40 lines
1 KiB
C
40 lines
1 KiB
C
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// A C program that does not terminate from an interrupt signal.
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// Usually pressing Ctrl-C sends this to the foreground program.
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//
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// To stop this program from running, open another terminal and try
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// > pkill -9 a.out
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// assuming you named the output program a.out
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#include <stdio.h>
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#include <signal.h>
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#include <unistd.h>
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// Function run when a SIGINT is sent to the program
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void handle_SIGINT(int sig_num) {
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// Reset handler to catch SIGINT next time.
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signal(SIGINT, handle_SIGINT);
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printf("\nNo SIGINT-erruptions allowed.\n");
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fflush(stdout);
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}
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// Function run when a SIGTERM is sent to the program
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void handle_SIGTERM(int sig_num) {
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// Reset handler to catch SIGTERM next time.
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signal(SIGTERM, handle_SIGTERM);
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printf("\nTry to SIGTERM me? Piss off!\n");
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fflush(stdout);
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}
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int main () {
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// Set handling functions for programs
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signal(SIGINT, handle_SIGINT);
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signal(SIGTERM, handle_SIGTERM);
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/* Infinite loop */
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while(1) {
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sleep(1);
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printf("Ma-na na-na!\n");
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fflush(stdout);
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}
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return 0;
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}
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