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Diffstat (limited to 'common/netd/libnetdutils/include/netdutils/Syscalls.h')
-rw-r--r--common/netd/libnetdutils/include/netdutils/Syscalls.h204
1 files changed, 0 insertions, 204 deletions
diff --git a/common/netd/libnetdutils/include/netdutils/Syscalls.h b/common/netd/libnetdutils/include/netdutils/Syscalls.h
deleted file mode 100644
index 36fcd853..00000000
--- a/common/netd/libnetdutils/include/netdutils/Syscalls.h
+++ /dev/null
@@ -1,204 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * 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.
- */
-
-#ifndef NETDUTILS_SYSCALLS_H
-#define NETDUTILS_SYSCALLS_H
-
-#include <memory>
-
-#include <net/if.h>
-#include <poll.h>
-#include <sys/eventfd.h>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <unistd.h>
-
-#include "netdutils/Fd.h"
-#include "netdutils/Slice.h"
-#include "netdutils/Socket.h"
-#include "netdutils/Status.h"
-#include "netdutils/StatusOr.h"
-#include "netdutils/UniqueFd.h"
-#include "netdutils/UniqueFile.h"
-
-namespace android {
-namespace netdutils {
-
-class Syscalls {
- public:
- virtual ~Syscalls() = default;
-
- virtual StatusOr<UniqueFd> open(const std::string& pathname, int flags,
- mode_t mode = 0) const = 0;
-
- virtual StatusOr<UniqueFd> socket(int domain, int type, int protocol) const = 0;
-
- virtual Status getsockname(Fd sock, sockaddr* addr, socklen_t* addrlen) const = 0;
-
- virtual Status getsockopt(Fd sock, int level, int optname, void *optval,
- socklen_t *optlen) const = 0;
-
- virtual Status setsockopt(Fd sock, int level, int optname, const void* optval,
- socklen_t optlen) const = 0;
-
- virtual Status bind(Fd sock, const sockaddr* addr, socklen_t addrlen) const = 0;
-
- virtual Status connect(Fd sock, const sockaddr* addr, socklen_t addrlen) const = 0;
-
- virtual StatusOr<ifreq> ioctl(Fd sock, unsigned long request, ifreq* ifr) const = 0;
-
- virtual StatusOr<UniqueFd> eventfd(unsigned int initval, int flags) const = 0;
-
- virtual StatusOr<int> ppoll(pollfd* fds, nfds_t nfds, double timeout) const = 0;
-
- virtual StatusOr<size_t> writev(Fd fd, const std::vector<iovec>& iov) const = 0;
-
- virtual StatusOr<size_t> write(Fd fd, const Slice buf) const = 0;
-
- virtual StatusOr<Slice> read(Fd fd, const Slice buf) const = 0;
-
- virtual StatusOr<size_t> sendto(Fd sock, const Slice buf, int flags, const sockaddr* dst,
- socklen_t dstlen) const = 0;
-
- virtual StatusOr<Slice> recvfrom(Fd sock, const Slice dst, int flags, sockaddr* src,
- socklen_t* srclen) const = 0;
-
- virtual Status shutdown(Fd fd, int how) const = 0;
-
- virtual Status close(Fd fd) const = 0;
-
- virtual StatusOr<UniqueFile> fopen(const std::string& path, const std::string& mode) const = 0;
-
- virtual StatusOr<int> vfprintf(FILE* file, const char* format, va_list ap) const = 0;
-
- virtual StatusOr<int> vfscanf(FILE* file, const char* format, va_list ap) const = 0;
-
- virtual Status fclose(FILE* file) const = 0;
-
- virtual StatusOr<pid_t> fork() const = 0;
-
- // va_args helpers
- // va_start doesn't work when the preceding argument is a reference
- // type so we're forced to use const char*.
