fuse(4): add tests for FUSE_READ
PR: 236379 PR: 236466 PR: 236472 Sponsored by: The FreeBSD Foundation
This commit is contained in:
parent
e071c64b4c
commit
e825cfb775
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/projects/fuse2/; revision=345017
@ -13,6 +13,7 @@ ATF_TESTS_CXX+= lookup
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ATF_TESTS_CXX+= mkdir
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ATF_TESTS_CXX+= mknod
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ATF_TESTS_CXX+= open
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ATF_TESTS_CXX+= read
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ATF_TESTS_CXX+= readlink
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ATF_TESTS_CXX+= release
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ATF_TESTS_CXX+= rename
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@ -68,6 +69,11 @@ SRCS.open+= mockfs.cc
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SRCS.open+= open.cc
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SRCS.open+= utils.cc
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SRCS.read+= getmntopts.c
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SRCS.read+= mockfs.cc
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SRCS.read+= read.cc
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SRCS.read+= utils.cc
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SRCS.readlink+= getmntopts.c
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SRCS.readlink+= mockfs.cc
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SRCS.readlink+= readlink.cc
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@ -165,12 +165,13 @@ void debug_fuseop(const mockfs_buf_in *in)
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printf("\n");
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}
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MockFS::MockFS() {
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MockFS::MockFS(int max_readahead) {
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struct iovec *iov = NULL;
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int iovlen = 0;
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char fdstr[15];
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m_daemon_id = NULL;
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m_maxreadahead = max_readahead;
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quit = 0;
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/*
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@ -247,8 +248,7 @@ void MockFS::init() {
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m_max_write = MIN(default_max_write, MAXPHYS / 2);
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out->body.init.max_write = m_max_write;
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/* Default max_readahead is UINT_MAX, though it can be lowered */
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out->body.init.max_readahead = UINT_MAX;
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out->body.init.max_readahead = m_maxreadahead;
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SET_OUT_HEADER_LEN(out, init);
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write(m_fuse_fd, out, out->header.len);
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@ -99,7 +99,7 @@ union fuse_payloads_out {
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fuse_attr_out attr;
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fuse_create_out create;
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/* The protocol places no limits on the size of bytes */
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uint8_t bytes[0x2000];
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uint8_t bytes[0x20000];
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fuse_entry_out entry;
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fuse_init_out init;
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fuse_open_out open;
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@ -152,6 +152,9 @@ class MockFS {
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/* file descriptor of /dev/fuse control device */
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int m_fuse_fd;
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/* The max_readahead filesystem option */
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uint32_t m_maxreadahead;
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/* pid of the test process */
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pid_t m_pid;
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@ -175,7 +178,7 @@ class MockFS {
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uint32_t m_max_write;
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/* Create a new mockfs and mount it to a tempdir */
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MockFS();
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MockFS(int max_readahead);
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virtual ~MockFS();
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/* Kill the filesystem daemon without unmounting the filesystem */
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566
tests/sys/fs/fuse/read.cc
Normal file
566
tests/sys/fs/fuse/read.cc
Normal file
@ -0,0 +1,566 @@
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/*-
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* Copyright (c) 2019 The FreeBSD Foundation
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*
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* This software was developed by BFF Storage Systems, LLC under sponsorship
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* from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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extern "C" {
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/uio.h>
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#include <aio.h>
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#include <fcntl.h>
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#include <unistd.h>
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}
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#include "mockfs.hh"
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#include "utils.hh"
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using namespace testing;
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class Read: public FuseTest {
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public:
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const static uint64_t FH = 0xdeadbeef1a7ebabe;
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void expect_getattr(uint64_t ino, uint64_t size)
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{
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/* Until the attr cache is working, we may send an additional GETATTR */
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EXPECT_CALL(*m_mock, process(
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ResultOf([=](auto in) {
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return (in->header.opcode == FUSE_GETATTR &&
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in->header.nodeid == ino);
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}, Eq(true)),
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_)
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).WillRepeatedly(Invoke([=](auto in, auto out) {
