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SYS_TGKILL(9) Driver Basics SYS_TGKILL(9)

NAME

sys_tgkill - send signal to one specific thread

SYNOPSIS

long sys_tgkill(pid_t tgid, pid_t pid, int sig);

ARGUMENTS

tgid
the thread group ID of the thread
pid
the PID of the thread
sig
signal to be sent

DESCRIPTION

This syscall also checks the tgid and returns -ESRCH even if the PID exists but it's not belonging to the target process anymore. This method solves the problem of threads exiting and PIDs getting reused.

COPYRIGHT

February 2017 Kernel Hackers Manual 3.16