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, 0 insertions, 299 deletions

diff --git a/libbcachefs/thread_with_file.c b/libbcachefs/thread_with_file.c
deleted file mode 100644
index b1c867aa..00000000
--- a/libbcachefs/thread_with_file.c
+++ /dev/null
@@ -1,299 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#ifndef NO_BCACHEFS_FS
-
-#include "bcachefs.h"
-#include "printbuf.h"
-#include "thread_with_file.h"
-
-#include <linux/anon_inodes.h>
-#include <linux/file.h>
-#include <linux/kthread.h>
-#include <linux/pagemap.h>
-#include <linux/poll.h>
-
-void bch2_thread_with_file_exit(struct thread_with_file *thr)
-{
-	if (thr->task) {
-		kthread_stop(thr->task);
-		put_task_struct(thr->task);
-	}
-}
-
-int bch2_run_thread_with_file(struct thread_with_file *thr,
-			      const struct file_operations *fops,
-			      int (*fn)(void *))
-{
-	struct file *file = NULL;
-	int ret, fd = -1;
-	unsigned fd_flags = O_CLOEXEC;
-
-	if (fops->read && fops->write)
-		fd_flags |= O_RDWR;
-	else if (fops->read)
-		fd_flags |= O_RDONLY;
-	else if (fops->write)
-		fd_flags |= O_WRONLY;
-
-	char name[TASK_COMM_LEN];
-	get_task_comm(name, current);
-
-	thr->ret = 0;
-	thr->task = kthread_create(fn, thr, "%s", name);
-	ret = PTR_ERR_OR_ZERO(thr->task);
-	if (ret)
-		return ret;
-
-	ret = get_unused_fd_flags(fd_flags);
-	if (ret < 0)
-		goto err;
-	fd = ret;
-
-	file = anon_inode_getfile(name, fops, thr, fd_flags);
-	ret = PTR_ERR_OR_ZERO(file);
-	if (ret)
-		goto err;
-
-	fd_install(fd, file);
-	get_task_struct(thr->task);
-	wake_up_process(thr->task);
-	return fd;
-err:
-	if (fd >= 0)
-		put_unused_fd(fd);
-	if (thr->task)
-		kthread_stop(thr->task);
-	return ret;
-}
-
-static inline bool thread_with_stdio_has_output(struct thread_with_stdio *thr)
-{
-	return thr->stdio.output_buf.pos ||
-		thr->output2.nr ||
-		thr->thr.done;
-}
-
-static ssize_t thread_with_stdio_read(struct file *file, char __user *buf,
-				      size_t len, loff_t *ppos)
-{
-	struct thread_with_stdio *thr =
-		container_of(file->private_data, struct thread_with_stdio, thr);
-	size_t copied = 0, b;
-	int ret = 0;
-
-	if ((file->f_flags & O_NONBLOCK) &&
-	    !thread_with_stdio_has_output(thr))
-		return -EAGAIN;
-
-	ret = wait_event_interruptible(thr->stdio.output_wait,
-		thread_with_stdio_has_output(thr));
-	if (ret)
-		return ret;
-
-	if (thr->thr.done)
-		return 0;
-
-	while (len) {
-		ret = darray_make_room(&thr->output2, thr->stdio.output_buf.pos);
-		if (ret)
-			break;
-
-		spin_lock_irq(&thr->stdio.output_lock);
-		b = min_t(size_t, darray_room(thr->output2), thr->stdio.output_buf.pos);
-
-		memcpy(&darray_top(thr->output2), thr->stdio.output_buf.buf, b);
-		memmove(thr->stdio.output_buf.buf,
-			thr->stdio.output_buf.buf + b,
-			thr->stdio.output_buf.pos - b);
-
-		thr->output2.nr += b;
-		thr->stdio.output_buf.pos -= b;
-		spin_unlock_irq(&thr->stdio.output_lock);
-
-		b = min(len, thr->output2.nr);
-		if (!b)
-			break;
-
-		b -= copy_to_user(buf, thr->output2.data, b);
-		if (!b) {
-			ret = -EFAULT;
-			break;
-		}
-
-		copied	+= b;
-		buf	+= b;
-		len	-= b;
-
-		memmove(thr->output2.data,
-			thr->output2.data + b,
-			thr->output2.nr - b);
-		thr->output2.nr -= b;
-	}
-
-	return copied ?: ret;
-}
-
-static int thread_with_stdio_release(struct inode *inode, struct file *file)
-{
-	struct thread_with_stdio *thr =
-		container_of(file->private_data, struct thread_with_stdio, thr);
-
-	bch2_thread_with_file_exit(&thr->thr);
-	printbuf_exit(&thr->stdio.input_buf);
-	printbuf_exit(&thr->stdio.output_buf);
-	darray_exit(&thr->output2);
-	thr->exit(thr);
-	return 0;
-}
-
-#define WRITE_BUFFER		4096
-
-static inline bool thread_with_stdio_has_input_space(struct thread_with_stdio *thr)
-{
-	return thr->stdio.input_buf.pos < WRITE_BUFFER || thr->thr.done;
