new file mode 100644
@@ -0,0 +1,5 @@
+This subtree contains bundled files included verbatim from other
+sources. They are used for building the support/ infrastructure.
+
+linux/
+ Select files from the Linux 6.10 source tree.
new file mode 100644
@@ -0,0 +1,20 @@
+The Linux Kernel is provided under:
+
+ SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
+
+Being under the terms of the GNU General Public License version 2 only,
+according with:
+
+ LICENSES/preferred/GPL-2.0
+
+With an explicit syscall exception, as stated at:
+
+ LICENSES/exceptions/Linux-syscall-note
+
+In addition, other licenses may also apply. Please see:
+
+ Documentation/process/license-rules.rst
+
+for more details.
+
+All contributions to the Linux Kernel are subject to this COPYING file.
new file mode 100644
@@ -0,0 +1,24 @@
+SPDX-Exception-Identifier: Linux-syscall-note
+SPDX-URL: https://spdx.org/licenses/Linux-syscall-note.html
+SPDX-Licenses: GPL-2.0, GPL-2.0+, GPL-1.0+, LGPL-2.0, LGPL-2.0+, LGPL-2.1, LGPL-2.1+, GPL-2.0-only, GPL-2.0-or-later
+Usage-Guide:
+ This exception is used together with one of the above SPDX-Licenses
+ to mark user space API (uapi) header files so they can be included
+ into non GPL compliant user space application code.
+ To use this exception add it with the keyword WITH to one of the
+ identifiers in the SPDX-Licenses tag:
+ SPDX-License-Identifier: <SPDX-License> WITH Linux-syscall-note
+License-Text:
+
+ NOTE! This copyright does *not* cover user programs that use kernel
+ services by normal system calls - this is merely considered normal use
+ of the kernel, and does *not* fall under the heading of "derived work".
+ Also note that the GPL below is copyrighted by the Free Software
+ Foundation, but the instance of code that it refers to (the Linux
+ kernel) is copyrighted by me and others who actually wrote it.
+
+ Also note that the only valid version of the GPL as far as the kernel
+ is concerned is _this_ particular version of the license (ie v2, not
+ v2.2 or v3.x or whatever), unless explicitly otherwise stated.
+
+ Linus Torvalds
new file mode 100644
@@ -0,0 +1,359 @@
+Valid-License-Identifier: GPL-2.0
+Valid-License-Identifier: GPL-2.0-only
+Valid-License-Identifier: GPL-2.0+
+Valid-License-Identifier: GPL-2.0-or-later
+SPDX-URL: https://spdx.org/licenses/GPL-2.0.html
+Usage-Guide:
+ To use this license in source code, put one of the following SPDX
+ tag/value pairs into a comment according to the placement
+ guidelines in the licensing rules documentation.
+ For 'GNU General Public License (GPL) version 2 only' use:
+ SPDX-License-Identifier: GPL-2.0
+ or
+ SPDX-License-Identifier: GPL-2.0-only
+ For 'GNU General Public License (GPL) version 2 or any later version' use:
+ SPDX-License-Identifier: GPL-2.0+
+ or
+ SPDX-License-Identifier: GPL-2.0-or-later
+License-Text:
+
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
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+
+ To protect your rights, we need to make restrictions that forbid
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+These restrictions translate to certain responsibilities for you if you
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+
+ For example, if you distribute copies of such a program, whether
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+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
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+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
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+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
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+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
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+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
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+
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+ allowed only for noncommercial distribution and only if you
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+The source code for a work means the preferred form of the work for
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+
+ 4. You may not copy, modify, sublicense, or distribute the Program
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+
+ 5. You are not required to accept this License, since you have not
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+
+ 6. Each time you redistribute the Program (or any work based on the
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+
+ 7. If, as a consequence of a court judgment or allegation of patent
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+
+If any portion of this section is held invalid or unenforceable under
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+
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+
+This section is intended to make thoroughly clear what is believed to
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+
+ 8. If the distribution and/or use of the Program is restricted in
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+
+ 9. The Free Software Foundation may publish revised and/or new versions
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+
+Each version is given a distinguishing version number. If the Program
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+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
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+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
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+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
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+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
new file mode 100644
@@ -0,0 +1,1189 @@
+/* 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:
+
+ Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved.
+
+ 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_HAS_INODE_DAX, FUSE_ATTR_DAX
+ *
+ * 7.37
+ * - add FUSE_TMPFILE
+ *
+ * 7.38
+ * - add FUSE_EXPIRE_ONLY flag to fuse_notify_inval_entry
+ * - add FOPEN_PARALLEL_DIRECT_WRITES
+ * - add total_extlen to fuse_in_header
+ * - add FUSE_MAX_NR_SECCTX
+ * - add extension header
+ * - add FUSE_EXT_GROUPS
+ * - add FUSE_CREATE_SUPP_GROUP
+ * - add FUSE_HAS_EXPIRE_ONLY
+ *
+ * 7.39
+ * - add FUSE_DIRECT_IO_ALLOW_MMAP
+ * - add FUSE_STATX and related structures
+ *
+ * 7.40
+ * - add max_stack_depth to fuse_init_out, add FUSE_PASSTHROUGH init flag
+ * - add backing_id to fuse_open_out, add FOPEN_PASSTHROUGH open flag
+ * - add FUSE_NO_EXPORT_SUPPORT init flag
+ * - add FUSE_NOTIFY_RESEND, add FUSE_HAS_RESEND init flag
+ */
+
+#ifndef _LINUX_FUSE_H
+#define _LINUX_FUSE_H
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+#else
+#include <stdint.h>
+#endif
+
+/*
+ * 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 40
+
+/** 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;
+};
+
+/*
+ * The following structures are bit-for-bit compatible with the statx(2) ABI in
+ * Linux.
