stub getgroups

Author: arihant2math

src/arch/arm64/exceptions/syscall.rs

@@ -73,9 +73,9 @@ use crate::{
         caps::{sys_capget, sys_capset},
         clone::sys_clone,
         creds::{
-            sys_getegid, sys_geteuid, sys_getgid, sys_getresgid, sys_getresuid, sys_getsid,
-            sys_gettid, sys_getuid, sys_setfsgid, sys_setfsuid, sys_setgid, sys_setregid,
-            sys_setresgid, sys_setresuid, sys_setreuid, sys_setsid, sys_setuid,
+            sys_getegid, sys_geteuid, sys_getgid, sys_getgroups, sys_getresgid, sys_getresuid,
+            sys_getsid, sys_gettid, sys_getuid, sys_setfsgid, sys_setfsuid, sys_setgid,
+            sys_setregid, sys_setresgid, sys_setresuid, sys_setreuid, sys_setsid, sys_setuid,
         },
         epoll::{sys_epoll_create1, sys_epoll_ctl, sys_epoll_pwait},
         exec::sys_execve,
@@ -620,6 +620,7 @@ pub async fn handle_syscall(mut ctx: ProcessCtx) {
         0x9b => sys_getpgid(&ctx, arg1 as _),
         0x9c => sys_getsid(&ctx).await,
         0x9d => sys_setsid(&ctx).await,
+        0x9e => sys_getgroups(&ctx, arg1 as _, TUA::from_value(arg2 as _)).map_err(|e| match e {}),
         0xa0 => sys_uname(TUA::from_value(arg1 as _)).await,
         0xa1 => sys_sethostname(&ctx, TUA::from_value(arg1 as _), arg2 as _).await,
         0xa3 => Err(KernelError::InvalidValue),

src/process/creds.rs

@@ -328,6 +328,15 @@ pub fn sys_setfsgid(ctx: &ProcessCtx, _new_id: usize) -> core::result::Result<us
     sys_getgid(ctx)
 }
 
+pub fn sys_getgroups(
+    _ctx: &ProcessCtx,
+    _size: usize,
+    _list: TUA<Gid>,
+) -> core::result::Result<usize, Infallible> {
+    // Supplementary groups are not implemented yet.
+    Ok(0)
+}
+
 pub fn sys_gettid(ctx: &ProcessCtx) -> core::result::Result<usize, Infallible> {
     let tid: u32 = ctx.shared().tid.0;