tty_read(9)

💖 tty_read(9) — read method for tty device files 💖

okay bestie, welcome to the tty_read(9) page from the Kernel API Manual 🫶 this is the one about reading from tty device files, and yes it's giving main character energy ✨

🌸 NAME 🌸

tty_read - read method for tty device files 💅

✨ SYNOPSIS ✨

no cap, here's the exact signature:

ssize_t tty_read (struct kiocb *iocb , struct iov_iter *to );

🫶 ARGUMENTS 🫶

• iocb — kernel I/O control block 💖
• to — destination for the data read 🎀

💅 DESCRIPTION 💅

So what it does: it performs the read system call function on this terminal device. It checks for hung up devices before calling the line discipline method — like it does the "are u okay??" vibe check first, periodt 💀

Locking: it locks the line discipline internally while needed. Multiple read calls may be outstanding in parallel, which is lowkey iconic 👑

🎀 SEE ALSO 🎀

Kernel file ./drivers/tty/tty_io.c

the whole squad, in order:

• 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_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_exclusive(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)

big kisses from tty_read(9) 💜 sourced from ./drivers/tty, dated October 2026 — that's the cute sign-off, bestie, we're done 🦋✨