[libvirt] [sandbox 2/6] machine: use squash security mode for non-root virt-sandbox mounts

[Cédric Bosdonnat]

When running virt-sandbox as a user with host-bind mount, the user
can't write in the mounted folder. If run as root, use passthrough
security mode, otherwise use squashed one to fix this.
---
 libvirt-sandbox/libvirt-sandbox-builder-machine.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libvirt-sandbox/libvirt-sandbox-builder-machine.c b/libvirt-sandbox/libvirt-sandbox-builder-machine.c
index 7204f71..b6f2218 100644
--- a/libvirt-sandbox/libvirt-sandbox-builder-machine.c
+++ b/libvirt-sandbox/libvirt-sandbox-builder-machine.c
@@ -589,7 +589,10 @@ static gboolean gvir_sandbox_builder_machine_construct_devices(GVirSandboxBuilde
 
             fs = gvir_config_domain_filesys_new();
             gvir_config_domain_filesys_set_type(fs, GVIR_CONFIG_DOMAIN_FILESYS_MOUNT);
-            gvir_config_domain_filesys_set_access_type(fs, GVIR_CONFIG_DOMAIN_FILESYS_ACCESS_PASSTHROUGH);
+            if (getuid() == 0)
+                gvir_config_domain_filesys_set_access_type(fs, GVIR_CONFIG_DOMAIN_FILESYS_ACCESS_PASSTHROUGH);
+            else
+                gvir_config_domain_filesys_set_access_type(fs, GVIR_CONFIG_DOMAIN_FILESYS_ACCESS_SQUASH);
             gvir_config_domain_filesys_set_source(fs,
                                                   gvir_sandbox_config_mount_file_get_source(mfile));
             gvir_config_domain_filesys_set_target(fs, target);
-- 
2.15.1