static void test_readlink_and_make_absolute(void) {
char tempdir[] = "/tmp/test-readlink_and_make_absolute";
char name[] = "/tmp/test-readlink_and_make_absolute/original";
char name2[] = "test-readlink_and_make_absolute/original";
char name_alias[] = "/tmp/test-readlink_and_make_absolute-alias";
char *r = NULL;
assert_se(mkdir_safe(tempdir, 0755, getuid(), getgid()) >= 0);
assert_se(touch(name) >= 0);
assert_se(symlink(name, name_alias) >= 0);
assert_se(readlink_and_make_absolute(name_alias, &r) >= 0);
assert_se(streq(r, name));
free(r);
assert_se(unlink(name_alias) >= 0);
assert_se(chdir(tempdir) >= 0);
assert_se(symlink(name2, name_alias) >= 0);
assert_se(readlink_and_make_absolute(name_alias, &r) >= 0);
assert_se(streq(r, name));
free(r);
assert_se(unlink(name_alias) >= 0);
assert_se(rm_rf(tempdir, REMOVE_ROOT|REMOVE_PHYSICAL) >= 0);
}
const char* get_testdata_dir(const char *suffix) {
const char *env;
/* convenience: caller does not need to free result */
static char testdir[PATH_MAX];
/* if the env var is set, use that */
env = getenv("SYSTEMD_TEST_DATA");
testdir[sizeof(testdir) - 1] = '\0';
if (env) {
if (access(env, F_OK) < 0) {
fputs("ERROR: $SYSTEMD_TEST_DATA directory does not exist\n", stderr);
exit(1);
}
strncpy(testdir, env, sizeof(testdir) - 1);
} else {
_cleanup_free_ char *exedir = NULL;
assert_se(readlink_and_make_absolute("/proc/self/exe", &exedir) >= 0);
/* Check if we're running from the builddir. If so, use the compiled in path. */
if (path_startswith(exedir, ABS_BUILD_DIR))
assert_se(snprintf(testdir, sizeof(testdir), "%s/test", ABS_SRC_DIR) > 0);
else
/* Try relative path, according to the install-test layout */
assert_se(snprintf(testdir, sizeof(testdir), "%s/testdata", dirname(exedir)) > 0);
/* test this without the suffix, as it may contain a glob */
if (access(testdir, F_OK) < 0) {
fputs("ERROR: Cannot find testdata directory, set $SYSTEMD_TEST_DATA\n", stderr);
exit(1);
}
}
strncpy(testdir + strlen(testdir), suffix, sizeof(testdir) - strlen(testdir) - 1);
return testdir;
}
