cloud-hypervisor/vhost_user_fs/src/fuse.rs

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// Copyright 2019 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
use std::mem;
use bitflags::bitflags;
use libc;
use vm_memory::ByteValued;
/// Version number of this interface.
pub const KERNEL_VERSION: u32 = 7;
/// Minor version number of this interface.
pub const KERNEL_MINOR_VERSION: u32 = 27;
/// The ID of the inode corresponding to the root directory of the file system.
pub const ROOT_ID: u64 = 1;
// Bitmasks for `fuse_setattr_in.valid`.
const FATTR_MODE: u32 = 1;
const FATTR_UID: u32 = 2;
const FATTR_GID: u32 = 4;
const FATTR_SIZE: u32 = 8;
const FATTR_ATIME: u32 = 16;
const FATTR_MTIME: u32 = 32;
pub const FATTR_FH: u32 = 64;
const FATTR_ATIME_NOW: u32 = 128;
const FATTR_MTIME_NOW: u32 = 256;
pub const FATTR_LOCKOWNER: u32 = 512;
const FATTR_CTIME: u32 = 1024;
bitflags! {
pub struct SetattrValid: u32 {
const MODE = FATTR_MODE;
const UID = FATTR_UID;
const GID = FATTR_GID;
const SIZE = FATTR_SIZE;
const ATIME = FATTR_ATIME;
const MTIME = FATTR_MTIME;
const ATIME_NOW = FATTR_ATIME_NOW;
const MTIME_NOW = FATTR_MTIME_NOW;
const CTIME = FATTR_CTIME;
}
}
// Flags returned by the OPEN request.
/// Bypass page cache for this open file.
const FOPEN_DIRECT_IO: u32 = 1;
/// Don't invalidate the data cache on open.
const FOPEN_KEEP_CACHE: u32 = 2;
/// The file is not seekable.
const FOPEN_NONSEEKABLE: u32 = 4;
bitflags! {
/// Options controlling the behavior of files opened by the server in response
/// to an open or create request.
pub struct OpenOptions: u32 {
const DIRECT_IO = FOPEN_DIRECT_IO;
const KEEP_CACHE = FOPEN_KEEP_CACHE;
const NONSEEKABLE = FOPEN_NONSEEKABLE;
}
}
// INIT request/reply flags.
/// Asynchronous read requests.
const ASYNC_READ: u32 = 1;
/// Remote locking for POSIX file locks.
const POSIX_LOCKS: u32 = 2;
/// Kernel sends file handle for fstat, etc... (not yet supported).
const FILE_OPS: u32 = 4;
/// Handles the O_TRUNC open flag in the filesystem.
const ATOMIC_O_TRUNC: u32 = 8;
/// FileSystem handles lookups of "." and "..".
const EXPORT_SUPPORT: u32 = 16;
/// FileSystem can handle write size larger than 4kB.
const BIG_WRITES: u32 = 32;
/// Don't apply umask to file mode on create operations.
const DONT_MASK: u32 = 64;
/// Kernel supports splice write on the device.
const SPLICE_WRITE: u32 = 128;
/// Kernel supports splice move on the device.
const SPLICE_MOVE: u32 = 256;
/// Kernel supports splice read on the device.
const SPLICE_READ: u32 = 512;
/// Remote locking for BSD style file locks.
const FLOCK_LOCKS: u32 = 1024;
/// Kernel supports ioctl on directories.
const HAS_IOCTL_DIR: u32 = 2048;
/// Automatically invalidate cached pages.
const AUTO_INVAL_DATA: u32 = 4096;
/// Do READDIRPLUS (READDIR+LOOKUP in one).
const DO_READDIRPLUS: u32 = 8192;
/// Adaptive readdirplus.
const READDIRPLUS_AUTO: u32 = 16384;
/// Asynchronous direct I/O submission.
const ASYNC_DIO: u32 = 32768;
/// Use writeback cache for buffered writes.
const WRITEBACK_CACHE: u32 = 65536;
/// Kernel supports zero-message opens.
