:07:59 +11:00
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/* List of all valid flags for the open/openat flags argument: */
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2017-04-27 09:42:24 +02:00
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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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2020-09-06 22:39:49 +00:00
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O_APPEND | O_NDELAY | O_NONBLOCK | __O_SYNC | O_DSYNC | \
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2017-04-27 09:42:24 +02:00
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FASYNC | O_DIRECT | O_LARGEFILE | O_DIRECTORY | O_NOFOLLOW | \
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2026-04-24 13:46:02 +02:00
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O_NOATIME | O_CLOEXEC | O_PATH | __O_TMPFILE | O_EMPTYPATH)
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2005-04-16 15:20:36 -07:00
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2026-05-16 16:42:39 +02:00
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/* List of all valid flags for openat2(2)'s how->flags argument. */
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#define VALID_OPENAT2_FLAGS (VALID_OPEN_FLAGS | OPENAT2_REGULAR)
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/*
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* Kernel-internal carrier for OPENAT2_REGULAR. The UAPI bit lives in the
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* upper 32 bits of open_how::flags so open()/openat() cannot encode it.
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* build_open_flags() translates it to this internal flag, which then
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* propagates through op->open_flag and f->f_flags exactly like __FMODE_EXEC.
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* do_dentry_open() strips it so userspace cannot observe it via
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* fcntl(F_GETFL).
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*
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* Bit 30 is not claimed by any O_* flag on any architecture and stays clear
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* of the sign bit of the int op->open_flag. fcntl_init() enforces that it
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* never aliases an open-flag bit.
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*/
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#define __O_REGULAR (1 << 30)
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2020-01-18 23:07:59 +11:00
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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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2020-12-17 09:19:10 -07:00
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RESOLVE_BENEATH | RESOLVE_IN_ROOT | RESOLVE_CACHED)
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2020-01-18 23:07:59 +11:00
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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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2005-06-23 00:09:58 -07:00
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#ifndef force_o_largefile
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2018-05-16 11:18:49 +03:00
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#define force_o_largefile() (!IS_ENABLED(CONFIG_ARCH_32BIT_OFF_T))
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2005-06-23 00:09:58 -07:00
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#endif
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2005-04-16 15:20:36 -07:00
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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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