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out->header.unique = in->header.unique;
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SET_OUT_HEADER_LEN(out, attr);
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out->body.attr.attr.ino = ino; // Must match nodeid
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out->body.attr.attr.mode = S_IFREG | 0644;
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out->body.attr.attr.size = size;
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}));
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}
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void expect_lookup(const char *relpath, uint64_t ino)
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{
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EXPECT_LOOKUP(1, relpath).WillRepeatedly(Invoke([=](auto in, auto out) {
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out->header.unique = in->header.unique;
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SET_OUT_HEADER_LEN(out, entry);
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out->body.entry.attr.mode = S_IFREG | 0644;
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out->body.entry.nodeid = ino;
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out->body.entry.attr_valid = UINT64_MAX;
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}));
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}
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void expect_open(uint64_t ino, uint32_t flags, int times)
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{
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EXPECT_CALL(*m_mock, process(
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ResultOf([=](auto in) {
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return (in->header.opcode == FUSE_OPEN &&
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in->header.nodeid == ino);
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}, Eq(true)),
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_)
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).Times(times)
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.WillRepeatedly(Invoke([=](auto in, auto out) {
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out->header.unique = in->header.unique;
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out->header.len = sizeof(out->header);
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SET_OUT_HEADER_LEN(out, open);
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out->body.open.fh = Read::FH;
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out->body.open.open_flags = flags;
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}));
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}
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void expect_read(uint64_t ino, uint64_t offset, uint64_t isize, uint64_t osize,
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const void *contents)
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{
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EXPECT_CALL(*m_mock, process(
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ResultOf([=](auto in) {
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return (in->header.opcode == FUSE_READ &&
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in->header.nodeid == ino &&
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in->body.read.fh == Read::FH &&
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in->body.read.offset == offset &&
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in->body.read.size == isize);
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}, Eq(true)),
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_)
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).WillOnce(Invoke([=](auto in, auto out) {
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out->header.unique = in->header.unique;
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out->header.len = sizeof(struct fuse_out_header) + osize;
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memmove(out->body.bytes, contents, osize);
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})).RetiresOnSaturation();
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}
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};
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class AioRead: public Read {
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virtual void SetUp() {
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const char *node = "vfs.aio.enable_unsafe";
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int val = 0;
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size_t size = sizeof(val);
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ASSERT_EQ(0, sysctlbyname(node, &val, &size, NULL, 0))
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<< strerror(errno);
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// TODO: With GoogleTest 1.8.2, use SKIP instead
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if (!val)
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FAIL() << "vfs.aio.enable_unsafe must be set for this test";
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FuseTest::SetUp();
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}
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};
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class ReadAhead: public Read, public WithParamInterface<uint32_t> {
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virtual void SetUp() {
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m_maxreadahead = GetParam();
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Read::SetUp();
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}
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};
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/* AIO reads need to set the header's pid field correctly */
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/* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236379 */
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TEST_F(AioRead, aio_read)
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{
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const char FULLPATH[] = "mountpoint/some_file.txt";
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const char RELPATH[] = "some_file.txt";
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const char *CONTENTS = "abcdefgh";
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uint64_t ino = 42;
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int fd;
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ssize_t bufsize = strlen(CONTENTS);
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char buf[bufsize];
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struct aiocb iocb, *piocb;
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expect_lookup(RELPATH, ino);
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expect_open(ino, 0, 1);
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expect_getattr(ino, bufsize);
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expect_read(ino, 0, bufsize, bufsize, CONTENTS);
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fd = open(FULLPATH, O_RDONLY);
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ASSERT_LE(0, fd) << strerror(errno);
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iocb.aio_nbytes = bufsize;
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iocb.aio_fildes = fd;
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iocb.aio_buf = buf;
