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Expand test coverage for G_SPAWN_SEARCH_PATH

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Signed-off-by: Simon McVittie <smcv@collabora.com>
This commit is contained in:
Simon McVittie 2021-01-31 14:01:06 +00:00
parent e864c6577a
commit a85c126602
2 changed files with 215 additions and 0 deletions
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15
glib/tests/spawn-path-search-helper.c
View File

@ -55,6 +55,7 @@ main (int argc,
gboolean search_path = FALSE;
gboolean search_path_from_envp = FALSE;
gboolean slow_path = FALSE;
gboolean unset_path_in_envp = FALSE;
gchar *chdir_child = NULL;
gchar *set_path_in_envp = NULL;
gchar **envp = NULL;
@ -72,6 +73,9 @@ main (int argc,
{ "set-path-in-envp", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_FILENAME, &set_path_in_envp,
"Set PATH in specified environment to this value", "PATH", },
{ "unset-path-in-envp", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &unset_path_in_envp,
"Unset PATH in specified environment", NULL },
{ "slow-path", '\0',
G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE, &slow_path,
"Use a child-setup function to avoid the posix_spawn fast path", NULL },
@ -102,9 +106,20 @@ main (int argc,
envp = g_get_environ ();
if (set_path_in_envp != NULL && unset_path_in_envp)
{
g_set_error (&error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
"Cannot both set PATH and unset it");
ret = 2;
goto out;
}
if (set_path_in_envp != NULL)
envp = g_environ_setenv (envp, "PATH", set_path_in_envp, TRUE);
if (unset_path_in_envp)
envp = g_environ_unsetenv (envp, "PATH");
if (search_path)
spawn_flags |= G_SPAWN_SEARCH_PATH;

