// reiserfs_read
static status_t
reiserfs_read(fs_volume *fs, fs_vnode *_node, void *cookie, off_t pos,
void *buffer, size_t *bufferSize)
{
TOUCH(fs);
// FUNCTION_START();
// Volume *volume = (Volume*)fs->private_volume;
VNode *node = (VNode*)_node->private_node;
FUNCTION(("((%Ld: %lu, %lu), %Ld, %p, %lu)\n", node->GetID(),
node->GetDirID(), node->GetObjectID(), pos, buffer,
*bufferSize));
status_t error = B_OK;
// don't read anything but files
if (!node->IsFile()) {
if (node->IsDir())
error = B_IS_A_DIRECTORY;
else
error = B_BAD_VALUE;
}
// read
StreamReader *reader = (StreamReader*)cookie;
if (error == B_OK) {
error = reader->Resume();
if (error == B_OK) {
error = reader->ReadAt(pos, buffer, *bufferSize, bufferSize);
reader->Suspend();
}
}
RETURN_ERROR(error);
}
// reiserfs_lookup
static status_t
reiserfs_lookup(fs_volume* fs, fs_vnode* _dir, const char *entryName,
ino_t *vnid)
{
// FUNCTION_START();
Volume *volume = (Volume*)fs->private_volume;
VNode *dir = (VNode*)_dir->private_node;
FUNCTION(("dir: (%Ld: %lu, %lu), entry: `%s'\n", dir->GetID(), dir->GetDirID(),
dir->GetObjectID(), entryName));
status_t error = B_OK;
VNode *entryNode = NULL;
// check for non-directories
if (!dir->IsDir()) {
error = B_ENTRY_NOT_FOUND;
// special entries: "." and ".."
} else if (!strcmp(entryName, ".")) {
*vnid = dir->GetID();
if (volume->GetVNode(*vnid, &entryNode) != B_OK)
error = B_BAD_VALUE;
} else if (!strcmp(entryName, "..")) {
*vnid = dir->GetParentID();
if (volume->GetVNode(*vnid, &entryNode) != B_OK)
error = B_BAD_VALUE;
// ordinary entries
} else {
// find the entry
VNode foundNode;
error = volume->FindDirEntry(dir, entryName, &foundNode, true);
// hide non-file/dir/symlink entries, if the user desires that, and
// those entries explicitly set to hidden
if (error == B_OK
&& ((foundNode.IsEsoteric() && volume->GetHideEsoteric())
|| volume->IsNegativeEntry(foundNode.GetID()))) {
error = B_ENTRY_NOT_FOUND;
}
if (error == B_OK) {
*vnid = foundNode.GetID();
error = volume->GetVNode(*vnid, &entryNode);
}
}
// add to the entry cache
if (error == B_OK) {
entry_cache_add(volume->GetID(), dir->GetID(), entryName,
*vnid);
}
RETURN_ERROR(error);
}
// reiserfs_open_dir
static status_t
reiserfs_open_dir(fs_volume *fs, fs_vnode *_node, void **cookie)
{
// FUNCTION_START();
Volume *volume = (Volume*)fs->private_volume;
VNode *node = (VNode*)_node->private_node;
FUNCTION(("node: (%Ld: %lu, %lu)\n", node->GetID(), node->GetDirID(),
node->GetObjectID()));
status_t error = (node->IsDir() ? B_OK : B_NOT_A_DIRECTORY);
if (error == B_OK) {
DirectoryCookie *iterator = new(nothrow) DirectoryCookie(
volume->GetTree(), node->GetDirID(), node->GetObjectID());
if (iterator) {
error = iterator->Suspend();
if (error == B_OK)
*cookie = iterator;
else
delete iterator;
} else
error = B_NO_MEMORY;
}
FUNCTION_END();
RETURN_ERROR(error);
}