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iocb.aio_offset = 0;
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iocb.aio_sigevent.sigev_notify = SIGEV_NONE;
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ASSERT_EQ(0, aio_read(&iocb)) << strerror(errno);
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ASSERT_EQ(bufsize, aio_waitcomplete(&piocb, NULL)) << strerror(errno);
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ASSERT_EQ(0, memcmp(buf, CONTENTS, bufsize));
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/* Deliberately leak fd. close(2) will be tested in release.cc */
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}
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/* 0-length reads shouldn't cause any confusion */
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TEST_F(Read, direct_io_read_nothing)
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{
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const char FULLPATH[] = "mountpoint/some_file.txt";
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const char RELPATH[] = "some_file.txt";
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uint64_t ino = 42;
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int fd;
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uint64_t offset = 100;
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char buf[80];
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expect_lookup(RELPATH, ino);
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expect_open(ino, FOPEN_DIRECT_IO, 1);
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expect_getattr(ino, offset + 1000);
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fd = open(FULLPATH, O_RDONLY);
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ASSERT_LE(0, fd) << strerror(errno);
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ASSERT_EQ(0, pread(fd, buf, 0, offset)) << strerror(errno);
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/* Deliberately leak fd. close(2) will be tested in release.cc */
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}
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/*
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* With direct_io, reads should not fill the cache. They should go straight to
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* the daemon
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*/
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TEST_F(Read, direct_io_pread)
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{
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const char FULLPATH[] = "mountpoint/some_file.txt";
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const char RELPATH[] = "some_file.txt";
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const char *CONTENTS = "abcdefgh";
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uint64_t ino = 42;
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int fd;
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uint64_t offset = 100;
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ssize_t bufsize = strlen(CONTENTS);
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char buf[bufsize];
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expect_lookup(RELPATH, ino);
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expect_open(ino, FOPEN_DIRECT_IO, 1);
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expect_getattr(ino, offset + bufsize);
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expect_read(ino, offset, bufsize, bufsize, CONTENTS);
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fd = open(FULLPATH, O_RDONLY);
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ASSERT_LE(0, fd) << strerror(errno);
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ASSERT_EQ(bufsize, pread(fd, buf, bufsize, offset)) << strerror(errno);
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ASSERT_EQ(0, memcmp(buf, CONTENTS, bufsize));
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/* Deliberately leak fd. close(2) will be tested in release.cc */
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}
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/*
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* With direct_io, filesystems are allowed to return less data than is
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* requested. fuse(4) should return a short read to userland.
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*/
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TEST_F(Read, direct_io_short_read)
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{
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const char FULLPATH[] = "mountpoint/some_file.txt";
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const char RELPATH[] = "some_file.txt";
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const char *CONTENTS = "abcdefghijklmnop";
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uint64_t ino = 42;
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int fd;
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uint64_t offset = 100;
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ssize_t bufsize = strlen(CONTENTS);
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ssize_t halfbufsize = bufsize / 2;
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char buf[bufsize];
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expect_lookup(RELPATH, ino);
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expect_open(ino, FOPEN_DIRECT_IO, 1);
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expect_getattr(ino, offset + bufsize);
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expect_read(ino, offset, bufsize, halfbufsize, CONTENTS);
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fd = open(FULLPATH, O_RDONLY);
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ASSERT_LE(0, fd) << strerror(errno);
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ASSERT_EQ(halfbufsize, pread(fd, buf, bufsize, offset))
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<< strerror(errno);
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ASSERT_EQ(0, memcmp(buf, CONTENTS, halfbufsize));
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/* Deliberately leak fd. close(2) will be tested in release.cc */
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}
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TEST_F(Read, eio)
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{
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const char FULLPATH[] = "mountpoint/some_file.txt";
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const char RELPATH[] = "some_file.txt";
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const char *CONTENTS = "abcdefgh";
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uint64_t ino = 42;
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int fd;
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ssize_t bufsize = strlen(CONTENTS);
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char buf[bufsize];
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expect_lookup(RELPATH, ino);
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expect_open(ino, 0, 1);
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expect_getattr(ino, bufsize);
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EXPECT_CALL(*m_mock, process(
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ResultOf([=](auto in) {
