mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-12-18 16:01:58 +01:00
*fix for loading games of NTFS partitions with sector size > 512 (thx oggzee for pointing it out)
This commit is contained in:
dimok321
parent
f6c9003574
commit
3994181361
@ -62,7 +62,7 @@
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#include "ntfs.h"
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#include "ntfsfile_frag.h"
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static u8 size_to_shift(u32 size)
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static inline u8 size_to_shift(u32 size)
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{
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u8 ret = 0;
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while (size)
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@ -6,7 +6,7 @@
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*
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* This program/include file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program/include file is distributed in the hope that it will be
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@ -44,300 +44,20 @@
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#include "ntfs.h"
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#include "ntfsfile_frag.h"
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#define STATE(x) ((ntfs_file_state*)x)
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// for easier comparision of ntfsfile.c against ntfsfile_frag.c
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// everything is included but ifdef-ed out
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#if 0
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void ntfsCloseFile (ntfs_file_state *file)
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{
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// Sanity check
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if (!file || !file->vd)
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return;
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// Special case fix ups for compressed and/or encrypted files
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if (file->compressed)
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ntfs_attr_pclose(file->data_na);
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#ifdef HAVE_SETXATTR
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if (file->encrypted)
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ntfs_efs_fixup_attribute(NULL, file->data_na);
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#endif
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// Close the file data attribute (if open)
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if (file->data_na)
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ntfs_attr_close(file->data_na);
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// Sync the file (and its attributes) to disc
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if(file->write)
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{
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ntfsUpdateTimes(file->vd, file->ni, NTFS_UPDATE_ATIME | NTFS_UPDATE_CTIME);
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ntfsSync(file->vd, file->ni);
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}
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if (file->read)
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ntfsUpdateTimes(file->vd, file->ni, NTFS_UPDATE_ATIME);
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// Close the file (if open)
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if (file->ni)
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ntfsCloseEntry(file->vd, file->ni);
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// Reset the file state
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file->ni = NULL;
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file->data_na = NULL;
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file->flags = 0;
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file->read = false;
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file->write = false;
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file->append = false;
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file->pos = 0;
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file->len = 0;
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return;
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}
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int ntfs_open_r (struct _reent *r, void *fileStruct, const char *path, int flags, int mode)
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{
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ntfs_log_trace("fileStruct %p, path %s, flags %i, mode %i\n", fileStruct, path, flags, mode);
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ntfs_file_state* file = STATE(fileStruct);
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// Get the volume descriptor for this path
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file->vd = ntfsGetVolume(path);
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if (!file->vd) {
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r->_errno = ENODEV;
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return -1;
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}
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// Lock
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ntfsLock(file->vd);
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// Determine which mode the file is opened for
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file->flags = flags;
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if ((flags & 0x03) == O_RDONLY) {
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file->read = true;
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file->write = false;
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file->append = false;
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} else if ((flags & 0x03) == O_WRONLY) {
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file->read = false;
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file->write = true;
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file->append = (flags & O_APPEND);
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} else if ((flags & 0x03) == O_RDWR) {
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file->read = true;
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file->write = true;
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file->append = (flags & O_APPEND);
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} else {
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r->_errno = EACCES;
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ntfsUnlock(file->vd);
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return -1;
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}
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// Try and find the file and (if found) ensure that it is not a directory
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file->ni = ntfsOpenEntry(file->vd, path);
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if (file->ni && (file->ni->mrec->flags & MFT_RECORD_IS_DIRECTORY)) {
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ntfsCloseEntry(file->vd, file->ni);
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ntfsUnlock(file->vd);
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r->_errno = EISDIR;
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return -1;
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}
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// Are we creating this file?
