#![allow(clippy::identity_op)]
use std::convert::TryFrom;
use std::error;
use std::fmt;
pub const FUSE_KERNEL_VERSION: u32 = 7;
pub const FUSE_KERNEL_MINOR_VERSION: u32 = 29;
pub const FUSE_MIN_READ_BUFFER: u32 = 8192;
pub const FUSE_IOCTL_MAX_IOV: u32 = 256;
pub const FATTR_MODE: u32 = 1 << 0;
pub const FATTR_UID: u32 = 1 << 1;
pub const FATTR_GID: u32 = 1 << 2;
pub const FATTR_SIZE: u32 = 1 << 3;
pub const FATTR_ATIME: u32 = 1 << 4;
pub const FATTR_MTIME: u32 = 1 << 5;
pub const FATTR_FH: u32 = 1 << 6;
pub const FATTR_ATIME_NOW: u32 = 1 << 7;
pub const FATTR_MTIME_NOW: u32 = 1 << 8;
pub const FATTR_LOCKOWNER: u32 = 1 << 9;
pub const FATTR_CTIME: u32 = 1 << 10;
pub const FOPEN_DIRECT_IO: u32 = 1 << 0;
pub const FOPEN_KEEP_CACHE: u32 = 1 << 1;
pub const FOPEN_NONSEEKABLE: u32 = 1 << 2;
pub const FOPEN_CACHE_DIR: u32 = 1 << 3;
pub const FUSE_ASYNC_READ: u32 = 1;
pub const FUSE_POSIX_LOCKS: u32 = 1 << 1;
pub const FUSE_FILE_OPS: u32 = 1 << 2;
pub const FUSE_ATOMIC_O_TRUNC: u32 = 1 << 3;
pub const FUSE_EXPORT_SUPPORT: u32 = 1 << 4;
pub const FUSE_BIG_WRITES: u32 = 1 << 5;
pub const FUSE_DONT_MASK: u32 = 1 << 6;
pub const FUSE_SPLICE_WRITE: u32 = 1 << 7;
pub const FUSE_SPLICE_MOVE: u32 = 1 << 8;
pub const FUSE_SPLICE_READ: u32 = 1 << 9;
pub const FUSE_FLOCK_LOCKS: u32 = 1 << 10;
pub const FUSE_HAS_IOCTL_DIR: u32 = 1 << 11;
pub const FUSE_AUTO_INVAL_DATA: u32 = 1 << 12;
pub const FUSE_DO_READDIRPLUS: u32 = 1 << 13;
pub const FUSE_READDIRPLUS_AUTO: u32 = 1 << 14;
pub const FUSE_ASYNC_DIO: u32 = 1 << 15;
pub const FUSE_WRITEBACK_CACHE: u32 = 1 << 16;
pub const FUSE_NO_OPEN_SUPPORT: u32 = 1 << 17;
pub const FUSE_PARALLEL_DIROPS: u32 = 1 << 18;
pub const FUSE_HANDLE_KILLPRIV: u32 = 1 << 19;
pub const FUSE_POSIX_ACL: u32 = 1 << 20;
pub const FUSE_ABORT_ERROR: u32 = 1 << 21;
pub const FUSE_MAX_PAGES: u32 = 1 << 22;
pub const FUSE_CACHE_SYMLINKS: u32 = 1 << 23;
pub const FUSE_NO_OPENDIR_SUPPORT: u32 = 1 << 24;
pub const CUSE_UNRESTRICTED_IOCTL: u32 = 1 << 0;
pub const FUSE_RELEASE_FLUSH: u32 = 1 << 0;
pub const FUSE_RELEASE_FLOCK_UNLOCK: u32 = 1 << 1;
pub const FUSE_GETATTR_FH: u32 = 1;
pub const FUSE_LK_FLOCK: u32 = 1 << 0;
pub const FUSE_WRITE_CACHE: u32 = 1 << 0;
pub const FUSE_WRITE_LOCKOWNER: u32 = 1 << 1;
pub const FUSE_READ_LOCKOWNER: u32 = 1 << 1;
pub const FUSE_IOCTL_COMPAT: u32 = 1 << 0;
pub const FUSE_IOCTL_UNRESTRICTED: u32 = 1 << 1;
pub const FUSE_IOCTL_RETRY: u32 = 1 << 2;
pub const FUSE_IOCTL_32BIT: u32 = 1 << 3;
pub const FUSE_IOCTL_DIR: u32 = 1 << 4;
pub const FUSE_POLL_SCHEDULE_NOTIFY: u32 = 1 << 0;
const FUSE_FSYNC_FDATASYNC: u32 = 1 << 0;
pub const FUSE_COMPAT_ENTRY_OUT_SIZE: usize = 120;
pub const FUSE_COMPAT_ATTR_OUT_SIZE: usize = 96;
pub const FUSE_COMPAT_MKNOD_IN_SIZE: usize = 8;
pub const FUSE_COMPAT_WRITE_IN_SIZE: usize = 24;
pub const FUSE_COMPAT_STATFS_SIZE: usize = 48;
pub const FUSE_COMPAT_INIT_OUT_SIZE: usize = 8;
pub const FUSE_COMPAT_22_INIT_OUT_SIZE: usize = 24;
pub const CUSE_INIT_INFO_MAX: u32 = 4096;
#[cfg(target_os = "linux")]
pub const FUSE_DEV_IOC_CLONE: u32 = 0x_80_04_e5_00;
#[cfg(target_os = "freebsd")]
pub const FUSE_DEV_IOC_CLONE: u32 = 0x_40_04_e5_00;
#[derive(Default, Debug, Copy, Clone)]
#[repr(C)]
pub struct fuse_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,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_dirent {
pub ino: u64,
pub off: u64,
pub namelen: u32,
pub typ: u32,
pub name: [u8; 0],
