64 lines
1.2 KiB
Bash
64 lines
1.2 KiB
Bash
#!/bin/bash -ex
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ROOT="$PWD/rpi-root"
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LOOP=9
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if [ $# -lt 1 ]; then
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echo "Usage: $0 <image> <exec>"
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exit 1
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fi
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IMAGE="$1"
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LOOP_DEV=/dev/loop${LOOP}
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EXEC=
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if [ $# -gt 1 ]; then
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shift
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EXEC="$@"
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fi
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# install dependecies
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if [ ! -e /usr/bin/qemu-arm-static ]; then
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apt-get update
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apt-get install -y qemu qemu-user-static binfmt-support
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fi
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# Clean up on EXIT
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function cleanup {
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umount "$ROOT"/{dev/pts,dev,sys,proc,boot,mnt/host,} 2>/dev/null || true
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losetup -d $LOOP_DEV 2>/dev/null || true
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rmdir "$ROOT" 2>/dev/null || true
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}
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trap cleanup EXIT
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# set up image as loop device
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losetup $LOOP_DEV "$IMAGE"
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partprobe $LOOP_DEV
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# check and fix filesystems
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fsck -f ${LOOP_DEV}p1
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fsck -f ${LOOP_DEV}p2
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# make dir
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mkdir -p "$ROOT"
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# mount partition
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mount -o rw ${LOOP_DEV}p2 -t ext4 "$ROOT"
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mount -o rw ${LOOP_DEV}p1 "$ROOT/boot"
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# mount binds
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mount --bind /dev "$ROOT/dev/"
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mount --bind /sys "$ROOT/sys/"
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mount --bind /proc "$ROOT/proc/"
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mount --bind /dev/pts "$ROOT/dev/pts"
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if [ -e ./rpi-share ]; then
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mkdir -p "$ROOT/mnt/host"
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mount --bind ./rpi-share "$ROOT/mnt/host"
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fi
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# copy qemu binary
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cp /usr/bin/qemu-arm-static "$ROOT/usr/bin/"
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# chroot to raspbian
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chroot "$ROOT" $EXEC
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