patacongo commented on code in PR #8924:
URL: https://github.com/apache/nuttx/pull/8924#discussion_r1152177168


##########
binfmt/binfmt_execmodule.c:
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@@ -266,6 +266,10 @@ int exec_module(FAR struct binary_s *binp,
 
   pid = tcb->cmn.pid;
 
+#ifdef CONFIG_SCHED_USER_IDENTITY
+  tcb->cmn.group->tg_uid = binp->proguid;

Review Comment:
   > I think that is depended on the fork and setuid policy from app. But we 
can set a default UID when task is creating.
   
   NuttX currently sets the user and group IDs of  "normally" created tasks to 
the IDs of the parent:  
https://github.com/apache/nuttx/blob/master/sched/group/group_create.c#L91  I 
think an inconsistent policy for executable modules would be a bad idea.
   
   When running executable files on a file system, the POSIX behavior differs 
depending on the state of ST_NOSUID permission bit on the file.  Are you trying 
to emulate setting the UID from the UID in the executable file permissions?
   
   I certainly think we as a project need to agree on this policy before we 
commit to it.  This has long term implications for behavior and compatibility 
with POSIX and other *nix systems.
   



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