Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20210603191541.2862286-1-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
971 lines
22 KiB
C
971 lines
22 KiB
C
/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
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/*
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This file defines the kernel interface of FUSE
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Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
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This program can be distributed under the terms of the GNU GPL.
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See the file COPYING.
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This -- and only this -- header file may also be distributed under
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the terms of the BSD Licence as follows:
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Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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/*
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* This file defines the kernel interface of FUSE
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*
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* Protocol changelog:
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*
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* 7.1:
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* - add the following messages:
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* FUSE_SETATTR, FUSE_SYMLINK, FUSE_MKNOD, FUSE_MKDIR, FUSE_UNLINK,
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* FUSE_RMDIR, FUSE_RENAME, FUSE_LINK, FUSE_OPEN, FUSE_READ, FUSE_WRITE,
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* FUSE_RELEASE, FUSE_FSYNC, FUSE_FLUSH, FUSE_SETXATTR, FUSE_GETXATTR,
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* FUSE_LISTXATTR, FUSE_REMOVEXATTR, FUSE_OPENDIR, FUSE_READDIR,
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* FUSE_RELEASEDIR
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* - add padding to messages to accommodate 32-bit servers on 64-bit kernels
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*
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* 7.2:
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* - add FOPEN_DIRECT_IO and FOPEN_KEEP_CACHE flags
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* - add FUSE_FSYNCDIR message
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*
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* 7.3:
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* - add FUSE_ACCESS message
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* - add FUSE_CREATE message
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* - add filehandle to fuse_setattr_in
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*
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* 7.4:
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* - add frsize to fuse_kstatfs
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* - clean up request size limit checking
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*
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* 7.5:
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* - add flags and max_write to fuse_init_out
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*
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* 7.6:
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* - add max_readahead to fuse_init_in and fuse_init_out
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*
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* 7.7:
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* - add FUSE_INTERRUPT message
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* - add POSIX file lock support
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*
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* 7.8:
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* - add lock_owner and flags fields to fuse_release_in
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* - add FUSE_BMAP message
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* - add FUSE_DESTROY message
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*
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* 7.9:
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* - new fuse_getattr_in input argument of GETATTR
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* - add lk_flags in fuse_lk_in
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* - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
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* - add blksize field to fuse_attr
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* - add file flags field to fuse_read_in and fuse_write_in
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* - Add ATIME_NOW and MTIME_NOW flags to fuse_setattr_in
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*
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* 7.10
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* - add nonseekable open flag
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*
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* 7.11
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* - add IOCTL message
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* - add unsolicited notification support
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* - add POLL message and NOTIFY_POLL notification
