On 02/16/2011 04:24 AM, Avi Kivity wrote:
On 02/16/2011 01:13 AM, Anthony Liguori wrote:
On 02/15/2011 10:26 AM, Chris Wright wrote:
QAPI and QMP
- Anthony adding a new wiki page to describe all of this
http://wiki.qemu.org/Features/QAPI
[ 'change', {'device': 'str', 'target': 'str'}, {'arg': 'str'},
'none' ]
->
void qmp_change(const char *device, const char *target, bool
has_arg, const char *arg, Error **errp);
AFAICT a json-string allows embedded NULs ('\0000'). There translate
to UTF-8 as '\0', terminating your char *s. Either we use some
length/pointer structure, or the parser has to look for them and kill
them, and we have to specify them as verboten.
I feel like it would be safer for us to not accept strings with embedded
NULs. There's no way we're going to consistently handle this correctly
in QEMU since we expect NUL terminated strings. They won't work for any
of the standard C functions either.
BlockDeviceInfo *qmp_query_block_device_info(const char *device, Error
**errp)
{
BlockDeviceInfo *info;
BlockDriverState *bs;
Error *local_err = NULL;
bs = bdrv_find(device,&local_err);
if (local_err) {
error_propagate(errp, local_err);
return NULL;
}
info->file = qemu_strdup(bs->filename);
info->ro = bs->readonly;
info->drv = qemu_strdup(bs->drv);
info->encrypted = bs->encrypted;
if (bs->backing_file[0]) {
info->has_backing_file = true;
info->backing_file = qemu_strdup(info->backing_file);
}
return info;
}
So, info and all its pointer-typed members are required to be
qemu_free() compatible, with just a single pointer pointing to an
object, and generated code will qemu_free() everything?
Yes.
Recommend translating '-' in identifiers to '_' so we can use '-' in
the schema as a word separator.
Already do that and we make extensive use of that in the schema.
Regards,
Anthony Liguori
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