1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2019 The FreeBSD Foundation
5 *
6 * This software was developed by BFF Storage Systems, LLC under sponsorship
7 * from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31extern "C" {
32#include <fcntl.h>
33#include <semaphore.h>
34}
35
36#include "mockfs.hh"
37#include "utils.hh"
38
39using namespace testing;
40
41class Rmdir: public FuseTest {
42public:
43void expect_lookup(const char *relpath, uint64_t ino, int times=1)
44{
45	EXPECT_LOOKUP(FUSE_ROOT_ID, relpath)
46	.Times(times)
47	.WillRepeatedly(Invoke(ReturnImmediate([=](auto in __unused, auto& out) {
48		SET_OUT_HEADER_LEN(out, entry);
49		out.body.entry.attr_valid = UINT64_MAX;
50		out.body.entry.attr.mode = S_IFDIR | 0755;
51		out.body.entry.nodeid = ino;
52		out.body.entry.attr.nlink = 2;
53	})));
54}
55
56void expect_rmdir(uint64_t parent, const char *relpath, int error)
57{
58	EXPECT_CALL(*m_mock, process(
59		ResultOf([=](auto in) {
60			return (in.header.opcode == FUSE_RMDIR &&
61				0 == strcmp(relpath, in.body.rmdir) &&
62				in.header.nodeid == parent);
63		}, Eq(true)),
64		_)
65	).WillOnce(Invoke(ReturnErrno(error)));
66}
67};
68
69/*
70 * A successful rmdir should clear the parent directory's attribute cache,
71 * because the fuse daemon should update its mtime and ctime
72 */
73TEST_F(Rmdir, parent_attr_cache)
74{
75	const char FULLPATH[] = "mountpoint/some_dir";
76	const char RELPATH[] = "some_dir";
77	struct stat sb;
78	sem_t sem;
79	uint64_t ino = 42;
80	Sequence seq;
81
82	ASSERT_EQ(0, sem_init(&sem, 0, 0)) << strerror(errno);
83
84	expect_lookup(RELPATH, ino);
85	EXPECT_CALL(*m_mock, process(
86		ResultOf([=](auto in) {
87			return (in.header.opcode == FUSE_RMDIR &&
88				0 == strcmp(RELPATH, in.body.rmdir) &&
89				in.header.nodeid == FUSE_ROOT_ID);
90		}, Eq(true)),
91		_)
92	).InSequence(seq)
93	.WillOnce(Invoke(ReturnErrno(0)));
94	expect_forget(ino, 1, &sem);
95	EXPECT_CALL(*m_mock, process(
96		ResultOf([=](auto in) {
97			return (in.header.opcode == FUSE_GETATTR &&
98				in.header.nodeid == FUSE_ROOT_ID);
99		}, Eq(true)),
100		_)
101	).InSequence(seq)
102	.WillRepeatedly(Invoke(ReturnImmediate([=](auto i __unused, auto& out) {
103		SET_OUT_HEADER_LEN(out, attr);
104		out.body.attr.attr.ino = FUSE_ROOT_ID;
105		out.body.attr.attr.mode = S_IFDIR | 0755;
106		out.body.attr.attr_valid = UINT64_MAX;
107	})));
108
109	ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno);
110	EXPECT_EQ(0, stat("mountpoint", &sb)) << strerror(errno);
111	sem_wait(&sem);
112	sem_destroy(&sem);
113}
114
115TEST_F(Rmdir, enotempty)
116{
117	const char FULLPATH[] = "mountpoint/some_dir";
118	const char RELPATH[] = "some_dir";
119	uint64_t ino = 42;
120
121	expect_lookup(RELPATH, ino);
122	expect_rmdir(FUSE_ROOT_ID, RELPATH, ENOTEMPTY);
123
124	ASSERT_NE(0, rmdir(FULLPATH));
125	ASSERT_EQ(ENOTEMPTY, errno);
126}
127
128/* Removing a directory should expire its entry cache */
129TEST_F(Rmdir, entry_cache)
130{
131	const char FULLPATH[] = "mountpoint/some_dir";
132	const char RELPATH[] = "some_dir";
133	sem_t sem;
134	uint64_t ino = 42;
135
136	expect_lookup(RELPATH, ino, 2);
137	expect_rmdir(FUSE_ROOT_ID, RELPATH, 0);
138	expect_forget(ino, 1, &sem);
139
140	ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno);
141	ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno);
142	sem_wait(&sem);
143	sem_destroy(&sem);
144}
145
146TEST_F(Rmdir, ok)
147{
148	const char FULLPATH[] = "mountpoint/some_dir";
149	const char RELPATH[] = "some_dir";
150	sem_t sem;
151	uint64_t ino = 42;
152
153	ASSERT_EQ(0, sem_init(&sem, 0, 0)) << strerror(errno);
154
155	expect_lookup(RELPATH, ino);
156	expect_rmdir(FUSE_ROOT_ID, RELPATH, 0);
157	expect_forget(ino, 1, &sem);
158
159	ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno);
160	sem_wait(&sem);
161	sem_destroy(&sem);
162}
163