const NO_OPEN_SUPPORT: u32 = 131_072;
/// Allow parallel lookups and readdir.
const PARALLEL_DIROPS: u32 = 262_144;
/// Fs handles killing suid/sgid/cap on write/chown/trunc.
const HANDLE_KILLPRIV: u32 = 524_288;
/// FileSystem supports posix acls.
const POSIX_ACL: u32 = 1_048_576;
bitflags! {
/// A bitfield passed in as a parameter to and returned from the `init` method of the
/// `FileSystem` trait.
pub struct FsOptions: u32 {
/// Indicates that the filesystem supports asynchronous read requests.
///
/// If this capability is not requested/available, the kernel will ensure that there is at
/// most one pending read request per file-handle at any time, and will attempt to order
/// read requests by increasing offset.
///
/// This feature is enabled by default when supported by the kernel.
const ASYNC_READ = ASYNC_READ;
/// Indicates that the filesystem supports "remote" locking.
///
/// This feature is not enabled by default and should only be set if the filesystem
/// implements the `getlk` and `setlk` methods of the `FileSystem` trait.
const POSIX_LOCKS = POSIX_LOCKS;
/// Kernel sends file handle for fstat, etc... (not yet supported).
const FILE_OPS = FILE_OPS;
/// Indicates that the filesystem supports the `O_TRUNC` open flag. If disabled, and an
/// application specifies `O_TRUNC`, fuse first calls `setattr` to truncate the file and
/// then calls `open` with `O_TRUNC` filtered out.
///
/// This feature is enabled by default when supported by the kernel.
const ATOMIC_O_TRUNC = ATOMIC_O_TRUNC;
/// Indicates that the filesystem supports lookups of "." and "..".
///
/// This feature is disabled by default.
const EXPORT_SUPPORT = EXPORT_SUPPORT;
/// FileSystem can handle write size larger than 4kB.
const BIG_WRITES = BIG_WRITES;
/// Indicates that the kernel should not apply the umask to the file mode on create
/// operations.
///
/// This feature is disabled by default.
const DONT_MASK = DONT_MASK;
/// Indicates that the server should try to use `splice(2)` when writing to the fuse device.
/// This may improve performance.
///
/// This feature is not currently supported.
const SPLICE_WRITE = SPLICE_WRITE;
/// Indicates that the server should try to move pages instead of copying when writing to /
/// reading from the fuse device. This may improve performance.
///
/// This feature is not currently supported.
const SPLICE_MOVE = SPLICE_MOVE;
/// Indicates that the server should try to use `splice(2)` when reading from the fuse
/// device. This may improve performance.
///
/// This feature is not currently supported.
const SPLICE_READ = SPLICE_READ;
/// If set, then calls to `flock` will be emulated using POSIX locks and must
/// then be handled by the filesystem's `setlock()` handler.
///
/// If not set, `flock` calls will be handled by the FUSE kernel module internally (so any
/// access that does not go through the kernel cannot be taken into account).
///
/// This feature is disabled by default.
const FLOCK_LOCKS = FLOCK_LOCKS;
/// Indicates that the filesystem supports ioctl's on directories.
///
/// This feature is enabled by default when supported by the kernel.
const HAS_IOCTL_DIR = HAS_IOCTL_DIR;
/// Traditionally, while a file is open the FUSE kernel module only asks the filesystem for
/// an update of the file's attributes when a client attempts to read beyond EOF. This is
/// unsuitable for e.g. network filesystems, where the file contents may change without the
/// kernel knowing about it.
///
/// If this flag is set, FUSE will check the validity of the attributes on every read. If
/// the attributes are no longer valid (i.e., if the *attribute* timeout has expired) then
/// FUSE will first send another `getattr` request. If the new mtime differs from the
/// previous value, any cached file *contents* will be invalidated as well.
///
/// This flag should always be set when available. If all file changes go through the
/// kernel, *attribute* validity should be set to a very large number to avoid unnecessary
/// `getattr()` calls.
