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Diffstat (limited to 'test/syscalls/linux/proc_net_udp.cc')
-rw-r--r--test/syscalls/linux/proc_net_udp.cc309
1 files changed, 0 insertions, 309 deletions
diff --git a/test/syscalls/linux/proc_net_udp.cc b/test/syscalls/linux/proc_net_udp.cc
deleted file mode 100644
index 786b4b4af..000000000
--- a/test/syscalls/linux/proc_net_udp.cc
+++ /dev/null
@@ -1,309 +0,0 @@
-// Copyright 2019 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include <netinet/tcp.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "gtest/gtest.h"
-#include "absl/strings/numbers.h"
-#include "absl/strings/str_join.h"
-#include "absl/strings/str_split.h"
-#include "test/syscalls/linux/ip_socket_test_util.h"
-#include "test/util/file_descriptor.h"
-#include "test/util/test_util.h"
-
-namespace gvisor {
-namespace testing {
-namespace {
-
-using absl::StrCat;
-using absl::StrFormat;
-using absl::StrSplit;
-
-constexpr char kProcNetUDPHeader[] =
- " sl local_address rem_address st tx_queue rx_queue tr tm->when "
- "retrnsmt uid timeout inode ref pointer drops ";
-
-// UDPEntry represents a single entry from /proc/net/udp.
-struct UDPEntry {
- uint32_t local_addr;
- uint16_t local_port;
-
- uint32_t remote_addr;
- uint16_t remote_port;
-
- uint64_t state;
- uint64_t uid;
- uint64_t inode;
-};
-
-std::string DescribeFirstInetSocket(const SocketPair& sockets) {
- const struct sockaddr* addr = sockets.first_addr();
- return StrFormat("First test socket: fd:%d %8X:%4X", sockets.first_fd(),
- IPFromInetSockaddr(addr), PortFromInetSockaddr(addr));
-}
-
-std::string DescribeSecondInetSocket(const SocketPair& sockets) {
- const struct sockaddr* addr = sockets.second_addr();
- return StrFormat("Second test socket fd:%d %8X:%4X", sockets.second_fd(),
- IPFromInetSockaddr(addr), PortFromInetSockaddr(addr));
-}
-
-// Finds the first entry in 'entries' for which 'predicate' returns true.
-// Returns true on match, and set 'match' to a copy of the matching entry. If
-// 'match' is null, it's ignored.
-bool FindBy(const std::vector<UDPEntry>& entries, UDPEntry* match,
- std::function<bool(const UDPEntry&)> predicate) {
- for (const UDPEntry& entry : entries) {
- if (predicate(entry)) {
- if (match != nullptr) {
- *match = entry;
- }
- return true;
- }
- }
- return false;
-}
-
-bool FindByLocalAddr(const std::vector<UDPEntry>& entries, UDPEntry* match,
- const struct sockaddr* addr) {
- uint32_t host = IPFromInetSockaddr(addr);
- uint16_t port = PortFromInetSockaddr(addr);
- return FindBy(entries, match, [host, port](const UDPEntry& e) {
- return (e.local_addr == host && e.local_port == port);
- });
-}
-
-bool FindByRemoteAddr(const std::vector<UDPEntry>& entries, UDPEntry* match,
- const struct sockaddr* addr) {
- uint32_t host = IPFromInetSockaddr(addr);
- uint16_t port = PortFromInetSockaddr(addr);
- return FindBy(entries, match, [host, port](const UDPEntry& e) {
- return (e.remote_addr == host && e.remote_port == port);
- });
-}
-
-PosixErrorOr<uint64_t> InodeFromSocketFD(int fd) {
- ASSIGN_OR_RETURN_ERRNO(struct stat s, Fstat(fd));
- if (!S_ISSOCK(s.st_mode)) {
- return PosixError(EINVAL, StrFormat("FD %d is not a socket", fd));
- }
- return s.st_ino;
-}
-
-PosixErrorOr<bool> FindByFD(const std::vector<UDPEntry>& entries,
- UDPEntry* match, int fd) {
- ASSIGN_OR_RETURN_ERRNO(uint64_t inode, InodeFromSocketFD(fd));
- return FindBy(entries, match,
- [inode](const UDPEntry& e) { return (e.inode == inode); });
-}
-
-// Returns a parsed representation of /proc/net/udp entries.
