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Support Apple FAT binaries on non-Apple platforms.

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* include/grub/macho.h (GRUB_MACHO_FAT_EFI_MAGIC): New define.
	* include/grub/i386/macho.h (GRUB_MACHO_CPUTYPE_IS_HOST_CURRENT):
	Likewise.
	* grub-core/loader/efi/chainloader.c (grub_cmd_chainloader): Parse
	Apple FAT binaries.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2013-01-10 12:50:01 +01:00
parent 4dedb13f51
commit 3e4f356646
4 changed files with 61 additions and 3 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2013-01-10 Vladimir Serbinenko <phcoder@gmail.com>
Support Apple FAT binaries on non-Apple platforms.
* include/grub/macho.h (GRUB_MACHO_FAT_EFI_MAGIC): New define.
* include/grub/i386/macho.h (GRUB_MACHO_CPUTYPE_IS_HOST_CURRENT):
Likewise.
* grub-core/loader/efi/chainloader.c (grub_cmd_chainloader): Parse
Apple FAT binaries.
2013-01-10 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/kern/disk.c (grub_disk_write): Fix sector number on 4K

46
grub-core/loader/efi/chainloader.c
View file

@ -35,6 +35,10 @@
#include <grub/command.h>
#include <grub/i18n.h>
#include <grub/net.h>
#if defined (__i386__) || defined (__x86_64__)
#include <grub/macho.h>
#include <grub/i386/macho.h>
#endif
GRUB_MOD_LICENSE ("GPLv3+");
@ -198,6 +202,7 @@ grub_cmd_chainloader (grub_command_t cmd __attribute__ ((unused)),
grub_efi_device_path_t *dp = 0;
grub_efi_loaded_image_t *loaded_image;
char *filename;
void *boot_image = 0;
grub_efi_handle_t dev_handle = 0;
if (argc == 0)
@ -278,7 +283,8 @@ grub_cmd_chainloader (grub_command_t cmd __attribute__ ((unused)),
goto fail;
}
if (grub_file_read (file, (void *) ((grub_addr_t) address), size) != size)
boot_image = (void *) ((grub_addr_t) address);
if (grub_file_read (file, boot_image, size) != size)
{
if (grub_errno == GRUB_ERR_NONE)
grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"),
@ -287,8 +293,44 @@ grub_cmd_chainloader (grub_command_t cmd __attribute__ ((unused)),
goto fail;
}
#if defined (__i386__) || defined (__x86_64__)
if (size >= (grub_ssize_t) sizeof (struct grub_macho_fat_header))
{
struct grub_macho_fat_header *head = boot_image;
if (head->magic
== grub_cpu_to_le32_compile_time (GRUB_MACHO_FAT_EFI_MAGIC))
{
grub_uint32_t i;
struct grub_macho_fat_arch *archs
= (struct grub_macho_fat_arch *) (head + 1);
for (i = 0; i < grub_cpu_to_le32 (head->nfat_arch); i++)
{
if (GRUB_MACHO_CPUTYPE_IS_HOST_CURRENT (archs[i].cputype))
break;
}
if (i == grub_cpu_to_le32 (head->nfat_arch))
{
grub_error (GRUB_ERR_BAD_OS, "no compatible arch found");
goto fail;
}
if (grub_cpu_to_le32 (archs[i].offset)
> ~grub_cpu_to_le32 (archs[i].size)
|| grub_cpu_to_le32 (archs[i].offset)
+ grub_cpu_to_le32 (archs[i].size)
> (grub_size_t) size)
{
grub_error (GRUB_ERR_BAD_OS, N_("premature end of file %s"),
filename);
goto fail;
}
boot_image = (char *) boot_image + grub_cpu_to_le32 (archs[i].offset);
size = grub_cpu_to_le32 (archs[i].size);
}
}
#endif
status = efi_call_6 (b->load_image, 0, grub_efi_image_handle, file_path,
(void *) ((grub_addr_t) address), size,
boot_image, size,
&image_handle);
if (status != GRUB_EFI_SUCCESS)
{

5
include/grub/i386/macho.h
View file

@ -23,6 +23,11 @@
#define GRUB_MACHO_CPUTYPE_IS_HOST32(x) ((x)==0x00000007)
#define GRUB_MACHO_CPUTYPE_IS_HOST64(x) ((x)==0x01000007)
#ifdef __x86_64__
#define GRUB_MACHO_CPUTYPE_IS_HOST_CURRENT(x) ((x)==0x01000007)
#else
#define GRUB_MACHO_CPUTYPE_IS_HOST_CURRENT(x) ((x)==0x00000007)
#endif
struct grub_macho_thread32
{

1
include/grub/macho.h
View file

@ -27,6 +27,7 @@ struct grub_macho_fat_header
grub_uint32_t nfat_arch;
} __attribute__ ((packed));
#define GRUB_MACHO_FAT_MAGIC 0xcafebabe
#define GRUB_MACHO_FAT_EFI_MAGIC 0x0ef1fab9
typedef grub_uint32_t grub_macho_cpu_type_t;
typedef grub_uint32_t grub_macho_cpu_subtype_t;