///
/// This feature is enabled by default when supported by the kernel.
const AUTO_INVAL_DATA = AUTO_INVAL_DATA;
/// Indicates that the filesystem supports readdirplus.
///
/// The feature is not enabled by default and should only be set if the filesystem
/// implements the `readdirplus` method of the `FileSystem` trait.
const DO_READDIRPLUS = DO_READDIRPLUS;
/// Indicates that the filesystem supports adaptive readdirplus.
///
/// If `DO_READDIRPLUS` is not set, this flag has no effect.
///
/// If `DO_READDIRPLUS` is set and this flag is not set, the kernel will always issue
/// `readdirplus()` requests to retrieve directory contents.
///
/// If `DO_READDIRPLUS` is set and this flag is set, the kernel will issue both `readdir()`
/// and `readdirplus()` requests, depending on how much information is expected to be
/// required.
///
/// This feature is not enabled by default and should only be set if the file system
/// implements both the `readdir` and `readdirplus` methods of the `FileSystem` trait.
const READDIRPLUS_AUTO = READDIRPLUS_AUTO;
/// Indicates that the filesystem supports asynchronous direct I/O submission.
///
/// If this capability is not requested/available, the kernel will ensure that there is at
/// most one pending read and one pending write request per direct I/O file-handle at any
/// time.
///
/// This feature is enabled by default when supported by the kernel.
const ASYNC_DIO = ASYNC_DIO;
/// Indicates that writeback caching should be enabled. This means that individual write
/// request may be buffered and merged in the kernel before they are sent to the file
/// system.
///
/// This feature is disabled by default.
const WRITEBACK_CACHE = WRITEBACK_CACHE;
/// Indicates support for zero-message opens. If this flag is set in the `capable` parameter
/// of the `init` trait method, then the file system may return `ENOSYS` from the open() handler
/// to indicate success. Further attempts to open files will be handled in the kernel. (If
/// this flag is not set, returning ENOSYS will be treated as an error and signaled to the
/// caller).
///
/// Setting (or not setting) the field in the `FsOptions` returned from the `init` method
/// has no effect.
const ZERO_MESSAGE_OPEN = NO_OPEN_SUPPORT;
/// Indicates support for parallel directory operations. If this flag is unset, the FUSE
/// kernel module will ensure that lookup() and readdir() requests are never issued
/// concurrently for the same directory.
///
/// This feature is enabled by default when supported by the kernel.
const PARALLEL_DIROPS = PARALLEL_DIROPS;
/// Indicates that the file system is responsible for unsetting setuid and setgid bits when a
/// file is written, truncated, or its owner is changed.
///
/// This feature is enabled by default when supported by the kernel.
const HANDLE_KILLPRIV = HANDLE_KILLPRIV;
/// Indicates support for POSIX ACLs.
///
/// If this feature is enabled, the kernel will cache and have responsibility for enforcing
/// ACLs. ACL will be stored as xattrs and passed to userspace, which is responsible for
/// updating the ACLs in the filesystem, keeping the file mode in sync with the ACL, and
/// ensuring inheritance of default ACLs when new filesystem nodes are created. Note that
/// this requires that the file system is able to parse and interpret the xattr
/// representation of ACLs.
///
/// Enabling this feature implicitly turns on the `default_permissions` mount option (even
/// if it was not passed to mount(2)).
///
/// This feature is disabled by default.
const POSIX_ACL = POSIX_ACL;
}
}
// Release flags.
pub const RELEASE_FLUSH: u32 = 1;
pub const RELEASE_FLOCK_UNLOCK: u32 = 2;
// Getattr flags.
pub const GETATTR_FH: u32 = 1;
// Lock flags.
pub const LK_FLOCK: u32 = 1;
// Write flags.
/// Delayed write from page cache, file handle is guessed.
pub const WRITE_CACHE: u32 = 1;
/// `lock_owner` field is valid.
pub const WRITE_LOCKOWNER: u32 = 2;
// Read flags.
pub const READ_LOCKOWNER: u32 = 2;
// Ioctl flags.
