root / host / snf-image-update-helper.in @ d51a95a8
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1 | d51a95a8 | Nikos Skalkotos | #!/bin/bash |
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2 | d51a95a8 | Nikos Skalkotos | |
3 | d51a95a8 | Nikos Skalkotos | set -e |
4 | d51a95a8 | Nikos Skalkotos | set -x |
5 | d51a95a8 | Nikos Skalkotos | |
6 | d51a95a8 | Nikos Skalkotos | . @osdir@/common.sh |
7 | d51a95a8 | Nikos Skalkotos | |
8 | d51a95a8 | Nikos Skalkotos | CACHE_FILE="$HELPER_DIR/cache.tar" |
9 | d51a95a8 | Nikos Skalkotos | ARCH=amd64 |
10 | d51a95a8 | Nikos Skalkotos | EXTRA_PKGS="linux-image-amd64,e2fsprogs,ntfs-3g,xmlstarlet" |
11 | d51a95a8 | Nikos Skalkotos | |
12 | d51a95a8 | Nikos Skalkotos | helper_img=$(mktemp $HELPER_DIR/image.XXXXXXXX) |
13 | d51a95a8 | Nikos Skalkotos | |
14 | d51a95a8 | Nikos Skalkotos | dd if=/dev/zero of=$helper_img bs=1k count=400000 |
15 | d51a95a8 | Nikos Skalkotos | blockdev=$(losetup -sf $helper_img) |
16 | d51a95a8 | Nikos Skalkotos | CLEANUP+=("losetup -d $blockdev") |
17 | d51a95a8 | Nikos Skalkotos | |
18 | d51a95a8 | Nikos Skalkotos | format_disk0 $blockdev "extdump" |
19 | d51a95a8 | Nikos Skalkotos | |
20 | d51a95a8 | Nikos Skalkotos | root_dev=$(map_disk0 $blockdev)-1 |
21 | d51a95a8 | Nikos Skalkotos | CLEANUP+=("unmap_disk0 $blockdev") |
22 | d51a95a8 | Nikos Skalkotos | |
23 | d51a95a8 | Nikos Skalkotos | mkfs.ext3 $root_dev |
24 | d51a95a8 | Nikos Skalkotos | |
25 | d51a95a8 | Nikos Skalkotos | TMPDIR=$(mktemp -d) |
26 | d51a95a8 | Nikos Skalkotos | CLEANUP+=("rmdir $TMPDIR") |
27 | d51a95a8 | Nikos Skalkotos | |
28 | d51a95a8 | Nikos Skalkotos | mount $root_dev $TMPDIR |
29 | d51a95a8 | Nikos Skalkotos | CLEANUP+=("umount $root_dev") |
30 | d51a95a8 | Nikos Skalkotos | |
31 | d51a95a8 | Nikos Skalkotos | if [ -f "$CACHE_FILE" ]; then |
32 | d51a95a8 | Nikos Skalkotos | tar xf "$CACHE_FILE" -C $TMPDIR |
33 | d51a95a8 | Nikos Skalkotos | else |
34 | d51a95a8 | Nikos Skalkotos | debootstrap --arch "$ARCH" --include $EXTRA_PKGS --variant=minbase \ |
35 | d51a95a8 | Nikos Skalkotos | squeeze $TMPDIR |
36 | d51a95a8 | Nikos Skalkotos | |
37 | d51a95a8 | Nikos Skalkotos | # remove the downloaded debs, as they are no longer needed |
38 | d51a95a8 | Nikos Skalkotos | find "$TMPDIR/var/cache/apt/archives" -type f -name '*.deb' -print0 | \ |
39 | d51a95a8 | Nikos Skalkotos | xargs -r0 rm -f |
40 | d51a95a8 | Nikos Skalkotos | |
41 | d51a95a8 | Nikos Skalkotos | TMP_CACHE=$(mktemp "${CACHE_FILE}.XXXXXX") |
