Daniel P. Berrangé <berrange@redhat.com> [2018-10-24, 10:43PM +0100]:
We could optimize this by jcalling virFileAccessibleAs once and storing the result in a global. Then just do a plain stat() call in process to check the st_ctime field for changes. We only need re-run the heavy virFileAccessibleAs check if st_ctime has changed (indicating a owner/group/acl change).
But can't access permission change outside of changing the actual device file (e.g. cgroups or other OS capabilities)? Isn't that the whole purpose of the virFileAccessibleAs gymnastics? -- IBM Systems Linux on Z & Virtualization Development -------------------------------------------------- IBM Deutschland Research & Development GmbH Schönaicher Str. 220, 71032 Böblingen Phone: +49 7031 16 1819 -------------------------------------------------- Vorsitzende des Aufsichtsrats: Martina Koederitz Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen Registergericht: Amtsgericht Stuttgart, HRB 243294