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linux-container: Reset jailed root permissions.

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* gnu/build/linux-container.scm (mount-file-systems): Add 'chmod' call.
* tests/containers.scm
("call-with-container, mnt namespace, root permissions"): New test.
This commit is contained in:
Jelle Licht 2020-09-29 23:25:13 +02:00
parent 7dc19c33fc
commit e748183538
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GPG key ID: DA4597F947B41025
2 changed files with 10 additions and 1 deletions
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3
gnu/build/linux-container.scm
View file

@ -170,7 +170,8 @@ (define* (mount* source target type #:optional (flags 0) options
(pivot-root root put-old)
(chdir "/")
(umount "real-root" MNT_DETACH)
(rmdir "real-root")))
(rmdir "real-root")
(chmod "/" #o755)))
(define* (initialize-user-namespace pid host-uids
#:key (guest-uid 0) (guest-gid 0))

8
tests/containers.scm
View file

@ -133,6 +133,14 @@ (define (skip-if-unsupported)
(lambda ()
(primitive-exit 0)))))
(skip-if-unsupported)
(test-assert "call-with-container, mnt namespace, root permissions"
(zero?
(call-with-container '()
(lambda ()
(assert-exit (= #o755 (stat:perms (lstat "/")))))
#:namespaces '(user mnt))))
(skip-if-unsupported)
(test-assert "container-excursion"
(call-with-temporary-directory