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if (flags & O_CREAT) {
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// The file SHOULD NOT already exist
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if (file->ni) {
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ntfsCloseEntry(file->vd, file->ni);
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ntfsUnlock(file->vd);
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r->_errno = EEXIST;
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return -1;
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}
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// Create the file
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file->ni = ntfsCreate(file->vd, path, S_IFREG, NULL);
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if (!file->ni) {
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ntfsUnlock(file->vd);
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return -1;
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}
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}
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// Sanity check, the file should be open by now
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if (!file->ni) {
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ntfsUnlock(file->vd);
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r->_errno = ENOENT;
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return -1;
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}
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// Open the files data attribute
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file->data_na = ntfs_attr_open(file->ni, AT_DATA, AT_UNNAMED, 0);
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if(!file->data_na) {
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ntfsCloseEntry(file->vd, file->ni);
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ntfsUnlock(file->vd);
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return -1;
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}
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// Determine if this files data is compressed and/or encrypted
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file->compressed = NAttrCompressed(file->data_na) || (file->ni->flags & FILE_ATTR_COMPRESSED);
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file->encrypted = NAttrEncrypted(file->data_na) || (file->ni->flags & FILE_ATTR_ENCRYPTED);
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// We cannot read/write encrypted files
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if (file->encrypted) {
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ntfs_attr_close(file->data_na);
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ntfsCloseEntry(file->vd, file->ni);
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ntfsUnlock(file->vd);
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r->_errno = EACCES;
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return -1;
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}
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// Make sure we aren't trying to write to a read-only file
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if ((file->ni->flags & FILE_ATTR_READONLY) && file->write) {
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ntfs_attr_close(file->data_na);
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ntfsCloseEntry(file->vd, file->ni);
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ntfsUnlock(file->vd);
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r->_errno = EROFS;
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return -1;
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}
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// Truncate the file if requested
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if ((flags & O_TRUNC) && file->write) {
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if (ntfs_attr_truncate(file->data_na, 0)) {
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ntfs_attr_close(file->data_na);
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ntfsCloseEntry(file->vd, file->ni);
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ntfsUnlock(file->vd);
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r->_errno = errno;
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return -1;
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}
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}
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// Set the files current position and length
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file->pos = 0;
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file->len = file->data_na->data_size;
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ntfs_log_trace("file->len %d\n", file->len);
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// Update file times
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ntfsUpdateTimes(file->vd, file->ni, NTFS_UPDATE_ATIME);
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// Insert the file into the double-linked FILO list of open files
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if (file->vd->firstOpenFile) {
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file->nextOpenFile = file->vd->firstOpenFile;
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file->vd->firstOpenFile->prevOpenFile = file;
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} else {
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file->nextOpenFile = NULL;
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}
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file->prevOpenFile = NULL;
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file->vd->firstOpenFile = file;
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file->vd->openFileCount++;
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// Unlock
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ntfsUnlock(file->vd);
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return (int)fileStruct;
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}
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int ntfs_close_r (struct _reent *r, int fd)
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{
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ntfs_log_trace("fd %p\n", fd);
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ntfs_file_state* file = STATE(fd);
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// Sanity check
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if (!file || !file->vd) {
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r->_errno = EBADF;
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return -1;
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}
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// Lock
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ntfsLock(file->vd);
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// Close the file
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ntfsCloseFile(file);
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// Remove the file from the double-linked FILO list of open files
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file->vd->openFileCount--;
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if (file->nextOpenFile)
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file->nextOpenFile->prevOpenFile = file->prevOpenFile;
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if (file->prevOpenFile)
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file->prevOpenFile->nextOpenFile = file->nextOpenFile;
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else
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file->vd->firstOpenFile = file->nextOpenFile;
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// Unlock
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ntfsUnlock(file->vd);
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return 0;
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}
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ssize_t ntfs_write_r (struct _reent *r, int fd, const char *ptr, size_t len)
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{
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ntfs_log_trace("fd %p, ptr %p, len %Li\n", fd, ptr, len);
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ntfs_file_state* file = STATE(fd);
