Rename wayland-compositor to weston

This rename addresses a few problems around the split between core
Wayland and the wayland-demos repository.

1) Initially, we had one big repository with protocol code, sample
compositor and sample clients.  We split that repository to make it
possible to implement the protocol without pulling in the sample/demo
code.  At this point, the compositor is more than just a "demo" and
wayland-demos doesn't send the right message.  The sample compositor
is a useful, self-contained project in it's own right, and we want to
move away from the "demos" label.

2) Another problem is that the wayland-demos compositor is often
called "the wayland compsitor", but it's really just one possible
compositor.  Existing X11 compositors are expected to add Wayland
support and then gradually phase out/modularize the X11 support, for
example.  Conversely, it's hard to talk about the wayland-demos
compositor specifically as opposed to, eg, the wayland protocol or a
wayland compositor in general.

We are also renaming the repo to weston, and the compositor
subdirectory to src/, to emphasize that the main "output" is the
compositor.

1 files changed, 176 insertions, 0 deletions

diff --git a/src/tty.c b/src/tty.c
new file mode 100644
index 0000000..9e55550
--- /dev/null
+++ b/src/tty.c
@@ -0,0 +1,176 @@
+/*
+ * Copyright © 2010 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission.  The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <termios.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <linux/kd.h>
+#include <linux/vt.h>
+#include <sys/ioctl.h>
+
+#include "compositor.h"
+
+struct tty {
+	struct weston_compositor *compositor;
+	int fd;
+	struct termios terminal_attributes;
+
+	struct wl_event_source *input_source;
+	struct wl_event_source *enter_vt_source;
+	struct wl_event_source *leave_vt_source;
+	tty_vt_func_t vt_func;
+};
+
+static int on_enter_vt(int signal_number, void *data)
+{
+	struct tty *tty = data;
+	int ret;
+
+	tty->vt_func(tty->compositor, TTY_ENTER_VT);
+
+	ioctl(tty->fd, VT_RELDISP, VT_ACKACQ);
+	ret = ioctl(tty->fd, KDSETMODE, KD_GRAPHICS);
+	if (ret)
+		fprintf(stderr, "failed to set KD_GRAPHICS mode on console: %m\n");
+
+	return 1;
+}
+
+static int
+on_leave_vt(int signal_number, void *data)
+{
+	struct tty *tty = data;
+	int ret;
+
+	ioctl (tty->fd, VT_RELDISP, 1);
+	ret = ioctl(tty->fd, KDSETMODE, KD_TEXT);
+	if (ret)
+		fprintf(stderr,
+			"failed to set KD_TEXT mode on console: %m\n");
+
+	tty->vt_func(tty->compositor, TTY_LEAVE_VT);
+
+	return 1;
+}
+
+static int
+on_tty_input(int fd, uint32_t mask, void *data)
+{
+	struct tty *tty = data;
+
+	/* Ignore input to tty.  We get keyboard events from evdev
+	 */
+	tcflush(tty->fd, TCIFLUSH);
+
+	return 1;
+}
+
+struct tty *
+tty_create(struct weston_compositor *compositor, tty_vt_func_t vt_func,
+           int tty_nr)
+{
+	struct termios raw_attributes;
+	struct vt_mode mode = { 0 };
+	int ret;
+	struct tty *tty;
+	struct wl_event_loop *loop;
+	char filename[16];
+
+	tty = malloc(sizeof *tty);
+	if (tty == NULL)
+		return NULL;
+
+	snprintf(filename, sizeof filename, "/dev/tty%d", tty_nr);
+	fprintf(stderr, "compositor: using %s\n", filename);
+
+	memset(tty, 0, sizeof *tty);
+	tty->compositor = compositor;
+	tty->vt_func = vt_func;
+	tty->fd = open(filename, O_RDWR | O_NOCTTY);
+	if (tty->fd <= 0) {
+		fprintf(stderr, "failed to open active tty: %m\n");
+		return NULL;
+	}
+
+	if (tcgetattr(tty->fd, &tty->terminal_attributes) < 0) {
+		fprintf(stderr, "could not get terminal attributes: %m\n");
+		return NULL;
+	}
+
+	/* Ignore control characters and disable echo */
+	raw_attributes = tty->terminal_attributes;
+	cfmakeraw(&raw_attributes);
+
+	/* Fix up line endings to be normal (cfmakeraw hoses them) */
+	raw_attributes.c_oflag |= OPOST | OCRNL;
+
+	if (tcsetattr(tty->fd, TCSANOW, &raw_attributes) < 0)
+		fprintf(stderr, "could not put terminal into raw mode: %m\n");
+
+	loop = wl_display_get_event_loop(compositor->wl_display);
+	tty->input_source =
+		wl_event_loop_add_fd(loop, tty->fd,
+				     WL_EVENT_READABLE, on_tty_input, tty);
+
+	ret = ioctl(tty->fd, KDSETMODE, KD_GRAPHICS);
+	if (ret) {
+		fprintf(stderr, "failed to set KD_GRAPHICS mode on tty: %m\n");
+		return NULL;
+	}
+
+	tty->compositor->focus = 1;
+	mode.mode = VT_PROCESS;
+	mode.relsig = SIGUSR1;
+	mode.acqsig = SIGUSR2;
+	if (ioctl(tty->fd, VT_SETMODE, &mode) < 0) {
+		fprintf(stderr, "failed to take control of vt handling\n");
+		return NULL;
+	}
+
+	tty->leave_vt_source =
+		wl_event_loop_add_signal(loop, SIGUSR1, on_leave_vt, tty);
+	tty->enter_vt_source =
+		wl_event_loop_add_signal(loop, SIGUSR2, on_enter_vt, tty);
+
+	return tty;
+}
+
+void
+tty_destroy(struct tty *tty)
+{
+        if(!tty)
+                return;
+
+	if (ioctl(tty->fd, KDSETMODE, KD_TEXT))
+		fprintf(stderr,
+			"failed to set KD_TEXT mode on tty: %m\n");
+
+	if (tcsetattr(tty->fd, TCSANOW, &tty->terminal_attributes) < 0)
+		fprintf(stderr,
+			"could not restore terminal to canonical mode\n");
+
+	free(tty);
+}