moved FUSE impl into separate file, more work on inodes

This commit is contained in:
Moritz Gmeiner 2025-07-29 20:33:36 +02:00
commit 372aa34022
5 changed files with 686 additions and 540 deletions

View file

@ -1,14 +1,11 @@
mod fuse;
mod inode;
use std::cell::RefCell;
use std::collections::BTreeMap;
use std::ffi::c_int;
use std::rc::Rc;
use fat_bits::{FatFs, SliceLike};
use fuser::Filesystem;
use libc::{ENOSYS, EPERM};
use log::{debug, warn};
use crate::inode::Inode;
@ -19,6 +16,8 @@ pub struct FatFuse {
uid: u32,
gid: u32,
next_fd: u32,
inode_table: BTreeMap<u64, Inode>,
}
@ -33,544 +32,16 @@ impl FatFuse {
fat_fs,
uid,
gid,
next_fd: 0,
inode_table: BTreeMap::new(),
})
}
}
impl Filesystem for FatFuse {
fn init(
&mut self,
_req: &fuser::Request<'_>,
_config: &mut fuser::KernelConfig,
) -> Result<(), c_int> {
Ok(())
fn get_inode(&self, ino: u64) -> Option<&Inode> {
self.inode_table.get(&ino)
}
fn destroy(&mut self) {}
fn lookup(
&mut self,
_req: &fuser::Request<'_>,
parent: u64,
name: &std::ffi::OsStr,
reply: fuser::ReplyEntry,
) {
warn!("[Not Implemented] lookup(parent: {:#x?}, name {:?})", parent, name);
reply.error(ENOSYS);
}
fn forget(&mut self, _req: &fuser::Request<'_>, _ino: u64, _nlookup: u64) {}
fn getattr(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: Option<u64>,
reply: fuser::ReplyAttr,
) {
warn!("[Not Implemented] getattr(ino: {:#x?}, fh: {:#x?})", ino, fh);
reply.error(ENOSYS);
}
fn setattr(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
mode: Option<u32>,
uid: Option<u32>,
gid: Option<u32>,
size: Option<u64>,
_atime: Option<fuser::TimeOrNow>,
_mtime: Option<fuser::TimeOrNow>,
_ctime: Option<std::time::SystemTime>,
fh: Option<u64>,
_crtime: Option<std::time::SystemTime>,
_chgtime: Option<std::time::SystemTime>,
_bkuptime: Option<std::time::SystemTime>,
flags: Option<u32>,
reply: fuser::ReplyAttr,
) {
debug!(
"[Not Implemented] setattr(ino: {:#x?}, mode: {:?}, uid: {:?}, \
gid: {:?}, size: {:?}, fh: {:?}, flags: {:?})",
ino, mode, uid, gid, size, fh, flags
);
reply.error(ENOSYS);
}
fn readlink(&mut self, _req: &fuser::Request<'_>, ino: u64, reply: fuser::ReplyData) {
debug!("[Not Implemented] readlink(ino: {:#x?})", ino);
reply.error(ENOSYS);
}
fn mknod(
&mut self,
_req: &fuser::Request<'_>,
parent: u64,
name: &std::ffi::OsStr,
mode: u32,
umask: u32,
rdev: u32,
reply: fuser::ReplyEntry,
) {
debug!(
"[Not Implemented] mknod(parent: {:#x?}, name: {:?}, mode: {}, \
umask: {:#x?}, rdev: {})",
parent, name, mode, umask, rdev
);
reply.error(ENOSYS);
}
fn mkdir(
&mut self,
_req: &fuser::Request<'_>,
parent: u64,
name: &std::ffi::OsStr,
mode: u32,
umask: u32,
reply: fuser::ReplyEntry,
) {
debug!(
"[Not Implemented] mkdir(parent: {:#x?}, name: {:?}, mode: {}, umask: {:#x?})",
parent, name, mode, umask
);
reply.error(ENOSYS);
}
fn unlink(
&mut self,
_req: &fuser::Request<'_>,
parent: u64,
name: &std::ffi::OsStr,
reply: fuser::ReplyEmpty,
) {
debug!("[Not Implemented] unlink(parent: {:#x?}, name: {:?})", parent, name,);
reply.error(ENOSYS);
}
fn rmdir(
&mut self,
_req: &fuser::Request<'_>,
parent: u64,
name: &std::ffi::OsStr,
reply: fuser::ReplyEmpty,
) {
debug!("[Not Implemented] rmdir(parent: {:#x?}, name: {:?})", parent, name,);
reply.error(ENOSYS);
}
fn symlink(
&mut self,
_req: &fuser::Request<'_>,
parent: u64,
link_name: &std::ffi::OsStr,
target: &std::path::Path,
reply: fuser::ReplyEntry,
) {
debug!(
"[Not Implemented] symlink(parent: {:#x?}, link_name: {:?}, target: {:?})",
parent, link_name, target,
);
