ecryptfs_init_crypt_ctx(9)

💅 ecryptfs_init_crypt_ctx — the kernel API manual, bestie edition

okay so bestie, we're in the kernel API manual (section 9, lowercase-g gang) and today's main character is ecryptfs_init_crypt_ctx. literally the crypto-context glow-up function. let's get into it 🎀

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✨ SYNOPSIS ✨

int ecryptfs_init_crypt_ctx (struct ecryptfs_crypt_stat *crypt_stat );

that's it. that's the whole vibe. returns an int, takes one pointer, absolutely slays 🫶

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🌸 ARGUMENTS 🌸

• crypt_stat — an Uninitialized crypt stats structure. yes bestie, uninitialized — that's the whole point, this function is literally the one that fixes that. it's giving "before" photo energy 💅

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🦋 DESCRIPTION 🦋

Initialize the crypto context. that's the assignment. that's the whole assignment. iconic, honestly ✨

TODO: Performance: Keep a cache of initialized cipher contexts; only init if needed 😭

so yeah — the manpage itself is out here admitting there's a performance TODO on the books: keep a cache of initialized cipher contexts, and only init if needed. ngl that's a mood. future-you's problem, but it's written down so like, it's fine 🙈

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🌈 SEE ALSO 🌈

okay this is the part where the friend group shows up. the Kernel file ./fs/ecryptfs/crypto.c is the home base, and then:

• ecryptfs_from_hex(9)
• ecryptfs_derive_iv(9)
• ecryptfs_init_crypt_stat(9)
• ecryptfs_destroy_crypt_stat(9)
• virt_to_scatterlist(9)
• crypt_scatterlist(9)
• crypt_extent(9)
• ecryptfs_encrypt_page(9)
• ecryptfs_decrypt_page(9)
• ecryptfs_copy_mount_wide_flags_to_inode_flags(9)
• ecryptfs_set_default_crypt_stat_vals(9)
• ecryptfs_new_file_context(9)
• ecryptfs_validate_marker(9)
• ecryptfs_process_flags(9)
• write_ecryptfs_marker(9)
• ecryptfs_code_for_cipher_string(9)
• ecryptfs_cipher_code_to_string(9)
• ecryptfs_write_headers_virt(9)
• ecryptfs_write_metadata(9)
• set_default_header_data(9)
• ecryptfs_read_headers_virt(9)
• ecryptfs_read_xattr_region(9)
• ecryptfs_process_key_cipher(9)
• ecryptfs_destroy_crypto(9)
• ecryptfs_tfm_exists(9)
• ecryptfs_get_tfm_and_mutex_for_cipher_name(9)
• ecryptfs_encode_for_filename(9)
• ecryptfs_decode_from_filename(9)
• ecryptfs_encrypt_and_encode_filename(9)
• ecryptfs_decode_and_decrypt_filename(9)

like. that's the whole squad. every single one of them, no cap, iykyk 💀✨

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and that's the page, bestie!! 🍓 this one comes to you from ./fs/ecryptfs, dated October 2026, and it's ecryptfs_init_crypt_ctx(9) all the way down. go init those crypto contexts, you absolute king 👑💖