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build: container: Add #:host-uids argument to call-with-container.

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It's not always possible to map 65536 uids when creating a container as the
root user within another user namespace.  This is true when building Guix
within the build daemon's container.  By using a uid range of 1 by default,
even as the root user, the tests now pass.

* gnu/build/linux-container.scm (initialize-user-namespace, run-container):
  Add 'host-uids' argument.
  (call-with-container): Add #:host-uids keyword argument.
* tests/containers.scm ("container-excursion"): Update 'run-container' call.
This commit is contained in:
David Thompson
2015-08-01 21:04:31 -04:00
parent 8c812f2aee
commit 831bc1468e
2 changed files with 20 additions and 20 deletions
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tests/containers.scm
+1 -1
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@@ -102,7 +102,7 @@
(readlink (string-append "/proc/" pid "/ns/" ns)))
'("user" "ipc" "uts" "net" "pid" "mnt"))))
(let* ((pid (run-container root '() %namespaces container))
(let* ((pid (run-container root '() %namespaces 1 container))
(container-namespaces (namespaces pid))
(result
(begin