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flatpak/CVE-2023-28100-pre1.patch

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Fix CVE-2023-28100 and CVE-2023-28101 and Fix several memory leaks (cherry picked from commit 6fe17b7f232e7c9530c41cff1c634d3cbad5ef28)
2024-03-28 15:25:16 +08:00
From 4206d681c5c52691dec0074e3f8c32dab1953a94 Mon Sep 17 00:00:00 2001
From: Simon McVittie <smcv@collabora.com>
Date: Fri, 21 May 2021 17:41:31 +0100
Subject: [PATCH] test-context: Exercise some corner cases for merging
filesystems
Signed-off-by: Simon McVittie <smcv@collabora.com>
Co-authored-by: Alexander Larsson <alexl@redhat.com>
(cherry picked from commit fab0f8ed7c52fc58e6c550d123ede9621c760ca7)
[smcv: Also backport the scaffolding to create this test-case]
---
tests/Makefile.am.inc | 11 +-
tests/test-context.c | 343 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 353 insertions(+), 1 deletion(-)
create mode 100644 tests/test-context.c
diff --git a/tests/Makefile.am.inc b/tests/Makefile.am.inc
index 53d6403e4c..0fb650cb38 100644
--- a/tests/Makefile.am.inc
+++ b/tests/Makefile.am.inc
@@ -66,6 +66,10 @@ testcommon_LDADD = \
$(NULL)
testcommon_SOURCES = tests/testcommon.c
+test_context_CFLAGS = $(testcommon_CFLAGS)
+test_context_LDADD = $(testcommon_LDADD)
+test_context_SOURCES = tests/test-context.c
+
test_exports_CFLAGS = $(testcommon_CFLAGS)
test_exports_LDADD = $(testcommon_LDADD)
test_exports_SOURCES = tests/test-exports.c
@@ -252,7 +256,12 @@ test_scripts = ${TEST_MATRIX}
dist_test_scripts = ${TEST_MATRIX_DIST}
dist_installed_test_extra_scripts += ${TEST_MATRIX_EXTRA_DIST}
-test_programs = testlibrary testcommon test-exports
+test_programs = \
+ test-context \
+ test-exports \
+ testcommon \
+ testlibrary \
+ $(NULL)
test_extra_programs = tests/httpcache tests/test-update-portal tests/test-portal-impl tests/test-authenticator tests/list-unused
@VALGRIND_CHECK_RULES@
diff --git a/tests/test-context.c b/tests/test-context.c
new file mode 100644
index 0000000000..c128a83fae
--- /dev/null
+++ b/tests/test-context.c
@@ -0,0 +1,343 @@
+/*
+ * Copyright © 2021 Collabora Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdarg.h>
+
+#include <glib.h>
+#include "flatpak.h"
+#include "flatpak-context-private.h"
+#include "flatpak-run-private.h"
+#include "flatpak-utils-private.h"
+
+/* g_str_has_prefix as a GEqualFunc */
+static gboolean
+str_has_prefix (gconstpointer candidate,
+ gconstpointer pattern)
+{
+ return g_str_has_prefix (candidate, pattern);
+}
+
+static void context_parse_args (FlatpakContext *context,
+ ...) G_GNUC_NULL_TERMINATED;
+
+static void
+context_parse_args (FlatpakContext *context,
+ ...)
