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 * $FreeBSD$ 31 */ 32 33 extern "C" { 34 #include <fcntl.h> 35 #include <unistd.h> 36 } 37 38 #include "mockfs.hh" 39 #include "utils.hh" 40 41 using namespace testing; 42 43 class Release: public FuseTest { 44 45 public: 46 void expect_lookup(const char *relpath, uint64_t ino, int times) 47 { 48 FuseTest::expect_lookup(relpath, ino, S_IFREG | 0644, 0, times); 49 } 50 51 void expect_release(uint64_t ino, uint64_t lock_owner, 52 uint32_t flags, int error) 53 { 54 EXPECT_CALL(*m_mock, process( 55 ResultOf([=](auto in) { 56 return (in.header.opcode == FUSE_RELEASE && 57 in.header.nodeid == ino && 58 in.body.release.lock_owner == lock_owner && 59 in.body.release.fh == FH && 60 in.body.release.flags == flags); 61 }, Eq(true)), 62 _) 63 ).WillOnce(Invoke(ReturnErrno(error))) 64 .RetiresOnSaturation(); 65 } 66 }; 67 68 class ReleaseWithLocks: public Release { 69 virtual void SetUp() { 70 m_init_flags = FUSE_POSIX_LOCKS; 71 Release::SetUp(); 72 } 73 }; 74 75 76 /* If a file descriptor is duplicated, only the last close causes RELEASE */ 77 TEST_F(Release, dup) 78 { 79 const char FULLPATH[] = "mountpoint/some_file.txt"; 80 const char RELPATH[] = "some_file.txt"; 81 uint64_t ino = 42; 82 int fd, fd2; 83 84 expect_lookup(RELPATH, ino, 1); 85 expect_open(ino, 0, 1); 86 expect_flush(ino, 1, ReturnErrno(0)); 87 expect_release(ino, getpid(), O_RDONLY, 0); 88 89 fd = open(FULLPATH, O_RDONLY); 90 ASSERT_LE(0, fd) << strerror(errno); 91 92 fd2 = dup(fd); 93 ASSERT_LE(0, fd2) << strerror(errno); 94 95 ASSERT_EQ(0, close(fd2)) << strerror(errno); 96 ASSERT_EQ(0, close(fd)) << strerror(errno); 97 } 98 99 /* 100 * Some FUSE filesystem cache data internally and flush it on release. Such 101 * filesystems may generate errors during release. On Linux, these get 102 * returned by close(2). However, POSIX does not require close(2) to return 103 * this error. FreeBSD's fuse(4) should return EIO if it returns an error at 104 * all. 105 */ 106 /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/close.html */ 107 TEST_F(Release, eio) 108 { 109 const char FULLPATH[] = "mountpoint/some_file.txt"; 110 const char RELPATH[] = "some_file.txt"; 111 uint64_t ino = 42; 112 int fd; 113 114 expect_lookup(RELPATH, ino, 1); 115 expect_open(ino, 0, 1); 116 expect_flush(ino, 1, ReturnErrno(0)); 117 expect_release(ino, getpid(), O_WRONLY, EIO); 118 119 fd = open(FULLPATH, O_WRONLY); 120 ASSERT_LE(0, fd) << strerror(errno); 121 122 ASSERT_TRUE(0 == close(fd) || errno == EIO) << strerror(errno); 123 } 124 125 /* 126 * FUSE_RELEASE should contain the same flags used for FUSE_OPEN 127 */ 128 /* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236340 */ 129 TEST_F(Release, DISABLED_flags) 130 { 131 const char FULLPATH[] = "mountpoint/some_file.txt"; 132 const char RELPATH[] = "some_file.txt"; 133 uint64_t ino = 42; 134 int fd; 135 136 expect_lookup(RELPATH, ino, 1); 137 expect_open(ino, 0, 1); 138 expect_flush(ino, 1, ReturnErrno(0)); 139 expect_release(ino, getpid(), O_RDWR | O_APPEND, 0); 140 141 fd = open(FULLPATH, O_RDWR | O_APPEND); 142 ASSERT_LE(0, fd) << strerror(errno); 143 144 ASSERT_EQ(0, close(fd)) << strerror(errno); 145 } 146 147 /* 148 * fuse(4) will issue multiple FUSE_OPEN operations for the same file if it's 149 * opened with different modes. Each FUSE_OPEN should get its own 150 * FUSE_RELEASE. 