FM / linux

/usr/include/linux

Name	Size	Mode	Actions
android/	-	0755	rm
byteorder/	-	0755	rm
caif/	-	0755	rm
can/	-	0755	rm
cifs/	-	0755	rm
dvb/	-	0755	rm
genwqe/	-	0755	rm
hdlc/	-	0755	rm
hsi/	-	0755	rm
iio/	-	0755	rm
isdn/	-	0755	rm
misc/	-	0755	rm
mmc/	-	0755	rm
netfilter/	-	0755	rm
netfilter_arp/	-	0755	rm
netfilter_bridge/	-	0755	rm
netfilter_ipv4/	-	0755	rm
netfilter_ipv6/	-	0755	rm
nfsd/	-	0755	rm
raid/	-	0755	rm
sched/	-	0755	rm
spi/	-	0755	rm
sunrpc/	-	0755	rm
surface_aggregator/	-	0755	rm
tc_act/	-	0755	rm
tc_ematch/	-	0755	rm
usb/	-	0755	rm
a.out.h	6892	0644	edit dl rm
acct.h	3913	0644	edit dl rm
acrn.h	16686	0644	edit dl rm
adb.h	1140	0644	edit dl rm
adfs_fs.h	993	0644	edit dl rm
affs_hardblocks.h	1578	0644	edit dl rm
agpgart.h	3940	0644	edit dl rm
aio_abi.h	3398	0644	edit dl rm
am437x-vpfe.h	3681	0644	edit dl rm
apm_bios.h	3683	0644	edit dl rm
arcfb.h	213	0644	edit dl rm
arm_sdei.h	2751	0644	edit dl rm
aspeed-lpc-ctrl.h	1780	0644	edit dl rm
aspeed-p2a-ctrl.h	1906	0644	edit dl rm
atalk.h	1023	0644	edit dl rm
atm.h	7888	0644	edit dl rm
atmapi.h	952	0644	edit dl rm
atmarp.h	1296	0644	edit dl rm
atmbr2684.h	3271	0644	edit dl rm
atmclip.h	576	0644	edit dl rm
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atmlec.h	2381	0644	edit dl rm
atmmpc.h	4226	0644	edit dl rm
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atmsvc.h	1853	0644	edit dl rm
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atm_he.h	406	0644	edit dl rm
atm_idt77105.h	955	0644	edit dl rm
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atm_tcp.h	1622	0644	edit dl rm
atm_zatm.h	1540	0644	edit dl rm
audit.h	21570	0644	edit dl rm
auto_dev-ioctl.h	4986	0644	edit dl rm
auto_fs.h	6428	0644	edit dl rm
auto_fs4.h	451	0644	edit dl rm
auxvec.h	1597	0644	edit dl rm
ax25.h	2824	0644	edit dl rm
batadv_packet.h	20345	0644	edit dl rm
batman_adv.h	16887	0644	edit dl rm
baycom.h	883	0644	edit dl rm
bcm933xx_hcs.h	419	0644	edit dl rm
bfs_fs.h	1905	0644	edit dl rm
binfmts.h	776	0644	edit dl rm
bits.h	447	0644	edit dl rm
blkpg.h	904	0644	edit dl rm
blktrace_api.h	4701	0644	edit dl rm
blkzoned.h	6493	0644	edit dl rm
bpf.h	278639	0644	edit dl rm
bpfilter.h	465	0644	edit dl rm
bpf_common.h	1367	0644	edit dl rm
bpf_perf_event.h	529	0644	edit dl rm
bpqether.h	981	0644	edit dl rm
bsg.h	2494	0644	edit dl rm
bt-bmc.h	572	0644	edit dl rm
btf.h	5591	0644	edit dl rm
btrfs.h	30570	0644	edit dl rm
btrfs_tree.h	25829	0644	edit dl rm
cachefiles.h	1650	0644	edit dl rm
can.h	11496	0644	edit dl rm
capability.h	13491	0644	edit dl rm
capi.h	3124	0644	edit dl rm
cciss_defs.h	3281	0644	edit dl rm
cciss_ioctl.h	2761	0644	edit dl rm
ccs.h	767	0644	edit dl rm
cdrom.h	29561	0644	edit dl rm
cec-funcs.h	54419	0644	edit dl rm
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cfm_bridge.h	1456	0644	edit dl rm
cgroupstats.h	2219	0644	edit dl rm
chio.h	5282	0644	edit dl rm
close_range.h	377	0644	edit dl rm
cm4000_cs.h	1806	0644	edit dl rm
cn_proc.h	4149	0644	edit dl rm
coda.h	18216	0644	edit dl rm
coff.h	12549	0644	edit dl rm
connector.h	2253	0644	edit dl rm
const.h	987	0644	edit dl rm
coresight-stm.h	747	0644	edit dl rm
cramfs_fs.h	3555	0644	edit dl rm
cryptouser.h	5321	0644	edit dl rm
cuda.h	905	0644	edit dl rm
cxl_mem.h	7915	0644	edit dl rm
cycx_cfm.h	2990	0644	edit dl rm
dcbnl.h	25292	0644	edit dl rm
