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core: add comments about timestamps stored in manager

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This commit is contained in:
Yu Watanabe 2018-08-06 16:16:21 +09:00
parent cc0eb780bd
commit 7bc740f480
1 changed files with 21 additions and 0 deletions
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21
src/core/manager.h
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@ -53,6 +53,27 @@ typedef enum StatusType {
STATUS_TYPE_EMERGENCY,
} StatusType;
/* Notes:
* 1. TIMESTAMP_FIRMWARE, TIMESTAMP_LOADER, TIMESTAMP_KERNEL, TIMESTAMP_INITRD,
* TIMESTAMP_SECURITY_START, and TIMESTAMP_SECURITY_FINISH are set only when
* the manager is system and not running under container environment.
*
* 2. The monotonic timestamp of TIMESTAMP_KERNEL is always zero.
*
* 3. The realtime timestamp of TIMESTAMP_KERNEL will be unset if the system does not
* have RTC.
*
* 4. TIMESTAMP_FIRMWARE and TIMESTAMP_LOADER will be unset if the system does not
* have RTC, or systemd is built without EFI support.
*
* 5. The monotonic timestamps of TIMESTAMP_FIRMWARE and TIMESTAMP_LOADER are stored as
* negative of the actual value.
*
* 6. TIMESTAMP_USERSPACE is the timestamp of when the manager was started.
*
* 7. TIMESTAMP_INITRD_* are set only when the system is booted with an initrd.
*/
typedef enum ManagerTimestamp {
MANAGER_TIMESTAMP_FIRMWARE,
MANAGER_TIMESTAMP_LOADER,