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virt-aa-helper: locking disk files for qemu 2.10
Testing qemu-2.10-rc2 shows issues like: qemu-system-x86_64: -drive file=/var/lib/uvtool/libvirt/images/kvmguest- \ artful-normal.qcow,format=qcow2,if=none,id=drive-virtio-disk0: Failed to lock byte 100 It seems the following qemu commit changed the needs for the backing image rules: (qemu) commit 244a5668106297378391b768e7288eb157616f64 Author: Fam Zheng <famz@redhat.com> file-posix: Add image locking to perm operations The block appears as: apparmor="DENIED" operation="file_lock" [...] name="/var/lib/uvtool/libvirt/images/kvmguest-artful-normal.qcow" [...] comm="qemu-system-x86" requested_mask="k" denied_mask="k" With that qemu change in place the rules generated for the image and backing files need the allowance to also lock (k) the files. Disks are added via add_file_path and with this fix rules now get that permission, but no other rules are changed, example: - "/var/lib/uvtool/libvirt/images/kvmguest-artful-normal-a2.qcow" rw, + "/var/lib/uvtool/libvirt/images/kvmguest-artful-normal-a2.qcow" rwk Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
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@ -892,11 +892,11 @@ add_file_path(virDomainDiskDefPtr disk,
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if (depth == 0) {
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if (disk->src->readonly)
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ret = vah_add_file(buf, path, "r");
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ret = vah_add_file(buf, path, "rk");
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else
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ret = vah_add_file(buf, path, "rw");
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ret = vah_add_file(buf, path, "rwk");
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} else {
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ret = vah_add_file(buf, path, "r");
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ret = vah_add_file(buf, path, "rk");
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}
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if (ret != 0)
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