n_hdlc_tty_write(9)

💅 n_hdlc_tty_write(9) — Kernel API Manual 💅

okay bestie, welcome to the Kernel API Manual page for n_hdlc_tty_write(9) — the function that is literally here to write a single frame of data to device. ✨

🎀 NAME 🎀

n_hdlc_tty_write — write a single frame of data to device. That's the whole name vibe, periodt. 💖

✨ SYNOPSIS ✨

Bestie, here's the exact signature, don't let the commas scare you:

ssize_t n_hdlc_tty_write (struct tty_struct *tty , struct file *file ,
       const u8 *data , size_t count );

🦋 ARGUMENTS 🦋

• tty — pointer to associated tty device instance data. Your tty's whole identity. 💅
• file — pointer to file object data. The file object in question, lowkey important. 🎀
• data — pointer to transmit data (one frame). Just one frame, okay? One. 🫶
• count — size of transmit frame in bytes. The byte count, no cap. 🔥

🌸 DESCRIPTION 🌸

Returns the number of bytes written (or error code). That's it — short and iconic. ✨

🌈 SEE ALSO 🌈

Go read these next, bestie — they're all part of the same n_hdlc friend group:

• Kernel file ./drivers/tty/n_hdlc.c struct n_hdlc(9)
• n_hdlc_tty_close(9)
• n_hdlc_tty_open(9)
• n_hdlc_send_frames(9)
• n_hdlc_tty_write_work(9)
• n_hdlc_tty_wakeup(9)
• n_hdlc_tty_receive(9)
• n_hdlc_tty_read(9)
• n_hdlc_tty_ioctl(9)
• n_hdlc_tty_poll(9)
• n_hdlc_alloc(9)
• n_hdlc_buf_return(9)
• n_hdlc_buf_put(9)
• n_hdlc_buf_get(9)

xoxo, your kernel bestie 💖 — source/version: ./drivers/tty; date: October 2026. 🦋