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/* Copyright (c) 2005 PrimeBase Technologies GmbH
*
* PrimeBase XT
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* 2005-01-12 Paul McCullagh
*
* H&G2JCtL
*/
#ifndef __xt_filesys_h__
#define __xt_filesys_h__
#ifdef XT_WIN
#include <time.h>
#else
#include <sys/time.h>
#include <dirent.h>
#endif
#include <sys/stat.h>
#include "xt_defs.h"
#include "lock_xt.h"
#ifdef XT_WIN
#define XT_FILE_IN_USE(x) ((x) == ERROR_SHARING_VIOLATION)
#define XT_FILE_ACCESS_DENIED(x) ((x) == ERROR_ACCESS_DENIED || (x) == ERROR_NETWORK_ACCESS_DENIED)
#define XT_FILE_TOO_MANY_OPEN(x) ((x) == ERROR_TOO_MANY_OPEN_FILES)
#define XT_FILE_NOT_FOUND(x) ((x) == ERROR_FILE_NOT_FOUND || (x) == ERROR_PATH_NOT_FOUND)
#else
#define XT_FILE_IN_USE(x) ((x) == ETXTBSY)
#define XT_FILE_ACCESS_DENIED(x) ((x) == EACCES)
#define XT_FILE_TOO_MANY_OPEN(x) ((x) == EMFILE)
#define XT_FILE_NOT_FOUND(x) ((x) == ENOENT)
#endif
struct XTOpenFile;
#define XT_MASK ((S_IRUSR | S_IWUSR) | (S_IRGRP | S_IWGRP) | (S_IROTH))
#define XT_FS_DEFAULT 0 /* Open for read/write, error if does not exist. */
#define XT_FS_READONLY 1 /* Open for read only (otherwize read/write). */
#define XT_FS_CREATE 2 /* Create if the file does not exist. */
#define XT_FS_EXCLUSIVE 4 /* Create, and generate an error if it already exists. */
#define XT_FS_MISSING_OK 8 /* Set this flag if you don't want to throw an error if the file does not exist! */
#define XT_FS_MAKE_PATH 16 /* Create the path if it does not exist. */
#define XT_FS_DIRECT_IO 32 /* Use direct I/O on this file if possible (O_DIRECT). */
xtBool xt_fs_exists(char *path);
xtBool xt_fs_delete(struct XTThread *self, char *path);
xtBool xt_fs_file_not_found(int err);
void xt_fs_mkdir(struct XTThread *self, char *path);
void xt_fs_mkpath(struct XTThread *self, char *path);
xtBool xt_fs_rmdir(struct XTThread *self, char *path);
xtBool xt_fs_stat(struct XTThread *self, char *path, off_t *size, struct timespec *mod_time);
void xt_fs_move(struct XTThread *self, char *from_path, char *to_path);
xtBool xt_fs_rename(struct XTThread *self, char *from_path, char *to_path);
#ifdef XT_WIN
#define XT_FD HANDLE
#define XT_NULL_FD INVALID_HANDLE_VALUE
#else
#define XT_FD int
#define XT_NULL_FD (-1)
#endif
typedef struct XTFileMemMap {
xtWord1 *mm_start; /* The in-memory start of the map. */
#ifdef XT_WIN
HANDLE mm_mapdes;
#endif
off_t mm_length; /* The length of the file map. */
XTRWMutexRec mm_lock; /* The file map R/W lock. */
size_t mm_grow_size; /* The amount by which the map file is increased. */
} XTFileMemMapRec, *XTFileMemMapPtr;
typedef struct XTFile {
u_int fil_ref_count; /* The number of open file structure referencing this file. */
char *fil_path;
u_int fil_id; /* This is used by the disk cache to identify a file in the hash index. */
XT_FD fil_filedes; /* The shared file descriptor (pread and pwrite allow this), on Windows this is used only for mmapped files */
u_int fil_handle_count; /* Number of references in the case of mmapped fil_filedes, both Windows and Unix */
XTFileMemMapPtr fil_memmap; /* Non-null if this file is memory mapped. */
} XTFileRec, *XTFilePtr;
typedef struct XTFileRef {
