Bug 1802018
| Summary: | glibc: Implement /proc-based fchmodat, lchmod emulation | |||
|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Florian Weimer <fweimer> | |
| Component: | glibc | Assignee: | Florian Weimer <fweimer> | |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | |
| Severity: | unspecified | Docs Contact: | ||
| Priority: | unspecified | |||
| Version: | 33 | CC: | aoliva, arjun.is, codonell, dj, fweimer, law, mfabian, pfrankli, rth, siddhesh, sipoyare | |
| Target Milestone: | --- | |||
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | glibc-2.31.9000-1.fc33 | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1810141 (view as bug list) | Environment: | ||
| Last Closed: | 2021-05-18 13:16:26 UTC | Type: | Bug | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 1810141 | |||
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Description
Florian Weimer
2020-02-12 07:50:15 UTC
We're hitting an XFS bug in this area: https://www.sourceware.org/ml/libc-alpha/2020-02/msg00467.html The kernel bug is worked around with this glibc commit:
commit a492b1e5ef7ab50c6fdd4e4e9879ea5569ab0a6c
Author: Florian Weimer <fweimer>
Date: Tue Feb 18 17:52:27 2020 +0100
Linux: Work around kernel bugs in chmod on /proc/self/fd paths [BZ #14578]
It appears that the ability to change symbolic link modes through such
paths is unintended. On several file systems, the operation fails with
EOPNOTSUPP, even though the symbolic link permissions are updated.
The expected behavior is a failure to update the permissions, without
file system changes.
Reviewed-by: Matheus Castanho <msc.com>
I'd really like to wait with the backports until the kernel system call has landed. I've pinged the most recent submission. This bug appears to have been reported against 'rawhide' during the Fedora 33 development cycle. Changing version to 33. Rick Felker posted an implementation of the required system call: https://lore.kernel.org/linux-api/20200910142335.GG3265@brightrain.aerifal.cx/ Rich Felker's patch was rejected because it did not come with a test case. We probably need to contribute that test case so that the kernel change can move forward. Fixed by: * Wed Feb 26 2020 Patsy Franklin <patsy> - 2.31.9000-1 - Auto-sync with upstream branch master, commit 758599bc9dcc5764e862bd9e1613c5d1e6efc5d3. |