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_fsync_r(struct _reent *r, int fd)
{
ntfs_log_trace("fd %p\n", (void *) fd);
ntfs_file_state* file = STATE(((intptr_t)(s64)fd));
//ntfs_file_state* file = STATE(((s64) 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;
}
int ntfs_dirclose_r (struct _reent *r, DIR_ITER *dirState)
{
ntfs_log_trace("dirState %p\n", dirState);
ntfs_dir_state* dir = STATE(dirState);
// Sanity check
if (!dir || !dir->vd) {
r->_errno = EBADF;
return -1;
}
// Lock
ntfsLock(dir->vd);
// Close the directory
ntfsCloseDir(dir);
// Remove the directory from the double-linked FILO list of open directories
dir->vd->openDirCount--;
if (dir->nextOpenDir)
dir->nextOpenDir->prevOpenDir = dir->prevOpenDir;
if (dir->prevOpenDir)
dir->prevOpenDir->nextOpenDir = dir->nextOpenDir;
else
dir->vd->firstOpenDir = dir->nextOpenDir;
// Unlock
ntfsUnlock(dir->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 ntfsSync (ntfs_vd *vd, ntfs_inode *ni)
{
int res = 0;
// Sanity check
if (!vd) {
errno = ENODEV;
return -1;
}
// Sanity check
if (!ni) {
errno = ENOENT;
return -1;
}
// Lock
ntfsLock(vd);
// Sync the entry
res = ntfs_inode_sync(ni);
// Force the underlying device to sync
ntfs_device_sync(vd->dev);
// Unlock
ntfsUnlock(vd);
return res;
}
int ntfs_close_r(struct _reent *r, int fd)
{
ntfs_log_trace("fd %p\n", (void *) fd);
ntfs_file_state* file = STATE(((intptr_t)(s64)fd));
//ntfs_file_state* file = STATE(((s64) fd));
// Sanity check
if (!file || !file->vd) {
r->_errno = EBADF;
return -1;
}
// Lock
ntfsLock(file->vd);
// Close the file
ntfsCloseFile(file);
// Remove the file from the double-linked FILO list of open files
file->vd->openFileCount--;
if (file->nextOpenFile)
file->nextOpenFile->prevOpenFile = file->prevOpenFile;
if (file->prevOpenFile)
file->prevOpenFile->nextOpenFile = file->nextOpenFile;
else
file->vd->firstOpenFile = file->nextOpenFile;
// Unlock
ntfsUnlock(file->vd);
return 0;
}
s64 ntfs_seek64_r(struct _reent *r, int fd, s64 pos, int dir)
{
ntfs_log_trace("fd %p, pos %llu, dir %i\n", (void *) fd, pos, dir);
ntfs_file_state* file = STATE(((intptr_t)(s64)fd));
//ntfs_file_state* file = STATE(((s64) fd));
s64 position = 0;
// Sanity check
if (!file || !file->vd || !file->ni || !file->data_na) {
r->_errno = EINVAL;
return -1;
}
// Lock
ntfsLock(file->vd);
// Set the files current position
switch(dir) {
case SEEK_SET:
position = file->pos = MIN(MAX(pos, 0), file->len);
break;
case SEEK_CUR:
position = file->pos = MIN(MAX(file->pos + pos, 0), file->len);
break;
case SEEK_END:
position = file->pos = MIN(MAX(file->len + pos, 0), file->len);
break;
}
// Unlock
ntfsUnlock(file->vd);
return position;
}
int ntfs_dirreset_r (struct _reent *r, DIR_ITER *dirState)
{
ntfs_log_trace("dirState %p\n", dirState);
ntfs_dir_state* dir = STATE(dirState);
// Sanity check
if (!dir || !dir->vd || !dir->ni) {
r->_errno = EBADF;
return -1;
}
// Lock
ntfsLock(dir->vd);
// Move to the first entry in the directory
dir->current = dir->first;
// Update directory times
ntfsUpdateTimes(dir->vd, dir->ni, NTFS_UPDATE_ATIME);
// Unlock
ntfsUnlock(dir->vd);
return 0;
}
ssize_t ntfs_read_r(struct _reent *r, int fd, char *ptr, size_t len)
{
ntfs_log_trace("fd %p, ptr %p, len %u\n", (void *) fd, ptr, len);
