diff options
Diffstat (limited to 'tests/sys/fs/fusefs/opendir.cc')
| -rw-r--r-- | tests/sys/fs/fusefs/opendir.cc | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/tests/sys/fs/fusefs/opendir.cc b/tests/sys/fs/fusefs/opendir.cc new file mode 100644 index 000000000000..e1fed59635fc --- /dev/null +++ b/tests/sys/fs/fusefs/opendir.cc @@ -0,0 +1,197 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2019 The FreeBSD Foundation + * + * This software was developed by BFF Storage Systems, LLC under sponsorship + * from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +extern "C" { +#include <dirent.h> + +#include <fcntl.h> +#include <semaphore.h> +} + +#include "mockfs.hh" +#include "utils.hh" + +using namespace testing; + +class Opendir: public FuseTest { +public: +void expect_lookup(const char *relpath, uint64_t ino) +{ + FuseTest::expect_lookup(relpath, ino, S_IFDIR | 0755, 0, 1); +} + +void expect_opendir(uint64_t ino, uint32_t flags, ProcessMockerT r) +{ + /* opendir(3) calls fstatfs */ + EXPECT_CALL(*m_mock, process( + ResultOf([](auto in) { + return (in.header.opcode == FUSE_STATFS); + }, Eq(true)), + _) + ).WillRepeatedly(Invoke(ReturnImmediate([=](auto i __unused, auto& out) { + SET_OUT_HEADER_LEN(out, statfs); + }))); + + EXPECT_CALL(*m_mock, process( + ResultOf([=](auto in) { + return (in.header.opcode == FUSE_OPENDIR && + in.header.nodeid == ino && + in.body.opendir.flags == flags); + }, Eq(true)), + _) + ).WillOnce(Invoke(r)); +} + +}; + + +/* + * The fuse daemon fails the request with enoent. This usually indicates a + * race condition: some other FUSE client removed the file in between when the + * kernel checked for it with lookup and tried to open it + */ +TEST_F(Opendir, enoent) +{ + const char FULLPATH[] = "mountpoint/some_dir"; + const char RELPATH[] = "some_dir"; + uint64_t ino = 42; + sem_t sem; + + ASSERT_EQ(0, sem_init(&sem, 0, 0)) << strerror(errno); + + expect_lookup(RELPATH, ino); + expect_opendir(ino, O_RDONLY, ReturnErrno(ENOENT)); + // Since FUSE_OPENDIR returns ENOENT, the kernel will reclaim the vnode + // and send a FUSE_FORGET + expect_forget(ino, 1, &sem); + + ASSERT_EQ(-1, open(FULLPATH, O_DIRECTORY)); + EXPECT_EQ(ENOENT, errno); + + sem_wait(&sem); + sem_destroy(&sem); +} + +/* + * The daemon is responsible for checking file permissions (unless the + * default_permissions mount option was used) + */ +TEST_F(Opendir, eperm) +{ + const char FULLPATH[] = "mountpoint/some_dir"; + const char RELPATH[] = "some_dir"; + uint64_t ino = 42; + + expect_lookup(RELPATH, ino); + expect_opendir(ino, O_RDONLY, ReturnErrno(EPERM)); + + EXPECT_EQ(-1, open(FULLPATH, O_DIRECTORY)); + EXPECT_EQ(EPERM, errno); +} + +TEST_F(Opendir, open) +{ + const char FULLPATH[] = "mountpoint/some_dir"; + const char RELPATH[] = "some_dir"; + uint64_t ino = 42; + int fd; + + expect_lookup(RELPATH, ino); + expect_opendir(ino, O_RDONLY, + ReturnImmediate([=](auto in __unused, auto& out) { + SET_OUT_HEADER_LEN(out, open); + })); + + fd = open(FULLPATH, O_DIRECTORY); + ASSERT_LE(0, fd) << strerror(errno); + + leak(fd); +} + +/* Directories can be opened O_EXEC for stuff like fchdir(2) */ +TEST_F(Opendir, open_exec) +{ + const char FULLPATH[] = "mountpoint/some_dir"; + const char RELPATH[] = "some_dir"; + uint64_t ino = 42; + int fd; + + expect_lookup(RELPATH, ino); + expect_opendir(ino, O_EXEC, + ReturnImmediate([=](auto in __unused, auto& out) { + SET_OUT_HEADER_LEN(out, open); + })); + + fd = open(FULLPATH, O_EXEC | O_DIRECTORY); + ASSERT_LE(0, fd) << strerror(errno); + + leak(fd); +} + +TEST_F(Opendir, opendir) +{ + const char FULLPATH[] = "mountpoint/some_dir"; + const char RELPATH[] = "some_dir"; + uint64_t ino = 42; + + expect_lookup(RELPATH, ino); + expect_opendir(ino, O_RDONLY, + ReturnImmediate([=](auto in __unused, auto& out) { + SET_OUT_HEADER_LEN(out, open); + })); + + errno = 0; + EXPECT_NE(nullptr, opendir(FULLPATH)) << strerror(errno); +} + +/* + * If a fuse server returns ENOSYS to a + * FUSE_OPENDIR, then it and subsequent FUSE_OPENDIR and FUSE_RELEASEDIR + * operations will also succeed automatically without being sent to the server. + */ +TEST_F(Opendir, enosys) +{ + const char FULLPATH[] = "mountpoint/some_file.txt"; + const char RELPATH[] = "some_file.txt"; + uint64_t ino = 42; + int fd; + + FuseTest::expect_lookup(RELPATH, ino, S_IFDIR | 0755, 0, 2); + expect_opendir(ino, O_RDONLY, ReturnErrno(ENOSYS)); + + fd = open(FULLPATH, O_DIRECTORY); + ASSERT_LE(0, fd) << strerror(errno); + close(fd); + + fd = open(FULLPATH, O_DIRECTORY); + ASSERT_LE(0, fd) << strerror(errno); + + leak(fd); +} |