git: e1b5efda31c3 - stable/12 - nanobsd: Use gpart and create code image before full disk image
Warner Losh
imp at FreeBSD.org
Wed Jul 21 16:18:56 UTC 2021
The branch stable/12 has been updated by imp:
URL: https://cgit.FreeBSD.org/src/commit/?id=e1b5efda31c36df69af31e822c4967fba8ad2b50
commit e1b5efda31c36df69af31e822c4967fba8ad2b50
Author: Arrigo Marchiori <ardovm at yahoo.it>
AuthorDate: 2021-07-15 22:06:51 +0000
Commit: Warner Losh <imp at FreeBSD.org>
CommitDate: 2021-07-21 16:16:32 +0000
nanobsd: Use gpart and create code image before full disk image
The attached patch brings two main changes to the nanobsd script:
1- gpart is used instead of fdisk;
2- the code image is created first, and then used to ``assemble'' the
full disk image.
The patch was first proposed on the freebsd-embedded list:
http://lists.freebsd.org/pipermail/freebsd-embedded/2012-June/001580.html
and is currently under discussion:
http://lists.freebsd.org/pipermail/freebsd-embedded/2014-January/002216.html
Another effect is that the -f option ("suppress code slice extraction")
now imples the -i option ("suppress disk image build").
imp@ applied Patch by hand to new legacy.sh, plus tweaked for NANO_LOG vs
NANO_OBJ confusion in original.
PR: 186030
Reviewed by: imp@
Differential Revision: https://reviews.freebsd.org/D31102
(cherry picked from commit 587c054bea0f652fdbd86baf5807f21c904ac2ad)
---
tools/tools/nanobsd/defaults.sh | 4 +-
tools/tools/nanobsd/legacy.sh | 132 ++++++++++++++++++++++++++--------------
tools/tools/nanobsd/nanobsd.sh | 17 ++++--
3 files changed, 103 insertions(+), 50 deletions(-)
diff --git a/tools/tools/nanobsd/defaults.sh b/tools/tools/nanobsd/defaults.sh
index 86acab65f67d..365a8e9df714 100755
--- a/tools/tools/nanobsd/defaults.sh
+++ b/tools/tools/nanobsd/defaults.sh
@@ -161,6 +161,8 @@ NANO_SLICE_ROOT=s1
NANO_SLICE_ALTROOT=s2
NANO_SLICE_CFG=s3
NANO_SLICE_DATA=s4
+NANO_PARTITION_ROOT=a
+NANO_PARTITION_ALTROOT=a
NANO_ROOT=s1a
NANO_ALTROOT=s2a
@@ -856,7 +858,7 @@ usage ( ) {
echo "Usage: $0 [-bfhiKknqvwX] [-c config_file]"
echo " -b suppress builds (both kernel and world)"
echo " -c specify config file"
- echo " -f suppress code slice extraction"
+ echo " -f suppress code slice extraction (implies -i)"
echo " -h print this help summary page"
echo " -i suppress disk image build"
echo " -K suppress installkernel"
diff --git a/tools/tools/nanobsd/legacy.sh b/tools/tools/nanobsd/legacy.sh
index 0832179ba227..4ead17973316 100644
--- a/tools/tools/nanobsd/legacy.sh
+++ b/tools/tools/nanobsd/legacy.sh
@@ -35,30 +35,18 @@
# Functions and variable definitions used by the legacy nanobsd
# image building system.
-create_diskimage ( ) (
- pprint 2 "build diskimage"
- pprint 3 "log: ${NANO_LOG}/_.di"
-
- (
+calculate_partitioning ( ) (
echo $NANO_MEDIASIZE $NANO_IMAGES \
$NANO_SECTS $NANO_HEADS \
$NANO_CODESIZE $NANO_CONFSIZE $NANO_DATASIZE |
awk '
{
- printf "# %s\n", $0
-
# size of cylinder in sectors
cs = $3 * $4
# number of full cylinders on media
cyl = int ($1 / cs)
- # output fdisk geometry spec, truncate cyls to 1023
- if (cyl <= 1023)
- print "g c" cyl " h" $4 " s" $3
- else
- print "g c" 1023 " h" $4 " s" $3
-
if ($7 > 0) {
# size of data partition in full cylinders
dsl = int (($7 + cs - 1) / cs)
@@ -69,44 +57,100 @@ create_diskimage ( ) (
# size of config partition in full cylinders
csl = int (($6 + cs - 1) / cs)
+ # size of image partition(s) in full cylinders
if ($5 == 0) {
- # size of image partition(s) in full cylinders
isl = int ((cyl - dsl - csl) / $2)
} else {
isl = int (($5 + cs - 1) / cs)
}
# First image partition start at second track
- print "p 1 165 " $3, isl * cs - $3
+ print $3, isl * cs - $3
c = isl * cs;
