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/*-------------------------------------------------------------------------
*
* Assorted utility functions to work on files.
*
*
* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/common/file_utils.h
*
*-------------------------------------------------------------------------
*/
#ifndef FILE_UTILS_H
#define FILE_UTILS_H
#include <dirent.h>
typedef enum PGFileType
{
PGFILETYPE_ERROR,
PGFILETYPE_UNKNOWN,
PGFILETYPE_REG,
PGFILETYPE_DIR,
PGFILETYPE_LNK,
} PGFileType;
typedef enum DataDirSyncMethod
{
DATA_DIR_SYNC_METHOD_FSYNC,
DATA_DIR_SYNC_METHOD_SYNCFS,
} DataDirSyncMethod;
struct iovec; /* avoid including port/pg_iovec.h here */
#ifdef FRONTEND
extern int fsync_fname(const char *fname, bool isdir);
extern void sync_pgdata(const char *pg_data, int serverVersion,
DataDirSyncMethod sync_method);
extern void sync_dir_recurse(const char *dir, DataDirSyncMethod sync_method);
extern int durable_rename(const char *oldfile, const char *newfile);
extern int fsync_parent_path(const char *fname);
#endif
extern PGFileType get_dirent_type(const char *path,
const struct dirent *de,
bool look_through_symlinks,
int elevel);
extern int compute_remaining_iovec(struct iovec *destination,
const struct iovec *source,
int iovcnt,
size_t transferred);
extern ssize_t pg_pwritev_with_retry(int fd,
const struct iovec *iov,
int iovcnt,
off_t offset);
extern ssize_t pg_pwrite_zeros(int fd, size_t size, off_t offset);
/* Filename components */
#define PG_TEMP_FILES_DIR "pgsql_tmp"
#define PG_TEMP_FILE_PREFIX "pgsql_tmp"
#endif /* FILE_UTILS_H */
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