Bug 16327

Summary:	Handle new openat2 flags in pseudo
Product:	[Yocto Project Subprojects] Pseudo	Reporter:	Paul Barker <paul>
Component:	pseudo	Assignee:	Mark Hatle <mark.hatle>
Status:	NEW ---	QA Contact:
Severity:	normal
Priority:	Medium	CC:	tim.orling, yp.pseudo.watcher, yp.watcher
Version:	unspecified
Target Milestone:	6.1
Hardware:	x86
OS:	Multiple
Whiteboard:
OS type for building Yocto:	---	Type of Regression:	---
Verified:		Documentation change:	Don't know

Description Paul Barker 2026-06-19 09:17:12 UTC

This is very much **not urgent**, but capturing it now that I've seen it.

According to LWN (https://lwn.net/Articles/1078068/), Linux 7.2 will include:

- The openat2() system call supports a new flag called O_EMPTYPATH. It exists for a specific purpose: to allow a process to reopen an O_PATH file descriptor to gain access to the file behind it. With O_EMPTYPATH, an empty path name can be given to openat2(), and the given file descriptor will be used to find the file to (re)open.

- Also new to openat2() is the OPENAT2_REGULAR flag, which will cause an open to fail if the target is not a regular file. The return code in the failure case is a new (to Linux) one: EFTYPE. This flag is meant to be a hardening feature to prevent programs from being manipulated into opening special files.