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*
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* 7.12
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* - add umask flag to input argument of create, mknod and mkdir
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* - add notification messages for invalidation of inodes and
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* directory entries
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*
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* 7.13
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* - make max number of background requests and congestion threshold
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* tunables
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*
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* 7.14
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* - add splice support to fuse device
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*
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* 7.15
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* - add store notify
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* - add retrieve notify
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*
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* 7.16
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* - add BATCH_FORGET request
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* - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct
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* fuse_ioctl_iovec' instead of ambiguous 'struct iovec'
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* - add FUSE_IOCTL_32BIT flag
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*
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* 7.17
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* - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK
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*
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* 7.18
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* - add FUSE_IOCTL_DIR flag
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* - add FUSE_NOTIFY_DELETE
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*
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* 7.19
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* - add FUSE_FALLOCATE
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*
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* 7.20
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* - add FUSE_AUTO_INVAL_DATA
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*
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* 7.21
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* - add FUSE_READDIRPLUS
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* - send the requested events in POLL request
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*
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* 7.22
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* - add FUSE_ASYNC_DIO
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*
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* 7.23
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* - add FUSE_WRITEBACK_CACHE
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* - add time_gran to fuse_init_out
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* - add reserved space to fuse_init_out
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* - add FATTR_CTIME
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* - add ctime and ctimensec to fuse_setattr_in
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* - add FUSE_RENAME2 request
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* - add FUSE_NO_OPEN_SUPPORT flag
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*
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* 7.24
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* - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support
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*
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* 7.25
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* - add FUSE_PARALLEL_DIROPS
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*
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* 7.26
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* - add FUSE_HANDLE_KILLPRIV
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* - add FUSE_POSIX_ACL
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*
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* 7.27
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* - add FUSE_ABORT_ERROR
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*
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* 7.28
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* - add FUSE_COPY_FILE_RANGE
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* - add FOPEN_CACHE_DIR
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* - add FUSE_MAX_PAGES, add max_pages to init_out
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* - add FUSE_CACHE_SYMLINKS
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*
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* 7.29
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* - add FUSE_NO_OPENDIR_SUPPORT flag
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*
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* 7.30
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* - add FUSE_EXPLICIT_INVAL_DATA