-}
-
-static ssize_t thread_with_stdio_write(struct file *file, const char __user *ubuf,
-				       size_t len, loff_t *ppos)
-{
-	struct thread_with_stdio *thr =
-		container_of(file->private_data, struct thread_with_stdio, thr);
-	struct printbuf *buf = &thr->stdio.input_buf;
-	size_t copied = 0;
-	ssize_t ret = 0;
-
-	while (len) {
-		if (thr->thr.done) {
-			ret = -EPIPE;
-			break;
-		}
-
-		size_t b = len - fault_in_readable(ubuf, len);
-		if (!b) {
-			ret = -EFAULT;
-			break;
-		}
-
-		spin_lock(&thr->stdio.input_lock);
-		if (buf->pos < WRITE_BUFFER)
-			bch2_printbuf_make_room(buf, min(b, WRITE_BUFFER - buf->pos));
-		b = min(len, printbuf_remaining_size(buf));
-
-		if (b && !copy_from_user_nofault(&buf->buf[buf->pos], ubuf, b)) {
-			ubuf += b;
-			len -= b;
-			copied += b;
-			buf->pos += b;
-		}
-		spin_unlock(&thr->stdio.input_lock);
-
-		if (b) {
-			wake_up(&thr->stdio.input_wait);
-		} else {
-			if ((file->f_flags & O_NONBLOCK)) {
-				ret = -EAGAIN;
-				break;
-			}
-
-			ret = wait_event_interruptible(thr->stdio.input_wait,
-					thread_with_stdio_has_input_space(thr));
-			if (ret)
-				break;
-		}
-	}
-
-	return copied ?: ret;
-}
-
-static __poll_t thread_with_stdio_poll(struct file *file, struct poll_table_struct *wait)
-{
-	struct thread_with_stdio *thr =
-		container_of(file->private_data, struct thread_with_stdio, thr);
-
-	poll_wait(file, &thr->stdio.output_wait, wait);
-	poll_wait(file, &thr->stdio.input_wait, wait);
-
-	__poll_t mask = 0;
-
-	if (thread_with_stdio_has_output(thr))
-		mask |= EPOLLIN;
-	if (thread_with_stdio_has_input_space(thr))
-		mask |= EPOLLOUT;
-	if (thr->thr.done)
-		mask |= EPOLLHUP|EPOLLERR;
-	return mask;
-}
-
-static const struct file_operations thread_with_stdio_fops = {
-	.release	= thread_with_stdio_release,
-	.read		= thread_with_stdio_read,
-	.write		= thread_with_stdio_write,
-	.poll		= thread_with_stdio_poll,
-	.llseek		= no_llseek,
-};
-
-int bch2_run_thread_with_stdio(struct thread_with_stdio *thr,
-			       void (*exit)(struct thread_with_stdio *),
-			       int (*fn)(void *))
-{
-	thr->stdio.input_buf = PRINTBUF;
-	thr->stdio.input_buf.atomic++;
-	spin_lock_init(&thr->stdio.input_lock);
-	init_waitqueue_head(&thr->stdio.input_wait);
-
-	thr->stdio.output_buf = PRINTBUF;
-	thr->stdio.output_buf.atomic++;
-	spin_lock_init(&thr->stdio.output_lock);
-	init_waitqueue_head(&thr->stdio.output_wait);
-
-	darray_init(&thr->output2);
-	thr->exit = exit;
-
-	return bch2_run_thread_with_file(&thr->thr, &thread_with_stdio_fops, fn);
-}
-
-int bch2_stdio_redirect_read(struct stdio_redirect *stdio, char *buf, size_t len)
-{
-	wait_event(stdio->input_wait,
-		   stdio->input_buf.pos || stdio->done);
-
-	if (stdio->done)
-		return -1;
-
-	spin_lock(&stdio->input_lock);
-	int ret = min(len, stdio->input_buf.pos);
-	stdio->input_buf.pos -= ret;
-	memcpy(buf, stdio->input_buf.buf, ret);
-	memmove(stdio->input_buf.buf,
-		stdio->input_buf.buf + ret,
-		stdio->input_buf.pos);
-	spin_unlock(&stdio->input_lock);
-
-	wake_up(&stdio->input_wait);
-	return ret;
-}
-
-int bch2_stdio_redirect_readline(struct stdio_redirect *stdio, char *buf, size_t len)
-{
-	wait_event(stdio->input_wait,
-		   stdio->input_buf.pos || stdio->done);
-
-	if (stdio->done)
-		return -1;
-
-	spin_lock(&stdio->input_lock);
-	int ret = min(len, stdio->input_buf.pos);
-	char *n = memchr(stdio->input_buf.buf, '\n', ret);
-	if (n)
-		ret = min(ret, n + 1 - stdio->input_buf.buf);
-	stdio->input_buf.pos -= ret;
-	memcpy(buf, stdio->input_buf.buf, ret);
-	memmove(stdio->input_buf.buf,
-		stdio->input_buf.buf + ret,
-		stdio->input_buf.pos);
-	spin_unlock(&stdio->input_lock);
-
-	wake_up(&stdio->input_wait);
-	return ret;
-}
-
-#endif /* NO_BCACHEFS_FS */