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proc #465

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opened 2026-05-05 05:54:52 -06:00 by gitea-mirror · 4 comments

gitea-mirror commented

2026-05-05 05:54:52 -06:00

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Originally created by @Fred-Barclay on GitHub (Aug 1, 2016).
Original GitHub issue: https://github.com/netblue30/firejail/issues/677

When I try firejail --blacklist=/proc and then ls /proc there are still 58 files and directories visible inside the sandbox. It's certainly a lot fewer than the 244 files/directories that are visible outside the sandbox, but is this normal/expected?
Blacklisting practically any other directory hides the contents entirely, unless I blacklist something important like /bin which won't allow /bin/bash to run inside firejail.

Originally created by @Fred-Barclay on GitHub (Aug 1, 2016). Original GitHub issue: https://github.com/netblue30/firejail/issues/677 When I try `firejail --blacklist=/proc` and then `ls /proc` there are still 58 files and directories visible inside the sandbox. It's certainly a lot fewer than the 244 files/directories that are visible outside the sandbox, but is this normal/expected? Blacklisting practically any other directory hides the contents entirely, unless I blacklist something important like /bin which won't allow /bin/bash to run inside firejail.

gitea-mirror

2026-05-05 05:54:52 -06:00

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gitea-mirror commented

2026-05-05 05:54:59 -06:00

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@reinerh commented on GitHub (Aug 1, 2016):

A lot of /proc files are actually needed by many programs to work correctly.

@reinerh commented on GitHub (Aug 1, 2016): A lot of /proc files are actually needed by many programs to work correctly.

gitea-mirror commented

2026-05-05 05:55:02 -06:00

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@netblue30 commented on GitHub (Aug 3, 2016):

Fixed. Keep an eye on closing the sandbox, my monitoring program depends on reading /proc to see if the sandbox is still alive. You'll get some error messages when you close the program, just disregard them for now.

@netblue30 commented on GitHub (Aug 3, 2016): Fixed. Keep an eye on closing the sandbox, my monitoring program depends on reading /proc to see if the sandbox is still alive. You'll get some error messages when you close the program, just disregard them for now.

gitea-mirror commented

2026-05-05 05:55:04 -06:00

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@Fred-Barclay commented on GitHub (Aug 11, 2016):

Forgot to say earlier... thanks, mate! 👍

@Fred-Barclay commented on GitHub (Aug 11, 2016): Forgot to say earlier... thanks, mate! :+1:

gitea-mirror commented

2026-05-05 05:55:07 -06:00

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@netblue30 commented on GitHub (Aug 11, 2016):

No problem.

@netblue30 commented on GitHub (Aug 11, 2016): No problem.

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[GH-ISSUE #677] --blacklist=/proc does not blacklist all of /proc #465

[GH-ISSUE #677] `--blacklist=/proc` does not blacklist all of /proc #465