aboutsummaryrefslogtreecommitdiff
path: root/tests/guix-pack-relocatable.sh
blob: 2fc9fde0bd985bf82b92c08261e450c026f7e3f8 (about) (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
# GNU Guix --- Functional package management for GNU
# Copyright © 2018, 2019, 2020, 2023 Ludovic Courtès <ludo@gnu.org>
# Copyright © 2020 Eric Bavier <bavier@posteo.net>
#
# 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 the 'guix pack --relocatable' using the external store, if any.
#

guix pack --version

# 'guix pack --relocatable' requires a C compiler and libc.a, which our
# bootstrap binaries don't provide.  To make the test relatively inexpensive,
# run it on the user's global store if possible, on the grounds that binaries
# may already be there or can be built or downloaded inexpensively.

storedir="`guile -c '(use-modules (guix config))(display %storedir)'`"
localstatedir="`guile -c '(use-modules (guix config))(display %localstatedir)'`"
NIX_STORE_DIR="$storedir"
GUIX_DAEMON_SOCKET="$localstatedir/guix/daemon-socket/socket"
export NIX_STORE_DIR GUIX_DAEMON_SOCKET

if ! guile -c '(use-modules (guix)) (exit (false-if-exception (open-connection)))'
then
    exit 77
fi

# Attempt to run the given command in a namespace where the store is
# invisible.  This makes sure the presence of the store does not hide
# problems.
run_without_store ()
{
    if unshare -r true		# Are user namespaces supported?
    then
	# Run that relocatable executable in a user namespace where we "erase"
	# the store by mounting an empty file system on top of it.  That way,
	# we exercise the wrapper code that creates the user namespace and
	# bind-mounts the store.
	unshare -mrf sh -c 'mount -t tmpfs -o ro none "$NIX_STORE_DIR"; '"$*"
    else
	# Run the relocatable program in the current namespaces.  This is a
	# weak test because we're going to access store items from the host
	# store.
	sh -c "$*"
    fi
}

# Wait for the given file to show up.  Error out if it doesn't show up in a
# timely fashion.
wait_for_file ()
{
    i=0
    while ! test -f "$1" && test $i -lt 20
    do
	sleep 0.3
	i=`expr $i + 1`
    done
    test -f "$1"
}

test_directory="`mktemp -d`"
export test_directory
trap 'chmod -Rf +w "$test_directory"; rm -rf "$test_directory"' EXIT

if unshare -r true
then
    # Test the 'userns' execution engine.
    tarball="`guix pack -R -S /Bin=bin sed`"
    (cd "$test_directory"; tar xvf "$tarball")

    chmod +w "$test_directory"
    run_without_store "$test_directory/Bin/sed" --version > "$test_directory/output"
    grep 'GNU sed' "$test_directory/output"

    # Same with an explicit engine.
    run_without_store GUIX_EXECUTION_ENGINE="userns" \
		      "$test_directory/Bin/sed" --version > "$test_directory/output"
    grep 'GNU sed' "$test_directory/output"

    # Check whether the exit code is preserved.
    run_without_store "$test_directory/Bin/sed" --does-not-exist && false

    chmod -Rf +w "$test_directory"; rm -rf "$test_directory"/*
else
    echo "'userns' execution tests skipped" >&2
fi

case "`uname -m`" in
    x86_64|i?86)
	# Try '-RR' and PRoot.
	tarball="`guix pack -RR -S /Bin=bin sed`"
	tar tvf "$tarball" | grep /bin/proot
	(cd "$test_directory"; tar xf "$tarball")
	chmod +w "$test_directory"
	run_without_store GUIX_EXECUTION_ENGINE="proot" \
	"$test_directory/Bin/sed" --version > "$test_directory/output"
	grep 'GNU sed' "$test_directory/output"

	# Now with fakechroot.
	run_without_store GUIX_EXECUTION_ENGINE="fakechroot" \
	"$test_directory/Bin/sed" --version > "$test_directory/output"
	grep 'GNU sed' "$test_directory/output"
	unset GUIX_EXECUTION_ENGINE

	chmod -Rf +w "$test_directory"; rm -rf "$test_directory"/*

	if unshare -r true
	then
	    # Check whether the store contains everything it should.  Check
	    # once when erasing $STORE_PARENT ("/gnu") and once when erasing
	    # $NIX_STORE_DIR ("/gnu/store").
	    tarball="`guix pack -RR -S /bin=bin bash-minimal`"
	    (cd "$test_directory"; tar xf "$tarball")

