2 files changed, 270 insertions, 0 deletions
diff --git a/src/uvtd_vt.c b/src/uvtd_vt.c
new file mode 100644
index 0000000..78ba70e
--- /dev/null
+++ b/src/uvtd_vt.c
@@ -0,0 +1,216 @@
+/*
+ * uvtd - User-space VT daemon
+ *
+ * Copyright (c) 2012-2013 David Herrmann <dh.herrmann@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * Virtual Terminals
+ * Every virtual terminal forms a session inside of uvtd. Sessions are scheduled
+ * by the seat/session-scheduler and notified whenever they get active/inactive.
+ */
+
+#include <errno.h>
+#include <inttypes.h>
+#include <stdlib.h>
+#include <string.h>
+#include "shl_hook.h"
+#include "shl_log.h"
+#include "uvt.h"
+#include "uvtd_seat.h"
+#include "uvtd_vt.h"
+
+#define LOG_SUBSYSTEM "vt"
+
+struct uvtd_vt {
+	unsigned long ref;
+	struct uvt_ctx *uctx;
+	struct shl_hook *hook;
+	struct uvtd_session *session;
+	bool is_legacy;
+};
+
+static void vt_hup(struct uvtd_vt *vt)
+{
+	struct uvt_vt_event ev;
+
+	memset(&ev, 0, sizeof(ev));
+	ev.type = UVT_VT_HUP;
+
+	shl_hook_call(vt->hook, vt, &ev);
+}
+
+static int vt_session_event(struct uvtd_session *session, unsigned int event,
+			    void *data)
+{
+	struct uvtd_vt *vt = data;
+
+	switch (event) {
+	case UVTD_SESSION_UNREGISTER:
+		vt->session = NULL;
+		vt_hup(vt);
+		break;
+	case UVTD_SESSION_ACTIVATE:
+		log_debug("activate %p", vt);
+		break;
+	case UVTD_SESSION_DEACTIVATE:
+		log_debug("deactivate %p", vt);
+		break;
+	}
+
+	return 0;
+}
+
+int uvtd_vt_new(struct uvtd_vt **out, struct uvt_ctx *uctx, unsigned int id,
+		struct uvtd_seat *seat, bool is_legacy)
+{
+	struct uvtd_vt *vt;
+	int ret;
+
+	if (!out || !uctx)
+		return -EINVAL;
+
+	vt = malloc(sizeof(*vt));
+	if (!vt)
+		return -ENOMEM;
+
+	memset(vt, 0, sizeof(*vt));
+	vt->ref = 1;
+	vt->uctx = uctx;
+	vt->is_legacy = is_legacy;
+
+	ret = shl_hook_new(&vt->hook);
+	if (ret)
+		goto err_free;
+
+	ret = uvtd_seat_register_session(seat, &vt->session, id,
+					 vt_session_event, vt);
+	if (ret)
+		goto err_hook;
+
+	uvt_ctx_ref(vt->uctx);
+	*out = vt;
+	return 0;
+
+err_hook:
+	shl_hook_free(vt->hook);
+err_free:
+	free(vt);
+	return ret;
+}
+
+void uvtd_vt_ref(struct uvtd_vt *vt)
+{
+	if (!vt || !vt->ref)
+		return;
+
+	++vt->ref;
+}
+
+void uvtd_vt_unref(struct uvtd_vt *vt)
+{
+	if (!vt || !vt->ref || --vt->ref)
+		return;
+
+	uvtd_session_unregister(vt->session);
+	shl_hook_free(vt->hook);
+	uvt_ctx_unref(vt->uctx);
+	free(vt);
+}
+
+int uvtd_vt_register_cb(struct uvtd_vt *vt, uvt_vt_cb cb, void *data)
+{
+	if (!vt)
+		return -EINVAL;
+
+	return shl_hook_add_cast(vt->hook, cb, data, false);
+}
+
+void uvtd_vt_unregister_cb(struct uvtd_vt *vt, uvt_vt_cb cb, void *data)
+{
+	if (!vt)
+		return;
+
+	shl_hook_rm_cast(vt->hook, cb, data);
+}
+
+int uvtd_vt_read(struct uvtd_vt *vt, uint8_t *mem, size_t len)
+{
+	return -EAGAIN;
+}
+
+int uvtd_vt_write(struct uvtd_vt *vt, const uint8_t *mem, size_t len)
+{
+	return len;
+}
+
+unsigned int uvtd_vt_poll(struct uvtd_vt *vt)
+{
+	return UVT_TTY_WRITE;
+}
+
+/* compatibility to UVT-VT ops */
+
+static void vt_ref(void *vt)
+{
+	uvtd_vt_ref(vt);
+}
+
+static void vt_unref(void *vt)
+{
+	uvtd_vt_unref(vt);
+}
+
+static int vt_register_cb(void *vt, uvt_vt_cb cb, void *data)
+{
+	return uvtd_vt_register_cb(vt, cb, data);
+}
+
+static void vt_unregister_cb(void *vt, uvt_vt_cb cb, void *data)
+{
+	uvtd_vt_register_cb(vt, cb, data);
+}
+
+static int vt_read(void *vt, uint8_t *mem, size_t len)
+{
+	return uvtd_vt_read(vt, mem, len);
+}
+
+static int vt_write(void *vt, const uint8_t *mem, size_t len)
+{
+	return uvtd_vt_write(vt, mem, len);
+}
+
+static unsigned int vt_poll(void *vt)
+{
+	return uvtd_vt_poll(vt);
+}
+
+struct uvt_vt_ops uvtd_vt_ops = {
+	.ref = vt_ref,
+	.unref = vt_unref,
+	.register_cb = vt_register_cb,
+	.unregister_cb = vt_unregister_cb,
+	.read = vt_read,
+	.write = vt_write,
+	.poll = vt_poll,
+};
diff --git a/src/uvtd_vt.h b/src/uvtd_vt.h
new file mode 100644
index 0000000..fe83671
--- /dev/null
+++ b/src/uvtd_vt.h
@@ -0,0 +1,54 @@
+/*
+ * uvtd - User-space VT daemon
+ *
+ * Copyright (c) 2013 David Herrmann <dh.herrmann@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * Virtual Terminals
+ * Every virtual terminal forms a session inside of uvtd. Sessions are scheduled
+ * by the seat/session-scheduler and notified whenever they get active/inactive.
+ */
+
+#ifndef UVTD_VT_H
+#define UVTD_VT_H
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include "uvt.h"
+
+struct uvtd_vt;
+extern struct uvt_vt_ops uvtd_vt_ops;
+
+int uvtd_vt_new(struct uvtd_vt **out, struct uvt_ctx *uctx, unsigned int id,
+		struct uvtd_seat *seat, bool is_legacy);
+void uvtd_vt_ref(struct uvtd_vt *vt);
+void uvtd_vt_unref(struct uvtd_vt *vt);
+
+int uvtd_vt_register_cb(struct uvtd_vt *vt, uvt_vt_cb cb, void *data);
+void uvtd_vt_unregister_cb(struct uvtd_vt *vt, uvt_vt_cb cb, void *data);
+
+int uvtd_vt_read(struct uvtd_vt *vt, uint8_t *mem, size_t len);
+int uvtd_vt_write(struct uvtd_vt *vt, const uint8_t *mem, size_t len);
+unsigned int uvtd_vt_poll(struct uvtd_vt *vt);
+
+#endif /* UVTD_VT_H */