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* - add FUSE_IOCTL_COMPAT_X32
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*
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* 7.31
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* - add FUSE_WRITE_KILL_PRIV flag
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* - add FUSE_SETUPMAPPING and FUSE_REMOVEMAPPING
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* - add map_alignment to fuse_init_out, add FUSE_MAP_ALIGNMENT flag
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*
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* 7.32
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* - add flags to fuse_attr, add FUSE_ATTR_SUBMOUNT, add FUSE_SUBMOUNTS
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*
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* 7.33
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* - add FUSE_HANDLE_KILLPRIV_V2, FUSE_WRITE_KILL_SUIDGID, FATTR_KILL_SUIDGID
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* - add FUSE_OPEN_KILL_SUIDGID
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* - extend fuse_setxattr_in, add FUSE_SETXATTR_EXT
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* - add FUSE_SETXATTR_ACL_KILL_SGID
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*/
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#ifndef _LINUX_FUSE_H
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#define _LINUX_FUSE_H
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#include <stdint.h>
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/*
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* Version negotiation:
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*
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* Both the kernel and userspace send the version they support in the
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* INIT request and reply respectively.
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*
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* If the major versions match then both shall use the smallest
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* of the two minor versions for communication.
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*
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* If the kernel supports a larger major version, then userspace shall
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* reply with the major version it supports, ignore the rest of the
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* INIT message and expect a new INIT message from the kernel with a
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* matching major version.
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*
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* If the library supports a larger major version, then it shall fall
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* back to the major protocol version sent by the kernel for
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* communication and reply with that major version (and an arbitrary
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* supported minor version).
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*/
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/** Version number of this interface */
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#define FUSE_KERNEL_VERSION 7
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/** Minor version number of this interface */
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#define FUSE_KERNEL_MINOR_VERSION 33
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/** The node ID of the root inode */
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#define FUSE_ROOT_ID 1
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/* Make sure all structures are padded to 64bit boundary, so 32bit
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userspace works under 64bit kernels */
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struct fuse_attr {
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uint64_t ino;
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uint64_t size;
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uint64_t blocks;
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uint64_t atime;
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uint64_t mtime;
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uint64_t ctime;
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uint32_t atimensec;
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uint32_t mtimensec;
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uint32_t ctimensec;
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uint32_t mode;
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uint32_t nlink;
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uint32_t uid;
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uint32_t gid;
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uint32_t rdev;
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uint32_t blksize;
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uint32_t flags;
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};
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struct fuse_kstatfs {
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uint64_t blocks;
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uint64_t bfree;
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uint64_t bavail;
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uint64_t files;
