+/*
+ * A newly allocated VT uses the font from the active VT. Here
+ * we update all possibly already allocated VTs with the configured
+ * font. It also allows to restart systemd-vconsole-setup.service,
+ * to apply a new font to all VTs.
+ */
+static void font_copy_to_all_vcs(int fd) {
+ struct vt_stat vcs = {};
+ int i, r;
+
+ /* get active, and 16 bit mask of used VT numbers */
+ r = ioctl(fd, VT_GETSTATE, &vcs);
+ if (r < 0)
+ return;
+
+ for (i = 1; i <= 15; i++) {
+ char vcname[16];
+ _cleanup_close_ int vcfd = -1;
+ struct console_font_op cfo = {};
+
+ if (i == vcs.v_active)
+ continue;
+
+ /* skip non-allocated ttys */
+ snprintf(vcname, sizeof(vcname), "/dev/vcs%i", i);
+ if (access(vcname, F_OK) < 0)
+ continue;
+
+ snprintf(vcname, sizeof(vcname), "/dev/tty%i", i);
+ vcfd = open_terminal(vcname, O_RDWR|O_CLOEXEC);
+ if (vcfd < 0)
+ continue;
+
+ /* copy font from active VT, where the font was uploaded to */
+ cfo.op = KD_FONT_OP_COPY;
+ cfo.height = vcs.v_active-1; /* tty1 == index 0 */
+ ioctl(vcfd, KDFONTOP, &cfo);
+ }
+}
+