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efidisk: move device path helpers in core for efinet

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This commit is contained in:
Andrei Borzenkov 2015-05-07 20:37:16 +03:00
parent 16a7e723ea
commit 7b386b7031
3 changed files with 55 additions and 51 deletions
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41
grub-core/kern/efi/efi.c
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@ -394,6 +394,47 @@ grub_efi_get_device_path (grub_efi_handle_t handle)
GRUB_EFI_OPEN_PROTOCOL_GET_PROTOCOL);
}
/* Return the device path node right before the end node. */
grub_efi_device_path_t *
grub_efi_find_last_device_path (const grub_efi_device_path_t *dp)
{
grub_efi_device_path_t *next, *p;
if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (dp))
return 0;
for (p = (grub_efi_device_path_t *) dp, next = GRUB_EFI_NEXT_DEVICE_PATH (p);
! GRUB_EFI_END_ENTIRE_DEVICE_PATH (next);
p = next, next = GRUB_EFI_NEXT_DEVICE_PATH (next))
;
return p;
}
/* Duplicate a device path. */
grub_efi_device_path_t *
grub_efi_duplicate_device_path (const grub_efi_device_path_t *dp)
{
grub_efi_device_path_t *p;
grub_size_t total_size = 0;
for (p = (grub_efi_device_path_t *) dp;
;
p = GRUB_EFI_NEXT_DEVICE_PATH (p))
{
total_size += GRUB_EFI_DEVICE_PATH_LENGTH (p);
if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (p))
break;
}
p = grub_malloc (total_size);
if (! p)
return 0;
grub_memcpy (p, dp, total_size);
return p;
}
static void
dump_vendor_path (const char *type, grub_efi_vendor_device_path_t *vendor)
{