1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 31 extern "C" { 32 #include <fcntl.h> 33 #include <semaphore.h> 34 } 35 36 #include "mockfs.hh" 37 #include "utils.hh" 38 39 using namespace testing; 40 41 class Rmdir: public FuseTest { 42 public: 43 void expect_getattr(uint64_t ino, mode_t mode) 44 { 45 EXPECT_CALL(*m_mock, process( 46 ResultOf([=](auto in) { 47 return (in.header.opcode == FUSE_GETATTR && 48 in.header.nodeid == ino); 49 }, Eq(true)), 50 _) 51 ).WillOnce(Invoke(ReturnImmediate([=](auto i __unused, auto& out) { 52 SET_OUT_HEADER_LEN(out, attr); 53 out.body.attr.attr.ino = ino; // Must match nodeid 54 out.body.attr.attr.mode = mode; 55 out.body.attr.attr_valid = UINT64_MAX; 56 }))); 57 } 58 59 void expect_lookup(const char *relpath, uint64_t ino, int times=1) 60 { 61 EXPECT_LOOKUP(FUSE_ROOT_ID, relpath) 62 .Times(times) 63 .WillRepeatedly(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { 64 SET_OUT_HEADER_LEN(out, entry); 65 out.body.entry.attr_valid = UINT64_MAX; 66 out.body.entry.attr.mode = S_IFDIR | 0755; 67 out.body.entry.nodeid = ino; 68 out.body.entry.attr.nlink = 2; 69 }))); 70 } 71 72 void expect_rmdir(uint64_t parent, const char *relpath, int error) 73 { 74 EXPECT_CALL(*m_mock, process( 75 ResultOf([=](auto in) { 76 return (in.header.opcode == FUSE_RMDIR && 77 0 == strcmp(relpath, in.body.rmdir) && 78 in.header.nodeid == parent); 79 }, Eq(true)), 80 _) 81 ).WillOnce(Invoke(ReturnErrno(error))); 82 } 83 }; 84 85 /* 86 * A successful rmdir should clear the parent directory's attribute cache, 87 * because the fuse daemon should update its mtime and ctime 88 */ 89 TEST_F(Rmdir, parent_attr_cache) 90 { 91 const char FULLPATH[] = "mountpoint/some_dir"; 92 const char RELPATH[] = "some_dir"; 93 struct stat sb; 94 sem_t sem; 95 uint64_t ino = 42; 96 97 ASSERT_EQ(0, sem_init(&sem, 0, 0)) << strerror(errno); 98 99 EXPECT_CALL(*m_mock, process( 100 ResultOf([=](auto in) { 101 return (in.header.opcode == FUSE_GETATTR && 102 in.header.nodeid == FUSE_ROOT_ID); 103 }, Eq(true)), 104 _) 105 ).Times(2) 106 .WillRepeatedly(Invoke(ReturnImmediate([=](auto i __unused, auto& out) { 107 SET_OUT_HEADER_LEN(out, attr); 108 out.body.attr.attr.ino = ino; // Must match nodeid 109 out.body.attr.attr.mode = S_IFDIR | 0755; 110 out.body.attr.attr_valid = UINT64_MAX; 111 }))); 112 expect_lookup(RELPATH, ino); 113 expect_rmdir(FUSE_ROOT_ID, RELPATH, 0); 114 expect_forget(ino, 1, &sem); 115 116 ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno); 117 EXPECT_EQ(0, stat("mountpoint", &sb)) << strerror(errno); 118 sem_wait(&sem); 119 sem_destroy(&sem); 120 } 121 122 TEST_F(Rmdir, enotempty) 123 { 124 const char FULLPATH[] = "mountpoint/some_dir"; 125 const char RELPATH[] = "some_dir"; 126 uint64_t ino = 42; 127 128 expect_getattr(FUSE_ROOT_ID, S_IFDIR | 0755); 129 expect_lookup(RELPATH, ino); 130 expect_rmdir(FUSE_ROOT_ID, RELPATH, ENOTEMPTY); 131 132 ASSERT_NE(0, rmdir(FULLPATH)); 133 ASSERT_EQ(ENOTEMPTY, errno); 134 } 135 136 /* Removing a directory should expire its entry cache */ 137 TEST_F(Rmdir, entry_cache) 138 { 139 const char FULLPATH[] = "mountpoint/some_dir"; 140 const char RELPATH[] = "some_dir"; 141 sem_t sem; 142 uint64_t ino = 42; 143 144 expect_getattr(1, S_IFDIR | 0755); 145 expect_lookup(RELPATH, ino, 2); 146 expect_rmdir(FUSE_ROOT_ID, RELPATH, 0); 147 expect_forget(ino, 1, &sem); 148 149 ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno); 150 ASSERT_EQ(0, access(FULLPATH, F_OK)) << strerror(errno); 151 sem_wait(&sem); 152 sem_destroy(&sem); 153 } 154 155 TEST_F(Rmdir, ok) 156 { 157 const char FULLPATH[] = "mountpoint/some_dir"; 158 const char RELPATH[] = "some_dir"; 159 sem_t sem; 160 uint64_t ino = 42; 161 162 ASSERT_EQ(0, sem_init(&sem, 0, 0)) << strerror(errno); 163 164 expect_getattr(FUSE_ROOT_ID, S_IFDIR | 0755); 165 expect_lookup(RELPATH, ino); 166 expect_rmdir(FUSE_ROOT_ID, RELPATH, 0); 167 expect_forget(ino, 1, &sem); 168 169 ASSERT_EQ(0, rmdir(FULLPATH)) << strerror(errno); 170 sem_wait(&sem); 171 sem_destroy(&sem); 172 } 173