/// 32bit compat ioctl on 64bit machine
const IOCTL_COMPAT: u32 = 1;
/// Not restricted to well-formed ioctls, retry allowed
const IOCTL_UNRESTRICTED: u32 = 2;
/// Retry with new iovecs
const IOCTL_RETRY: u32 = 4;
/// 32bit ioctl
const IOCTL_32BIT: u32 = 8;
/// Is a directory
const IOCTL_DIR: u32 = 16;
/// Maximum of in_iovecs + out_iovecs
const IOCTL_MAX_IOV: u32 = 256;
bitflags! {
pub struct IoctlFlags: u32 {
/// 32bit compat ioctl on 64bit machine
const IOCTL_COMPAT = IOCTL_COMPAT;
/// Not restricted to well-formed ioctls, retry allowed
const IOCTL_UNRESTRICTED = IOCTL_UNRESTRICTED;
/// Retry with new iovecs
const IOCTL_RETRY = IOCTL_RETRY;
/// 32bit ioctl
const IOCTL_32BIT = IOCTL_32BIT;
/// Is a directory
const IOCTL_DIR = IOCTL_DIR;
/// Maximum of in_iovecs + out_iovecs
const IOCTL_MAX_IOV = IOCTL_MAX_IOV;
}
}
/// Request poll notify.
pub const POLL_SCHEDULE_NOTIFY: u32 = 1;
/// The read buffer is required to be at least 8k, but may be much larger.
pub const FUSE_MIN_READ_BUFFER: u32 = 8192;
pub const FUSE_COMPAT_ENTRY_OUT_SIZE: u32 = 120;
pub const FUSE_COMPAT_ATTR_OUT_SIZE: u32 = 96;
pub const FUSE_COMPAT_MKNOD_IN_SIZE: u32 = 8;
pub const FUSE_COMPAT_WRITE_IN_SIZE: u32 = 24;
pub const FUSE_COMPAT_STATFS_SIZE: u32 = 48;
pub const FUSE_COMPAT_INIT_OUT_SIZE: u32 = 8;
pub const FUSE_COMPAT_22_INIT_OUT_SIZE: u32 = 24;
// Message definitions follow. It is safe to implement ByteValued for all of these
// because they are POD types.
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct Attr {
pub ino: u64,
pub size: u64,
pub blocks: u64,
pub atime: u64,
pub mtime: u64,
pub ctime: u64,
pub atimensec: u32,
pub mtimensec: u32,
pub ctimensec: u32,
pub mode: u32,
pub nlink: u32,
pub uid: u32,
pub gid: u32,
pub rdev: u32,
pub blksize: u32,
pub padding: u32,
}
unsafe impl ByteValued for Attr {}
impl From<libc::stat64> for Attr {
fn from(st: libc::stat64) -> Attr {
Attr {
ino: st.st_ino,
size: st.st_size as u64,
blocks: st.st_blocks as u64,
atime: st.st_atime as u64,
mtime: st.st_mtime as u64,
ctime: st.st_ctime as u64,
atimensec: st.st_atime_nsec as u32,
mtimensec: st.st_mtime_nsec as u32,
ctimensec: st.st_ctime_nsec as u32,
mode: st.st_mode,
nlink: st.st_nlink as u32,
uid: st.st_uid,
gid: st.st_gid,
rdev: st.st_rdev as u32,
blksize: st.st_blksize as u32,
..Default::default()
}
}
}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct Kstatfs {
pub blocks: u64,
pub bfree: u64,
pub bavail: u64,
pub files: u64,
pub ffree: u64,
pub bsize: u32,
pub namelen: u32,
pub frsize: u32,
pub padding: u32,
pub spare: [u32; 6],
}
unsafe impl ByteValued for Kstatfs {}
impl From<libc::statvfs64> for Kstatfs {
fn from(st: libc::statvfs64) -> Self {
Kstatfs {
blocks: st.f_blocks,
bfree: st.f_bfree,
bavail: st.f_bavail,
files: st.f_files,
ffree: st.f_ffree,
bsize: st.f_bsize as u32,
namelen: st.f_namemax as u32,
frsize: st.f_frsize as u32,
..Default::default()
}
}
}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct FileLock {
pub start: u64,
pub end: u64,
pub type_: u32,
pub pid: u32, /* tgid */
}
unsafe impl ByteValued for FileLock {}
#[repr(u32)]
#[derive(Debug, Copy, Clone)]
pub enum Opcode {
Lookup = 1,
Forget = 2, /* No Reply */
Getattr = 3,
