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sd-stub: if we are http booted, query source URL and write to EFI variable

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This way userspace can read the field, and use it to retrieve more
resources from the same place.
This commit is contained in:
Lennart Poettering
2025-02-21 10:03:32 +01:00
parent c88fdb1e56
commit e15d18b4c6
12 changed files with 106 additions and 7 deletions
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src/bootctl/bootctl-status.c
+19 -2
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@@ -390,12 +390,15 @@ int verb_status(int argc, char *argv[], void *userdata) {
{ EFI_LOADER_FEATURE_RETAIN_SHIM, "Retain SHIM protocols" },
{ EFI_LOADER_FEATURE_MENU_DISABLE, "Menu can be disabled" },
{ EFI_LOADER_FEATURE_MULTI_PROFILE_UKI, "Multi-Profile UKIs are supported" },
{ EFI_LOADER_FEATURE_REPORT_URL, "Loader reports network boot URL" },
};
static const struct {
uint64_t flag;
const char *name;
} stub_flags[] = {
{ EFI_STUB_FEATURE_REPORT_BOOT_PARTITION, "Stub sets loader partition information" },
{ EFI_STUB_FEATURE_REPORT_BOOT_PARTITION, "Stub reports loader partition information" },
{ EFI_STUB_FEATURE_REPORT_STUB_PARTITION, "Stub reports stub partition information" },
{ EFI_STUB_FEATURE_REPORT_URL, "Stub reports network boot URL" },
{ EFI_STUB_FEATURE_PICK_UP_CREDENTIALS, "Picks up credentials from boot partition" },
{ EFI_STUB_FEATURE_PICK_UP_SYSEXTS, "Picks up system extension images from boot partition" },
{ EFI_STUB_FEATURE_PICK_UP_CONFEXTS, "Picks up configuration extension images from boot partition" },
@@ -405,7 +408,6 @@ int verb_status(int argc, char *argv[], void *userdata) {
{ EFI_STUB_FEATURE_CMDLINE_SMBIOS, "Pick up .cmdline from SMBIOS Type 11" },
{ EFI_STUB_FEATURE_DEVICETREE_ADDONS, "Pick up .dtb from addons" },
{ EFI_STUB_FEATURE_MULTI_PROFILE_UKI, "Stub understands profile selector" },
{ EFI_STUB_FEATURE_REPORT_STUB_PARTITION, "Stub sets stub partition information" },
};
_cleanup_free_ char *fw_type = NULL, *fw_info = NULL, *loader = NULL, *loader_path = NULL, *stub = NULL, *stub_path = NULL,
*current_entry = NULL, *oneshot_entry = NULL, *default_entry = NULL;
@@ -480,6 +482,10 @@ int verb_status(int argc, char *argv[], void *userdata) {
(void) efi_loader_get_device_part_uuid(&loader_partition_uuid);
print_yes_no_line(/* first= */ false, !sd_id128_is_null(loader_partition_uuid), "Boot loader set partition information");
_cleanup_free_ char *loader_url = NULL;
(void) efi_get_variable_string_and_warn(EFI_LOADER_VARIABLE_STR("LoaderDeviceURL"), &loader_url);
print_yes_no_line(/* first= */ false, !!loader_url, "Boot loader set network boot URL information");
if (!sd_id128_is_null(loader_partition_uuid)) {
if (!sd_id128_is_null(esp_uuid) && !sd_id128_equal(esp_uuid, loader_partition_uuid))
printf("WARNING: The boot loader reports a different partition UUID than the detected ESP ("SD_ID128_UUID_FORMAT_STR" vs. "SD_ID128_UUID_FORMAT_STR")!\n",
@@ -493,6 +499,9 @@ int verb_status(int argc, char *argv[], void *userdata) {
if (loader_path)
printf(" Loader: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), strna(loader_path));
if (loader_url)
printf(" Net Boot URL: %s\n", loader_url);
if (current_entry)
printf("Current Entry: %s\n", current_entry);
if (default_entry)
@@ -513,6 +522,10 @@ int verb_status(int argc, char *argv[], void *userdata) {
(void) efi_stub_get_device_part_uuid(&stub_partition_uuid);
print_yes_no_line(/* first= */ false, !sd_id128_is_null(stub_partition_uuid), "Stub loader set partition information");
_cleanup_free_ char *stub_url = NULL;
(void) efi_get_variable_string_and_warn(EFI_LOADER_VARIABLE_STR("StubDeviceURL"), &stub_url);
print_yes_no_line(/* first= */ false, !!stub_url, "Stub set network boot URL information");
if (!sd_id128_is_null(stub_partition_uuid)) {
if (!(!sd_id128_is_null(esp_uuid) && sd_id128_equal(esp_uuid, stub_partition_uuid)) &&
!(!sd_id128_is_null(xbootldr_uuid) && sd_id128_equal(xbootldr_uuid, stub_partition_uuid)))
@@ -526,6 +539,10 @@ int verb_status(int argc, char *argv[], void *userdata) {
if (stub_path)
printf(" Stub: %s%s\n", special_glyph(SPECIAL_GLYPH_TREE_RIGHT), strna(stub_path));
if (stub_url)
printf(" Net Boot URL: %s\n", stub_url);
printf("\n");
}