parse_tag_1_packet(9)

🎀 parse_tag_1_packet(9) 🎀

okay so bestie, welcome to the Kernel API Manual ✨ — yes the actual manual name, we're fancy here. today's main character is parse_tag_1_packet, and she is very specific about her arguments, so buckle up 🫶

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🌸 NAME 🌸

parse_tag_1_packet —

and honestly? the original page gives you literally NOTHING after that dash 😭 like the description is just vibes and a hyphen. no cap. so we're gonna go straight to the synopsis, which is where the real tea is 💅

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⭐ SYNOPSIS ⭐

int parse_tag_1_packet (struct ecryptfs_crypt_stat *crypt_stat ,
unsigned char *data , struct list_head *auth_tok_list , struct
ecryptfs_auth_tok **new_auth_tok , size_t *packet_size , size_t
max_packet_size );

six arguments, one int return, she's giving "i have a lot going on but i'm handling it" 🔥

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🦋 ARGUMENTS 🦋

• crypt_stat — the cryptographic context, and this function is gonna modify it based on whatever's inside the packet. so yeah, she's not just reading, she's editing. main character energy 💖
• data — the raw bytes of the packet. literally just the bytes, the whole bytes, nothing but the bytes 🙈
• auth_tok_list — so eCryptfs parses packets into authentication tokens, right? and for this packet, a new authentication token gets placed at the end of this list. end of list = where the new girl sits 🎀
• new_auth_tok — pointer to a pointer to memory that this function allocates. it sets the memory address of the pointer to NULL on error (important!! 😭). this object gets added to the auth_tok_list.
• packet_size — this function writes the size of the parsed packet into this memory location. zero on error. so if you see a 0, something went sideways 💀
• max_packet_size — the maximum allowable packet size. the ceiling. the limit. respect it ✨

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👑 DESCRIPTION 👑

Returns zero on success; non-zero on error.

that's it. that's the whole description. short and iconic, honestly 🌈

lowkey the whole page is basically "here are my six arguments, here's my return value, bye" and i respect the minimalism fr fr 💅

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🌸 SEE ALSO 🌸

• Kernel file ./fs/ecryptfs/keystore.c
• 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)
• ecryptfs_parse_tag_70_packet(9)
• decrypt_pki_encrypted_session_key(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)

like a whole friend group of packet functions, and she's the tag-1 one 🧚 iykyk 🦋

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and that's the page!! it lives in ./fs/ecryptfs and it's dated October 2026 — so mark your calendar bestie, this one's from the future ⭐💜 bye bye 🫶🎀