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, 65 insertions, 0 deletions

diff --git a/c_src/include/linux/spinlock.h b/c_src/include/linux/spinlock.h
new file mode 100644
index 00000000..6c4a623c
--- /dev/null
+++ b/c_src/include/linux/spinlock.h
@@ -0,0 +1,65 @@
+#ifndef __TOOLS_LINUX_SPINLOCK_H
+#define __TOOLS_LINUX_SPINLOCK_H
+
+#include <linux/atomic.h>
+#include <pthread.h>
+
+typedef struct {
+	pthread_mutex_t lock;
+} raw_spinlock_t;
+
+#define __RAW_SPIN_LOCK_UNLOCKED(name)	(raw_spinlock_t) { .lock = PTHREAD_MUTEX_INITIALIZER  }
+
+static inline void raw_spin_lock_init(raw_spinlock_t *lock)
+{
+	pthread_mutex_init(&lock->lock, NULL);
+}
+
+static inline bool raw_spin_trylock(raw_spinlock_t *lock)
+{
+	return !pthread_mutex_trylock(&lock->lock);
+}
+
+static inline void raw_spin_lock(raw_spinlock_t *lock)
+{
+	pthread_mutex_lock(&lock->lock);
+}
+
+static inline void raw_spin_unlock(raw_spinlock_t *lock)
+{
+	pthread_mutex_unlock(&lock->lock);
+}
+
+#define raw_spin_lock_irq(lock)		raw_spin_lock(lock)
+#define raw_spin_unlock_irq(lock)	raw_spin_unlock(lock)
+
+#define raw_spin_lock_irqsave(lock, flags)		\
+do {							\
+	flags = 0;					\
+	raw_spin_lock(lock);				\
+} while (0)
+
+#define raw_spin_unlock_irqrestore(lock, flags) raw_spin_unlock(lock)
+
+typedef raw_spinlock_t spinlock_t;
+
+#define __SPIN_LOCK_UNLOCKED(name)	__RAW_SPIN_LOCK_UNLOCKED(name)
+
+#define DEFINE_SPINLOCK(x)	spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
+
+#define spin_lock_init(lock)		raw_spin_lock_init(lock)
+#define spin_lock(lock)			raw_spin_lock(lock)
+#define spin_unlock(lock)		raw_spin_unlock(lock)
+
+#define spin_lock_nested(lock, n)	spin_lock(lock)
+
+#define spin_lock_bh(lock)		raw_spin_lock(lock)
+#define spin_unlock_bh(lock)		raw_spin_unlock(lock)
+
+#define spin_lock_irq(lock)		raw_spin_lock(lock)
+#define spin_unlock_irq(lock)		raw_spin_unlock(lock)
+
+#define spin_lock_irqsave(lock, flags)	raw_spin_lock_irqsave(lock, flags)
+#define spin_unlock_irqrestore(lock, flags) raw_spin_unlock_irqrestore(lock, flags)
+
+#endif /* __TOOLS_LINUX_SPINLOCK_H */