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uint64_t ffree;
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uint32_t bsize;
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uint32_t namelen;
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uint32_t frsize;
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uint32_t padding;
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uint32_t spare[6];
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};
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struct fuse_file_lock {
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uint64_t start;
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uint64_t end;
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uint32_t type;
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uint32_t pid; /* tgid */
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};
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/**
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* Bitmasks for fuse_setattr_in.valid
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*/
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#define FATTR_MODE (1 << 0)
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#define FATTR_UID (1 << 1)
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#define FATTR_GID (1 << 2)
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#define FATTR_SIZE (1 << 3)
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#define FATTR_ATIME (1 << 4)
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#define FATTR_MTIME (1 << 5)
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#define FATTR_FH (1 << 6)
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#define FATTR_ATIME_NOW (1 << 7)
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#define FATTR_MTIME_NOW (1 << 8)
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#define FATTR_LOCKOWNER (1 << 9)
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#define FATTR_CTIME (1 << 10)
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#define FATTR_KILL_SUIDGID (1 << 11)
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/**
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* Flags returned by the OPEN request
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*
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* FOPEN_DIRECT_IO: bypass page cache for this open file
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* FOPEN_KEEP_CACHE: don't invalidate the data cache on open
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* FOPEN_NONSEEKABLE: the file is not seekable
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* FOPEN_CACHE_DIR: allow caching this directory
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* FOPEN_STREAM: the file is stream-like (no file position at all)
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*/
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#define FOPEN_DIRECT_IO (1 << 0)
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#define FOPEN_KEEP_CACHE (1 << 1)
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#define FOPEN_NONSEEKABLE (1 << 2)
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#define FOPEN_CACHE_DIR (1 << 3)
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#define FOPEN_STREAM (1 << 4)
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/**
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* INIT request/reply flags
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*
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* FUSE_ASYNC_READ: asynchronous read requests
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* FUSE_POSIX_LOCKS: remote locking for POSIX file locks
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* FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported)
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* FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem
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* FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
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* FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB
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* FUSE_DONT_MASK: don't apply umask to file mode on create operations
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* FUSE_SPLICE_WRITE: kernel supports splice write on the device
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* FUSE_SPLICE_MOVE: kernel supports splice move on the device
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* FUSE_SPLICE_READ: kernel supports splice read on the device
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* FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
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* FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories
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* FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages
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* FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one)
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* FUSE_READDIRPLUS_AUTO: adaptive readdirplus
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* FUSE_ASYNC_DIO: asynchronous direct I/O submission
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* FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes
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* FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens
