On restore we typically read an image and put the entries into
some hash/list/whatever to work on them later. It's handy to have
a generic routine for doing so.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
The pb_read thing is no longer a macros. This will allow to
factor out objects collecting on restore.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
The protobuf-c generate plain routines for entries manipulations, but
we want to have some "generic" way of working with messages. Collect them
all in an array of descriptors (similar to image files descriptions) and
do full typechecking while this.
Such thing will allow to simplfy code later.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This patch also updates pipe data and sockets queues payload handlers to
output data in "-c" option was passed to crtools.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Payload handler can be passed into generic protobuf show function.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Will be used for single-entry images.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Try hard to find the symbolic (declared in .proto file) name
for the given value.
Will use enums in fdinfo, thus prepare.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This one walks the 'plain' image file, i.e. the one with straignt <magi>[<size><entry>]*
format, and prints each message. Saves lots of lines of code.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This function can be used for any protobuf message which contains required,
repeated and even nested messages fields.
The functions doesn't support yet:
1) Optional fields (skipped)
2) Fields types: PROTOBUF_C_TYPE_FLOAT, PROTOBUF_C_TYPE_DOUBLE,
PROTOBUF_C_TYPE_BOOL, PROTOBUF_C_TYPE_ENUM, PROTOBUF_C_TYPE_BYTES.
These are show as unknown objects.
IOW, it supports only existent proto files.
Inspired-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Stanislav Kinsbursky <skinsbursky@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
To not bloat util.h or image.h the protobuf.h introduced to handle all PB needs.
We represent our PB objects as pairs of records
| 4 bytes for object packed size
+---
| X bytes -- object itself
v3:
- Use plain read/write calls
- Use local buffers for small objects
v4:
- Add pb_pksize helper to calculate object
size with header
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
