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 * $FreeBSD$ 31 */ 32 33 extern "C" { 34 #include <sys/param.h> 35 #include <sys/ioctl.h> 36 #include <sys/filio.h> 37 38 #include <fcntl.h> 39 } 40 41 #include "mockfs.hh" 42 #include "utils.hh" 43 44 using namespace testing; 45 46 const static char FULLPATH[] = "mountpoint/foo"; 47 const static char RELPATH[] = "foo"; 48 49 class Bmap: public FuseTest { 50 public: 51 virtual void SetUp() { 52 m_maxreadahead = UINT32_MAX; 53 FuseTest::SetUp(); 54 } 55 void expect_bmap(uint64_t ino, uint64_t lbn, uint32_t blocksize, uint64_t pbn) 56 { 57 EXPECT_CALL(*m_mock, process( 58 ResultOf([=](auto in) { 59 return (in.header.opcode == FUSE_BMAP && 60 in.header.nodeid == ino && 61 in.body.bmap.block == lbn && 62 in.body.bmap.blocksize == blocksize); 63 }, Eq(true)), 64 _) 65 ).WillOnce(Invoke(ReturnImmediate([=](auto i __unused, auto& out) { 66 SET_OUT_HEADER_LEN(out, bmap); 67 out.body.bmap.block = pbn; 68 }))); 69 } 70 71 void expect_lookup(const char *relpath, uint64_t ino, off_t size) 72 { 73 FuseTest::expect_lookup(relpath, ino, S_IFREG | 0644, size, 1, 74 UINT64_MAX); 75 } 76 }; 77 78 /* 79 * Test FUSE_BMAP 80 * XXX The FUSE protocol does not include the runp and runb variables, so those 81 * must be guessed in-kernel. 82 */ 83 TEST_F(Bmap, bmap) 84 { 85 struct fiobmap2_arg arg; 86 const off_t filesize = 1 << 20; 87 const ino_t ino = 42; 88 int64_t lbn = 10; 89 int64_t pbn = 12345; 90 int fd; 91 92 expect_lookup(RELPATH, 42, filesize); 93 expect_open(ino, 0, 1); 94 expect_bmap(ino, lbn, m_maxbcachebuf, pbn); 95 96 fd = open(FULLPATH, O_RDWR); 97 ASSERT_LE(0, fd) << strerror(errno); 98 99 arg.bn = lbn; 100 arg.runp = -1; 101 arg.runb = -1; 102 ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno); 103 EXPECT_EQ(arg.bn, pbn); 104 EXPECT_EQ(arg.runp, m_maxphys / m_maxbcachebuf - 1); 105 EXPECT_EQ(arg.runb, m_maxphys / m_maxbcachebuf - 1); 106 } 107 108 /* 109 * If the daemon does not implement VOP_BMAP, fusefs should return sensible 110 * defaults. 111 */ 112 TEST_F(Bmap, default_) 113 { 114 struct fiobmap2_arg arg; 115 const off_t filesize = 1 << 20; 116 const ino_t ino = 42; 117 int64_t lbn; 118 int fd; 119 120 expect_lookup(RELPATH, 42, filesize); 121 expect_open(ino, 0, 1); 122 EXPECT_CALL(*m_mock, process( 123 ResultOf([=](auto in) { 124 return (in.header.opcode == FUSE_BMAP); 125 }, Eq(true)), 126 _) 127 ).WillOnce(Invoke(ReturnErrno(ENOSYS))); 128 129 fd = open(FULLPATH, O_RDWR); 130 ASSERT_LE(0, fd) << strerror(errno); 131 132 /* First block */ 133 lbn = 0; 134 arg.bn = lbn; 135 arg.runp = -1; 136 arg.runb = -1; 137 ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno); 138 EXPECT_EQ(arg.bn, 0); 139 EXPECT_EQ(arg.runp, m_maxphys / m_maxbcachebuf - 1); 140 EXPECT_EQ(arg.runb, 0); 141 142 /* In the middle */ 143 lbn = filesize / m_maxbcachebuf / 2; 144 arg.bn = lbn; 145 arg.runp = -1; 146 arg.runb = -1; 147 ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno); 148 EXPECT_EQ(arg.bn, lbn * m_maxbcachebuf / DEV_BSIZE); 149 EXPECT_EQ(arg.runp, m_maxphys / m_maxbcachebuf - 1); 150 EXPECT_EQ(arg.runb, m_maxphys / m_maxbcachebuf - 1); 151 152 /* Last block */ 153 lbn = filesize / m_maxbcachebuf - 1; 154 arg.bn = lbn; 155 arg.runp = -1; 156 arg.runb = -1; 157 ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno); 158 EXPECT_EQ(arg.bn, lbn * m_maxbcachebuf / DEV_BSIZE); 159 EXPECT_EQ(arg.runp, 0); 160 EXPECT_EQ(arg.runb, m_maxphys / m_maxbcachebuf - 1); 161 162 leak(fd); 163 } 164