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return (in->header.opcode == FUSE_READ);
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}, Eq(true)),
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_)
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).WillOnce(Invoke(ReturnErrno(EIO)));
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fd = open(FULLPATH, O_RDONLY);
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ASSERT_LE(0, fd) << strerror(errno);
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ASSERT_EQ(-1, read(fd, buf, bufsize)) << strerror(errno);
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ASSERT_EQ(EIO, errno);
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/* Deliberately leak fd. close(2) will be tested in release.cc */
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}
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TEST_F(Read, mmap)
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{
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const char FULLPATH[] = "mountpoint/some_file.txt";
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const char RELPATH[] = "some_file.txt";
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const char *CONTENTS = "abcdefgh";
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uint64_t ino = 42;
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int fd;
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ssize_t len;
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ssize_t bufsize = strlen(CONTENTS);
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void *p;
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//char buf[bufsize];
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len = getpagesize();
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expect_lookup(RELPATH, ino);
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expect_open(ino, 0, 1);
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expect_getattr(ino, bufsize);
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/* mmap may legitimately try to read more data than is available */
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EXPECT_CALL(*m_mock, process(
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ResultOf([=](auto in) {
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return (in->header.opcode == FUSE_READ &&
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in->header.nodeid == ino &&
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in->body.read.fh == Read::FH &&
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in->body.read.offset == 0 &&
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in->body.read.size >= bufsize);
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}, Eq(true)),
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_)
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).WillOnce(Invoke([=](auto in, auto out) {
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out->header.unique = in->header.unique;
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out->header.len = sizeof(struct fuse_out_header) + bufsize;
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memmove(out->body.bytes, CONTENTS, bufsize);
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}));
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fd = open(FULLPATH, O_RDONLY);
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ASSERT_LE(0, fd) << strerror(errno);
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p = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, 0);
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ASSERT_NE(MAP_FAILED, p) << strerror(errno);
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ASSERT_EQ(0, memcmp(p, CONTENTS, bufsize));
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ASSERT_EQ(0, munmap(p, len)) << strerror(errno);
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/* Deliberately leak fd. close(2) will be tested in release.cc */
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}
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/*
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* Just as when FOPEN_DIRECT_IO is used, reads with O_DIRECT should bypass
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* cache and to straight to the daemon
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*/
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TEST_F(Read, o_direct)
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{
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const char FULLPATH[] = "mountpoint/some_file.txt";
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const char RELPATH[] = "some_file.txt";
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const char *CONTENTS = "abcdefgh";
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uint64_t ino = 42;
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int fd;
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ssize_t bufsize = strlen(CONTENTS);
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char buf[bufsize];
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expect_lookup(RELPATH, ino);
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expect_open(ino, 0, 1);
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expect_getattr(ino, bufsize);
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expect_read(ino, 0, bufsize, bufsize, CONTENTS);
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fd = open(FULLPATH, O_RDONLY);
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ASSERT_LE(0, fd) << strerror(errno);
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// Fill the cache
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ASSERT_EQ(bufsize, read(fd, buf, bufsize)) << strerror(errno);
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ASSERT_EQ(0, memcmp(buf, CONTENTS, bufsize));
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// Reads with o_direct should bypass the cache
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expect_read(ino, 0, bufsize, bufsize, CONTENTS);
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ASSERT_EQ(0, fcntl(fd, F_SETFL, O_DIRECT)) << strerror(errno);
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ASSERT_EQ(0, lseek(fd, 0, SEEK_SET)) << strerror(errno);
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ASSERT_EQ(bufsize, read(fd, buf, bufsize)) << strerror(errno);
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ASSERT_EQ(0, memcmp(buf, CONTENTS, bufsize));
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/* Deliberately leak fd. close(2) will be tested in release.cc */
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}
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TEST_F(Read, pread)
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{
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const char FULLPATH[] = "mountpoint/some_file.txt";
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const char RELPATH[] = "some_file.txt";
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const char *CONTENTS = "abcdefgh";
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uint64_t ino = 42;
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int fd;
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/*
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* Set offset to a maxbcachebuf boundary so we'll be sure what offset
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* to read from. Without this, the read might start at a lower offset.
