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4b132aacb0
Add a Python-based tool for translating XDR specifications into XDR encoder and decoder functions written in the Linux kernel's C coding style. The generator attempts to match the usual C coding style of the Linux kernel's SunRPC consumers. This approach is similar to the netlink code generator in tools/net/ynl . The maintainability benefits of machine-generated XDR code include: - Stronger type checking - Reduces the number of bugs introduced by human error - Makes the XDR code easier to audit and analyze - Enables rapid prototyping of new RPC-based protocols - Hardens the layering between protocol logic and marshaling - Makes it easier to add observability on demand - Unit tests might be built for both the tool and (automatically) for the generated code In addition, converting the XDR layer to use memory-safe languages such as Rust will be easier if much of the code can be converted automatically. Tested-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
22 lines
572 B
Django/Jinja
22 lines
572 B
Django/Jinja
{# SPDX-License-Identifier: GPL-2.0 #}
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/**
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* {{ program }}_svc_decode_{{ argument }} - Decode a {{ argument }} argument
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* @rqstp: RPC transaction context
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* @xdr: source XDR data stream
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*
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* Return values:
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* %true: procedure arguments decoded successfully
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* %false: decode failed
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*/
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bool {{ program }}_svc_decode_{{ argument }}(struct svc_rqst *rqstp, struct xdr_stream *xdr)
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{
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{% if argument == 'void' %}
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return xdrgen_decode_void(xdr);
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{% else %}
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struct {{ argument }} *argp = rqstp->rq_argp;
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return xdrgen_decode_{{ argument }}(xdr, argp);
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{% endif %}
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}
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