Ignore epoll syscalls

kernel/src/syscall/mod.rs

@@ -154,8 +154,10 @@ impl Syscall<'_> {
             SYS_PPOLL => {
                 self.sys_ppoll(args[0] as *mut PollFd, args[1], args[2] as *const TimeSpec)
             } // ignore sigmask
-            SYS_EPOLL_CREATE1 => self.unimplemented("epoll_create1", Err(SysError::ENOSYS)),
+            SYS_EPOLL_CREATE1 => self.unimplemented("epoll_create1", Ok(0)),
             SYS_EPOLL_CTL => self.unimplemented("epoll_ctl", Err(SysError::EPERM)),
+            SYS_EPOLL_WAIT => self.unimplemented("epoll_wait", Ok(0)),
+            SYS_EPOLL_PWAIT => self.unimplemented("epoll_pwait", Ok(0)),
 
             // file system
             SYS_STATFS => self.unimplemented("statfs", Err(SysError::EACCES)),