+ */
+struct fuse_sx_time {
+ int64_t tv_sec;
+ uint32_t tv_nsec;
+ int32_t __reserved;
+};
+
+struct fuse_statx {
+ uint32_t mask;
+ uint32_t blksize;
+ uint64_t attributes;
+ uint32_t nlink;
+ uint32_t uid;
+ uint32_t gid;
+ uint16_t mode;
+ uint16_t __spare0[1];
+ uint64_t ino;
+ uint64_t size;
+ uint64_t blocks;
+ uint64_t attributes_mask;
+ struct fuse_sx_time atime;
+ struct fuse_sx_time btime;
+ struct fuse_sx_time ctime;
+ struct fuse_sx_time mtime;
+ uint32_t rdev_major;
+ uint32_t rdev_minor;
+ uint32_t dev_major;
+ uint32_t dev_minor;
+ uint64_t __spare2[14];
+};
+
+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
+ * FOPEN_PASSTHROUGH: passthrough read/write io for this open file
+ */
+#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)
+#define FOPEN_PASSTHROUGH (1 << 7)
+
+/**
+ * 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_HAS_INODE_DAX: use per inode DAX
+ * 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
+ * FUSE_DIRECT_IO_ALLOW_MMAP: allow shared mmap in FOPEN_DIRECT_IO mode.
+ * FUSE_NO_EXPORT_SUPPORT: explicitly disable export support
+ * FUSE_HAS_RESEND: kernel supports resending pending requests, and the high bit
+ * of the request ID indicates resend requests
+ */
+#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_HAS_INODE_DAX (1ULL << 33)
+#define FUSE_CREATE_SUPP_GROUP (1ULL << 34)
+#define FUSE_HAS_EXPIRE_ONLY (1ULL << 35)
+#define FUSE_DIRECT_IO_ALLOW_MMAP (1ULL << 36)
+#define FUSE_PASSTHROUGH (1ULL << 37)
+#define FUSE_NO_EXPORT_SUPPORT (1ULL << 38)
+#define FUSE_HAS_RESEND (1ULL << 39)
+
+/* Obsolete alias for FUSE_DIRECT_IO_ALLOW_MMAP */
+#define FUSE_DIRECT_IO_RELAX FUSE_DIRECT_IO_ALLOW_MMAP
+
+/**
+ * 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
+ * FUSE_ATTR_DAX: Enable DAX for this file in per inode DAX mode
+ */
+#define FUSE_ATTR_SUBMOUNT (1 << 0)
+#define FUSE_ATTR_DAX (1 << 1)
+
+/**
+ * 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,
+ FUSE_STATX = 52,
+
+ /* 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_RESEND = 7,
+ 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;
+};
+
+struct fuse_statx_in {
+ uint32_t getattr_flags;
+ uint32_t reserved;
+ uint64_t fh;
+ uint32_t sx_flags;
+ uint32_t sx_mask;
+};
+
+struct fuse_statx_out {
+ uint64_t attr_valid; /* Cache timeout for the attributes */
+ uint32_t attr_valid_nsec;
+ uint32_t flags;
+ uint64_t spare[2];
+ struct fuse_statx stat;
+};
+
+#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;
+ int32_t backing_id;
+};
+
+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 max_stack_depth;
+ uint32_t unused[6];
+};
+
+#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;
+};
+
+/**
+ * FUSE request unique ID flag
+ *
+ * Indicates whether this is a resend request. The receiver should handle this
+ * request accordingly.
+ */
+#define FUSE_UNIQUE_RESEND (1ULL << 63)
+
+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;
+};
+
+struct fuse_backing_map {
+ int32_t fd;
+ uint32_t flags;
+ uint64_t padding;
+};
+
+/* Device ioctls: */
+#define FUSE_DEV_IOC_MAGIC 229
+#define FUSE_DEV_IOC_CLONE _IOR(FUSE_DEV_IOC_MAGIC, 0, uint32_t)
+#define FUSE_DEV_IOC_BACKING_OPEN _IOW(FUSE_DEV_IOC_MAGIC, 1, \
+ struct fuse_backing_map)
+#define FUSE_DEV_IOC_BACKING_CLOSE _IOW(FUSE_DEV_IOC_MAGIC, 2, 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 */
And include the required licensing information. The only change is a removed trailing empty line in LICENSES/exceptions/Linux-syscall-note. Bundling <linux/fuse.h> is the recommended way to deal with the evolution of the FUSE userspace interface because structs change sizes over time. The kernel maintains compatibility, but source-level compatibility on recompilation may require additional code that is aware of older struct sizes. Signed-off-by: Florian Weimer <fweimer@redhat.com> --- support/bundled/README | 5 + support/bundled/linux/COPYING | 20 + .../LICENSES/exceptions/Linux-syscall-note | 24 + .../bundled/linux/LICENSES/preferred/GPL-2.0 | 359 +++++ .../bundled/linux/include/uapi/linux/fuse.h | 1189 +++++++++++++++++ 5 files changed, 1597 insertions(+) create mode 100644 support/bundled/README create mode 100644 support/bundled/linux/COPYING create mode 100644 support/bundled/linux/LICENSES/exceptions/Linux-syscall-note create mode 100644 support/bundled/linux/LICENSES/preferred/GPL-2.0 create mode 100644 support/bundled/linux/include/uapi/linux/fuse.h