| Summary: | Implement openat2 intercept in pseudo | ||
|---|---|---|---|
| Product: | [Yocto Project Subprojects] Pseudo | Reporter: | Khem Raj <raj.khem> |
| Component: | pseudo | Assignee: | Mark Hatle <mark.hatle> |
| Status: | RESOLVED FIXED | QA Contact: | |
| Severity: | normal | ||
| Priority: | Medium+ | CC: | ccasciato, meta.mr.watcher, meta.watcher, paul, randy.macleod, richard.purdie, yp.pseudo.watcher, yp.watcher |
| Version: | unspecified | ||
| Target Milestone: | 6.0 M2 | ||
| Hardware: | All | ||
| OS: | Multiple | ||
| Whiteboard: | |||
| OS type for building Yocto: | --- | Type of Regression: | --- |
| Verified: | Documentation change: | No (bug/feature does not impact docs) | |
|
Description
Khem Raj
2026-01-07 07:45:09 UTC
For tar on stream9 we need to intercept the syscall too: https://git.yoctoproject.org/pseudo/tree/ports/linux/guts/syscall.c https://git.yoctoproject.org/pseudo/tree/ports/linux/guts/syscall.c psseudo master has a syscall intercept for SYS_openat2 that returns ENOSYS. This should unblock immediate users. Additionally, I've adapted 'openat' as a possible 'openat2' implementation. See: https://git.yoctoproject.org/pseudo/commit/?h=fray/master-wip&id=022e103f0b1223fb6557d730471196cb2223ac27 This is a first version. Once the function (not syscall) is mainstream, we'll likely want to have 'openat' call 'openat2', as well and adjust it to pass through whatever openat2 interface glibc ends up with, but until then this SHOULD work and is good enough for testing purposes. Lower to M+. We've got a patch to return ENOSYS for now and there is a plan for a proper implementation. Based on Zoltan's testing, it looks like we'll need full openat2() handling to build on Fedora 44 [1]. [1]: https://lore.kernel.org/openembedded-core/1b979680925d535d3cd344a8b736b8f862d52498.camel@pbarker.dev/ We could use the gnulib openat2() implementation, relying on the fact that it calls openat() which we already handle. https://gitweb.git.savannah.gnu.org/gitweb/?p=gnulib.git;a=blob;f=lib/openat2.c;h=2be62c921c5b90e8b0d528b33501ed3e1f2d7f92;hb=HEAD https://git.yoctoproject.org/pseudo/log/?h=rpurdie/openat2 has a one idea of how we could make it work, I found and worked around the issue in Mark's implementation. I am worried there may be chroot issues with that change though. https://git.yoctoproject.org/pseudo/commit/?id=6533a536f93a13ec39e5fd42e3385798729e093f and following commit. |