exec: support --preserve-fds#2426
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: giuseppe The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
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I think flatpak passes in the specific numbers of the FDs in question, and allows the flag to be specified multiple times. Not sure if compatibility with them is important here.
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I think we should rather look at what runc already does, it supports --preserve-fds, but only for create/run at the moment.
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If this is runc's behavior, matching it SGTM
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Can you use os.NewFile here, and directly pass the FD number? The docs say it will ensure a file wrapping a valid FD is returned, so we can use it to check if the FD in question is present
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I think it means it checks only that once casted it is not <0:
fmt.Printf("got: %v\n", os.NewFile(1, "f1"))
fmt.Printf("got: %v\n", os.NewFile(100000000000, "f2"))
fmt.Printf("got: %v\n", os.NewFile(9223372036854775808, "f3"))
I get:
got: &{0xc00006c180}
got: &{0xc00006c1e0}
got: <nil>
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Ah, so it's fake checking and the stdlib docs are lying, then.
It would have been neater than checking /proc, but if we can't do it this works fine.
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/retest |
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Do we no longer need this? |
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we do, not sure how it got closed |
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@giuseppe Does this require a new version of runc? |
yes, the PR implementing it was merged yesterday |
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Ok so lets wait for v1.1 is shipped and then we can put this in master, and start moving runc through the process of getting it released. |
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Needs to update RELEASE_NOTES.md with changes |
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Nevermind the noise, don't bother with release notes |
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☔ The latest upstream changes (presumably #2487) made this pull request unmergeable. Please resolve the merge conflicts. |
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I'm ready to merge this once the conflicts are fixed |
Allow to pass additional FDs to the process being executed. Closes: containers#2372 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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LGTM |
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@mheon is this good to go? |
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/lgtm |
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Allow to pass additional FDs to the process being executed.
Closes: #2372
Depends on: opencontainers/runc#1995
Signed-off-by: Giuseppe Scrivano gscrivan@redhat.com