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| author | Vagrant Cascadian <vagrant@debian.org> | 2016-06-16 12:28:40 -0700 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-06-24 17:23:10 -0400 |
| commit | 5847084f6bbd0778afb29f0574085d4210ea8cff (patch) | |
| tree | 2ccd6681ecc410829fb8598a3c4fc7ba95e608bc /tools/imagetool.c | |
| parent | 42ffa51fd46bc6fd4bf2c244f00a80df31d01596 (diff) | |
| download | talos-obmc-uboot-5847084f6bbd0778afb29f0574085d4210ea8cff.tar.gz talos-obmc-uboot-5847084f6bbd0778afb29f0574085d4210ea8cff.zip | |
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 <vagrant@debian.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'tools/imagetool.c')
| -rw-r--r-- | tools/imagetool.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/imagetool.c b/tools/imagetool.c index 08d191d9f8..855a096d0a 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; +} |
