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reproducible_builds: SOURCE_DATE_EPOCH should not be 0

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A SOURCE_DATE_EPOCH of 0 might be misinterpreted by namely rpm as no SDE.

 e.g.:
 char *srcdate = getenv(SOURCE_DATE_EPOCH);
 if (srcdate && rpmExpandNumeric(%{?clamp_mtime_to_source_date_epoch}))

Solve this by:
- providing a SOURCE_DATE_EPOCH_FALLBACK variable != 0
- changing defaults to use it
- using SOURCE_DATE_EPOCH_FALLBACK also when reading 0 out of sstate-cache

(From OE-Core rev: 9a1dde74e794362399193dc3f81c9685a83d0776)

Signed-off-by: Jan-Simon Möller <jsmoeller@linuxfoundation.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Jan-Simon Möller
2021-02-20 18:29:33 +01:00
committed by Richard Purdie
parent e9e23ec77e
commit 7e9c2f33d4
1 changed files with 15 additions and 4 deletions
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19
meta/classes/reproducible_build.bbclass
View File

@@ -37,10 +37,13 @@
BUILD_REPRODUCIBLE_BINARIES ??= '1'
inherit ${@oe.utils.ifelse(d.getVar('BUILD_REPRODUCIBLE_BINARIES') == '1', 'reproducible_build_simple', '')}
SDE_DIR ="${WORKDIR}/source-date-epoch"
SDE_DIR = "${WORKDIR}/source-date-epoch"
SDE_FILE = "${SDE_DIR}/__source_date_epoch.txt"
SDE_DEPLOYDIR = "${WORKDIR}/deploy-source-date-epoch"
# A SOURCE_DATE_EPOCH of '0' might be misinterpreted as no SDE
export SOURCE_DATE_EPOCH_FALLBACK ??= "1302044400"
SSTATETASKS += "do_deploy_source_date_epoch"
do_deploy_source_date_epoch () {
@@ -81,6 +84,10 @@ python create_source_date_epoch_stamp() {
source_date_epoch = oe.reproducible.get_source_date_epoch(d, d.getVar('S'))
if source_date_epoch == 0 :
bb.debug(1, "source_date_epoch is 0, using SOURCE_DATE_EPOCH_FALLBACK instead.")
source_date_epoch = int(d.getVar('SOURCE_DATE_EPOCH_FALLBACK'))
bb.debug(1, "SOURCE_DATE_EPOCH: %d" % source_date_epoch)
bb.utils.mkdirhier(d.getVar('SDE_DIR'))
with open(epochfile, 'w') as f:
@@ -93,15 +100,19 @@ def get_source_date_epoch_value(d):
return cached
epochfile = d.getVar('SDE_FILE')
source_date_epoch = 0
source_date_epoch = int(d.getVar('SOURCE_DATE_EPOCH_FALLBACK'))
if os.path.isfile(epochfile):
with open(epochfile, 'r') as f:
s = f.read()
try:
source_date_epoch = int(s)
# workaround for old sstate with SDE_FILE content being 0 - use SOURCE_DATE_EPOCH_FALLBACK
if source_date_epoch == 0 :
source_date_epoch = int(d.getVar('SOURCE_DATE_EPOCH_FALLBACK'))
bb.warn("SOURCE_DATE_EPOCH value from sstate '%s' is deprecated/invalid. Reverting to SOURCE_DATE_EPOCH_FALLBACK '%s'" % (s, source_date_epoch))
except ValueError:
bb.warn("SOURCE_DATE_EPOCH value '%s' is invalid. Reverting to 0" % s)
source_date_epoch = 0
bb.warn("SOURCE_DATE_EPOCH value '%s' is invalid. Reverting to SOURCE_DATE_EPOCH_FALLBACK" % s)
source_date_epoch = int(d.getVar('SOURCE_DATE_EPOCH_FALLBACK'))
bb.debug(1, "SOURCE_DATE_EPOCH: %d" % source_date_epoch)
else:
bb.debug(1, "Cannot find %s. SOURCE_DATE_EPOCH will default to %d" % (epochfile, source_date_epoch))