leb_read_lock(9)

✨ leb_read_lock(9) ✨

okay so this is a page from the Kernel API Manual (section 9 of the man pages, iykyk) and it's all about leb_read_lock — literally the function that grabs a logical eraseblock so you can read it. let's get into it bestie 💅

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🌸 SYNOPSIS 🌸

int leb_read_lock (struct ubi_device *ubi , int vol_id , int lnum );

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🎀 ARGUMENTS 🎀

• ubi — the UBI device description object 🫶 like, the whole device's info struct, that's her
• vol_id — the volume ID 🔥 which volume we're talking about
• lnum — the logical eraseblock number ⭐ the specific block, bestie

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💖 DESCRIPTION 💖

okay so real talk: this function locks a logical eraseblock for reading. that's the whole vibe. it's giving "reserve your spot in the group chat so nobody writes over your message" energy 🦋

returns zero in case of success — slay, we love a 0 — and a negative error code in case of failure. no cap, that's it. negative number = something went wrong, go check it 🙈

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👑 SEE ALSO 👑

so many siblings, bestie, it's a whole family reunion 💀 and yes, the kernel file it lives in is ./drivers/mtd/ubi/eba.c — that's the address, periodt.

• struct ubi_eba_entry(9)
• struct ubi_eba_table(9)
• ubi_next_sqnum(9)
• ubi_get_compat(9)
• ubi_eba_get_ldesc(9)
• ubi_eba_create_table(9)
• ubi_eba_destroy_table(9)
• ubi_eba_copy_table(9)
• ubi_eba_replace_table(9)
• ltree_lookup(9)
• ltree_add_entry(9)
• leb_read_unlock(9)
• leb_write_lock(9)
• leb_write_trylock(9)
• leb_write_unlock(9)
• ubi_eba_is_mapped(9)
• ubi_eba_unmap_leb(9)
• check_mapping(9)
• ubi_eba_read_leb(9)
• ubi_eba_read_leb_sg(9)
• try_recover_peb(9)
• recover_peb(9)
• try_write_vid_and_data(9)
• ubi_eba_write_leb(9)
• ubi_eba_write_leb_st(9)
• is_error_sane(9)
• ubi_eba_copy_leb(9)
• print_rsvd_warning(9)
• self_check_eba(9)
• ubi_eba_init(9)

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that's the whole page, bestie — go forth and read-lock responsibly 💜

this cutie lives in ./drivers/mtd/ubi, dated October 2026 🎀 xoxo, the kernel API man page, mwah 💋