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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "alloc-util.h"
#include "fd-util.h"
#include "escape.h"
#include "libmount-util.h"
#include "tests.h"
static void test_libmount_unescaping_one(
const char *title,
const char *string,
bool may_fail,
const char *expected_source,
const char *expected_target) {
/* A test for libmount really */
int r;
log_info("/* %s %s */", __func__, title);
_cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL;
_cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL;
_cleanup_fclose_ FILE *f = NULL;
f = fmemopen((char*) string, strlen(string), "re");
assert_se(f);
assert_se(libmount_parse(title, f, &table, &iter) >= 0);
struct libmnt_fs *fs;
const char *source, *target;
_cleanup_free_ char *x = NULL, *cs = NULL, *s = NULL, *ct = NULL, *t = NULL;
/* We allow this call and the checks below to fail in some cases. See the case definitions below. */
r = mnt_table_next_fs(table, iter, &fs);
if (r != 0 && may_fail) {
log_error_errno(r, "mnt_table_next_fs failed: %m");
return;
}
assert_se(r == 0);
assert_se(x = cescape(string));
assert_se(source = mnt_fs_get_source(fs));
assert_se(target = mnt_fs_get_target(fs));
assert_se(cs = cescape(source));
assert_se(ct = cescape(target));
assert_se(cunescape(source, UNESCAPE_RELAX, &s) >= 0);
assert_se(cunescape(target, UNESCAPE_RELAX, &t) >= 0);
log_info("from '%s'", x);
log_info("source: '%s'", source);
log_info("source: '%s'", cs);
log_info("source: '%s'", s);
log_info("expected: '%s'", strna(expected_source));
log_info("target: '%s'", target);
log_info("target: '%s'", ct);
log_info("target: '%s'", t);
log_info("expected: '%s'", strna(expected_target));
assert_se(may_fail || streq(source, expected_source));
assert_se(may_fail || streq(target, expected_target));
assert_se(mnt_table_next_fs(table, iter, &fs) == 1);
}
static void test_libmount_unescaping(void) {
test_libmount_unescaping_one(
"escaped space + utf8",
"729 38 0:59 / /tmp/„zupa\\040zębowa” rw,relatime shared:395 - tmpfs die\\040Brühe rw,seclabel",
false,
"die Brühe",
"/tmp/„zupa zębowa”"
);
test_libmount_unescaping_one(
"escaped newline",
"729 38 0:59 / /tmp/x\\012y rw,relatime shared:395 - tmpfs newline rw,seclabel",
false,
"newline",
"/tmp/x\ny"
);
/* The result of "mount -t tmpfs '' /tmp/emptysource".
* This will fail with libmount <= v2.33.
* See https://github.com/karelzak/util-linux/commit/18a52a5094.
*/
test_libmount_unescaping_one(
"empty source",
"760 38 0:60 / /tmp/emptysource rw,relatime shared:410 - tmpfs rw,seclabel",
true,
"",
"/tmp/emptysource"
);
/* The kernel leaves \r as is.
* Also see https://github.com/karelzak/util-linux/issues/780.
*/
test_libmount_unescaping_one(
"foo\\rbar",
"790 38 0:61 / /tmp/foo\rbar rw,relatime shared:425 - tmpfs tmpfs rw,seclabel",
true,
"tmpfs",
"/tmp/foo\rbar"
);
}
int main(int argc, char *argv[]) {
test_setup_logging(LOG_DEBUG);
test_libmount_unescaping();
return 0;
}
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