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* FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir
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* FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc
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* FUSE_POSIX_ACL: filesystem supports posix acls
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* FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED
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* FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages
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* FUSE_CACHE_SYMLINKS: cache READLINK responses
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* FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir
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* FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request
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* FUSE_MAP_ALIGNMENT: init_out.map_alignment contains log2(byte alignment) for
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* foffset and moffset fields in struct
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* fuse_setupmapping_out and fuse_removemapping_one.
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* FUSE_SUBMOUNTS: kernel supports auto-mounting directory submounts
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* FUSE_HANDLE_KILLPRIV_V2: fs kills suid/sgid/cap on write/chown/trunc.
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* Upon write/truncate suid/sgid is only killed if caller
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* does not have CAP_FSETID. Additionally upon
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* write/truncate sgid is killed only if file has group
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* execute permission. (Same as Linux VFS behavior).
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* FUSE_SETXATTR_EXT: Server supports extended struct fuse_setxattr_in
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*/
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#define FUSE_ASYNC_READ (1 << 0)
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#define FUSE_POSIX_LOCKS (1 << 1)
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#define FUSE_FILE_OPS (1 << 2)
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#define FUSE_ATOMIC_O_TRUNC (1 << 3)
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#define FUSE_EXPORT_SUPPORT (1 << 4)
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#define FUSE_BIG_WRITES (1 << 5)
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#define FUSE_DONT_MASK (1 << 6)
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#define FUSE_SPLICE_WRITE (1 << 7)
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#define FUSE_SPLICE_MOVE (1 << 8)
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#define FUSE_SPLICE_READ (1 << 9)
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#define FUSE_FLOCK_LOCKS (1 << 10)
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#define FUSE_HAS_IOCTL_DIR (1 << 11)
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#define FUSE_AUTO_INVAL_DATA (1 << 12)
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#define FUSE_DO_READDIRPLUS (1 << 13)
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#define FUSE_READDIRPLUS_AUTO (1 << 14)
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#define FUSE_ASYNC_DIO (1 << 15)
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#define FUSE_WRITEBACK_CACHE (1 << 16)
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#define FUSE_NO_OPEN_SUPPORT (1 << 17)
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#define FUSE_PARALLEL_DIROPS (1 << 18)
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#define FUSE_HANDLE_KILLPRIV (1 << 19)
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#define FUSE_POSIX_ACL (1 << 20)
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#define FUSE_ABORT_ERROR (1 << 21)
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#define FUSE_MAX_PAGES (1 << 22)
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#define FUSE_CACHE_SYMLINKS (1 << 23)
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#define FUSE_NO_OPENDIR_SUPPORT (1 << 24)
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#define FUSE_EXPLICIT_INVAL_DATA (1 << 25)
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#define FUSE_MAP_ALIGNMENT (1 << 26)
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#define FUSE_SUBMOUNTS (1 << 27)
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#define FUSE_HANDLE_KILLPRIV_V2 (1 << 28)
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#define FUSE_SETXATTR_EXT (1 << 29)
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/**
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* CUSE INIT request/reply flags
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*
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* CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl
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*/
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#define CUSE_UNRESTRICTED_IOCTL (1 << 0)
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/**
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* Release flags
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*/
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#define FUSE_RELEASE_FLUSH (1 << 0)
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#define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1)
