ecryptfs_par...ag_70_packet(9)

💅 ecryptfs_parse_tag_70_packet(9) 💅

okay bestie, buckle up — we're in the Kernel API Manual today and this one's a whole function. no cap, it's giving "cryptographic packet parser that knows exactly what it's doing" and honestly? we're obsessed 🎀

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✨ NAME ✨

ecryptfs_parse_tag_70_packet — literally just parses and processes an FNEK-encrypted passphrase packet. that's the whole vibe. 💖

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🌸 SYNOPSIS 🌸

int ecryptfs_parse_tag_70_packet (char **filename , size_t
*filename_size , size_t *packet_size , struct ecryptfs_mount_crypt_stat
*mount_crypt_stat , char *data , size_t max_packet_size );

she takes six args and returns an int, periodt. 💅

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🦋 ARGUMENTS 🦋

• filename — bestie, this function kmalloc's the memory for the filename. it's literally allocating it for you, so you don't have to 🫶
• filename_size — this one gets set to the amount of memory that got kmalloc'd for the filename. so this pointer comes back knowing the size, iykyk.
• packet_size — set to the number of octets in the packet that got parsed. octets!! not bytes, octets. respectful. ✨
• mount_crypt_stat — the mount-wide cryptographic context. like the big-picture crypto mood board for the whole mount 💜
• data — the memory location holding the start of the tag 70 packet. this is where the actual packet lives 🎀
• max_packet_size — the maximum legal size of the packet to be parsed from data. key word legal, so don't be out here passing shady sizes 🙈

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🔥 DESCRIPTION 🔥

Returns zero on success; non-zero otherwise.

that's it. that's the description. iconic honestly — she said "my return value speaks for itself" and moved on 💀

lowkey the most important line on this whole page though, so don't skip the vibe check on that return value 🧚

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⭐ SEE ALSO ⭐

Kernel file ./fs/ecryptfs/keystore.c, plus the whole extended friend group:

• ecryptfs_parse_packet_length(9)
• ecryptfs_write_packet_length(9)
• ecryptfs_verify_version(9)
• ecryptfs_verify_auth_tok_from_key(9)
• ecryptfs_find_auth_tok_for_sig(9)
• decrypt_pki_encrypted_session_key(9)
• parse_tag_1_packet(9)
• parse_tag_3_packet(9)
• parse_tag_11_packet(9)
• decrypt_passphrase_encrypted_session_key(9)
• ecryptfs_parse_packet_set(9)
• write_tag_1_packet(9)
• write_tag_11_packet(9)
• write_tag_3_packet(9)
• ecryptfs_generate_key_packet_set(9)

not me listing fifteen cross-references like it's a group chat roll call 😭 but every single one of them ate, fr fr 🔥

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and that's the whole page, babe 🌈 brought to you by the fine folks over in ./fs/ecryptfs, dated October 2026 — so go forth, parse that tag 70 packet, and slay 👑💖