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raw-posix: Remove O_RDWR when attempting to open a file read-only

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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>
This commit is contained in:
Avi Kivity 2009-06-16 16:21:09 +03:00 committed by Anthony Liguori
parent 736d0c25ed
commit 11a1feb655
1 changed files with 1 additions and 0 deletions
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block/raw-posix.c
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@ -133,6 +133,7 @@ static int raw_open_common(BlockDriverState *bs, const char *filename,
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 {