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123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
/*
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Test wrappers around POSIX functions.
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Copyright (c) 2012-2014, Victor Zverovich
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All rights reserved.
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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 are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "posix-test.h"
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#include <errno.h>
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#include <fcntl.h>
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#include "gtest-extra.h"
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namespace {
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int open_count;
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int close_count;
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int dup_count;
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int dup2_count;
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int fdopen_count;
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int fileno_count;
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int read_count;
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int write_count;
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}
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#define EMULATE_EINTR(func, error_result) \
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if (func##_count != 0) { \
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if (func##_count++ != 3) { \
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errno = EINTR; \
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return error_result; \
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} \
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}
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#ifndef _WIN32
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int test::open(const char *path, int oflag, int mode) {
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EMULATE_EINTR(open, -1);
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return ::open(path, oflag, mode);
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}
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#else
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errno_t test::sopen_s(
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int* pfh, const char *filename, int oflag, int shflag, int pmode) {
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EMULATE_EINTR(open, EINTR);
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return _sopen_s(pfh, filename, oflag, shflag, pmode);
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}
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#endif
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int test::close(int fildes) {
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// Close the file first because close shouldn't be retried.
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int result = ::close(fildes);
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EMULATE_EINTR(close, -1);
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return result;
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}
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int test::dup(int fildes) {
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EMULATE_EINTR(dup, -1);
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return ::dup(fildes);
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}
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int test::dup2(int fildes, int fildes2) {
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EMULATE_EINTR(dup2, -1);
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return ::dup2(fildes, fildes2);
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}
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FILE *test::fdopen(int fildes, const char *mode) {
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EMULATE_EINTR(fdopen, 0);
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return ::fdopen(fildes, mode);
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}
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int test::fileno(FILE *stream) {
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EMULATE_EINTR(fileno, -1);
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return ::fileno(stream);
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}
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test::ssize_t test::read(int fildes, void *buf, test::size_t nbyte) {
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EMULATE_EINTR(read, -1);
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return ::read(fildes, buf, nbyte);
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}
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test::ssize_t test::write(int fildes, const void *buf, test::size_t nbyte) {
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EMULATE_EINTR(write, -1);
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return ::write(fildes, buf, nbyte);
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}
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#ifndef _WIN32
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# define EXPECT_RETRY(statement, func, message) \
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func##_count = 1; \
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statement; \
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EXPECT_EQ(4, func##_count); \
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func##_count = 0;
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#else
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# define EXPECT_RETRY(statement, func, message) \
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func##_count = 1; \
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EXPECT_SYSTEM_ERROR(statement, EINTR, message); \
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func##_count = 0;
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#endif
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TEST(FileTest, OpenRetry) {
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EXPECT_RETRY(File file("CMakeLists.txt", File::RDONLY),
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open, "cannot open file CMakeLists.txt");
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}
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// TODO: test retry on EINTR
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