From 5847084f6bbd0778afb29f0574085d4210ea8cff Mon Sep 17 00:00:00 2001 From: Vagrant Cascadian Date: Thu, 16 Jun 2016 12:28:40 -0700 Subject: Respect SOURCE_DATE_EPOCH when building FIT images. Embedding timestamps in FIT images results in unreproducible builds for targets that generate a fit image, such as dra7xx_evm. This patch uses the SOURCE_DATE_EPOCH environment variable, when set, to use specified value for the date. Thanks to HW42 for debugging the issue and providing the patch: https://lists.alioth.debian.org/pipermail/reproducible-builds/Week-of-Mon-20160606/005722.html For more information about reproducible builds and the SOURCE_DATE_EPOCH specification: https://reproducible-builds.org/specs/source-date-epoch/ https://reproducible-builds.org/ Signed-off-by: Vagrant Cascadian Reviewed-by: Simon Glass --- tools/imagetool.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'tools/imagetool.c') diff --git a/tools/imagetool.c b/tools/imagetool.c index 08d191d..855a096 100644 --- a/tools/imagetool.c +++ b/tools/imagetool.c @@ -115,3 +115,23 @@ int imagetool_get_filesize(struct image_tool_params *params, const char *fname) return sbuf.st_size; } + +time_t imagetool_get_source_date( + struct image_tool_params *params, + 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", + params->cmdname); + time = 0; + } + + return time; +} -- cgit v1.1