On 06/04/2018 11:46 AM, Stefan Berger wrote:
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@xxxxxxxxxxxxxxxxxx>
Cc: Christian Ehrhardt <christian.ehrhardt@xxxxxxxxxxxxx>
After the recent changes I had made to it, I didn't think it was
appropriate to take the Reviewed-by. Can someone have a (quick) look?
Stefan
---
examples/apparmor/libvirt-qemu | 3 +++
src/security/virt-aa-helper.c | 45 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 48 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/@{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..7a6fb31e9a 100644
--- a/src/security/virt-aa-helper.c
+++ b/src/security/virt-aa-helper.c
@@ -1185,6 +1185,51 @@ get_files(vahControl * ctl)
}
}
+ if (ctl->def->tpm) {
+ char *shortName = NULL;
+ const char *tpmpath = NULL;
+
+ switch (ctl->def->tpm->type) {
+ case VIR_DOMAIN_TPM_TYPE_EMULATOR:
+ shortName = virDomainDefGetShortName(ctl->def);
+
+ switch (ctl->def->tpm->version) {
+ case VIR_DOMAIN_TPM_VERSION_1_2:
+ tpmpath = "tpm1.2";
+ break;
+ case VIR_DOMAIN_TPM_VERSION_2_0:
+ tpmpath = "tpm2";
+ break;
+ case VIR_DOMAIN_TPM_VERSION_DEFAULT:
+ case VIR_DOMAIN_TPM_VERSION_LAST:
+ break;
+ }
+
+ /* Unix socket for QEMU and swtpm to use */
+ virBufferAsprintf(&buf,
+ " \"/run/libvirt/qemu/swtpm/%s-swtpm.sock\" rw,\n",
+ shortName);
+ /* Paths for swtpm to use: give it access to its state
+ * directory, log, and PID files.
+ */
+ virBufferAsprintf(&buf,
+ " \"%s/lib/libvirt/swtpm/%s/%s/**\" rw,\n",
+ LOCALSTATEDIR, uuidstr, tpmpath);
+ virBufferAsprintf(&buf,
+ " \"%s/log/swtpm/libvirt/qemu/%s-swtpm.log\" a,\n",
+ LOCALSTATEDIR, ctl->def->name);
+ virBufferAsprintf(&buf,
+ " \"/run/libvirt/qemu/swtpm/%s-swtpm.pid\" rw,\n",
+ shortName);
+
+ VIR_FREE(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];
--
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