1TRACEHOOK_GET_SIGNAL(9)        Kernel Internals        TRACEHOOK_GET_SIGNAL(9)
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NAME

6       tracehook_get_signal - deliver synthetic signal to traced task
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SYNOPSIS

9       int tracehook_get_signal(struct task_struct * task,
10                                struct pt_regs * regs, siginfo_t * info,
11                                struct k_sigaction * return_ka);
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ARGUMENTS

14       task
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16           current
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18       regs
19           task_pt_regs(current)
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21       info
22           details of synthetic signal
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24       return_ka
25           sigaction for synthetic signal
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DESCRIPTION

28       Return zero to check for a real pending signal normally. Return -1
29       after releasing the siglock to repeat the check. Return a signal number
30       to induce an artifical signal delivery, setting *info and *return_ka to
31       specify its details and behavior.
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33       The return_ka->sa_handler value controls the disposition of the signal,
34       no matter the signal number. For SIG_DFL, the return value is a
35       representative signal to indicate the behavior (e.g.  SIGTERM for
36       death, SIGQUIT for core dump, SIGSTOP for job control stop, SIGTSTP for
37       stop unless in an orphaned pgrp), but the signal number reported will
38       be info->si_signo instead.
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40       Called with task->sighand->siglock held, before dequeuing pending
41       signals.
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45Kernel Hackers Manual 2.6.         June 2019           TRACEHOOK_GET_SIGNAL(9)