n_hdlc_tty_ioctl(9)

💅 n_hdlc_tty_ioctl(9) 💅

okay so bestie, this is the n_hdlc_tty_ioctl(9) page from the Kernel API Manual, and it's lowkey short but highkey important. let's get into it 🫶

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🌸 NAME 🌸

n_hdlc_tty_ioctl - process IOCTL system call for the tty device.

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✨ SYNOPSIS ✨

int n_hdlc_tty_ioctl (struct tty_struct *tty , unsigned int cmd ,
       unsigned long arg );

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🎀 ARGUMENTS 🎀

• tty — pointer to tty instance data. it's giving "here's the tty bestie" energy ✨
• cmd — IOCTL command code. this is the command that decides what happens 👑
• arg — argument for IOCTL call (cmd dependent). yes, it depends on cmd, no cap 💅

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💅 DESCRIPTION 💅

Returns command dependent result.

that's literally the whole description, bestie. the result depends on the command. periodt. 💖

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🦋 SEE ALSO 🦋

• 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_write(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)

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final vibe check, bestie: this page lives under source ./drivers/tty, dated October 2026, and it's still n_hdlc_tty_ioctl(9) forever. muah 💋🎀