initscripts: check if swapon/swapoff exists before executing them
Not all built images contain swapon/swapoff, for instance, it is configurable with or without them in busybox. So it'd better to check if they exist or not before executing them. Redirecting the potential errors to /dev/null is not good enough, which might suppress the *real* errors. (From OE-Core rev: 2cb1142710cc2beb762c4c2b8edd44d3a97dafa0) Signed-off-by: Ming Liu <peter.x.liu@external.atlascopco.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -69,7 +69,7 @@ fi
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# before fsck, since fsck can be quite memory-hungry.
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#
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test "$VERBOSE" != no && echo "Activating swap"
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swapon -a 2> /dev/null
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[ -x /sbin/swapon ] && swapon -a
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#
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# Check the root filesystem.
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@ -33,7 +33,7 @@ kill -USR1 1
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# Execute swapon command again, in case we want to swap to
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# a file on a now mounted filesystem.
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#
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swapon -a 2> /dev/null
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[ -x /sbin/swapon ] && swapon -a
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: exit 0
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@ -12,7 +12,7 @@
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PATH=/sbin:/bin:/usr/sbin:/usr/bin
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echo "Deactivating swap..."
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swapoff -a
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[ -x /sbin/swapoff ] && swapoff -a
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# We leave /proc mounted.
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echo "Unmounting local filesystems..."
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