ecryptfs_wait_for_response(9)

💌 ecryptfs_wait_for_response(9) — the Kernel API Manual moment

okay so bestie, picture this: you sent a message into userspace and now you're just standing there waiting for a reply like a girl waiting for a text back 😭 this function is literally the "read receipt watcher" of eCryptfs, and it lives in the Kernel API Manual, section 9. let's get into it 💅

---

✨ SYNOPSIS ✨

int ecryptfs_wait_for_response (struct ecryptfs_msg_ctx *msg_ctx ,
       struct ecryptfs_message **msg );

yeah that's the whole vibe check. returns an int, takes two args, no cap 🫶

---

🎀 ARGUMENTS 🎀

• msg_ctx — the context that was assigned when sending a message. like, the little ID bracelet your message got at the door ✨
• msg — the incoming message from userspace 🦋 not set if rc != 0, so don't go reading it when the return code is sus 🙈

---

🌸 DESCRIPTION 🌸

so basically this thing sleeps 😴 until it gets awakened by ecryptfs_receive_message, OR until the amount of time goes past ecryptfs_message_wait_timeout — whichever comes first, periodt.

if it returns zero, then msg will point to a valid message from userspace 🎉 — a real one, an actual reply, iconic.

a non-zero value gets returned when it fails to receive a message, or when an error happens 💀

⚠️ real talk: on success, the callee must free msg. yes you. it's your message now, you clean it up, no leaving it in the group chat 🧹✨

---

🔥 SEE ALSO 🔥

the lore continues in the kernel file ./fs/ecryptfs/messaging.c — go read it, iykyk 👑

• ecryptfs_acquire_free_msg_ctx(9)
• ecryptfs_msg_ctx_free_to_alloc(9)
• ecryptfs_msg_ctx_alloc_to_free(9)
• ecryptfs_find_daemon_by_euid(9)
• ecryptfs_spawn_daemon(9)
• ecryptfs_process_response(9)
• ecryptfs_send_message_locked(9)
• ecryptfs_send_message(9)

---

and that's the page babes 💖 brought to you by ./fs/ecryptfs, dated October 2026, and yes the title card says ecryptfs_wait_for_response(9) — slay, stay hydrated, and always free your msg 🌈⭐🍓