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*/
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uint64_t offset = m_maxbcachebuf;
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ssize_t bufsize = strlen(CONTENTS);
|
||||
char buf[bufsize];
|
||||
|
||||
expect_lookup(RELPATH, ino);
|
||||
expect_open(ino, 0, 1);
|
||||
expect_getattr(ino, offset + bufsize);
|
||||
expect_read(ino, offset, bufsize, bufsize, CONTENTS);
|
||||
|
||||
fd = open(FULLPATH, O_RDONLY);
|
||||
ASSERT_LE(0, fd) << strerror(errno);
|
||||
|
||||
ASSERT_EQ(bufsize, pread(fd, buf, bufsize, offset)) << strerror(errno);
|
||||
ASSERT_EQ(0, memcmp(buf, CONTENTS, bufsize));
|
||||
/* Deliberately leak fd. close(2) will be tested in release.cc */
|
||||
}
|
||||
|
||||
TEST_F(Read, read)
|
||||
{
|
||||
const char FULLPATH[] = "mountpoint/some_file.txt";
|
||||
const char RELPATH[] = "some_file.txt";
|
||||
const char *CONTENTS = "abcdefgh";
|
||||
uint64_t ino = 42;
|
||||
int fd;
|
||||
ssize_t bufsize = strlen(CONTENTS);
|
||||
char buf[bufsize];
|
||||
|
||||
expect_lookup(RELPATH, ino);
|
||||
expect_open(ino, 0, 1);
|
||||
expect_getattr(ino, bufsize);
|
||||
expect_read(ino, 0, bufsize, bufsize, CONTENTS);
|
||||
|
||||
fd = open(FULLPATH, O_RDONLY);
|
||||
ASSERT_LE(0, fd) << strerror(errno);
|
||||
|
||||
ASSERT_EQ(bufsize, read(fd, buf, bufsize)) << strerror(errno);
|
||||
ASSERT_EQ(0, memcmp(buf, CONTENTS, bufsize));
|
||||
/* Deliberately leak fd. close(2) will be tested in release.cc */
|
||||
}
|
||||
|
||||
/* If the filesystem allows it, the kernel should try to readahead */
|
||||
TEST_F(Read, default_readahead)
|
||||
{
|
||||
const char FULLPATH[] = "mountpoint/some_file.txt";
|
||||
const char RELPATH[] = "some_file.txt";
|
||||
const char *CONTENTS0 = "abcdefghijklmnop";
|
||||
uint64_t ino = 42;
|
||||
int fd;
|
||||
ssize_t bufsize = 8;
|
||||
/* hard-coded in fuse_internal.c */
|
||||
size_t default_maxreadahead = 65536;
|
||||
ssize_t filesize = default_maxreadahead * 2;
|
||||
char *contents;
|
||||
char buf[bufsize];
|
||||
const char *contents1 = CONTENTS0 + bufsize;
|
||||
|
||||
contents = (char*)calloc(1, filesize);
|
||||
ASSERT_NE(NULL, contents);
|
||||
memmove(contents, CONTENTS0, strlen(CONTENTS0));
|
||||
|
||||
expect_lookup(RELPATH, ino);
|
||||
expect_open(ino, 0, 1);
|
||||
expect_getattr(ino, filesize);
|
||||
expect_read(ino, 0, default_maxreadahead, default_maxreadahead,
|
||||
contents);
|
||||
|
||||
fd = open(FULLPATH, O_RDONLY);
|
||||
ASSERT_LE(0, fd) << strerror(errno);
|
||||
|
||||
ASSERT_EQ(bufsize, read(fd, buf, bufsize)) << strerror(errno);
|
||||
ASSERT_EQ(0, memcmp(buf, CONTENTS0, bufsize));
|
||||
|
||||
/* A subsequent read should be serviced by cache */
|
||||
ASSERT_EQ(bufsize, read(fd, buf, bufsize)) << strerror(errno);
|
||||
ASSERT_EQ(0, memcmp(buf, contents1, bufsize));
|
||||
/* Deliberately leak fd. close(2) will be tested in release.cc */
|
||||
}
|
||||
|
||||
/* Reading with sendfile should work (though it obviously won't be 0-copy) */
|
||||
TEST_F(Read, sendfile)
|
||||
{
|
||||
const char FULLPATH[] = "mountpoint/some_file.txt";
|
||||