Setattr = 4,
Readlink = 5,
Symlink = 6,
Mknod = 8,
Mkdir = 9,
Unlink = 10,
Rmdir = 11,
Rename = 12,
Link = 13,
Open = 14,
Read = 15,
Write = 16,
Statfs = 17,
Release = 18,
Fsync = 20,
Setxattr = 21,
Getxattr = 22,
Listxattr = 23,
Removexattr = 24,
Flush = 25,
Init = 26,
Opendir = 27,
Readdir = 28,
Releasedir = 29,
Fsyncdir = 30,
Getlk = 31,
Setlk = 32,
Setlkw = 33,
Access = 34,
Create = 35,
Interrupt = 36,
Bmap = 37,
Destroy = 38,
Ioctl = 39,
Poll = 40,
NotifyReply = 41,
BatchForget = 42,
Fallocate = 43,
Readdirplus = 44,
Rename2 = 45,
Lseek = 46,
CopyFileRange = 47,
SetupMapping = 48,
RemoveMapping = 49,
}
#[repr(u32)]
#[derive(Debug, Copy, Clone)]
pub enum NotifyOpcode {
Poll = 1,
InvalInode = 2,
InvalEntry = 3,
Store = 4,
Retrieve = 5,
Delete = 6,
CodeMax = 7,
}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct EntryOut {
pub nodeid: u64, /* Inode ID */
pub generation: u64, /* Inode generation: nodeid:gen must be unique for the fs's lifetime */
pub entry_valid: u64, /* Cache timeout for the name */
pub attr_valid: u64, /* Cache timeout for the attributes */
pub entry_valid_nsec: u32,
pub attr_valid_nsec: u32,
pub attr: Attr,
}
unsafe impl ByteValued for EntryOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct ForgetIn {
pub nlookup: u64,
}
unsafe impl ByteValued for ForgetIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct ForgetOne {
pub nodeid: u64,
pub nlookup: u64,
}
unsafe impl ByteValued for ForgetOne {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct BatchForgetIn {
pub count: u32,
pub dummy: u32,
}
unsafe impl ByteValued for BatchForgetIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct GetattrIn {
pub flags: u32,
pub dummy: u32,
pub fh: u64,
}
unsafe impl ByteValued for GetattrIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct AttrOut {
pub attr_valid: u64, /* Cache timeout for the attributes */
pub attr_valid_nsec: u32,
pub dummy: u32,
pub attr: Attr,
}
unsafe impl ByteValued for AttrOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct MknodIn {
pub mode: u32,
pub rdev: u32,
pub umask: u32,
pub padding: u32,
}
unsafe impl ByteValued for MknodIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct MkdirIn {
pub mode: u32,
pub umask: u32,
}
unsafe impl ByteValued for MkdirIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct RenameIn {
pub newdir: u64,
}
unsafe impl ByteValued for RenameIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct Rename2In {
pub newdir: u64,
pub flags: u32,
pub padding: u32,
}
unsafe impl ByteValued for Rename2In {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct LinkIn {
pub oldnodeid: u64,
}
unsafe impl ByteValued for LinkIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct SetattrIn {
pub valid: u32,
pub padding: u32,
pub fh: u64,
pub size: u64,
pub lock_owner: u64,
pub atime: u64,
pub mtime: u64,
pub ctime: u64,
pub atimensec: u32,
pub mtimensec: u32,
pub ctimensec: u32,
pub mode: u32,
pub unused4: u32,
pub uid: u32,
pub gid: u32,
pub unused5: u32,
}
unsafe impl ByteValued for SetattrIn {}
impl Into<libc::stat64> for SetattrIn {
fn into(self) -> libc::stat64 {
// Safe because we are zero-initializing a struct with only POD fields.
