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Rev 3282 Rev 3307
Line 704... Line 704...
704 
void fat_lookup(ipc_callid_t rid, ipc_call_t *request)
 704 
void fat_lookup(ipc_callid_t rid, ipc_call_t *request)
705 
{
 705 
{
706 
    libfs_lookup(&fat_libfs_ops, fat_reg.fs_handle, rid, request);
 706 
    libfs_lookup(&fat_libfs_ops, fat_reg.fs_handle, rid, request);
707 
}
 707 
}
708 
 
 708 
 
- 
 
 709 
void fat_read(ipc_callid_t rid, ipc_call_t *request)
- 
 
 710 
{
- 
 
 711 
    dev_handle_t dev_handle = (dev_handle_t)IPC_GET_ARG1(*request);
- 
 
 712 
    fs_index_t index = (fs_index_t)IPC_GET_ARG2(*request);
- 
 
 713 
    off_t pos = (off_t)IPC_GET_ARG3(*request);
- 
 
 714 
    fat_node_t *nodep = (fat_node_t *)fat_node_get(dev_handle, index);
- 
 
 715 
    if (!nodep) {
- 
 
 716 
        ipc_answer_0(rid, ENOENT);
- 
 
 717 
        return;
- 
 
 718 
    }
- 
 
 719 
 
- 
 
 720 
    ipc_callid_t callid;
- 
 
 721 
    size_t len;
- 
 
 722 
    if (!ipc_data_write_receive(&callid, &len)) {
- 
 
 723 
        fat_node_put(nodep);
- 
 
 724 
        ipc_answer_0(callid, EINVAL);
- 
 
 725 
        ipc_answer_0(rid, EINVAL);
- 
 
 726 
        return;
- 
 
 727 
    }
- 
 
 728 
 
- 
 
 729 
    if (nodep->type == FAT_FILE) {
- 
 
 730 
        /* TODO */
- 
 
 731 
        fat_node_put(nodep);
- 
 
 732 
        ipc_answer_0(callid, ENOTSUP);
- 
 
 733 
        ipc_answer_0(rid, ENOTSUP);
- 
 
 734 
        return;
- 
 
 735 
    } else {
- 
 
 736 
        assert(nodep->type == FAT_DIRECTORY);
- 
 
 737 
        /* TODO */
- 
 
 738 
        fat_node_put(nodep);
- 
 
 739 
        ipc_answer_0(callid, ENOTSUP);
- 
 
 740 
        ipc_answer_0(rid, ENOTSUP);
- 
 
 741 
        return;
- 
 
 742 
    }
- 
 
 743 
 
- 
 
 744 
    fat_node_put(nodep);
- 
 
 745 
}
- 
 
 746 
 
709 
/**
 747 
/**
710 
 * @}
 748 
 * @}
711 
 */
 749 
 */