diff options
Diffstat (limited to 'util/cbfstool/eventlog.c')
| -rw-r--r-- | util/cbfstool/eventlog.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/util/cbfstool/eventlog.c b/util/cbfstool/eventlog.c index 2d99f9237a..8b03686ecd 100644 --- a/util/cbfstool/eventlog.c +++ b/util/cbfstool/eventlog.c @@ -11,6 +11,7 @@ #include <commonlib/bsd/elog.h> #include <vb2_api.h> +#include "common.h" #include "valstr.h" #define PATH_PCI_BUS_SHIFT 8 @@ -634,3 +635,42 @@ void eventlog_print_event(const struct event_header *event, int count) eventlog_printf_ignore_separator_once = 1; eventlog_printf("\n"); } + +/* + * Initializes the eventlog header with the given type and data, + * and calculates the checksum. + * buffer_get() points to the event to be initialized. + * On success it returns 1, otherwise 0. + */ +int eventlog_init_event(const struct buffer *buf, uint8_t type, + const void *data, int data_size) +{ + struct event_header *event; + time_t secs = time(NULL); + struct tm tm; + + /* Must have at least size for data + checksum byte */ + if (buffer_size(buf) < (size_t)data_size + 1) + return 0; + + event = buffer_get(buf); + + event->type = type; + gmtime_r(&secs, &tm); + elog_fill_timestamp(event, tm.tm_sec, tm.tm_min, tm.tm_hour, + tm.tm_mday, tm.tm_mon, tm.tm_year); + + if (data && data_size) { + uint32_t *ptr = (uint32_t *)&event[1]; + memcpy(ptr, data, data_size); + } + + /* Header + data + checksum */ + event->length = sizeof(*event) + data_size + 1; + + /* Zero the checksum byte and then compute checksum */ + elog_update_checksum(event, 0); + elog_update_checksum(event, -(elog_checksum_event(event))); + + return 1; +} |