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block: Implement DiskSize trait for RawFileDisk

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Add disk_file::DiskSize trait implementation for RawFileDisk
using BlockError and BlockResult. Uses metadata().len()
instead of seek(SeekFrom::End(0)), taking &self instead of
&mut self.

Add BlockError, BlockErrorKind, BlockResult, and disk_file
imports needed by this and subsequent trait impls.

Signed-off-by: Muminul Islam <muislam@microsoft.com>
This commit is contained in:
Muminul Islam
2026-03-24 17:24:02 -07:00
committed by Bo Chen
parent 4586ca133a
commit 0647202215
1 changed files with 11 additions and 1 deletions
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12
block/src/raw_async.rs
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@@ -14,8 +14,10 @@ use vmm_sys_util::eventfd::EventFd;
use crate::async_io::{
AsyncIo, AsyncIoError, AsyncIoResult, BorrowedDiskFd, DiskFile, DiskFileError, DiskFileResult,
};
use crate::error::{BlockError, BlockErrorKind, BlockResult};
use crate::{
BatchRequest, DiskTopology, RequestType, SECTOR_SIZE, probe_sparse_support, query_device_size,
BatchRequest, DiskTopology, RequestType, SECTOR_SIZE, disk_file, probe_sparse_support,
query_device_size,
};
#[derive(Debug)]
@@ -72,6 +74,14 @@ impl DiskFile for RawFileDisk {
}
}
impl disk_file::DiskSize for RawFileDisk {
fn logical_size(&self) -> BlockResult<u64> {
query_device_size(&self.file)
.map(|(logical_size, _)| logical_size)
.map_err(|e| BlockError::new(BlockErrorKind::Io, DiskFileError::Size(e)))
}
}
pub struct RawFileAsync {
fd: RawFd,
io_uring: IoUring,