Change file op |ssize_t|s to FileOperationResult

util/file/file_io.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // 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 "util/file/file_io.h"
 
 #include "base/logging.h"
 #include "base/numerics/safe_conversions.h"
 
 namespace crashpad {
 
 bool LoggingReadFile(FileHandle file, void* buffer, size_t size) {
-  ssize_t expect = base::checked_cast<ssize_t>(size);
-  ssize_t rv = ReadFile(file, buffer, size);
+  FileOperationResult expect = base::checked_cast<FileOperationResult>(size);
+  FileOperationResult rv = ReadFile(file, buffer, size);
   if (rv < 0) {
     PLOG(ERROR) << "read";
     return false;
   }
   if (rv != expect) {
     LOG(ERROR) << "read: expected " << expect << ", observed " << rv;
     return false;
   }
 
   return true;
 }
 
 bool LoggingWriteFile(FileHandle file, const void* buffer, size_t size) {
-  ssize_t expect = base::checked_cast<ssize_t>(size);
-  ssize_t rv = WriteFile(file, buffer, size);
+  FileOperationResult expect = base::checked_cast<FileOperationResult>(size);
+  FileOperationResult rv = WriteFile(file, buffer, size);
   if (rv < 0) {
     PLOG(ERROR) << "write";
     return false;
   }
   if (rv != expect) {
     LOG(ERROR) << "write: expected " << expect << ", observed " << rv;
     return false;
   }
 
   return true;
 }
 
 void CheckedReadFile(FileHandle file, void* buffer, size_t size) {
   CHECK(LoggingReadFile(file, buffer, size));
 }
 
 void CheckedWriteFile(FileHandle file, const void* buffer, size_t size) {
   CHECK(LoggingWriteFile(file, buffer, size));
 }
 
 void CheckedReadFileAtEOF(FileHandle file) {
   char c;
-  ssize_t rv = ReadFile(file, &c, 1);
+  FileOperationResult rv = ReadFile(file, &c, 1);
   if (rv < 0) {
     PCHECK(rv == 0) << "read";
   } else {
     CHECK_EQ(rv, 0) << "read";
   }
 }
 
 void CheckedCloseFile(FileHandle file) {
   CHECK(LoggingCloseFile(file));
 }
 
 }  // namespace crashpad