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/* SPDX-License-Identifier: GPL-3.0-only */
#ifndef _PATH_H_
#define _PATH_H_
#include <limits.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/stat.h>
#include <list.h>
#include <atomic.h>
#include <ssh.h>
struct path {
struct list_head list; /* mscp->path_list */
char *path; /* file path */
size_t size; /* size of file on this path */
mode_t mode; /* permission */
char *dst_path; /* copy dst path */
int state;
lock lock;
refcnt refcnt;
};
#define FILE_STATE_INIT 0
#define FILE_STATE_OPENED 1
#define FILE_STATE_DONE 2
struct chunk {
struct list_head list; /* chunk_pool->list */
struct path *p;
size_t off; /* offset of this chunk on the file on path p */
size_t len; /* length of this chunk */
size_t done; /* copied bytes for this chunk by a thread */
};
struct chunk_pool {
struct list_head list; /* list of struct chunk */
size_t count;
lock lock;
int state;
};
/* initialize chunk pool */
void chunk_pool_init(struct chunk_pool *cp);
/* acquire a chunk from pool. return value is NULL indicates no more
* chunk, GET_CHUNK_WAIT means caller should waits until a chunk is
* added, or pointer to chunk.
*/
struct chunk *chunk_pool_pop(struct chunk_pool *cp);
#define CHUNK_POP_WAIT ((void *)-1)
/* set and check fillingchunks to this pool has finished */
void chunk_pool_set_filled(struct chunk_pool *cp);
bool chunk_pool_is_filled(struct chunk_pool *cp);
/* return number of chunks in the pool */
size_t chunk_pool_size(struct chunk_pool *cp);
/* return true if chunk pool is empty (all chunks are already poped) */
bool chunk_pool_is_empty(struct chunk_pool *cp);
/* free chunks in the chunk_pool */
void chunk_pool_release(struct chunk_pool *cp);
struct path_resolve_args {
size_t *total_bytes;
/* args to resolve src path to dst path */
const char *src_path;
const char *dst_path;
bool src_path_is_dir;
bool dst_path_is_dir;
bool dst_path_should_dir;
/* args to resolve chunks for a path */
struct chunk_pool *cp;
int nr_conn;
size_t min_chunk_sz;
size_t max_chunk_sz;
size_t chunk_align;
};
/* recursivly walk through src_path and fill path_list for each file */
int walk_src_path(sftp_session src_sftp, const char *src_path,
struct list_head *path_list, struct path_resolve_args *a);
/* free struct path */
void free_path(struct path *p);
/* copy a chunk. either src_sftp or dst_sftp is not null, and another is null */
int copy_chunk(struct chunk *c, sftp_session src_sftp, sftp_session dst_sftp,
int nr_ahead, int buf_sz, bool preserve_ts, size_t *counter);
/* just print contents. just for debugging */
void path_dump(struct list_head *path_list);
#endif /* _PATH_H_ */
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