root / snf-image-host / snf-image-update-helper.in @ 5cbb15b9
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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 | |
5 | d51a95a8 | Nikos Skalkotos | . @osdir@/common.sh |
6 | d51a95a8 | Nikos Skalkotos | |
7 | d51a95a8 | Nikos Skalkotos | CACHE_FILE="$HELPER_DIR/cache.tar" |
8 | d51a95a8 | Nikos Skalkotos | ARCH=amd64 |
9 | 52ac594c | Nikos Skalkotos | EXTRA_PKGS="linux-image-amd64,e2fsprogs,ntfs-3g,ntfsprogs,xmlstarlet,python" |
10 | d51a95a8 | Nikos Skalkotos | |
11 | 52ac594c | Nikos Skalkotos | if [ ! -e "$HELPER_PKG" ]; then |
12 | 52ac594c | Nikos Skalkotos | log_error "Helper package \`$HELPER_PKG' not found." |
13 | 52ac594c | Nikos Skalkotos | log_error "You need to provide this for the script to work" |
14 | 52ac594c | Nikos Skalkotos | exit 1 |
15 | 52ac594c | Nikos Skalkotos | fi |
16 | 52ac594c | Nikos Skalkotos | cat >&1 <<EOF |
17 | 52ac594c | Nikos Skalkotos | This program will overwrite the following files: |
18 | 52ac594c | Nikos Skalkotos | \`$HELPER_DIR/initrd' |
19 | 52ac594c | Nikos Skalkotos | \`$HELPER_DIR/kernel' |
20 | 52ac594c | Nikos Skalkotos | \`$HELPER_DIR/image' |
21 | 52ac594c | Nikos Skalkotos | EOF |
22 | 52ac594c | Nikos Skalkotos | |
23 | 52ac594c | Nikos Skalkotos | while [[ 1 ]]; do |
24 | 52ac594c | Nikos Skalkotos | echo -n "Do you want to continue [y/N]?" |
25 | 52ac594c | Nikos Skalkotos | read answer |
26 | 52ac594c | Nikos Skalkotos | [ "$(echo -n "$answer" | tr [A-Z] [a-z])" = "y" ] && break |
27 | 52ac594c | Nikos Skalkotos | if [ -z "$answer" -o "$(echo -n "$answer" | tr [A-Z] [a-z])" = "n" ]; then |
28 | 52ac594c | Nikos Skalkotos | log_error "Abord." |
29 | 52ac594c | Nikos Skalkotos | exit 1 |
30 | 52ac594c | Nikos Skalkotos | fi |
31 | 52ac594c | Nikos Skalkotos | done |
32 | 52ac594c | Nikos Skalkotos | |
33 | 52ac594c | Nikos Skalkotos | rm -f "$HELPER_DIR/initrd" "$HELPER_DIR/kernel" "$HELPER_DIR/image" |
34 | 52ac594c | Nikos Skalkotos | |
35 | 52ac594c | Nikos Skalkotos | echo -n "Allocating space for helper disk image..." |
36 | d51a95a8 | Nikos Skalkotos | helper_img=$(mktemp $HELPER_DIR/image.XXXXXXXX) |
37 | d51a95a8 | Nikos Skalkotos | |
38 | 52ac594c | Nikos Skalkotos | dd if=/dev/zero of=$helper_img bs=1k count=400000 &> /dev/null |
39 | 52ac594c | Nikos Skalkotos | echo "done" |
40 | 52ac594c | Nikos Skalkotos | |
41 | d51a95a8 | Nikos Skalkotos | blockdev=$(losetup -sf $helper_img) |
42 | d51a95a8 | Nikos Skalkotos | CLEANUP+=("losetup -d $blockdev") |
43 | d51a95a8 | Nikos Skalkotos | |
44 | 52ac594c | Nikos Skalkotos | sleep 1 # sometimes losetup returns and the device is still busy.. |
45 | 52ac594c | Nikos Skalkotos | |
46 | 52ac594c | Nikos Skalkotos | echo -n "Creating partitions..." |
47 | d51a95a8 | Nikos Skalkotos | format_disk0 $blockdev "extdump" |
48 | 52ac594c | Nikos Skalkotos | echo "done" |
49 | d51a95a8 | Nikos Skalkotos | |
50 | d51a95a8 | Nikos Skalkotos | root_dev=$(map_disk0 $blockdev)-1 |