let mut out: libc::stat64 = unsafe { mem::zeroed() };
out.st_mode = self.mode;
out.st_uid = self.uid;
out.st_gid = self.gid;
out.st_size = self.size as i64;
out.st_atime = self.atime as i64;
out.st_mtime = self.mtime as i64;
out.st_ctime = self.ctime as i64;
out.st_atime_nsec = i64::from(self.atimensec);
out.st_mtime_nsec = i64::from(self.mtimensec);
out.st_ctime_nsec = i64::from(self.ctimensec);
out
}
}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct OpenIn {
pub flags: u32,
pub unused: u32,
}
unsafe impl ByteValued for OpenIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct CreateIn {
pub flags: u32,
pub mode: u32,
pub umask: u32,
pub padding: u32,
}
unsafe impl ByteValued for CreateIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct OpenOut {
pub fh: u64,
pub open_flags: u32,
pub padding: u32,
}
unsafe impl ByteValued for OpenOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct ReleaseIn {
pub fh: u64,
pub flags: u32,
pub release_flags: u32,
pub lock_owner: u64,
}
unsafe impl ByteValued for ReleaseIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct FlushIn {
pub fh: u64,
pub unused: u32,
pub padding: u32,
pub lock_owner: u64,
}
unsafe impl ByteValued for FlushIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct ReadIn {
pub fh: u64,
pub offset: u64,
pub size: u32,
pub read_flags: u32,
pub lock_owner: u64,
pub flags: u32,
pub padding: u32,
}
unsafe impl ByteValued for ReadIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct WriteIn {
pub fh: u64,
pub offset: u64,
pub size: u32,
pub write_flags: u32,
pub lock_owner: u64,
pub flags: u32,
pub padding: u32,
}
unsafe impl ByteValued for WriteIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct WriteOut {
pub size: u32,
pub padding: u32,
}
unsafe impl ByteValued for WriteOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct StatfsOut {
pub st: Kstatfs,
}
unsafe impl ByteValued for StatfsOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct FsyncIn {
pub fh: u64,
pub fsync_flags: u32,
pub padding: u32,
}
unsafe impl ByteValued for FsyncIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct SetxattrIn {
pub size: u32,
pub flags: u32,
}
unsafe impl ByteValued for SetxattrIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct GetxattrIn {
pub size: u32,
pub padding: u32,
}
unsafe impl ByteValued for GetxattrIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct GetxattrOut {
pub size: u32,
pub padding: u32,
}
unsafe impl ByteValued for GetxattrOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct LkIn {
pub fh: u64,
pub owner: u64,
pub lk: FileLock,
pub lk_flags: u32,
pub padding: u32,
}
unsafe impl ByteValued for LkIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct LkOut {
pub lk: FileLock,
}
unsafe impl ByteValued for LkOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct AccessIn {
pub mask: u32,
pub padding: u32,
}
unsafe impl ByteValued for AccessIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct InitIn {
pub major: u32,
pub minor: u32,
pub max_readahead: u32,
pub flags: u32,
}
unsafe impl ByteValued for InitIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct InitOut {
pub major: u32,
pub minor: u32,
pub max_readahead: u32,
pub flags: u32,
pub max_background: u16,
pub congestion_threshold: u16,
pub max_write: u32,
pub time_gran: u32,
pub unused: [u32; 9],
}
unsafe impl ByteValued for InitOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct InterruptIn {
pub unique: u64,
}
unsafe impl ByteValued for InterruptIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct BmapIn {
pub block: u64,
pub blocksize: u32,
pub padding: u32,
}
unsafe impl ByteValued for BmapIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct BmapOut {
pub block: u64,
}
unsafe impl ByteValued for BmapOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct IoctlIn {
pub fh: u64,
