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bus/pci: fix Intel IOMMU sysfs access check
Just open the sysfs file and handle failure, rather than using access(). This eliminates Coverity warnings about TOCTOU "time of check versus time of use"; although for this sysfs file that is not really an issue anyway. Coverity issue: 347276 Fixes: 54a328f ("bus/pci: forbid IOVA mode if IOMMU address width too small") Cc: stable@dpdk.org Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Reviewed-by: David Marchand <david.marchand@redhat.com>
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