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 struct _sem; 34 typedef struct _sem sem_t; 35 struct _dirdesc; 36 typedef struct _dirdesc DIR; 37 38 /* Nanoseconds to sleep, for tests that must */ 39 #define NAP_NS (100'000'000) 40 41 void get_unprivileged_id(uid_t *uid, gid_t *gid); 42 inline void nap() 43 { 44 usleep(NAP_NS / 1000); 45 } 46 47 enum cache_mode { 48 Uncached, 49 Writethrough, 50 Writeback, 51 WritebackAsync 52 }; 53 54 const char *cache_mode_to_s(enum cache_mode cm); 55 bool is_unsafe_aio_enabled(void); 56 57 extern const uint32_t libfuse_max_write; 58 class FuseTest : public ::testing::Test { 59 protected: 60 uint32_t m_maxreadahead; 61 uint32_t m_maxwrite; 62 uint32_t m_init_flags; 63 bool m_allow_other; 64 bool m_default_permissions; 65 uint32_t m_kernel_minor_version; 66 enum poll_method m_pm; 67 bool m_push_symlinks_in; 68 bool m_ro; 69 bool m_async; 70 bool m_noclusterr; 71 bool m_nointr; 72 unsigned m_time_gran; 73 MockFS *m_mock = NULL; 74 const static uint64_t FH = 0xdeadbeef1a7ebabe; 75 76 public: 77 int m_maxbcachebuf; 78 int m_maxphys; 79 80 FuseTest(): 81 m_maxreadahead(0), 82 m_maxwrite(0), 83 m_init_flags(0), 84 m_allow_other(false), 85 m_default_permissions(false), 86 m_kernel_minor_version(FUSE_KERNEL_MINOR_VERSION), 87 m_pm(BLOCKING), 88 m_push_symlinks_in(false), 89 m_ro(false), 90 m_async(false), 91 m_noclusterr(false), 92 m_nointr(false), 93 m_time_gran(1), 94 m_maxbcachebuf(0), 95 m_maxphys(0) 96 {} 97 98 virtual void SetUp(); 99 100 virtual void TearDown() { 101 if (m_mock) 102 delete m_mock; 103 } 104 105 /* 106 * Create an expectation that FUSE_ACCESS will be called once for the 107 * given inode with the given access_mode, returning the given errno 108 */ 109 void expect_access(uint64_t ino, mode_t access_mode, int error); 110 111 /* Expect FUSE_DESTROY and shutdown the daemon */ 112 void expect_destroy(int error); 113 114 /* 115 * Create an expectation that FUSE_FLUSH will be called times times for 116 * the given inode 117 */ 118 void expect_flush(uint64_t ino, int times, ProcessMockerT r); 119 120 /* 121 * Create an expectation that FUSE_FORGET will be called for the given 122 * inode. There will be no response. If sem is provided, it will be 123 * posted after the operation is received by the daemon. 124 */ 125 void expect_forget(uint64_t ino, uint64_t nlookup, sem_t *sem = NULL); 126 127 /* 128 * Create an expectation that FUSE_GETATTR will be called for the given 129 * inode any number of times. It will respond with a few basic 130 * attributes, like the given size and the mode S_IFREG | 0644 131 */ 132 void expect_getattr(uint64_t ino, uint64_t size); 133 134 /* 135 * Create an expectation that FUSE_GETXATTR will be called once for the 136 * given inode. 137 */ 138 void expect_getxattr(uint64_t ino, const char *attr, ProcessMockerT r); 139 140 /* 141 * Create an expectation that FUSE_LOOKUP will be called for the given 142 * path exactly times times and cache validity period. It will respond 143 * with inode ino, mode mode, filesize size. 144 */ 145 void expect_lookup(const char *relpath, uint64_t ino, mode_t mode, 146 uint64_t size, int times, uint64_t attr_valid = UINT64_MAX, 147 uid_t uid = 0, gid_t gid = 0); 148 149 /* The protocol 7.8 version of expect_lookup */ 150 void expect_lookup_7_8(const char *relpath, uint64_t ino, mode_t mode, 151 uint64_t size, int times, uint64_t attr_valid = UINT64_MAX, 152 uid_t uid = 0, gid_t gid = 0); 153 154 /* 155 * Create an expectation that FUSE_OPEN will be called for the given 156 * inode exactly times