- StatusOr<int> fprintf(FILE* file, const char* format, ...) const {
- va_list ap;
- va_start(ap, format);
- auto result = vfprintf(file, format, ap);
- va_end(ap);
- return result;
- }
-
- // va_start doesn't work when the preceding argument is a reference
- // type so we're forced to use const char*.
- StatusOr<int> fscanf(FILE* file, const char* format, ...) const {
- va_list ap;
- va_start(ap, format);
- auto result = vfscanf(file, format, ap);
- va_end(ap);
- return result;
- }
-
- // Templated helpers that forward directly to methods declared above
- template <typename SockaddrT>
- StatusOr<SockaddrT> getsockname(Fd sock) const {
- SockaddrT addr = {};
- socklen_t addrlen = sizeof(addr);
- RETURN_IF_NOT_OK(getsockname(sock, asSockaddrPtr(&addr), &addrlen));
- return addr;
- }
-
- template <typename SockoptT>
- Status getsockopt(Fd sock, int level, int optname, void* optval, socklen_t* optlen) const {
- return getsockopt(sock, level, optname, optval, optlen);
- }
-
- template <typename SockoptT>
- Status setsockopt(Fd sock, int level, int optname, const SockoptT& opt) const {
- return setsockopt(sock, level, optname, &opt, sizeof(opt));
- }
-
- template <typename SockaddrT>
- Status bind(Fd sock, const SockaddrT& addr) const {
- return bind(sock, asSockaddrPtr(&addr), sizeof(addr));
- }
-
- template <typename SockaddrT>
- Status connect(Fd sock, const SockaddrT& addr) const {
- return connect(sock, asSockaddrPtr(&addr), sizeof(addr));
- }
-
- template <size_t size>
- StatusOr<std::array<uint16_t, size>> ppoll(const std::array<Fd, size>& fds, uint16_t events,
- double timeout) const {
- std::array<pollfd, size> tmp;
- for (size_t i = 0; i < size; ++i) {
- tmp[i].fd = fds[i].get();
- tmp[i].events = events;
- tmp[i].revents = 0;
- }
- RETURN_IF_NOT_OK(ppoll(tmp.data(), tmp.size(), timeout).status());
- std::array<uint16_t, size> out;
- for (size_t i = 0; i < size; ++i) {
- out[i] = tmp[i].revents;
- }
- return out;
- }
-
- template <typename SockaddrT>
- StatusOr<size_t> sendto(Fd sock, const Slice buf, int flags, const SockaddrT& dst) const {
- return sendto(sock, buf, flags, asSockaddrPtr(&dst), sizeof(dst));
- }
-
- // Ignore src sockaddr
- StatusOr<Slice> recvfrom(Fd sock, const Slice dst, int flags) const {
- return recvfrom(sock, dst, flags, nullptr, nullptr);
- }
-
- template <typename SockaddrT>
- StatusOr<std::pair<Slice, SockaddrT>> recvfrom(Fd sock, const Slice dst, int flags) const {
- SockaddrT addr = {};
- socklen_t addrlen = sizeof(addr);
- ASSIGN_OR_RETURN(auto used, recvfrom(sock, dst, flags, asSockaddrPtr(&addr), &addrlen));
- return std::make_pair(used, addr);
- }
-};
-
-// Specialized singleton that supports zero initialization and runtime
-// override of contained pointer.
-class SyscallsHolder {
- public:
- ~SyscallsHolder();
-
- // Return a pointer to an unowned instance of Syscalls.
- Syscalls& get();
-
- // Testing only: set the value returned by getSyscalls. Return the old value.
- // Callers are responsible for restoring the previous value returned
- // by getSyscalls to avoid leaks.
- Syscalls& swap(Syscalls& syscalls);
-
- private:
- std::atomic<Syscalls*> mSyscalls{nullptr};
-};
-
-// Syscalls instance used throughout netdutils
-extern SyscallsHolder sSyscalls;
-
-} // namespace netdutils
-} // namespace android
-
-#endif /* NETDUTILS_SYSCALLS_H */
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