diff options
| author | Fam Zheng <famz@redhat.com> | 2013-05-29 19:35:40 +0800 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2013-06-04 12:11:58 +0200 |
| commit | b64ec4e4ade581d662753cdeb0d7e0e27aafbf81 (patch) | |
| tree | 73a06f4c2528be5cf76830bb9679b4a37e87aa7e /blockdev.c | |
| parent | 8ddd08c5d1415a71f21157686d43f48ff14992b6 (diff) | |
block: add block driver read only whitelist
We may want to include a driver in the whitelist for read only tasks
such as diagnosing or exporting guest data (with libguestfs as a good
example). This patch introduces a readonly whitelist option, and for
backward compatibility, the old configure option --block-drv-whitelist
is now an alias to rw whitelist.
Drivers in readonly list is only permitted to open file readonly, and
returns -ENOTSUP for RW opening.
E.g. To include vmdk readonly, and others read+write:
./configure --target-list=x86_64-softmmu \
--block-drv-rw-whitelist=qcow2,raw,file,qed \
--block-drv-ro-whitelist=vmdk
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'blockdev.c')
| -rw-r--r-- | blockdev.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/blockdev.c b/blockdev.c index d1ec99af73..b9b2d10e6b 100644 --- a/blockdev.c +++ b/blockdev.c @@ -477,7 +477,7 @@ DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) error_printf("\n"); return NULL; } - drv = bdrv_find_whitelisted_format(buf); + drv = bdrv_find_whitelisted_format(buf, ro); if (!drv) { error_report("'%s' invalid format", buf); return NULL; @@ -1096,7 +1096,7 @@ void qmp_change_blockdev(const char *device, const char *filename, } if (format) { - drv = bdrv_find_whitelisted_format(format); + drv = bdrv_find_whitelisted_format(format, bs->read_only); if (!drv) { error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); return; |