status_t mount(const char device[], const char dir[], const char type[], int,
char*)
{
int error;
int devfd = -1;
if (strlen(device) > 0) {
devfd = open(device, 0);
if (devfd < 0) {
printf("mount: error opening device\n");
return E_NO_SUCH_FILE;
}
}
VNode *node;
error = FileSystem::WalkPath(dir, strlen(dir), &node);
if (error < 0) {
printf("mount: mount point does not exist\n");
close_handle(devfd);
return error;
}
if (node->GetCoveredBy() != 0) {
// Attempting to re-mount an already mounted directory
printf("mount: filesystem already mounted at this point\n");
node->ReleaseRef();
close_handle(devfd);
return E_NOT_ALLOWED;
}
FileSystem *fs;
error = FileSystem::InstantiateFsType(type, devfd, &fs);
if (error < 0) {
node->ReleaseRef();
close_handle(devfd);
return error;
}
node->CoverWith(fs);
fs->Cover(node);
return 0;
}
