key_write_idx(9)
π key_write_idx(9) β like, the whole manual, but make it make sense
okay so real talk: this is key_write_idx from the Kernel API Manual (that's the manual name, bestie, we're in the kernel section π§), and it's genuinely one of those tiny lil functions that does one job and does it slayfully. no drama, no surprises β it just takes a key that's chilling in in-memory format and transforms it into the format the index wants. periodt. π
β¨ NAME β¨
key_write_idx β transform a key from in-memory format for the index. that's it. that's the whole vibe. π
πΈ SYNOPSIS πΈ
void key_write_idx (const struct ubifs_info *c , const union ubifs_key
*from , void *to );
it returns void, so likeβ¦ don't go looking for a return value, she gives you nothing back and she's iconic for it π«Ά
π¦ ARGUMENTS π¦
cβ the UBIFS file-system description object. your context, your main character, the whole setting of the scene β¨fromβ the key to transform. this is the one getting the glow-up πtoβ the key to store the result. this is where the transformed key lands, no cap π
π₯ SEE ALSO π₯
okay this is the part where the page just. lists everyone. the whole friend group. all of them live in the kernel file ./fs/ubifs/key.h, and honestly the way this roster goes onβ¦ it's giving group chat with 33 members and everyone's typing π
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(9)key_block_flash(9)key_read(9)key_write(9)key_copy(9)keys_cmp(9)keys_eq(9)is_hash_key(9)key_max_inode_size(9)
like?? thirty-three entries. she said "let me introduce you to everybody" and then actually did it π but fr fr, if you're poking around keys in UBIFS, this is your reading list and every single one of them is right there in ./fs/ubifs/key.h π§
ngl there's noRETURN VALUEsection and noERRORSsection here β the function isvoid, so there's literally nothing coming back. don't manifest a return code that isn't in the source, bestie π
π the sign-off π
and that's the page!! sourced from ./fs/ubifs, stamped October 2026, and yeah the footer still says key_write_idx(9) because the footer is nothing if not consistent π go transform some keys, you absolute legend β mwah ππβ
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms