STRUCT LIVEUPDATE_IOCTL_CREATE_SESSION(9)

👑 struct liveupdate_ioctl_create_session(9) 👑

okay so welcome to the Kernel API Manual, bestie — today’s main character is struct liveupdate_ioctl_create_session, the struct behind ioctl(LIVEUPDATE_IOCTL_CREATE_SESSION). it’s giving “new session, who dis?” energy, and we are going to read it exactly without dropping a single field. 💅

🌸 NAME 🌸

struct liveupdate_ioctl_create_session — ioctl(LIVEUPDATE_IOCTL_CREATE_SESSION)

✨ SYNOPSIS ✨

here’s the struct in all its glory — do not rename anything, do not “fix” the fields, just vibe with it:

struct liveupdate_ioctl_create_session {
    __u32 size;
    __s32 fd;
    __u8 name[LIVEUPDATE_SESSION_NAME_LENGTH];
};

🎀 Members 🎀

• size — Input; sizeof(struct liveupdate_ioctl_create_session). yes, it’s literally the size of the struct itself, periodt.
• fd — Output; the new file descriptor for the created session. this is the little prize you get back, bestie 🎁
• name — Input; a null-terminated string for the session name, max length LIVEUPDATE_SESSION_NAME_LENGTH including termination character. so the termination character is included in that max, iykyk.

💅 Description 💅

Creates a new live update session for managing preserved resources. that’s the whole glow-up: new session, preserved resources, main character energy ✨

and bestie, listen: this ioctl can only be called on the main /dev/liveupdate device. no cap, that’s the vibe check — not some random side device, the main one. 🫶

🌈 Return 🌈

0 on success, negative error code on failure. success is a clean 0 slay; failure comes back negative, and that’s your cue to go “😭” and check the error code.

🦋 SEE ALSO 🦋

do not skip the group chat, bestie — these are all the linked lore drops:

• Kernel file ./include/uapi/linux/liveupdate.h
• General ioctl format(9)
• struct liveupdate_ioctl_retrieve_session(9)
• struct liveupdate_session_preserve_fd(9)
• struct liveupdate_session_retrieve_fd(9)
• struct liveupdate_session_finish(9)
• struct liveupdate_session_get_name(9)

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that’s the tea, fr fr 🍓 source/version: ./include/uapi/linux · date: October 2026 💖