initctl: add show command to cat foo.conf, default finit.conf

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/serv.c

@@ -138,6 +138,11 @@ static char *conf(char *path, size_t len, char *name, int creat)
 {
 	char corr[40];
 
+	if (!name || !name[0]) {
+		strlcpy(path, FINIT_CONF, len);
+		return path;
+	}
+
 	if (!strstr(name, ".conf")) {
 		snprintf(corr, sizeof(corr), "%s.conf", name);
 		name = corr;
@@ -250,6 +255,20 @@ int serv_touch(char *arg)
 	return 0;
 }
 
+int serv_show(char *arg)
+{
+	char path[256];
+	char *fn;
+
+	fn = conf(path, sizeof(path), arg, creat);
+	if (!fexist(fn)) {
+		warnx("Cannot find %s", arg);
+		return 1;
+	}
+
+	return systemf("cat %s", fn);
+}
+
 /*
  * Try to open an editor for the given file, if creat is given we
  * create a new file based on /lib/finit/sample.conf