befs_read_datastream(9)

💅 befs_read_datastream (kernel API manual, section 9)

okay bestie, gather round, because today we're looking at befs_read_datastream(9) — yes that's the section 9 kernel API manual page, and yes it's giving "niche BeFS internals" and honestly? iconic. this one's a little function with a big job: it hands you back a buffer_head that's holding your data, starting from pos. no cap. 🎀

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✨ NAME ✨

befs_read_datastream — get buffer_head containing data, starting from pos. that's it, that's the whole vibe. 💖

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🌸 SYNOPSIS 🌸

struct buffer_head * befs_read_datastream (struct super_block *sb ,
       const befs_data_stream *ds , befs_off_t pos , uint *off );

look at that signature, she's gorgeous, she's exact, copy her character for character or she WILL not compile, fr fr 🦋

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🫶 ARGUMENTS 🫶

• sb — filesystem superblock. the big boss of the whole filesystem, main character energy 👑
• ds — datastream to find data with. this is the datastream we're going hunting in 🔍
• pos — start of data. where the data starts, literally, that's the whole thing ⭐
• off — offset of data in buffer_head->b_data. so once you've got your buffer head, this tells you where in its b_data the actual good stuff begins 💅

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💜 DESCRIPTION 💜

returns a pointer to the buffer_head containing data starting with offset off. 🎀

and here's the lowkey best part: if you don't need to know the offset, just set off = NULL and carry on with your life. no stress, no extra work, she simply does not need to know. 🙈✨

ngl, that's the entire description — short, sweet, and absolutely not going to elaborate further. periodt. 💀

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🔥 SEE ALSO 🔥

• Kernel file ./fs/befs/datastream.c — the source, the origin story, the mothership 🌈
• befs_fblock2brun(9)
• befs_count_blocks(9)
• befs_find_brun_direct(9)
• befs_find_brun_indirect(9)
• befs_find_brun_dblindirect(9)

that's the whole brun-hunting friend group right there, and honestly? obsessed with them. go read all of them, iykyk 🧚

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and that's the page, bestie! 💖 this little gem lives under ./fs/befs, dated October 2026, and it's your girl befs_read_datastream(9) signing off — slay, stay hydrated, and always check your offsets 🍓✨