ubifs_check_hmac(9)

💅 ubifs_check_hmac — like, the kernel API manual, bestie ✨

okay so you're in the ubifs_check_hmac(9) glow-up era of the Kernel API Manual and honestly? iconic. this is the page where we compare two HMACs and you find out if they're giving the same energy or not 🫶

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✨ NAME ✨

ubifs_check_hmac — literally just compare two HMACs, that's the whole vibe check 💖

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🌸 SYNOPSIS 🌸

int ubifs_check_hmac (const struct ubifs_info *c , const u8 *expected ,
       const u8 *got );

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🎀 ARGUMENTS 🎀

• c — the UBIFS file-system description object, aka the main character of this whole situation 👑
• expected — the first HMAC, the one you're hoping it matches 🥺
• got — the second HMAC, the one reality actually handed you 💀

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🦋 DESCRIPTION 🦋

Compare two hashes, expected and got. that's it, that's the function. no cap, it's a whole little moment of truth where the two of them get held up next to each other 🌈

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⭐ RETURN ⭐

• 0 when they are equal — slay, they match, we love a harmonious outcome 💅
• a negative error code otherwise — not me, not the match, tragic but honestly expected 😭

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🔥 SEE ALSO 🔥

Kernel file ./fs/ubifs/ubifs.h plus the entire friend group, fr fr:

• struct ubifs_old_idx(9)
• struct ubifs_scan_node(9)
• struct ubifs_scan_leb(9)
• struct ubifs_gced_idx_leb(9)
• struct ubifs_inode(9)
• struct ubifs_unclean_leb(9)
• struct ubifs_lprops(9)
• struct ubifs_lpt_lprops(9)
• struct ubifs_lp_stats(9)
• struct ubifs_cnode(9)
• struct ubifs_pnode(9)
• struct ubifs_nbranch(9)
• struct ubifs_nnode(9)
• struct ubifs_lpt_heap(9)
• struct ubifs_wbuf(9)
• struct ubifs_bud(9)
• struct ubifs_jhead(9)
• struct ubifs_zbranch(9)
• struct ubifs_znode(9)
• struct bu_info(9)
• struct ubifs_node_range(9)
• struct ubifs_compressor(9)
• struct ubifs_budget_req(9)
• struct ubifs_orphan(9)
• struct ubifs_mount_opts(9)
• struct ubifs_budg_info(9)
• struct ubifs_stats_info(9)
• struct ubifs_info(9)
• ubifs_check_hash(9)
• ubifs_branch_hash(9)
• ubifs_copy_hash(9)
• ubifs_auth_node_sz(9)

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okay but seriously bestie, go read them if you wanna actually understand the file system 💜 this page is a snack, not the whole meal 🍓

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and that's the whole page, mwah 💋 — brought to you by <rainbow>./fs/ubifs</rainbow>, dated October 2026, man page ubifs_check_hmac(9). go be great, ily, bye 🧚✨