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loader/efi/chainloader: Use shim loader image handle where available

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Not reusing these handles will result in image measurements showing up
twice in the event log.

Signed-off-by: Mate Kukri <mate.kukri@canonical.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Mate Kukri 2025-07-08 21:21:16 +01:00 committed by Daniel Kiper
parent e31d0cd7fb
commit 1b9a84e63b
1 changed files with 13 additions and 8 deletions
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21
grub-core/loader/efi/chainloader.c
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@ -33,6 +33,7 @@
#include <grub/efi/efi.h>
#include <grub/efi/disk.h>
#include <grub/efi/memory.h>
#include <grub/efi/sb.h>
#include <grub/command.h>
#include <grub/i18n.h>
#include <grub/net.h>
@ -337,16 +338,20 @@ grub_cmd_chainloader (grub_command_t cmd __attribute__ ((unused)),
}
#endif
status = grub_efi_load_image (0, grub_efi_image_handle, file_path,
boot_image, size, &image_handle);
if (status != GRUB_EFI_SUCCESS)
image_handle = grub_efi_get_last_verified_image_handle ();
if (image_handle == NULL)
{
if (status == GRUB_EFI_OUT_OF_RESOURCES)
grub_error (GRUB_ERR_OUT_OF_MEMORY, "out of resources");
else
grub_error (GRUB_ERR_BAD_OS, "cannot load image");
status = grub_efi_load_image (0, grub_efi_image_handle, file_path,
boot_image, size, &image_handle);
if (status != GRUB_EFI_SUCCESS)
{
if (status == GRUB_EFI_OUT_OF_RESOURCES)
grub_error (GRUB_ERR_OUT_OF_MEMORY, "out of resources");
else
grub_error (GRUB_ERR_BAD_OS, "cannot load image");
goto fail;
goto fail;
}
}
/* LoadImage does not set a device handler when the image is