# Second image partition (if any) also starts offset one
# track to keep them identical.
if ($2 > 1) {
- print "p 2 165 " $3 + c, isl * cs - $3
+ print $3 + c, isl * cs - $3
c += isl * cs;
}
# Config partition starts at cylinder boundary.
- print "p 3 165 " c, csl * cs
+ print c, csl * cs
c += csl * cs
# Data partition (if any) starts at cylinder boundary.
if ($7 > 0) {
- print "p 4 165 " c, dsl * cs
+ print c, dsl * cs
} else if ($7 < 0 && $1 > c) {
- print "p 4 165 " c, $1 - c
+ print c, $1 - c
} else if ($1 < c) {
print "Disk space overcommitted by", \
c - $1, "sectors" > "/dev/stderr"
exit 2
}
- # Force slice 1 to be marked active. This is necessary
- # for booting the image from a USB device to work.
- print "a 1"
}
- ' > ${NANO_LOG}/_.fdisk
+ ' > ${NANO_LOG}/_.partitioning
+)
+
+create_code_slice ( ) (
+ pprint 2 "build code slice"
+ pprint 3 "log: ${NANO_OBJ}/_.cs"
+
+ (
+ IMG=${NANO_DISKIMGDIR}/_.disk.image
+ MNT=${NANO_OBJ}/_.mnt
+ mkdir -p ${MNT}
+ CODE_SIZE=`head -n 1 ${NANO_LOG}/_.partitioning | awk '{ print $2 }'`
+
+ if [ "${NANO_MD_BACKING}" = "swap" ] ; then
+ MD=`mdconfig -a -t swap -s ${CODE_SIZE} -x ${NANO_SECTS} \
+ -y ${NANO_HEADS}`
+ else
+ echo "Creating md backing file..."
+ rm -f ${IMG}
+ dd if=/dev/zero of=${IMG} seek=${CODE_SIZE} count=0
+ MD=`mdconfig -a -t vnode -f ${IMG} -x ${NANO_SECTS} \
+ -y ${NANO_HEADS}`
+ fi
+
+ trap "echo 'Running exit trap code' ; df -i ${MNT} ; umount ${MNT} || true ; mdconfig -d -u $MD" 1 2 15 EXIT
+
+ bsdlabel -w ${MD}
+ if [ -f ${NANO_WORLDDIR}/boot/boot ]; then
+ echo "Making bootable partition"
+ gpart bootcode -b ${NANO_WORLDDIR}/boot/boot ${MD}
+ else
+ echo "Partition will not be bootable"
+ fi
+ bsdlabel ${MD}
+
+ # Create first image
+ populate_slice /dev/${MD}${NANO_PARTITION_ROOT} ${NANO_WORLDDIR} ${MNT} "${NANO_ROOT}"
+ mount /dev/${MD}a ${MNT}
+ echo "Generating mtree..."
+ ( cd ${MNT} && mtree -c ) > ${NANO_OBJ}/_.mtree
+ ( cd ${MNT} && du -k ) > ${NANO_OBJ}/_.du
+ nano_umount ${MNT}
+
+ if [ "${NANO_MD_BACKING}" = "swap" ] ; then
+ echo "Writing out _.disk.image..."
+ dd conv=sparse if=/dev/${MD} of=${NANO_DISKIMGDIR}/_.disk.image bs=64k
+ fi
+ mdconfig -d -u $MD
+
+ trap - 1 2 15 EXIT
+
+ ) > ${NANO_OBJ}/_.cs 2>&1
+)
+
+
+create_diskimage ( ) (
+ pprint 2 "build diskimage"
+ pprint 3 "log: ${NANO_OBJ}/_.di"
+
+ (
IMG=${NANO_DISKIMGDIR}/${NANO_IMGNAME}
MNT=${NANO_OBJ}/_.mnt
@@ -123,29 +167,34 @@ create_diskimage ( ) (
-y ${NANO_HEADS}`
fi
+ awk '
+ BEGIN {
+ # Create MBR partition table
+ print "gpart create -s mbr $1"
+ }
+ {
+ # Make partition
+ print "gpart add -t freebsd -b ", $1, " -s ", $2, " $1"
+ }
+ END {
+ # Force slice 1 to be marked active. This is necessary
+ # for booting the image from a USB device to work.