ntfs_file_state* file = STATE(((intptr_t)(s64)fd));
//ntfs_file_state* file = STATE(((s64) fd));
ssize_t read = 0;
// Sanity check
if (!file || !file->vd || !file->ni || !file->data_na) {
r->_errno = EINVAL;
return -1;
}
// Short circuit cases where we don't actually have to do anything
if (!ptr || len <= 0) {
return 0;
}
// Lock
ntfsLock(file->vd);
// Check that we are allowed to read from this file
if (!file->read) {
ntfsUnlock(file->vd);
r->_errno = EACCES;
return -1;
}
// Don't read past the end of file
if (file->pos + len > file->len) {
r->_errno = EOVERFLOW;
len = file->len - file->pos;
ntfs_log_trace("EOVERFLOW");
}
ntfs_log_trace("file->pos:%d, len:%d, file->len:%d \n", (u32)file->pos, (u32)len, (u32)file->len);
// Read from the files data attribute
while (len) {
ssize_t ret = ntfs_attr_pread(file->data_na, file->pos, len, ptr);
if (ret <= 0 || ret > len) {
ntfsUnlock(file->vd);
r->_errno = errno;
return -1;
}
ptr += ret;
len -= ret;
file->pos += ret;
read += ret;
}
//ntfs_log_trace("file->pos: %d \n", (u32)file->pos);
// Update file times (if we actually read something)
// Unlock
ntfsUnlock(file->vd);
return read;
}
int ntfs_rename_r (struct _reent *r, const char *oldName, const char *newName)
{
ntfs_log_trace("oldName %s, newName %s\n", oldName, newName);
ntfs_vd *vd = NULL;
ntfs_inode *ni = NULL;
// Get the volume descriptor for this path
vd = ntfsGetVolume(oldName);
if (!vd) {
r->_errno = ENODEV;
return -1;
}
// Lock
ntfsLock(vd);
// You cannot rename between devices
if(vd != ntfsGetVolume(newName)) {
ntfsUnlock(vd);
r->_errno = EXDEV;
return -1;
}
// Check that there is no existing entry with the new name
ni = ntfsOpenEntry(vd, newName);
if (ni) {
ntfsCloseEntry(vd, ni);
ntfsUnlock(vd);
r->_errno = EEXIST;
return -1;
}
// Link the old entry with the new one
if (ntfsLink(vd, oldName, newName)) {
ntfsUnlock(vd);
return -1;
}
// Unlink the old entry
if (ntfsUnlink(vd, oldName)) {
if (ntfsUnlink(vd, newName)) {
ntfsUnlock(vd);
return -1;
}
ntfsUnlock(vd);
return -1;
}
// Unlock
ntfsUnlock(vd);
return 0;
}
int ntfs_dirnext_r (struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *filestat)
{
ntfs_log_trace("dirState %p, filename %p, filestat %p\n", dirState, filename, filestat);
ntfs_dir_state* dir = STATE(dirState);
ntfs_inode *ni = NULL;
// Sanity check
if (!dir || !dir->vd || !dir->ni) {
r->_errno = EBADF;
return -1;
}
// Lock
ntfsLock(dir->vd);
// Check that there is a entry waiting to be fetched
if (!dir->current) {
ntfsUnlock(dir->vd);
r->_errno = ENOENT;
return -1;
}
// Fetch the current entry
strcpy(filename, dir->current->name);
if(filestat != NULL)
{
if(strcmp(dir->current->name, ".") == 0 || strcmp(dir->current->name, "..") == 0)
{
memset(filestat, 0, sizeof(struct stat));
filestat->st_mode = S_IFDIR;
}
else
{
ni = ntfsOpenEntry(dir->vd, dir->current->name);
if (ni) {
ntfsStat(dir->vd, ni, filestat);
ntfsCloseEntry(dir->vd, ni);
}
}
}
// Move to the next entry in the directory
dir->current = dir->current->next;
// Update directory times
ntfsUpdateTimes(dir->vd, dir->ni, NTFS_UPDATE_ATIME);
// Unlock
ntfsUnlock(dir->vd);
return 0;
}
void ntfsDeinitVolume (ntfs_vd *vd)
{
// Sanity check
if (!vd) {
errno = ENODEV;
return;
}
// Lock
ntfsLock(vd);
// Close any directories which are still open (lazy programmers!)