dccp.h	6436	0644	edit dl rm
devlink.h	23316	0644	edit dl rm
dlm.h	2553	0644	edit dl rm
dlmconstants.h	5080	0644	edit dl rm
dlm_device.h	2543	0644	edit dl rm
dlm_netlink.h	1159	0644	edit dl rm
dlm_plock.h	894	0644	edit dl rm
dm-ioctl.h	11753	0644	edit dl rm
dm-log-userspace.h	15191	0644	edit dl rm
dma-buf.h	5247	0644	edit dl rm
dma-heap.h	1394	0644	edit dl rm
dn.h	4642	0644	edit dl rm
dns_resolver.h	3949	0644	edit dl rm
dpll.h	8697	0644	edit dl rm
dqblk_xfs.h	9388	0644	edit dl rm
edd.h	5604	0644	edit dl rm
efs_fs_sb.h	2227	0644	edit dl rm
elf-em.h	2627	0644	edit dl rm
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elf.h	15042	0644	edit dl rm
errno.h	23	0644	edit dl rm
errqueue.h	1983	0644	edit dl rm
erspan.h	1059	0644	edit dl rm
ethtool.h	103855	0644	edit dl rm
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eventfd.h	264	0644	edit dl rm
eventpoll.h	2913	0644	edit dl rm
f2fs.h	3301	0644	edit dl rm
fadvise.h	842	0644	edit dl rm
falloc.h	3643	0644	edit dl rm
fanotify.h	7886	0644	edit dl rm
fb.h	16477	0644	edit dl rm
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fd.h	12117	0644	edit dl rm
fdreg.h	5364	0644	edit dl rm
fib_rules.h	2036	0644	edit dl rm
fiemap.h	2775	0644	edit dl rm
filter.h	2216	0644	edit dl rm
firewire-cdev.h	44240	0644	edit dl rm
firewire-constants.h	3231	0644	edit dl rm
fou.h	819	0644	edit dl rm
fpga-dfl.h	8728	0644	edit dl rm
fs.h	13186	0644	edit dl rm
fscrypt.h	6565	0644	edit dl rm
fsi.h	2255	0644	edit dl rm
fsl_hypervisor.h	7301	0644	edit dl rm
fsl_mc.h	734	0644	edit dl rm
fsmap.h	4393	0644	edit dl rm
fsverity.h	3185	0644	edit dl rm
fuse.h	25968	0644	edit dl rm
futex.h	6127	0644	edit dl rm
gameport.h	897	0644	edit dl rm
genetlink.h	2238	0644	edit dl rm
gen_stats.h	1526	0644	edit dl rm
gfs2_ondisk.h	14773	0644	edit dl rm
gpio.h	19922	0644	edit dl rm
gsmmux.h	4509	0644	edit dl rm
gtp.h	734	0644	edit dl rm
handshake.h	1646	0644	edit dl rm
hash_info.h	971	0644	edit dl rm
hdlc.h	637	0644	edit dl rm
hdlcdrv.h	2908	0644	edit dl rm
hdreg.h	22703	0644	edit dl rm
hid.h	2086	0644	edit dl rm
hiddev.h	6345	0644	edit dl rm
hidraw.h	1993	0644	edit dl rm
hpet.h	743	0644	edit dl rm
hsr_netlink.h	1101	0644	edit dl rm
hw_breakpoint.h	742	0644	edit dl rm
hyperv.h	11152	0644	edit dl rm
i2c-dev.h	1875	0644	edit dl rm
i2c.h	6890	0644	edit dl rm
i2o-dev.h	11555	0644	edit dl rm
i8k.h	1528	0644	edit dl rm
icmp.h	4785	0644	edit dl rm
icmpv6.h	4300	0644	edit dl rm
idxd.h	9328	0644	edit dl rm
if.h	10925	0644	edit dl rm
ife.h	351	0644	edit dl rm
if_addr.h	1886	0644	edit dl rm
if_addrlabel.h	721	0644	edit dl rm
if_alg.h	1566	0644	edit dl rm
if_arcnet.h	3717	0644	edit dl rm
if_arp.h	6565	0644	edit dl rm
if_bonding.h	5145	0644	edit dl rm
if_bridge.h	20755	0644	edit dl rm
if_cablemodem.h	986	0644	edit dl rm
if_eql.h	1349	0644	edit dl rm
if_ether.h	8410	0644	edit dl rm
if_fc.h	1738	0644	edit dl rm
if_fddi.h	4369	0644	edit dl rm
if_hippi.h	4235	0644	edit dl rm
if_infiniband.h	1245	0644	edit dl rm
if_link.h	54131	0644	edit dl rm
if_ltalk.h	210	0644	edit dl rm
if_macsec.h	6503	0644	edit dl rm
if_packet.h	8183	0644	edit dl rm
if_phonet.h	424	0644	edit dl rm
if_plip.h	660	0644	edit dl rm
if_ppp.h	29	0644	edit dl rm
if_pppol2tp.h	3303	0644	edit dl rm
if_pppox.h	4879	0644	edit dl rm
if_slip.h	872	0644	edit dl rm
if_team.h	2600	0644	edit dl rm
if_tun.h	4098	0644	edit dl rm
