The Tor Browser: toolkit/xre/MacLaunchHelper.mm@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "MacLaunchHelper.h"

     8 #include "nsMemory.h"

     9 #include "nsAutoPtr.h"

    10 #include "nsIAppStartup.h"

    12 #include <stdio.h>

    13 #include <spawn.h>

    14 #include <crt_externs.h>

    16 using namespace mozilla;

    18 namespace {

    19 cpu_type_t pref_cpu_types[2] = {

    20 #if defined(__i386__)

    21                                  CPU_TYPE_X86,

    22 #elif defined(__x86_64__)

    23                                  CPU_TYPE_X86_64,

    24 #elif defined(__ppc__)

    25                                  CPU_TYPE_POWERPC,

    26 #endif

    27                                  CPU_TYPE_ANY };

    29 cpu_type_t cpu_i386_types[2] = {

    30                                  CPU_TYPE_X86,

    31                                  CPU_TYPE_ANY };

    33 cpu_type_t cpu_x64_86_types[2] = {

    34                                  CPU_TYPE_X86_64,

    35                                  CPU_TYPE_ANY };

    36 }

    38 void LaunchChildMac(int aArgc, char** aArgv,

    39                     uint32_t aRestartType, pid_t *pid)

    40 {

    41   // "posix_spawnp" uses null termination for arguments rather than a count.

    42   // Note that we are not duplicating the argument strings themselves.

    43   nsAutoArrayPtr<char*> argv_copy(new char*[aArgc + 1]);

    44   for (int i = 0; i < aArgc; i++) {

    45     argv_copy[i] = aArgv[i];

    46   }

    47   argv_copy[aArgc] = NULL;

    49   // Initialize spawn attributes.

    50   posix_spawnattr_t spawnattr;

    51   if (posix_spawnattr_init(&spawnattr) != 0) {

    52     printf("Failed to init posix spawn attribute.");

    53     return;

    54   }

    56   cpu_type_t *wanted_type = pref_cpu_types;

    57   size_t attr_count = ArrayLength(pref_cpu_types);

    59   if (aRestartType & nsIAppStartup::eRestarti386) {

    60     wanted_type = cpu_i386_types;

    61     attr_count = ArrayLength(cpu_i386_types);

    62   } else if (aRestartType & nsIAppStartup::eRestartx86_64) {

    63     wanted_type = cpu_x64_86_types;

    64     attr_count = ArrayLength(cpu_x64_86_types);

    65   }

    67   // Set spawn attributes.

    68   size_t attr_ocount = 0;

    69   if (posix_spawnattr_setbinpref_np(&spawnattr, attr_count, wanted_type, &attr_ocount) != 0 ||

    70       attr_ocount != attr_count) {

    71     printf("Failed to set binary preference on posix spawn attribute.");

    72     posix_spawnattr_destroy(&spawnattr);

    73     return;

    74   }

    76   // Pass along our environment.

    77   char** envp = NULL;

    78   char*** cocoaEnvironment = _NSGetEnviron();

    79   if (cocoaEnvironment) {

    80     envp = *cocoaEnvironment;

    81   }

    83   int result = posix_spawnp(pid, argv_copy[0], NULL, &spawnattr, argv_copy, envp);

    85   posix_spawnattr_destroy(&spawnattr);

    87   if (result != 0) {

    88     printf("Process spawn failed with code %d!", result);

    89   }

    90 }

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