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_direntplus {
pub entry_out: fuse_entry_out,
pub dirent: fuse_dirent,
}
#[derive(Debug, Default, Copy, Clone)]
#[repr(C)]
pub struct fuse_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; 6usize],
}
#[derive(Debug, Default, Copy, Clone)]
#[repr(C)]
pub struct fuse_file_lock {
pub start: u64,
pub end: u64,
pub typ: u32,
pub pid: u32,
}
macro_rules! define_opcode {
($(
$(#[$m:meta])*
$VARIANT:ident = $val:expr,
)*) => {
$(
#[doc(hidden)]
pub const $VARIANT: u32 = $val;
)*
#[derive(Debug, Copy, Clone, PartialEq, Hash)]
#[repr(u32)]
pub enum fuse_opcode {
$(
$(#[$m])*
$VARIANT = self::$VARIANT,
)*
}
impl TryFrom<u32> for fuse_opcode {
type Error = UnknownOpcode;
fn try_from(opcode: u32) -> Result<Self, Self::Error> {
match opcode {
$(
$val => Ok(Self::$VARIANT),
)*
opcode => Err(UnknownOpcode(opcode)),
}
}
}
};
}
define_opcode! {
FUSE_LOOKUP = 1,
FUSE_FORGET = 2,
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,
CUSE_INIT = 4096,
}
#[doc(hidden)]
#[derive(Debug)]
pub struct UnknownOpcode(u32);
impl fmt::Display for UnknownOpcode {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "unknown opcode: {}", self.0)
}
}
impl error::Error for UnknownOpcode {}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_in_header {
pub len: u32,
pub opcode: u32,
pub unique: u64,
pub nodeid: u64,
pub uid: u32,
pub gid: u32,
pub pid: u32,
pub padding: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_init_in {
pub major: u32,
pub minor: u32,
pub max_readahead: u32,
pub flags: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_forget_in {
pub nlookup: u64,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_getattr_in {
pub getattr_flags: u32,
pub dummy: u32,
pub fh: u64,
}
impl fuse_getattr_in {
pub fn fh(&self) -> Option<u64> {
if self.getattr_flags & FUSE_GETATTR_FH != 0 {
Some(self.fh)
} else {
None
}
}
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_setattr_in {
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,
}
impl fuse_setattr_in {
#[inline]
fn get<R>(&self, flag: u32, f: impl FnOnce(&Self) -> R) -> Option<R> {
if self.valid & flag != 0 {
Some(f(self))
} else {
None
}
}
pub fn fh(&self) -> Option<u64> {
self.get(FATTR_FH, |this| this.fh)
}
pub fn size(&self) -> Option<u64> {
self.get(FATTR_SIZE, |this| this.size)
}
pub fn lock_owner(&self) -> Option<u64> {
self.get(FATTR_LOCKOWNER, |this| this.lock_owner)
}
pub fn atime(&self) -> Option<(u64, u32, bool)> {
self.get(FATTR_ATIME, |this| {
(
this.atime,
this.atimensec,
this.valid & FATTR_ATIME_NOW != 0,
)
})
}
pub fn mtime(&self) -> Option<(u64, u32, bool)> {
self.get(FATTR_CTIME, |this| {
(
this.mtime,
this.mtimensec,
this.valid & FATTR_MTIME_NOW != 0,
)
})
}
pub fn ctime(&self) -> Option<(u64, u32)> {
self.get(FATTR_CTIME, |this| (this.ctime, this.ctimensec))
}
pub fn mode(&self) -> Option<u32> {
self.get(FATTR_MODE, |this| this.mode)
}
pub fn uid(&self) -> Option<u32> {
self.get(FATTR_UID, |this| this.uid)
}
pub fn gid(&self) -> Option<u32> {
self.get(FATTR_GID, |this| this.gid)
}
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_mknod_in {
pub mode: u32,
pub rdev: u32,
pub umask: u32,
pub padding: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_mkdir_in {
pub mode: u32,
pub umask: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_rename_in {
pub newdir: u64,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_link_in {
