ubifs_encrypt(9)

💖 ubifs_encrypt(9) 💖

ok so bestie, this is a page straight out of the Kernel API Manual — yes, the kernel, the big one. it's called ubifs_encrypt, and ngl the name is kind of a spoiler: it encrypts data. that's the whole vibe. let's get into it 🫶

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✨ SYNOPSIS ✨

int ubifs_encrypt (const struct inode *inode , struct ubifs_data_node
*dn , unsigned int in_len , unsigned int *out_len , int block );

that's the signature, copy it exactly, don't be weird about it 💅

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🎀 ARGUMENTS 🎀

• inode — the inode that refers to the data node. like, the inode is the one holding the aux cable here 🔌
• dn — the data node you're gonna encrypt. this is the main character of the function fr fr
• in_len — length of data to be compressed. yes, compressed, that's what it says, that's the fact, we don't editorialize 🌸
• out_len — the allocated memory size for the data area of dn. think of it as "how much room does dn's data area actually have" 👑
• block — the logical block number of the block. iconic little int, knows its address 😌

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🦋 DESCRIPTION 🦋

okay so here's the tea: this function encrypts a possibly-compressed data inside the data node. so the data might already be compressed, might not be — either way, it gets encrypted, no cap 🔥

and the encrypted data length? that gets stored in out_len. the way that it writes the length back through the pointer is honestly so real of it ✨

lowkey important: out_len isn't just an output, it comes in carrying the allocated memory size for dn's data area — so it's doing double duty. respect the hustle 🙈

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⭐ SEE ALSO ⭐

• Kernel file ./fs/ubifs/crypto.c — go read the source bestie, it's giving lore 📖

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and that's the whole page!! 🧚 source: ./fs/ubifs, dated October 2026 — mwah, sending you a lil kiss, go encrypt something responsibly 💖🎀🌸