[libvirt] [PATCH] virt-aa-helper: Fix permissions for vhost-user socket files

[Michal Dubiel]

QEMU working in vhost-user mode communicates with the other end (i.e.
some virtual router application) via unix domain sockets. This requires
that permissions for the socket files are correctly written into
/etc/apparmor.d/libvirt/libvirt-UUID.files.

Signed-off-by: Michal Dubiel <md at semihalf.com>
---
 src/security/virt-aa-helper.c | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/src/security/virt-aa-helper.c b/src/security/virt-aa-helper.c
index 35423b5..a097aa6 100644
--- a/src/security/virt-aa-helper.c
+++ b/src/security/virt-aa-helper.c
@@ -592,19 +592,9 @@ valid_path(const char *path, const bool readonly)
 
     if (!virFileExists(path)) {
         vah_warning(_("path does not exist, skipping file type checks"));
-    } else {
-        if (stat(path, &sb) == -1)
+    } else if (stat(path, &sb) == -1)
             return -1;
 
-        switch (sb.st_mode & S_IFMT) {
-            case S_IFSOCK:
-                return 1;
-                break;
-            default:
-                break;
-        }
-    }
-
     opaths = sizeof(override)/sizeof(*(override));
 
     npaths = sizeof(restricted)/sizeof(*(restricted));
@@ -1101,6 +1091,18 @@ get_files(vahControl * ctl)
         }
     }
 
+    for (i = 0; i < ctl->def->nnets; i++) {
+        if (ctl->def->nets[i] &&
+                ctl->def->nets[i]->type == VIR_DOMAIN_NET_TYPE_VHOSTUSER &&
+                ctl->def->nets[i]->data.vhostuser) {
+            virDomainChrSourceDefPtr vhu = ctl->def->nets[i]->data.vhostuser;
+
+            if (vah_add_file_chardev(&buf, vhu->data.nix.path, "rw",
+                       vhu->type) != 0)
+                goto cleanup;
+        }
+    }
+
     if (ctl->def->virtType == VIR_DOMAIN_VIRT_KVM) {
         for (i = 0; i < ctl->def->nnets; i++) {
             virDomainNetDefPtr net = ctl->def->nets[i];
-- 
1.9.1