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block_util: modify or provide safety comments

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Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu
2022-11-16 22:29:18 +00:00
committed by Liu Wei
parent 8a7f4b47cb
commit f110029acf
3 changed files with 10 additions and 3 deletions
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7
block_util/src/raw_async.rs
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@@ -81,7 +81,7 @@ impl AsyncIo for RawFileAsync {
) -> AsyncIoResult<()> {
let (submitter, mut sq, _) = self.io_uring.split();
// Safe because we know the file descriptor is valid and we
// SAFETY: we know the file descriptor is valid and we
// relied on vm-memory to provide the buffer address.
let _ = unsafe {
sq.push(
@@ -109,7 +109,7 @@ impl AsyncIo for RawFileAsync {
) -> AsyncIoResult<()> {
let (submitter, mut sq, _) = self.io_uring.split();
// Safe because we know the file descriptor is valid and we
// SAFETY: we know the file descriptor is valid and we
// relied on vm-memory to provide the buffer address.
let _ = unsafe {
sq.push(
@@ -133,7 +133,7 @@ impl AsyncIo for RawFileAsync {
if let Some(user_data) = user_data {
let (submitter, mut sq, _) = self.io_uring.split();
// Safe because we know the file descriptor is valid.
// SAFETY: we know the file descriptor is valid.
let _ = unsafe {
sq.push(
&opcode::Fsync::new(types::Fd(self.fd))
@@ -148,6 +148,7 @@ impl AsyncIo for RawFileAsync {
sq.sync();
submitter.submit().map_err(AsyncIoError::Fsync)?;
} else {
// SAFETY: FFI call with a valid fd
unsafe { libc::fsync(self.fd) };
}