tty_ldisc_open(9)

💖 tty_ldisc_open 💖

okay bestie, so this one is from the Kernel API Manual, and it's called tty_ldisc_open — and yes, it does exactly what the name says: it opens a line discipline ✨

🌸 SYNOPSIS 🌸

int tty_ldisc_open (struct tty_struct *tty , struct tty_ldisc *ld );

🎀 ARGUMENTS 🎀

• tty — the tty we're opening the ldisc on 🫶 (yes, that's the whole vibe, it's the tty in question)
• ld — the discipline to open 👑

🦋 DESCRIPTION 🦋

so this is a little helper opening method — think of it as the designated opener 💅 and lowkey it doubles as a super convenient debugging and check point, which, honestly? iconic. it's giving "small function, big responsibilities."

Locking: real talk, bestie — this is always called with BTM already held. no cap, not optional, not negotiable. it's already locked when it gets called, periodt. 🔒

⭐ SEE ALSO ⭐

the whole squad, in the kernel file ./drivers/tty/tty_ldisc.c:

• tty_register_ldisc(9)
• tty_unregister_ldisc(9)
• tty_ldisc_get(9)
• tty_ldisc_put(9)
• tty_ldisc_ref_wait(9)
• tty_ldisc_ref(9)
• tty_ldisc_deref(9)
• tty_ldisc_flush(9)
• tty_set_termios_ldisc(9)
• tty_ldisc_close(9)
• tty_ldisc_failto(9)
• tty_ldisc_restore(9)
• tty_set_ldisc(9)
• tty_ldisc_kill(9)
• tty_reset_termios(9)
• tty_ldisc_reinit(9)
• tty_ldisc_hangup(9)
• tty_ldisc_setup(9)
• tty_ldisc_release(9)
• tty_ldisc_init(9)
• tty_ldisc_deinit(9)

like literally all of them live in ./drivers/tty 🌈 and this page is dated October 2026, with the manual page being tty_ldisc_open(9) 🎀 go read the others too, iykyk 💖 mwah! 💅✨