if_tunnel.h	5488	0644	edit dl rm
if_vlan.h	1831	0644	edit dl rm
if_x25.h	881	0644	edit dl rm
if_xdp.h	5414	0644	edit dl rm
igmp.h	3064	0644	edit dl rm
ila.h	1246	0644	edit dl rm
in.h	10486	0644	edit dl rm
in6.h	7537	0644	edit dl rm
inet_diag.h	5017	0644	edit dl rm
inotify.h	3292	0644	edit dl rm
input-event-codes.h	30203	0644	edit dl rm
input.h	16217	0644	edit dl rm
in_route.h	936	0644	edit dl rm
ioctl.h	163	0644	edit dl rm
iommufd.h	37327	0644	edit dl rm
ioprio.h	4175	0644	edit dl rm
io_uring.h	20887	0644	edit dl rm
ip.h	4813	0644	edit dl rm
ip6_tunnel.h	1953	0644	edit dl rm
ipc.h	2101	0644	edit dl rm
ipmi.h	15442	0644	edit dl rm
ipmi_bmc.h	488	0644	edit dl rm
ipmi_msgdefs.h	3430	0644	edit dl rm
ipmi_ssif_bmc.h	441	0644	edit dl rm
ipsec.h	947	0644	edit dl rm
ipv6.h	4169	0644	edit dl rm
ipv6_route.h	1908	0644	edit dl rm
ipx.h	2347	0644	edit dl rm
ip_vs.h	14135	0644	edit dl rm
irqnr.h	104	0644	edit dl rm
iso_fs.h	6485	0644	edit dl rm
isst_if.h	15281	0644	edit dl rm
ivtv.h	3022	0644	edit dl rm
ivtvfb.h	1207	0644	edit dl rm
jffs2.h	6815	0644	edit dl rm
joystick.h	3434	0644	edit dl rm
kcm.h	822	0644	edit dl rm
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kcov.h	1963	0644	edit dl rm
kd.h	6452	0644	edit dl rm
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kernel.h	194	0644	edit dl rm
kernelcapi.h	1019	0644	edit dl rm
kexec.h	2097	0644	edit dl rm
keyboard.h	13459	0644	edit dl rm
keyctl.h	5996	0644	edit dl rm
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kvm.h	48372	0644	edit dl rm
kvm_para.h	1001	0644	edit dl rm
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lp.h	4190	0644	edit dl rm
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mptcp.h	3763	0644	edit dl rm
mptcp_pm.h	4407	0644	edit dl rm
mqueue.h	2201	0644	edit dl rm
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mrp_bridge.h	1708	0644	edit dl rm
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msg.h	3386	0644	edit dl rm
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mtio.h	8175	0644	edit dl rm
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net.h	2085	0644	edit dl rm
netconf.h	614	0644	edit dl rm
netdev.h	5786	0644	edit dl rm
netdevice.h	2253	0644	edit dl rm
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netfilter_arp.h	445	0644	edit dl rm
netfilter_bridge.h	1168	0644	edit dl rm
netfilter_decnet.h	1758	0644	edit dl rm
netfilter_ipv4.h	1488	0644	edit dl rm
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nfs_fs.h	1654	0644	edit dl rm
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nvram.h	532	0644	edit dl rm
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omapfb.h	5918	0644	edit dl rm
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packet_diag.h	1672	0644	edit dl rm
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pci.h	1380	0644	edit dl rm
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pci_regs.h	63374	0644	edit dl rm
perf_event.h	43709	0644	edit dl rm
personality.h	2097	0644	edit dl rm
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string.h	238	0644	edit dl rm
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sysinfo.h	1049	0644	edit dl rm
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taskstats.h	8322	0644	edit dl rm
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Edit: /usr/include/linux/fuse.h (25968B)

