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src/pxar/fuse.rs: impl read callback for fuse 

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
This commit is contained in:
Christian Ebner 2019-09-09 18:27:28 +02:00 committed by Dietmar Maurer
parent 97e4db9dd5
commit 2c5fd378d3
1 changed files with 14 additions and 4 deletions
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18
src/pxar/fuse.rs
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@ -53,6 +53,7 @@ type Request = *mut c_void;
type MutPtr = *mut c_void; type MutPtr = *mut c_void;
type ConstPtr = *const c_void; type ConstPtr = *const c_void;
type StrPtr = *const c_char; type StrPtr = *const c_char;
type MutStrPtr = *mut c_char;
#[rustfmt::skip] #[rustfmt::skip]
#[link(name = "fuse3")] #[link(name = "fuse3")]
@ -69,6 +70,7 @@ extern "C" {
fn fuse_reply_attr(req: Request, attr: Option<&libc::stat>, timeout: f64) -> c_int; fn fuse_reply_attr(req: Request, attr: Option<&libc::stat>, timeout: f64) -> c_int;
fn fuse_reply_err(req: Request, errno: c_int) -> c_int; fn fuse_reply_err(req: Request, errno: c_int) -> c_int;
fn fuse_reply_open(req: Request, fileinfo: ConstPtr) -> c_int; fn fuse_reply_open(req: Request, fileinfo: ConstPtr) -> c_int;
fn fuse_reply_buf(req: Request, buf: MutStrPtr, size: size_t) -> c_int;
fn fuse_reply_entry(req: Request, entry: Option<&EntryParam>) -> c_int; fn fuse_reply_entry(req: Request, entry: Option<&EntryParam>) -> c_int;
fn fuse_req_userdata(req: Request) -> MutPtr; fn fuse_req_userdata(req: Request) -> MutPtr;
} }
@ -435,11 +437,19 @@ extern "C" fn open(req: Request, inode: u64, fileinfo: MutPtr) {
}); });
} }
extern "C" fn read(req: Request, inode: u64, _size: size_t, _offset: c_int, _fileinfo: MutPtr) { extern "C" fn read(req: Request, inode: u64, size: size_t, offset: c_int, _fileinfo: MutPtr) {
run_in_context(req, inode, |_decoder, _ino_offset| { run_in_context(req, inode, |decoder, ino_offset| {
// code goes here let mut data = decoder
.read(ino_offset, size, offset as u64)
.map_err(|_| libc::EIO)?;
Err(libc::ENOENT) let _res = unsafe {
let len = data.len();
let dptr = data.as_mut_ptr() as *mut c_char;
fuse_reply_buf(req, dptr, len)
};
Ok(())
}); });
} }