1 files changed, 0 insertions, 356 deletions
diff --git a/test/syscalls/linux/proc_net.cc b/test/syscalls/linux/proc_net.cc
deleted file mode 100644
index 05c952b99..000000000
--- a/test/syscalls/linux/proc_net.cc
+++ /dev/null
@@ -1,356 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// 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 <arpa/inet.h>
-#include <errno.h>
-#include <netinet/in.h>
-#include <poll.h>
-#include <sys/socket.h>
-#include <sys/syscall.h>
-#include <sys/types.h>
-
-#include "gtest/gtest.h"
-#include "absl/strings/str_split.h"
-#include "absl/time/clock.h"
-#include "test/syscalls/linux/socket_test_util.h"
-#include "test/util/capability_util.h"
-#include "test/util/file_descriptor.h"
-#include "test/util/fs_util.h"
-#include "test/util/test_util.h"
-
-namespace gvisor {
-namespace testing {
-namespace {
-
-constexpr const char kProcNet[] = "/proc/net";
-
-TEST(ProcNetSymlinkTarget, FileMode) {
-  struct stat s;
-  ASSERT_THAT(stat(kProcNet, &s), SyscallSucceeds());
-  EXPECT_EQ(s.st_mode & S_IFMT, S_IFDIR);
-  EXPECT_EQ(s.st_mode & 0777, 0555);
-}
-
-TEST(ProcNetSymlink, FileMode) {
-  struct stat s;
-  ASSERT_THAT(lstat(kProcNet, &s), SyscallSucceeds());
-  EXPECT_EQ(s.st_mode & S_IFMT, S_IFLNK);
-  EXPECT_EQ(s.st_mode & 0777, 0777);
-}
-
-TEST(ProcNetSymlink, Contents) {
-  char buf[40] = {};
-  int n = readlink(kProcNet, buf, sizeof(buf));
-  ASSERT_THAT(n, SyscallSucceeds());
-
-  buf[n] = 0;
-  EXPECT_STREQ(buf, "self/net");
-}
-
-TEST(ProcNetIfInet6, Format) {
-  auto ifinet6 = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/if_inet6"));
-  EXPECT_THAT(ifinet6,
-              ::testing::MatchesRegex(
-                  // Ex: "00000000000000000000000000000001 01 80 10 80 lo\n"
-                  "^([a-f0-9]{32}( [a-f0-9]{2}){4} +[a-z][a-z0-9]*\n)+$"));
-}
-
-TEST(ProcSysNetIpv4Sack, Exists) {
-  EXPECT_THAT(open("/proc/sys/net/ipv4/tcp_sack", O_RDONLY), SyscallSucceeds());
-}
-
-TEST(ProcSysNetIpv4Sack, CanReadAndWrite) {
-  SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability((CAP_DAC_OVERRIDE))));
-
-  auto const fd =
-      ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/sys/net/ipv4/tcp_sack", O_RDWR));
-
-  char buf;
-  EXPECT_THAT(PreadFd(fd.get(), &buf, sizeof(buf), 0),
-              SyscallSucceedsWithValue(sizeof(buf)));
-
-  EXPECT_TRUE(buf == '0' || buf == '1') << "unexpected tcp_sack: " << buf;
-
-  char to_write = (buf == '1') ? '0' : '1';
-  EXPECT_THAT(PwriteFd(fd.get(), &to_write, sizeof(to_write), 0),
-              SyscallSucceedsWithValue(sizeof(to_write)));
-
-  buf = 0;
-  EXPECT_THAT(PreadFd(fd.get(), &buf, sizeof(buf), 0),
-              SyscallSucceedsWithValue(sizeof(buf)));
-  EXPECT_EQ(buf, to_write);
-}
-
-PosixErrorOr<uint64_t> GetSNMPMetricFromProc(const std::string snmp,
-                                             const std::string& type,
-                                             const std::string& item) {
-  std::vector<std::string> snmp_vec = absl::StrSplit(snmp, '\n');
-
-  // /proc/net/snmp prints a line of headers followed by a line of metrics.
-  // Only search the headers.
-  for (unsigned i = 0; i < snmp_vec.size(); i = i + 2) {
-    if (!absl::StartsWith(snmp_vec[i], type)) continue;
-
-    std::vector<std::string> fields =
-        absl::StrSplit(snmp_vec[i], ' ', absl::SkipWhitespace());
-
-    EXPECT_TRUE((i + 1) < snmp_vec.size());
-    std::vector<std::string> values =
-        absl::StrSplit(snmp_vec[i + 1], ' ', absl::SkipWhitespace());
-
-    EXPECT_TRUE(!fields.empty() && fields.size() == values.size());
-
-    // Metrics start at the first index.