+{
+ g_autoptr(GError) local_error = NULL;
+ g_autoptr(GOptionContext) oc = NULL;
+ g_autoptr(GOptionGroup) group = NULL;
+ g_autoptr(GPtrArray) args = g_ptr_array_new_with_free_func (g_free);
+ g_auto(GStrv) argv = NULL;
+ const char *arg;
+ va_list ap;
+
+ g_ptr_array_add (args, g_strdup ("argv[0]"));
+
+ va_start (ap, context);
+
+ while ((arg = va_arg (ap, const char *)) != NULL)
+ g_ptr_array_add (args, g_strdup (arg));
+
+ va_end (ap);
+
+ g_ptr_array_add (args, NULL);
+ argv = (GStrv) g_ptr_array_free (g_steal_pointer (&args), FALSE);
+
+ oc = g_option_context_new ("");
+ group = flatpak_context_get_options (context);
+ g_option_context_add_group (oc, group);
+ g_option_context_parse_strv (oc, &argv, &local_error);
+ g_assert_no_error (local_error);
+}
+
+static void
+test_context_merge_fs (void)
+{
+ /*
+ * We want to arrive at the same result regardless of whether we:
+ * - start from lowest precedence, and successively merge higher
+ * precedences into it, discarding them when done;
+ * - successively merge highest precedence into second-highest, and
+ * then discard highest
+ */
+ enum { LOWEST_FIRST, HIGHEST_FIRST, INVALID } merge_order;
+
+ for (merge_order = LOWEST_FIRST; merge_order < INVALID; merge_order++)
+ {
+ g_autoptr(FlatpakContext) lowest = flatpak_context_new ();
+ g_autoptr(FlatpakContext) middle = flatpak_context_new ();
+ g_autoptr(FlatpakContext) highest = flatpak_context_new ();
+ gpointer value;
+
+ context_parse_args (lowest,
+ "--filesystem=/one",
+ NULL);
+ context_parse_args (middle,
+ "--nofilesystem=host:reset",
+ "--filesystem=/two",
+ NULL);
+ context_parse_args (highest,
+ "--nofilesystem=host",
+ "--filesystem=/three",
+ NULL);
+
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "host", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "host-reset", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "/one", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/two", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/three", NULL, NULL));
+
+ g_assert_true (g_hash_table_lookup_extended (middle->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_true (g_hash_table_lookup_extended (middle->filesystems, "host-reset", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (middle->filesystems, "/one", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (middle->filesystems, "/two", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_false (g_hash_table_lookup_extended (middle->filesystems, "/three", NULL, NULL));
+
+ g_assert_true (g_hash_table_lookup_extended (highest->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (highest->filesystems, "host-reset", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (highest->filesystems, "/one", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (highest->filesystems, "/two", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (highest->filesystems, "/three", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+
+ if (merge_order == LOWEST_FIRST)
+ {
+ flatpak_context_merge (lowest, middle);
+
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "host-reset", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/one", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "/two", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/three", NULL, NULL));
+
+ flatpak_context_merge (lowest, highest);
+ }
+ else
+ {
+ flatpak_context_merge (middle, highest);
+
+ g_assert_true (g_hash_table_lookup_extended (middle->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_true (g_hash_table_lookup_extended (middle->filesystems, "host-reset", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (middle->filesystems, "/one", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (middle->filesystems, "/two", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_true (g_hash_table_lookup_extended (middle->filesystems, "/three", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+
+ flatpak_context_merge (lowest, middle);
+ }
+
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "host-reset", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/one", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "/two", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "/three", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ }
+
+ for (merge_order = LOWEST_FIRST; merge_order < INVALID; merge_order++)
+ {
+ g_autoptr(FlatpakContext) lowest = flatpak_context_new ();
+ g_autoptr(FlatpakContext) mid_low = flatpak_context_new ();
+ g_autoptr(FlatpakContext) mid_high = flatpak_context_new ();
+ g_autoptr(FlatpakContext) highest = flatpak_context_new ();
+ g_autoptr(GError) local_error = NULL;
+ g_autoptr(GKeyFile) metakey = g_key_file_new ();
+ g_autoptr(GPtrArray) args = g_ptr_array_new_with_free_func (g_free);
+ g_autofree char *filesystems = NULL;
+ gpointer value;
+
+ context_parse_args (lowest,
+ "--filesystem=/one",
+ NULL);
+ context_parse_args (mid_low,
+ "--nofilesystem=host:reset",
+ "--filesystem=/two",
+ NULL);
+ context_parse_args (mid_high,
+ "--filesystem=host",
+ "--filesystem=/three",
+ NULL);
+ context_parse_args (highest,
+ "--nofilesystem=host",
+ "--filesystem=/four",
+ NULL);
+
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "host", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "host-reset", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "/one", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/two", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/three", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/four", NULL, NULL));
+
+ g_assert_true (g_hash_table_lookup_extended (mid_low->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_true (g_hash_table_lookup_extended (mid_low->filesystems, "host-reset", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (mid_low->filesystems, "/one", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (mid_low->filesystems, "/two", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_false (g_hash_table_lookup_extended (mid_low->filesystems, "/three", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (mid_low->filesystems, "/four", NULL, NULL));
