raw-posix: Remove O_RDWR when attempting to open a file read-only
When we open a file, we first attempt to open it read-write, then fall back
to read-only. Unfortunately we reuse the flags from the previous attempt,
so both attempts try to open the file with write permissions, and fail.
Fix by clearing the O_RDWR flag from the previous attempt.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/block/raw-posix.c b/block/raw-posix.c
index 5790206..ccb014a 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -133,6 +133,7 @@
s->lseek_err_cnt = 0;
s->open_flags |= O_BINARY;
+ s->open_flags &= ~O_ACCMODE;
if ((flags & BDRV_O_ACCESS) == BDRV_O_RDWR) {
s->open_flags |= O_RDWR;
} else {
