84 lines
3.7 KiB
C
84 lines
3.7 KiB
C
/*
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Copyright (c) 2014 Anton Titov.
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Copyright (c) 2014 pCloud Ltd. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met: Redistributions of source code must retain the above
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copyright notice, this list of conditions and the following
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disclaimer. Redistributions in binary form must reproduce the
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above copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials provided
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with the distribution. Neither the name of pCloud Ltd nor the
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names of its contributors may be used to endorse or promote
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products derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL pCloud
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Ltd BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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DAMAGE.
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*/
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#ifndef _PSYNC_FSCRYPTO_H
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#define _PSYNC_FSCRYPTO_H
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#include "pcloudcrypto.h"
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#include "pfs.h"
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#define PSYNC_CRYPTO_MAX_SECTORID (UINT32_MAX - 1)
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#define PSYNC_CRYPTO_INVALID_SECTORID (UINT32_MAX)
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#define PSYNC_CRYPTO_HASH_TREE_SECTORS \
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(PSYNC_CRYPTO_SECTOR_SIZE / PSYNC_CRYPTO_AUTH_SIZE)
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typedef uint32_t psync_crypto_sectorid_t;
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typedef int32_t psync_crypto_sectorid_diff_t;
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typedef struct {
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psync_tree tree;
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psync_crypto_sectorid_t sectorid;
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uint32_t logoffset;
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psync_crypto_sector_auth_t auth;
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} psync_sector_inlog_t;
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typedef psync_crypto_sector_auth_t
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psync_crypto_auth_sector_t[PSYNC_CRYPTO_HASH_TREE_SECTORS];
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int psync_fs_crypto_init_log(psync_openfile_t *of);
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int psync_fs_crypto_read_newfile_locked(psync_openfile_t *of, char *buf,
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uint64_t size, uint64_t offset);
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int psync_fs_crypto_write_newfile_locked(psync_openfile_t *of, const char *buf,
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uint64_t size, uint64_t offset);
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int psync_fs_crypto_read_modified_locked(psync_openfile_t *of, char *buf,
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uint64_t size, uint64_t offset);
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int psync_fs_crypto_write_modified_locked(psync_openfile_t *of, const char *buf,
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uint64_t size, uint64_t offset);
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int psync_fs_crypto_ftruncate(psync_openfile_t *of, uint64_t size);
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int psync_fs_crypto_flush_file(psync_openfile_t *of);
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psync_crypto_sectorid_t
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psync_fs_crypto_data_sectorid_by_sectorid(psync_crypto_sectorid_t sectorid);
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void psync_fs_crypto_offsets_by_plainsize(uint64_t size,
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psync_crypto_offsets_t *offsets);
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uint64_t psync_fs_crypto_plain_size(uint64_t cryptosize);
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uint64_t psync_fs_crypto_crypto_size(uint64_t plainsize);
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void psync_fs_crypto_get_auth_sector_off(psync_crypto_sectorid_t sectorid,
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uint32_t level,
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psync_crypto_offsets_t *offsets,
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uint64_t *offset, uint32_t *size,
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uint32_t *authid);
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void psync_fs_crypto_check_logs();
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#endif
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