97206d5727
This renames the LLDB error class to Status, as discussed on the lldb-dev mailing list. A change of this magnitude cannot easily be done without find and replace, but that has potential to catch unwanted occurrences of common strings such as "Error". Every effort was made to find all the obvious things such as the word "Error" appearing in a string, etc, but it's possible there are still some lingering occurences left around. Hopefully nothing too serious. llvm-svn: 302872
128 lines
3.7 KiB
C++
128 lines
3.7 KiB
C++
//===-- DomainSocket.cpp ----------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Host/posix/DomainSocket.h"
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#include "llvm/Support/FileSystem.h"
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#include <stddef.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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using namespace lldb;
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using namespace lldb_private;
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#ifdef __ANDROID__
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// Android does not have SUN_LEN
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#ifndef SUN_LEN
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#define SUN_LEN(ptr) \
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(offsetof(struct sockaddr_un, sun_path) + strlen((ptr)->sun_path))
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#endif
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#endif // #ifdef __ANDROID__
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namespace {
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const int kDomain = AF_UNIX;
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const int kType = SOCK_STREAM;
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bool SetSockAddr(llvm::StringRef name, const size_t name_offset,
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sockaddr_un *saddr_un, socklen_t &saddr_un_len) {
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if (name.size() + name_offset > sizeof(saddr_un->sun_path))
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return false;
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memset(saddr_un, 0, sizeof(*saddr_un));
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saddr_un->sun_family = kDomain;
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memcpy(saddr_un->sun_path + name_offset, name.data(), name.size());
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// For domain sockets we can use SUN_LEN in order to calculate size of
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// sockaddr_un, but for abstract sockets we have to calculate size manually
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// because of leading null symbol.
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if (name_offset == 0)
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saddr_un_len = SUN_LEN(saddr_un);
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else
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saddr_un_len =
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offsetof(struct sockaddr_un, sun_path) + name_offset + name.size();
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#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__)
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saddr_un->sun_len = saddr_un_len;
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#endif
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return true;
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}
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} // namespace
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DomainSocket::DomainSocket(bool should_close, bool child_processes_inherit)
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: Socket(ProtocolUnixDomain, should_close, child_processes_inherit) {}
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DomainSocket::DomainSocket(SocketProtocol protocol,
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bool child_processes_inherit)
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: Socket(protocol, true, child_processes_inherit) {}
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DomainSocket::DomainSocket(NativeSocket socket,
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const DomainSocket &listen_socket)
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: Socket(ProtocolUnixDomain, listen_socket.m_should_close_fd,
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listen_socket.m_child_processes_inherit) {
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m_socket = socket;
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}
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Status DomainSocket::Connect(llvm::StringRef name) {
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sockaddr_un saddr_un;
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socklen_t saddr_un_len;
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if (!SetSockAddr(name, GetNameOffset(), &saddr_un, saddr_un_len))
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return Status("Failed to set socket address");
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Status error;
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m_socket = CreateSocket(kDomain, kType, 0, m_child_processes_inherit, error);
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if (error.Fail())
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return error;
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if (::connect(GetNativeSocket(), (struct sockaddr *)&saddr_un, saddr_un_len) <
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0)
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SetLastError(error);
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return error;
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}
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Status DomainSocket::Listen(llvm::StringRef name, int backlog) {
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sockaddr_un saddr_un;
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socklen_t saddr_un_len;
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if (!SetSockAddr(name, GetNameOffset(), &saddr_un, saddr_un_len))
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return Status("Failed to set socket address");
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DeleteSocketFile(name);
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Status error;
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m_socket = CreateSocket(kDomain, kType, 0, m_child_processes_inherit, error);
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if (error.Fail())
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return error;
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if (::bind(GetNativeSocket(), (struct sockaddr *)&saddr_un, saddr_un_len) ==
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0)
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if (::listen(GetNativeSocket(), backlog) == 0)
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return error;
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SetLastError(error);
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return error;
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}
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Status DomainSocket::Accept(Socket *&socket) {
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Status error;
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auto conn_fd = AcceptSocket(GetNativeSocket(), nullptr, nullptr,
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m_child_processes_inherit, error);
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if (error.Success())
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socket = new DomainSocket(conn_fd, *this);
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return error;
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}
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size_t DomainSocket::GetNameOffset() const { return 0; }
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void DomainSocket::DeleteSocketFile(llvm::StringRef name) {
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llvm::sys::fs::remove(name);
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}
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