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shared/acpi-fpdt: use ENODATA for missing data and skip test

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This data is simply missing on non-UEFI systems, and it is useful
to distinguish that from corrupted data.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2016-02-27 11:30:22 -05:00
parent a4bfedec70
commit 67a47c6096
2 changed files with 6 additions and 2 deletions
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6
src/shared/acpi-fpdt.c
View File

@ -119,7 +119,7 @@ int acpi_get_boot_usec(usec_t *loader_start, usec_t *loader_exit) {
}
if (ptr == 0)
return -EINVAL;
return -ENODATA;
/* read Firmware Basic Boot Performance Data Record */
fd = open("/dev/mem", O_CLOEXEC|O_RDONLY);
@ -146,6 +146,10 @@ int acpi_get_boot_usec(usec_t *loader_start, usec_t *loader_exit) {
if (brec.type != ACPI_FPDT_BOOT_REC)
return -EINVAL;
if (brec.exit_services_exit == 0)
/* Non-UEFI compatible boot. */
return -ENODATA;
if (brec.startup_start == 0 || brec.exit_services_exit < brec.startup_start)
return -EINVAL;
if (brec.exit_services_exit > NSEC_PER_HOUR)

2
src/test/test-boot-timestamps.c
View File

@ -34,7 +34,7 @@ static int test_acpi_fpdt(void) {
r = acpi_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 == -ENODATA;
log_full_errno(ok ? LOG_DEBUG : LOG_ERR,
r, "Failed to read ACPI FPDT: %m");