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Raspi2-3_GenImage
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1 #
1 #
2 # Setup fstab and initramfs
2 # Setup fstab and initramfs
3 #
3 #
4
4
5 # Load utility functions
5 # Load utility functions
6 . ./functions.sh
6 . ./functions.sh
7
7
8 # Install and setup fstab
8 # Install and setup fstab
9 install_readonly files/mount/fstab "${ETC_DIR}/fstab"
9 install_readonly files/mount/fstab "${ETC_DIR}/fstab"
10
10
11 if [ "$ENABLE_USBBOOT" = true ] ; then
11 if [ "$ENABLE_USBBOOT" = true ] ; then
12 sed -i "s/mmcblk0p1/sda1/" "${ETC_DIR}/fstab"
12 sed -i "s/mmcblk0p1/sda1/" "${ETC_DIR}/fstab"
13 sed -i "s/mmcblk0p2/sda2/" "${ETC_DIR}/fstab"
13 sed -i "s/mmcblk0p2/sda2/" "${ETC_DIR}/fstab"
14 fi
14 fi
15
15
16 # Add usb/sda disk root partition to fstab
16 # Add usb/sda disk root partition to fstab
17 if [ "$ENABLE_SPLITFS" = true ] && [ "$ENABLE_CRYPTFS" = false ] ; then
17 if [ "$ENABLE_SPLITFS" = true ] && [ "$ENABLE_CRYPTFS" = false ] ; then
18 sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/fstab"
18 sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/fstab"
19 fi
19 fi
20
20
21 # Add encrypted root partition to fstab and crypttab
21 # Add encrypted root partition to fstab and crypttab
22 if [ "$ENABLE_CRYPTFS" = true ] ; then
22 if [ "$ENABLE_CRYPTFS" = true ] ; then
23 # Replace fstab root partition with encrypted partition mapping
23 # Replace fstab root partition with encrypted partition mapping
24 sed -i "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING}/" "${ETC_DIR}/fstab"
24 sed -i "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING}/" "${ETC_DIR}/fstab"
25
25
26 # Add encrypted partition to crypttab and fstab
26 # Add encrypted partition to crypttab and fstab
27 install_readonly files/mount/crypttab "${ETC_DIR}/crypttab"
27 install_readonly files/mount/crypttab "${ETC_DIR}/crypttab"
28 echo "${CRYPTFS_MAPPING} /dev/mmcblk0p2 none luks" >> "${ETC_DIR}/crypttab"
28 echo "${CRYPTFS_MAPPING} /dev/mmcblk0p2 none luks" >> "${ETC_DIR}/crypttab"
29
29
30 if [ "$ENABLE_SPLITFS" = true ] ; then
30 if [ "$ENABLE_SPLITFS" = true ] ; then
31 # Add usb/sda disk to crypttab
31 # Add usb/sda disk to crypttab
32 sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/crypttab"
32 sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/crypttab"
33 fi
33 fi
34 fi
34 fi
35
35
36 # Generate initramfs file
36 # Generate initramfs file
37 if [ "$ENABLE_INITRAMFS" = true ] ; then
37 if [ "$ENABLE_INITRAMFS" = true ] ; then
38 if [ "$ENABLE_CRYPTFS" = true ] ; then
38 if [ "$ENABLE_CRYPTFS" = true ] ; then
39 # Include initramfs scripts to auto expand encrypted root partition
39 # Include initramfs scripts to auto expand encrypted root partition
40 if [ "$EXPANDROOT" = true ] ; then
40 if [ "$EXPANDROOT" = true ] ; then
41 install_exec files/initramfs/expand_encrypted_rootfs "${ETC_DIR}/initramfs-tools/scripts/init-premount/expand_encrypted_rootfs"
41 install_exec files/initramfs/expand_encrypted_rootfs "${ETC_DIR}/initramfs-tools/scripts/init-premount/expand_encrypted_rootfs"
42 install_exec files/initramfs/expand-premount "${ETC_DIR}/initramfs-tools/scripts/local-premount/expand-premount"
