xdr_stream_...paque_inline(9)

📦 version 7.3.1, in nixpkgs unstable

💅 xdr_stream_encode_opaque_inline — the kernel API manual, bestie edition ✨

okay so this is a page from the Kernel API Manual (manual name: xdr_stream_...paque_inline(9), yes the title got truncated mid-word, she's doing her best 🫶) and it's literally all about squishing opaque xdr data into a stream. it's giving "short page, important job" energy.

✨ NAME ✨

xdr_stream_encode_opaque_inline — Encode opaque xdr data 💖

like, that's it, that's the whole vibe. she encodes. she's opaque. she's inline. iconic.

🎀 SYNOPSIS 🎀

ssize_t xdr_stream_encode_opaque_inline (struct xdr_stream *xdr , void
**ptr , size_t len );

no cap, that's the exact signature — three args, one ssize_t return, and she's wrapped across two lines in the original and we're keeping it that way because we respect the source material 🙈

🦋 ARGUMENTS 🦋

  • xdr — pointer to xdr_stream. this is the stream, the main character, the thing everything happens inside of. 👑
  • ptr — pointer to void pointer. yes bestie, a pointer to a pointer, double-indirection is a whole aesthetic and we're living for it. 💀
  • len — size of object. how big the thing is. that's the whole note. ✨

🌸 RETURN 🌸

  • On success — returns length in bytes of XDR buffer consumed. so she tells u exactly how much buffer she ate, which is honestly so considerate of her 🍓
  • -EMSGSIZE — on XDR buffer overflow. translation: the buffer ran out of room and she's not happy about it, so u get this negative errno instead. 😭
fr fr, check that return value. success gives u a byte count (a non-negative number), overflow gives u -EMSGSIZE. those are very different situations and u do not want to mix them up 💅

🔥 SEE ALSO 🔥

Kernel file ./include/linux/sunrpc/xdr.h — that's the header where all the xdr lore lives, go read it, she's thick with content 👑

and then the whole friend group, in order, because every single one of these deserves a mention:

note the last few — the decode_* girlies are the mirror-image counterparts of the encode_* ones, and notably xdr_stream_decode_opaque_inline(9) is literally this function's sibling. family reunion 🧚💜

okay that's the page!! mwah 💖 big kiss, go encode some opaque data responsibly.

sign-off moment: this gem comes from ./include/linux/sunrpc, dated October 2026, and it's filed under the xdr_stream_...paque_inline(9) entry in the Kernel API Manual. slay, documented, periodt. 🌈⭐👑

📦 where this page comes from