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 /* 87 * Pick fsize and lbn large enough that max length runs won't reach 88 * either beginning or end of file 89 */ 90 const off_t filesize = 1 << 30; 91 int64_t lbn = 100; 92 int64_t pbn = 12345; 93 const ino_t ino = 42; 94 int fd; 95 96 expect_lookup(RELPATH, 42, filesize); 97 expect_open(ino, 0, 1); 98 expect_bmap(ino, lbn, m_maxbcachebuf, pbn); 99 100 fd = open(FULLPATH, O_RDWR); 101 ASSERT_LE(0, fd) << strerror(errno); 102 103 arg.bn = lbn; 104 arg.runp = -1; 105 arg.runb = -1; 106 ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno); 107 EXPECT_EQ(arg.bn, pbn); 108 EXPECT_EQ(arg.runp, m_maxphys / m_maxbcachebuf - 1); 109 EXPECT_EQ(arg.runb, m_maxphys / m_maxbcachebuf - 1); 110 } 111 112 /* 113 * If the daemon does not implement VOP_BMAP, fusefs should return sensible 114 * defaults. 115 */ 116 TEST_F(Bmap, default_) 117 { 118 struct fiobmap2_arg arg; 119 const off_t filesize = 1 << 30; 120 const ino_t ino = 42; 121 int64_t lbn; 122 int fd; 123 124 expect_lookup(RELPATH, 42, filesize); 125 expect_open(ino, 0, 1); 126 EXPECT_CALL(*m_mock, process( 127 ResultOf([=](auto in) { 128 return (in.header.opcode == FUSE_BMAP); 129 }, Eq(true)), 130 _) 131 ).WillOnce(Invoke(ReturnErrno(ENOSYS))); 132 133 fd = open(FULLPATH, O_RDWR); 134 ASSERT_LE(0, fd) << strerror(errno); 135 136 /* First block */ 137 lbn = 0; 138 arg.bn = lbn; 139 arg.runp = -1; 140 arg.runb = -1; 141 ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno); 142 EXPECT_EQ(arg.bn, 0); 143 EXPECT_EQ(arg.runp, m_maxphys / m_maxbcachebuf - 1); 144 EXPECT_EQ(arg.runb, 0); 145 146 /* In the middle */ 147 lbn = filesize / m_maxbcachebuf / 2; 148 arg.bn = lbn; 149 arg.runp = -1; 150 arg.runb = -1; 151 ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno); 152 EXPECT_EQ(arg.bn, lbn * m_maxbcachebuf / DEV_BSIZE); 153 EXPECT_EQ(arg.runp, m_maxphys / m_maxbcachebuf - 1); 154 EXPECT_EQ(arg.runb, m_maxphys / m_maxbcachebuf - 1); 155 156 /* Last block */ 157 lbn = filesize / m_maxbcachebuf - 1; 158 arg.bn = lbn; 159 arg.runp = -1; 160 arg.runb = -1; 161 ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno); 162 EXPECT_EQ(arg.bn, lbn * m_maxbcachebuf / DEV_BSIZE); 163 EXPECT_EQ(arg.runp, 0); 164 EXPECT_EQ(arg.runb, m_maxphys / m_maxbcachebuf - 1); 165 166 leak(fd); 167 } 168