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/**
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* Getattr flags
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*/
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#define FUSE_GETATTR_FH (1 << 0)
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/**
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* Lock flags
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*/
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#define FUSE_LK_FLOCK (1 << 0)
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/**
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* WRITE flags
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*
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* FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
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* FUSE_WRITE_LOCKOWNER: lock_owner field is valid
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* FUSE_WRITE_KILL_SUIDGID: kill suid and sgid bits
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*/
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#define FUSE_WRITE_CACHE (1 << 0)
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#define FUSE_WRITE_LOCKOWNER (1 << 1)
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#define FUSE_WRITE_KILL_SUIDGID (1 << 2)
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/* Obsolete alias; this flag implies killing suid/sgid only. */
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#define FUSE_WRITE_KILL_PRIV FUSE_WRITE_KILL_SUIDGID
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/**
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* Read flags
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*/
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#define FUSE_READ_LOCKOWNER (1 << 1)
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/**
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* Ioctl flags
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*
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* FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
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* FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
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* FUSE_IOCTL_RETRY: retry with new iovecs
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* FUSE_IOCTL_32BIT: 32bit ioctl
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* FUSE_IOCTL_DIR: is a directory
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* FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t)
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*
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* FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
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*/
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#define FUSE_IOCTL_COMPAT (1 << 0)
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#define FUSE_IOCTL_UNRESTRICTED (1 << 1)
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#define FUSE_IOCTL_RETRY (1 << 2)
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#define FUSE_IOCTL_32BIT (1 << 3)
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#define FUSE_IOCTL_DIR (1 << 4)
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#define FUSE_IOCTL_COMPAT_X32 (1 << 5)
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#define FUSE_IOCTL_MAX_IOV 256
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/**
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* Poll flags
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*
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* FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
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*/
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#define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)
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/**
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* Fsync flags
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*
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* FUSE_FSYNC_FDATASYNC: Sync data only, not metadata
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*/
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#define FUSE_FSYNC_FDATASYNC (1 << 0)
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/**
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* fuse_attr flags
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*
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* FUSE_ATTR_SUBMOUNT: Object is a submount root
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*/
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#define FUSE_ATTR_SUBMOUNT (1 << 0)
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/**
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* Open flags
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* FUSE_OPEN_KILL_SUIDGID: Kill suid and sgid if executable
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*/
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#define FUSE_OPEN_KILL_SUIDGID (1 << 0)
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/**
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* setxattr flags
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* FUSE_SETXATTR_ACL_KILL_SGID: Clear SGID when system.posix_acl_access is set
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*/
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#define FUSE_SETXATTR_ACL_KILL_SGID (1 << 0)
