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authorAnton Gerasimov <anton@advancedtelematic.com>2016-10-04 14:42:42 +0200
committerAnton Gerasimov <anton@advancedtelematic.com>2016-10-04 14:42:42 +0200
commit689d2a8e825b3fc77bd4671f2c0597d2de5f0fdf (patch)
tree50da6e3b59d6e112c15eabd2a3d675d7334ab4ab /meta-sota/recipes-sota/ostree-initrd/files
parent46b4d2dd4a44de0588426d69168415af3e01acac (diff)
Tuned initrd image and pseudo environment to fix bugs with extended
security attributes. Bug-AGL: SPEC-259 Change-Id: I44499ce3f5f1924aecf63689a93d1f20e779225e Signed-off-by: Anton Gerasimov <anton@advancedtelematic.com>
Diffstat (limited to 'meta-sota/recipes-sota/ostree-initrd/files')
-rw-r--r--meta-sota/recipes-sota/ostree-initrd/files/init.sh84
1 files changed, 84 insertions, 0 deletions
diff --git a/meta-sota/recipes-sota/ostree-initrd/files/init.sh b/meta-sota/recipes-sota/ostree-initrd/files/init.sh
new file mode 100644
index 0000000..5aa99d6
--- /dev/null
+++ b/meta-sota/recipes-sota/ostree-initrd/files/init.sh
@@ -0,0 +1,84 @@
+#!/bin/sh
+
+# global variables
+
+SMACK=n
+DEBUG=n
+
+# -------------------------------------------
+
+log_info() { echo "$0[$$]: $@" >&2; }
+log_error() { echo "$0[$$]: ERROR $@" >&2; }
+
+do_mount_fs() {
+ log_info "mounting FS: $@"
+ [[ -e /proc/filesystems ]] && { grep -q "$1" /proc/filesystems || { log_error "Unknown filesystem"; return 1; } }
+ [[ -d "$2" ]] || mkdir -p "$2"
+ [[ -e /proc/mounts ]] && { grep -q -e "^$1 $2 $1" /proc/mounts && { log_info "$2 ($1) already mounted"; return 0; } }
+ mount -t "$1" "$1" "$2"
+}
+
+bail_out() {
+ log_error "$@"
+ log_info "Rebooting..."
+ #exec reboot -f
+ exec sh
+}
+
+get_ostree_sysroot() {
+ for opt in `cat /proc/cmdline`; do
+ arg=`echo $opt | cut -d'=' -f1`
+ if [ $arg == "ostree_root" ]; then
+ echo $opt | cut -d'=' -f2
+ return
+ fi
+ done
+}
+
+export PATH=/sbin:/usr/sbin:/bin:/usr/bin
+
+log_info "starting initrd script"
+
+do_mount_fs proc /proc
+do_mount_fs sysfs /sys
+do_mount_fs devtmpfs /dev
+do_mount_fs devpts /dev/pts
+do_mount_fs tmpfs /dev/shm
+do_mount_fs tmpfs /tmp
+do_mount_fs tmpfs /run
+
+# check if smack is active (and if so, mount smackfs)
+grep -q smackfs /proc/filesystems && {
+ SMACK=y
+
+ do_mount_fs smackfs /sys/fs/smackfs
+
+ # adjust current label and network label
+ echo System >/proc/self/attr/current
+ echo System >/sys/fs/smackfs/ambient
+}
+
+mkdir -p /sysroot
+ostree_sysroot=$(get_ostree_sysroot)
+
+mount $ostree_sysroot /sysroot || bail_out "Unable to mount $ostree_sysroot as physical sysroot"
+ostree-prepare-root /sysroot
+
+# move mounted devices to new root
+cd /sysroot
+for x in dev proc; do
+ log_info "Moving /$x to new rootfs"
+ mount -o move /$x $x
+done
+
+# switch to new rootfs
+log_info "Switching to new rootfs"
+mkdir -p run/initramfs
+
+pivot_root . run/initramfs || bail_out "pivot_root failed."
+
+log_info "Launching target init"
+
+exec chroot . sh -c 'umount /run/initramfs; exec /sbin/init' \
+ <dev/console >dev/console 2>&1
+