ntfs_dir_state *nextDir = vd->firstOpenDir;
while (nextDir) {
ntfs_log_warning("Cleaning up orphaned directory @ %p\n", nextDir);
ntfsCloseDir(nextDir);
nextDir = nextDir->nextOpenDir;
}
// Close any files which are still open (lazy programmers!)
ntfs_file_state *nextFile = vd->firstOpenFile;
while (nextFile) {
ntfs_log_warning("Cleaning up orphaned file @ %p\n", nextFile);
ntfsCloseFile(nextFile);
nextFile = nextFile->nextOpenFile;
}
// Reset open directory and file stats
vd->openDirCount = 0;
vd->openFileCount = 0;
vd->firstOpenDir = NULL;
vd->firstOpenFile = NULL;
// Close the volumes current directory (if any)
//if (vd->cwd_ni) {
//ntfsCloseEntry(vd, vd->cwd_ni);
//vd->cwd_ni = NULL;
//}
// Force the underlying device to sync
ntfs_device_sync(vd->dev);
// Unlock
ntfsUnlock(vd);
#ifndef LIBXENON
// Deinitialise the volume lock
LWP_MutexDestroy(vd->lock);
#endif
return;
}
int ntfs_stat_r (struct _reent *r, const char *path, struct stat *st)
{
// Short circuit cases were we don't actually have to do anything
if (!st || !path)
return 0;
ntfs_log_trace("path %s, st %p\n", path, st);
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;
}
if(strcmp(path, ".") == 0 || strcmp(path, "..") == 0)
{
memset(st, 0, sizeof(struct stat));
st->st_mode = S_IFDIR;
return 0;
}
// Lock
ntfsLock(vd);
// Find the entry
ni = ntfsOpenEntry(vd, path);
if (!ni) {
r->_errno = errno;
ntfsUnlock(vd);
return -1;
}
// Get the entry stats
int ret = ntfsStat(vd, ni, st);
if (ret)
r->_errno = errno;
// Close the entry
ntfsCloseEntry(vd, ni);
ntfsUnlock(vd);
return 0;
}
int ntfs_chdir_r (struct _reent *r, const char *name)
{
ntfs_log_trace("name %s\n", name);
ntfs_vd *vd = NULL;
ntfs_inode *ni = NULL;
// Get the volume descriptor for this path
vd = ntfsGetVolume(name);
if (!vd) {
r->_errno = ENODEV;
return -1;
}
// Lock
ntfsLock(vd);
// Find the directory
ni = ntfsOpenEntry(vd, name);
if (!ni) {
ntfsUnlock(vd);
r->_errno = ENOENT;
return -1;
}
// Ensure that this directory is indeed a directory
if (!(ni->mrec->flags && MFT_RECORD_IS_DIRECTORY)) {
ntfsCloseEntry(vd, ni);
ntfsUnlock(vd);
r->_errno = ENOTDIR;
return -1;
}
// Close the old current directory (if any)
if (vd->cwd_ni)
ntfsCloseEntry(vd, vd->cwd_ni);
// Set the new current directory
vd->cwd_ni = ni;
// Unlock
ntfsUnlock(vd);
return 0;
}
int ntfsStat (ntfs_vd *vd, ntfs_inode *ni, struct stat *st)
{
ntfs_attr *na = NULL;
int res = 0;
// Sanity check
if (!vd) {
errno = ENODEV;
return -1;
}
// Sanity check
if (!ni) {
errno = ENOENT;
return -1;
}
// Short circuit cases were we don't actually have to do anything
if (!st)
return 0;
// Lock
ntfsLock(vd);
// Zero out the stat buffer
memset(st, 0, sizeof(struct stat));
// Is this entry a directory
if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY) {
st->st_mode = S_IFDIR | (0777 & ~vd->dmask);
st->st_nlink = 1;
// Open the directories index allocation table attribute
na = ntfs_attr_open(ni, AT_INDEX_ALLOCATION, NTFS_INDEX_I30, 4);
if (na) {
st->st_size = na->data_size;
st->st_blocks = na->allocated_size >> 9;