	    STORE_PARENT="`dirname $NIX_STORE_DIR`"
	    export STORE_PARENT

	    for engine in userns proot fakechroot
	    do
		for i in $(guix gc -R $(guix build bash-minimal | grep -v -e '-doc$'))
		do
		    unshare -mrf sh -c "mount -t tmpfs none \"$NIX_STORE_DIR\"; GUIX_EXECUTION_ENGINE=$engine $test_directory/bin/sh -c 'echo $NIX_STORE_DIR/*'" | grep $(basename $i)
		    unshare -mrf sh -c "mount -t tmpfs none \"$STORE_PARENT\";  GUIX_EXECUTION_ENGINE=$engine $test_directory/bin/sh -c 'echo $NIX_STORE_DIR/*'" | grep $(basename $i)
		done
	    done

	    chmod -Rf +w "$test_directory"; rm -rf "$test_directory"/*
	fi
	;;
    *)
	echo "skipping PRoot and Fakechroot tests" >&2
	;;
esac

if unshare -r true
then
    # Check what happens if the wrapped binary forks and leaves child
    # processes behind, like a daemon.  The root file system should remain
    # available to those child processes.  See <https://bugs.gnu.org/44261>.
    cat > "$test_directory/manifest.scm" <<EOF
(use-modules (guix))

(define daemon
  (program-file "daemon"
                #~(begin
                    (use-modules (ice-9 match)
                                 (ice-9 ftw))

                    (call-with-output-file "parent-store"
                      (lambda (port)
                        (write (scandir (ungexp (%store-prefix)))
                               port)))

                    (match (primitive-fork)
                      (0 (sigaction SIGHUP (const #t))
                         (call-with-output-file "pid"
                           (lambda (port)
                             (display (getpid) port)))
                         (pause)
                         (call-with-output-file "child-store"
                           (lambda (port)
                             (write (scandir (ungexp (%store-prefix)))
                                    port))))
                      (_ #t)))))

(define package
  (computed-file "package"
                 #~(let ((out (ungexp output)))
                     (mkdir out)
                     (mkdir (string-append out "/bin"))
                     (symlink (ungexp daemon)
                              (string-append out "/bin/daemon")))))

(manifest (list (manifest-entry
                  (name "daemon")
                  (version "0")
                  (item package))))
EOF

    tarball="$(guix pack -S /bin=bin -R -m "$test_directory/manifest.scm")"
    (cd "$test_directory"; tar xf "$tarball")

    # Run '/bin/daemon', which forks, then wait for the child, send it SIGHUP
    # so that it dumps its view of the store, and make sure the child and
    # parent both see the same store contents.
    chmod +w "$test_directory"
    (cd "$test_directory"; run_without_store ./bin/daemon)
    wait_for_file "$test_directory/pid"
    kill -HUP $(cat "$test_directory/pid")
    wait_for_file "$test_directory/child-store"
    diff -u "$test_directory/parent-store" "$test_directory/child-store"

    chmod -Rf +w "$test_directory"; rm -rf "$test_directory"/*
fi

# Ensure '-R' works with outputs other than "out".
tarball="`guix pack -R -S /share=share groff:doc`"
(cd "$test_directory"; tar xf "$tarball")
test -d "$test_directory/share/doc/groff/html"
chmod -Rf +w "$test_directory"; rm -rf "$test_directory"/*

# Ensure '-R' applies to propagated inputs.  Failing to do that, it would fail
# with a profile collision error in this case because 'python-scipy'
# propagates 'python-numpy'.  See <https://bugs.gnu.org/42510>.
guix pack -RR python-numpy python-scipy --no-grafts -n

# Check that packages that mix executable and support files (e.g. git) in the
# "binary" directories still work after wrapped.
cat >"$test_directory/manifest.scm" <<'EOF'
(use-modules (guix) (guix profiles) (guix search-paths)
             (gnu packages bootstrap))
(manifest
 (list (manifest-entry
        (name "test") (version "0")
        (item (file-union "test"
                          `(("bin/hello"
                             ,(program-file
                               "hello"
                               #~(begin
                                   (add-to-load-path (getenv "HELLO_EXEC_PATH"))
                                   (display (load-from-path "msg"))(newline))
                               #:guile %bootstrap-guile))
                            ("libexec/hello/msg"
                             ,(plain-file "msg" "42")))))
        (search-paths
         (list (search-path-specification
                (variable "HELLO_EXEC_PATH")
                (files '("libexec/hello"))
                (separator #f)))))))
EOF
tarball="`guix pack -RR -S /opt= -m $test_directory/manifest.scm`"
(cd "$test_directory"; tar xvf "$tarball")
chmod +w "$test_directory"
( export GUIX_PROFILE=$test_directory/opt
  . $GUIX_PROFILE/etc/profile
  run_without_store "$test_directory/opt/bin/hello" > "$test_directory/output" )
cat "$test_directory/output"
test "`cat $test_directory/output`" = "42"