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efivars: check whether we are booted with EFI before reading/writing to variables

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We do these checks only for the high-level calls as for the low-level
ones it might make sense in some exotic uses to read the host EFI data
from a container or so.
This commit is contained in:
Lennart Poettering
2018-10-08 21:40:44 +02:00
parent bb161cdc24
commit 337eed30e4
2 changed files with 42 additions and 10 deletions
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src/test/test-boot-timestamps.c
+2 -2
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@@ -41,7 +41,7 @@ static int test_efi_loader(void) {
r = efi_loader_get_boot_usec(&loader_start, &loader_exit);
if (r < 0) {
bool ok = r == -ENOENT || (getuid() != 0 && r == -EACCES);
bool ok = r == -ENOENT || (getuid() != 0 && r == -EACCES) || r == -EOPNOTSUPP;
log_full_errno(ok ? LOG_DEBUG : LOG_ERR,
r, "Failed to read EFI loader data: %m");
@@ -64,7 +64,7 @@ static int test_boot_timestamps(void) {
r = boot_timestamps(NULL, &fw, &l);
if (r < 0) {
bool ok = r == -ENOENT || (getuid() != 0 && r == -EACCES);
bool ok = r == -ENOENT || (getuid() != 0 && r == -EACCES) || r == -EOPNOTSUPP;
log_full_errno(ok ? LOG_DEBUG : LOG_ERR,
r, "Failed to read variables: %m");