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enum fuse_opcode {
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FUSE_LOOKUP = 1,
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FUSE_FORGET = 2, /* no reply */
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FUSE_GETATTR = 3,
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FUSE_SETATTR = 4,
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FUSE_READLINK = 5,
|
|
FUSE_SYMLINK = 6,
|
|
FUSE_MKNOD = 8,
|
|
FUSE_MKDIR = 9,
|
|
FUSE_UNLINK = 10,
|
|
FUSE_RMDIR = 11,
|
|
FUSE_RENAME = 12,
|
|
FUSE_LINK = 13,
|
|
FUSE_OPEN = 14,
|
|
FUSE_READ = 15,
|
|
FUSE_WRITE = 16,
|
|
FUSE_STATFS = 17,
|
|
FUSE_RELEASE = 18,
|
|
FUSE_FSYNC = 20,
|
|
FUSE_SETXATTR = 21,
|
|
FUSE_GETXATTR = 22,
|
|
FUSE_LISTXATTR = 23,
|
|
FUSE_REMOVEXATTR = 24,
|
|
FUSE_FLUSH = 25,
|
|
FUSE_INIT = 26,
|
|
FUSE_OPENDIR = 27,
|
|
FUSE_READDIR = 28,
|
|
FUSE_RELEASEDIR = 29,
|
|
FUSE_FSYNCDIR = 30,
|
|
FUSE_GETLK = 31,
|
|
FUSE_SETLK = 32,
|
|
FUSE_SETLKW = 33,
|
|
FUSE_ACCESS = 34,
|
|
FUSE_CREATE = 35,
|
|
FUSE_INTERRUPT = 36,
|
|
FUSE_BMAP = 37,
|
|
FUSE_DESTROY = 38,
|
|
FUSE_IOCTL = 39,
|
|
FUSE_POLL = 40,
|
|
FUSE_NOTIFY_REPLY = 41,
|
|
FUSE_BATCH_FORGET = 42,
|
|
FUSE_FALLOCATE = 43,
|
|
FUSE_READDIRPLUS = 44,
|
|
FUSE_RENAME2 = 45,
|
|
FUSE_LSEEK = 46,
|
|
FUSE_COPY_FILE_RANGE = 47,
|
|
FUSE_SETUPMAPPING = 48,
|
|
FUSE_REMOVEMAPPING = 49,
|
|
|
|
/* CUSE specific operations */
|
|
CUSE_INIT = 4096,
|
|
|
|
/* Reserved opcodes: helpful to detect structure endian-ness */
|
|
CUSE_INIT_BSWAP_RESERVED = 1048576, /* CUSE_INIT << 8 */
|
|
FUSE_INIT_BSWAP_RESERVED = 436207616, /* FUSE_INIT << 24 */
|
|
};
|
|
|
|
enum fuse_notify_code {
|
|
FUSE_NOTIFY_POLL = 1,
|
|
FUSE_NOTIFY_INVAL_INODE = 2,
|
|
FUSE_NOTIFY_INVAL_ENTRY = 3,
|
|
FUSE_NOTIFY_STORE = 4,
|
|
FUSE_NOTIFY_RETRIEVE = 5,
|
|
FUSE_NOTIFY_DELETE = 6,
|
|
FUSE_NOTIFY_CODE_MAX,
|
|
};
|
|
|
|
/* The read buffer is required to be at least 8k, but may be much larger */
|
|
#define FUSE_MIN_READ_BUFFER 8192
|
|
|
|
#define FUSE_COMPAT_ENTRY_OUT_SIZE 120
|
|
|
|
struct fuse_entry_out {
|
|
uint64_t nodeid; /* Inode ID */
|
|
uint64_t generation; /* Inode generation: nodeid:gen must
|
|
be unique for the fs's lifetime */
|
|
uint64_t entry_valid; /* Cache timeout for the name */
|
|
uint64_t attr_valid; /* Cache timeout for the attributes */
|
|
uint32_t entry_valid_nsec;
|
|
uint32_t attr_valid_nsec;
|
|
struct fuse_attr attr;
|
|
};
|
|
|
|
struct fuse_forget_in {
|
|
uint64_t nlookup;
|
|
};
|
|
|
|
struct fuse_forget_one {
|
|
uint64_t nodeid;
|
|
uint64_t nlookup;
|
|
};
|
|
|
|
struct fuse_batch_forget_in {
|
|
uint32_t count;
|
|
uint32_t dummy;
|
|
};
|
|
|
|
struct fuse_getattr_in {
|
|
uint32_t getattr_flags;
|
|
uint32_t dummy;
|
|
uint64_t fh;
|
|
};
|
|
|
|
#define FUSE_COMPAT_ATTR_OUT_SIZE 96
|
|
|
|
struct fuse_attr_out {
|
|
uint64_t attr_valid; /* Cache timeout for the attributes */
|
|
uint32_t attr_valid_nsec;
|
|
uint32_t dummy;
|
|
struct fuse_attr attr;
|
|
};
|
|
|
|
#define FUSE_COMPAT_MKNOD_IN_SIZE 8
|
|
|
|
struct fuse_mknod_in {
|
|
uint32_t mode;
|
|
uint32_t rdev;
|
|
uint32_t umask;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_mkdir_in {
|
|
uint32_t mode;
|
|
uint32_t umask;
|
|
};
|
|
|
|
struct fuse_rename_in {
|
|
uint64_t newdir;
|
|
};
|
|
|
|
struct fuse_rename2_in {
|
|
uint64_t newdir;
|
|
uint32_t flags;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_link_in {
|
|
uint64_t oldnodeid;
|
|
};
|
|
|
|
struct fuse_setattr_in {
|
|
uint32_t valid;
|
|
uint32_t padding;
|
|
uint64_t fh;
|
|
uint64_t size;
|
|
uint64_t lock_owner;
|
|
uint64_t atime;
|
|
uint64_t mtime;
|
|
uint64_t ctime;
|
|
uint32_t atimensec;
|
|
uint32_t mtimensec;
|
|
uint32_t ctimensec;
|
|
uint32_t mode;
|
|
uint32_t unused4;
|
|
uint32_t uid;
|
|
uint32_t gid;
|
|
uint32_t unused5;
|
|
};
|
|
|
|
struct fuse_open_in {
|
|
uint32_t flags;
|
|
uint32_t open_flags; /* FUSE_OPEN_... */
|
|
};
|
|
|
|
struct fuse_create_in {
|
|
uint32_t flags;
|
|
uint32_t mode;
|
|
uint32_t umask;
|
|
uint32_t open_flags; /* FUSE_OPEN_... */
|
|
};
|
|
|
|
struct fuse_open_out {
|
|
uint64_t fh;
|
|
uint32_t open_flags;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_release_in {
|
|
uint64_t fh;
|
|
uint32_t flags;
|
|
uint32_t release_flags;
|
|
uint64_t lock_owner;
|
|
};
|
|
|
|
struct fuse_flush_in {
|
|
uint64_t fh;
|
|
uint32_t unused;
|
|
uint32_t padding;
|
|
uint64_t lock_owner;
|
|
};
|
|
|
|
struct fuse_read_in {
|
|
uint64_t fh;
|
|
uint64_t offset;
|
|
uint32_t size;
|
|
uint32_t read_flags;
|
|
uint64_t lock_owner;
|
|
uint32_t flags;
|
|
uint32_t padding;
|
|
};
|
|
|
|
#define FUSE_COMPAT_WRITE_IN_SIZE 24
|
|
|
|
struct fuse_write_in {
|
|
uint64_t fh;
|
|
uint64_t offset;
|
|
uint32_t size;
|
|
uint32_t write_flags;
|
|
uint64_t lock_owner;
|
|
uint32_t flags;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_write_out {
|
|
uint32_t size;
|
|
uint32_t padding;
|
|
};
|
|
|
|
#define FUSE_COMPAT_STATFS_SIZE 48
|
|
|
|
struct fuse_statfs_out {
|
|
struct fuse_kstatfs st;
|
|
};
|
|
|
|
struct fuse_fsync_in {
|
|
uint64_t fh;
|
|
uint32_t fsync_flags;
|
|
uint32_t padding;
|
|
};
|
|
|
|
#define FUSE_COMPAT_SETXATTR_IN_SIZE 8
|
|
|
|
struct fuse_setxattr_in {
|
|
uint32_t size;
|
|
uint32_t flags;
|
|
uint32_t setxattr_flags;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_getxattr_in {
|
|
uint32_t size;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_getxattr_out {
|
|
