guix-play/tests/guix-environment-container.sh
Ludovic Courtès c06f6db7a4
container: Gracefully report mount errors in the child process.
Fixes <http://bugs.gnu.org/23306>.

* gnu/build/linux-container.scm (run-container): Use 'socketpair'
instead of 'pipe'.  Rename 'in' to 'child' and 'out' to 'parent'.  Send
a 'ready message or an exception argument list from the child to the
parent; adjust the parent accordingly.
* tests/containers.scm ("call-with-container, mnt namespace, wrong bind
mount"): New test.
* tests/guix-environment-container.sh: Add test with
--expose=/does-not-exist.
2016-05-31 00:11:04 +02:00

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# GNU Guix --- Functional package management for GNU
# Copyright © 2015 David Thompson <davet@gnu.org>
#
# This file is part of GNU Guix.
#
# GNU Guix is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or (at
# your option) any later version.
#
# GNU Guix is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
#
# Test 'guix environment'.
#
set -e
guix environment --version
if ! guile -c '((@@ (guix scripts environment) assert-container-features))'
then
# User containers are not supported; skip this test.
exit 77
fi
tmpdir="t-guix-environment-$$"
trap 'rm -r "$tmpdir"' EXIT
mkdir "$tmpdir"
# Make sure the exit value is preserved.
if guix environment --container --ad-hoc --bootstrap guile-bootstrap \
-- guile -c '(exit 42)'
then
false
else
test $? = 42
fi
# Make sure file-not-found errors in mounts are reported.
if guix environment --container --ad-hoc --bootstrap guile-bootstrap \
--expose=/does-not-exist -- guile -c 1 2> "$tmpdir/error"
then
false
else
grep "/does-not-exist" "$tmpdir/error"
grep "[Nn]o such file" "$tmpdir/error"
fi
# Make sure that the right directories are mapped.
mount_test_code="
(use-modules (ice-9 rdelim)
(ice-9 match)
(srfi srfi-1))
(define mappings
(filter-map (lambda (line)
(match (string-split line #\space)
;; Empty line.
((\"\") #f)
;; Ignore these types of file systems.
((_ _ (or \"tmpfs\" \"proc\" \"sysfs\" \"devtmpfs\"
\"devpts\" \"cgroup\" \"mqueue\") _ _ _)
#f)
((_ mount _ _ _ _)
mount)))
(string-split (call-with-input-file \"/proc/mounts\" read-string)
#\newline)))
(for-each (lambda (mount)
(display mount)
(newline))
mappings)"
guix environment --container --ad-hoc --bootstrap guile-bootstrap \
-- guile -c "$mount_test_code" > $tmpdir/mounts
cat "$tmpdir/mounts"
test `wc -l < $tmpdir/mounts` -eq 4
current_dir="`cd $PWD; pwd -P`"
grep -e "$current_dir$" $tmpdir/mounts # current directory
grep $(guix build guile-bootstrap) $tmpdir/mounts
grep -e "$NIX_STORE_DIR/.*-bash" $tmpdir/mounts # bootstrap bash
rm $tmpdir/mounts
abnormal_exit_code="
(use-modules (system foreign))
;; Purposely make Guile crash with a segfault. :)
(pointer->string (make-pointer 123) 123)"
if guix environment --bootstrap --container \
--ad-hoc guile-bootstrap -- guile -c "$abnormal_exit_code"
then false;
else
test $? -gt 127
fi