42 install_exec files/initramfs/expand-premount "${ETC_DIR}/initramfs-tools/scripts/local-premount/expand-premount"
43 install_exec files/initramfs/expand-tools "${ETC_DIR}/initramfs-tools/hooks/expand-tools"
43 install_exec files/initramfs/expand-tools "${ETC_DIR}/initramfs-tools/hooks/expand-tools"
44 fi
44 fi
45
45
46 if [ "$CRYPTFS_DROPBEAR" = true ] ; then
46 if [ "$ENABLE_DHCP" = false ] ; then
47 # Get cdir from NET_ADDRESS e.g. 24
47 # Get cdir from NET_ADDRESS e.g. 24
48 cdir=$(${NET_ADDRESS} | cut -d '/' -f2)
48 cdir=$(${NET_ADDRESS} | cut -d '/' -f2)
49
49
50 # Convert cdir ro netmask e.g. 24 to 255.255.255.0
50 # Convert cdir ro netmask e.g. 24 to 255.255.255.0
51 NET_MASK=$(cdr2mask "$cdir")
51 NET_MASK=$(cdr2mask "$cdir")
52
52
53 # Write static ip settings to "${ETC_DIR}"/initramfs-tools/initramfs.conf
53 # Write static ip settings to "${ETC_DIR}"/initramfs-tools/initramfs.conf
54 sed -i "\$aIP=${NET_ADDRESS}::${NET_GATEWAY}:${NET_MASK}:${HOSTNAME}:" "${ETC_DIR}"/initramfs-tools/initramfs.conf
54 sed -i "\$aIP=${NET_ADDRESS}::${NET_GATEWAY}:${NET_MASK}:${HOSTNAME}:" "${ETC_DIR}"/initramfs-tools/initramfs.conf
55
55
56 # Regenerate initramfs
56 # Regenerate initramfs
57 chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}"
57 chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}"
58 fi
58 fi
59
59
60 if [ "$CRYPTFS_DROPBEAR" = true ]; then
60 if [ "$CRYPTFS_DROPBEAR" = true ]; then
61 if [ -n "$CRYPTFS_DROPBEAR_PUBKEY" ] && [ -f "$CRYPTFS_DROPBEAR_PUBKEY" ] ; then
61 if [ -n "$CRYPTFS_DROPBEAR_PUBKEY" ] && [ -f "$CRYPTFS_DROPBEAR_PUBKEY" ] ; then
62 install_readonly "${CRYPTFS_DROPBEAR_PUBKEY}" "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub
62 install_readonly "${CRYPTFS_DROPBEAR_PUBKEY}" "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub
63 cat "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub >> "${ETC_DIR}"/dropbear-initramfs/authorized_keys
63 cat "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub >> "${ETC_DIR}"/dropbear-initramfs/authorized_keys
64 else
64 else
65 # Create key
65 # Create key
66 chroot_exec /usr/bin/dropbearkey -t rsa -f /etc/dropbear-initramfs/id_rsa.dropbear
66 chroot_exec /usr/bin/dropbearkey -t rsa -f /etc/dropbear-initramfs/id_rsa.dropbear
67
67
68 # Convert dropbear key to openssh key
68 # Convert dropbear key to openssh key
69 chroot_exec /usr/lib/dropbear/dropbearconvert dropbear openssh /etc/dropbear-initramfs/id_rsa.dropbear /etc/dropbear-initramfs/id_rsa
69 chroot_exec /usr/lib/dropbear/dropbearconvert dropbear openssh /etc/dropbear-initramfs/id_rsa.dropbear /etc/dropbear-initramfs/id_rsa
70
70
71 # Get Public Key Part
71 # Get Public Key Part
72 chroot_exec /usr/bin/dropbearkey -y -f /etc/dropbear-initramfs/id_rsa.dropbear | chroot_exec tee /etc/dropbear-initramfs/id_rsa.pub
72 chroot_exec /usr/bin/dropbearkey -y -f /etc/dropbear-initramfs/id_rsa.dropbear | chroot_exec tee /etc/dropbear-initramfs/id_rsa.pub
73
73
74 # Delete unwanted lines
74 # Delete unwanted lines
75 sed -i '/Public/d' "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub
75 sed -i '/Public/d' "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub
76 sed -i '/Fingerprint/d' "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub
76 sed -i '/Fingerprint/d' "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub
77
77
78 # Trust the new key
78 # Trust the new key
79 cat "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub > "${ETC_DIR}"/dropbear-initramfs/authorized_keys
79 cat "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub > "${ETC_DIR}"/dropbear-initramfs/authorized_keys
80
80
81 # Save Keys - convert with putty from rsa/openssh to puttkey
81 # Save Keys - convert with putty from rsa/openssh to puttkey
82 cp -f "${ETC_DIR}"/dropbear-initramfs/id_rsa "${BASEDIR}"/dropbear_initramfs_key.rsa
82 cp -f "${ETC_DIR}"/dropbear-initramfs/id_rsa "${BASEDIR}"/dropbear_initramfs_key.rsa
83
83
84 # Get unlock script
84 # Get unlock script
85 install_exec files/initramfs/crypt_unlock.sh "${ETC_DIR}"/initramfs-tools/hooks/crypt_unlock.sh
85 install_exec files/initramfs/crypt_unlock.sh "${ETC_DIR}"/initramfs-tools/hooks/crypt_unlock.sh
86
86
87 # Enable Dropbear inside initramfs
87 # Enable Dropbear inside initramfs
88 printf "#\n# DROPBEAR: [ y | n ]\n#\n\nDROPBEAR=y\n" >> "${ETC_DIR}/initramfs-tools/initramfs.conf"
88 printf "#\n# DROPBEAR: [ y | n ]\n#\n\nDROPBEAR=y\n" >> "${ETC_DIR}/initramfs-tools/initramfs.conf"
89
89
90 # Enable Dropbear inside initramfs
90 # Enable Dropbear inside initramfs
91 sed -i "54 i sleep 5" "${R}"/usr/share/initramfs-tools/scripts/init-premount/dropbear
91 sed -i "54 i sleep 5" "${R}"/usr/share/initramfs-tools/scripts/init-premount/dropbear
92 fi
92 fi
93 else
93 else
94 # Disable SSHD inside initramfs
94 # Disable SSHD inside initramfs
95 printf "#\n# DROPBEAR: [ y | n ]\n#\n\nDROPBEAR=n\n" >> "${ETC_DIR}/initramfs-tools/initramfs.conf"
95 printf "#\n# DROPBEAR: [ y | n ]\n#\n\nDROPBEAR=n\n" >> "${ETC_DIR}/initramfs-tools/initramfs.conf"
96 fi
96 fi
97
97
98 # Add cryptsetup modules to initramfs
98 # Add cryptsetup modules to initramfs
99 printf "#\n# CRYPTSETUP: [ y | n ]\n#\n\nCRYPTSETUP=y\n" >> "${ETC_DIR}/initramfs-tools/conf-hook"
99 printf "#\n# CRYPTSETUP: [ y | n ]\n#\n\nCRYPTSETUP=y\n" >> "${ETC_DIR}/initramfs-tools/conf-hook"
100
100
101 # Dummy mapping required by mkinitramfs
101 # Dummy mapping required by mkinitramfs
102 echo "0 1 crypt $(echo "${CRYPTFS_CIPHER}" | cut -d ':' -f 1) ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 0 7:0 4096" | chroot_exec dmsetup create "${CRYPTFS_MAPPING}"
102 echo "0 1 crypt $(echo "${CRYPTFS_CIPHER}" | cut -d ':' -f 1) ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 0 7:0 4096" | chroot_exec dmsetup create "${CRYPTFS_MAPPING}"
103
103
104 # Generate initramfs with encrypted root partition support
104 # Generate initramfs with encrypted root partition support
105 chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}"
105 chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}"
106
106
107 # Remove dummy mapping
107 # Remove dummy mapping
108 chroot_exec cryptsetup close "${CRYPTFS_MAPPING}"
108 chroot_exec cryptsetup close "${CRYPTFS_MAPPING}"
109 else
109 else
110 # Generate initramfs without encrypted root partition support
110 # Generate initramfs without encrypted root partition support
111 chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}"
111 chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}"
112 fi
112 fi
113 fi
113 fi
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