151 */ 152 TEST_F(Release, multiple_opens) 153 { 154 const char FULLPATH[] = "mountpoint/some_file.txt"; 155 const char RELPATH[] = "some_file.txt"; 156 uint64_t ino = 42; 157 int fd, fd2; 158 159 expect_lookup(RELPATH, ino, 2); 160 expect_open(ino, 0, 2); 161 expect_flush(ino, 2, ReturnErrno(0)); 162 expect_release(ino, getpid(), O_RDONLY, 0); 163 164 fd = open(FULLPATH, O_RDONLY); 165 ASSERT_LE(0, fd) << strerror(errno); 166 167 expect_release(ino, getpid(), O_WRONLY, 0); 168 fd2 = open(FULLPATH, O_WRONLY); 169 ASSERT_LE(0, fd2) << strerror(errno); 170 171 ASSERT_EQ(0, close(fd2)) << strerror(errno); 172 ASSERT_EQ(0, close(fd)) << strerror(errno); 173 } 174 175 TEST_F(Release, ok) 176 { 177 const char FULLPATH[] = "mountpoint/some_file.txt"; 178 const char RELPATH[] = "some_file.txt"; 179 uint64_t ino = 42; 180 int fd; 181 182 expect_lookup(RELPATH, ino, 1); 183 expect_open(ino, 0, 1); 184 expect_flush(ino, 1, ReturnErrno(0)); 185 expect_release(ino, getpid(), O_RDONLY, 0); 186 187 fd = open(FULLPATH, O_RDONLY); 188 ASSERT_LE(0, fd) << strerror(errno); 189 190 ASSERT_EQ(0, close(fd)) << strerror(errno); 191 } 192 193 /* When closing a file with a POSIX file lock, release should release the lock*/ 194 TEST_F(ReleaseWithLocks, unlock_on_close) 195 { 196 const char FULLPATH[] = "mountpoint/some_file.txt"; 197 const char RELPATH[] = "some_file.txt"; 198 uint64_t ino = 42; 199 int fd; 200 struct flock fl; 201 pid_t pid = getpid(); 202 203 expect_lookup(RELPATH, ino, 1); 204 expect_open(ino, 0, 1); 205 EXPECT_CALL(*m_mock, process( 206 ResultOf([=](auto in) { 207 return (in.header.opcode == FUSE_SETLK && 208 in.header.nodeid == ino && 209 in.body.setlk.lk.type == F_RDLCK && 210 in.body.setlk.fh == FH); 211 }, Eq(true)), 212 _) 213 ).WillOnce(Invoke(ReturnErrno(0))); 214 EXPECT_CALL(*m_mock, process( 215 ResultOf([=](auto in) { 216 return (in.header.opcode == FUSE_SETLK && 217 in.header.nodeid == ino && 218 in.body.setlk.lk.type == F_UNLCK && 219 in.body.setlk.fh == FH); 220 }, Eq(true)), 221 _) 222 ).WillOnce(Invoke(ReturnErrno(0))); 223 expect_flush(ino, 1, ReturnErrno(0)); 224 expect_release(ino, static_cast<uint64_t>(pid), O_RDWR, 0); 225 226 fd = open(FULLPATH, O_RDWR); 227 ASSERT_LE(0, fd) << strerror(errno); 228 fl.l_start = 0; 229 fl.l_len = 0; 230 fl.l_pid = pid; 231 fl.l_type = F_RDLCK; 232 fl.l_whence = SEEK_SET; 233 fl.l_sysid = 0; 234 ASSERT_NE(-1, fcntl(fd, F_SETLK, &fl)) << strerror(errno); 235 236 ASSERT_EQ(0, close(fd)) << strerror(errno); 237 } 238