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apparmor: qemu access to @{PROC}/*/auxv for hw_cap

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On some architectures (ppc, s390x, sparc, arm) qemu will read auxv
to detect hardware capabilities via qemu_getauxval.

Allow that access read-only for the entry owned by the current
qemu process.

Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Acked-by: Jamie Strandboge <jamie@canonical.com>
This commit is contained in:
Stefan Bader 2020-08-03 13:44:27 +02:00 committed by Christian Ehrhardt
parent e16967fd6e
commit 7c5ef98c00
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src/security/apparmor/libvirt-qemu
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@ -33,6 +33,8 @@
owner @{PROC}/@{pid}/task/@{tid}/comm rw,
@{PROC}/sys/kernel/cap_last_cap r,
@{PROC}/sys/vm/overcommit_memory r,
# detect hardware capabilities via qemu_getauxval
owner @{PROC}/*/auxv r,
# For hostdev access. The actual devices will be added dynamically
/sys/bus/usb/devices/ r,