tty_set_termios(9)

💅 tty_set_termios 💅

okay bestie, so you've stumbled into the Kernel API Manual and this page is all about tty_set_termios — and honestly? it's giving "small function, big responsibility." let's get into it 🫶

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✨ NAME ✨

tty_set_termios — update termios values. that's it, that's the whole vibe. it updates the termios values. slay 💖

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🌸 SYNOPSIS 🌸

int tty_set_termios (struct tty_struct *tty , struct ktermios
*new_termios );

like, one function, two args, returns an int. clean. iconic. no notes ✨

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🎀 ARGUMENTS 🎀

• tty — the tty you're updating. the main character, fr fr 🎀
• new_termios — the desired new value. i.e. where you want the termios to end up after this whole glow-up 💅

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🦋 DESCRIPTION 🦋

so what does it actually do? it performs updates to the termios values set on this tty. lowkey straightforward, highkey important 😌

⚠️ okay but listen — a master pty's termios should never be set. like, never ever. not a vibe check you want to fail, bestie. 🚫

Locking: tty_struct->termios_rwsem — yes she locks, and yes you should care. read the locking note before you go touching stuff 🙈

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🔥 SEE ALSO 🔥

the kernel file lives at ./drivers/tty/tty_ioctl.c, and here's the whole squad of related fns — go read up, iykyk 👑

• tty_chars_in_buffer(9)
• tty_write_room(9)
• tty_driver_flush_buffer(9)
• tty_unthrottle(9)
• tty_throttle_safe(9)
• tty_unthrottle_safe(9)
• tty_wait_until_sent(9)
• tty_termios_copy_hw(9)
• tty_termios_hw_change(9)
• tty_get_char_size(9)
• tty_get_frame_size(9)
• set_termios(9)
• set_sgttyb(9)
• tty_change_softcar(9)
• tty_mode_ioctl(9)

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okay that's the page!! go forth and set those termios correctly, bestie — this one's from ./drivers/tty, dated October 2026, and it ate, no cap 🌈💜