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blockdev: Clean up how readonly persists across virtual media change

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Since commit cb4e5f8e, monitor command change makes the new media
readonly iff the type hint is BDRV_TYPE_CDROM, i.e. the drive was
created with media=cdrom.  The intention is to avoid changing a block
device's read-only-ness.  However, BDRV_TYPE_CDROM is only a hint.  It
is currently sufficent for read-only.  But it's not necessary, and it
may not remain sufficient.

Use bdrv_is_read_only() instead.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2010-06-25 15:26:48 +02:00 committed by Kevin Wolf
parent 2930b313dd
commit 528f766347
1 changed files with 1 additions and 1 deletions
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blockdev.c
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@ -589,7 +589,7 @@ int do_change_block(Monitor *mon, const char *device,
if (eject_device(mon, bs, 0) < 0) {
return -1;
}
bdrv_flags = bdrv_get_type_hint(bs) == BDRV_TYPE_CDROM ? 0 : BDRV_O_RDWR;
bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR;
if (bdrv_open(bs, filename, bdrv_flags, drv) < 0) {
qerror_report(QERR_OPEN_FILE_FAILED, filename);
return -1;