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Some files in `/sys/devices/virtual/dmi/id/`, such as `product_serial`, are only readable by root. `fileexists()` let `readfile()` run anyway, so unprivileged agents logged a permission denied error. On 3.22.0 and later, `isreadable()` guards the read instead. Changelog: Title Signed-off-by: Lars Erik Wik <lars.erik.wik@northern.tech>
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@cf-bottom Jenkins please :) |
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Alright, I triggered a build: Jenkins: https://ci.cfengine.com/job/pr-pipeline/15030/ Packages: http://buildcache.cfengine.com/packages/testing-pr/jenkins-pr-pipeline-15030/ |
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@cf-bottom Jenkins please :) |
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Alright, I triggered a build: Jenkins: https://ci.cfengine.com/job/pr-pipeline/15038/ Packages: http://buildcache.cfengine.com/packages/testing-pr/jenkins-pr-pipeline-15038/ |
larsewi
marked this pull request as ready for review
November 9, 2026 13:19
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/sys/devices/virtual/dmi/id/, such asproduct_serial, are only readable by root. Thefileexists()guard letreadfile()run anyway, so unprivileged agents loggedCfReadFile: Error while reading file '/sys/devices/virtual/dmi/id/product_serial' (Permission denied).product_serial(e.g. the enterprisemasterfiles_acceptance_testsjob).isreadable(), like/sys/hypervisor/uuidfurther up. Older agents keepfileexists().🤖 Generated with Claude Code