ntfs_attr_close(na);
}
// Else it must be a file
} else {
void ntfsCloseEntry (ntfs_vd *vd, ntfs_inode *ni)
{
// Sanity check
if (!vd) {
errno = ENODEV;
return;
}
// Lock
ntfsLock(vd);
// Sync the entry (if it is dirty)
if (NInoDirty(ni))
ntfsSync(vd, ni);
// Close the entry
ntfs_inode_close(ni);
// Unlock
ntfsUnlock(vd);
return;
}
int ntfs_ftruncate_r(struct _reent *r, int fd, off_t len)
{
ntfs_log_trace("fd %p, len %llu\n", (void *) fd, (u64) len);
ntfs_file_state* file = STATE(((intptr_t)(s64)fd));
//ntfs_file_state* file = STATE(((s64) fd));
// Sanity check
if (!file || !file->vd || !file->ni || !file->data_na) {
r->_errno = EINVAL;
return -1;
}
// Lock
ntfsLock(file->vd);
// Check that we are allowed to write to this file
if (!file->write) {
ntfsUnlock(file->vd);
r->_errno = EACCES;
return -1;
}
// For compressed files, only deleting and expanding contents are implemented
if (file->compressed &&
len > 0 &&
len < file->data_na->initialized_size) {
ntfsUnlock(file->vd);
r->_errno = ENOTSUP;
return -1;
}
// Resize the files data attribute, either by expanding or truncating
if (file->compressed && len > file->data_na->initialized_size) {
char zero = 0;
if (ntfs_attr_pwrite(file->data_na, len - 1, 1, &zero) <= 0) {
ntfsUnlock(file->vd);
r->_errno = errno;
return -1;
}
} else {
if (ntfs_attr_truncate(file->data_na, len)) {
ntfsUnlock(file->vd);
r->_errno = errno;
return -1;
}
}
// Mark the file for archiving (if we actually changed something)
if (file->len != file->data_na->data_size)
file->ni->flags |= FILE_ATTR_ARCHIVE;
// Update file times (if we actually changed something)
if (file->len != file->data_na->data_size)
ntfsUpdateTimes(file->vd, file->ni, NTFS_UPDATE_AMCTIME);
// Update the files data length
file->len = file->data_na->data_size;
// Sync the file (and its attributes) to disc
ntfsSync(file->vd, file->ni);
// Unlock
ntfsUnlock(file->vd);
return 0;
}
ntfs_inode *ntfsCreate (ntfs_vd *vd, const char *path, mode_t type, const char *target)
{
ntfs_inode *dir_ni = NULL, *ni = NULL;
char *dir = NULL;
char *name = NULL;
ntfschar *uname = NULL, *utarget = NULL;
int uname_len, utarget_len;
// Sanity check
if (!vd) {
errno = ENODEV;
return NULL;
}
// You cannot link between devices
if(target) {
if(vd != ntfsGetVolume(target)) {
errno = EXDEV;
return NULL;
}
}
// Get the actual paths of the entry
path = ntfsRealPath(path);
target = ntfsRealPath(target);
if (!path) {
errno = EINVAL;
return NULL;
}
// Lock
ntfsLock(vd);
// Get the unicode name for the entry and find its parent directory
// TODO: This looks horrible, clean it up
dir = strdup(path);
if (!dir) {
errno = EINVAL;
goto cleanup;
}
name = strrchr(dir, '/');
if (name)
name++;
else
name = dir;
uname_len = ntfsLocalToUnicode(name, &uname);
if (uname_len < 0) {
errno = EINVAL;
goto cleanup;
}
name = strrchr(dir, '/');
if(name)
{
name++;
name[0] = 0;
}
// Open the entries parent directory
dir_ni = ntfsOpenEntry(vd, dir);
if (!dir_ni) {
goto cleanup;
}
// Create the entry
switch (type) {
// Symbolic link
