Abhishekmishra2808 opened a new pull request, #19118: URL: https://github.com/apache/nuttx/pull/19118
*Note: Please adhere to [Contributing Guidelines](https://github.com/apache/nuttx/blob/master/CONTRIBUTING.md).* ## Summary Adds tg_suid and tg_sgid fields to task_group_s to complete the POSIX three-field identity model (real, effective, saved-set). Updates group_inherit_identity() to propagate the new fields from parent to child task group on task creation. Fixes setuid(), setgid(), seteuid(), and setegid() to implement correct POSIX privilege transition logic: - Root (euid==0): may set any value; all three IDs updated by setuid/setgid - Non-root: may only set effective ID to real or saved value; else EPERM ## Impact NuttX currently tracks only real and effective credentials. POSIX credential semantics require a saved set-user-ID and saved set-group-ID to support temporary privilege dropping and later restoration through seteuid()/setegid(). Adding saved IDs enables the standard privilege transition model used by setuid/setgid applications and provides the foundation for complete multi-user support. (https://github.com/apache/nuttx/issues/18458) ## Testing <img width="877" height="811" alt="image" src="https://github.com/user-attachments/assets/ef727dee-0d5f-4fe9-b151-fe5830856c15"; /> -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