-    for (unsigned j = 1; j < fields.size(); j++) {
-      if (fields[j] == item) {
-        uint64_t val;
-        if (!absl::SimpleAtoi(values[j], &val)) {
-          return PosixError(EINVAL,
-                            absl::StrCat("field is not a number: ", values[j]));
-        }
-
-        return val;
-      }
-    }
-  }
-  // We should never get here.
-  return PosixError(
-      EINVAL, absl::StrCat("failed to find ", type, "/", item, " in:", snmp));
-}
-
-TEST(ProcNetSnmp, TcpReset_NoRandomSave) {
-  // TODO(gvisor.dev/issue/866): epsocket metrics are not savable.
-  DisableSave ds;
-
-  uint64_t oldAttemptFails;
-  uint64_t oldActiveOpens;
-  uint64_t oldOutRsts;
-  auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp"));
-  oldActiveOpens = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens"));
-  oldOutRsts =
-      ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Tcp", "OutRsts"));
-  oldAttemptFails = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "AttemptFails"));
-
-  FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_STREAM, 0));
-
-  struct sockaddr_in sin = {
-      .sin_family = AF_INET,
-      .sin_port = htons(1234),
-  };
-
-  ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1);
-  ASSERT_THAT(connect(s.get(), (struct sockaddr*)&sin, sizeof(sin)),
-              SyscallFailsWithErrno(ECONNREFUSED));
-
-  uint64_t newAttemptFails;
-  uint64_t newActiveOpens;
-  uint64_t newOutRsts;
-  snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp"));
-  newActiveOpens = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens"));
-  newOutRsts =
-      ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Tcp", "OutRsts"));
-  newAttemptFails = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "AttemptFails"));
-
-  EXPECT_EQ(oldActiveOpens, newActiveOpens - 1);
-  EXPECT_EQ(oldOutRsts, newOutRsts - 1);
-  EXPECT_EQ(oldAttemptFails, newAttemptFails - 1);
-}
-
-TEST(ProcNetSnmp, TcpEstab_NoRandomSave) {
-  // TODO(gvisor.dev/issue/866): epsocket metrics are not savable.
-  DisableSave ds;
-
-  uint64_t oldEstabResets;
-  uint64_t oldActiveOpens;
-  uint64_t oldPassiveOpens;
-  uint64_t oldCurrEstab;
-  auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp"));
-  oldActiveOpens = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens"));
-  oldPassiveOpens = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "PassiveOpens"));
-  oldCurrEstab = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "CurrEstab"));
-  oldEstabResets = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "EstabResets"));
-
-  FileDescriptor s_listen =
-      ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_STREAM, 0));
-  struct sockaddr_in sin = {
-      .sin_family = AF_INET,
-      .sin_port = 0,
-  };
-
-  ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1);
-  ASSERT_THAT(bind(s_listen.get(), (struct sockaddr*)&sin, sizeof(sin)),
-              SyscallSucceeds());
-  ASSERT_THAT(listen(s_listen.get(), 1), SyscallSucceeds());
-
-  // Get the port bound by the listening socket.
-  socklen_t addrlen = sizeof(sin);
-  ASSERT_THAT(
-      getsockname(s_listen.get(), reinterpret_cast<sockaddr*>(&sin), &addrlen),
-      SyscallSucceeds());
-
-  FileDescriptor s_connect =
-      ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_STREAM, 0));
-  ASSERT_THAT(connect(s_connect.get(), (struct sockaddr*)&sin, sizeof(sin)),
-              SyscallSucceeds());
-
-  auto s_accept =
-      ASSERT_NO_ERRNO_AND_VALUE(Accept(s_listen.get(), nullptr, nullptr));
-
-  uint64_t newEstabResets;
-  uint64_t newActiveOpens;
-  uint64_t newPassiveOpens;
-  uint64_t newCurrEstab;
-  snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp"));
-  newActiveOpens = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens"));
-  newPassiveOpens = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "PassiveOpens"));
-  newCurrEstab = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "CurrEstab"));
-
-  EXPECT_EQ(oldActiveOpens, newActiveOpens - 1);
-  EXPECT_EQ(oldPassiveOpens, newPassiveOpens - 1);
-  EXPECT_EQ(oldCurrEstab, newCurrEstab - 2);
-
-  // Send 1 byte from client to server.