42 | d51a95a8 | Nikos Skalkotos | tar cf "$TMP_CACHE" -C $TMPDIR . |
43 | d51a95a8 | Nikos Skalkotos | mv -f "$TMP_CACHE" "$CACHE_FILE" |
44 | d51a95a8 | Nikos Skalkotos | fi |
45 | d51a95a8 | Nikos Skalkotos | |
46 | d51a95a8 | Nikos Skalkotos | echo helper > $TMPDIR/etc/hostname |
47 | d51a95a8 | Nikos Skalkotos | |
48 | d51a95a8 | Nikos Skalkotos | cat > $TMPDIR/etc/fstab <<EOF |
49 | d51a95a8 | Nikos Skalkotos | # /etc/fstab: static file system information. |
50 | d51a95a8 | Nikos Skalkotos | # |
51 | d51a95a8 | Nikos Skalkotos | # <file system> <mount point> <type> <options> <dump> <pass> |
52 | d51a95a8 | Nikos Skalkotos | /dev/sda1 / ext3 defaults 0 1 |
53 | d51a95a8 | Nikos Skalkotos | proc /proc proc defaults 0 0 |
54 | d51a95a8 | Nikos Skalkotos | EOF |
55 | d51a95a8 | Nikos Skalkotos | |
56 | d51a95a8 | Nikos Skalkotos | if [ ! -L "$TMPDIR/vmlinuz" -o ! -L "$TMPDIR/vmlinuz" ]; then |
57 | d51a95a8 | Nikos Skalkotos | |
58 | d51a95a8 | Nikos Skalkotos | log_error "vmlinuz or initrd.img link in root is missing." |
59 | d51a95a8 | Nikos Skalkotos | log_error "I don't know how to find a usable kernel/initrd pair." |
60 | d51a95a8 | Nikos Skalkotos | exit 1 |
61 | d51a95a8 | Nikos Skalkotos | fi |
62 | d51a95a8 | Nikos Skalkotos | |
63 | d51a95a8 | Nikos Skalkotos | kernel=$(readlink -en $TMPDIR/vmlinuz) |
64 | d51a95a8 | Nikos Skalkotos | initrd=$(readlink -en $TMPDIR/initrd.img) |
65 | d51a95a8 | Nikos Skalkotos | |
66 | d51a95a8 | Nikos Skalkotos | echo "Moving $(basename $kernel) and $(basename $initrd) to $HELPER_DIR" |
67 | d51a95a8 | Nikos Skalkotos | mv $kernel $initrd $HELPER_DIR |
68 | d51a95a8 | Nikos Skalkotos | |
69 | d51a95a8 | Nikos Skalkotos | kernel=$(basename $kernel) |
70 | d51a95a8 | Nikos Skalkotos | initrd=$(basename $initrd) |
71 | d51a95a8 | Nikos Skalkotos | |
72 | d51a95a8 | Nikos Skalkotos | (cd $HELPER_DIR; ln -fs $kernel kernel; ln -fs $initrd initrd) |
73 | d51a95a8 | Nikos Skalkotos | |
74 | d51a95a8 | Nikos Skalkotos | rm $TMPDIR/vmlinuz $TMPDIR/initrd.img |
75 | d51a95a8 | Nikos Skalkotos | |
76 | d51a95a8 | Nikos Skalkotos | cleanup |
77 | d51a95a8 | Nikos Skalkotos | |
78 | d51a95a8 | Nikos Skalkotos | mv $helper_img $HELPER_DIR/image |
79 | d51a95a8 | Nikos Skalkotos | |
80 | d51a95a8 | Nikos Skalkotos | trap - EXIT |
81 | d51a95a8 | Nikos Skalkotos | |
82 | d51a95a8 | Nikos Skalkotos | exit 0 |
83 | d51a95a8 | Nikos Skalkotos | |
84 | d51a95a8 | Nikos Skalkotos | # vim: set sta sts=4 shiftwidth=4 sw=4 et ai : |