捕获所有将停止程序的信号

Question

I've got a program to catch any terminating signals. Currently all it does is catch Ctrl + C . I want to be able to catch Ctrl + Z and Ctrl + \\ in addition to Ctrl + C . Here's part of my code.

if (signal(SIGINT, SIG_IGN) == SIG_ERR)
    fprintf(stderr,"Error: Can't catch SIGINT\n");

if (signal(SIGTERM, SIG_IGN) == SIG_ERR)
    fprintf(stderr,"Error: Can't catch SIGTERM\n");

// do stuff

What other signals to I need to implement to catch Ctrl + Z and Ctrl + \\ ? And what raises SIGTERM ? Thanks in advance.

Answer 1

Ctrl+Z raises SIGTSTP. Ctrl+\\ raises SIGQUIT.

I don't know of any key combination that raises SIGTERM, but of course you can send it using kill -TERM <pid> replacing <pid> with the process ID. (Or just kill <pid> ; SIGTERM is the default signal for kill )

Note that you can't catch SIGSTOP nor SIGKILL.