Add posix headers to toynet.h, move xioctl() to lib.c, introduce lib/net.c and move xsocket() to it.
diff --git a/lib/lib.c b/lib/lib.c
index 87ff12c..4d8e23a 100644
--- a/lib/lib.c
+++ b/lib/lib.c
@@ -739,6 +739,28 @@
*/
+
+// Sleep for this many thousandths of a second
+void msleep(long miliseconds)
+{
+ struct timespec ts;
+
+ ts.tv_sec = miliseconds/1000;
+ ts.tv_nsec = (miliseconds%1000)*1000000;
+ nanosleep(&ts, &ts);
+}
+
+int xioctl(int fd, int request, void *data)
+{
+ int rc;
+
+ errno = 0;
+ rc = ioctl(fd, request, data);
+ if (rc == -1 && errno) perror_exit("ioctl %d", request);
+
+ return rc;
+}
+
// Open a /var/run/NAME.pid file, dying if we can't write it or if it currently
// exists and is this executable.
void xpidfile(char *name)