lwn.git/tools/net/sunrpc/xdrgen/templates/C/program/decoder, branch master

xdrgen: Fix struct prefix for typedef types in program wrappers

2026-01-26T15:10:58+00:00

The program templates for decoder/argument.j2 and encoder/result.j2 unconditionally add 'struct' prefix to all types. This is incorrect when an RPC protocol specification lists a typedef'd basic type or an enum as a procedure argument or result (e.g., NFSv2's fhandle or stat), resulting in compiler errors when building generated C code. Fixes: 4b132aacb076 ("tools: Add xdrgen") Signed-off-by: Chuck Lever

xdrgen: Remove program_stat_to_errno() call sites

2024-11-19T01:23:07+00:00

Refactor: Translating an on-the-wire value to a local host errno is architecturally a job for the proc function, not the XDR decoder. Signed-off-by: Chuck Lever

xdrgen: Remove check for "nfs_ok" in C templates

2024-11-19T01:23:06+00:00

Obviously, "nfs_ok" is defined only for NFS protocols. Other XDR protocols won't know "nfs_ok" from Adam. Signed-off-by: Chuck Lever

xdrgen: Remove tracepoint call site

2024-11-19T01:23:06+00:00

This tracepoint was a "note to self" and is not operational. It is added only to client-side code, which so far we haven't needed. It will cause immediate breakage once we start generating client code, though, so remove it now. Signed-off-by: Chuck Lever

tools: Add xdrgen

2024-09-20T23:31:39+00:00

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 Signed-off-by: Chuck Lever