1 files changed, 74 insertions, 0 deletions
diff --git a/toys/posix/kill.c b/toys/posix/kill.c
new file mode 100644
index 00000000..e64a146b
--- /dev/null
+++ b/toys/posix/kill.c
@@ -0,0 +1,74 @@
+/* vi: set sw=4 ts=4:
+ *
+ * kill.c - a program to send signals to processes
+ *
+ * Copyright 2012 Daniel Walter <d.walter@0x90.at>
+ *
+ * See http://opengroup.org/onlinepubs/9699919799/utilities/kill.html
+
+USE_KILL(NEWTOY(kill, "?s: l", TOYFLAG_BIN))
+
+config KILL
+	bool "kill"
+	default y
+	help
+	  usage: kill [-l [SIGNAL] | -s SIGNAL | -SIGNAL] pid...
+
+	  Send a signal to a process
+
+*/
+
+#include "toys.h"
+
+DEFINE_GLOBALS(
+	char *signame;
+)
+
+#define TT this.kill
+
+void kill_main(void)
+{
+	int signum;
+	char *tmp, **args = toys.optargs;
+	pid_t pid;
+
+	// list signal(s)
+	if (toys.optflags & 1) {
+		if (*args) {
+			int signum = sig_to_num(*args);
+			char *s = NULL;
+
+			if (signum>=0) s = num_to_sig(signum&127);
+			puts(s ? s : "UNKNOWN");
+		} else sig_to_num(NULL);
+		return;
+	}
+
+	// signal must come before pids, so "kill -9 -1" isn't confusing.
+
+	if (!TT.signame && *args && **args=='-') TT.signame=*(args++)+1;
+	if (TT.signame) {
+		char *arg;
+		int i = strtol(TT.signame, &arg, 10);
+		if (!*arg) arg = num_to_sig(i);
+		else arg = TT.signame;
+
+		if (!arg || -1 == (signum = sig_to_num(arg)))
+			error_exit("Unknown signal '%s'", arg);
+	} else signum = SIGTERM;
+
+	if (!*args) {
+		toys.exithelp++;
+		error_exit("missing argument");
+	}
+
+	while (*args) {
+		char *arg = *(args++);
+
+		pid = strtol(arg, &tmp, 10);
+		if (*tmp || kill(pid, signum) < 0) {
+			error_msg("unknown pid '%s'", arg);
+			toys.exitval = EXIT_FAILURE;
+		}
+	}
+}