| Message ID | 20191021105832.36574-3-dgilbert@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | virtiofs daemon (base) | expand |
On Mon, Oct 21, 2019 at 11:58:04AM +0100, Dr. David Alan Gilbert (git) wrote: > From: "Dr. David Alan Gilbert" <dgilbert@redhat.com> > > Pull in fuse.h from the kernel; version 97f9a3c4eee55b0178b518ae7114a6a53372913d > > Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> > --- > contrib/virtiofsd/fuse_kernel.h | 858 ++++++++++++++++++++++++++++++++ > 1 file changed, 858 insertions(+) > create mode 100644 contrib/virtiofsd/fuse_kernel.h > > diff --git a/contrib/virtiofsd/fuse_kernel.h b/contrib/virtiofsd/fuse_kernel.h > new file mode 100644 > index 0000000000..802b0377a4 > --- /dev/null > +++ b/contrib/virtiofsd/fuse_kernel.h > @@ -0,0 +1,858 @@ > +/* 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. So I guess we need COPYING then? > + 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: > + * > + * 7.9: > + * - 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 > + */ > + > +#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 31 > + > +/** 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 padding; > +}; > + > +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) > + > +/** > + * 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) > + */ > +#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) > + > +/** > + * 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: map_alignment field is valid > + */ > +#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) > + > +/** > + * 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_PRIV: kill suid and sgid bits > + */ > +#define FUSE_WRITE_CACHE (1 << 0) > +#define FUSE_WRITE_LOCKOWNER (1 << 1) > +#define FUSE_WRITE_KILL_PRIV (1 << 2) > + > +/** > + * 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) > + > +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, > + > + /* 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 unused; > +}; > + > +struct fuse_create_in { > + uint32_t flags; > + uint32_t mode; > + uint32_t umask; > + uint32_t padding; > +}; > + > +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; > +}; > + > +struct fuse_setxattr_in { > + uint32_t size; > + uint32_t flags; > +}; > + > +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_CLONE _IOR(229, 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; > +}; > + > +#endif /* _LINUX_FUSE_H */ > -- > 2.23.0
On Mon, Oct 21, 2019 at 11:58:04AM +0100, Dr. David Alan Gilbert (git) wrote: > From: "Dr. David Alan Gilbert" <dgilbert@redhat.com> > > Pull in fuse.h from the kernel; version 97f9a3c4eee55b0178b518ae7114a6a53372913d How about using some tag instead? > Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> > --- > contrib/virtiofsd/fuse_kernel.h | 858 ++++++++++++++++++++++++++++++++ > 1 file changed, 858 insertions(+) > create mode 100644 contrib/virtiofsd/fuse_kernel.h > > diff --git a/contrib/virtiofsd/fuse_kernel.h b/contrib/virtiofsd/fuse_kernel.h > new file mode 100644 > index 0000000000..802b0377a4 > --- /dev/null > +++ b/contrib/virtiofsd/fuse_kernel.h > @@ -0,0 +1,858 @@ > +/* 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: > + * > + * 7.9: > + * - 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 > + */ > + > +#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 31 > + > +/** 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 padding; > +}; > + > +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) > + > +/** > + * 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) > + */ > +#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) > + > +/** > + * 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: map_alignment field is valid > + */ > +#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) > + > +/** > + * 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_PRIV: kill suid and sgid bits > + */ > +#define FUSE_WRITE_CACHE (1 << 0) > +#define FUSE_WRITE_LOCKOWNER (1 << 1) > +#define FUSE_WRITE_KILL_PRIV (1 << 2) > + > +/** > + * 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) > + > +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, > + > + /* 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 unused; > +}; > + > +struct fuse_create_in { > + uint32_t flags; > + uint32_t mode; > + uint32_t umask; > + uint32_t padding; > +}; > + > +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; > +}; > + > +struct fuse_setxattr_in { > + uint32_t size; > + uint32_t flags; > +}; > + > +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_CLONE _IOR(229, 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; > +}; > + > +#endif /* _LINUX_FUSE_H */ > -- > 2.23.0
* Michael S. Tsirkin (mst@redhat.com) wrote: > On Mon, Oct 21, 2019 at 11:58:04AM +0100, Dr. David Alan Gilbert (git) wrote: > > From: "Dr. David Alan Gilbert" <dgilbert@redhat.com> > > > > Pull in fuse.h from the kernel; version 97f9a3c4eee55b0178b518ae7114a6a53372913d > > > > Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> > > --- > > contrib/virtiofsd/fuse_kernel.h | 858 ++++++++++++++++++++++++++++++++ > > 1 file changed, 858 insertions(+) > > create mode 100644 contrib/virtiofsd/fuse_kernel.h > > > > diff --git a/contrib/virtiofsd/fuse_kernel.h b/contrib/virtiofsd/fuse_kernel.h > > new file mode 100644 > > index 0000000000..802b0377a4 > > --- /dev/null > > +++ b/contrib/virtiofsd/fuse_kernel.h > > @@ -0,0 +1,858 @@ > > +/* 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. > > So I guess we need COPYING then? We already have a COPYING file which has a copy of the GPLv2 in. (The kernel's copying file has SPDX for gpl 2 and the note about the linux syscall exception). Curiously the libfuse repo also has this comment block, but doesn't have a COPYING file (It has a GPL2.txt and an LGPL2.txt). Dave > > + 