-PosixErrorOr<std::vector<UDPEntry>> ProcNetUDPEntries() {
- std::string content;
- RETURN_IF_ERRNO(GetContents("/proc/net/udp", &content));
-
- bool found_header = false;
- std::vector<UDPEntry> entries;
- std::vector<std::string> lines = StrSplit(content, '\n');
- std::cerr << "<contents of /proc/net/udp>" << std::endl;
- for (const std::string& line : lines) {
- std::cerr << line << std::endl;
-
- if (!found_header) {
- EXPECT_EQ(line, kProcNetUDPHeader);
- found_header = true;
- continue;
- }
- if (line.empty()) {
- continue;
- }
-
- // Parse a single entry from /proc/net/udp.
- //
- // Example entries:
- //
- // clang-format off
- //
- // sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops
- // 3503: 0100007F:0035 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 33317 2 0000000000000000 0
- // 3518: 00000000:0044 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 40394 2 0000000000000000 0
- // ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
- // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
- //
- // clang-format on
-
- UDPEntry entry;
- std::vector<std::string> fields =
- StrSplit(line, absl::ByAnyChar(": "), absl::SkipEmpty());
-
- ASSIGN_OR_RETURN_ERRNO(entry.local_addr, AtoiBase(fields[1], 16));
- ASSIGN_OR_RETURN_ERRNO(entry.local_port, AtoiBase(fields[2], 16));
-
- ASSIGN_OR_RETURN_ERRNO(entry.remote_addr, AtoiBase(fields[3], 16));
- ASSIGN_OR_RETURN_ERRNO(entry.remote_port, AtoiBase(fields[4], 16));
-
- ASSIGN_OR_RETURN_ERRNO(entry.state, AtoiBase(fields[5], 16));
- ASSIGN_OR_RETURN_ERRNO(entry.uid, Atoi<uint64_t>(fields[11]));
- ASSIGN_OR_RETURN_ERRNO(entry.inode, Atoi<uint64_t>(fields[13]));
-
- // Linux shares internal data structures between TCP and UDP sockets. The
- // proc entries for UDP sockets share some fields with TCP sockets, but
- // these fields should always be zero as they're not meaningful for UDP
- // sockets.
- EXPECT_EQ(fields[8], "00") << StrFormat("sl:%s, tr", fields[0]);
- EXPECT_EQ(fields[9], "00000000") << StrFormat("sl:%s, tm->when", fields[0]);
- EXPECT_EQ(fields[10], "00000000")
- << StrFormat("sl:%s, retrnsmt", fields[0]);
- EXPECT_EQ(fields[12], "0") << StrFormat("sl:%s, timeout", fields[0]);
-
- entries.push_back(entry);
- }
- std::cerr << "<end of /proc/net/udp>" << std::endl;
-
- return entries;
-}
-
-TEST(ProcNetUDP, Exists) {
- const std::string content =
- ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/udp"));
- const std::string header_line = StrCat(kProcNetUDPHeader, "\n");
- EXPECT_THAT(content, ::testing::StartsWith(header_line));
-}
-
-TEST(ProcNetUDP, EntryUID) {
- auto sockets =
- ASSERT_NO_ERRNO_AND_VALUE(IPv4UDPBidirectionalBindSocketPair(0).Create());
- std::vector<UDPEntry> entries =
- ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries());
- UDPEntry e;
- ASSERT_TRUE(FindByLocalAddr(entries, &e, sockets->first_addr()))
- << DescribeFirstInetSocket(*sockets);
- EXPECT_EQ(e.uid, geteuid());
- ASSERT_TRUE(FindByRemoteAddr(entries, &e, sockets->first_addr()))
- << DescribeSecondInetSocket(*sockets);
- EXPECT_EQ(e.uid, geteuid());
-}
-
-TEST(ProcNetUDP, FindMutualEntries) {
- auto sockets =
- ASSERT_NO_ERRNO_AND_VALUE(IPv4UDPBidirectionalBindSocketPair(0).Create());
- std::vector<UDPEntry> entries =
- ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries());
-
- EXPECT_TRUE(FindByLocalAddr(entries, nullptr, sockets->first_addr()))
- << DescribeFirstInetSocket(*sockets);
- EXPECT_TRUE(FindByRemoteAddr(entries, nullptr, sockets->first_addr()))
- << DescribeSecondInetSocket(*sockets);
-
- EXPECT_TRUE(FindByLocalAddr(entries, nullptr, sockets->second_addr()))
- << DescribeSecondInetSocket(*sockets);
- EXPECT_TRUE(FindByRemoteAddr(entries, nullptr, sockets->second_addr()))
- << DescribeFirstInetSocket(*sockets);
-}
-
-TEST(ProcNetUDP, EntriesRemovedOnClose) {
- auto sockets =
- ASSERT_NO_ERRNO_AND_VALUE(IPv4UDPBidirectionalBindSocketPair(0).Create());
- std::vector<UDPEntry> entries =
- ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries());
-
- EXPECT_TRUE(FindByLocalAddr(entries, nullptr, sockets->first_addr()))
- << DescribeFirstInetSocket(*sockets);
- EXPECT_TRUE(FindByLocalAddr(entries, nullptr, sockets->second_addr()))
- << DescribeSecondInetSocket(*sockets);
-
- EXPECT_THAT(close(sockets->release_first_fd()), SyscallSucceeds());
- entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries());
- // First socket's entry should be gone, but the second socket's entry should
- // still exist.
