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Diffstat (limited to 'test/syscalls/linux/socket_netdevice.cc')
-rw-r--r-- | test/syscalls/linux/socket_netdevice.cc | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/test/syscalls/linux/socket_netdevice.cc b/test/syscalls/linux/socket_netdevice.cc deleted file mode 100644 index 15d4b85a7..000000000 --- a/test/syscalls/linux/socket_netdevice.cc +++ /dev/null @@ -1,184 +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 <linux/netlink.h> -#include <linux/rtnetlink.h> -#include <linux/sockios.h> -#include <sys/ioctl.h> -#include <sys/socket.h> - -#include "gtest/gtest.h" -#include "absl/base/internal/endian.h" -#include "test/syscalls/linux/socket_netlink_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -// Tests for netdevice queries. - -namespace gvisor { -namespace testing { - -namespace { - -using ::testing::AnyOf; -using ::testing::Eq; - -TEST(NetdeviceTest, Loopback) { - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - - // Prepare the request. - struct ifreq ifr; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - - // Check for a non-zero interface index. - ASSERT_THAT(ioctl(sock.get(), SIOCGIFINDEX, &ifr), SyscallSucceeds()); - EXPECT_NE(ifr.ifr_ifindex, 0); - - // Check that the loopback is zero hardware address. - ASSERT_THAT(ioctl(sock.get(), SIOCGIFHWADDR, &ifr), SyscallSucceeds()); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[0], 0); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[1], 0); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[2], 0); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[3], 0); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[4], 0); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[5], 0); -} - -TEST(NetdeviceTest, Netmask) { - // We need an interface index to identify the loopback device. - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - struct ifreq ifr; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - ASSERT_THAT(ioctl(sock.get(), SIOCGIFINDEX, &ifr), SyscallSucceeds()); - EXPECT_NE(ifr.ifr_ifindex, 0); - - // Use a netlink socket to get the netmask, which we'll then compare to the - // netmask obtained via ioctl. - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); - - struct request { - struct nlmsghdr hdr; - struct rtgenmsg rgm; - }; - - constexpr uint32_t kSeq = 12345; - - struct request req; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETADDR; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = kSeq; - req.rgm.rtgen_family = AF_UNSPEC; - - // Iterate through messages until we find the one containing the prefix length - // (i.e. netmask) for the loopback device. - int prefixlen = -1; - ASSERT_NO_ERRNO(NetlinkRequestResponse( - fd, &req, sizeof(req), - [&](const struct nlmsghdr* hdr) { - EXPECT_THAT(hdr->nlmsg_type, AnyOf(Eq(RTM_NEWADDR), Eq(NLMSG_DONE))); - - EXPECT_TRUE((hdr->nlmsg_flags & NLM_F_MULTI) == NLM_F_MULTI) - << std::hex << hdr->nlmsg_flags; - - EXPECT_EQ(hdr->nlmsg_seq, kSeq); - EXPECT_EQ(hdr->nlmsg_pid, port); - - if (hdr->nlmsg_type != RTM_NEWADDR) { - return; - } - - // RTM_NEWADDR contains at least the header and ifaddrmsg. - EXPECT_GE(hdr->nlmsg_len, sizeof(*hdr) + sizeof(struct ifaddrmsg)); - - struct ifaddrmsg* ifaddrmsg = - reinterpret_cast<struct ifaddrmsg*>(NLMSG_DATA(hdr)); - if (ifaddrmsg->ifa_index == static_cast<uint32_t>(ifr.ifr_ifindex) && - ifaddrmsg->ifa_family == AF_INET) { - prefixlen = ifaddrmsg->ifa_prefixlen; - } - }, - false)); - - ASSERT_GE(prefixlen, 0); - - // Netmask is stored big endian in struct sockaddr_in, so we do the same for - // comparison. - uint32_t mask = 0xffffffff << (32 - prefixlen); - mask = absl::gbswap_32(mask); - - // Check that the loopback interface has the correct subnet mask. - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - ASSERT_THAT(ioctl(sock.get(), SIOCGIFNETMASK, &ifr), SyscallSucceeds()); - EXPECT_EQ(ifr.ifr_netmask.sa_family, AF_INET); - struct sockaddr_in* sin = - reinterpret_cast<struct sockaddr_in*>(&ifr.ifr_netmask); - EXPECT_EQ(sin->sin_addr.s_addr, mask); -} - -TEST(NetdeviceTest, InterfaceName) { - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - - // Prepare the request. - struct ifreq ifr; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - - // Check for a non-zero interface index. - ASSERT_THAT(ioctl(sock.get(), SIOCGIFINDEX, &ifr), SyscallSucceeds()); - EXPECT_NE(ifr.ifr_ifindex, 0); - - // Check that SIOCGIFNAME finds the loopback interface. - snprintf(ifr.ifr_name, IFNAMSIZ, "foo"); - ASSERT_THAT(ioctl(sock.get(), SIOCGIFNAME, &ifr), SyscallSucceeds()); - EXPECT_STREQ(ifr.ifr_name, "lo"); -} - -TEST(NetdeviceTest, InterfaceFlags) { - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - - // Prepare the request. - struct ifreq ifr; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - - // Check that SIOCGIFFLAGS marks the interface with IFF_LOOPBACK, IFF_UP, and - // IFF_RUNNING. - ASSERT_THAT(ioctl(sock.get(), SIOCGIFFLAGS, &ifr), SyscallSucceeds()); - EXPECT_EQ(ifr.ifr_flags & IFF_UP, IFF_UP); - EXPECT_EQ(ifr.ifr_flags & IFF_RUNNING, IFF_RUNNING); -} - -TEST(NetdeviceTest, InterfaceMTU) { - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - - // Prepare the request. - struct ifreq ifr = {}; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - - // Check that SIOCGIFMTU returns a nonzero MTU. - ASSERT_THAT(ioctl(sock.get(), SIOCGIFMTU, &ifr), SyscallSucceeds()); - EXPECT_GT(ifr.ifr_mtu, 0); -} - -} // namespace - -} // namespace testing -} // namespace gvisor |