/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */
/*
    This file defines the kernel interface of FUSE
    Copyright (C) 2001-2008  Miklos Szeredi <miklos@szeredi.hu>

This program can be distributed under the terms of the GNU GPL.
    See the file COPYING.

This -- and only this -- header file may also be distributed under
    the terms of the BSD Licence as follows:

Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:
    1. Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    SUCH DAMAGE.
*/

/*
 * This file defines the kernel interface of FUSE
 *
 * Protocol changelog:
 *
 * 7.1:
 *  - add the following messages:
 *      FUSE_SETATTR, FUSE_SYMLINK, FUSE_MKNOD, FUSE_MKDIR, FUSE_UNLINK,
 *      FUSE_RMDIR, FUSE_RENAME, FUSE_LINK, FUSE_OPEN, FUSE_READ, FUSE_WRITE,
 *      FUSE_RELEASE, FUSE_FSYNC, FUSE_FLUSH, FUSE_SETXATTR, FUSE_GETXATTR,
 *      FUSE_LISTXATTR, FUSE_REMOVEXATTR, FUSE_OPENDIR, FUSE_READDIR,
 *      FUSE_RELEASEDIR
 *  - add padding to messages to accommodate 32-bit servers on 64-bit kernels
 *
 * 7.2:
 *  - add FOPEN_DIRECT_IO and FOPEN_KEEP_CACHE flags
 *  - add FUSE_FSYNCDIR message
 *
 * 7.3:
 *  - add FUSE_ACCESS message
 *  - add FUSE_CREATE message
 *  - add filehandle to fuse_setattr_in
 *
 * 7.4:
 *  - add frsize to fuse_kstatfs
 *  - clean up request size limit checking
 *
 * 7.5:
 *  - add flags and max_write to fuse_init_out
 *
 * 7.6:
 *  - add max_readahead to fuse_init_in and fuse_init_out
 *
 * 7.7:
 *  - add FUSE_INTERRUPT message
 *  - add POSIX file lock support
 *
 * 7.8:
 *  - add lock_owner and flags fields to fuse_release_in
 *  - add FUSE_BMAP message
 *  - add FUSE_DESTROY message
 *
 * 7.9:
 *  - new fuse_getattr_in input argument of GETATTR
 *  - add lk_flags in fuse_lk_in
 *  - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
 *  - add blksize field to fuse_attr
 *  - add file flags field to fuse_read_in and fuse_write_in
 *  - Add ATIME_NOW and MTIME_NOW flags to fuse_setattr_in
 *
 * 7.10
 *  - add nonseekable open flag
 *
 * 7.11
 *  - add IOCTL message
 *  - add unsolicited notification support
 *  - add POLL message and NOTIFY_POLL notification
 *
 * 7.12
 *  - add umask flag to input argument of create, mknod and mkdir
 *  - add notification messages for invalidation of inodes and
 *    directory entries
 *
 * 7.13
 *  - make max number of background requests and congestion threshold
 *    tunables
 *
 * 7.14
 *  - add splice support to fuse device
 *
 * 7.15
 *  - add store notify
 *  - add retrieve notify
 *
 * 7.16
 *  - add BATCH_FORGET request
 *  - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct
 *    fuse_ioctl_iovec' instead of ambiguous 'struct iovec'
 *  - add FUSE_IOCTL_32BIT flag
 *
 * 7.17
 *  - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK
 *
 * 7.18
 *  - add FUSE_IOCTL_DIR flag
 *  - add FUSE_NOTIFY_DELETE
