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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base/mac/mach_logging.h"
      6 
      7 #include <iomanip>
      8 #include <string>
      9 
     10 #include "base/strings/stringprintf.h"
     11 #include "build/build_config.h"
     12 
     13 #if !defined(OS_IOS)
     14 #include <servers/bootstrap.h>
     15 #endif  // !OS_IOS
     16 
     17 namespace {
     18 
     19 std::string FormatMachErrorNumber(mach_error_t mach_err) {
     20   // For the os/kern subsystem, give the error number in decimal as in
     21   // <mach/kern_return.h>. Otherwise, give it in hexadecimal to make it easier
     22   // to visualize the various bits. See <mach/error.h>.
     23   if (mach_err >= 0 && mach_err < KERN_RETURN_MAX) {
     24     return base::StringPrintf(" (%d)", mach_err);
     25   }
     26   return base::StringPrintf(" (0x%08x)", mach_err);
     27 }
     28 
     29 }  // namespace
     30 
     31 namespace logging {
     32 
     33 MachLogMessage::MachLogMessage(const char* file_path,
     34                                int line,
     35                                LogSeverity severity,
     36                                mach_error_t mach_err)
     37     : LogMessage(file_path, line, severity),
     38       mach_err_(mach_err) {
     39 }
     40 
     41 MachLogMessage::~MachLogMessage() {
     42   stream() << ": "
     43            << mach_error_string(mach_err_)
     44            << FormatMachErrorNumber(mach_err_);
     45 }
     46 
     47 #if !defined(OS_IOS)
     48 
     49 BootstrapLogMessage::BootstrapLogMessage(const char* file_path,
     50                                          int line,
     51                                          LogSeverity severity,
     52                                          kern_return_t bootstrap_err)
     53     : LogMessage(file_path, line, severity),
     54       bootstrap_err_(bootstrap_err) {
     55 }
     56 
     57 BootstrapLogMessage::~BootstrapLogMessage() {
     58   stream() << ": "
     59            << bootstrap_strerror(bootstrap_err_);
     60 
     61   switch (bootstrap_err_) {
     62     case BOOTSTRAP_SUCCESS:
     63     case BOOTSTRAP_NOT_PRIVILEGED:
     64     case BOOTSTRAP_NAME_IN_USE:
     65     case BOOTSTRAP_UNKNOWN_SERVICE:
     66     case BOOTSTRAP_SERVICE_ACTIVE:
     67     case BOOTSTRAP_BAD_COUNT:
     68     case BOOTSTRAP_NO_MEMORY:
     69     case BOOTSTRAP_NO_CHILDREN: {
     70       // Show known bootstrap errors in decimal because that's how they're
     71       // defined in <servers/bootstrap.h>.
     72       stream() << " (" << bootstrap_err_ << ")";
     73       break;
     74     }
     75 
     76     default: {
     77       // bootstrap_strerror passes unknown errors to mach_error_string, so
     78       // format them as they would be if they were handled by
     79       // MachErrorMessage.
     80       stream() << FormatMachErrorNumber(bootstrap_err_);
     81       break;
     82     }
     83   }
     84 }
     85 
     86 #endif  // !OS_IOS
     87 
     88 }  // namespace logging
     89