From b5fd066153c40a70a29caa1ea7987723ab687763 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Tue, 16 Jan 2024 17:00:02 -0500 Subject: Move c_src dirs back to toplevel We just wanted c sourcefiles out of the top level, not c source directories. Signed-off-by: Kent Overstreet --- c_src/libbcachefs/checksum.h | 236 ------------------------------------------- 1 file changed, 236 deletions(-) delete mode 100644 c_src/libbcachefs/checksum.h (limited to 'c_src/libbcachefs/checksum.h') diff --git a/c_src/libbcachefs/checksum.h b/c_src/libbcachefs/checksum.h deleted file mode 100644 index 1b8c2c10..00000000 --- a/c_src/libbcachefs/checksum.h +++ /dev/null @@ -1,236 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _BCACHEFS_CHECKSUM_H -#define _BCACHEFS_CHECKSUM_H - -#include "bcachefs.h" -#include "extents_types.h" -#include "super-io.h" - -#include -#include - -static inline bool bch2_checksum_mergeable(unsigned type) -{ - - switch (type) { - case BCH_CSUM_none: - case BCH_CSUM_crc32c: - case BCH_CSUM_crc64: - return true; - default: - return false; - } -} - -struct bch_csum bch2_checksum_merge(unsigned, struct bch_csum, - struct bch_csum, size_t); - -#define BCH_NONCE_EXTENT cpu_to_le32(1 << 28) -#define BCH_NONCE_BTREE cpu_to_le32(2 << 28) -#define BCH_NONCE_JOURNAL cpu_to_le32(3 << 28) -#define BCH_NONCE_PRIO cpu_to_le32(4 << 28) -#define BCH_NONCE_POLY cpu_to_le32(1 << 31) - -struct bch_csum bch2_checksum(struct bch_fs *, unsigned, struct nonce, - const void *, size_t); - -/* - * This is used for various on disk data structures - bch_sb, prio_set, bset, - * jset: The checksum is _always_ the first field of these structs - */ -#define csum_vstruct(_c, _type, _nonce, _i) \ -({ \ - const void *_start = ((const void *) (_i)) + sizeof((_i)->csum);\ - \ - bch2_checksum(_c, _type, _nonce, _start, vstruct_end(_i) - _start);\ -}) - -static inline void bch2_csum_to_text(struct printbuf *out, - enum bch_csum_type type, - struct bch_csum csum) -{ - const u8 *p = (u8 *) &csum; - unsigned bytes = type < BCH_CSUM_NR ? bch_crc_bytes[type] : 16; - - for (unsigned i = 0; i < bytes; i++) - prt_hex_byte(out, p[i]); -} - -static inline void bch2_csum_err_msg(struct printbuf *out, - enum bch_csum_type type, - struct bch_csum expected, - struct bch_csum got) -{ - prt_printf(out, "checksum error: got "); - bch2_csum_to_text(out, type, got); - prt_str(out, " should be "); - bch2_csum_to_text(out, type, expected); - prt_printf(out, " type %s", bch2_csum_types[type]); -} - -int bch2_chacha_encrypt_key(struct bch_key *, struct nonce, void *, size_t); -int bch2_request_key(struct bch_sb *, struct bch_key *); -#ifndef __KERNEL__ -int bch2_revoke_key(struct bch_sb *); -#endif - -int bch2_encrypt(struct bch_fs *, unsigned, struct nonce, - void *data, size_t); - -struct bch_csum bch2_checksum_bio(struct bch_fs *, unsigned, - struct nonce, struct bio *); - -int bch2_rechecksum_bio(struct bch_fs *, struct bio *, struct bversion, - struct bch_extent_crc_unpacked, - struct bch_extent_crc_unpacked *, - struct bch_extent_crc_unpacked *, - unsigned, unsigned, unsigned); - -int __bch2_encrypt_bio(struct bch_fs *, unsigned, - struct nonce, struct bio *); - -static inline int bch2_encrypt_bio(struct bch_fs *c, unsigned type, - struct nonce nonce, struct bio *bio) -{ - return bch2_csum_type_is_encryption(type) - ? __bch2_encrypt_bio(c, type, nonce, bio) - : 0; -} - -extern