tty_kopen_exclusive(9)

✨ NAME ✨

okay bestie 💖 welcome to the tty_kopen_exclusive(9) page in the Kernel API Manual — manual name folded in near the top, no cap. This function’s whole deal is opening a tty device for kernel 🎀.

🦋 SYNOPSIS 🦋

struct tty_struct * tty_kopen_exclusive (dev_t device );

🎀 ARGUMENTS 🎀

• device — the dev_t of the device to open. That’s the argument, bestie 🫶.

💅 DESCRIPTION 💅

okay so tty_kopen_exclusive opens a tty exclusively for kernel. It performs the driver lookup, makes sure it’s not already opened, and performs the first-time tty initialization. It’s giving “kernel-only lane, please” energy 👑.

It also claims the global tty_mutex to serialize:

• concurrent first-time tty initialization
• concurrent tty driver removal w/ lookup
• concurrent tty removal from driver table

No cap, that mutex is the main-character bodyguard for those concurrent situations 🫶.

⭐ RETURN ⭐

Returns the locked initialized tty_struct — literally that exact thing, periodt 💖.

🌈 SEE ALSO 🌈

Like, the SEE ALSO section is a whole group chat. The Kernel file ./drivers/tty/tty_io.c is in there, along with: free_tty_struct(9), tty_free_file(9), tty_name(9), get_tty_driver(9), tty_dev_name_to_number(9), tty_find_polling_driver(9), tty_wakeup(9), tty_release_redirect(9), __tty_hangup(9), tty_hangup(9), tty_vhangup(9), tty_vhangup_self(9), tty_vhangup_session(9), tty_hung_up_p(9), stop_tty(9), start_tty(9), tty_read(9), tty_write(9), tty_send_xchar(9), pty_line_name(9), tty_line_name(9), tty_driver_lookup_tty(9), tty_init_termios(9), tty_standard_install(9), tty_driver_install_tty(9), tty_driver_remove_tty(9), tty_reopen(9), tty_init_dev(9), tty_save_termios(9), tty_flush_works(9), release_one_tty(9), tty_kref_put(9), release_tty(9), tty_release_checks(9), tty_kclose(9), tty_release_struct(9), tty_release(9), tty_open_current_tty(9), tty_lookup_driver(9), tty_kopen_shared(9), tty_open_by_driver(9), tty_open(9), tty_poll(9), tiocsti(9), tiocgwinsz(9), tty_do_resize(9), tiocswinsz(9), tioccons(9), tiocsetd(9), tiocgetd(9), send_break(9), tty_get_tiocm(9), tty_tiocmget(9), tty_tiocmset(9), tty_get_icount(9), alloc_tty_struct(9), tty_put_char(9), tty_register_device(9), tty_register_device_attr(9), tty_unregister_device(9), __tty_alloc_driver(9), tty_driver_kref_put(9), tty_register_driver(9), tty_unregister_driver(9).

mwah 💖 that’s the whole page, bestie. This cutie comes from the Kernel API Manual, page tty_kopen_exclusive(9), source path ./drivers/tty, dated October 2026. byeee 🫶🌸