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- /* host.c - Dummy disk driver to provide access to the hosts filesystem */
- /*
- * GRUB -- GRand Unified Bootloader
- * Copyright (C) 2007 Free Software Foundation, Inc.
- *
- * GRUB is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * GRUB is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
- */
- /* When using the disk, make a reference to this module. Otherwise
- the user will end up with a useless module :-). */
- #include <grub/dl.h>
- #include <grub/disk.h>
- #include <grub/misc.h>
- int grub_disk_host_i_want_a_reference;
- static int
- grub_host_iterate (int (*hook) (const char *name, void *closure),
- void *closure)
- {
- if (hook ("host", closure))
- return 1;
- return 0;
- }
- static grub_err_t
- grub_host_open (const char *name, grub_disk_t disk)
- {
- if (grub_strcmp (name, "host"))
- return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "not a host disk");
- disk->total_sectors = 0;
- disk->id = (unsigned long) "host";
- disk->has_partitions = 0;
- disk->data = 0;
- return GRUB_ERR_NONE;
- }
- static void
- grub_host_close (grub_disk_t disk __attribute((unused)))
- {
- }
- static grub_err_t
- grub_host_read (grub_disk_t disk __attribute((unused)),
- grub_disk_addr_t sector __attribute((unused)),
- grub_size_t size __attribute((unused)),
- char *buf __attribute((unused)))
- {
- return GRUB_ERR_OUT_OF_RANGE;
- }
- static grub_err_t
- grub_host_write (grub_disk_t disk __attribute ((unused)),
- grub_disk_addr_t sector __attribute ((unused)),
- grub_size_t size __attribute ((unused)),
- const char *buf __attribute ((unused)))
- {
- return GRUB_ERR_OUT_OF_RANGE;
- }
- static struct grub_disk_dev grub_host_dev =
- {
- /* The only important line in this file :-) */
- .name = "host",
- .id = GRUB_DISK_DEVICE_HOST_ID,
- .iterate = grub_host_iterate,
- .open = grub_host_open,
- .close = grub_host_close,
- .read = grub_host_read,
- .write = grub_host_write,
- .next = 0
- };
- GRUB_MOD_INIT(host)
- {
- grub_disk_dev_register (&grub_host_dev);
- }
- GRUB_MOD_FINI(host)
- {
- grub_disk_dev_unregister (&grub_host_dev);
- }
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