const char RELPATH[] = "some_file.txt";
|
||||
const char *CONTENTS = "abcdefgh";
|
||||
uint64_t ino = 42;
|
||||
int fd;
|
||||
ssize_t bufsize = strlen(CONTENTS);
|
||||
char buf[bufsize];
|
||||
int sp[2];
|
||||
off_t sbytes;
|
||||
|
||||
expect_lookup(RELPATH, ino);
|
||||
expect_open(ino, 0, 1);
|
||||
expect_getattr(ino, bufsize);
|
||||
/* Like mmap, sendfile may request more data than is available */
|
||||
EXPECT_CALL(*m_mock, process(
|
||||
ResultOf([=](auto in) {
|
||||
return (in->header.opcode == FUSE_READ &&
|
||||
in->header.nodeid == ino &&
|
||||
in->body.read.fh == Read::FH &&
|
||||
in->body.read.offset == 0 &&
|
||||
in->body.read.size >= bufsize);
|
||||
}, Eq(true)),
|
||||
_)
|
||||
).WillOnce(Invoke([=](auto in, auto out) {
|
||||
out->header.unique = in->header.unique;
|
||||
out->header.len = sizeof(struct fuse_out_header) + bufsize;
|
||||
memmove(out->body.bytes, CONTENTS, bufsize);
|
||||
}));
|
||||
|
||||
ASSERT_EQ(0, socketpair(PF_LOCAL, SOCK_STREAM, 0, sp))
|
||||
<< strerror(errno);
|
||||
fd = open(FULLPATH, O_RDONLY);
|
||||
ASSERT_LE(0, fd) << strerror(errno);
|
||||
|
||||
ASSERT_EQ(0, sendfile(fd, sp[1], 0, bufsize, NULL, &sbytes, 0))
|
||||
<< strerror(errno);
|
||||
ASSERT_EQ(bufsize, read(sp[0], buf, bufsize)) << strerror(errno);
|
||||
ASSERT_EQ(0, memcmp(buf, CONTENTS, bufsize));
|
||||
|
||||
close(sp[1]);
|
||||
close(sp[0]);
|
||||
/* Deliberately leak fd. close(2) will be tested in release.cc */
|
||||
}
|
||||
|
||||
/* sendfile should fail gracefully if fuse declines the read */
|
||||
/* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236466 */
|
||||
TEST_F(Read, DISABLED_sendfile_eio)
|
||||
{
|
||||
const char FULLPATH[] = "mountpoint/some_file.txt";
|
||||
const char RELPATH[] = "some_file.txt";
|
||||
const char *CONTENTS = "abcdefgh";
|
||||
uint64_t ino = 42;
|
||||
int fd;
|
||||
ssize_t bufsize = strlen(CONTENTS);
|
||||
int sp[2];
|
||||
off_t sbytes;
|
||||
|
||||
expect_lookup(RELPATH, ino);
|
||||
expect_open(ino, 0, 1);
|
||||
expect_getattr(ino, bufsize);
|
||||
EXPECT_CALL(*m_mock, process(
|
||||
ResultOf([=](auto in) {
|
||||
return (in->header.opcode == FUSE_READ);
|
||||
}, Eq(true)),
|
||||
_)
|
||||
).WillOnce(Invoke(ReturnErrno(EIO)));
|
||||
|
||||
ASSERT_EQ(0, socketpair(PF_LOCAL, SOCK_STREAM, 0, sp))
|
||||
<< strerror(errno);
|
||||
fd = open(FULLPATH, O_RDONLY);
|
||||
ASSERT_LE(0, fd) << strerror(errno);
|
||||
|
||||
ASSERT_NE(0, sendfile(fd, sp[1], 0, bufsize, NULL, &sbytes, 0));
|
||||
|
||||
close(sp[1]);
|
||||
close(sp[0]);
|
||||
/* Deliberately leak fd. close(2) will be tested in release.cc */
|
||||
}
|
||||
|
||||
/* fuse(4) should honor the filesystem's requested m_readahead parameter */
|
||||
/* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236472 */
|
||||
TEST_P(ReadAhead, DISABLED_readahead) {
|
||||
const char FULLPATH[] = "mountpoint/some_file.txt";
|
||||
const char RELPATH[] = "some_file.txt";
|
||||
const char *CONTENTS0 = "abcdefghijklmnop";
|
||||
uint64_t ino = 42;
|
||||
int fd;
|
||||
ssize_t bufsize = 8;
|
||||
ssize_t filesize = m_maxbcachebuf * 2;
|
||||
char *contents;
|
||||
char buf[bufsize];
|
||||
|
||||
