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efi_loader: Clean up efi_dp_append and efi_dp_concat

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Looking back at the initrd storing functionality, we introduced three
functions, efi_dp_append_or_concatenate(), efi_dp_append/concat(). In
hindsight we could have simplified that by a lot. First of all none of
the functions append anything. They all allocate a new device path and
concatenate the contents of two device paths in one. A boolean parameter
controls the final device path -- if that's true an end node is injected
between the two device paths.

So let's rewrite this and make it a bit easier to read. Get rid of
efi_dp_append(), efi_dp_concat() and rename
efi_dp_append_or_concatenate() to efi_dp_concat(). This is far more
intuitive and the only adjustment that is needed is an extra boolean
argument on all callsites.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Ilias Apalodimas
2024-01-08 10:55:33 +02:00
committed by Heinrich Schuchardt
parent 753f76e417
commit f19171c919
7 changed files with 35 additions and 63 deletions
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2
lib/efi_loader/efi_boottime.c
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@@ -1816,7 +1816,7 @@ efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
if (device_path) {
info->device_handle = efi_dp_find_obj(device_path, NULL, NULL);
dp = efi_dp_append(device_path, file_path);
dp = efi_dp_concat(device_path, file_path, false);
if (!dp) {
ret = EFI_OUT_OF_RESOURCES;
goto failure;