- EXPECT_FALSE(FindByLocalAddr(entries, nullptr, sockets->first_addr()))
- << DescribeFirstInetSocket(*sockets);
- EXPECT_TRUE(FindByLocalAddr(entries, nullptr, sockets->second_addr()))
- << DescribeSecondInetSocket(*sockets);
-
- EXPECT_THAT(close(sockets->release_second_fd()), SyscallSucceeds());
- entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries());
- // Both entries should be gone.
- EXPECT_FALSE(FindByLocalAddr(entries, nullptr, sockets->first_addr()))
- << DescribeFirstInetSocket(*sockets);
- EXPECT_FALSE(FindByLocalAddr(entries, nullptr, sockets->second_addr()))
- << DescribeSecondInetSocket(*sockets);
-}
-
-PosixErrorOr<std::unique_ptr<FileDescriptor>> BoundUDPSocket() {
- ASSIGN_OR_RETURN_ERRNO(std::unique_ptr<FileDescriptor> socket,
- IPv4UDPUnboundSocket(0).Create());
- struct sockaddr_in addr;
- addr.sin_family = AF_INET;
- addr.sin_addr.s_addr = htonl(INADDR_ANY);
- addr.sin_port = 0;
-
- int res = bind(socket->get(), reinterpret_cast<const struct sockaddr*>(&addr),
- sizeof(addr));
- if (res) {
- return PosixError(errno, "bind()");
- }
- return socket;
-}
-
-TEST(ProcNetUDP, BoundEntry) {
- std::unique_ptr<FileDescriptor> socket =
- ASSERT_NO_ERRNO_AND_VALUE(BoundUDPSocket());
- struct sockaddr addr;
- socklen_t len = sizeof(addr);
- ASSERT_THAT(getsockname(socket->get(), &addr, &len), SyscallSucceeds());
- uint16_t port = PortFromInetSockaddr(&addr);
-
- std::vector<UDPEntry> entries =
- ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries());
- UDPEntry e;
- ASSERT_TRUE(ASSERT_NO_ERRNO_AND_VALUE(FindByFD(entries, &e, socket->get())));
- EXPECT_EQ(e.local_port, port);
- EXPECT_EQ(e.remote_addr, 0);
- EXPECT_EQ(e.remote_port, 0);
-}
-
-TEST(ProcNetUDP, BoundSocketStateClosed) {
- std::unique_ptr<FileDescriptor> socket =
- ASSERT_NO_ERRNO_AND_VALUE(BoundUDPSocket());
- std::vector<UDPEntry> entries =
- ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries());
- UDPEntry e;
- ASSERT_TRUE(ASSERT_NO_ERRNO_AND_VALUE(FindByFD(entries, &e, socket->get())));
- EXPECT_EQ(e.state, TCP_CLOSE);
-}
-
-TEST(ProcNetUDP, ConnectedSocketStateEstablished) {
- auto sockets =
- ASSERT_NO_ERRNO_AND_VALUE(IPv4UDPBidirectionalBindSocketPair(0).Create());
- std::vector<UDPEntry> entries =
- ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries());
-
- UDPEntry e;
- ASSERT_TRUE(FindByLocalAddr(entries, &e, sockets->first_addr()))
- << DescribeFirstInetSocket(*sockets);
- EXPECT_EQ(e.state, TCP_ESTABLISHED);
-
- ASSERT_TRUE(FindByLocalAddr(entries, &e, sockets->second_addr()))
- << DescribeSecondInetSocket(*sockets);
- EXPECT_EQ(e.state, TCP_ESTABLISHED);
-}
-
-} // namespace
-} // namespace testing
-} // namespace gvisor
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