case S_IFLNK:
if (!target) {
errno = EINVAL;
goto cleanup;
}
utarget_len = ntfsLocalToUnicode(target, &utarget);
if (utarget_len < 0) {
errno = EINVAL;
goto cleanup;
}
ni = ntfs_create_symlink(dir_ni, 0, uname, uname_len, utarget, utarget_len);
break;
// Directory or file
case S_IFDIR:
case S_IFREG:
ni = ntfs_create(dir_ni, 0, uname, uname_len, type);
break;
}
// If the entry was created
if (ni) {
// Mark the entry for archiving
ni->flags |= FILE_ATTR_ARCHIVE;
// Mark the entry as dirty
NInoSetDirty(ni);
// Sync the entry to disc
ntfsSync(vd, ni);
// Update parent directories times
ntfsUpdateTimes(vd, dir_ni, NTFS_UPDATE_MCTIME);
}
cleanup:
if(dir_ni)
ntfsCloseEntry(vd, dir_ni);
// use free because the value was not allocated with ntfs_alloc
if(utarget)
free(utarget);
if(uname)
free(uname);
if(dir)
ntfs_free(dir);
// Unlock
ntfsUnlock(vd);
return ni;
}
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;
}
/*
// Short circuit cases where we don't actually have to do anything
if (!ptr || len <= 0) {
return 0;
}
*/
// Lock
ntfsLock(file->vd);
/*
// Check that we are allowed to read from this file
if (!file->read) {
ntfsUnlock(file->vd);
r->_errno = EACCES;
return -1;
}
// Don't read past the end of file
if (file->pos + len > file->len) {
r->_errno = EOVERFLOW;
len = file->len - file->pos;
}
*/
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) {
//r->_errno = errno;
ret_val = -14;
if (ret < 0) ret_val = ret;
goto out;
}
offset += ret;
len -= ret;
file->pos += ret;
read += ret;
}
// set file size
append_fragment(callback_data, file->len >> 9, 0, 0);
// success
ret_val = 0;
/*
// Update file times (if we actually read something)
if (read)
ntfsUpdateTimes(file->vd, file->ni, NTFS_UPDATE_ATIME);
*/
out:
// Unlock
ntfsUnlock(file->vd);
// Close the file
ntfs_close_r (&r, fd);
return ret_val;
}
int ntfsUnlink (ntfs_vd *vd, const char *path)
{
ntfs_inode *dir_ni = NULL, *ni = NULL;
char *dir = NULL;
char *name = NULL;
ntfschar *uname = NULL;
int uname_len;
int res = 0;
// Sanity check
if (!vd) {
errno = ENODEV;
return -1;
}
// Get the actual path of the entry
path = ntfsRealPath(path);
if (!path) {
errno = EINVAL;
return -1;
}
// Lock
ntfsLock(vd);
// Get the unicode name for the entry and find its parent directory
// TODO: This looks horrible
dir = strdup(path);
if (!dir) {
errno = EINVAL;
goto cleanup;
}
name = strrchr(dir, '/');
if (name)
name++;
else
name = dir;
uname_len = ntfsLocalToUnicode(name, &uname);
if (uname_len < 0) {
errno = EINVAL;
goto cleanup;
}
name = strrchr(dir, '/');
if(name)
{
name++;
name[0] = 0;
}
// Find the entry
ni = ntfsOpenEntry(vd, path);
if (!ni) {
errno = ENOENT;
res = -1;
goto cleanup;
}
// Open the entries parent directory
dir_ni = ntfsOpenEntry(vd, dir);
if (!dir_ni) {
errno = ENOENT;
res = -1;
goto cleanup;
}
// Unlink the entry from its parent
if (ntfs_delete(vd->vol, path, ni, dir_ni, uname, uname_len)) {
res = -1;
}
// Force the underlying device to sync
ntfs_device_sync(vd->dev);
// ntfs_delete() ALWAYS closes ni and dir_ni; so no need for us to anymore
