kdump-lib-initramfs: harden is_mounted
If the device/mountpoint for findmnt is omitted findmnt will list all mounted filesystems. In that case it will always return "true". So explicitly check if an argument was passed to prevent false-positives. Signed-off-by: Philipp Rudo <prudo@redhat.com> Reviewed-by: Coiby Xu <coxu@redhat.com>
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@ -30,7 +30,7 @@ kdump_get_conf_val()
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is_mounted()
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{
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findmnt -k -n "$1" > /dev/null 2>&1
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[ -n "$1" ] && findmnt -k -n "$1" > /dev/null 2>&1
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}
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# $1: info type
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