sys_rt_sigaction(9)

💅 sys_rt_sigaction(9) 💅

okay so bestie, this is the sys_rt_sigaction(9) page from the Kernel API Manual, and it's literally about how to alter an action taken by a process. iconic. no cap. ✨

🌸 NAME 🌸

sys_rt_sigaction — alter an action taken by a process

✨ SYNOPSIS ✨

long sys_rt_sigaction (int sig , const struct sigaction __user * act ,
       struct sigaction __user * oact , size_t sigsetsize );

🎀 ARGUMENTS 🎀

• sig — signal to be sent
• act — new sigaction
• oact — used to save the previous sigaction
• sigsetsize — size of sigset_t type

👀 SEE ALSO 👀

the kernel file is ./kernel/signal.c, and the whole friend group is:

• task_set_jobctl_pending(9)
• task_clear_jobctl_trapping(9)
• task_clear_jobctl_pending(9)
• task_participate_group_stop(9)
• ptrace_trap_notify(9)
• force_sig_seccomp(9)
• do_notify_parent_cldstop(9)
• do_signal_stop(9)
• do_jobctl_trap(9)
• do_freezer_trap(9)
• signal_delivered(9)
• sys_restart_syscall(9)
• set_current_blocked(9)
• sys_rt_sigprocmask(9)
• sys_rt_sigpending(9)
• copy_siginfo_to_external32(9)
• do_sigtimedwait(9)
• sys_rt_sigtimedwait(9)
• sys_kill(9)
• sys_pidfd_send_signal(9)
• sys_tgkill(9)
• sys_tkill(9)
• sys_rt_sigqueueinfo(9)
• sys_sigpending(9)
• sys_sigprocmask(9)
• sys_rt_sigsuspend(9)

that's the whole vibe: source ./kernel, date/version October 2026, page sys_rt_sigaction(9). periodt. 🫶💖