key_block(9)

💅 key_block(9) — Kernel API Manual

okay so bestie, welcome to key_block(9) from the Kernel API Manual ✨ this one's a tiny little icon, a one-job wonder, and honestly? we respect a function that knows exactly what it wants 🎀

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🌸 NAME

key_block — get data block number. that's it. that's the whole gig 💖

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✨ SYNOPSIS

unsigned int key_block (const struct ubifs_info *c , const union
ubifs_key *key );

like literally so simple, she takes two things and hands you back an unsigned int 🫶

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🦋 ARGUMENTS

• c — the UBIFS file-system description object, your whole entire filesystem's vibe in one struct 💫
• key — the key you want the block number from, give her the key and she'll spill the block 🔑

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🧚 SEE ALSO

okay this is the part where I introduce you to the whole friend group, they all live in the Kernel file ./fs/ubifs/key.h and they're all slay 👑

• key_mask_hash(9)
• key_r5_hash(9)
• key_test_hash(9)
• ino_key_init(9)
• ino_key_init_flash(9)
• lowest_ino_key(9)
• highest_ino_key(9)
• dent_key_init(9)
• dent_key_init_hash(9)
• dent_key_init_flash(9)
• lowest_dent_key(9)
• xent_key_init(9)
• xent_key_init_flash(9)
• lowest_xent_key(9)
• data_key_init(9)
• highest_data_key(9)
• trun_key_init(9)
• invalid_key_init(9)
• key_type(9)
• key_type_flash(9)
• key_inum(9)
• key_inum_flash(9)
• key_hash(9)
• key_hash_flash(9)
• key_block_flash(9)
• key_read(9)
• key_write(9)
• key_write_idx(9)
• key_copy(9)
• keys_cmp(9)
• keys_eq(9)
• is_hash_key(9)
• key_max_inode_size(9)

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ngl bestie, if you only remember one thing: key_block grabs the block number out of a key. everything else on that list is just the extended fam 💀

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and that's the page!! brought to you by ./fs/ubifs, dated October 2026, and filed under key_block(9) — mwah, go read some more kernel docs, ily 🌈💜🍓