mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-11-15 16:05:10 +01:00
d90a6f0429
*updated libntfs-wii to version 2012.1.15 *updated libext2fs to e2fsprogs 1.42 *updated libfat to R4883
122 lines
2.9 KiB
C
122 lines
2.9 KiB
C
/**
|
|
* ntfsfile.c - devoptab file routines for NTFS-based devices.
|
|
* Copyright (c) 2010 Miigotu
|
|
* Copyright (c) 2009 Rhys "Shareese" Koedijk
|
|
* Copyright (c) 2006 Michael "Chishm" Chisholm
|
|
*
|
|
* This program/include file 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/include file 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
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#ifdef HAVE_STDLIB_H
|
|
#include <stdlib.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_STAT_H
|
|
#include <sys/stat.h>
|
|
#endif
|
|
#ifdef HAVE_FCNTL_H
|
|
#include <fcntl.h>
|
|
#endif
|
|
#ifdef HAVE_ERRNO_H
|
|
#include <errno.h>
|
|
#endif
|
|
#ifdef HAVE_STRING_H
|
|
#include <string.h>
|
|
#endif
|
|
|
|
#include "ntfsinternal.h"
|
|
#include "ntfsfile.h"
|
|
#include "ntfs.h"
|
|
#include "ntfsfile_frag.h"
|
|
|
|
s64 ntfs_attr_getfragments(ntfs_attr *na, const s64 pos, s64 count, u64 offset,
|
|
_ntfs_frag_append_t append_fragment, void *callback_data);
|
|
|
|
static inline u8 size_to_shift(u32 size)
|
|
{
|
|
u8 ret = 0;
|
|
while (size)
|
|
{
|
|
ret++;
|
|
size >>= 1;
|
|
}
|
|
return ret - 1;
|
|
}
|
|
|
|
int _NTFS_get_fragments (const char *path,
|
|
_ntfs_frag_append_t append_fragment, void *callback_data)
|
|
{
|
|
struct _reent r;
|
|
ntfs_file_state file_st, *file = &file_st;
|
|
ssize_t read = 0;
|
|
int ret_val = -11;
|
|
|
|
// Open File
|
|
r._errno = 0;
|
|
int fd = ntfs_open_r(&r, file, path, O_RDONLY, 0);
|
|
if (fd != (int)file) return -12;
|
|
|
|
|
|
// Sanity check
|
|
if (!file || !file->vd || !file->ni || !file->data_na) {
|
|
//r->_errno = EINVAL;
|
|
return -13;
|
|
}
|
|
|
|
// Lock
|
|
ntfsLock(file->vd);
|
|
|
|
|
|
u64 offset = 0;
|
|
u64 len = file->len;
|
|
|
|
// Read from the files data attribute
|
|
while (len) {
|
|
s64 ret = ntfs_attr_getfragments(file->data_na, file->pos,
|
|
len, offset, append_fragment, callback_data);
|
|
if (ret <= 0 || ret > len) {
|
|
ntfsUnlock(file->vd);
|
|
//r->_errno = errno;
|
|
ret_val = -14;
|
|
if (ret < 0) ret_val = ret;
|
|
goto out;
|
|
}
|
|
offset += ret;
|
|
len -= ret;
|
|
file->pos += ret;
|
|
read += ret;
|
|
}
|
|
|
|
u32 shift = size_to_shift(file->ni->vol->sector_size);
|
|
|
|
// set file size
|
|
append_fragment(callback_data, file->len >> shift, 0, 0);
|
|
// success
|
|
ret_val = 0;
|
|
|
|
|
|
out:
|
|
// Unlock
|
|
ntfsUnlock(file->vd);
|
|
// Close the file
|
|
ntfs_close_r (&r, fd);
|
|
|
|
return ret_val;
|
|
}
|
|
|