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: > > + * > > + * 7.9: > > + * - 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 > > + */ > > + > > +#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 31 > > + > > +/** 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 padding; > > +}; > > + > > +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) > > + > > +/** > > + * 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) > > + */ > > +#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) > > + > > +/** > > + * 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: map_alignment field is valid > > + */ > > +#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) > > + > > +/** > > + * 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_PRIV: kill suid and sgid bits > > + */ > > +#define FUSE_WRITE_CACHE (1 << 0) > > +#define FUSE_WRITE_LOCKOWNER (1 << 1) > > +#define FUSE_WRITE_KILL_PRIV (1 << 2) > > + > > +/** > > + * 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) > > + > > +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, > > + > > + /* 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 unused; > > +}; > > + > > +struct fuse_create_in { > > + uint32_t flags; > > + uint32_t mode; > > + uint32_t umask; > > + uint32_t padding; > > +}; > > + > > +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; > > +}; > > + > > +struct fuse_setxattr_in { > > + uint32_t size; > > + uint32_t flags; > > +}; > > + > > +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_CLONE _IOR(229, 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; > > +}; > > + > > +#endif /* _LINUX_FUSE_H */ > > -- > > 2.23.0 -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
* Michael S. Tsirkin (mst@redhat.com) wrote: > On Mon, Oct 21, 2019 at 11:58:04AM +0100, Dr. David Alan Gilbert (git) wrote: > > From: "Dr. David Alan Gilbert" <dgilbert@redhat.com> > > > > Pull in fuse.h from the kernel; version 97f9a3c4eee55b0178b518ae7114a6a53372913d > > How about using some tag instead? Updated to v5.4-rc4 > > Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> > > --- > > contrib/virtiofsd/fuse_kernel.h | 858 ++++++++++++++++++++++++++++++++ > > 1 file changed, 858 insertions(+) > > create mode 100644 contrib/virtiofsd/fuse_kernel.h > > > > diff --git a/contrib/virtiofsd/fuse_kernel.h b/contrib/virtiofsd/fuse_kernel.h > > new file mode 100644 > > index 0000000000..802b0377a4 > > --- /dev/null > > +++ b/contrib/virtiofsd/fuse_kernel.h > > @@ -0,0 +1,858 @@ > > +/* 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: > > + * > > + * 7.9: > > + * - 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 > > + */ > > + > > +#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 31 > > + > > +/** 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 padding; > > +}; > > + > > +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) > > + > > +/** > > + * 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) > > + */ > > +#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) > > + > > +/** > > + * 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: map_alignment field is valid > > + */ > > +#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) > > + > > +/** > > + * 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_PRIV: kill suid and sgid bits > > + */ > > +#define FUSE_WRITE_CACHE (1 << 0) > > +#define FUSE_WRITE_LOCKOWNER (1 << 1) > > +#define FUSE_WRITE_KILL_PRIV (1 << 2) > > + > > +/** > > + * 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) > > + > > +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, > > + > > + /* 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 unused; > > +}; > > + > > +struct fuse_create_in { > > + uint32_t flags; > > + uint32_t mode; > > + uint32_t umask; > > + uint32_t padding; > > +}; > > + > > +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; > > +}; > > + > > +struct fuse_setxattr_in { > > + uint32_t size; > > + uint32_t flags; > > +}; > > + > > +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_CLONE _IOR(229, 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; > > +}; > > + > > +#endif /* _LINUX_FUSE_H */ > > -- > > 2.23.0 -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
diff --git a/contrib/virtiofsd/fuse_kernel.h b/contrib/virtiofsd/fuse_kernel.h new file mode 100644 index 0000000000..802b0377a4 --- /dev/null +++ b/contrib/virtiofsd/fuse_kernel.h @@ -0,0 +1,858 @@ +/* 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: + * + * 7.9: + * - 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 + */ + +#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 31 + +/** 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 padding; +}; + +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) + +/** + * 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) + */ +#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) + +/** + * 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: map_alignment field is valid + */ +#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) + +/** + * 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_PRIV: kill suid and sgid bits + */ +#define FUSE_WRITE_CACHE (1 << 0) +#define FUSE_WRITE_LOCKOWNER (1 << 1) +#define FUSE_WRITE_KILL_PRIV (1 << 2) + +/** + * 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) + +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, + + /* 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 unused; +}; + +struct fuse_create_in { + uint32_t flags; + uint32_t mode; + uint32_t umask; + uint32_t padding; +}; + +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; +}; + +struct fuse_setxattr_in { + uint32_t size; + uint32_t flags; +}; + +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_CLONE _IOR(229, 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; +}; + +#endif /* _LINUX_FUSE_H */