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| author | Ludovic Courtès <ludo@gnu.org> | 2020-10-02 23:17:40 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2020-10-02 23:28:09 +0200 |
| commit | 0f53c801b91919380a924b402d1ff822bb1dc6ea (patch) | |
| tree | 428a6c2915344177a704d817796ffebdc9366536 | |
| parent | 8e1907a72430aa989125b053573ef0897c480697 (diff) | |
| download | guix-0f53c801b91919380a924b402d1ff822bb1dc6ea.tar.gz | |
environment: Provide /etc/hosts in containers without '--network'.
Fixes <https://bugs.gnu.org/43762>. * guix/scripts/environment.scm (launch-environment/container): Create /etc/hosts when NETWORK? is false. * tests/guix-environment-container.sh: Add "localhost" resolution test.
| -rw-r--r-- | guix/scripts/environment.scm | 7 | ||||
| -rw-r--r-- | tests/guix-environment-container.sh | 4 |
2 files changed, 11 insertions, 0 deletions
diff --git a/guix/scripts/environment.scm b/guix/scripts/environment.scm index e2e481dd02..9698111cd2 100644 --- a/guix/scripts/environment.scm +++ b/guix/scripts/environment.scm @@ -549,6 +549,13 @@ WHILE-LIST." (write-passwd (list passwd)) (write-group groups) + (unless network? + ;; When isolated from the network, provide a minimal /etc/hosts + ;; to resolve "localhost". + (call-with-output-file "/etc/hosts" + (lambda (port) + (display "127.0.0.1 localhost\n" port)))) + ;; For convenience, start in the user's current working ;; directory or, if unmapped, the home directory. (chdir (if map-cwd? diff --git a/tests/guix-environment-container.sh b/tests/guix-environment-container.sh index 040f32cce9..3674aa6026 100644 --- a/tests/guix-environment-container.sh +++ b/tests/guix-environment-container.sh @@ -44,6 +44,10 @@ else test $? = 42 fi +# Make sure "localhost" resolves. +guix environment --container --ad-hoc --bootstrap guile-bootstrap \ + -- guile -c '(exit (pair? (getaddrinfo "localhost" "80")))' + # Make sure '--preserve' is honored. result="`FOOBAR=42; export FOOBAR; guix environment -C --ad-hoc --bootstrap \ guile-bootstrap -E ^FOO -- guile -c '(display (getenv \"FOOBAR\"))'`" |