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Diffstat (limited to 'tests/sys/fs/fusefs/symlink.cc')
| -rw-r--r-- | tests/sys/fs/fusefs/symlink.cc | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/tests/sys/fs/fusefs/symlink.cc b/tests/sys/fs/fusefs/symlink.cc new file mode 100644 index 000000000000..bd355497a8bd --- /dev/null +++ b/tests/sys/fs/fusefs/symlink.cc @@ -0,0 +1,208 @@ +/*- + * 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 <semaphore.h> +#include <unistd.h> +} + +#include "mockfs.hh" +#include "utils.hh" + +using namespace testing; + +class Symlink: public FuseTest { +public: + +void expect_symlink(uint64_t ino, const char *target, const char *relpath) +{ + EXPECT_CALL(*m_mock, process( + ResultOf([=](auto in) { + const char *name = (const char*)in.body.bytes; + const char *linkname = name + strlen(name) + 1; + return (in.header.opcode == FUSE_SYMLINK && + (0 == strcmp(linkname, target)) && + (0 == strcmp(name, relpath))); + }, Eq(true)), + _) + ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { + SET_OUT_HEADER_LEN(out, entry); + out.body.entry.attr.mode = S_IFLNK | 0777; + out.body.entry.nodeid = ino; + out.body.entry.entry_valid = UINT64_MAX; + out.body.entry.attr_valid = UINT64_MAX; + }))); +} + +}; + +class Symlink_7_8: public FuseTest { +public: +virtual void SetUp() { + m_kernel_minor_version = 8; + FuseTest::SetUp(); +} + +void expect_symlink(uint64_t ino, const char *target, const char *relpath) +{ + EXPECT_CALL(*m_mock, process( + ResultOf([=](auto in) { + const char *name = (const char*)in.body.bytes; + const char *linkname = name + strlen(name) + 1; + return (in.header.opcode == FUSE_SYMLINK && + (0 == strcmp(linkname, target)) && + (0 == strcmp(name, relpath))); + }, Eq(true)), + _) + ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto& out) { + SET_OUT_HEADER_LEN(out, entry_7_8); + out.body.entry.attr.mode = S_IFLNK | 0777; + out.body.entry.nodeid = ino; + out.body.entry.entry_valid = UINT64_MAX; + out.body.entry.attr_valid = UINT64_MAX; + }))); +} + +}; + +/* + * A successful symlink should clear the parent directory's attribute cache, + * because the fuse daemon should update its mtime and ctime + */ +TEST_F(Symlink, clear_attr_cache) +{ + const char FULLPATH[] = "mountpoint/src"; + const char RELPATH[] = "src"; + const char dst[] = "dst"; + const uint64_t ino = 42; + struct stat sb; + + EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) + .WillOnce(Invoke(ReturnErrno(ENOENT))); + EXPECT_CALL(*m_mock, process( + ResultOf([=](auto in) { + return (in.header.opcode == FUSE_GETATTR && + in.header.nodeid == FUSE_ROOT_ID); + }, Eq(true)), + _) + ).Times(2) + .WillRepeatedly(Invoke(ReturnImmediate([=](auto i __unused, auto& out) { + SET_OUT_HEADER_LEN(out, attr); + out.body.attr.attr.ino = FUSE_ROOT_ID; + out.body.attr.attr.mode = S_IFDIR | 0755; + out.body.attr.attr_valid = UINT64_MAX; + }))); + expect_symlink(ino, dst, RELPATH); + + EXPECT_EQ(0, stat("mountpoint", &sb)) << strerror(errno); + EXPECT_EQ(0, symlink(dst, FULLPATH)) << strerror(errno); + EXPECT_EQ(0, stat("mountpoint", &sb)) << strerror(errno); +} + +TEST_F(Symlink, enospc) +{ + const char FULLPATH[] = "mountpoint/lnk"; + const char RELPATH[] = "lnk"; + const char dst[] = "dst"; + + EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) + .WillOnce(Invoke(ReturnErrno(ENOENT))); + + EXPECT_CALL(*m_mock, process( + ResultOf([=](auto in) { + const char *name = (const char*)in.body.bytes; + const char *linkname = name + strlen(name) + 1; + return (in.header.opcode == FUSE_SYMLINK && + (0 == strcmp(linkname, dst)) && + (0 == strcmp(name, RELPATH))); + }, Eq(true)), + _) + ).WillOnce(Invoke(ReturnErrno(ENOSPC))); + + EXPECT_EQ(-1, symlink(dst, FULLPATH)); + EXPECT_EQ(ENOSPC, errno); +} + +TEST_F(Symlink, ok) +{ + const char FULLPATH[] = "mountpoint/src"; + const char RELPATH[] = "src"; + const char dst[] = "dst"; + const uint64_t ino = 42; + + EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) + .WillOnce(Invoke(ReturnErrno(ENOENT))); + expect_symlink(ino, dst, RELPATH); + + EXPECT_EQ(0, symlink(dst, FULLPATH)) << strerror(errno); +} + +/* + * Nothing bad should happen if the server returns the parent's inode number + * for the newly created symlink. Regression test for bug 263662. + * https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263662 + */ +TEST_F(Symlink, parent_ino) +{ + const char FULLPATH[] = "mountpoint/parent/src"; + const char PPATH[] = "parent"; + const char RELPATH[] = "src"; + const char dst[] = "dst"; + sem_t sem; + const uint64_t ino = 42; + + ASSERT_EQ(0, sem_init(&sem, 0, 0)) << strerror(errno); + + expect_lookup(PPATH, ino, S_IFDIR | 0755, 0, 1); + EXPECT_LOOKUP(ino, RELPATH) + .WillOnce(Invoke(ReturnErrno(ENOENT))); + expect_symlink(ino, dst, RELPATH); + expect_forget(ino, 1, &sem); + + EXPECT_EQ(-1, symlink(dst, FULLPATH)); + EXPECT_EQ(EIO, errno); + + sem_wait(&sem); + sem_destroy(&sem); +} + +TEST_F(Symlink_7_8, ok) +{ + const char FULLPATH[] = "mountpoint/src"; + const char RELPATH[] = "src"; + const char dst[] = "dst"; + const uint64_t ino = 42; + + EXPECT_LOOKUP(FUSE_ROOT_ID, RELPATH) + .WillOnce(Invoke(ReturnErrno(ENOENT))); + expect_symlink(ino, dst, RELPATH); + + EXPECT_EQ(0, symlink(dst, FULLPATH)) << strerror(errno); +} |