[libvirt] [PATCH v8 13/18] security: Add swtpm paths to the domain's AppArmor profile

This patch extends the AppArmor domain profile with file paths the swtpm accesses for state, log, pid, and socket files. Both, QEMU and swtpm, use this AppArmor profile. Signed-off-by: Stefan Berger <stefanb(a)linux.vnet.ibm.com&gt; Cc: Christian Ehrhardt <christian.ehrhardt(a)canonical.com&gt; --- examples/apparmor/libvirt-qemu | 3 +++ src/security/virt-aa-helper.c | 24 ++++++++++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/examples/apparmor/libvirt-qemu b/examples/apparmor/libvirt-qemu index 2c47652250..854729d0ae 100644 --- a/examples/apparmor/libvirt-qemu +++ b/examples/apparmor/libvirt-qemu @@ -158,6 +158,9 @@ /usr/{lib,lib64}/qemu/*.so mr, /usr/lib/(a){multiarch}/qemu/*.so mr, + # swtpm + /usr/bin/swtpm rmix, + # for save and resume /{usr/,}bin/dash rmix, /{usr/,}bin/dd rmix, diff --git a/src/security/virt-aa-helper.c b/src/security/virt-aa-helper.c index d0f9876da5..6ee436e66c 100644 --- a/src/security/virt-aa-helper.c +++ b/src/security/virt-aa-helper.c @@ -1185,6 +1185,30 @@ get_files(vahControl * ctl) } } + if (ctl->def->tpm) { + char *shortName = virDomainDefGetShortName(ctl->def); + switch (ctl->def->tpm->type) { + case VIR_DOMAIN_TPM_TYPE_EMULATOR: + virBufferAsprintf(&buf, + " \"%s/run/libvirt/qemu/swtpm/%s-swtpm.sock\" x,\n", + LOCALSTATEDIR, shortName); + /* paths for swtpm to use */ + virBufferAsprintf(&buf, + " \"%s/lib/libvirt/swtpm/%s,tpm2/**\" rw,\n", + LOCALSTATEDIR, uuidstr); + virBufferAsprintf(&buf, + " \"%s/log/swtpm/libvirt/qemu/%s-swtpm.log\" rw,\n", + LOCALSTATEDIR, shortName); + virBufferAsprintf(&buf, + " \"%s/run/libvirt/qemu/swtpm/%s-swtpm.pid\" rw,\n", + LOCALSTATEDIR, shortName); + break; + case VIR_DOMAIN_TPM_TYPE_PASSTHROUGH: + case VIR_DOMAIN_TPM_TYPE_LAST: + break; + } + } + if (ctl->def->virtType == VIR_DOMAIN_VIRT_KVM) { for (i = 0; i < ctl->def->nnets; i++) { virDomainNetDefPtr net = ctl->def->nets[i]; -- 2.14.3