Add args to entrypoint.

Signed-off-by: Klaus Ma <klausm@nvidia.com>

busybox.yaml

@@ -1,3 +1,3 @@
 name: busybox
 image: busybox
-entrypoint: /bin/ls
+entrypoint: ["/bin/ls", "/"]

src/apis/types.rs

@@ -22,15 +22,15 @@ pub type ChariotResult<T> = Result<T, Box<dyn Error>>;
 pub struct Sandbox {
     pub name: String,
     pub image: String,
-    pub entrypoint: String,
+    pub entrypoint: Vec<String>,
     pub containers: Vec<Container>,
 }
 
 #[derive(Clone, Serialize, Deserialize, PartialEq, Debug)]
 pub struct Container {
     pub name: String,
     pub image: String,
-    pub entrypoint: String,
+    pub entrypoint: Vec<String>,
 }
 
 #[derive(thiserror::Error, Debug)]

src/core/cmd/runc/mod.rs

@@ -11,7 +11,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-use std::ffi::{CStr, CString};
+use std::ffi::{CString};
 use std::fs;
 use std::io::{Read, Write};
 use std::{thread, time};
@@ -176,13 +176,18 @@ fn run_container(cxt: cfg::Context, container: Container) -> ChariotResult<()> {
     // Setup fstab, e.g. /proc, /dev.
     // setup_fstab(cxt.clone(), container.clone())?;
 
-    tracing::debug!("Redirect container stdout/stderr to log file.");
-    dup2(log, 1)?;
-    dup2(log, 2)?;
+    let cmd = CString::new(container.entrypoint[0].as_bytes())?;
+    let args = container
+        .entrypoint
+        .iter()
+        .filter_map(|c| CString::new(c.as_bytes()).ok())
+        .collect::<Vec<_>>();
 
     // execute `container entrypoint`
-    let cmd = CString::new(container.entrypoint.as_bytes())?;
-    execve::<&CStr, &CStr>(cmd.as_c_str(), &[cmd.as_c_str()], &[])?;
+    tracing::debug!("Redirect container stdout/stderr to log file, and execve the entrypoint.");
+    dup2(log, 1)?;
+    dup2(log, 2)?;
+    execve::<CString, CString>(&cmd, args.as_slice(), &[])?;
 
     Ok(())
 }