efi_loader: efi_dp_from_lo() don't copy GUID

Instead of copying a GUID and then using a pointer to the copy for calling
guidcmp(), just pass the pointer to the orginal GUID.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/cmd/efidebug.c b/cmd/efidebug.c
index 67ab06a..5235dbb 100644 (file)
--- a/cmd/efidebug.c
+++ b/cmd/efidebug.c
@@ -1169,7 +1169,7 @@ static void show_efi_boot_opt_data(u16 *varname16, void *data, size_t *size)
        printf("  file_path: %ls\n", dp_str);
        efi_free_pool(dp_str);
 
-       initrd_path = efi_dp_from_lo(&lo, &initrd_dp_size, lf2_initrd_guid);
+       initrd_path = efi_dp_from_lo(&lo, &initrd_dp_size, &lf2_initrd_guid);
        if (initrd_path) {
                dp_str = efi_dp_str(initrd_path);
                printf("  initrd_path: %ls\n", dp_str);

diff --git a/include/efi_loader.h b/include/efi_loader.h
index 5cdc723..6e806f9 100644 (file)
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -842,7 +842,8 @@ struct efi_load_option {
 };
 
 struct efi_device_path *efi_dp_from_lo(struct efi_load_option *lo,
-                                      efi_uintn_t *size, efi_guid_t guid);
+                                      efi_uintn_t *size,
+                                      const efi_guid_t *guid);
 struct efi_device_path *efi_dp_concat(const struct efi_device_path *dp1,
                                      const struct efi_device_path *dp2);
 efi_status_t efi_deserialize_load_option(struct efi_load_option *lo, u8 *data,

diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
index a09090a..a588712 100644 (file)
--- a/lib/efi_loader/efi_device_path.c
+++ b/lib/efi_loader/efi_device_path.c
@@ -1218,7 +1218,8 @@ ssize_t efi_dp_check_length(const struct efi_device_path *dp,
  */
 struct
 efi_device_path *efi_dp_from_lo(struct efi_load_option *lo,
-                               efi_uintn_t *size, efi_guid_t guid)
+                               efi_uintn_t *size,
+                               const efi_guid_t *guid)
 {
        struct efi_device_path *fp = lo->file_path;
        struct efi_device_path_vendor *vendor;
@@ -1233,7 +1234,7 @@ efi_device_path *efi_dp_from_lo(struct efi_load_option *lo,
                        continue;
 
                vendor = (struct efi_device_path_vendor *)fp;
-               if (!guidcmp(&vendor->guid, &guid))
+               if (!guidcmp(&vendor->guid, guid))
                        return efi_dp_dup(fp);
        }
        log_debug("VenMedia(%pUl) not found in %ls\n", &guid, lo->label);

diff --git a/lib/efi_loader/efi_helper.c b/lib/efi_loader/efi_helper.c
index d03a736..4c5b7cd 100644 (file)
--- a/lib/efi_loader/efi_helper.c
+++ b/lib/efi_loader/efi_helper.c
@@ -83,7 +83,7 @@ struct efi_device_path *efi_get_dp_from_boot(const efi_guid_t guid)
        if (ret != EFI_SUCCESS)
                goto out;
 
-       tmp = efi_dp_from_lo(&lo, &size, guid);
+       tmp = efi_dp_from_lo(&lo, &size, &guid);
        if (!tmp)
                goto out;