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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This test is POSIX only.
#include "ipc/ipc_message_attachment_set.h"
#include <fcntl.h>
#include <stddef.h>
#include <unistd.h>
#include "base/posix/eintr_wrapper.h"
#include "build/build_config.h"
#include "ipc/ipc_platform_file_attachment_posix.h"
#include "testing/gtest/include/gtest/gtest.h"
#if BUILDFLAG(IS_FUCHSIA)
#include <lib/fdio/fdio.h>
#endif
namespace IPC {
namespace {
// Get a safe file descriptor for test purposes.
int GetSafeFd() {
#if BUILDFLAG(IS_FUCHSIA)
return fdio_fd_create_null();
#else
return open("/dev/null", O_RDONLY);
#endif
}
// Returns true if fd was already closed. Closes fd if not closed.
bool VerifyClosed(int fd) {
const int duped = HANDLE_EINTR(dup(fd));
if (duped != -1) {
EXPECT_NE(IGNORE_EINTR(close(duped)), -1);
EXPECT_NE(IGNORE_EINTR(close(fd)), -1);
return false;
}
return true;
}
int GetFdAt(MessageAttachmentSet* set, int id) {
return static_cast<internal::PlatformFileAttachment&>(
*set->GetAttachmentAt(id))
.TakePlatformFile();
}
// The MessageAttachmentSet will try and close some of the descriptor numbers
// which we given it. This is the base descriptor value. It's great enough such
// that no real descriptor will accidentally be closed.
static const int kFDBase = 50000;
TEST(MessageAttachmentSet, BasicAdd) {
scoped_refptr<MessageAttachmentSet> set(new MessageAttachmentSet);
ASSERT_EQ(set->size(), 0u);
ASSERT_TRUE(set->empty());
ASSERT_TRUE(
set->AddAttachment(new internal::PlatformFileAttachment(kFDBase)));
ASSERT_EQ(set->size(), 1u);
ASSERT_TRUE(!set->empty());
// Empties the set and stops a warning about deleting a set with unconsumed
// descriptors
set->CommitAllDescriptors();
}
TEST(MessageAttachmentSet, BasicAddAndClose) {
scoped_refptr<MessageAttachmentSet> set(new MessageAttachmentSet);
ASSERT_EQ(set->size(), 0u);
ASSERT_TRUE(set->empty());
const int fd = GetSafeFd();
ASSERT_TRUE(set->AddAttachment(
new internal::PlatformFileAttachment(base::ScopedFD(fd))));
ASSERT_EQ(set->size(), 1u);
ASSERT_TRUE(!set->empty());
set->CommitAllDescriptors();
ASSERT_TRUE(VerifyClosed(fd));
}
TEST(MessageAttachmentSet, MaxSize) {
scoped_refptr<MessageAttachmentSet> set(new MessageAttachmentSet);
for (size_t i = 0; i < MessageAttachmentSet::kMaxDescriptorsPerMessage; ++i)
ASSERT_TRUE(set->AddAttachment(
new internal::PlatformFileAttachment(kFDBase + 1 + i)));
ASSERT_TRUE(
!set->AddAttachment(new internal::PlatformFileAttachment(kFDBase)));
set->CommitAllDescriptors();
}
TEST(MessageAttachmentSet, WalkInOrder) {
scoped_refptr<MessageAttachmentSet> set(new MessageAttachmentSet);
ASSERT_TRUE(
set->AddAttachment(new internal::PlatformFileAttachment(kFDBase)));
ASSERT_TRUE(
set->AddAttachment(new internal::PlatformFileAttachment(kFDBase + 1)));
ASSERT_TRUE(
set->AddAttachment(new internal::PlatformFileAttachment(kFDBase + 2)));
ASSERT_EQ(GetFdAt(set.get(), 0), kFDBase);
ASSERT_EQ(GetFdAt(set.get(), 1), kFDBase + 1);
ASSERT_EQ(GetFdAt(set.get(), 2), kFDBase + 2);
ASSERT_FALSE(set->GetAttachmentAt(0));
set->CommitAllDescriptors();
}
TEST(MessageAttachmentSet, WalkWrongOrder) {
scoped_refptr<MessageAttachmentSet> set(new MessageAttachmentSet);
ASSERT_TRUE(
set->AddAttachment(new internal::PlatformFileAttachment(kFDBase)));
ASSERT_TRUE(
set->AddAttachment(new internal::PlatformFileAttachment(kFDBase + 1)));
ASSERT_TRUE(
set->AddAttachment(new internal::PlatformFileAttachment(kFDBase + 2)));
ASSERT_EQ(GetFdAt(set.get(), 0), kFDBase);
ASSERT_FALSE(set->GetAttachmentAt(2));
set->CommitAllDescriptors();
}
#if BUILDFLAG(IS_ANDROID)
#define MAYBE_DontClose DISABLED_DontClose
#else
#define MAYBE_DontClose DontClose
#endif
TEST(MessageAttachmentSet, MAYBE_DontClose) {
scoped_refptr<MessageAttachmentSet> set(new MessageAttachmentSet);
const int fd = GetSafeFd();
ASSERT_TRUE(set->AddAttachment(new internal::PlatformFileAttachment(fd)));
set->CommitAllDescriptors();
ASSERT_FALSE(VerifyClosed(fd));
}
TEST(MessageAttachmentSet, DoClose) {
scoped_refptr<MessageAttachmentSet> set(new MessageAttachmentSet);
const int fd = GetSafeFd();
ASSERT_TRUE(set->AddAttachment(
new internal::PlatformFileAttachment(base::ScopedFD(fd))));
set->CommitAllDescriptors();
ASSERT_TRUE(VerifyClosed(fd));
}
} // namespace
} // namespace IPC
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