qemu-ga guest-exec & SELinux

Hi!

https://bugzilla.redhat.com/show_bug.cgi?id=2093355 ("AVCs when trying to
execute a command through qemu-ga ("guest-exec" command)") describes an
issue with fedora/rhel SELinux rules, where some program executions are
denied.

qemu-ga has "virt_qemu_ga_t" context, and is not allowed to execute
binaries that are not "bin_t", iiuc. The suggestion from Renaud Métrich is
for qemu-ga exec command to launch the user program through an helper
program that would have the virt_qemu_ga_unconfined_exec_t context, and
appropriate rules in selinux (similar to fsfreeze-hook rules), so any
program can be executed. qemu-ga would thus ship and use that helper, in
all OS, to avoid varying code paths.

Does that sound reasonable or should we try to find a solution with SELinux
rules instead?

thanks

-- 
Marc-André Lureau

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