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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Chunk I/O
* =========
* Copyright 2018 Eduardo Silva <eduardo@monkey.io>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef CIO_FILE_H
#define CIO_FILE_H
#include <chunkio/cio_chunk.h>
#include <chunkio/cio_file_st.h>
#include <chunkio/cio_crc32.h>
/* Linux fallocate() strategy */
#define CIO_FILE_LINUX_FALLOCATE 0
#define CIO_FILE_LINUX_POSIX_FALLOCATE 1
struct cio_file {
int fd; /* file descriptor */
int flags; /* open flags */
int synced; /* sync after latest write ? */
int allocate_strategy; /* linux-only: fallocate strategy */
size_t fs_size; /* original size in the file system */
size_t data_size; /* number of bytes used */
size_t page_size; /* curent page size */
size_t alloc_size; /* allocated size */
size_t realloc_size; /* chunk size to increase alloc */
char *path; /* root path + stream */
char *map; /* map of data */
#ifdef _WIN32
HANDLE backing_file;
HANDLE backing_mapping;
#endif
/* cached addr */
char *st_content;
crc_t crc_cur; /* crc: current value calculated */
int crc_reset; /* crc: must recalculate from the beginning ? */
};
size_t cio_file_real_size(struct cio_file *cf);
struct cio_file *cio_file_open(struct cio_ctx *ctx,
struct cio_stream *st,
struct cio_chunk *ch,
int flags,
size_t size,
int *err);
void cio_file_close(struct cio_chunk *ch, int delete);
int cio_file_delete(struct cio_ctx *ctx, struct cio_stream *st, const char *name);
int cio_file_write(struct cio_chunk *ch, const void *buf, size_t count);
int cio_file_write_metadata(struct cio_chunk *ch, char *buf, size_t size);
int cio_file_sync(struct cio_chunk *ch);
int cio_file_resize(struct cio_file *cf, size_t new_size);
char *cio_file_hash(struct cio_file *cf);
void cio_file_hash_print(struct cio_file *cf);
void cio_file_calculate_checksum(struct cio_file *cf, crc_t *out);
void cio_file_scan_dump(struct cio_ctx *ctx, struct cio_stream *st);
int cio_file_read_prepare(struct cio_ctx *ctx, struct cio_chunk *ch);
int cio_file_content_copy(struct cio_chunk *ch,
void **out_buf, size_t *out_size);
int cio_file_is_up(struct cio_chunk *ch, struct cio_file *cf);
int cio_file_down(struct cio_chunk *ch);
int cio_file_up(struct cio_chunk *ch);
int cio_file_up_force(struct cio_chunk *ch);
int cio_file_lookup_user(char *user, void **result);
int cio_file_lookup_group(char *group, void **result);
int cio_file_update_size(struct cio_file *cf);
#define cio_file_report_runtime_error() { cio_file_native_report_runtime_error(); }
#define cio_file_report_os_error() { cio_file_native_report_os_error(); }
#endif
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