XTFilePtr fr_file;
u_int fr_id; /* Copied from above (small optimisation). */
} XTFileRefRec, *XTFileRefPtr;
typedef struct XTOpenFile : public XTFileRef {
XT_FD of_filedes;
} XTOpenFileRec, *XTOpenFilePtr;
void xt_fs_init(struct XTThread *self);
void xt_fs_exit(struct XTThread *self);
XTFilePtr xt_fs_get_file(struct XTThread *self, char *file_name);
void xt_fs_release_file(struct XTThread *self, XTFilePtr file_ptr);
XTOpenFilePtr xt_open_file(struct XTThread *self, char *file, int mode);
XTOpenFilePtr xt_open_file_ns(char *file, int mode);
xtBool xt_open_file_ns(XTOpenFilePtr *fh, char *file, int mode);
void xt_close_file(struct XTThread *self, XTOpenFilePtr f);
xtBool xt_close_file_ns(XTOpenFilePtr f);
char *xt_file_path(struct XTFileRef *of);
xtBool xt_lock_file(struct XTThread *self, XTOpenFilePtr of);
void xt_unlock_file(struct XTThread *self, XTOpenFilePtr of);
off_t xt_seek_eof_file(struct XTThread *self, XTOpenFilePtr of);
xtBool xt_set_eof_file(struct XTThread *self, XTOpenFilePtr of, off_t offset);
xtBool xt_pwrite_file(XTOpenFilePtr of, off_t offset, size_t size, void *data, struct XTIOStats *timer, struct XTThread *thread);
xtBool xt_pread_file(XTOpenFilePtr of, off_t offset, size_t size, size_t min_size, void *data, size_t *red_size, struct XTIOStats *timer, struct XTThread *thread);
xtBool xt_flush_file(XTOpenFilePtr of, struct XTIOStats *timer, struct XTThread *thread);
typedef struct XTOpenDir {
char *od_path;
#ifdef XT_WIN
HANDLE od_handle;
WIN32_FIND_DATA od_data;
#else
char *od_filter;
struct dirent od_entry;
DIR *od_dir;
#endif
} XTOpenDirRec, *XTOpenDirPtr;
XTOpenDirPtr xt_dir_open(struct XTThread *self, c_char *path, c_char *filter);
void xt_dir_close(struct XTThread *self, XTOpenDirPtr od);
xtBool xt_dir_next(struct XTThread *self, XTOpenDirPtr od);
char *xt_dir_name(struct XTThread *self, XTOpenDirPtr od);
xtBool xt_dir_is_file(struct XTThread *self, XTOpenDirPtr od);
off_t xt_dir_file_size(struct XTThread *self, XTOpenDirPtr od);
typedef struct XTMapFile : public XTFileRef {
XTFileMemMapPtr mf_memmap;
} XTMapFileRec, *XTMapFilePtr;
XTMapFilePtr xt_open_fmap(struct XTThread *self, char *file, size_t grow_size);
void xt_close_fmap(struct XTThread *self, XTMapFilePtr map);
xtBool xt_close_fmap_ns(XTMapFilePtr map);
xtBool xt_pwrite_fmap(XTMapFilePtr map, off_t offset, size_t size, void *data, struct XTIOStats *timer, struct XTThread *thread);
xtBool xt_pread_fmap(XTMapFilePtr map, off_t offset, size_t size, size_t min_size, void *data, size_t *red_size, struct XTIOStats *timer, struct XTThread *thread);
xtBool xt_pread_fmap_4(XTMapFilePtr map, off_t offset, xtWord4 *value, struct XTIOStats *timer, struct XTThread *thread);
xtBool xt_flush_fmap(XTMapFilePtr map, struct XTIOStats *stat, struct XTThread *thread);
xtWord1 *xt_lock_fmap_ptr(XTMapFilePtr map, off_t offset, size_t size, struct XTIOStats *timer, struct XTThread *thread);
void xt_unlock_fmap_ptr(XTMapFilePtr map, struct XTThread *thread);
void xt_fs_copy_file(struct XTThread *self, char *from_path, char *to_path);
void xt_fs_copy_dir(struct XTThread *self, const char *from, const char *to);
#endif
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