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2008-01-21 Robert Millan <rmh@aybabtu.com>

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* disk/memdisk.c (memdisk_size): New variable.
        (grub_memdisk_open): Replace grub_arch_memdisk_size() call with
        `memdisk_size'.
        (grub_memdisk_init): Initialize `memdisk_size'.  Reallocate memdisk
        image to dynamic memory.
        (grub_memdisk_fini): Replace grub_arch_memdisk_size() call with
        `memdisk_size'.  Free memdisk block.
This commit is contained in:
robertmh 2008-01-21 14:37:25 +00:00
parent 1a8b05264d
commit f970b55e43
2 changed files with 28 additions and 5 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2008-01-21 Robert Millan <rmh@aybabtu.com>
* disk/memdisk.c (memdisk_size): New variable.
(grub_memdisk_open): Replace grub_arch_memdisk_size() call with
`memdisk_size'.
(grub_memdisk_init): Initialize `memdisk_size'. Reallocate memdisk
image to dynamic memory.
(grub_memdisk_fini): Replace grub_arch_memdisk_size() call with
`memdisk_size'. Free memdisk block.
2008-01-21 Robert Millan <rmh@aybabtu.com>
Fix detection of very small filesystems (like tar).

23
disk/memdisk.c
View file

@ -1,7 +1,7 @@
/* memdisk.c - Access embedded memory disk. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2007 Free Software Foundation, Inc.
* Copyright (C) 2007,2008 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
@ -25,6 +25,7 @@
#include <grub/types.h>
static grub_addr_t memdisk_addr;
static grub_off_t memdisk_size = 0;
static int
grub_memdisk_iterate (int (*hook) (const char *name))
@ -38,7 +39,7 @@ grub_memdisk_open (const char *name, grub_disk_t disk)
if (grub_strcmp (name, "memdisk"))
return grub_error (GRUB_ERR_UNKNOWN_DEVICE, "not a memdisk");
disk->total_sectors = grub_arch_memdisk_size () / GRUB_DISK_SECTOR_SIZE;
disk->total_sectors = memdisk_size / GRUB_DISK_SECTOR_SIZE;
disk->id = (int) 'mdsk';
disk->has_partitions = 0;
@ -80,15 +81,27 @@ static struct grub_disk_dev grub_memdisk_dev =
GRUB_MOD_INIT(memdisk)
{
if (! grub_arch_memdisk_size ())
grub_addr_t memdisk_orig_addr;
memdisk_size = grub_arch_memdisk_size ();
if (! memdisk_size)
return;
memdisk_addr = grub_arch_memdisk_addr ();
memdisk_orig_addr = grub_arch_memdisk_addr ();
grub_dprintf ("memdisk", "Found memdisk image at %p\n", memdisk_orig_addr);
memdisk_addr = grub_malloc (memdisk_size);
grub_dprintf ("memdisk", "Copying memdisk image to dynamic memory\n");
grub_memmove (memdisk_addr, memdisk_orig_addr, memdisk_size);
grub_disk_dev_register (&grub_memdisk_dev);
}
GRUB_MOD_FINI(memdisk)
{
if (! grub_arch_memdisk_size ())
if (! memdisk_size)
return;
grub_free (memdisk_addr);
grub_disk_dev_unregister (&grub_memdisk_dev);
}