 *
 * 7.19
 *  - add FUSE_FALLOCATE
 *
 * 7.20
 *  - add FUSE_AUTO_INVAL_DATA
 *
 * 7.21
 *  - add FUSE_READDIRPLUS
 *  - send the requested events in POLL request
 *
 * 7.22
 *  - add FUSE_ASYNC_DIO
 *
 * 7.23
 *  - add FUSE_WRITEBACK_CACHE
 *  - add time_gran to fuse_init_out
 *  - add reserved space to fuse_init_out
 *  - add FATTR_CTIME
 *  - add ctime and ctimensec to fuse_setattr_in
 *  - add FUSE_RENAME2 request
 *  - add FUSE_NO_OPEN_SUPPORT flag
 *
 *  7.24
 *  - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support
 *
 *  7.25
 *  - add FUSE_PARALLEL_DIROPS
 *
 *  7.26
 *  - add FUSE_HANDLE_KILLPRIV
 *  - add FUSE_POSIX_ACL
 *
 *  7.27
 *  - add FUSE_ABORT_ERROR
 *
 *  7.28
 *  - add FUSE_COPY_FILE_RANGE
 *  - add FOPEN_CACHE_DIR
 *  - add FUSE_MAX_PAGES, add max_pages to init_out
 *  - add FUSE_CACHE_SYMLINKS
 *
 *  7.29
 *  - add FUSE_NO_OPENDIR_SUPPORT flag
 *
 *  7.30
 *  - add FUSE_EXPLICIT_INVAL_DATA
 *  - add FUSE_IOCTL_COMPAT_X32
 *
 *  7.31
 *  - add FUSE_WRITE_KILL_PRIV flag
 *  - add FUSE_SETUPMAPPING and FUSE_REMOVEMAPPING
 *  - add map_alignment to fuse_init_out, add FUSE_MAP_ALIGNMENT flag
 *
 *  7.32
 *  - add flags to fuse_attr, add FUSE_ATTR_SUBMOUNT, add FUSE_SUBMOUNTS
 *
 *  7.33
 *  - add FUSE_HANDLE_KILLPRIV_V2, FUSE_WRITE_KILL_SUIDGID, FATTR_KILL_SUIDGID
 *  - add FUSE_OPEN_KILL_SUIDGID
 *  - extend fuse_setxattr_in, add FUSE_SETXATTR_EXT
 *  - add FUSE_SETXATTR_ACL_KILL_SGID
 *
 *  7.34
 *  - add FUSE_SYNCFS
 *
 *  7.35
 *  - add FOPEN_NOFLUSH
 *
 *  7.36
 *  - extend fuse_init_in with reserved fields, add FUSE_INIT_EXT init flag
 *  - add flags2 to fuse_init_in and fuse_init_out
 *  - add FUSE_SECURITY_CTX init flag
 *  - add security context to create, mkdir, symlink, and mknod requests
 *  - add FUSE_EXPIRE_ONLY flag to fuse_notify_inval_entry
 *  - add FUSE_HAS_EXPIRE_ONLY
 *
 *  7.37
 *  - add FUSE_TMPFILE
 */

#ifndef _LINUX_FUSE_H
#define _LINUX_FUSE_H

#include <stdint.h>

/*
 * Version negotiation:
 *
 * Both the kernel and userspace send the version they support in the
 * INIT request and reply respectively.
 *
 * If the major versions match then both shall use the smallest
 * of the two minor versions for communication.
 *
 * If the kernel supports a larger major version, then userspace shall
 * reply with the major version it supports, ignore the rest of the
 * INIT message and expect a new INIT message from the kernel with a
 * matching major version.
 *
 * If the library supports a larger major version, then it shall fall
 * back to the major protocol version sent by the kernel for
 * communication and reply with that major version (and an arbitrary
 * supported minor version).
 */

/** Version number of this interface */
#define FUSE_KERNEL_VERSION 7

/** Minor version number of this interface */
#define FUSE_KERNEL_MINOR_VERSION 37

