[PATCH 2/2] efi_loader: create boot options without file path

[Heinrich Schuchardt]

Allow creating boot options without file path, e.g.

    efidebug boot add -b 0001 'short dev only' host 0:1 ''
    efidebug boot add -B 0002 'long dev only' host 0:1 ''

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
 lib/efi_loader/efi_device_path.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
index 50a988c561..c511abcd5e 100644
--- a/lib/efi_loader/efi_device_path.c
+++ b/lib/efi_loader/efi_device_path.c
@@ -1002,12 +1002,14 @@ struct efi_device_path *efi_dp_from_file(struct blk_desc *desc, int part,
 		buf = dp_part_fill(buf, desc, part);

 	/* add file-path: */
-	fp = buf;
-	fp->dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE;
-	fp->dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH;
-	fp->dp.length = (u16)fpsize;
-	path_to_uefi(fp->str, path);
-	buf += fpsize;
+	if (*path) {
+		fp = buf;
+		fp->dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE;
+		fp->dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH;
+		fp->dp.length = (u16)fpsize;
+		path_to_uefi(fp->str, path);
+		buf += fpsize;
+	}

 	*((struct efi_device_path *)buf) = END;

--
2.36.1