times. It will return with open_flags flags and 157 * file handle FH. 158 */ 159 void expect_open(uint64_t ino, uint32_t flags, int times); 160 161 /* 162 * Create an expectation that FUSE_OPENDIR will be called exactly once 163 * for inode ino. 164 */ 165 void expect_opendir(uint64_t ino); 166 167 /* 168 * Create an expectation that FUSE_READ will be called exactly once for 169 * the given inode, at offset offset and with size isize. It will 170 * return the first osize bytes from contents 171 * 172 * Protocol 7.8 tests can use this same expectation method because 173 * nothing currently validates the size of the fuse_read_in struct. 174 */ 175 void expect_read(uint64_t ino, uint64_t offset, uint64_t isize, 176 uint64_t osize, const void *contents, int flags = -1); 177 178 /* 179 * Create an expectation that FUSE_READIR will be called any number of 180 * times on the given ino with the given offset, returning (by copy) 181 * the provided entries 182 */ 183 void expect_readdir(uint64_t ino, uint64_t off, 184 std::vector<struct dirent> &ents); 185 186 /* 187 * Create an expectation that FUSE_RELEASE will be called exactly once 188 * for the given inode and filehandle, returning success 189 */ 190 void expect_release(uint64_t ino, uint64_t fh); 191 192 /* 193 * Create an expectation that FUSE_RELEASEDIR will be called exactly 194 * once for the given inode 195 */ 196 void expect_releasedir(uint64_t ino, ProcessMockerT r); 197 198 /* 199 * Create an expectation that FUSE_UNLINK will be called exactly once 200 * for the given path, returning an errno 201 */ 202 void expect_unlink(uint64_t parent, const char *path, int error); 203 204 /* 205 * Create an expectation that FUSE_WRITE will be called exactly once 206 * for the given inode, at offset offset, with size isize and buffer 207 * contents. Any flags present in flags_set must be set, and any 208 * present in flags_unset must not be set. Other flags are don't care. 209 * It will return osize. 210 */ 211 void expect_write(uint64_t ino, uint64_t offset, uint64_t isize, 212 uint64_t osize, uint32_t flags_set, uint32_t flags_unset, 213 const void *contents); 214 215 /* Protocol 7.8 version of expect_write */ 216 void expect_write_7_8(uint64_t ino, uint64_t offset, uint64_t isize, 217 uint64_t osize, const void *contents); 218 219 /* 220 * Helper that runs code in a child process. 221 * 222 * First, parent_func runs in the parent process. 223 * Then, child_func runs in the child process, dropping privileges if 224 * desired. 225 * Finally, fusetest_fork returns. 226 * 227 * # Returns 228 * 229 * fusetest_fork may SKIP the test, which the caller should detect with 230 * the IsSkipped() method. If not, then the child's exit status will 231 * be returned in status. 232 */ 233 void fork(bool drop_privs, int *status, 234 std::function<void()> parent_func, 235 std::function<int()> child_func); 236 237 /* 238 * Deliberately leak a file descriptor. 239 * 240 * Closing a file descriptor on fusefs would cause the server to 241 * receive FUSE_CLOSE and possibly FUSE_INACTIVE. Handling those 242 * operations would needlessly complicate most tests. So most tests 243 * deliberately leak the file descriptors instead. This method serves 244 * to document the leakage, and provide a single point of suppression 245 * for static analyzers. 246 */ 247 /* coverity[+close: arg-0] */ 248 static void leak(int fd __unused) {} 249 250 /* 251 * Deliberately leak a DIR* pointer 252 * 253 * See comments for FuseTest::leak 254 */ 255 static void leakdir(DIR* dirp __unused) {} 256 }; 257