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| author | David Thompson <dthompson2@worcester.edu> | 2015-11-03 09:02:10 -0500 |
|---|---|---|
| committer | David Thompson <dthompson2@worcester.edu> | 2015-11-03 11:41:04 -0500 |
| commit | 00bfa7ea25b4612d730b057308b304d0131bee03 (patch) | |
| tree | 94ba11729f2f8108532bf69a5b2da3adff7bab02 | |
| parent | b7d48312bbfc7bdbb3895eb10edc352eeb555b98 (diff) | |
scripts: environment: Display friendly container error messages.
* guix/scripts/environment.scm (assert-container-features): New
procedure.
(guix-environment): Use it.
| -rw-r--r-- | guix/scripts/environment.scm | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/guix/scripts/environment.scm b/guix/scripts/environment.scm index 45b54a9297..97410f4e09 100644 --- a/guix/scripts/environment.scm +++ b/guix/scripts/environment.scm @@ -437,6 +437,21 @@ Otherwise, return the derivation for the Bash package." opts (alist-cons 'exec command opts))))) +(define (assert-container-features) + "Check if containers can be created and exit with an informative error +message if any test fails." + (unless (user-namespace-supported?) + (report-error (_ "cannot create container: user namespaces unavailable\n")) + (leave (_ "is your kernel version < 3.10?\n"))) + + (unless (unprivileged-user-namespace-supported?) + (report-error (_ "cannot create container: unprivileged user cannot create user namespaces\n")) + (leave (_ "please set /proc/sys/kernel/unprivileged_userns_clone to \"1\"\n"))) + + (unless (setgroups-supported?) + (report-error (_ "cannot create container: /proc/self/setgroups does not exist\n")) + (leave (_ "is your kernel version < 3.19?\n")))) + ;; Entry point. (define (guix-environment . args) (with-error-handling @@ -474,6 +489,9 @@ Otherwise, return the derivation for the Bash package." '())) inputs)) eq?))) + + (when container? (assert-container-features)) + (with-store store (run-with-store store (mlet* %store-monad ((inputs (lower-inputs |