vmm: provide oem_strings option

Signed-off-by: Wei Liu <liuwe@microsoft.com>

vmm/src/config.rs

@@ -636,6 +636,8 @@ pub struct PlatformConfig {
     pub serial_number: Option<String>,
     #[serde(default)]
     pub uuid: Option<String>,
+    #[serde(default)]
+    pub oem_strings: Option<Vec<String>>,
 }
 
 impl PlatformConfig {
@@ -645,6 +647,7 @@ impl PlatformConfig {
         parser.add("iommu_segments");
         parser.add("serial_number");
         parser.add("uuid");
+        parser.add("oem_strings");
         parser.parse(platform).map_err(Error::ParsePlatform)?;
 
         let num_pci_segments: u16 = parser
@@ -659,11 +662,16 @@ impl PlatformConfig {
             .convert("serial_number")
             .map_err(Error::ParsePlatform)?;
         let uuid = parser.convert("uuid").map_err(Error::ParsePlatform)?;
+        let oem_strings = parser
+            .convert::<StringList>("oem_strings")
+            .map_err(Error::ParsePlatform)?
+            .map(|v| v.0);
         Ok(PlatformConfig {
             num_pci_segments,
             iommu_segments,
             serial_number,
             uuid,
+            oem_strings,
         })
     }
 
@@ -693,6 +701,7 @@ impl Default for PlatformConfig {
             iommu_segments: None,
             serial_number: None,
             uuid: None,
+            oem_strings: None,
         }
     }
 }

vmm/src/vm.rs

@@ -1127,6 +1127,18 @@ impl Vm {
             .as_ref()
             .and_then(|p| p.uuid.clone());
 
+        let oem_strings = self
+            .config
+            .lock()
+            .unwrap()
+            .platform
+            .as_ref()
+            .and_then(|p| p.oem_strings.clone());
+
+        let oem_strings = oem_strings
+            .as_deref()
+            .map(|strings| strings.iter().map(|s| s.as_ref()).collect::<Vec<&str>>());
+
         arch::configure_system(
             &mem,
             arch::layout::CMDLINE_START,
@@ -1136,6 +1148,7 @@ impl Vm {
             sgx_epc_region,
             serial_number.as_deref(),
             uuid.as_deref(),
+            oem_strings.as_deref(),
         )
         .map_err(Error::ConfigureSystem)?;
         Ok(())