tty_signal_session_leader(9)

🌸 NAME 🌸

okay bestie, meet tty_signal_session_leader from the Kernel API Manual — literally the function that sends SIGHUP to the session leader. no cap, that's the whole name vibe. 💅

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✨ SYNOPSIS ✨

int tty_signal_session_leader (struct tty_struct *tty , int exit_session
);

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🎀 ARGUMENTS 🎀

• tty — the controlling tty. that's the whole argument, bestie 🫶
• exit_session — if it's non-zero, signal all foreground group processes. yes ma'am ✨

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💅 DESCRIPTION 💅

so here's the tea: this sends SIGHUP and SIGCONT to the session leader and its process group. optionally, it also signals all processes in the foreground process group. iconic behavior, honestly. 🔥

it returns the number of processes in the session that have this tty as their controlling terminal. that value is used to drop tty references for those processes. periodt. 💖

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🔥 SEE ALSO 🔥

the kernel file is ./drivers/tty/tty_jobctrl.c, and the whole related crew is right here:

• __tty_check_change(9)
• __proc_set_tty(9)
• disassociate_ctty(9)
• tiocsctty(9)
• tty_get_pgrp(9)
• tiocgpgrp(9)
• tiocspgrp(9)
• tiocgsid(9)

go off, kernel fam 👑🌈

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byeee 🫶 this cutie lives under ./drivers/tty and is dated October 2026 — mwah 💋