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, 111 deletions

diff --git a/linux/crypto/chacha20_generic.c b/linux/crypto/chacha20_generic.c
deleted file mode 100644
index 914189e7..00000000
--- a/linux/crypto/chacha20_generic.c
+++ /dev/null
@@ -1,111 +0,0 @@
-/*
- * ChaCha20 256-bit cipher algorithm, RFC7539
- *
- * Copyright (C) 2015 Martin Willi
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/byteorder.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/scatterlist.h>
-#include <asm/unaligned.h>
-
-#include <linux/crypto.h>
-#include <crypto/algapi.h>
-#include <crypto/chacha.h>
-#include <crypto/skcipher.h>
-
-#include <sodium/crypto_stream_chacha20.h>
-
-static struct skcipher_alg alg;
-
-struct chacha20_tfm {
-	struct crypto_skcipher	tfm;
-	u32			key[8];
-};
-
-static int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key,
-				  unsigned int keysize)
-{
-	struct chacha20_tfm *ctx =
-		container_of(tfm, struct chacha20_tfm, tfm);
-	int i;
-
-	if (keysize != CHACHA_KEY_SIZE)
-		return -EINVAL;
-
-	for (i = 0; i < ARRAY_SIZE(ctx->key); i++)
-		ctx->key[i] = get_unaligned_le32(key + i * sizeof(u32));
-
-	return 0;
-}
-
-static int crypto_chacha20_crypt(struct skcipher_request *req)
-{
-	struct chacha20_tfm *ctx =
-		container_of(req->tfm, struct chacha20_tfm, tfm.base);
-	struct scatterlist *sg = req->src;
-	unsigned nbytes = req->cryptlen;
-	u32 iv[4];
-	int ret;
-
-	BUG_ON(req->src != req->dst);
-
-	memcpy(iv, req->iv, sizeof(iv));
-
-	while (1) {
-		ret = crypto_stream_chacha20_xor_ic(sg_virt(sg),
-						    sg_virt(sg),
-						    sg->length,
-						    (void *) &iv[2],
-						    iv[0] | ((u64) iv[1] << 32),
-						    (void *) ctx->key);
-		BUG_ON(ret);
-
-		nbytes -= sg->length;
-
-		if (sg_is_last(sg))
-			break;
-
-		BUG_ON(sg->length % CHACHA_BLOCK_SIZE);
-		iv[0] += sg->length / CHACHA_BLOCK_SIZE;
-		sg = sg_next(sg);
-	};
-
-	BUG_ON(nbytes);
-
-	return 0;
-}
-
-static void *crypto_chacha20_alloc_tfm(void)
-{
-	struct chacha20_tfm *tfm = kzalloc(sizeof(*tfm), GFP_KERNEL);
-
-	if (!tfm)
-		return NULL;
-
-	tfm->tfm.base.alg	= &alg.base;
-	tfm->tfm.setkey		= crypto_chacha20_setkey;
-	tfm->tfm.encrypt	= crypto_chacha20_crypt;
-	tfm->tfm.decrypt	= crypto_chacha20_crypt;
-	tfm->tfm.ivsize		= CHACHA_IV_SIZE;
-	tfm->tfm.keysize	= CHACHA_KEY_SIZE;
-
-	return tfm;
-}
-
-static struct skcipher_alg alg = {
-	.base.cra_name		= "chacha20",
-	.base.alloc_tfm		= crypto_chacha20_alloc_tfm,
-};
-
-__attribute__((constructor(110)))
-static int chacha20_generic_mod_init(void)
-{
-	return crypto_register_skcipher(&alg);
-}