51 | d51a95a8 | Nikos Skalkotos | CLEANUP+=("unmap_disk0 $blockdev") |
52 | d51a95a8 | Nikos Skalkotos | |
53 | d51a95a8 | Nikos Skalkotos | mkfs.ext3 $root_dev |
54 | d51a95a8 | Nikos Skalkotos | |
55 | d51a95a8 | Nikos Skalkotos | TMPDIR=$(mktemp -d) |
56 | d51a95a8 | Nikos Skalkotos | CLEANUP+=("rmdir $TMPDIR") |
57 | d51a95a8 | Nikos Skalkotos | |
58 | d51a95a8 | Nikos Skalkotos | mount $root_dev $TMPDIR |
59 | d51a95a8 | Nikos Skalkotos | CLEANUP+=("umount $root_dev") |
60 | d51a95a8 | Nikos Skalkotos | |
61 | 52ac594c | Nikos Skalkotos | echo "Checking for cached root filesystem file \`$CACHE_FILE'..." |
62 | d51a95a8 | Nikos Skalkotos | if [ -f "$CACHE_FILE" ]; then |
63 | 52ac594c | Nikos Skalkotos | echo "found" |
64 | d51a95a8 | Nikos Skalkotos | tar xf "$CACHE_FILE" -C $TMPDIR |
65 | d51a95a8 | Nikos Skalkotos | else |
66 | 52ac594c | Nikos Skalkotos | echo "not found" |
67 | 52ac594c | Nikos Skalkotos | echo "Debootstraping to create a new root filesystem:" |
68 | d51a95a8 | Nikos Skalkotos | debootstrap --arch "$ARCH" --include $EXTRA_PKGS --variant=minbase \ |
69 | d51a95a8 | Nikos Skalkotos | squeeze $TMPDIR |
70 | d51a95a8 | Nikos Skalkotos | |
71 | d51a95a8 | Nikos Skalkotos | # remove the downloaded debs, as they are no longer needed |
72 | d51a95a8 | Nikos Skalkotos | find "$TMPDIR/var/cache/apt/archives" -type f -name '*.deb' -print0 | \ |
73 | d51a95a8 | Nikos Skalkotos | xargs -r0 rm -f |
74 | d51a95a8 | Nikos Skalkotos | |
75 | d51a95a8 | Nikos Skalkotos | TMP_CACHE=$(mktemp "${CACHE_FILE}.XXXXXX") |
76 | d51a95a8 | Nikos Skalkotos | tar cf "$TMP_CACHE" -C $TMPDIR . |
77 | d51a95a8 | Nikos Skalkotos | mv -f "$TMP_CACHE" "$CACHE_FILE" |
78 | d51a95a8 | Nikos Skalkotos | fi |
79 | d51a95a8 | Nikos Skalkotos | |
80 | 52ac594c | Nikos Skalkotos | echo -n "Configureing filesystem..." |
81 | d51a95a8 | Nikos Skalkotos | echo helper > $TMPDIR/etc/hostname |
82 | d51a95a8 | Nikos Skalkotos | |
83 | d51a95a8 | Nikos Skalkotos | cat > $TMPDIR/etc/fstab <<EOF |
84 | d51a95a8 | Nikos Skalkotos | # /etc/fstab: static file system information. |
85 | d51a95a8 | Nikos Skalkotos | # |
86 | d51a95a8 | Nikos Skalkotos | # <file system> <mount point> <type> <options> <dump> <pass> |
87 | d51a95a8 | Nikos Skalkotos | /dev/sda1 / ext3 defaults 0 1 |
88 | d51a95a8 | Nikos Skalkotos | proc /proc proc defaults 0 0 |
89 | d51a95a8 | Nikos Skalkotos | EOF |
90 | 52ac594c | Nikos Skalkotos | echo "done" |
91 | d51a95a8 | Nikos Skalkotos | |
92 | 52ac594c | Nikos Skalkotos | echo -n "Extracting kernel..." |
93 | d51a95a8 | Nikos Skalkotos | if [ ! -L "$TMPDIR/vmlinuz" -o ! -L "$TMPDIR/vmlinuz" ]; then |
94 | d51a95a8 | Nikos Skalkotos | |
95 | d51a95a8 | Nikos Skalkotos | log_error "vmlinuz or initrd.img link in root is missing." |
96 | d51a95a8 | Nikos Skalkotos | log_error "I don't know how to find a usable kernel/initrd pair." |
97 | d51a95a8 | Nikos Skalkotos | exit 1 |
98 | d51a95a8 | Nikos Skalkotos | fi |
99 | 52ac594c | Nikos Skalkotos | echo "done" |
