int ntfs_mkdir_r (struct _reent *r, const char *path, int mode)
{
ntfs_log_trace("path %s, mode %i\n", path, mode);
ntfs_vd *vd = NULL;
ntfs_inode *ni = NULL;
// Get the volume descriptor for this path
vd = ntfsGetVolume(path);
if (!vd) {
r->_errno = ENODEV;
return -1;
}
// Lock
ntfsLock(vd);
// Create the directory
ni = ntfsCreate(vd, path, S_IFDIR, NULL);
if (!ni) {
ntfsUnlock(vd);
r->_errno = errno;
return -1;
}
// Close the directory
ntfsCloseEntry(vd, ni);
// Unlock
ntfsUnlock(vd);
return 0;
}
int ntfs_link_r (struct _reent *r, const char *existing, const char *newLink)
{
ntfs_log_trace("existing %s, newLink %s\n", existing, newLink);
ntfs_vd *vd = NULL;
ntfs_inode *ni = NULL;
// Get the volume descriptor for this path
vd = ntfsGetVolume(existing);
if (!vd) {
r->_errno = ENODEV;
return -1;
}
// Lock
ntfsLock(vd);
// Create a symbolic link between the two paths
ni = ntfsCreate(vd, existing, S_IFLNK, newLink);
if (!ni) {
ntfsUnlock(vd);
r->_errno = errno;
return -1;
}
// Close the symbolic link
ntfsCloseEntry(vd, ni);
// Unlock
ntfsUnlock(vd);
return 0;
}
int ntfs_open_r(struct _reent *r, void *fileStruct, const char *path, int flags, int mode)
{
ntfs_log_trace("fileStruct %p, path %s, flags %i, mode %i\n", (void *) fileStruct, path, flags, mode);
ntfs_file_state* file = STATE(fileStruct);
// Get the volume descriptor for this path
file->vd = ntfsGetVolume(path);
if (!file->vd) {
r->_errno = ENODEV;
return -1;
}
// Lock
ntfsLock(file->vd);
// Determine which mode the file is opened for
file->flags = flags;
if ((flags & 0x03) == O_RDONLY) {
file->read = true;
file->write = false;
file->append = false;
} else if ((flags & 0x03) == O_WRONLY) {
file->read = false;
file->write = true;
file->append = (flags & O_APPEND);
} else if ((flags & 0x03) == O_RDWR) {
file->read = true;
file->write = true;
file->append = (flags & O_APPEND);
} else {
r->_errno = EACCES;
ntfsUnlock(file->vd);
return -1;
}
// Try and find the file and (if found) ensure that it is not a directory
file->ni = ntfsOpenEntry(file->vd, path);
if (file->ni && (file->ni->mrec->flags & MFT_RECORD_IS_DIRECTORY)) {
ntfsCloseEntry(file->vd, file->ni);
ntfsUnlock(file->vd);
r->_errno = EISDIR;
return -1;
}
// Are we creating this file?
if ((flags & O_CREAT) && !file->ni) {
// Create the file
file->ni = ntfsCreate(file->vd, path, S_IFREG, NULL);
if (!file->ni) {
ntfsUnlock(file->vd);
return -1;
}
}
// Sanity check, the file should be open by now
if (!file->ni) {
ntfsUnlock(file->vd);
r->_errno = ENOENT;
return -1;
}
// Open the files data attribute
file->data_na = ntfs_attr_open(file->ni, AT_DATA, AT_UNNAMED, 0);
if (!file->data_na) {
ntfsCloseEntry(file->vd, file->ni);
ntfsUnlock(file->vd);
return -1;
}
// Determine if this files data is compressed and/or encrypted
file->compressed = NAttrCompressed(file->data_na) || (file->ni->flags & FILE_ATTR_COMPRESSED);
file->encrypted = NAttrEncrypted(file->data_na) || (file->ni->flags & FILE_ATTR_ENCRYPTED);
// We cannot read/write encrypted files
if (file->encrypted) {
ntfs_attr_close(file->data_na);
ntfsCloseEntry(file->vd, file->ni);
ntfsUnlock(file->vd);
r->_errno = EACCES;
return -1;
}
// Make sure we aren't trying to write to a read-only file
if ((file->ni->flags & FILE_ATTR_READONLY) && file->write) {
ntfs_attr_close(file->data_na);
ntfsCloseEntry(file->vd, file->ni);
ntfsUnlock(file->vd);
r->_errno = EROFS;
return -1;
}
// Truncate the file if requested
if ((flags & O_TRUNC) && file->write) {
if (ntfs_attr_truncate(file->data_na, 0)) {
ntfs_attr_close(file->data_na);
ntfsCloseEntry(file->vd, file->ni);
ntfsUnlock(file->vd);
r->_errno = errno;
return -1;
}
}
// Set the files current position and length
file->pos = 0;
file->len = file->data_na->data_size;
ntfs_log_trace("file->len %llu\n", file->len);
// Update file times
ntfsUpdateTimes(file->vd, file->ni, NTFS_UPDATE_ATIME);
// Insert the file into the double-linked FILO list of open files
if (file->vd->firstOpenFile) {
file->nextOpenFile = file->vd->firstOpenFile;
file->vd->firstOpenFile->prevOpenFile = file;
} else {
file->nextOpenFile = NULL;
}
file->prevOpenFile = NULL;
file->vd->firstOpenFile = file;
file->vd->openFileCount++;
file->is_ntfs = 1;
// Unlock
ntfsUnlock(file->vd);
return (int)(intptr_t)fileStruct;
//return (int)(s64) fileStruct;
}