+
+ g_assert_true (g_hash_table_lookup_extended (mid_high->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_false (g_hash_table_lookup_extended (mid_high->filesystems, "host-reset", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (mid_high->filesystems, "/one", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (mid_high->filesystems, "/two", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (mid_high->filesystems, "/three", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_false (g_hash_table_lookup_extended (mid_high->filesystems, "/four", NULL, NULL));
+
+ g_assert_true (g_hash_table_lookup_extended (highest->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (mid_high->filesystems, "host-reset", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (highest->filesystems, "/one", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (highest->filesystems, "/two", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (highest->filesystems, "/three", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (highest->filesystems, "/four", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+
+ if (merge_order == LOWEST_FIRST)
+ {
+ flatpak_context_merge (lowest, mid_low);
+
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "host-reset", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/one", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "/two", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/three", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/four", NULL, NULL));
+
+ flatpak_context_merge (lowest, mid_high);
+
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "host-reset", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/one", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "/two", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "/three", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/four", NULL, NULL));
+
+ flatpak_context_merge (lowest, highest);
+ }
+ else
+ {
+ flatpak_context_merge (mid_high, highest);
+
+ g_assert_true (g_hash_table_lookup_extended (mid_high->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (mid_high->filesystems, "host-reset", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (mid_high->filesystems, "/one", NULL, NULL));
+ g_assert_false (g_hash_table_lookup_extended (mid_high->filesystems, "/two", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (mid_high->filesystems, "/three", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_true (g_hash_table_lookup_extended (mid_high->filesystems, "/four", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+
+ flatpak_context_merge (mid_low, mid_high);
+
+ g_assert_true (g_hash_table_lookup_extended (mid_low->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_true (g_hash_table_lookup_extended (mid_low->filesystems, "host-reset", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (mid_low->filesystems, "/one", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (mid_low->filesystems, "/two", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_true (g_hash_table_lookup_extended (mid_low->filesystems, "/three", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_true (g_hash_table_lookup_extended (mid_low->filesystems, "/four", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+
+ flatpak_context_merge (lowest, mid_low);
+ }
+
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "host", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "host-reset", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_NONE);
+ g_assert_false (g_hash_table_lookup_extended (lowest->filesystems, "/one", NULL, NULL));
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "/two", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "/three", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+ g_assert_true (g_hash_table_lookup_extended (lowest->filesystems, "/four", NULL, &value));
+ g_assert_cmpint (GPOINTER_TO_INT (value), ==, FLATPAK_FILESYSTEM_MODE_READ_WRITE);
+
+ flatpak_context_save_metadata (lowest, FALSE, metakey);
+ filesystems = g_key_file_get_value (metakey,
+ FLATPAK_METADATA_GROUP_CONTEXT,
+ FLATPAK_METADATA_KEY_FILESYSTEMS,
+ &local_error);
+ g_assert_no_error (local_error);
+ g_test_message ("%s=%s", FLATPAK_METADATA_KEY_FILESYSTEMS, filesystems);
+ /* !host:reset is serialized first */
+ g_assert_true (g_str_has_prefix (filesystems, "!host:reset;"));
+ /* The rest are serialized in arbitrary order */
+ g_assert_nonnull (strstr (filesystems, ";!host;"));
+ g_assert_null (strstr (filesystems, "/one"));
+ g_assert_nonnull (strstr (filesystems, ";/two;"));
+ g_assert_nonnull (strstr (filesystems, ";/three;"));
+ g_assert_nonnull (strstr (filesystems, ";/four;"));
+
+ flatpak_context_to_args (lowest, args);
+ /* !host:reset is serialized first */
+ g_assert_cmpuint (args->len, >, 0);
+ g_assert_cmpstr (g_ptr_array_index (args, 0), ==,
+ "--nofilesystem=host:reset");
+ /* The rest are serialized in arbitrary order */
+ g_assert_true (g_ptr_array_find_with_equal_func (args, "--nofilesystem=host", g_str_equal, NULL));
+ g_assert_false (g_ptr_array_find_with_equal_func (args, "--filesystem=/one", str_has_prefix, NULL));
+ g_assert_false (g_ptr_array_find_with_equal_func (args, "--nofilesystem=/one", str_has_prefix, NULL));
+ g_assert_true (g_ptr_array_find_with_equal_func (args, "--filesystem=/two", g_str_equal, NULL));
+ g_assert_true (g_ptr_array_find_with_equal_func (args, "--filesystem=/three", g_str_equal, NULL));
+ g_assert_true (g_ptr_array_find_with_equal_func (args, "--filesystem=/four", g_str_equal, NULL));
+ }
+}
+
+int
+main (int argc, char *argv[])
+{
+ g_test_init (&argc, &argv, NULL);
+
+ g_test_add_func ("/context/merge-fs", test_context_merge_fs);
+
+ return g_test_run ();
+}
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