pub oldnodeid: u64,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_open_in {
pub flags: u32,
pub unused: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_read_in {
pub fh: u64,
pub offset: u64,
pub size: u32,
pub read_flags: u32,
pub lock_owner: u64,
pub flags: u32,
pub padding: u32,
}
impl fuse_read_in {
pub fn lock_owner(&self) -> Option<u64> {
if self.read_flags & FUSE_READ_LOCKOWNER != 0 {
Some(self.lock_owner)
} else {
None
}
}
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_write_in {
pub fh: u64,
pub offset: u64,
pub size: u32,
pub write_flags: u32,
pub lock_owner: u64,
pub flags: u32,
pub padding: u32,
}
impl fuse_write_in {
pub fn lock_owner(&self) -> Option<u64> {
if self.write_flags & FUSE_WRITE_LOCKOWNER != 0 {
Some(self.lock_owner)
} else {
None
}
}
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_flush_in {
pub fh: u64,
pub unused: u32,
pub padding: u32,
pub lock_owner: u64,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_release_in {
pub fh: u64,
pub flags: u32,
pub release_flags: u32,
pub lock_owner: u64,
}
impl fuse_release_in {
pub fn flush(&self) -> bool {
self.release_flags & FUSE_RELEASE_FLUSH != 0
}
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_fsync_in {
pub fh: u64,
pub fsync_flags: u32,
pub padding: u32,
}
impl fuse_fsync_in {
pub fn datasync(&self) -> bool {
self.fsync_flags & FUSE_FSYNC_FDATASYNC != 0
}
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_getxattr_in {
pub size: u32,
pub padding: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_setxattr_in {
pub size: u32,
pub flags: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_lk_in {
pub fh: u64,
pub owner: u64,
pub lk: fuse_file_lock,
pub lk_flags: u32,
pub padding: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_access_in {
pub mask: u32,
#[doc(hidden)]
pub padding: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_create_in {
pub flags: u32,
pub mode: u32,
pub umask: u32,
pub padding: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_bmap_in {
pub block: u64,
pub blocksize: u32,
pub padding: u32,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_out_header {
pub len: u32,
pub error: i32,
pub unique: u64,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_attr_out {
pub attr_valid: u64,
pub attr_valid_nsec: u32,
pub dummy: u32,
pub attr: fuse_attr,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_entry_out {
pub nodeid: u64,
pub generation: u64,
pub entry_valid: u64,
pub attr_valid: u64,
pub entry_valid_nsec: u32,
pub attr_valid_nsec: u32,
pub attr: fuse_attr,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_init_out {
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 max_pages: u16,
pub padding: u16,
pub unused: [u32; 8],
}
impl Default for fuse_init_out {
fn default() -> Self {
Self {
major: FUSE_KERNEL_VERSION,
minor: FUSE_KERNEL_MINOR_VERSION,
max_readahead: 0,
flags: 0,
max_background: 0,
congestion_threshold: 0,
max_write: 0,
time_gran: 0,
max_pages: 0,
padding: 0,
unused: [0; 8],
}
}
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_getxattr_out {
pub size: u32,
pub padding: u32,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_open_out {
pub fh: u64,
pub open_flags: u32,
pub padding: u32,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_write_out {
pub size: u32,
pub padding: u32,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_statfs_out {
