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| author | Alberto Garcia <berto@igalia.com> | 2019-03-12 18:48:48 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2019-03-12 20:30:14 +0100 |
| commit | 8a2ce0bc1eb447c19c52422c03e690a420ea3ec7 (patch) | |
| tree | ea4398dbcc4f7211347e4b0100de2030a680c10b /block/file-posix.c | |
| parent | cb828c31de125d8c88ba1c3510b11343cbd211b3 (diff) | |
| download | qemu-8a2ce0bc1eb447c19c52422c03e690a420ea3ec7.zip qemu-8a2ce0bc1eb447c19c52422c03e690a420ea3ec7.tar.gz qemu-8a2ce0bc1eb447c19c52422c03e690a420ea3ec7.tar.bz2 | |
block: Add a 'mutable_opts' field to BlockDriver
If we reopen a BlockDriverState and there is an option that is present
in bs->options but missing from the new set of options then we have to
return an error unless the driver is able to reset it to its default
value.
This patch adds a new 'mutable_opts' field to BlockDriver. This is
a list of runtime options that can be modified during reopen. If an
option in this list is unspecified on reopen then it must be reset (or
return an error).
Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/file-posix.c')
| -rw-r--r-- | block/file-posix.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/block/file-posix.c b/block/file-posix.c index d41059d..e9fa6aa 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -442,6 +442,8 @@ static QemuOptsList raw_runtime_opts = { }, }; +static const char *const mutable_opts[] = { "x-check-cache-dropped", NULL }; + static int raw_open_common(BlockDriverState *bs, QDict *options, int bdrv_flags, int open_flags, bool device, Error **errp) @@ -2870,6 +2872,7 @@ BlockDriver bdrv_file = { .bdrv_set_perm = raw_set_perm, .bdrv_abort_perm_update = raw_abort_perm_update, .create_opts = &raw_create_opts, + .mutable_opts = mutable_opts, }; /***********************************************/ @@ -3321,6 +3324,7 @@ static BlockDriver bdrv_host_device = { .bdrv_reopen_abort = raw_reopen_abort, .bdrv_co_create_opts = hdev_co_create_opts, .create_opts = &raw_create_opts, + .mutable_opts = mutable_opts, .bdrv_co_invalidate_cache = raw_co_invalidate_cache, .bdrv_co_pwrite_zeroes = hdev_co_pwrite_zeroes, @@ -3447,6 +3451,7 @@ static BlockDriver bdrv_host_cdrom = { .bdrv_reopen_abort = raw_reopen_abort, .bdrv_co_create_opts = hdev_co_create_opts, .create_opts = &raw_create_opts, + .mutable_opts = mutable_opts, .bdrv_co_invalidate_cache = raw_co_invalidate_cache, @@ -3580,6 +3585,7 @@ static BlockDriver bdrv_host_cdrom = { .bdrv_reopen_abort = raw_reopen_abort, .bdrv_co_create_opts = hdev_co_create_opts, .create_opts = &raw_create_opts, + .mutable_opts = mutable_opts, .bdrv_co_preadv = raw_co_preadv, .bdrv_co_pwritev = raw_co_pwritev, |