/** The node ID of the root inode */
#define FUSE_ROOT_ID 1

/* Make sure all structures are padded to 64bit boundary, so 32bit
   userspace works under 64bit kernels */

struct fuse_attr {
	uint64_t	ino;
	uint64_t	size;
	uint64_t	blocks;
	uint64_t	atime;
	uint64_t	mtime;
	uint64_t	ctime;
	uint32_t	atimensec;
	uint32_t	mtimensec;
	uint32_t	ctimensec;
	uint32_t	mode;
	uint32_t	nlink;
	uint32_t	uid;
	uint32_t	gid;
	uint32_t	rdev;
	uint32_t	blksize;
	uint32_t	flags;
};

struct fuse_kstatfs {
	uint64_t	blocks;
	uint64_t	bfree;
	uint64_t	bavail;
	uint64_t	files;
	uint64_t	ffree;
	uint32_t	bsize;
	uint32_t	namelen;
	uint32_t	frsize;
	uint32_t	padding;
	uint32_t	spare[6];
};

struct fuse_file_lock {
	uint64_t	start;
	uint64_t	end;
	uint32_t	type;
	uint32_t	pid; /* tgid */
};

/**
 * Bitmasks for fuse_setattr_in.valid
 */
#define FATTR_MODE	(1 << 0)
#define FATTR_UID	(1 << 1)
#define FATTR_GID	(1 << 2)
#define FATTR_SIZE	(1 << 3)
#define FATTR_ATIME	(1 << 4)
#define FATTR_MTIME	(1 << 5)
#define FATTR_FH	(1 << 6)
#define FATTR_ATIME_NOW	(1 << 7)
#define FATTR_MTIME_NOW	(1 << 8)
#define FATTR_LOCKOWNER	(1 << 9)
#define FATTR_CTIME	(1 << 10)
#define FATTR_KILL_SUIDGID	(1 << 11)

/**
 * Flags returned by the OPEN request
 *
 * FOPEN_DIRECT_IO: bypass page cache for this open file
 * FOPEN_KEEP_CACHE: don't invalidate the data cache on open
 * FOPEN_NONSEEKABLE: the file is not seekable
 * FOPEN_CACHE_DIR: allow caching this directory
 * FOPEN_STREAM: the file is stream-like (no file position at all)
 * FOPEN_NOFLUSH: don't flush data cache on close (unless FUSE_WRITEBACK_CACHE)
 * FOPEN_PARALLEL_DIRECT_WRITES: Allow concurrent direct writes on the same inode
 */
#define FOPEN_DIRECT_IO		(1 << 0)
#define FOPEN_KEEP_CACHE	(1 << 1)
#define FOPEN_NONSEEKABLE	(1 << 2)
#define FOPEN_CACHE_DIR		(1 << 3)
#define FOPEN_STREAM		(1 << 4)
#define FOPEN_NOFLUSH		(1 << 5)
#define FOPEN_PARALLEL_DIRECT_WRITES	(1 << 6)