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ssize_t written = 0;
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off_t old_pos = 0;
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// Sanity check
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if (!file || !file->vd || !file->ni || !file->data_na) {
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r->_errno = EINVAL;
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return -1;
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}
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// Short circuit cases where we don't actually have to do anything
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if (!ptr || len <= 0) {
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return 0;
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}
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// Lock
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ntfsLock(file->vd);
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// Check that we are allowed to write to this file
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if (!file->write) {
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ntfsUnlock(file->vd);
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r->_errno = EACCES;
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return -1;
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}
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// If we are in append mode, backup the current position and move to the end of the file
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if (file->append) {
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old_pos = file->pos;
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file->pos = file->len;
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}
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// Write to the files data atrribute
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while (len) {
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ssize_t ret = ntfs_attr_pwrite(file->data_na, file->pos, len, ptr);
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if (ret <= 0) {
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ntfsUnlock(file->vd);
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r->_errno = errno;
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return -1;
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}
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len -= ret;
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file->pos += ret;
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written += ret;
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}
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// If we are in append mode, restore the current position to were it was prior to this write
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if (file->append) {
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file->pos = old_pos;
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}
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// Mark the file for archiving (if we actually wrote something)
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if (written)
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file->ni->flags |= FILE_ATTR_ARCHIVE;
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// Update the files data length
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file->len = file->data_na->data_size;
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// Unlock
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ntfsUnlock(file->vd);
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return written;
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}
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#endif
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s64 ntfs_attr_getfragments(ntfs_attr *na, const s64 pos, s64 count, u64 offset,
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_ntfs_frag_append_t append_fragment, void *callback_data);
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static inline u8 size_to_shift(u32 size)
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{
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u8 ret = 0;
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while (size)
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{
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ret++;
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size >>= 1;
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}
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return ret - 1;
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}
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int _NTFS_get_fragments (const char *path,
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_ntfs_frag_append_t append_fragment, void *callback_data)
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{
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@ -352,39 +72,15 @@ int _NTFS_get_fragments (const char *path,
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if (fd != (int)file) return -12;
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// Sanity check
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if (!file || !file->vd || !file->ni || !file->data_na) {
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//r->_errno = EINVAL;
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return -13;
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}
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/*
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// Short circuit cases where we don't actually have to do anything
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if (!ptr || len <= 0) {
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return 0;
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}
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*/
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// Lock
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ntfsLock(file->vd);
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/*
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// Check that we are allowed to read from this file
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if (!file->read) {
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ntfsUnlock(file->vd);
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r->_errno = EACCES;
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return -1;
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}
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// Don't read past the end of file
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if (file->pos + len > file->len) {
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r->_errno = EOVERFLOW;
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len = file->len - file->pos;
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ntfs_log_trace("EOVERFLOW");
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}
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*/
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u64 offset = 0;
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u64 len = file->len;
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@ -406,17 +102,13 @@ int _NTFS_get_fragments (const char *path,
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read += ret;
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}
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u32 shift = size_to_shift(file->ni->vol->sector_size);
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// set file size
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append_fragment(callback_data, file->len >> 9, 0, 0);
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append_fragment(callback_data, file->len >> shift, 0, 0);
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// success
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ret_val = 0;
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/*
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//ntfs_log_trace("file->pos: %d \n", (u32)file->pos);
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// Update file times (if we actually read something)
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if (read)
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ntfsUpdateTimes(file->vd, file->ni, NTFS_UPDATE_ATIME);
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*/
