Allow appending a device-path to a device-path that contains an end node
as separator. We need this feature for creating boot options specifying
kernel, initrd, and dtb.
Signed-off-by: Heinrich Schuchardt <heinrich.schucha...@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodi...@linaro.org>
---
v3:
no change
v2:
update efi_dp_concat() instead of new function efi_dp_merge()
---
cmd/eficonfig.c | 6 +++---
cmd/efidebug.c | 4 ++--
include/efi_loader.h | 2 +-
lib/efi_loader/efi_bootbin.c | 2 +-
lib/efi_loader/efi_bootmgr.c | 2 +-
lib/efi_loader/efi_boottime.c | 2 +-
lib/efi_loader/efi_device_path.c | 20 +++++++++++++-------
lib/efi_loader/efi_device_path_utilities.c | 2 +-
8 files changed, 23 insertions(+), 17 deletions(-)
diff --git a/cmd/eficonfig.c b/cmd/eficonfig.c
index 0ba92c60e03..b13d9a3d2d9 100644
--- a/cmd/eficonfig.c
+++ b/cmd/eficonfig.c
@@ -531,7 +531,7 @@ struct efi_device_path *eficonfig_create_device_path(struct
efi_device_path *dp_
dp = efi_dp_shorten(dp_volume);
if (!dp)
dp = dp_volume;
- dp = efi_dp_concat(dp, &fp->dp, false);
+ dp = efi_dp_concat(dp, &fp->dp, 0);
free(buf);
return dp;
@@ -1485,7 +1485,7 @@ static efi_status_t eficonfig_edit_boot_option(u16
*varname, struct eficonfig_bo
goto out;
}
initrd_dp = efi_dp_concat((const struct efi_device_path
*)&id_dp,
- dp, false);
+ dp, 0);
efi_free_pool(dp);
}
@@ -1496,7 +1496,7 @@ static efi_status_t eficonfig_edit_boot_option(u16
*varname, struct eficonfig_bo
}
final_dp_size = efi_dp_size(dp) + sizeof(END);
if (initrd_dp) {
- final_dp = efi_dp_concat(dp, initrd_dp, true);
+ final_dp = efi_dp_concat(dp, initrd_dp, 1);
final_dp_size += efi_dp_size(initrd_dp) + sizeof(END);
} else {
final_dp = efi_dp_dup(dp);
diff --git a/cmd/efidebug.c b/cmd/efidebug.c
index c2c525f2351..762027daf8a 100644
--- a/cmd/efidebug.c
+++ b/cmd/efidebug.c
@@ -697,7 +697,7 @@ struct efi_device_path *create_initrd_dp(const char *dev,
const char *part,
short_fp = tmp_fp;
initrd_dp = efi_dp_concat((const struct efi_device_path *)&id_dp,
- short_fp, false);
+ short_fp, 0);
out:
efi_free_pool(tmp_dp);
@@ -917,7 +917,7 @@ static int do_efi_boot_add(struct cmd_tbl *cmdtp, int flag,
goto out;
}
- final_fp = efi_dp_concat(file_path, initrd_dp, true);
+ final_fp = efi_dp_concat(file_path, initrd_dp, 1);
if (!final_fp) {
printf("Cannot create final device path\n");
r = CMD_RET_FAILURE;
diff --git a/include/efi_loader.h b/include/efi_loader.h
index 9600941aa32..ddf2e41a95c 100644
--- a/include/efi_loader.h
+++ b/include/efi_loader.h
@@ -946,7 +946,7 @@ struct efi_device_path *efi_dp_from_lo(struct
efi_load_option *lo,
const efi_guid_t *guid);
struct efi_device_path *efi_dp_concat(const struct efi_device_path *dp1,
const struct efi_device_path *dp2,
- bool split_end_node);
+ size_t split_end_node);
struct efi_device_path *search_gpt_dp_node(struct efi_device_path
*device_path);
efi_status_t efi_deserialize_load_option(struct efi_load_option *lo, u8 *data,
efi_uintn_t *size);
diff --git a/lib/efi_loader/efi_bootbin.c b/lib/efi_loader/efi_bootbin.c
index b7910f78fb6..a87006b3c0e 100644
--- a/lib/efi_loader/efi_bootbin.c
