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| author | emaste <emaste@FreeBSD.org> | 2017-01-25 01:04:51 +0000 |
|---|---|---|
| committer | emaste <emaste@FreeBSD.org> | 2017-01-25 01:04:51 +0000 |
| commit | dc47b733e66efd0d5af4953ba33a5877e3e54b8f (patch) | |
| tree | d927bdf4c964e7ea8ff439880300540978dd1b0d /sys/boot/common | |
| parent | 59522422d6d0ca53d9b19d6ac7213481ce7a6321 (diff) | |
| download | FreeBSD-src-dc47b733e66efd0d5af4953ba33a5877e3e54b8f.zip FreeBSD-src-dc47b733e66efd0d5af4953ba33a5877e3e54b8f.tar.gz | |
Add WITH_REPRODUCIBLE_BUILD src.conf(5) knob
MFC r310128: Add WITH_REPRODUCIBLE_BUILD src.conf(5) knob to disable kernel
metadata
The kernel builds reproducibly, except for the time, date, user, and
hostname baked into the kernel (reported at startup and via the
kern.version sysctl for uname). Add a build knob to disable the
inclusion of this metadata.
MFC r310268: Build loaders reproducibly when WITH_REPRODUCIBLE_BUILD
When WITH_REPRODUCIBLE_BUILD=yes is set in src.conf(5), eliminate the
time, user, and host from the loader's version information. This allows
builds to produce bit-for-bit identical output.
Diffstat (limited to 'sys/boot/common')
| -rw-r--r-- | sys/boot/common/Makefile.inc | 6 | ||||
| -rwxr-xr-x | sys/boot/common/newvers.sh | 17 |
2 files changed, 21 insertions, 2 deletions
diff --git a/sys/boot/common/Makefile.inc b/sys/boot/common/Makefile.inc index 8bd6c7d..eb17549 100644 --- a/sys/boot/common/Makefile.inc +++ b/sys/boot/common/Makefile.inc @@ -73,5 +73,9 @@ CFLAGS+=-I${.CURDIR}/../../../../lib/libstand CLEANFILES+= vers.c VERSION_FILE?= ${.CURDIR}/version +.if ${MK_REPRODUCIBLE_BUILD} != no +REPRO_FLAG= -r +.endif vers.c: ${SRCTOP}/sys/boot/common/newvers.sh ${VERSION_FILE} - sh ${SRCTOP}/sys/boot/common/newvers.sh ${VERSION_FILE} ${NEWVERSWHAT} + sh ${SRCTOP}/sys/boot/common/newvers.sh ${REPRO_FLAG} ${VERSION_FILE} \ + ${NEWVERSWHAT} diff --git a/sys/boot/common/newvers.sh b/sys/boot/common/newvers.sh index 167b7cc..9547c85 100755 --- a/sys/boot/common/newvers.sh +++ b/sys/boot/common/newvers.sh @@ -35,11 +35,26 @@ tempfile=$(mktemp tmp.XXXXXX) || exit trap "rm -f $tempfile" EXIT INT TERM +include_metadata=true +while getopts r opt; do + case "$opt" in + r) + include_metadata= + ;; + esac +done +shift $((OPTIND - 1)) + LC_ALL=C; export LC_ALL u=${USER-root} h=${HOSTNAME-`hostname`} t=`date` #r=`head -n 6 $1 | tail -n 1 | awk -F: ' { print $1 } '` r=`awk -F: ' /^[0-9]\.[0-9]+:/ { print $1; exit }' $1` -echo "char bootprog_info[] = \"FreeBSD/${3} ${2}, Revision ${r}\\n(${t} ${u}@${h})\\n\";" > $tempfile +bootprog_info="FreeBSD/${3} ${2}, Revision ${r}\\n" +if [ -n "${include_metadata}" ]; then + bootprog_info="$bootprog_info(${t} ${u}@${h})\\n" +fi + +echo "char bootprog_info[] = \"$bootprog_info\";" > $tempfile echo "unsigned bootprog_rev = ${r%%.*}${r##*.};" >> $tempfile mv $tempfile vers.c |
