问题描述
我正在编写一个程序，从命令行读取信号名称（例如SIGSTOP，SIGKILL等）作为字符串，并调用kill（）系统调用来发送信号。我想知道是否有一个简单的方法来将字符串转换为信号代码（在signal.h）。
I am writing a program that reads the name of the signal (e.g. SIGSTOP, SIGKILL etc) as a string from the command line and calls the kill() system call to send the signal. I was wondering if there is a simple way to convert the string to signal codes (in signal.h).
目前，我正在编写自己的地图，如下所示：
Currently, I'm doing this by writing my own map that looks like this:
signal_map["SIGSTOP"] = SIGSTOP;
signal_map["SIGKILL"] = SIGKILL;
....
但是它为所有信号写这个乏味。
But its tedious to write this for all signals. So, I was looking for a more elegant way, if it exists.
推荐答案
不知道这是不是你要的，但是：
strerror（）将错误代码转换为错误消息
类似strsignal（）将信号转换为信号消息。
Not sure if that is what you are loking for, but:strerror() converts a error code to the error message,similar strsignal() converts a signal to the signal message.
fprintf(stdout, "signal 9: %s\n", strsignal(9));
fprintf(stdout, "errno 60: %s\n", strerror(60));
Output:
signal 9: Killed
errno 60: Device not a stream
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