fdev: Introduce fdev for file event handling

This is an effort to keep cutting dependency to systemd.

Change-Id: I9a0c032a1095e297c7f3ac5b67827fda3658b8d9
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

1 files changed, 48 insertions, 0 deletions

diff --git a/src/fdev.h b/src/fdev.h
new file mode 100644
index 00000000..9fbcb759
--- /dev/null
+++ b/src/fdev.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2018 "IoT.bzh"
+ * Author José Bollo <jose.bollo@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <sys/epoll.h>
+
+struct fdev;
+
+#if defined(FDEV_PROVIDER)
+struct fdev_itf
+{
+	void (*unref)(void *closure);
+	void (*disable)(void *closure, const struct fdev *fdev);
+	void (*enable)(void *closure, const struct fdev *fdev);
+};
+
+extern struct fdev *fdev_create(int fd);
+extern void fdev_set_itf(struct fdev *fdev, struct fdev_itf *itf, void *closure_itf);
+extern void fdev_dispatch(struct fdev *fdev, uint32_t events);
+#endif
+
+extern struct fdev *fdev_addref(struct fdev *fdev);
+extern void fdev_unref(struct fdev *fdev);
+
+extern int fdev_fd(const struct fdev *fdev);
+extern uint32_t fdev_events(const struct fdev *fdev);
+extern int fdev_repeat(const struct fdev *fdev);
+extern int fdev_autoclose(const struct fdev *fdev);
+
+extern void fdev_set_callback(struct fdev *fdev, void (*callback)(void*,uint32_t,struct fdev*), void *closure);
+extern void fdev_set_events(struct fdev *fdev, uint32_t events);
+extern void fdev_set_repeat(struct fdev *fdev, int count);
+extern void fdev_set_autoclose(struct fdev *fdev, int autoclose);