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// SPDX-License-Identifier: BSD-2-Clause-Patent
/*
* Copyright 2012 <James.Bottomley@HansenPartnership.com>
* Code Copyright 2012 Red Hat, Inc <mjg@redhat.com>
*/
#include "shim.h"
EFI_STATUS
generate_path(CHAR16* name, EFI_LOADED_IMAGE *li, EFI_DEVICE_PATH **path, CHAR16 **PathName)
{
unsigned int pathlen;
EFI_STATUS efi_status = EFI_SUCCESS;
CHAR16 *devpathstr = DevicePathToStr(li->FilePath),
*found = NULL;
unsigned int i;
for (i = 0; i < StrLen(devpathstr); i++) {
if (devpathstr[i] == '/')
devpathstr[i] = '\\';
if (devpathstr[i] == '\\')
found = &devpathstr[i];
}
if (!found) {
pathlen = 0;
} else {
while (*(found - 1) == '\\')
--found;
*found = '\0';
pathlen = StrLen(devpathstr);
}
if (name[0] != '\\')
pathlen++;
*PathName = AllocatePool((pathlen + 1 + StrLen(name))*sizeof(CHAR16));
if (!*PathName) {
console_print(L"Failed to allocate path buffer\n");
efi_status = EFI_OUT_OF_RESOURCES;
goto error;
}
StrCpy(*PathName, devpathstr);
if (name[0] != '\\')
StrCat(*PathName, L"\\");
StrCat(*PathName, name);
*path = FileDevicePath(li->DeviceHandle, *PathName);
error:
FreePool(devpathstr);
return efi_status;
}
EFI_STATUS
execute(EFI_HANDLE image, CHAR16 *name)
{
EFI_STATUS efi_status;
EFI_HANDLE h;
EFI_LOADED_IMAGE *li;
EFI_DEVICE_PATH *devpath;
CHAR16 *PathName;
efi_status = BS->HandleProtocol(image, &IMAGE_PROTOCOL,
(void **) &li);
if (EFI_ERROR(efi_status))
return efi_status;
efi_status = generate_path(name, li, &devpath, &PathName);
if (EFI_ERROR(efi_status))
return efi_status;
efi_status = BS->LoadImage(FALSE, image, devpath, NULL, 0, &h);
if (EFI_ERROR(efi_status))
goto out;
efi_status = BS->StartImage(h, NULL, NULL);
BS->UnloadImage(h);
out:
FreePool(PathName);
FreePool(devpath);
return efi_status;
}
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