/**
 * INIT request/reply flags
 *
 * FUSE_ASYNC_READ: asynchronous read requests
 * FUSE_POSIX_LOCKS: remote locking for POSIX file locks
 * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported)
 * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem
 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."
 * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB
 * FUSE_DONT_MASK: don't apply umask to file mode on create operations
 * FUSE_SPLICE_WRITE: kernel supports splice write on the device
 * FUSE_SPLICE_MOVE: kernel supports splice move on the device
 * FUSE_SPLICE_READ: kernel supports splice read on the device
 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks
 * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories
 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages
 * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one)
 * FUSE_READDIRPLUS_AUTO: adaptive readdirplus
 * FUSE_ASYNC_DIO: asynchronous direct I/O submission
 * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes
 * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens
 * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir
 * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc
 * FUSE_POSIX_ACL: filesystem supports posix acls
 * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED
 * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages
 * FUSE_CACHE_SYMLINKS: cache READLINK responses
 * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir
 * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request
 * FUSE_MAP_ALIGNMENT: init_out.map_alignment contains log2(byte alignment) for
 *		       foffset and moffset fields in struct
 *		       fuse_setupmapping_out and fuse_removemapping_one.
 * FUSE_SUBMOUNTS: kernel supports auto-mounting directory submounts
 * FUSE_HANDLE_KILLPRIV_V2: fs kills suid/sgid/cap on write/chown/trunc.
 *			Upon write/truncate suid/sgid is only killed if caller
 *			does not have CAP_FSETID. Additionally upon
 *			write/truncate sgid is killed only if file has group
 *			execute permission. (Same as Linux VFS behavior).
 * FUSE_SETXATTR_EXT:	Server supports extended struct fuse_setxattr_in
 * FUSE_INIT_EXT: extended fuse_init_in request
 * FUSE_INIT_RESERVED: reserved, do not use
 * FUSE_SECURITY_CTX:	add security context to create, mkdir, symlink, and
 *			mknod
 * FUSE_CREATE_SUPP_GROUP: add supplementary group info to create, mkdir,
 *			symlink and mknod (single group that matches parent)
 * FUSE_HAS_EXPIRE_ONLY: kernel supports expiry-only entry invalidation
 */
#define FUSE_ASYNC_READ		(1 << 0)
#define FUSE_POSIX_LOCKS	(1 << 1)
#define FUSE_FILE_OPS		(1 << 2)
#define FUSE_ATOMIC_O_TRUNC	(1 << 3)
#define FUSE_EXPORT_SUPPORT	(1 << 4)
#define FUSE_BIG_WRITES		(1 << 5)
#define FUSE_DONT_MASK		(1 << 6)
#define FUSE_SPLICE_WRITE	(1 << 7)
#define FUSE_SPLICE_MOVE	(1 << 8)
#define FUSE_SPLICE_READ	(1 << 9)
#define FUSE_FLOCK_LOCKS	(1 << 10)
#define FUSE_HAS_IOCTL_DIR	(1 << 11)
#define FUSE_AUTO_INVAL_DATA	(1 << 12)
#define FUSE_DO_READDIRPLUS	(1 << 13)
#define FUSE_READDIRPLUS_AUTO	(1 << 14)
#define FUSE_ASYNC_DIO		(1 << 15)
#define FUSE_WRITEBACK_CACHE	(1 << 16)
#define FUSE_NO_OPEN_SUPPORT	(1 << 17)
#define FUSE_PARALLEL_DIROPS    (1 << 18)
#define FUSE_HANDLE_KILLPRIV	(1 << 19)
#define FUSE_POSIX_ACL		(1 << 20)
#define FUSE_ABORT_ERROR	(1 << 21)
#define FUSE_MAX_PAGES		(1 << 22)
#define FUSE_CACHE_SYMLINKS	(1 << 23)
#define FUSE_NO_OPENDIR_SUPPORT (1 << 24)
#define FUSE_EXPLICIT_INVAL_DATA (1 << 25)
#define FUSE_MAP_ALIGNMENT	(1 << 26)
#define FUSE_SUBMOUNTS		(1 << 27)
#define FUSE_HANDLE_KILLPRIV_V2	(1 << 28)
#define FUSE_SETXATTR_EXT	(1 << 29)
#define FUSE_INIT_EXT		(1 << 30)
#define FUSE_INIT_RESERVED	(1 << 31)
/* bits 32..63 get shifted down 32 bits into the flags2 field */
#define FUSE_SECURITY_CTX	(1ULL << 32)
#define FUSE_CREATE_SUPP_GROUP	(1ULL << 34)
#define FUSE_HAS_EXPIRE_ONLY	(1ULL << 35)

/**
 * CUSE INIT request/reply flags
 *
 * CUSE_UNRESTRICTED_IOCTL:  use unrestricted ioctl
 */
#define CUSE_UNRESTRICTED_IOCTL	(1 << 0)

/**
 * Release flags
 */
#define FUSE_RELEASE_FLUSH	(1 << 0)
#define FUSE_RELEASE_FLOCK_UNLOCK	(1 << 1)

/**
 * Getattr flags
 */
#define FUSE_GETATTR_FH		(1 << 0)

/**
 * Lock flags
 */
#define FUSE_LK_FLOCK		(1 << 0)

/**
 * WRITE flags
 *
 * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
 * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
 * FUSE_WRITE_KILL_SUIDGID: kill suid and sgid bits
 */
#define FUSE_WRITE_CACHE	(1 << 0)
#define FUSE_WRITE_LOCKOWNER	(1 << 1)
#define FUSE_WRITE_KILL_SUIDGID (1 << 2)

/* Obsolete alias; this flag implies killing suid/sgid only. */
#define FUSE_WRITE_KILL_PRIV	FUSE_WRITE_KILL_SUIDGID

