diff options
Diffstat (limited to 'tests/sys/fs/fusefs/dev_fuse_poll.cc')
| -rw-r--r-- | tests/sys/fs/fusefs/dev_fuse_poll.cc | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/tests/sys/fs/fusefs/dev_fuse_poll.cc b/tests/sys/fs/fusefs/dev_fuse_poll.cc new file mode 100644 index 000000000000..181cd69de665 --- /dev/null +++ b/tests/sys/fs/fusefs/dev_fuse_poll.cc @@ -0,0 +1,229 @@ +/*- + * 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. + */ + +/* + * This file tests different polling methods for the /dev/fuse device + */ + +extern "C" { +#include <fcntl.h> +#include <semaphore.h> +#include <unistd.h> +} + +#include "mockfs.hh" +#include "utils.hh" + +using namespace testing; + +const char FULLPATH[] = "mountpoint/some_file.txt"; +const char RELPATH[] = "some_file.txt"; +const uint64_t ino = 42; +const mode_t access_mode = R_OK; + +/* + * Translate a poll method's string representation to the enum value. + * Using strings with ::testing::Values gives better output with + * --gtest_list_tests + */ +enum poll_method poll_method_from_string(const char *s) +{ + if (0 == strcmp("BLOCKING", s)) + return BLOCKING; + else if (0 == strcmp("KQ", s)) + return KQ; + else if (0 == strcmp("POLL", s)) + return POLL; + else + return SELECT; +} + +class DevFusePoll: public FuseTest, public WithParamInterface<const char *> { + virtual void SetUp() { + m_pm = poll_method_from_string(GetParam()); + FuseTest::SetUp(); + } +}; + +class Kqueue: public FuseTest { + virtual void SetUp() { + m_pm = KQ; + FuseTest::SetUp(); + } +}; + +TEST_P(DevFusePoll, access) +{ + expect_access(FUSE_ROOT_ID, X_OK, 0); + expect_lookup(RELPATH, ino, S_IFREG | 0644, 0, 1); + expect_access(ino, access_mode, 0); + + ASSERT_EQ(0, access(FULLPATH, access_mode)) << strerror(errno); +} + +/* Ensure that we wake up pollers during unmount */ +TEST_P(DevFusePoll, destroy) +{ + expect_destroy(0); + + m_mock->unmount(); +} + +INSTANTIATE_TEST_SUITE_P(PM, DevFusePoll, + ::testing::Values("BLOCKING", "KQ", "POLL", "SELECT")); + +static void* statter(void* arg) { + const char *name; + struct stat sb; + + name = (const char*)arg; + return ((void*)(intptr_t)stat(name, &sb)); +} + +/* + * A kevent's data field should contain the number of operations available to + * be immediately read. + */ +TEST_F(Kqueue, data) +{ + pthread_t th0, th1, th2; + sem_t sem0, sem1; + int nready0, nready1, nready2; + uint64_t foo_ino = 42; + uint64_t bar_ino = 43; + uint64_t baz_ino = 44; + Sequence seq; + void *th_ret; + + ASSERT_EQ(0, sem_init(&sem0, 0, 0)) << strerror(errno); + ASSERT_EQ(0, sem_init(&sem1, 0, 0)) << strerror(errno); + + EXPECT_LOOKUP(FUSE_ROOT_ID, "foo") + .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { + SET_OUT_HEADER_LEN(out, entry); + out.body.entry.entry_valid = UINT64_MAX; + out.body.entry.attr.mode = S_IFREG | 0644; + out.body.entry.nodeid = foo_ino; + }))); + EXPECT_LOOKUP(FUSE_ROOT_ID, "bar") + .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { + SET_OUT_HEADER_LEN(out, entry); + out.body.entry.entry_valid = UINT64_MAX; + out.body.entry.attr.mode = S_IFREG | 0644; + out.body.entry.nodeid = bar_ino; + }))); + EXPECT_LOOKUP(FUSE_ROOT_ID, "baz") + .WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { + SET_OUT_HEADER_LEN(out, entry); + out.body.entry.entry_valid = UINT64_MAX; + out.body.entry.attr.mode = S_IFREG | 0644; + out.body.entry.nodeid = baz_ino; + }))); + + EXPECT_CALL(*m_mock, process( + ResultOf([=](auto in) { + return (in.header.opcode == FUSE_GETATTR && + in.header.nodeid == foo_ino); + }, Eq(true)), + _) + ) + .WillOnce(Invoke(ReturnImmediate([&](auto in, auto& out) { + nready0 = m_mock->m_nready; + + sem_post(&sem0); + // Block the daemon so we can accumulate a few more ops + sem_wait(&sem1); + + out.header.unique = in.header.unique; + out.header.error = -EIO; + out.header.len = sizeof(out.header); + }))); + + EXPECT_CALL(*m_mock, process( + ResultOf([=](auto in) { + return (in.header.opcode == FUSE_GETATTR && + (in.header.nodeid == bar_ino || + in.header.nodeid == baz_ino)); + }, Eq(true)), + _) + ).InSequence(seq) + .WillOnce(Invoke(ReturnImmediate([&](auto in, auto& out) { + nready1 = m_mock->m_nready; + out.header.unique = in.header.unique; + out.header.error = -EIO; + out.header.len = sizeof(out.header); + }))); + EXPECT_CALL(*m_mock, process( + ResultOf([=](auto in) { + return (in.header.opcode == FUSE_GETATTR && + (in.header.nodeid == bar_ino || + in.header.nodeid == baz_ino)); + }, Eq(true)), + _) + ).InSequence(seq) + .WillOnce(Invoke(ReturnImmediate([&](auto in, auto& out) { + nready2 = m_mock->m_nready; + out.header.unique = in.header.unique; + out.header.error = -EIO; + out.header.len = sizeof(out.header); + }))); + + /* + * Create cached lookup entries for these files. It seems that only + * one thread at a time can be in VOP_LOOKUP for a given directory + */ + access("mountpoint/foo", F_OK); + access("mountpoint/bar", F_OK); + access("mountpoint/baz", F_OK); + ASSERT_EQ(0, pthread_create(&th0, NULL, statter, + __DECONST(void*, "mountpoint/foo"))) << strerror(errno); + EXPECT_EQ(0, sem_wait(&sem0)) << strerror(errno); + ASSERT_EQ(0, pthread_create(&th1, NULL, statter, + __DECONST(void*, "mountpoint/bar"))) << strerror(errno); + ASSERT_EQ(0, pthread_create(&th2, NULL, statter, + __DECONST(void*, "mountpoint/baz"))) << strerror(errno); + + nap(); // Allow th1 and th2 to send their ops to the daemon + EXPECT_EQ(0, sem_post(&sem1)) << strerror(errno); + + pthread_join(th0, &th_ret); + ASSERT_EQ(-1, (intptr_t)th_ret); + pthread_join(th1, &th_ret); + ASSERT_EQ(-1, (intptr_t)th_ret); + pthread_join(th2, &th_ret); + ASSERT_EQ(-1, (intptr_t)th_ret); + + EXPECT_EQ(1, nready0); + EXPECT_EQ(2, nready1); + EXPECT_EQ(1, nready2); + + sem_destroy(&sem0); + sem_destroy(&sem1); +} |