const struct bch_sb_field_ops bch_sb_field_ops_crypt; - -int bch2_decrypt_sb_key(struct bch_fs *, struct bch_sb_field_crypt *, - struct bch_key *); - -int bch2_disable_encryption(struct bch_fs *); -int bch2_enable_encryption(struct bch_fs *, bool); - -void bch2_fs_encryption_exit(struct bch_fs *); -int bch2_fs_encryption_init(struct bch_fs *); - -static inline enum bch_csum_type bch2_csum_opt_to_type(enum bch_csum_opts type, - bool data) -{ - switch (type) { - case BCH_CSUM_OPT_none: - return BCH_CSUM_none; - case BCH_CSUM_OPT_crc32c: - return data ? BCH_CSUM_crc32c : BCH_CSUM_crc32c_nonzero; - case BCH_CSUM_OPT_crc64: - return data ? BCH_CSUM_crc64 : BCH_CSUM_crc64_nonzero; - case BCH_CSUM_OPT_xxhash: - return BCH_CSUM_xxhash; - default: - BUG(); - } -} - -static inline enum bch_csum_type bch2_data_checksum_type(struct bch_fs *c, - struct bch_io_opts opts) -{ - if (opts.nocow) - return 0; - - if (c->sb.encryption_type) - return c->opts.wide_macs - ? BCH_CSUM_chacha20_poly1305_128 - : BCH_CSUM_chacha20_poly1305_80; - - return bch2_csum_opt_to_type(opts.data_checksum, true); -} - -static inline enum bch_csum_type bch2_meta_checksum_type(struct bch_fs *c) -{ - if (c->sb.encryption_type) - return BCH_CSUM_chacha20_poly1305_128; - - return bch2_csum_opt_to_type(c->opts.metadata_checksum, false); -} - -static inline bool bch2_checksum_type_valid(const struct bch_fs *c, - unsigned type) -{ - if (type >= BCH_CSUM_NR) - return false; - - if (bch2_csum_type_is_encryption(type) && !c->chacha20) - return false; - - return true; -} - -/* returns true if not equal */ -static inline bool bch2_crc_cmp(struct bch_csum l, struct bch_csum r) -{ - /* - * XXX: need some way of preventing the compiler from optimizing this - * into a form that isn't constant time.. - */ - return ((l.lo ^ r.lo) | (l.hi ^ r.hi)) != 0; -} - -/* for skipping ahead and encrypting/decrypting at an offset: */ -static inline struct nonce nonce_add(struct nonce nonce, unsigned offset) -{ - EBUG_ON(offset & (CHACHA_BLOCK_SIZE - 1)); - - le32_add_cpu(&nonce.d[0], offset / CHACHA_BLOCK_SIZE); - return nonce; -} - -static inline struct nonce null_nonce(void) -{ - struct nonce ret; - - memset(&ret, 0, sizeof(ret)); - return ret; -} - -static inline struct nonce extent_nonce(struct bversion version, - struct bch_extent_crc_unpacked crc) -{ - unsigned compression_type = crc_is_compressed(crc) - ? crc.compression_type - : 0; - unsigned size = compression_type ? crc.uncompressed_size : 0; - struct nonce nonce = (struct nonce) {{ - [0] = cpu_to_le32(size << 22), - [1] = cpu_to_le32(version.lo), - [2] = cpu_to_le32(version.lo >> 32), - [3] = cpu_to_le32(version.hi| - (compression_type << 24))^BCH_NONCE_EXTENT, - }}; - - return nonce_add(nonce, crc.nonce << 9); -} - -static inline bool bch2_key_is_encrypted(struct bch_encrypted_key *key) -{ - return le64_to_cpu(key->magic) != BCH_KEY_MAGIC; -} - -static inline struct nonce __bch2_sb_key_nonce(struct bch_sb *sb) -{ - __le64 magic = __bch2_sb_magic(sb); - - return (struct nonce) {{ - [0] = 0, - [1] = 0, - [2] = ((__le32 *) &magic)[0], - [3] = ((__le32 *) &magic)[1], - }}; -} - -static inline struct nonce bch2_sb_key_nonce(struct bch_fs *c) -{ - __le64 magic = bch2_sb_magic(c); - - return (struct nonce) {{ - [0] = 0, - [1] = 0, - [2] = ((__le32 *) &magic)[0], - [3] = ((__le32 *) &magic)[1], - }}; -} - -#endif /* _BCACHEFS_CHECKSUM_H */ -- cgit v1.2.3