Refactored wait

Author: elicn

qiling/os/posix/syscall/wait.py

@@ -3,26 +3,23 @@
 # Cross Platform and Multi Architecture Advanced Binary Emulation Framework
 #
 
+import os
 
-from qiling.const import *
-from qiling.os.linux.thread import *
-from qiling.const import *
-from qiling.os.posix.filestruct import *
-from qiling.os.filestruct import *
-from qiling.os.posix.const_mapping import *
-from qiling.exception import *
-from qiling.utils import *
+from qiling import Qiling
 from qiling.os.posix.const import ECHILD
 
+def ql_syscall_wait4(ql: Qiling, pid: int, wstatus: int, options: int, rusage: int):
+    # convert to signed (pid_t is 32bit)
+    pid = ql.unpack32s(ql.pack32(pid))
 
-def ql_syscall_wait4(ql, wait4_pid, wait4_wstatus, wait4_options, wait4_rusage, *args, **kw):
-    wait4_pid = ql.unpack32s(ql.pack32(wait4_pid))  # convert to signed (pid_t is 32bit)
     try:
-        spid, status, rusage = os.wait4(wait4_pid, wait4_options)
-        if wait4_wstatus != 0:
-            ql.mem.write(wait4_wstatus, ql.pack32(status))
-        regreturn = spid
+        spid, status, _ = os.wait4(pid, options)
+
+        if wstatus:
+            ql.mem.write(wstatus, ql.pack32(status))
+
+        retval = spid
     except ChildProcessError:
-        regreturn = -ECHILD
-    return regreturn
+        retval = -ECHILD
 
+    return retval