ASSERT_TRUE(GetParam() < (uint32_t)m_maxbcachebuf)
|
||||
<< "Test assumes that max_readahead < maxbcachebuf";
|
||||
|
||||
contents = (char*)calloc(1, filesize);
|
||||
ASSERT_NE(NULL, contents);
|
||||
memmove(contents, CONTENTS0, strlen(CONTENTS0));
|
||||
|
||||
expect_lookup(RELPATH, ino);
|
||||
expect_open(ino, 0, 1);
|
||||
expect_getattr(ino, filesize);
|
||||
/* fuse(4) should only read ahead the allowed amount */
|
||||
expect_read(ino, 0, GetParam(), GetParam(), contents);
|
||||
|
||||
fd = open(FULLPATH, O_RDONLY);
|
||||
ASSERT_LE(0, fd) << strerror(errno);
|
||||
|
||||
ASSERT_EQ(bufsize, read(fd, buf, bufsize)) << strerror(errno);
|
||||
ASSERT_EQ(0, memcmp(buf, CONTENTS0, bufsize));
|
||||
|
||||
/* Deliberately leak fd. close(2) will be tested in release.cc */
|
||||
}
|
||||
|
||||
INSTANTIATE_TEST_CASE_P(RA, ReadAhead, ::testing::Values(0u, 2048u));
|
@ -65,6 +65,22 @@ class FuseEnv: public ::testing::Environment {
|
||||
}
|
||||
};
|
||||
|
||||
void FuseTest::SetUp() {
|
||||
const char *node = "vfs.maxbcachebuf";
|
||||
int val = 0;
|
||||
size_t size = sizeof(val);
|
||||
|
||||
ASSERT_EQ(0, sysctlbyname(node, &val, &size, NULL, 0))
|
||||
<< strerror(errno);
|
||||
m_maxbcachebuf = val;
|
||||
|
||||
try {
|
||||
m_mock = new MockFS(m_maxreadahead);
|
||||
} catch (std::system_error err) {
|
||||
FAIL() << err.what();
|
||||
}
|
||||
}
|
||||
|
||||
static void usage(char* progname) {
|
||||
fprintf(stderr, "Usage: %s [-v]\n\t-v increase verbosity\n", progname);
|
||||
exit(2);
|
||||
|
@ -29,16 +29,20 @@
|
||||
|
||||
class FuseTest : public ::testing::Test {
|
||||
protected:
|
||||
uint32_t m_maxreadahead;
|
||||
MockFS *m_mock = NULL;
|
||||
|
||||
public:
|
||||
virtual void SetUp() {
|
||||
try {
|
||||
m_mock = new MockFS{};
|
||||
} catch (std::system_error err) {
|
||||
FAIL() << err.what();
|
||||
}
|
||||
}
|
||||
int m_maxbcachebuf;
|
||||
|
||||
/*
|
||||
* libfuse's default max_readahead is UINT_MAX, though it can be
|
||||
* lowered
|
||||
*/
|
||||
FuseTest(): FuseTest(UINT_MAX) {}
|
||||
FuseTest(uint32_t maxreadahead): m_maxreadahead(maxreadahead) {}
|
||||
|
||||
virtual void SetUp();
|
||||
|
||||
virtual void TearDown() {
|
||||
if (m_mock)
|
||||
|
@ -56,20 +56,6 @@ using namespace testing;
|
||||
class Write: public FuseTest {
|
||||
|
||||
public:
|
||||
int m_maxbcachebuf;
|
||||
|
||||
virtual void SetUp() {
|
||||
const char *node = "vfs.maxbcachebuf";
|
||||
int val = 0;
|
||||
size_t size = sizeof(val);
|
||||
|
||||
ASSERT_EQ(0, sysctlbyname(node, &val, &size, NULL, 0))
|
||||
<< strerror(errno);
|
||||
m_maxbcachebuf = val;
|
||||
|
||||
FuseTest::SetUp();
|
||||
}
|
||||
|
||||
const static uint64_t FH = 0xdeadbeef1a7ebabe;
|
||||
void expect_getattr(uint64_t ino, uint64_t size)
|
||||
{
|
||||
@ -137,7 +123,6 @@ void expect_read(uint64_t ino, uint64_t offset, uint64_t size,
|
||||
out->header.len = sizeof(struct fuse_out_header) + size;
|
||||
memmove(out->body.bytes, contents, size);
|
||||
})).RetiresOnSaturation();
|
||||
|
||||
}
|
||||
|
||||
void expect_release(uint64_t ino, ProcessMockerT r)
|
||||
|
Loading…
Reference in New Issue
Block a user