Index: base/file_descriptor_shuffle.cc |
diff --git a/base/file_descriptor_shuffle.cc b/base/file_descriptor_shuffle.cc |
deleted file mode 100644 |
index 7ad978729905a9d78a734a89564f56586e2bf706..0000000000000000000000000000000000000000 |
--- a/base/file_descriptor_shuffle.cc |
+++ /dev/null |
@@ -1,96 +0,0 @@ |
-// Copyright (c) 2011 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#include "base/file_descriptor_shuffle.h" |
- |
-#include <unistd.h> |
-#include <stddef.h> |
-#include <ostream> |
- |
-#include "base/eintr_wrapper.h" |
-#include "base/logging.h" |
- |
-namespace base { |
- |
-bool PerformInjectiveMultimapDestructive( |
- InjectiveMultimap* m, InjectionDelegate* delegate) { |
- static const size_t kMaxExtraFDs = 16; |
- int extra_fds[kMaxExtraFDs]; |
- unsigned next_extra_fd = 0; |
- |
- // DANGER: this function may not allocate. |
- |
- for (InjectiveMultimap::iterator i = m->begin(); i != m->end(); ++i) { |
- int temp_fd = -1; |
- |
- // We DCHECK the injectiveness of the mapping. |
- for (InjectiveMultimap::iterator j = i + 1; j != m->end(); ++j) { |
- DCHECK(i->dest != j->dest) << "Both fd " << i->source |
- << " and " << j->source << " map to " << i->dest; |
- } |
- |
- const bool is_identity = i->source == i->dest; |
- |
- for (InjectiveMultimap::iterator j = i + 1; j != m->end(); ++j) { |
- if (!is_identity && i->dest == j->source) { |
- if (temp_fd == -1) { |
- if (!delegate->Duplicate(&temp_fd, i->dest)) |
- return false; |
- if (next_extra_fd < kMaxExtraFDs) { |
- extra_fds[next_extra_fd++] = temp_fd; |
- } else { |
- RAW_LOG(ERROR, "PerformInjectiveMultimapDestructive overflowed " |
- "extra_fds. Leaking file descriptors!"); |
- } |
- } |
- |
- j->source = temp_fd; |
- j->close = false; |
- } |
- |
- if (i->close && i->source == j->dest) |
- i->close = false; |
- |
- if (i->close && i->source == j->source) { |
- i->close = false; |
- j->close = true; |
- } |
- } |
- |
- if (!is_identity) { |
- if (!delegate->Move(i->source, i->dest)) |
- return false; |
- } |
- |
- if (!is_identity && i->close) |
- delegate->Close(i->source); |
- } |
- |
- for (unsigned i = 0; i < next_extra_fd; i++) |
- delegate->Close(extra_fds[i]); |
- |
- return true; |
-} |
- |
-bool PerformInjectiveMultimap(const InjectiveMultimap& m_in, |
- InjectionDelegate* delegate) { |
- InjectiveMultimap m(m_in); |
- return PerformInjectiveMultimapDestructive(&m, delegate); |
-} |
- |
-bool FileDescriptorTableInjection::Duplicate(int* result, int fd) { |
- *result = HANDLE_EINTR(dup(fd)); |
- return *result >= 0; |
-} |
- |
-bool FileDescriptorTableInjection::Move(int src, int dest) { |
- return HANDLE_EINTR(dup2(src, dest)) != -1; |
-} |
- |
-void FileDescriptorTableInjection::Close(int fd) { |
- int ret = HANDLE_EINTR(close(fd)); |
- DPCHECK(ret == 0); |
-} |
- |
-} // namespace base |