grub/kern/device.c
okuji 6a85ce7953 2005-08-20 Yoshinori K. Okuji <okuji@enbug.org>
* partmap/pc.c (pc_partition_map_iterate): Include the value of an
        invalid magic in thre error.

        * commands/search.c: New file.

        * util/grub-emu.c (main): Call grub_search_init and
        grub_search_fini.

        * kern/rescue.c (grub_rescue_print_disks): Removed.
        (grub_rescue_print_devices): New function.
        (grub_rescue_cmd_ls): Use grub_device_iterate with
        grub_rescue_print_devices instead of grub_disk_dev_iterate with
        grub_rescue_print_disks.

        * kern/partition.c (grub_partition_iterate): Return the result of
        PARTMAP->ITERATE instead of GRUB_ERRNO.

        * kern/device.c: Include grub/partition.h.
        (grub_device_iterate): New function.

        * include/grub/partition.h (grub_partition_iterate): Return int
        instead of grub_err_t.

        * include/grub/normal.h [GRUB_UTIL] (grub_search_init): New
        prototype.
        [GRUB_UTIL] (grub_search_fini): Likewise.

        * include/grub/device.h (grub_device_iterate): New prototype.

        * conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Added
        commands/search.c.
        (pkgdata_MODULES): Added search.mod.
        (search_mod_SOURCES): New variable.
        (search_mod_CFLAGS): Likewise.

        * conf/i386-pc.rmk (grub_emu_SOURCES): Added commands/search.c.
        (pkgdata_MODULES): Added search.mod.
        (search_mod_SOURCES): New variable.
        (search_mod_CFLAGS): Likewise.

        * commands/ls.c (grub_ls_list_disks): Renamed to ...
        (grub_ls_list_devices): ... this, and use grub_device_iterate.
        All callers changed.

        * DISTLIST: Added commands/search.c.
2005-08-20 07:49:02 +00:00

140 lines
3.1 KiB
C

/* device.c - device manager */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2005 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 2 of the License, or
* (at your option) any later version.
*
* This program 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/device.h>
#include <grub/disk.h>
#include <grub/net.h>
#include <grub/fs.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/env.h>
#include <grub/partition.h>
grub_device_t
grub_device_open (const char *name)
{
grub_disk_t disk = 0;
grub_device_t dev = 0;
if (! name)
{
name = grub_env_get ("root");
if (*name == '\0')
{
grub_error (GRUB_ERR_BAD_DEVICE, "no device is set");
goto fail;
}
}
dev = grub_malloc (sizeof (*dev));
if (! dev)
goto fail;
/* Try to open a disk. */
disk = grub_disk_open (name);
if (! disk)
{
grub_error (GRUB_ERR_BAD_DEVICE, "unknown device");
goto fail;
}
dev->disk = disk;
dev->net = 0; /* FIXME */
return dev;
fail:
if (disk)
grub_disk_close (disk);
grub_free (dev);
return 0;
}
grub_err_t
grub_device_close (grub_device_t device)
{
if (device->disk)
grub_disk_close (device->disk);
grub_free (device);
return grub_errno;
}
int
grub_device_iterate (int (*hook) (const char *name))
{
auto int iterate_disk (const char *disk_name);
auto int iterate_partition (grub_disk_t disk,
const grub_partition_t partition);
int iterate_disk (const char *disk_name)
{
grub_device_t dev;
if (hook (disk_name))
return 1;
dev = grub_device_open (disk_name);
if (! dev)
return 1;
if (dev->disk && dev->disk->has_partitions)
if (grub_partition_iterate (dev->disk, iterate_partition))
{
grub_device_close (dev);
return 1;
}
grub_device_close (dev);
return 0;
}
int iterate_partition (grub_disk_t disk, const grub_partition_t partition)
{
char *partition_name;
char *device_name;
int ret;
partition_name = grub_partition_get_name (partition);
if (! partition_name)
return 1;
device_name = grub_malloc (grub_strlen (disk->name) + 1
+ grub_strlen (partition_name) + 1);
if (! device_name)
{
grub_free (partition_name);
return 1;
}
grub_sprintf (device_name, "%s,%s", disk->name, partition_name);
grub_free (partition_name);
ret = hook (device_name);
grub_free (device_name);
return ret;
}
/* Only disk devices are supported at the moment. */
return grub_disk_dev_iterate (iterate_disk);
}