dir_ni = ni = NULL;
cleanup:
if(dir_ni)
ntfsCloseEntry(vd, dir_ni);
if(ni)
ntfsCloseEntry(vd, ni);
// use free because the value was not allocated with ntfs_alloc
if(uname)
free(uname);
if(dir)
ntfs_free(dir);
// Unlock
ntfsUnlock(vd);
return 0;
}
ssize_t ntfs_write_r(struct _reent *r, int fd, const char *ptr, size_t len)
{
ntfs_log_trace("fd %p, ptr %p, len %u\n", (void *) fd, ptr, len);
ntfs_file_state* file = STATE(((intptr_t)(s64)fd));
//ntfs_file_state* file = STATE(((s64) fd));
ssize_t written = 0;
off_t old_pos = 0;
// Sanity check
if (!file || !file->vd || !file->ni || !file->data_na) {
r->_errno = EINVAL;
return -1;
}
// Short circuit cases where we don't actually have to do anything
if (!ptr || len <= 0) {
return 0;
}
// Lock
ntfsLock(file->vd);
// Check that we are allowed to write to this file
if (!file->write) {
ntfsUnlock(file->vd);
r->_errno = EACCES;
return -1;
}
// If we are in append mode, backup the current position and move to the end of the file
if (file->append) {
old_pos = file->pos;
file->pos = file->len;
}
// Write to the files data atrribute
while (len) {
ssize_t ret = ntfs_attr_pwrite(file->data_na, file->pos, len, ptr);
if (ret <= 0) {
ntfsUnlock(file->vd);
r->_errno = errno;
return -1;
}
len -= ret;
file->pos += ret;
written += ret;
}
// If we are in append mode, restore the current position to were it was prior to this write
if (file->append) {
file->pos = old_pos;
}
// Mark the file for archiving (if we actually wrote something)
if (written)
file->ni->flags |= FILE_ATTR_ARCHIVE;
// Update the files data length
file->len = file->data_na->data_size;
// Unlock
ntfsUnlock(file->vd);
return written;
}
bool ntfsSetVolumeName (const char *name, const char *volumeName)
{
ntfs_vd *vd = NULL;
ntfs_attr *na = NULL;
ntfschar *ulabel = NULL;
int ulabel_len;
// Sanity check
if (!name) {
errno = EINVAL;
return false;
}
// Get the devices volume descriptor
vd = ntfsGetVolume(name);
if (!vd) {
errno = ENODEV;
return false;
}
// Lock
ntfsLock(vd);
// Convert the new volume name to unicode
ulabel_len = ntfsLocalToUnicode(volumeName, &ulabel) * sizeof(ntfschar);
if (ulabel_len < 0) {
ntfsUnlock(vd);
errno = EINVAL;
return false;
}
// Check if the volume name attribute exists
na = ntfs_attr_open(vd->vol->vol_ni, AT_VOLUME_NAME, NULL, 0);
if (na) {
// It does, resize it to match the length of the new volume name
if (ntfs_attr_truncate(na, ulabel_len)) {
ntfs_free(ulabel);
ntfsUnlock(vd);
return false;
}
// Write the new volume name
if (ntfs_attr_pwrite(na, 0, ulabel_len, ulabel) != ulabel_len) {
ntfs_free(ulabel);
ntfsUnlock(vd);
return false;
}
} else {
// It doesn't, create it now
if (ntfs_attr_add(vd->vol->vol_ni, AT_VOLUME_NAME, NULL, 0, (u8*)ulabel, ulabel_len)) {
ntfs_free(ulabel);
ntfsUnlock(vd);
return false;
}
}
// Reset the volumes name cache (as it has now been changed)
vd->name[0] = '\0';
// Close the volume name attribute
if (na)
ntfs_attr_close(na);
// Sync the volume node
if (ntfs_inode_sync(vd->vol->vol_ni)) {
ntfs_free(ulabel);