reply.error(EPERM);
}
fn rename(
&mut self,
_req: &fuser::Request<'_>,
parent: u64,
name: &std::ffi::OsStr,
newparent: u64,
newname: &std::ffi::OsStr,
flags: u32,
reply: fuser::ReplyEmpty,
) {
debug!(
"[Not Implemented] rename(parent: {:#x?}, name: {:?}, newparent: {:#x?}, \
newname: {:?}, flags: {})",
parent, name, newparent, newname, flags,
);
reply.error(ENOSYS);
}
fn link(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
newparent: u64,
newname: &std::ffi::OsStr,
reply: fuser::ReplyEntry,
) {
debug!(
"[Not Implemented] link(ino: {:#x?}, newparent: {:#x?}, newname: {:?})",
ino, newparent, newname
);
reply.error(EPERM);
}
fn open(&mut self, _req: &fuser::Request<'_>, _ino: u64, _flags: i32, reply: fuser::ReplyOpen) {
reply.opened(0, 0);
}
fn read(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
offset: i64,
size: u32,
flags: i32,
lock_owner: Option<u64>,
reply: fuser::ReplyData,
) {
warn!(
"[Not Implemented] read(ino: {:#x?}, fh: {}, offset: {}, size: {}, \
flags: {:#x?}, lock_owner: {:?})",
ino, fh, offset, size, flags, lock_owner
);
reply.error(ENOSYS);
}
fn write(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
offset: i64,
data: &[u8],
write_flags: u32,
flags: i32,
lock_owner: Option<u64>,
reply: fuser::ReplyWrite,
) {
debug!(
"[Not Implemented] write(ino: {:#x?}, fh: {}, offset: {}, data.len(): {}, \
write_flags: {:#x?}, flags: {:#x?}, lock_owner: {:?})",
ino,
fh,
offset,
data.len(),
write_flags,
flags,
lock_owner
);
reply.error(ENOSYS);
}
fn flush(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
lock_owner: u64,
reply: fuser::ReplyEmpty,
) {
debug!(
"[Not Implemented] flush(ino: {:#x?}, fh: {}, lock_owner: {:?})",
ino, fh, lock_owner
);
reply.error(ENOSYS);
}
fn release(
&mut self,
_req: &fuser::Request<'_>,
_ino: u64,
_fh: u64,
_flags: i32,
_lock_owner: Option<u64>,
_flush: bool,
reply: fuser::ReplyEmpty,
) {
reply.ok();
}
fn fsync(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
datasync: bool,
reply: fuser::ReplyEmpty,
) {
debug!("[Not Implemented] fsync(ino: {:#x?}, fh: {}, datasync: {})", ino, fh, datasync);
reply.error(ENOSYS);
}
fn opendir(
&mut self,
_req: &fuser::Request<'_>,
_ino: u64,
_flags: i32,
reply: fuser::ReplyOpen,
) {
reply.opened(0, 0);
}
fn readdir(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
offset: i64,
reply: fuser::ReplyDirectory,
) {
warn!("[Not Implemented] readdir(ino: {:#x?}, fh: {}, offset: {})", ino, fh, offset);
reply.error(ENOSYS);
}
fn readdirplus(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
offset: i64,
reply: fuser::ReplyDirectoryPlus,
) {
debug!(
"[Not Implemented] readdirplus(ino: {:#x?}, fh: {}, offset: {})",
ino, fh, offset
);
reply.error(ENOSYS);
}
fn releasedir(
&mut self,
_req: &fuser::Request<'_>,
_ino: u64,
_fh: u64,
_flags: i32,
reply: fuser::ReplyEmpty,
) {
reply.ok();
}
fn fsyncdir(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
datasync: bool,
reply: fuser::ReplyEmpty,
) {
debug!(
"[Not Implemented] fsyncdir(ino: {:#x?}, fh: {}, datasync: {})",
ino, fh, datasync
);
reply.error(ENOSYS);
}
fn statfs(&mut self, _req: &fuser::Request<'_>, _ino: u64, reply: fuser::ReplyStatfs) {
reply.statfs(0, 0, 0, 0, 0, 512, 255, 0);
}
fn setxattr(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
name: &std::ffi::OsStr,
_value: &[u8],
flags: i32,
position: u32,
reply: fuser::ReplyEmpty,
) {
debug!(
"[Not Implemented] setxattr(ino: {:#x?}, name: {:?}, flags: {:#x?}, position: {})",
ino, name, flags, position
);
reply.error(ENOSYS);
}
