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7c106a3bb8
Add read-only-rootfs-hook.sh script to support a read-only rootfs. This script makes a union mount of /var/lib and /var/volatile/lib, making /var/lib directory writable. [YOCTO #3406] (From OE-Core rev: a9591158962eee1f8ae04168d6256032ecd7bc6b) Signed-off-by: Chen Qi <Qi.Chen@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
20 lines
398 B
Bash
20 lines
398 B
Bash
#!/bin/sh
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. /etc/default/rcS
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[ "$ROOTFS_READ_ONLY" = "no" ] && exit 0
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# Make sure unionfs is in /proc/filesystems
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if ! grep -q unionfs /proc/filesystems; then
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echo "ERROR: unionfs not supported by kernel!"
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exit 1
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fi
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mkdir -p /var/volatile/lib
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mount -t unionfs -o dirs=/var/volatile/lib:/var/lib=ro none /var/lib
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if [ $? != 0 ]; then
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echo "ERROR: Union mount failed!"
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exit 1
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fi
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