ntfsUnlock(vd);
return false;
}
// Clean up
ntfs_free(ulabel);
// Unlock
ntfsUnlock(vd);
return true;
}
int ntfs_file_to_sectors(struct _reent *r, const char *path, uint32_t *sec_out, uint32_t *size_out, int max, int phys)
{
ntfs_file_state fileStruct;
ntfs_file_state* file = &fileStruct;
uint32_t s_count = 0;
//size_t len;
off64_t len;
// Get the volume descriptor for this path
file->vd = ntfsGetVolume(path);
if (!file->vd) {
r->_errno = ENODEV;
return -1;
}
// Lock
ntfsLock(file->vd);
// 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;
}
// 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;
}
// Set the files current position and length
file->pos = 0;
len = file->len = file->data_na->data_size;
struct ntfs_device *dev = file->vd->dev;
gekko_fd *fd = DEV_FD(dev);
while (len && s_count < max) {
//size_t ret = ntfs_attr_to_sectors(file->data_na, file->pos, len, sec_out, size_out, max, &s_count, (u32) fd->sectorSize);
off64_t ret = ntfs_attr_to_sectors(file->data_na, file->pos, len, sec_out, size_out, max, &s_count, (u32) fd->sectorSize);
if (ret <= 0 || ret > len) {
ntfsUnlock(file->vd);
r->_errno = errno;
return -1;
}
len -= ret;
file->pos += ret;
}
if (phys)
{
uint32_t i;
for (i = 0; i < s_count; i++)
{
sec_out[i] += fd->startSector;
}
}
ntfs_attr_close(file->data_na);
ntfsCloseEntry(file->vd, file->ni);
// Unlock
ntfsUnlock(file->vd);
return s_count;
}
int ntfsLink (ntfs_vd *vd, const char *old_path, const char *new_path)
{
ntfs_inode *dir_ni = NULL, *ni = NULL;
char *dir = NULL;
char *name = NULL;
ntfschar *uname = NULL;
int uname_len;
int res = 0;
// Sanity check
if (!vd) {
errno = ENODEV;
return -1;
}
// You cannot link between devices
if(vd != ntfsGetVolume(new_path)) {
errno = EXDEV;
return -1;
}
// Get the actual paths of the entry
old_path = ntfsRealPath(old_path);
new_path = ntfsRealPath(new_path);
if (!old_path || !new_path) {
errno = EINVAL;
return -1;
}
// Lock
ntfsLock(vd);
// Get the unicode name for the entry and find its parent directory
// TODO: This looks horrible, clean it up
dir = strdup(new_path);
if (!dir) {
errno = EINVAL;
goto cleanup;
}
name = strrchr(dir, '/');
if (name)
name++;
else
name = dir;
uname_len = ntfsLocalToUnicode(name, &uname);
if (uname_len < 0) {
errno = EINVAL;
goto cleanup;
}
*name = 0;
// Find the entry
ni = ntfsOpenEntry(vd, old_path);
if (!ni) {
errno = ENOENT;
res = -1;
goto cleanup;
}
// Open the entries new parent directory
dir_ni = ntfsOpenEntry(vd, dir);
if (!dir_ni) {
errno = ENOENT;
res = -1;
goto cleanup;
}
// Link the entry to its new parent
if (ntfs_link(ni, dir_ni, uname, uname_len)) {
res = -1;
goto cleanup;
}
// Update entry times
ntfsUpdateTimes(vd, dir_ni, NTFS_UPDATE_MCTIME);
// Sync the entry to disc
ntfsSync(vd, ni);
cleanup:
if(dir_ni)
ntfsCloseEntry(vd, dir_ni);
if(ni)
ntfsCloseEntry(vd, ni);
// use free because the value was not allocated with ntfs_alloc
if(uname)
free(uname);
if(dir)
ntfs_free(dir);
// Unlock
ntfsUnlock(vd);
return res;
}
DIR_ITER *ntfs_diropen_r (struct _reent *r, DIR_ITER *dirState, const char *path)
