void ext2DeinitVolume (ext2_vd *vd)
{
// Sanity check
if (!vd) {
errno = ENODEV;
return;
}
// Lock
ext2Lock(vd);
// Close any directories which are still open (lazy programmers!)
ext2_dir_state *nextDir = vd->firstOpenDir;
while (nextDir) {
ext2CloseDir(nextDir);
nextDir = nextDir->nextOpenDir;
}
// Close any files which are still open (lazy programmers!)
ext2_file_state *nextFile = vd->firstOpenFile;
while (nextFile) {
ext2CloseFile(nextFile);
nextFile = nextFile->nextOpenFile;
}
// Reset open directory and file stats
vd->openDirCount = 0;
vd->openFileCount = 0;
vd->firstOpenDir = NULL;
vd->firstOpenFile = NULL;
// Force the underlying device to sync
ext2Sync(vd, NULL);
// Unlock
ext2Unlock(vd);
// Deinitialise the volume lock
//LWP_MutexDestroy(vd->lock);
sys_lwmutex_destroy(&vd->lock);
}
int ext2_dirclose_r (struct _reent *r, DIR_ITER *dirState)
{
ext2_log_trace("dirState %p\n", dirState);
if(!dirState)
{
r->_errno = EINVAL;
return -1;
}
ext2_dir_state* dir = STATE(dirState);
// Sanity check
if (!dir || !dir->vd) {
r->_errno = EBADF;
return -1;
}
// Lock
ext2Lock(dir->vd);
// Close the directory
ext2CloseDir(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
ext2Unlock(dir->vd);
return 0;
}
DIR_ITER *ext2_diropen_r (struct _reent *r, DIR_ITER *dirState, const char *path)
{
ext2_log_trace("dirState %p, path %s\n", dirState, path);
if(!dirState)
{
r->_errno = EINVAL;
return NULL;
}
ext2_dir_state* dir = STATE(dirState);
if(!dir)
{
r->_errno = EINVAL;
return NULL;
}
// Get the volume descriptor for this path
dir->vd = ext2GetVolume(path);
if (!dir->vd) {
r->_errno = ENODEV;
return NULL;
}
// Lock
ext2Lock(dir->vd);
// Find the directory
dir->ni = ext2OpenEntry(dir->vd, path);
if (!dir->ni) {
ext2Unlock(dir->vd);
r->_errno = ENOENT;
return NULL;
}
// Ensure that this directory is indeed a directory
if (!LINUX_S_ISDIR(dir->ni->ni.i_mode)) {
ext2CloseEntry(dir->vd, dir->ni);
ext2Unlock(dir->vd);
r->_errno = ENOTDIR;
return NULL;
}
// Read the directory
dir->first = dir->current = NULL;
if (ext2fs_dir_iterate(dir->vd->fs, dir->ni->ino, 0, 0, DirIterateCallback, dirState) != EXT2_ET_OK) {
ext2CloseDir(dir);
ext2Unlock(dir->vd);
r->_errno = errno;
return NULL;
}
// Move to the first entry in the directory
dir->current = dir->first;
// Update directory times
ext2UpdateTimes(dir->vd, dir->ni, EXT2_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
ext2Unlock(dir->vd);
return dirState;
}
