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efi: cache LoaderEntries EFI variable

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Based-on:

https://github.com/systemd/systemd/issues/14828#issuecomment-634202054
This commit is contained in:
Lennart Poettering
2020-05-29 15:40:01 +02:00
parent ceae629564
commit d4bd786d69
7 changed files with 58 additions and 25 deletions
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src/boot/bootctl.c
+8 -1
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@@ -1311,6 +1311,7 @@ static int verb_status(int argc, char *argv[], void *userdata) {
static int verb_list(int argc, char *argv[], void *userdata) {
_cleanup_(boot_config_free) BootConfig config = {};
_cleanup_strv_free_ char **efi_entries = NULL;
int r;
/* If we lack privileges we invoke find_esp_and_warn() in "unprivileged mode" here, which does two things: turn
@@ -1333,7 +1334,13 @@ static int verb_list(int argc, char *argv[], void *userdata) {
if (r < 0)
return r;
(void) boot_entries_augment_from_loader(&config, false);
r = efi_loader_get_entries(&efi_entries);
if (r == -ENOENT || ERRNO_IS_NOT_SUPPORTED(r))
log_debug_errno(r, "Boot loader reported no entries.");
else if (r < 0)
log_warning_errno(r, "Failed to determine entries reported by boot loader, ignoring: %m");
else
(void) boot_entries_augment_from_loader(&config, efi_entries, false);
if (config.n_entries == 0)
log_info("No boot loader entries found.");