static void test_linked_units(const char *root) {
const char *p, *q;
UnitFileState state;
UnitFileChange *changes = NULL;
unsigned n_changes = 0, i;
/*
* We'll test three cases here:
*
* a) a unit file in /opt, that we use "systemctl link" and
* "systemctl enable" on to make it available to the system
*
* b) a unit file in /opt, that is statically linked into
* /usr/lib/systemd/system, that "enable" should work on
* correctly.
*
* c) a unit file in /opt, that is linked into
* /etc/systemd/system, and where "enable" should result in
* -ELOOP, since using information from /etc to generate
* information in /etc should not be allowed.
*/
p = strjoina(root, "/opt/linked.service");
assert_se(write_string_file(p,
"[Install]\n"
"WantedBy=multi-user.target\n", WRITE_STRING_FILE_CREATE) >= 0);
p = strjoina(root, "/opt/linked2.service");
assert_se(write_string_file(p,
"[Install]\n"
"WantedBy=multi-user.target\n", WRITE_STRING_FILE_CREATE) >= 0);
p = strjoina(root, "/opt/linked3.service");
assert_se(write_string_file(p,
"[Install]\n"
"WantedBy=multi-user.target\n", WRITE_STRING_FILE_CREATE) >= 0);
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "linked.service", NULL) == -ENOENT);
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "linked2.service", NULL) == -ENOENT);
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "linked3.service", NULL) == -ENOENT);
p = strjoina(root, "/usr/lib/systemd/system/linked2.service");
assert_se(symlink("/opt/linked2.service", p) >= 0);
p = strjoina(root, SYSTEM_CONFIG_UNIT_PATH"/linked3.service");
assert_se(symlink("/opt/linked3.service", p) >= 0);
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "linked.service", &state) == -ENOENT);
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "linked2.service", &state) >= 0 && state == UNIT_FILE_DISABLED);
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "linked3.service", &state) >= 0 && state == UNIT_FILE_LINKED);
/* First, let's link the unit into the search path */
assert_se(unit_file_link(UNIT_FILE_SYSTEM, 0, root, STRV_MAKE("/opt/linked.service"), &changes, &n_changes) >= 0);
assert_se(n_changes == 1);
assert_se(changes[0].type == UNIT_FILE_SYMLINK);
assert_se(streq(changes[0].source, "/opt/linked.service"));
p = strjoina(root, SYSTEM_CONFIG_UNIT_PATH"/linked.service");
assert_se(streq(changes[0].path, p));
unit_file_changes_free(changes, n_changes);
changes = NULL; n_changes = 0;
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "linked.service", &state) >= 0 && state == UNIT_FILE_LINKED);
/* Let's unlink it from the search path again */
assert_se(unit_file_disable(UNIT_FILE_SYSTEM, 0, root, STRV_MAKE("linked.service"), &changes, &n_changes) >= 0);
assert_se(n_changes == 1);
assert_se(changes[0].type == UNIT_FILE_UNLINK);
p = strjoina(root, SYSTEM_CONFIG_UNIT_PATH"/linked.service");
assert_se(streq(changes[0].path, p));
unit_file_changes_free(changes, n_changes);
changes = NULL; n_changes = 0;
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "linked.service", NULL) == -ENOENT);
/* Now, let's not just link it, but also enable it */
assert_se(unit_file_enable(UNIT_FILE_SYSTEM, 0, root, STRV_MAKE("/opt/linked.service"), &changes, &n_changes) >= 0);
assert_se(n_changes == 2);
p = strjoina(root, SYSTEM_CONFIG_UNIT_PATH"/multi-user.target.wants/linked.service");
