nbd: add set flags ioctl

[karo-tx-linux.git] / drivers / block / nbd.c

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 0c03411c59eb8cba0f744e72aed93342dc9cace8..68fe7514413d584883e145a486ac40ad1f7aa881 100644 (file)
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -78,6 +78,8 @@ static const char *ioctl_cmd_to_ascii(int cmd)
        case NBD_SET_SOCK: return "set-sock";
        case NBD_SET_BLKSIZE: return "set-blksize";
        case NBD_SET_SIZE: return "set-size";
+       case NBD_SET_TIMEOUT: return "set-timeout";
+       case NBD_SET_FLAGS: return "set-flags";
        case NBD_DO_IT: return "do-it";
        case NBD_CLEAR_SOCK: return "clear-sock";
        case NBD_CLEAR_QUE: return "clear-que";
@@ -468,7 +470,7 @@ static void nbd_handle_req(struct nbd_device *nbd, struct request *req)
        nbd_cmd(req) = NBD_CMD_READ;
        if (rq_data_dir(req) == WRITE) {
                nbd_cmd(req) = NBD_CMD_WRITE;
-               if (nbd->flags & NBD_READ_ONLY) {
+               if (nbd->flags & NBD_FLAG_READ_ONLY) {
                        dev_err(disk_to_dev(nbd->disk),
                                "Write on read-only\n");
                        goto error_out;
@@ -651,6 +653,10 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
                nbd->xmit_timeout = arg * HZ;
                return 0;
 
+       case NBD_SET_FLAGS:
+               nbd->flags = arg;
+               return 0;
+
        case NBD_SET_SIZE_BLOCKS:
                nbd->bytesize = ((u64) arg) * nbd->blksize;
                bdev->bd_inode->i_size = nbd->bytesize;