| Summary: | Incorrect timestamps on unzipped files. | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Chris Karel <chris.karel> | ||||
| Component: | unzip | Assignee: | Petr Stodulka <pstodulk> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | low | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 25 | CC: | jirka, pstodulk | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | unzip-6.0-32.fc25 unzip-6.0-34.fc26 unzip-6.0-34.fc27 | Doc Type: | If docs needed, set a value | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2017-07-19 16:22:03 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: | |||||
| Attachments: |
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Description
Chris Karel
2017-05-18 01:59:39 UTC
Although `zip` stores both the legacy ZIP "DOS" timestamp (with 2-second precision) and an extension block with proper Unix timestamp, `unzip` is not using the latter during extraction because of a bug. Apart from the possible 1 second difference this has also negative implications when working across multiple time zones. Because the legacy timestamp uses local time zone, when e.g. someone packs source code in UTC+2 and someone else uses it later in UTC-8, their project will be always rebuilding for the next 10 hours, because `make` thinks the sources are still newer than the build outputs. Unfortunately it seems the upstream Info-ZIP folks still don't have anything like a repo to check for updates since 2009, but luckily Debian already has a patch for this: http://sources.debian.net/patches/unzip/6.0-21/17-restore-unix-timestamps-accurately.patch/ I have verified their version 6.0-21 does the right thing. Thanks for your consideration. Thanks Jirka for your time & investigation. Yes, repositories of (un)zip are not public and probably will not be. unzip-6.0-34.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2017-28fd8ef47d unzip-6.0-32.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2017-077cbd8617 unzip-6.0-32.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-077cbd8617 unzip-6.0-34.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-28fd8ef47d unzip-6.0-34.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report. unzip-6.0-32.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report. |