xdr_stream_...paque_inline(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 NAME 🌸

okay bestie, welcome to xdr_stream_...paque_inline(9) from the Kernel API Manual 💖 the main character is xdr_stream_decode_opaque_inline, and she is here to decode variable length opaque xdr data. no cap.

✨ SYNOPSIS ✨

the whole signature, untouched, because we do not mess with the source:

ssize_t xdr_stream_decode_opaque_inline (struct xdr_stream *xdr , void
       **ptr , size_t maxlen );

🎀 ARGUMENTS 🎀

  • xdr — pointer to xdr_stream. that's the stream we're reading from, bestie.
  • ptr — location to store pointer to opaque data. this is where the pointer goes, not the data itself 💅
  • maxlen — maximum acceptable object size. respect the limit, fr fr.

⚠️ NOTE ⚠️

okay so this is the big one: the pointer stored in ptr cannot be assumed valid after the XDR buffer has been destroyed, or even after calling xdr_inline_decode on xdr. 😭 it is therefore expected that the object it points to should be processed immediately. do not save it for later, just process it right away 🫶

🔥 RETURN 🔥

On success, returns size of object stored in *ptr. -EBADMSG on XDR buffer overflow. -EMSGSIZE if the size of the object would exceed maxlen. that's the whole return vibe, periodt ✨

🦋 SEE ALSO 🦋

the kernel file is ./include/linux/sunrpc/xdr.h, and the whole squad is:

ciao for now 💜 source/version: ./include/linux/sunrpc · date: October 2026 · page: xdr_stream_...paque_inline(9)

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