+++ b/lib/efi_loader/efi_bootbin.c
@@ -150,7 +150,7 @@ efi_status_t efi_run_image(void *source_buffer, efi_uintn_t
source_size)
msg_path = file_path;
} else {
file_path = efi_dp_concat(bootefi_device_path,
- bootefi_image_path, false);
+ bootefi_image_path, 0);
msg_path = bootefi_image_path;
log_debug("Loaded from disk\n");
}
diff --git a/lib/efi_loader/efi_bootmgr.c b/lib/efi_loader/efi_bootmgr.c
index 7da3139f917..b0bf21cf841 100644
--- a/lib/efi_loader/efi_bootmgr.c
+++ b/lib/efi_loader/efi_bootmgr.c
@@ -130,7 +130,7 @@ static efi_status_t try_load_from_file_path(efi_handle_t
*fs_handles,
if (!dp)
continue;
- dp = efi_dp_concat(dp, fp, false);
+ dp = efi_dp_concat(dp, fp, 0);
if (!dp)
continue;
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 1951291747c..630c5f52c4f 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -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_concat(device_path, file_path, false);
+ dp = efi_dp_concat(device_path, file_path, 0);
if (!dp) {
ret = EFI_OUT_OF_RESOURCES;
goto failure;
diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
index aec224d8466..c8c8d54f733 100644
--- a/lib/efi_loader/efi_device_path.c
+++ b/lib/efi_loader/efi_device_path.c
@@ -276,10 +276,11 @@ struct efi_device_path *efi_dp_dup(const struct
efi_device_path *dp)
*
* @dp1: First device path
* @dp2: Second device path
- * @split_end_node: If true the two device paths will be concatenated and
- * separated by an end node (DEVICE_PATH_SUB_TYPE_END).
- * If false the second device path will be concatenated to the
- * first one as-is.
+ * @split_end_node:
+ * * 0 to concatenate
+ * * 1 to concatenate with end node added as separator
+ * * size of dp1 excluding last end node to concatenate with end node as
+ * separator in case dp1 contains an end node
*
* Return:
* concatenated device path or NULL. Caller must free the returned value
@@ -287,7 +288,7 @@ struct efi_device_path *efi_dp_dup(const struct
efi_device_path *dp)
struct
efi_device_path *efi_dp_concat(const struct efi_device_path *dp1,
const struct efi_device_path *dp2,
- bool split_end_node)
+ size_t split_end_node)
{
struct efi_device_path *ret;
size_t end_size;
@@ -301,10 +302,15 @@ efi_device_path *efi_dp_concat(const struct
efi_device_path *dp1,
ret = efi_dp_dup(dp1);
} else {
/* both dp1 and dp2 are non-null */
- unsigned sz1 = efi_dp_size(dp1);
- unsigned sz2 = efi_dp_size(dp2);
+ size_t sz1;
+ size_t sz2 = efi_dp_size(dp2);
void *p;
+ if (split_end_node < sizeof(struct efi_device_path))
+ sz1 = efi_dp_size(dp1);
+ else
+ sz1 = split_end_node;
+
if (split_end_node)
end_size = 2 * sizeof(END);
else
diff --git a/lib/efi_loader/efi_device_path_utilities.c
b/lib/efi_loader/efi_device_path_utilities.c
index c95dbfa9b5f..ac250bbfcc9 100644
--- a/lib/efi_loader/efi_device_path_utilities.c
+++ b/lib/efi_loader/efi_device_path_utilities.c
@@ -76,7 +76,7 @@ static struct efi_device_path * EFIAPI append_device_path(
const struct efi_device_path *src2)
{
EFI_ENTRY("%pD, %pD", src1, src2);
- return EFI_EXIT(efi_dp_concat(src1, src2, false));
+ return EFI_EXIT(efi_dp_concat(src1, src2, 0));
}
/*
--
2.43.0