-  ASSERT_THAT(send(s_connect.get(), "a", 1, 0), SyscallSucceedsWithValue(1));
-
-  constexpr int kPollTimeoutMs = 20000;  // Wait up to 20 seconds for the data.
-
-  // Wait until server-side fd sees the data on its side but don't read it.
-  struct pollfd poll_fd = {s_accept.get(), POLLIN, 0};
-  ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs),
-              SyscallSucceedsWithValue(1));
-
-  // Now close server-side fd without reading the data which leads to a RST
-  // packet sent to client side.
-  s_accept.reset(-1);
-
-  // Wait until client-side fd sees RST packet.
-  struct pollfd poll_fd1 = {s_connect.get(), POLLIN, 0};
-  ASSERT_THAT(RetryEINTR(poll)(&poll_fd1, 1, kPollTimeoutMs),
-              SyscallSucceedsWithValue(1));
-
-  // Now close client-side fd.
-  s_connect.reset(-1);
-
-  // Wait until the process of the netstack.
-  absl::SleepFor(absl::Seconds(1));
-
-  snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp"));
-  newCurrEstab = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "CurrEstab"));
-  newEstabResets = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Tcp", "EstabResets"));
-
-  EXPECT_EQ(oldCurrEstab, newCurrEstab);
-  EXPECT_EQ(oldEstabResets, newEstabResets - 2);
-}
-
-TEST(ProcNetSnmp, UdpNoPorts_NoRandomSave) {
-  // TODO(gvisor.dev/issue/866): epsocket metrics are not savable.
-  DisableSave ds;
-
-  uint64_t oldOutDatagrams;
-  uint64_t oldNoPorts;
-  auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp"));
-  oldOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams"));
-  oldNoPorts =
-      ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Udp", "NoPorts"));
-
-  FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0));
-
-  struct sockaddr_in sin = {
-      .sin_family = AF_INET,
-      .sin_port = htons(4444),
-  };
-  ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1);
-  ASSERT_THAT(sendto(s.get(), "a", 1, 0, (struct sockaddr*)&sin, sizeof(sin)),
-              SyscallSucceedsWithValue(1));
-
-  uint64_t newOutDatagrams;
-  uint64_t newNoPorts;
-  snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp"));
-  newOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams"));
-  newNoPorts =
-      ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Udp", "NoPorts"));
-
-  EXPECT_EQ(oldOutDatagrams, newOutDatagrams - 1);
-  EXPECT_EQ(oldNoPorts, newNoPorts - 1);
-}
-
-TEST(ProcNetSnmp, UdpIn) {
-  // TODO(gvisor.dev/issue/866): epsocket metrics are not savable.
-  const DisableSave ds;
-
-  uint64_t oldOutDatagrams;
-  uint64_t oldInDatagrams;
-  auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp"));
-  oldOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams"));
-  oldInDatagrams = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Udp", "InDatagrams"));
-
-  std::cerr << "snmp: " << std::endl << snmp << std::endl;
-  FileDescriptor server =
-      ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0));
-  struct sockaddr_in sin = {
-      .sin_family = AF_INET,
-      .sin_port = htons(0),
-  };
-  ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1);
-  ASSERT_THAT(bind(server.get(), (struct sockaddr*)&sin, sizeof(sin)),
-              SyscallSucceeds());
-  // Get the port bound by the server socket.
-  socklen_t addrlen = sizeof(sin);
-  ASSERT_THAT(
-      getsockname(server.get(), reinterpret_cast<sockaddr*>(&sin), &addrlen),
-      SyscallSucceeds());
-
-  FileDescriptor client =
-      ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0));
-  ASSERT_THAT(
-      sendto(client.get(), "a", 1, 0, (struct sockaddr*)&sin, sizeof(sin)),
-      SyscallSucceedsWithValue(1));
-
-  char buf[128];
-  ASSERT_THAT(recvfrom(server.get(), buf, sizeof(buf), 0, NULL, NULL),
-              SyscallSucceedsWithValue(1));
-
-  uint64_t newOutDatagrams;
-  uint64_t newInDatagrams;
-  snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp"));
-  std::cerr << "new snmp: " << std::endl << snmp << std::endl;
-  newOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams"));
-  newInDatagrams = ASSERT_NO_ERRNO_AND_VALUE(
-      GetSNMPMetricFromProc(snmp, "Udp", "InDatagrams"));
-
-  EXPECT_EQ(oldOutDatagrams, newOutDatagrams - 1);
-  EXPECT_EQ(oldInDatagrams, newInDatagrams - 1);
-}
-
-}  // namespace
-}  // namespace testing
-}  // namespace gvisor