On 07/18/2013 07:27 AM, Daniel P. Berrange wrote:
> From: "Daniel P. Berrange" <berrange@xxxxxxxxxx>
>
> Doing DBus method calls using libdbus.so is tedious in the
> extreme. systemd developers came up with a nice high level
> API for DBus method calls (sd_bus_call_method). While
> systemd doesn't use libdbus.so, their API design can easily
> be ported to libdbus.so.
>
> This patch thus introduces methods virDBusCallMethod &
> virDBusMessageRead, which are based on the code used for
> sd_bus_call_method and sd_bus_message_read. This code in
> systemd is under the LGPLv2+, so we're license compatible.
>
> This code is probably pretty unintelligible unless you are
> familiar with the DBus type system. So I added some API
> docs trying to explain how to use them, as well as test
> cases to validate that I didn't screw up the adaptation
> from the original systemd code.
>
> Signed-off-by: Daniel P. Berrange <berrange@xxxxxxxxxx>
> ---
> +static const char virDBusBasicTypes[] = {
> + DBUS_TYPE_BYTE,
> + DBUS_TYPE_BOOLEAN,
> + DBUS_TYPE_INT16,
> + DBUS_TYPE_UINT16,
> + DBUS_TYPE_INT32,
> + DBUS_TYPE_UINT32,
> + DBUS_TYPE_INT64,
> + DBUS_TYPE_UINT64,
> + DBUS_TYPE_DOUBLE,
> + DBUS_TYPE_STRING,
> + DBUS_TYPE_OBJECT_PATH,
> + DBUS_TYPE_SIGNATURE,
> + DBUS_TYPE_UNIX_FD
> +};
This fails to build on RHEL 6.4:
CC libvirt_util_la-virdbus.lo
util/virdbus.c:242: error: 'DBUS_TYPE_UNIX_FD' undeclared here (not in a
function)
cc1: warnings being treated as errors
DBUS_TYPE_UNIX_FD was added sometime after dbus-devel-1.2.24 and before
1.6.12; we'll have to make the code conditional and error out if a
client tries to pass an fd when using an older version of dbus.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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