pub flags: u32,
pub cmd: u32,
pub arg: u64,
pub in_size: u32,
pub out_size: u32,
}
unsafe impl ByteValued for IoctlIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct IoctlIovec {
pub base: u64,
pub len: u64,
}
unsafe impl ByteValued for IoctlIovec {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct IoctlOut {
pub result: i32,
pub flags: u32,
pub in_iovs: u32,
pub out_iovs: u32,
}
unsafe impl ByteValued for IoctlOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct PollIn {
pub fh: u64,
pub kh: u64,
pub flags: u32,
pub events: u32,
}
unsafe impl ByteValued for PollIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct PollOut {
pub revents: u32,
pub padding: u32,
}
unsafe impl ByteValued for PollOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct NotifyPollWakeupOut {
pub kh: u64,
}
unsafe impl ByteValued for NotifyPollWakeupOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct FallocateIn {
pub fh: u64,
pub offset: u64,
pub length: u64,
pub mode: u32,
pub padding: u32,
}
unsafe impl ByteValued for FallocateIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct InHeader {
pub len: u32,
pub opcode: u32,
pub unique: u64,
pub nodeid: u64,
pub uid: u32,
pub gid: u32,
pub pid: u32,
pub padding: u32,
}
unsafe impl ByteValued for InHeader {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct OutHeader {
pub len: u32,
pub error: i32,
pub unique: u64,
}
unsafe impl ByteValued for OutHeader {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct Dirent {
pub ino: u64,
pub off: u64,
pub namelen: u32,
pub type_: u32,
// char name[];
}
unsafe impl ByteValued for Dirent {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct Direntplus {
pub entry_out: EntryOut,
pub dirent: Dirent,
}
unsafe impl ByteValued for Direntplus {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct NotifyInvalInodeOut {
pub ino: u64,
pub off: i64,
pub len: i64,
}
unsafe impl ByteValued for NotifyInvalInodeOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct NotifyInvalEntryOut {
pub parent: u64,
pub namelen: u32,
pub padding: u32,
}
unsafe impl ByteValued for NotifyInvalEntryOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct NotifyDeleteOut {
pub parent: u64,
pub child: u64,
pub namelen: u32,
pub padding: u32,
}
unsafe impl ByteValued for NotifyDeleteOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct NotifyStoreOut {
pub nodeid: u64,
pub offset: u64,
pub size: u32,
pub padding: u32,
}
unsafe impl ByteValued for NotifyStoreOut {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct Notify_Retrieve_Out {
pub notify_unique: u64,
pub nodeid: u64,
pub offset: u64,
pub size: u32,
pub padding: u32,
}
unsafe impl ByteValued for Notify_Retrieve_Out {}
/* Matches the size of fuse_write_in */
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct NotifyRetrieveIn {
pub dummy1: u64,
pub offset: u64,
pub size: u32,
pub dummy2: u32,
pub dummy3: u64,
pub dummy4: u64,
}
unsafe impl ByteValued for NotifyRetrieveIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct LseekIn {
pub fh: u64,
pub offset: u64,
pub whence: u32,
pub padding: u32,
}
unsafe impl ByteValued for LseekIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct LseekOut {
pub offset: u64,
}
unsafe impl ByteValued for LseekOut {}
bitflags! {
pub struct SetupmappingFlags: u64 {
const WRITE = 0x1;
const READ = 0x2;
}
}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct SetupmappingIn {
pub fh: u64,
pub foffset: u64,
pub len: u64,
pub flags: u64,
pub moffset: u64,
}
unsafe impl ByteValued for SetupmappingIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct RemovemappingIn {
pub count: u32,
}
unsafe impl ByteValued for RemovemappingIn {}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone)]
pub struct RemovemappingOne {
pub moffset: u64,
pub len: u64,
}
unsafe impl ByteValued for RemovemappingOne {}