200
glib/tests/spawn-path-search.c
View File

@ -239,6 +239,200 @@ test_search_path_ambiguous (void)
g_ptr_array_unref (argv);
}
static void
test_search_path_fallback_in_environ (void)
{
GPtrArray *argv = g_ptr_array_new_with_free_func (g_free);
gchar *here = g_test_build_filename (G_TEST_BUILT, ".", NULL);
gchar *subdir = g_test_build_filename (G_TEST_BUILT, "path-test-subdir", NULL);
gchar **envp = g_get_environ ();
gchar *out = NULL;
gchar *err = NULL;
GError *error = NULL;
int wait_status = -1;
g_test_summary ("With G_SPAWN_SEARCH_PATH but no PATH, a fallback is used.");
/* We can't make a meaningful assertion about what the fallback *is*,
* but we can assert that it *includes* the current working directory. */
if (g_file_test ("/usr/bin/spawn-test-helper", G_FILE_TEST_IS_EXECUTABLE) ||
g_file_test ("/bin/spawn-test-helper", G_FILE_TEST_IS_EXECUTABLE))
{
g_test_skip ("Not testing fallback with unknown spawn-test-helper "
"executable in /usr/bin:/bin");
return;
}
envp = g_environ_unsetenv (envp, "PATH");
g_ptr_array_add (argv,
g_test_build_filename (G_TEST_BUILT, "spawn-path-search-helper", NULL));
g_ptr_array_add (argv, g_strdup ("--search-path"));
g_ptr_array_add (argv, g_strdup ("--set-path-in-envp"));
g_ptr_array_add (argv, g_strdup (subdir));
g_ptr_array_add (argv, g_strdup ("--"));
g_ptr_array_add (argv, g_strdup ("spawn-test-helper"));
g_ptr_array_add (argv, NULL);
g_spawn_sync (here,
(char **) argv->pdata,
envp,
G_SPAWN_DEFAULT,
NULL, /* child setup */
NULL, /* user data */
&out,
&err,
&wait_status,
&error);
g_assert_no_error (error);
g_test_message ("%s", out);
g_test_message ("%s", err);
g_assert_nonnull (strstr (err, "this is spawn-test-helper from glib/tests"));
#ifdef G_OS_UNIX
g_assert_true (WIFEXITED (wait_status));
g_assert_cmpint (WEXITSTATUS (wait_status), ==, 0);
#endif
g_strfreev (envp);
g_free (here);
g_free (subdir);
g_free (out);
g_free (err);
g_ptr_array_unref (argv);
}
static void
test_search_path_fallback_in_envp (void)
{
GPtrArray *argv = g_ptr_array_new_with_free_func (g_free);
gchar *here = g_test_build_filename (G_TEST_BUILT, ".", NULL);
gchar *subdir = g_test_build_filename (G_TEST_BUILT, "path-test-subdir", NULL);
gchar **envp = g_get_environ ();
gchar *out = NULL;
gchar *err = NULL;
GError *error = NULL;
int wait_status = -1;
g_test_summary ("With G_SPAWN_SEARCH_PATH_FROM_ENVP but no PATH, a fallback is used.");
/* We can't make a meaningful assertion about what the fallback *is*,
* but we can assert that it *includes* the current working directory. */
if (g_file_test ("/usr/bin/spawn-test-helper", G_FILE_TEST_IS_EXECUTABLE) ||
g_file_test ("/bin/spawn-test-helper", G_FILE_TEST_IS_EXECUTABLE))
{
g_test_skip ("Not testing fallback with unknown spawn-test-helper "
"executable in /usr/bin:/bin");
return;
}
envp = g_environ_setenv (envp, "PATH", subdir, TRUE);
g_ptr_array_add (argv,
g_test_build_filename (G_TEST_BUILT, "spawn-path-search-helper", NULL));
g_ptr_array_add (argv, g_strdup ("--search-path-from-envp"));
g_ptr_array_add (argv, g_strdup ("--unset-path-in-envp"));
g_ptr_array_add (argv, g_strdup ("--"));
g_ptr_array_add (argv, g_strdup ("spawn-test-helper"));
g_ptr_array_add (argv, NULL);
g_spawn_sync (here,
(char **) argv->pdata,
envp,
G_SPAWN_DEFAULT,
NULL, /* child setup */
NULL, /* user data */
&out,
&err,
&wait_status,
&error);
g_assert_no_error (error);
g_test_message ("%s", out);
g_test_message ("%s", err);
g_assert_nonnull (strstr (err, "this is spawn-test-helper from glib/tests"));
#ifdef G_OS_UNIX
g_assert_true (WIFEXITED (wait_status));
g_assert_cmpint (WEXITSTATUS (wait_status), ==, 0);
#endif
g_strfreev (envp);
g_free (here);
g_free (subdir);
g_free (out);
g_free (err);
g_ptr_array_unref (argv);
}
static void
test_search_path_heap_allocation (void)
{
GPtrArray *argv = g_ptr_array_new_with_free_func (g_free);
/* Must be longer than the arbitrary 4000 byte limit for stack allocation
* in gspawn.c */
char placeholder[4096];
gchar *here = g_test_build_filename (G_TEST_BUILT, ".", NULL);
gchar *subdir = g_test_build_filename (G_TEST_BUILT, "path-test-subdir", NULL);
gchar *long_dir = NULL;
gchar *long_path = NULL;
gchar **envp = g_get_environ ();
gchar *out = NULL;
gchar *err = NULL;
GError *error = NULL;
int wait_status = -1;
gsize i;
memset (placeholder, '_', sizeof (placeholder));
/* Force search_path_buffer to be heap-allocated */
long_dir = g_test_build_filename (G_TEST_BUILT, "path-test-subdir", placeholder, NULL);
long_path = g_strjoin (G_SEARCHPATH_SEPARATOR_S, subdir, long_dir, NULL);
envp = g_environ_setenv (envp, "PATH", long_path, TRUE);
g_ptr_array_add (argv,
g_test_build_filename (G_TEST_BUILT, "spawn-path-search-helper", NULL));
g_ptr_array_add (argv, g_strdup ("--search-path"));
g_ptr_array_add (argv, g_strdup ("--"));
g_ptr_array_add (argv, g_strdup ("spawn-test-helper"));
/* Add enough arguments to make argv longer than the arbitrary 4000 byte
* limit for stack allocation in gspawn.c.
* This assumes sizeof (char *) >= 4. */
for (i = 0; i < 1001; i++)
g_ptr_array_add (argv, g_strdup ("_"));
g_ptr_array_add (argv, NULL);
g_spawn_sync (here,
(char **) argv->pdata,
envp,
G_SPAWN_DEFAULT,
NULL, /* child setup */
NULL, /* user data */
&out,
&err,
&wait_status,
&error);
g_assert_no_error (error);
g_test_message ("%s", out);
g_test_message ("%s", err);
g_assert_nonnull (strstr (err, "this is spawn-test-helper from path-test-subdir"));
#ifdef G_OS_UNIX
g_assert_true (WIFEXITED (wait_status));
g_assert_cmpint (WEXITSTATUS (wait_status), ==, 5);
#endif
g_strfreev (envp);
g_free (here);
g_free (subdir);
g_free (out);
g_free (err);
g_ptr_array_unref (argv);
}
int
main (int argc,
char **argv)
@ -249,6 +443,12 @@ main (int argc,
g_test_add_func ("/spawn/search-path", test_search_path);
g_test_add_func ("/spawn/search-path-from-envp", test_search_path_from_envp);
g_test_add_func ("/spawn/search-path-ambiguous", test_search_path_ambiguous);
g_test_add_func ("/spawn/search-path-heap-allocation",
test_search_path_heap_allocation);
g_test_add_func ("/spawn/search-path-fallback-in-environ",
test_search_path_fallback_in_environ);
g_test_add_func ("/spawn/search-path-fallback-in-envp",
test_search_path_fallback_in_envp);
return g_test_run ();
}