uint32_t size;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_lk_in {
|
|
uint64_t fh;
|
|
uint64_t owner;
|
|
struct fuse_file_lock lk;
|
|
uint32_t lk_flags;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_lk_out {
|
|
struct fuse_file_lock lk;
|
|
};
|
|
|
|
struct fuse_access_in {
|
|
uint32_t mask;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_init_in {
|
|
uint32_t major;
|
|
uint32_t minor;
|
|
uint32_t max_readahead;
|
|
uint32_t flags;
|
|
};
|
|
|
|
#define FUSE_COMPAT_INIT_OUT_SIZE 8
|
|
#define FUSE_COMPAT_22_INIT_OUT_SIZE 24
|
|
|
|
struct fuse_init_out {
|
|
uint32_t major;
|
|
uint32_t minor;
|
|
uint32_t max_readahead;
|
|
uint32_t flags;
|
|
uint16_t max_background;
|
|
uint16_t congestion_threshold;
|
|
uint32_t max_write;
|
|
uint32_t time_gran;
|
|
uint16_t max_pages;
|
|
uint16_t map_alignment;
|
|
uint32_t unused[8];
|
|
};
|
|
|
|
#define CUSE_INIT_INFO_MAX 4096
|
|
|
|
struct cuse_init_in {
|
|
uint32_t major;
|
|
uint32_t minor;
|
|
uint32_t unused;
|
|
uint32_t flags;
|
|
};
|
|
|
|
struct cuse_init_out {
|
|
uint32_t major;
|
|
uint32_t minor;
|
|
uint32_t unused;
|
|
uint32_t flags;
|
|
uint32_t max_read;
|
|
uint32_t max_write;
|
|
uint32_t dev_major; /* chardev major */
|
|
uint32_t dev_minor; /* chardev minor */
|
|
uint32_t spare[10];
|
|
};
|
|
|
|
struct fuse_interrupt_in {
|
|
uint64_t unique;
|
|
};
|
|
|
|
struct fuse_bmap_in {
|
|
uint64_t block;
|
|
uint32_t blocksize;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_bmap_out {
|
|
uint64_t block;
|
|
};
|
|
|
|
struct fuse_ioctl_in {
|
|
uint64_t fh;
|
|
uint32_t flags;
|
|
uint32_t cmd;
|
|
uint64_t arg;
|
|
uint32_t in_size;
|
|
uint32_t out_size;
|
|
};
|
|
|
|
struct fuse_ioctl_iovec {
|
|
uint64_t base;
|
|
uint64_t len;
|
|
};
|
|
|
|
struct fuse_ioctl_out {
|
|
int32_t result;
|
|
uint32_t flags;
|
|
uint32_t in_iovs;
|
|
uint32_t out_iovs;
|
|
};
|
|
|
|
struct fuse_poll_in {
|
|
uint64_t fh;
|
|
uint64_t kh;
|
|
uint32_t flags;
|
|
uint32_t events;
|
|
};
|
|
|
|
struct fuse_poll_out {
|
|
uint32_t revents;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_notify_poll_wakeup_out {
|
|
uint64_t kh;
|
|
};
|
|
|
|
struct fuse_fallocate_in {
|
|
uint64_t fh;
|
|
uint64_t offset;
|
|
uint64_t length;
|
|
uint32_t mode;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_in_header {
|
|
uint32_t len;
|
|
uint32_t opcode;
|
|
uint64_t unique;
|
|
uint64_t nodeid;
|
|
uint32_t uid;
|
|
uint32_t gid;
|
|
uint32_t pid;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_out_header {
|
|
uint32_t len;
|
|
int32_t error;
|
|
uint64_t unique;
|
|
};
|
|
|
|
struct fuse_dirent {
|
|
uint64_t ino;
|
|
uint64_t off;
|
|
uint32_t namelen;
|
|
uint32_t type;
|
|
char name[];
|
|
};
|
|
|
|
#define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
|
|
#define FUSE_DIRENT_ALIGN(x) \
|
|
(((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))
|
|
#define FUSE_DIRENT_SIZE(d) \
|
|
FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)
|
|
|
|
struct fuse_direntplus {
|
|
struct fuse_entry_out entry_out;
|
|
struct fuse_dirent dirent;
|
|
};
|
|
|
|
#define FUSE_NAME_OFFSET_DIRENTPLUS \
|
|
offsetof(struct fuse_direntplus, dirent.name)
|
|
#define FUSE_DIRENTPLUS_SIZE(d) \
|
|
FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen)
|
|
|
|
struct fuse_notify_inval_inode_out {
|
|
uint64_t ino;
|
|
int64_t off;
|
|
int64_t len;
|
|
};
|
|
|
|
struct fuse_notify_inval_entry_out {
|
|
uint64_t parent;
|
|
uint32_t namelen;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_notify_delete_out {
|
|
uint64_t parent;
|
|
uint64_t child;
|
|
uint32_t namelen;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_notify_store_out {
|
|
uint64_t nodeid;
|
|
uint64_t offset;
|
|
uint32_t size;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_notify_retrieve_out {
|
|
uint64_t notify_unique;
|
|
uint64_t nodeid;
|
|
uint64_t offset;
|
|
uint32_t size;
|
|
uint32_t padding;
|
|
};
|
|
|
|
/* Matches the size of fuse_write_in */
|
|
struct fuse_notify_retrieve_in {
|
|
uint64_t dummy1;
|
|
uint64_t offset;
|
|
uint32_t size;
|
|
uint32_t dummy2;
|
|
uint64_t dummy3;
|
|
uint64_t dummy4;
|
|
};
|
|
|
|
/* Device ioctls: */
|
|
#define FUSE_DEV_IOC_MAGIC 229
|
|
#define FUSE_DEV_IOC_CLONE _IOR(FUSE_DEV_IOC_MAGIC, 0, uint32_t)
|
|
|
|
struct fuse_lseek_in {
|
|
uint64_t fh;
|
|
uint64_t offset;
|
|
uint32_t whence;
|
|
uint32_t padding;
|
|
};
|
|
|
|
struct fuse_lseek_out {
|
|
uint64_t offset;
|
|
};
|
|
|
|
struct fuse_copy_file_range_in {
|
|
uint64_t fh_in;
|
|
uint64_t off_in;
|
|
uint64_t nodeid_out;
|
|
uint64_t fh_out;
|
|
uint64_t off_out;
|
|
uint64_t len;
|
|
uint64_t flags;
|
|
};
|
|
|
|
#define FUSE_SETUPMAPPING_FLAG_WRITE (1ull << 0)
|
|
#define FUSE_SETUPMAPPING_FLAG_READ (1ull << 1)
|
|
struct fuse_setupmapping_in {
|
|
/* An already open handle */
|
|
uint64_t fh;
|
|
/* Offset into the file to start the mapping */
|
|
uint64_t foffset;
|
|
/* Length of mapping required */
|
|
uint64_t len;
|
|
/* Flags, FUSE_SETUPMAPPING_FLAG_* */
|
|
uint64_t flags;
|
|
/* Offset in Memory Window */
|
|
uint64_t moffset;
|
|
};
|
|
|
|
struct fuse_removemapping_in {
|
|
/* number of fuse_removemapping_one follows */
|
|
uint32_t count;
|
|
};
|
|
|
|
struct fuse_removemapping_one {
|
|
/* Offset into the dax window start the unmapping */
|
|
uint64_t moffset;
|
|
/* Length of mapping required */
|
|
uint64_t len;
|
|
};
|
|
|
|
#define FUSE_REMOVEMAPPING_MAX_ENTRY \
|
|
(PAGE_SIZE / sizeof(struct fuse_removemapping_one))
|
|
|
|
#endif /* _LINUX_FUSE_H */
|