+ print "gpart set -a active -i 1 $1"
+ }
+ ' ${NANO_LOG}/_.partitioning > ${NANO_OBJ}/_.gpart
+
trap "echo 'Running exit trap code' ; df -i ${MNT} ; nano_umount ${MNT} || true ; mdconfig -d -u $MD" 1 2 15 EXIT
- fdisk -i -f ${NANO_LOG}/_.fdisk ${MD}
- fdisk ${MD}
+ sh ${NANO_OBJ}/_.gpart ${MD}
+ gpart show ${MD}
# XXX: params
# XXX: pick up cached boot* files, they may not be in image anymore.
if [ -f ${NANO_WORLDDIR}/${NANO_BOOTLOADER} ]; then
- boot0cfg -B -b ${NANO_WORLDDIR}/${NANO_BOOTLOADER} ${NANO_BOOT0CFG} ${MD}
- fi
- if [ -f ${NANO_WORLDDIR}/boot/boot ]; then
- bsdlabel -w -B -b ${NANO_WORLDDIR}/boot/boot ${MD}${NANO_SLICE_ROOT}
- else
- bsdlabel -w ${MD}${NANO_SLICE_ROOT}
+ gpart bootcode -b ${NANO_WORLDDIR}/${NANO_BOOTLOADER} ${NANO_BOOTFLAGS} ${MD}
fi
- bsdlabel ${MD}${NANO_SLICE_ROOT}
- # Create first image
- populate_slice /dev/${MD}${NANO_ROOT} ${NANO_WORLDDIR} ${MNT} "${NANO_ROOT}"
- mount /dev/${MD}${NANO_ROOT} ${MNT}
- echo "Generating mtree..."
- ( cd "${MNT}" && mtree -c ) > ${NANO_LOG}/_.mtree
- ( cd "${MNT}" && du -k ) > ${NANO_LOG}/_.du
- nano_umount "${MNT}"
+ echo "Writing code image..."
+ dd conv=sparse if=${NANO_DISKIMGDIR}/_.disk.image of=/dev/${MD}${NANO_SLICE_ROOT} bs=64k
if [ $NANO_IMAGES -gt 1 -a $NANO_INIT_IMG2 -gt 0 ] ; then
# Duplicate to second image (if present)
@@ -190,11 +239,6 @@ create_diskimage ( ) (
dd conv=sparse if=/dev/${MD} of=${IMG} bs=64k
fi
- if ${do_copyout_partition} ; then
- echo "Writing out ${NANO_IMG1NAME}..."
- dd conv=sparse if=/dev/${MD}${NANO_SLICE_ROOT} \
- of=${NANO_DISKIMGDIR}/${NANO_IMG1NAME} bs=64k
- fi
mdconfig -d -u $MD
trap - 1 2 15 EXIT
diff --git a/tools/tools/nanobsd/nanobsd.sh b/tools/tools/nanobsd/nanobsd.sh
index 89d0bed60b7a..c5c680025fc7 100755
--- a/tools/tools/nanobsd/nanobsd.sh
+++ b/tools/tools/nanobsd/nanobsd.sh
@@ -40,9 +40,9 @@ do_clean=true
do_kernel=true
do_installkernel=true
do_world=true
+do_code=true
do_installworld=true
do_image=true
-do_copyout_partition=true
do_native_xtools=false
do_prep_image=true
@@ -94,7 +94,8 @@ do
shift
;;
-f)
- do_copyout_partition=false
+ do_code=false
+ do_image=false
shift
;;
-h)
@@ -215,10 +216,16 @@ if $do_prep_image ; then
else
pprint 2 "Skipping image prep (as instructed)"
fi
-if $do_image ; then
- create_diskimage
+if $do_code ; then
+ calculate_partitioning
+ create_code_slice
+ if $do_image ; then
+ create_diskimage
+ else
+ pprint 2 "Skipping image build (as instructed)"
+ fi
else
- pprint 2 "Skipping image build (as instructed)"
+ pprint 2 "Skipping code and image build (as instructed)"
fi
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