q = strjoina(root, SYSTEM_CONFIG_UNIT_PATH"/linked.service");
for (i = 0 ; i < n_changes; i++) {
assert_se(changes[i].type == UNIT_FILE_SYMLINK);
assert_se(streq(changes[i].source, "/opt/linked.service"));
if (p && streq(changes[i].path, p))
p = NULL;
else if (q && streq(changes[i].path, q))
q = NULL;
else
assert_not_reached("wut?");
}
assert(!p && !q);
unit_file_changes_free(changes, n_changes);
changes = NULL; n_changes = 0;
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "linked.service", &state) >= 0 && state == UNIT_FILE_ENABLED);
/* And let's unlink it again */
assert_se(unit_file_disable(UNIT_FILE_SYSTEM, 0, root, STRV_MAKE("linked.service"), &changes, &n_changes) >= 0);
assert_se(n_changes == 2);
p = strjoina(root, SYSTEM_CONFIG_UNIT_PATH"/multi-user.target.wants/linked.service");
q = strjoina(root, SYSTEM_CONFIG_UNIT_PATH"/linked.service");
for (i = 0; i < n_changes; i++) {
assert_se(changes[i].type == UNIT_FILE_UNLINK);
if (p && streq(changes[i].path, p))
p = NULL;
else if (q && streq(changes[i].path, q))
q = NULL;
else
assert_not_reached("wut?");
}
assert(!p && !q);
unit_file_changes_free(changes, n_changes);
changes = NULL; n_changes = 0;
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "linked.service", NULL) == -ENOENT);
assert_se(unit_file_enable(UNIT_FILE_SYSTEM, 0, root, STRV_MAKE("linked2.service"), &changes, &n_changes) >= 0);
assert_se(n_changes == 2);
p = strjoina(root, SYSTEM_CONFIG_UNIT_PATH"/multi-user.target.wants/linked2.service");
q = strjoina(root, SYSTEM_CONFIG_UNIT_PATH"/linked2.service");
for (i = 0 ; i < n_changes; i++) {
assert_se(changes[i].type == UNIT_FILE_SYMLINK);
assert_se(streq(changes[i].source, "/opt/linked2.service"));
if (p && streq(changes[i].path, p))
p = NULL;
else if (q && streq(changes[i].path, q))
q = NULL;
else
assert_not_reached("wut?");
}
assert(!p && !q);
unit_file_changes_free(changes, n_changes);
changes = NULL; n_changes = 0;
assert_se(unit_file_enable(UNIT_FILE_SYSTEM, 0, root, STRV_MAKE("linked3.service"), &changes, &n_changes) >= 0);
assert_se(n_changes == 1);
assert_se(changes[0].type == UNIT_FILE_SYMLINK);
assert_se(startswith(changes[0].path, root));
assert_se(endswith(changes[0].path, "linked3.service"));
assert_se(streq(changes[0].source, "/opt/linked3.service"));
unit_file_changes_free(changes, n_changes);
changes = NULL; n_changes = 0;
}
n_changes = 0;
r = unit_file_disable(UNIT_FILE_SYSTEM, false, NULL, STRV_MAKE(basename(files2[0])), &changes, &n_changes);
assert_se(r >= 0);
dump_changes(changes, n_changes);
unit_file_changes_free(changes, n_changes);
r = unit_file_get_state(UNIT_FILE_SYSTEM, NULL, basename(files2[0]), &state);
assert_se(r < 0);
log_error("link files2");
changes = NULL;
n_changes = 0;
r = unit_file_link(UNIT_FILE_SYSTEM, false, NULL, (char**) files2, false, &changes, &n_changes);
assert_se(r >= 0);
dump_changes(changes, n_changes);
unit_file_changes_free(changes, n_changes);
r = unit_file_get_state(UNIT_FILE_SYSTEM, NULL, basename(files2[0]), &state);
assert_se(r >= 0);
assert_se(state == UNIT_FILE_LINKED);
log_error("disable files2");
changes = NULL;
n_changes = 0;
r = unit_file_disable(UNIT_FILE_SYSTEM, false, NULL, STRV_MAKE(basename(files2[0])), &changes, &n_changes);
assert_se(r >= 0);
