src/drivers/generic/cbfs-uuid/cbfs-uuid.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <cbfs.h>
   4 #include <device/device.h>
   5 #include <smbios.h>
   6 #include <string.h>
   7 #include <uuid.h>
   8
   9 void smbios_system_set_uuid(u8 *uuid)
  10 {
  11         /* Add 3 more bytes: 2 for possible CRLF and third for NULL char */
  12         char uuid_str[UUID_STRLEN + 3] = {0};
  13         uint8_t system_uuid[UUID_LEN];
  14
  15         size_t uuid_len = cbfs_load("system_uuid", uuid_str, UUID_STRLEN);
  16
  17         if (uuid_len >= UUID_STRLEN && uuid_len <= UUID_STRLEN + 3) {
  18                 /* Cut off any trailing whitespace like CR or LF */
  19                 uuid_str[UUID_STRLEN] = '\0';
  20                 if (!parse_uuid(system_uuid, uuid_str))
  21                         memcpy(uuid, system_uuid, UUID_LEN);
  22         }
  23 }