mkimage: fit_image: Add support for SOURCE_DATE_EPOCH in signatures

[u-boot] / tools / imagetool.c

diff --git a/tools/imagetool.c b/tools/imagetool.c
index 08d191d9f894a6b86afd867de33ec4026c2286f2..b3e628f612f527f7a3ed11afb7c57395ae6a6bab 100644 (file)
--- a/tools/imagetool.c
+++ b/tools/imagetool.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2013
  *
  * Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include "imagetool.h"
@@ -115,3 +114,23 @@ int imagetool_get_filesize(struct image_tool_params *params, const char *fname)
 
        return sbuf.st_size;
 }
+
+time_t imagetool_get_source_date(
+        const char *cmdname,
+        time_t fallback)
+{
+       char *source_date_epoch = getenv("SOURCE_DATE_EPOCH");
+
+       if (source_date_epoch == NULL)
+               return fallback;
+
+       time_t time = (time_t) strtol(source_date_epoch, NULL, 10);
+
+       if (gmtime(&time) == NULL) {
+               fprintf(stderr, "%s: SOURCE_DATE_EPOCH is not valid\n",
+                       cmdname);
+               time = 0;
+       }
+
+       return time;
+}