{
ntfs_log_trace("dirState %p, path %s\n", dirState, path);
ntfs_dir_state* dir = STATE(dirState);
s64 position = 0;
// Get the volume descriptor for this path
dir->vd = ntfsGetVolume(path);
if (!dir->vd) {
r->_errno = ENODEV;
return NULL;
}
// Lock
ntfsLock(dir->vd);
// Find the directory
dir->ni = ntfsOpenEntry(dir->vd, path);
if (!dir->ni) {
ntfsUnlock(dir->vd);
r->_errno = ENOENT;
return NULL;
}
// Ensure that this directory is indeed a directory
if (!(dir->ni->mrec->flags && MFT_RECORD_IS_DIRECTORY)) {
ntfsCloseEntry(dir->vd, dir->ni);
ntfsUnlock(dir->vd);
r->_errno = ENOTDIR;
return NULL;
}
// Read the directory
dir->first = dir->current = NULL;
if (ntfs_readdir(dir->ni, &position, dirState, (ntfs_filldir_t)ntfs_readdir_filler)) {
ntfsCloseDir(dir);
ntfsUnlock(dir->vd);
r->_errno = errno;
return NULL;
}
// Move to the first entry in the directory
dir->current = dir->first;
// Update directory times
ntfsUpdateTimes(dir->vd, dir->ni, NTFS_UPDATE_ATIME);
// Insert the directory into the double-linked FILO list of open directories
if (dir->vd->firstOpenDir) {
dir->nextOpenDir = dir->vd->firstOpenDir;
dir->vd->firstOpenDir->prevOpenDir = dir;
} else {
dir->nextOpenDir = NULL;
}
dir->prevOpenDir = NULL;
dir->vd->cwd_ni = dir->ni;
dir->vd->firstOpenDir = dir;
dir->vd->openDirCount++;
// Unlock
ntfsUnlock(dir->vd);
return dirState;
}
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;
}
int ntfs_statvfs_r (struct _reent *r, const char *path, struct statvfs *buf)
{
ntfs_log_trace("path %s, buf %p\n", path, buf);
ntfs_vd *vd = NULL;
s64 size;
int delta_bits;
// Get the volume descriptor for this path
vd = ntfsGetVolume(path);
if (!vd) {
r->_errno = ENODEV;
return -1;
}
// Short circuit cases were we don't actually have to do anything
if (!buf)
return 0;
// Lock
ntfsLock(vd);
// Zero out the stat buffer
memset(buf, 0, sizeof(struct statvfs));
if(ntfs_volume_get_free_space(vd->vol) < 0)
{
ntfsUnlock(vd);
return -1;
}
// File system block size
buf->f_bsize = vd->vol->cluster_size;
// Fundamental file system block size
buf->f_frsize = vd->vol->cluster_size;
// Total number of blocks on file system in units of f_frsize
buf->f_blocks = vd->vol->nr_clusters;
// Free blocks available for all and for non-privileged processes
size = MAX(vd->vol->free_clusters, 0);
buf->f_bfree = buf->f_bavail = size;
// Free inodes on the free space
delta_bits = vd->vol->cluster_size_bits - vd->vol->mft_record_size_bits;
if (delta_bits >= 0)
size <<= delta_bits;
else
size >>= -delta_bits;
// Number of inodes at this point in time
buf->f_files = (vd->vol->mftbmp_na->allocated_size << 3) + size;
// Free inodes available for all and for non-privileged processes
size += vd->vol->free_mft_records;
buf->f_ffree = buf->f_favail = MAX(size, 0);
// File system id
buf->f_fsid = vd->id;
// Bit mask of f_flag values.
buf->f_flag = (NVolReadOnly(vd->vol) ? ST_RDONLY : 0);
// Maximum length of filenames
buf->f_namemax = NTFS_MAX_NAME_LEN;
// Unlock
ntfsUnlock(vd);
return 0;
}
