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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

#ifndef _ASM_GENERIC_FCNTL_H

#define _ASM_GENERIC_FCNTL_H

#include <linux/types.h>

* FMODE_EXEC is 0x20

* FMODE_NONOTIFY is 0x4000000

* These cannot be used by userspace O_* until internal and external open

* flags are split.

* -Eric Paris

* When introducing new O_* bits, please check its uniqueness in fcntl_init().

#define O_ACCMODE 00000003

#define O_RDONLY 00000000

#define O_WRONLY 00000001

#define O_RDWR 00000002

#ifndef O_CREAT

#define O_CREAT 00000100 /* not fcntl */

#endif

#ifndef O_EXCL

#define O_EXCL 00000200 /* not fcntl */

#endif

#ifndef O_NOCTTY

#define O_NOCTTY 00000400 /* not fcntl */

#endif

#ifndef O_TRUNC

#define O_TRUNC 00001000 /* not fcntl */

#endif

#ifndef O_APPEND

#define O_APPEND 00002000

#endif

#ifndef O_NONBLOCK

#define O_NONBLOCK 00004000

#endif

#ifndef O_DSYNC

#define O_DSYNC 00010000 /* used to be O_SYNC, see below */

#endif

#ifndef FASYNC

#define FASYNC 00020000 /* fcntl, for BSD compatibility */

#endif

#ifndef O_DIRECT

#define O_DIRECT 00040000 /* direct disk access hint */

#endif

#ifndef O_LARGEFILE

#define O_LARGEFILE 00100000

#endif

#ifndef O_DIRECTORY

#define O_DIRECTORY 00200000 /* must be a directory */

#endif

#ifndef O_NOFOLLOW

#define O_NOFOLLOW 00400000 /* don't follow links */

#endif

#ifndef O_NOATIME

#define O_NOATIME 01000000

#endif

#ifndef O_CLOEXEC

#define O_CLOEXEC 02000000 /* set close_on_exec */

#endif

* Before Linux 2.6.33 only O_DSYNC semantics were implemented, but using

* the O_SYNC flag. We continue to use the existing numerical value

* for O_DSYNC semantics now, but using the correct symbolic name for it.

* This new value is used to request true Posix O_SYNC semantics. It is

* defined in this strange way to make sure applications compiled against

* new headers get at least O_DSYNC semantics on older kernels.

* This has the nice side-effect that we can simply test for O_DSYNC

* wherever we do not care if O_DSYNC or O_SYNC is used.

* Note: __O_SYNC must never be used directly.

#ifndef O_SYNC

#define __O_SYNC 04000000

#define O_SYNC (__O_SYNC|O_DSYNC)

#endif

#ifndef O_PATH

#define O_PATH 010000000

#endif

#ifndef __O_TMPFILE

#define __O_TMPFILE 020000000

#endif

/* a horrid kludge trying to make sure that this will fail on old kernels */

#define O_TMPFILE (__O_TMPFILE | O_DIRECTORY)

#define O_TMPFILE_MASK (__O_TMPFILE | O_DIRECTORY | O_CREAT)

#ifndef O_NDELAY

#define O_NDELAY O_NONBLOCK

#endif

#define F_DUPFD 0 /* dup */

#define F_GETFD 1 /* get close_on_exec */

#define F_SETFD 2 /* set/clear close_on_exec */

#define F_GETFL 3 /* get file->f_flags */

#define F_SETFL 4 /* set file->f_flags */

#ifndef F_GETLK

#define F_GETLK 5

#define F_SETLK 6

#define F_SETLKW 7

#endif

#ifndef F_SETOWN

#define F_SETOWN 8 /* for sockets. */

#define F_GETOWN 9 /* for sockets. */

#endif

#ifndef F_SETSIG

#define F_SETSIG 10 /* for sockets. */

#define F_GETSIG 11 /* for sockets. */

#endif

#ifndef CONFIG_64BIT

#ifndef F_GETLK64

#define F_GETLK64 12 /* using 'struct flock64' */

#define F_SETLK64 13

#define F_SETLKW64 14

#endif

#ifndef F_SETOWN_EX

#define F_SETOWN_EX 15

#define F_GETOWN_EX 16

#endif

#ifndef F_GETOWNER_UIDS

#define F_GETOWNER_UIDS 17

#endif

* Open File Description Locks

* Usually record locks held by a process are released on *any* close and are

* not inherited across a fork().

* These cmd values will set locks that conflict with process-associated

* record locks, but are "owned" by the open file description, not the

* process. This means that they are inherited across fork() like BSD (flock)

* locks, and they are only released automatically when the last reference to

* the the open file against which they were acquired is put.

#define F_OFD_GETLK 36

#define F_OFD_SETLK 37

#define F_OFD_SETLKW 38

#define F_OWNER_TID 0

#define F_OWNER_PID 1

#define F_OWNER_PGRP 2

struct f_owner_ex {

int type;

__kernel_pid_t pid;

};

/* for F_[GET|SET]FL */

#define FD_CLOEXEC 1 /* actually anything with low bit set goes */

/* for posix fcntl() and lockf() */

#ifndef F_RDLCK

#define F_RDLCK 0

#define F_WRLCK 1

#define F_UNLCK 2

#endif

/* for old implementation of bsd flock () */

#ifndef F_EXLCK

#define F_EXLCK 4 /* or 3 */

#define F_SHLCK 8 /* or 4 */

#endif

/* operations for bsd flock(), also used by the kernel implementation */

#define LOCK_SH 1 /* shared lock */

#define LOCK_EX 2 /* exclusive lock */

#define LOCK_NB 4 /* or'd with one of the above to prevent

blocking */

#define LOCK_UN 8 /* remove lock */

#define LOCK_MAND 32 /* This is a mandatory flock ... */

#define LOCK_READ 64 /* which allows concurrent read operations */

#define LOCK_WRITE 128 /* which allows concurrent write operations */

#define LOCK_RW 192 /* which allows concurrent read & write ops */

#define F_LINUX_SPECIFIC_BASE 1024

#ifndef HAVE_ARCH_STRUCT_FLOCK

#ifndef __ARCH_FLOCK_PAD

#define __ARCH_FLOCK_PAD

#endif

struct flock {

short l_type;

short l_whence;

__kernel_off_t l_start;

__kernel_off_t l_len;

__kernel_pid_t l_pid;

__ARCH_FLOCK_PAD

};

#endif

#ifndef HAVE_ARCH_STRUCT_FLOCK64

#ifndef __ARCH_FLOCK64_PAD

#define __ARCH_FLOCK64_PAD

#endif

struct flock64 {

short l_type;

short l_whence;

__kernel_loff_t l_start;

__kernel_loff_t l_len;

__kernel_pid_t l_pid;

__ARCH_FLOCK64_PAD

};

#endif

#endif /* _ASM_GENERIC_FCNTL_H */

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