fn getxattr(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
name: &std::ffi::OsStr,
size: u32,
reply: fuser::ReplyXattr,
) {
debug!("[Not Implemented] getxattr(ino: {:#x?}, name: {:?}, size: {})", ino, name, size);
reply.error(ENOSYS);
}
fn listxattr(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
size: u32,
reply: fuser::ReplyXattr,
) {
debug!("[Not Implemented] listxattr(ino: {:#x?}, size: {})", ino, size);
reply.error(ENOSYS);
}
fn removexattr(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
name: &std::ffi::OsStr,
reply: fuser::ReplyEmpty,
) {
debug!("[Not Implemented] removexattr(ino: {:#x?}, name: {:?})", ino, name);
reply.error(ENOSYS);
}
fn access(&mut self, _req: &fuser::Request<'_>, ino: u64, mask: i32, reply: fuser::ReplyEmpty) {
debug!("[Not Implemented] access(ino: {:#x?}, mask: {})", ino, mask);
reply.error(ENOSYS);
}
fn create(
&mut self,
_req: &fuser::Request<'_>,
parent: u64,
name: &std::ffi::OsStr,
mode: u32,
umask: u32,
flags: i32,
reply: fuser::ReplyCreate,
) {
debug!(
"[Not Implemented] create(parent: {:#x?}, name: {:?}, mode: {}, umask: {:#x?}, \
flags: {:#x?})",
parent, name, mode, umask, flags
);
reply.error(ENOSYS);
}
fn getlk(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
lock_owner: u64,
start: u64,
end: u64,
typ: i32,
pid: u32,
reply: fuser::ReplyLock,
) {
debug!(
"[Not Implemented] getlk(ino: {:#x?}, fh: {}, lock_owner: {}, start: {}, \
end: {}, typ: {}, pid: {})",
ino, fh, lock_owner, start, end, typ, pid
);
reply.error(ENOSYS);
}
fn setlk(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
lock_owner: u64,
start: u64,
end: u64,
typ: i32,
pid: u32,
sleep: bool,
reply: fuser::ReplyEmpty,
) {
debug!(
"[Not Implemented] setlk(ino: {:#x?}, fh: {}, lock_owner: {}, start: {}, \
end: {}, typ: {}, pid: {}, sleep: {})",
ino, fh, lock_owner, start, end, typ, pid, sleep
);
reply.error(ENOSYS);
}
fn bmap(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
blocksize: u32,
idx: u64,
reply: fuser::ReplyBmap,
) {
debug!(
"[Not Implemented] bmap(ino: {:#x?}, blocksize: {}, idx: {})",
ino, blocksize, idx,
);
reply.error(ENOSYS);
}
fn ioctl(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
flags: u32,
cmd: u32,
in_data: &[u8],
out_size: u32,
reply: fuser::ReplyIoctl,
) {
debug!(
"[Not Implemented] ioctl(ino: {:#x?}, fh: {}, flags: {}, cmd: {}, \
in_data.len(): {}, out_size: {})",
ino,
fh,
flags,
cmd,
in_data.len(),
out_size,
);
reply.error(ENOSYS);
}
fn fallocate(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
offset: i64,
length: i64,
mode: i32,
reply: fuser::ReplyEmpty,
) {
debug!(
"[Not Implemented] fallocate(ino: {:#x?}, fh: {}, offset: {}, \
length: {}, mode: {})",
ino, fh, offset, length, mode
);
reply.error(ENOSYS);
}
fn lseek(
&mut self,
_req: &fuser::Request<'_>,
ino: u64,
fh: u64,
offset: i64,
whence: i32,
reply: fuser::ReplyLseek,
) {
debug!(
"[Not Implemented] lseek(ino: {:#x?}, fh: {}, offset: {}, whence: {})",
ino, fh, offset, whence
);
reply.error(ENOSYS);
}
fn copy_file_range(
&mut self,
_req: &fuser::Request<'_>,
ino_in: u64,
fh_in: u64,
offset_in: i64,
ino_out: u64,
fh_out: u64,
offset_out: i64,
len: u64,
flags: u32,
reply: fuser::ReplyWrite,
) {
debug!(
"[Not Implemented] copy_file_range(ino_in: {:#x?}, fh_in: {}, \
offset_in: {}, ino_out: {:#x?}, fh_out: {}, offset_out: {}, \
len: {}, flags: {})",
ino_in, fh_in, offset_in, ino_out, fh_out, offset_out, len, flags
);
reply.error(ENOSYS);
fn get_inode_mut(&mut self, ino: u64) -> Option<&mut Inode> {
self.inode_table.get_mut(&ino)
}
}