This graph shows which files directly or indirectly include this file:

Functions
void	sighand_chld (int sig)
void	sighand_segv (int sig)
void	let_em_die (int pid)
void	make_em_die (int sig)

Variables
void(*)(int)	openvas_signal (int signum, void(*handler)(int))

Detailed Description

headerfile for sighand.c.

Definition in file sighand.h.

Function Documentation

◆ let_em_die()

void let_em_die ( int pid )

Definition at line 32 of file sighand.c.

{
  int status;
 
  waitpid (pid, &status, WNOHANG);
}

References pid.

Referenced by make_em_die().

Here is the caller graph for this function:

◆ make_em_die()

void make_em_die ( int sig )

Definition at line 40 of file sighand.c.

{
  /* number of times, the sig is sent at most */
  int n = 3;
 
  /* leave if we are session leader */
  if (getpgrp () != getpid ())
    return;
 
  /* quickly send signals and check the result */
  if (kill (0, sig) < 0)
    return;
  let_em_die (0);
  if (kill (0, 0) < 0)
    return;
 
  do
    {
      /* send the signal to everybody in the group */
      if (kill (0, sig) < 0)
        return;
      sleep (1);
      /* do not leave a zombie, hanging around if possible */
      let_em_die (0);
    }
  while (--n > 0);
 
  if (kill (0, 0) < 0)
    return;
 
  kill (0, SIGKILL);
  sleep (1);
  let_em_die (0);
}

References let_em_die().

Referenced by init_child_signal_handlers(), and sighand_segv().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ sighand_chld()

void sighand_chld ( int sig )

Definition at line 95 of file sighand.c.

{
  (void) sig;
  // if we call multiple times waitpid it will disturb the attack loop.
  // therefore we cannot cleanup multiple ipc here
  waitpid (-1, NULL, WNOHANG);
}

Referenced by init_signal_handlers().

Here is the caller graph for this function:

◆ sighand_segv()

void sighand_segv ( int sig )

Definition at line 123 of file sighand.c.

{
  print_trace ();
  make_em_die (SIGTERM);
  gvm_close_sentry ();
  /* Raise signal again, to exit with the correct return value,
   * and to enable core dumping. */
  openvas_signal (given_signal, SIG_DFL);
  raise (given_signal);
}