hmp: Request permissions in qemu-io
The HMP command 'qemu-io' is a bit tricky because it wants to work on
the original BlockBackend, but additional permissions could be required.
The details are explained in a comment in the code, but in summary, just
request whatever permissions the current qemu-io command needs.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Acked-by: Fam Zheng <famz@redhat.com>
diff --git a/include/qemu-io.h b/include/qemu-io.h
index 4d402b9..196fde0 100644
--- a/include/qemu-io.h
+++ b/include/qemu-io.h
@@ -36,6 +36,7 @@
const char *args;
const char *oneline;
helpfunc_t help;
+ uint64_t perm;
} cmdinfo_t;
extern bool qemuio_misalign;
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index b23f683..096c17f 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -107,6 +107,7 @@
bool bdrv_is_root_node(BlockDriverState *bs);
int blk_set_perm(BlockBackend *blk, uint64_t perm, uint64_t shared_perm,
Error **errp);
+void blk_get_perm(BlockBackend *blk, uint64_t *perm, uint64_t *shared_perm);
void blk_set_allow_write_beyond_eof(BlockBackend *blk, bool allow);
void blk_iostatus_enable(BlockBackend *blk);
