move Rust sources to top level, C sources into c_src

This moves the Rust sources out of rust_src/ and into the top level.
Running the bcachefs executable out of the development tree is now:

$ ./target/release/bcachefs command
or
$ cargo run --profile release -- command

instead of "./bcachefs command".

Building and installing is still:

$ make && make install

Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 46 insertions, 0 deletions

diff --git a/c_src/include/linux/timer.h b/c_src/include/linux/timer.h
new file mode 100644
index 00000000..9667acf9
--- /dev/null
+++ b/c_src/include/linux/timer.h
@@ -0,0 +1,46 @@
+#ifndef __TOOLS_LINUX_TIMER_H
+#define __TOOLS_LINUX_TIMER_H
+
+#include <string.h>
+#include <linux/types.h>
+
+struct timer_list {
+	unsigned long		expires;
+	void			(*function)(struct timer_list *timer);
+	bool			pending;
+};
+
+static inline void timer_setup(struct timer_list *timer,
+			       void (*func)(struct timer_list *),
+			       unsigned int flags)
+{
+	memset(timer, 0, sizeof(*timer));
+	timer->function = func;
+}
+
+#define timer_setup_on_stack(timer, callback, flags)			\
+	timer_setup(timer, callback, flags)
+
+#define destroy_timer_on_stack(timer) do {} while (0)
+
+static inline int timer_pending(const struct timer_list *timer)
+{
+	return timer->pending;
+}
+
+int del_timer(struct timer_list * timer);
+int del_timer_sync(struct timer_list *timer);
+
+#define del_singleshot_timer_sync(timer) del_timer_sync(timer)
+
+int mod_timer(struct timer_list *timer, unsigned long expires);
+
+static inline void add_timer(struct timer_list *timer)
+{
+	BUG_ON(timer_pending(timer));
+	mod_timer(timer, timer->expires);
+}
+
+void flush_timers(void);
+
+#endif /* __TOOLS_LINUX_TIMER_H */