pub st: fuse_kstatfs,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_lk_out {
pub lk: fuse_file_lock,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_bmap_out {
pub block: u64,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_ioctl_in {
pub fh: u64,
pub flags: u32,
pub cmd: u32,
pub arg: u64,
pub in_size: u32,
pub out_size: u32,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_ioctl_out {
pub result: i32,
pub flags: u32,
pub in_iovs: u32,
pub out_iovs: u32,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_ioctl_iovec {
pub base: u64,
pub len: u64,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_poll_in {
pub fh: u64,
pub kh: u64,
pub flags: u32,
pub events: u32,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_poll_out {
pub revents: u32,
#[doc(hidden)]
pub padding: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_interrupt_in {
pub unique: u64,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_fallocate_in {
pub fh: u64,
pub offset: u64,
pub length: u64,
pub mode: u32,
pub padding: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_batch_forget_in {
pub count: u32,
pub dummy: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_forget_one {
pub nodeid: u64,
pub nlookup: u64,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_rename2_in {
pub newdir: u64,
pub flags: u32,
pub padding: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_lseek_in {
pub fh: u64,
pub offset: u64,
pub whence: u32,
pub padding: u32,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_lseek_out {
pub offset: u64,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_copy_file_range_in {
pub fh_in: u64,
pub off_in: u64,
pub nodeid_out: u64,
pub fh_out: u64,
pub off_out: u64,
pub len: u64,
pub flags: u64,
}
macro_rules! define_notify_code {
($(
$(#[$m:meta])*
$VARIANT:ident = $val:expr,
)*) => {
$(
#[doc(hidden)]
pub const $VARIANT: u32 = $val;
)*
#[derive(Debug, Copy, Clone, PartialEq, Hash)]
#[repr(u32)]
pub enum fuse_notify_code {
$(
$(#[$m])*
$VARIANT = self::$VARIANT,
)*
}
};
}
define_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 = 7,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_notify_poll_wakeup_out {
pub kh: u64,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_notify_inval_inode_out {
pub ino: u64,
pub off: i64,
pub len: i64,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_notify_inval_entry_out {
pub parent: u64,
pub namelen: u32,
pub padding: u32,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_notify_delete_out {
pub parent: u64,
pub child: u64,
pub namelen: u32,
pub padding: u32,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_notify_store_out {
pub nodeid: u64,
pub offset: u64,
pub size: u32,
pub padding: u32,
}
#[derive(Debug, Default)]
#[repr(C)]
pub struct fuse_notify_retrieve_out {
pub notify_unique: u64,
pub nodeid: u64,
pub offset: u64,
pub size: u32,
pub padding: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct fuse_notify_retrieve_in {
pub dummy1: u64,
pub offset: u64,
pub size: u32,
pub dummy2: u32,
pub dummy3: u64,
pub dummy4: u64,
}
#[derive(Debug)]
#[repr(C)]
pub struct cuse_init_in {
pub major: u32,
pub minor: u32,
pub unused: u32,
pub flags: u32,
}
#[derive(Debug)]
#[repr(C)]
pub struct cuse_init_out {
pub major: u32,
pub minor: u32,
pub unused: u32,
pub flags: u32,
pub max_read: u32,
pub max_write: u32,
pub dev_major: u32,
pub dev_minor: u32,
pub spare: [u32; 10],
}