a) Consider the code in Figure 2 (with lines numbered 1 - 34) and answer the questions below related to processes and signals in C. 1 #include 2 #include 3 #include 4 #include 5 #include 6 tinclude 7 8 void last wishes (int s) { 9 puts ("Goodbye and have a good day!!! "); 10 exit(1); 11 1 12 int catch_signal (int sig, void (*handler) (int)) { 13 struct sigaction action; 14 action.sa_handler - handler; 15 sigemptyset (&action.sa_mask); 16 action.sa_flags - 0; 17 return sigaction (sig, &action, NULL); 18 ) 19 int main() { 20 pid_t pid; 21 int stat, i-0; 22 catch_signal (SIGINT, last_wishes); 23 if ((pid - fork()) -- 0) 24 while (1) 25 i++; 26 printf ("Generating message *d ", i); 27 > 28 ) 29 else { 30 kill (pid, SIGINT); 31 printf(" process was terminated by SIGINT!!! ); 32 ) 33 return 0; 34 1 Figure 2 i) Indicate which process(es) handle(s) the signal. Explain your answer by describing when the signal is registered, sent and what happens after. ii) Explain the activities performed by the child process and all its outputs. iii) Describe the semantics of line 30 and explain the parameters of the function in relation to the program shown in Figure 2. iv) Complete the statement in line 31 and indicate which process(es) perform(s) this output (11 marks]