xdr_buf_to_bvec(9)

💅 xdr_buf_to_bvec(9) — Kernel API Manual ✨

okay so bestie, this is a page from the Kernel API Manual, and honestly? it's a short one, so grab your iced coffee and let's go 🫶

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🌸 NAME 🌸

xdr_buf_to_bvec — copy components of an xdr_buf into a bio_vec array 💖

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✨ SYNOPSIS ✨

int xdr_buf_to_bvec (struct bio_vec *bvec , unsigned int bvec_size ,
const struct xdr_buf *xdr );

like, that's the whole signature, no cap 👑

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🎀 ARGUMENTS 🎀

• bvec — the bio_vec array you're populating, bestie. it's the destination, the main character of this function 🌟
• bvec_size — how many elements bvec actually has. the element count. the vibe check capacity, if you will 💅
• xdr — the xdr_buf that's getting copied. it's the source material 🦋

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💜 DESCRIPTION 💜

so what does it do? it copies components of an xdr_buf into a bio_vec array, periodt ✨

on success it returns the number of entries consumed in bvec 🔥

and if xdr doesn't fit within bvec_size entries? it returns -ESERVERFAULT 😭 that's the "it's giving doesn't fit" error, ngl. so plan your bvec_size accordingly 🙈

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🧚 SEE ALSO 🧚

the kernel file ./net/sunrpc/xdr.c says hi 👋 and also literally all of these icons:

• xdr_encode_opaque_fixed(9)
• xdr_encode_opaque(9)
• xdr_terminate_string(9)
• xdr_buf_to_sg(9)
• xdr_buf_to_sg_alloc(9)
• xdr_inline_pages(9)
• _shift_data_left_pages(9)
• _shift_data_right_pages(9)
• _copy_to_pages(9)
• _copy_from_pages(9)
• xdr_buf_pages_zero(9)
• xdr_shrink_bufhead(9)
• xdr_shrink_pagelen(9)
• xdr_stream_pos(9)
• xdr_page_pos(9)
• xdr_init_encode(9)
• xdr_init_encode_pages(9)
• __xdr_commit_encode(9)
• xdr_reserve_space(9)
• xdr_reserve_space_vec(9)
• xdr_truncate_encode(9)
• xdr_truncate_decode(9)
• xdr_restrict_buflen(9)
• xdr_write_pages(9)
• xdr_init_decode(9)
• xdr_init_decode_pages(9)
• xdr_finish_decode(9)
• xdr_inline_decode(9)
• xdr_read_pages(9)
• xdr_set_pagelen(9)
• xdr_enter_page(9)
• xdr_buf_subsegment(9)
• xdr_stream_subsegment(9)
• xdr_stream_move_subsegment(9)
• xdr_stream_zero(9)
• xdr_buf_trim(9)
• xdr_stream_decode_string_dup(9)
• xdr_stream_decode_opaque_auth(9)
• xdr_stream_encode_opaque_auth(9)

like, that's the whole XDR friend group right there 🌈💖

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ngl that's the whole page — short, sweet, and it ate 💅 no secrets, no hidden flags, just vibes and one very specific error code 🍓

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okay bye bestie!! this little drop came straight out of ./net/sunrpc, dated October 2026, and it's xdr_buf_to_bvec(9) signing off 🎀💜✨