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 <dirent.h> 35 #include <fcntl.h> 36 } 37 38 #include "mockfs.hh" 39 #include "utils.hh" 40 41 using namespace testing; 42 43 class Opendir: public FuseTest { 44 public: 45 void expect_lookup(const char *relpath, uint64_t ino) 46 { 47 FuseTest::expect_lookup(relpath, ino, S_IFDIR | 0755, 0, 1); 48 } 49 50 void expect_opendir(uint64_t ino, uint32_t flags, ProcessMockerT r) 51 { 52 /* opendir(3) calls fstatfs */ 53 EXPECT_CALL(*m_mock, process( 54 ResultOf([](auto in) { 55 return (in.header.opcode == FUSE_STATFS); 56 }, Eq(true)), 57 _) 58 ).WillRepeatedly(Invoke(ReturnImmediate([=](auto i __unused, auto& out) { 59 SET_OUT_HEADER_LEN(out, statfs); 60 }))); 61 62 EXPECT_CALL(*m_mock, process( 63 ResultOf([=](auto in) { 64 return (in.header.opcode == FUSE_OPENDIR && 65 in.header.nodeid == ino && 66 in.body.opendir.flags == flags); 67 }, Eq(true)), 68 _) 69 ).WillOnce(Invoke(r)); 70 } 71 72 }; 73 74 75 /* 76 * The fuse daemon fails the request with enoent. This usually indicates a 77 * race condition: some other FUSE client removed the file in between when the 78 * kernel checked for it with lookup and tried to open it 79 */ 80 TEST_F(Opendir, enoent) 81 { 82 const char FULLPATH[] = "mountpoint/some_dir"; 83 const char RELPATH[] = "some_dir"; 84 uint64_t ino = 42; 85 86 expect_lookup(RELPATH, ino); 87 expect_opendir(ino, O_RDONLY, ReturnErrno(ENOENT)); 88 89 ASSERT_EQ(-1, open(FULLPATH, O_DIRECTORY)); 90 EXPECT_EQ(ENOENT, errno); 91 } 92 93 /* 94 * The daemon is responsible for checking file permissions (unless the 95 * default_permissions mount option was used) 96 */ 97 TEST_F(Opendir, eperm) 98 { 99 const char FULLPATH[] = "mountpoint/some_dir"; 100 const char RELPATH[] = "some_dir"; 101 uint64_t ino = 42; 102 103 expect_lookup(RELPATH, ino); 104 expect_opendir(ino, O_RDONLY, ReturnErrno(EPERM)); 105 106 EXPECT_EQ(-1, open(FULLPATH, O_DIRECTORY)); 107 EXPECT_EQ(EPERM, errno); 108 } 109 110 TEST_F(Opendir, open) 111 { 112 const char FULLPATH[] = "mountpoint/some_dir"; 113 const char RELPATH[] = "some_dir"; 114 uint64_t ino = 42; 115 int fd; 116 117 expect_lookup(RELPATH, ino); 118 expect_opendir(ino, O_RDONLY, 119 ReturnImmediate([=](auto in __unused, auto& out) { 120 SET_OUT_HEADER_LEN(out, open); 121 })); 122 123 fd = open(FULLPATH, O_DIRECTORY); 124 EXPECT_LE(0, fd) << strerror(errno); 125 126 leak(fd); 127 } 128 129 /* Directories can be opened O_EXEC for stuff like fchdir(2) */ 130 TEST_F(Opendir, open_exec) 131 { 132 const char FULLPATH[] = "mountpoint/some_dir"; 133 const char RELPATH[] = "some_dir"; 134 uint64_t ino = 42; 135 int fd; 136 137 expect_lookup(RELPATH, ino); 138 expect_opendir(ino, O_EXEC, 139 ReturnImmediate([=](auto in __unused, auto& out) { 140 SET_OUT_HEADER_LEN(out, open); 141 })); 142 143 fd = open(FULLPATH, O_EXEC | O_DIRECTORY); 144 ASSERT_LE(0, fd) << strerror(errno); 145 146 leak(fd); 147 } 148 149 TEST_F(Opendir, opendir) 150 { 151 const char FULLPATH[] = "mountpoint/some_dir"; 152 const char RELPATH[] = "some_dir"; 153 uint64_t ino = 42; 154 155 expect_lookup(RELPATH, ino); 156 expect_opendir(ino, O_RDONLY, 157 ReturnImmediate([=](auto in __unused, auto& out) { 158 SET_OUT_HEADER_LEN(out, open); 159 })); 160 161 errno = 0; 162 EXPECT_NE(nullptr, opendir(FULLPATH)) << strerror(errno); 163 } 164