Before this patch, if a channel is defined conditionally in spice.proto
(because it depends on external headers like the smartcard channel),
spice_codegen would write an entry to the channels array in
spice_get_*_channel_parser which would only take up a place in the array
if the ifdef condition is true, thus moving up all other intializers
one place when it is not true. This was causing issues (crashes) when building
spice-gtk with the combination of usbredir support enabled and smartcard
support disabled.
This patch fixes this by adding #else { NULL, 0 }, to the generated code.
Thanks to coolper chen <lixin.chen@saicocch.com> for reporting this!
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
We want to be able to add an @ifdef annotation to optional messages
For example, we want to compile in the smartcard messages only if
libcacard is available
A message with a fixed-size array, such as uint8 uuid[16] will
generate an invalid code, missing the __nelements variable. Make sure
that variable is defined.
With the new usbredir code we have the new concept of the abstract /
generic spicevmc channel type (which just tunnels data from a qemu chardev),
and we've the usbredir channel, which is the only current user of this.
This was reflected in the protocols enum in spice-protocol.h by a manual
edit done by me, my bad. This patch teaches spice.proto about the relation
between the abstract spicevmc channel and the usbredir channel and
modifies codegen to deal with this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Check both in configure.ac (after checking if we need to rebuild
the marshalling files) and in the python script using pyparsing
(for people modifying .proto files in tarballs)
Commit 9d5ef9beeca722b2ceff7d15aaa3aaaaf07ecfbf in spice-protocol
introduced a typedef manually in the generated enums.h header.
This patch adds them automatically to all enums during enums.h generation.
python_modules/demarshal.py and marshal.py fixes for gcc 4.6.0
warning about set but unused variables. The fixes disable creating
of variables mem_size when they are not used (demarshall) and
declaring a src variable when the message doesn't use it (marshal).
You need to touch *.proto after applying this (should add a Makefile
dependency).
Patch adds a "from __future__" import that doesn't affect newer python's but
allows python 2.5.4 to run the code (tested under scratchbox, n900 build environment)
It turns out that using base + sizeof(struct) is not a good way to
access an array at the end of a struct. For SpicePalette sizeof is 16, but
offset of ents is 12. Using this calculation in the demarshaller breaks
things badly, so now we use the actual array member.
Remove all uses of @end in the marshaller, instead just using
the C struct array-at-end-of-struct. To make this work we also remove
all use of @end for switches (making them C unions).
We drop the zero member of the notify message so that we can avoid this
use of @end for a primitive in the marshaller (plus its useless to send
over the wire).
We change the offsets and stuff in the migration messages to real pointers.
Even for is_extra_size() we should calculate the mem_size for
arrays, its just that the parent type (in this case switch) should
request mem_size if the type is_extra_size.
Internally and in the network protocol (for the new version) we
now store the actual number of segments rather than the size of the
full segments array in bytes. This change consists of multiple changes
to handle this:
* Make the qxl parser calculate num_segments
* Make the canvas stroke code handle the new SpicePath layout.
* Fix up is_equal_path in red_worker.c for the new layout
* replace multiple calls to spice_marshall_PathSegment with a single
spice_marshall_Path call
* Make the byte_size() array size handling do the conversion from
network size to number of elements when marshalling/demarshalling.
* Update the current spice protocol to send the segment count rather than
the size
* Update the old spice protocol to use the new byte_size functionallity
to calculate the size sent and the number of elements recieved
A @c_ptr pointer is stored in memory as a real pointer rather than a
SPICE_ADDRESS. This is a temporary thing that will be removed again
when all SPICE_ADDRESSes have been converted to real pointer.
This means the member is not sent on the network at all.
Instead its initialized to the attribute argument when demarshalled.
This is useful for backwards compatibility support.
This is required because we don't want to free messages that just
refer to the unparsed message (like SpiceMsgData).
Also, in the future we might need it for more complex demarshalling.
The "spice.proto" file describes in detail the networking prototcol
that spice uses and spice_codegen.py can parse this and generate
demarshallers for such network messages.