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out:
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// Unlock
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@ -427,154 +119,3 @@ out:
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return ret_val;
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}
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#if 0
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off_t ntfs_seek_r (struct _reent *r, int fd, off_t pos, int dir)
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{
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ntfs_log_trace("fd %p, pos %Li, dir %i\n", fd, pos, dir);
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ntfs_file_state* file = STATE(fd);
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off_t position = 0;
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// Sanity check
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if (!file || !file->vd || !file->ni || !file->data_na) {
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r->_errno = EINVAL;
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return -1;
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}
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// Lock
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ntfsLock(file->vd);
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// Set the files current position
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switch(dir) {
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case SEEK_SET: position = file->pos = MIN(MAX(pos, 0), file->len); break;
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case SEEK_CUR: position = file->pos = MIN(MAX(file->pos + pos, 0), file->len); break;
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case SEEK_END: position = file->pos = MIN(MAX(file->len + pos, 0), file->len); break;
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}
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// Unlock
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ntfsUnlock(file->vd);
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return position;
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}
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int ntfs_fstat_r (struct _reent *r, int fd, struct stat *st)
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{
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ntfs_log_trace("fd %p\n", fd);
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ntfs_file_state* file = STATE(fd);
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int ret = 0;
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// Sanity check
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if (!file || !file->vd || !file->ni || !file->data_na) {
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r->_errno = EINVAL;
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return -1;
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}
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// Short circuit cases were we don't actually have to do anything
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if (!st)
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return 0;
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// Get the file stats
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ret = ntfsStat(file->vd, file->ni, st);
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if (ret)
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r->_errno = errno;
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return ret;
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}
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int ntfs_ftruncate_r (struct _reent *r, int fd, off_t len)
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{
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ntfs_log_trace("fd %p, len %Li\n", fd, len);
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ntfs_file_state* file = STATE(fd);
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// Sanity check
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if (!file || !file->vd || !file->ni || !file->data_na) {
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r->_errno = EINVAL;
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return -1;
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}
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// Lock
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ntfsLock(file->vd);
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// Check that we are allowed to write to this file
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if (!file->write) {
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ntfsUnlock(file->vd);
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r->_errno = EACCES;
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return -1;
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}
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// For compressed files, only deleting and expanding contents are implemented
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if (file->compressed &&
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len > 0 &&
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len < file->data_na->initialized_size) {
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ntfsUnlock(file->vd);
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r->_errno = EOPNOTSUPP;
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return -1;
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}
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// Resize the files data attribute, either by expanding or truncating
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if (file->compressed && len > file->data_na->initialized_size) {
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char zero = 0;
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if (ntfs_attr_pwrite(file->data_na, len - 1, 1, &zero) <= 0) {
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ntfsUnlock(file->vd);
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r->_errno = errno;
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return -1;
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}
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} else {
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if (ntfs_attr_truncate(file->data_na, len)) {
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ntfsUnlock(file->vd);
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r->_errno = errno;
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return -1;
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}
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}
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// Mark the file for archiving (if we actually changed something)
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if (file->len != file->data_na->data_size)
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file->ni->flags |= FILE_ATTR_ARCHIVE;
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// Update file times (if we actually changed something)
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if (file->len != file->data_na->data_size)
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ntfsUpdateTimes(file->vd, file->ni, NTFS_UPDATE_AMCTIME);
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// Update the files data length
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file->len = file->data_na->data_size;
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// Sync the file (and its attributes) to disc
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ntfsSync(file->vd, file->ni);
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|
||||
// Unlock
|
||||
ntfsUnlock(file->vd);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ntfs_fsync_r (struct _reent *r, int fd)
|
||||
{
|
||||
ntfs_log_trace("fd %p\n", fd);
|
||||
|
||||
ntfs_file_state* file = STATE(fd);
|
||||
int ret = 0;
|
||||
|
||||
// Sanity check
|
||||
if (!file || !file->vd || !file->ni || !file->data_na) {
|
||||
r->_errno = EINVAL;
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Lock
|
||||
ntfsLock(file->vd);
|
||||
|
||||
// Sync the file (and its attributes) to disc
|
||||
ret = ntfsSync(file->vd, file->ni);
|
||||
if (ret)
|
||||
r->_errno = errno;
|
||||
|
||||
// Unlock
|
||||
ntfsUnlock(file->vd);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user