100 | d51a95a8 | Nikos Skalkotos | |
101 | d51a95a8 | Nikos Skalkotos | kernel=$(readlink -en $TMPDIR/vmlinuz) |
102 | d51a95a8 | Nikos Skalkotos | initrd=$(readlink -en $TMPDIR/initrd.img) |
103 | d51a95a8 | Nikos Skalkotos | |
104 | d51a95a8 | Nikos Skalkotos | echo "Moving $(basename $kernel) and $(basename $initrd) to $HELPER_DIR" |
105 | d51a95a8 | Nikos Skalkotos | mv $kernel $initrd $HELPER_DIR |
106 | d51a95a8 | Nikos Skalkotos | |
107 | d51a95a8 | Nikos Skalkotos | kernel=$(basename $kernel) |
108 | d51a95a8 | Nikos Skalkotos | initrd=$(basename $initrd) |
109 | d51a95a8 | Nikos Skalkotos | |
110 | d51a95a8 | Nikos Skalkotos | (cd $HELPER_DIR; ln -fs $kernel kernel; ln -fs $initrd initrd) |
111 | d51a95a8 | Nikos Skalkotos | |
112 | d51a95a8 | Nikos Skalkotos | rm $TMPDIR/vmlinuz $TMPDIR/initrd.img |
113 | d51a95a8 | Nikos Skalkotos | |
114 | 52ac594c | Nikos Skalkotos | echo "Installing snf-image-helper pkg in the new image..." |
115 | 52ac594c | Nikos Skalkotos | cp $HELPER_PKG $TMPDIR/tmp/ |
116 | 52ac594c | Nikos Skalkotos | pkg_name=$(basename "$HELPER_PKG") |
117 | 52ac594c | Nikos Skalkotos | CLEANUP+=("rm $TMPDIR/tmp/$pkg_name") |
118 | 52ac594c | Nikos Skalkotos | chroot ${TMPDIR} dpkg -i /tmp/$pkg_name |
119 | 3b0420ce | Nikos Skalkotos | |
120 | 3b0420ce | Nikos Skalkotos | cat > ${TMPDIR}/etc/rc.local <<EOF |
121 | 3b0420ce | Nikos Skalkotos | #!/bin/sh -e |
122 | 3b0420ce | Nikos Skalkotos | # |
123 | 3b0420ce | Nikos Skalkotos | # rc.local |
124 | 3b0420ce | Nikos Skalkotos | # |
125 | 3b0420ce | Nikos Skalkotos | # This script is executed at the end of each multiuser runlevel. |
126 | 3b0420ce | Nikos Skalkotos | # Make sure that the script will "exit 0" on success or any other |
127 | 3b0420ce | Nikos Skalkotos | # value on error. |
128 | 3b0420ce | Nikos Skalkotos | # |
129 | 3b0420ce | Nikos Skalkotos | # In order to enable or disable this script just change the execution |
130 | 3b0420ce | Nikos Skalkotos | # bits. |
131 | 3b0420ce | Nikos Skalkotos | # |
132 | 3b0420ce | Nikos Skalkotos | # By default this script does nothing. |
133 | 3b0420ce | Nikos Skalkotos | |
134 | 3b0420ce | Nikos Skalkotos | /usr/bin/snf-image-helper |
135 | 3b0420ce | Nikos Skalkotos | |
136 | 3b0420ce | Nikos Skalkotos | exit 0 |
137 | 3b0420ce | Nikos Skalkotos | EOF |
138 | 3b0420ce | Nikos Skalkotos | |
139 | 3b0420ce | Nikos Skalkotos | chmod +x ${TMPDIR}/etc/rc.local |
140 | 3b0420ce | Nikos Skalkotos | |
141 | 52ac594c | Nikos Skalkotos | echo "done" |
142 | 52ac594c | Nikos Skalkotos | |
143 | d51a95a8 | Nikos Skalkotos | cleanup |
144 | d51a95a8 | Nikos Skalkotos | |
145 | d51a95a8 | Nikos Skalkotos | mv $helper_img $HELPER_DIR/image |
146 | d51a95a8 | Nikos Skalkotos | |
147 | d51a95a8 | Nikos Skalkotos | trap - EXIT |
148 | d51a95a8 | Nikos Skalkotos | |
149 | d51a95a8 | Nikos Skalkotos | exit 0 |
150 | d51a95a8 | Nikos Skalkotos | |
151 | d51a95a8 | Nikos Skalkotos | # vim: set sta sts=4 shiftwidth=4 sw=4 et ai : |