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block: allow VIRTIO_BLK_T_GET_ID for read-only devices

Browse source 
https://github.com/cloud-hypervisor/cloud-hypervisor/pull/7294 adjusted
the checks for read-only requests made to virtio-blk devices and started
rejecting VIRTIO_BLK_T_GET_ID requests. These requests do not perform
any writes and are needed in order to access device serials from within
the guest.

Signed-off-by: Connor Brewster <cbrewster@hey.com>
This commit is contained in:
Connor Brewster 2025-12-06 12:55:26 -06:00 • committed by Rob Bradford
parent 8de24b5f08
commit 41a8dcd9ba
2 changed files with 4 additions and 2 deletions
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2
block/src/lib.rs
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@ -136,7 +136,7 @@ pub enum ExecuteError {
Read(#[source] GuestMemoryError),
#[error("Failed to read_exact")]
ReadExact(#[source] io::Error),
#[error("Can't execute an operation other than `read` on a read-only device")]
#[error("Can't execute an operation other than `read` or `get_id` on a read-only device")]
ReadOnly,
#[error("Failed to seek")]
Seek(#[source] io::Error),