diff options
Diffstat (limited to 'hw/block/fdc.c')
| -rw-r--r-- | hw/block/fdc.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/hw/block/fdc.c b/hw/block/fdc.c index 77af9979de..9b24cb9b85 100644 --- a/hw/block/fdc.c +++ b/hw/block/fdc.c @@ -514,6 +514,7 @@ static void floppy_drive_realize(DeviceState *qdev, Error **errp) FloppyDrive *dev = FLOPPY_DRIVE(qdev); FloppyBus *bus = FLOPPY_BUS(qdev->parent_bus); FDrive *drive; + bool read_only; int ret; if (dev->unit == -1) { @@ -542,6 +543,12 @@ static void floppy_drive_realize(DeviceState *qdev, Error **errp) dev->conf.blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); ret = blk_attach_dev(dev->conf.blk, qdev); assert(ret == 0); + + /* Don't take write permissions on an empty drive to allow attaching a + * read-only node later */ + read_only = true; + } else { + read_only = !blk_bs(dev->conf.blk) || blk_is_read_only(dev->conf.blk); } blkconf_blocksizes(&dev->conf); @@ -559,9 +566,7 @@ static void floppy_drive_realize(DeviceState *qdev, Error **errp) dev->conf.rerror = BLOCKDEV_ON_ERROR_AUTO; dev->conf.werror = BLOCKDEV_ON_ERROR_AUTO; - if (!blkconf_apply_backend_options(&dev->conf, - blk_is_read_only(dev->conf.blk), - false, errp)) { + if (!blkconf_apply_backend_options(&dev->conf, read_only, false, errp)) { return; } |