/**
 * Read flags
 */
#define FUSE_READ_LOCKOWNER	(1 << 1)

/**
 * Ioctl flags
 *
 * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine
 * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed
 * FUSE_IOCTL_RETRY: retry with new iovecs
 * FUSE_IOCTL_32BIT: 32bit ioctl
 * FUSE_IOCTL_DIR: is a directory
 * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t)
 *
 * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs
 */
#define FUSE_IOCTL_COMPAT	(1 << 0)
#define FUSE_IOCTL_UNRESTRICTED	(1 << 1)
#define FUSE_IOCTL_RETRY	(1 << 2)
#define FUSE_IOCTL_32BIT	(1 << 3)
#define FUSE_IOCTL_DIR		(1 << 4)
#define FUSE_IOCTL_COMPAT_X32	(1 << 5)

#define FUSE_IOCTL_MAX_IOV	256

/**
 * Poll flags
 *
 * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify
 */
#define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0)

/**
 * Fsync flags
 *
 * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata
 */
#define FUSE_FSYNC_FDATASYNC	(1 << 0)

/**
 * fuse_attr flags
 *
 * FUSE_ATTR_SUBMOUNT: Object is a submount root
 */
#define FUSE_ATTR_SUBMOUNT      (1 << 0)

/**
 * Open flags
 * FUSE_OPEN_KILL_SUIDGID: Kill suid and sgid if executable
 */
#define FUSE_OPEN_KILL_SUIDGID	(1 << 0)

/**
 * setxattr flags
 * FUSE_SETXATTR_ACL_KILL_SGID: Clear SGID when system.posix_acl_access is set
 */
#define FUSE_SETXATTR_ACL_KILL_SGID	(1 << 0)

/**
 * notify_inval_entry flags
 * FUSE_EXPIRE_ONLY
 */
#define FUSE_EXPIRE_ONLY		(1 << 0)

/**
 * extension type
 * FUSE_MAX_NR_SECCTX: maximum value of &fuse_secctx_header.nr_secctx
 * FUSE_EXT_GROUPS: &fuse_supp_groups extension
 */
enum fuse_ext_type {
	/* Types 0..31 are reserved for fuse_secctx_header */
	FUSE_MAX_NR_SECCTX	= 31,
	FUSE_EXT_GROUPS		= 32,
};

enum fuse_opcode {
	FUSE_LOOKUP		= 1,
	FUSE_FORGET		= 2,  /* no reply */
	FUSE_GETATTR		= 3,
	FUSE_SETATTR		= 4,
	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,
	FUSE_SYNCFS		= 50,
	FUSE_TMPFILE		= 51,

/* 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;
	uint32_t	flags2;
	uint32_t	unused[11];
};

#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	flags2;
	uint32_t	unused[7];
};

#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;
	uint16_t	total_extlen; /* length of extensions in 8byte units */
	uint16_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[];
};

/* Align variable length records to 64bit boundary */
#define FUSE_REC_ALIGN(x) \
	(((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1))

#define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
#define FUSE_DIRENT_ALIGN(x) FUSE_REC_ALIGN(x)
#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	flags;
};

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))

struct fuse_syncfs_in {
	uint64_t	padding;
};

/*
 * For each security context, send fuse_secctx with size of security context
 * fuse_secctx will be followed by security context name and this in turn
 * will be followed by actual context label.
 * fuse_secctx, name, context
 */
struct fuse_secctx {
	uint32_t	size;
	uint32_t	padding;
};

/*
 * Contains the information about how many fuse_secctx structures are being
 * sent and what's the total size of all security contexts (including
 * size of fuse_secctx_header).
 *
 */
struct fuse_secctx_header {
	uint32_t	size;
	uint32_t	nr_secctx;
};

/**
 * struct fuse_ext_header - extension header
 * @size: total size of this extension including this header
 * @type: type of extension
 *
 * This is made compatible with fuse_secctx_header by using type values >
 * FUSE_MAX_NR_SECCTX
 */
struct fuse_ext_header {
	uint32_t	size;
	uint32_t	type;
};

/**
 * struct fuse_supp_groups - Supplementary group extension
 * @nr_groups: number of supplementary groups
 * @groups: flexible array of group IDs
 */
struct fuse_supp_groups {
	uint32_t	nr_groups;
	uint32_t	groups[];
};

#endif /* _LINUX_FUSE_H */

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