From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- ipc/chromium/src/base/process_util_bsd.cc | 167 ++++++++++++++++++++++++++++++ 1 file changed, 167 insertions(+) create mode 100644 ipc/chromium/src/base/process_util_bsd.cc (limited to 'ipc/chromium/src/base/process_util_bsd.cc') diff --git a/ipc/chromium/src/base/process_util_bsd.cc b/ipc/chromium/src/base/process_util_bsd.cc new file mode 100644 index 000000000..57cf7fef9 --- /dev/null +++ b/ipc/chromium/src/base/process_util_bsd.cc @@ -0,0 +1,167 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +// Copyright (c) 2008 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. + +// derived from process_util_mac.cc + +#include "base/process_util.h" + +#include +#include +#include + +#include + +#include "nspr.h" +#include "base/eintr_wrapper.h" + +namespace { + +static mozilla::EnvironmentLog gProcessLog("MOZ_PROCESS_LOG"); + +} // namespace + +namespace base { + +void FreeEnvVarsArray(char* array[], int length) +{ + for (int i = 0; i < length; i++) { + free(array[i]); + } + delete[] array; +} + +bool LaunchApp(const std::vector& argv, + const file_handle_mapping_vector& fds_to_remap, + bool wait, ProcessHandle* process_handle) { + return LaunchApp(argv, fds_to_remap, environment_map(), + wait, process_handle); +} + +bool LaunchApp(const std::vector& argv, + const file_handle_mapping_vector& fds_to_remap, + const environment_map& env_vars_to_set, + bool wait, ProcessHandle* process_handle, + ProcessArchitecture arch) { + return LaunchApp(argv, fds_to_remap, env_vars_to_set, + PRIVILEGES_INHERIT, + wait, process_handle); +} + +bool LaunchApp(const std::vector& argv, + const file_handle_mapping_vector& fds_to_remap, + const environment_map& env_vars_to_set, + ChildPrivileges privs, + bool wait, ProcessHandle* process_handle, + ProcessArchitecture arch) { + bool retval = true; + + char* argv_copy[argv.size() + 1]; + for (size_t i = 0; i < argv.size(); i++) { + argv_copy[i] = const_cast(argv[i].c_str()); + } + argv_copy[argv.size()] = NULL; + + // Make sure we don't leak any FDs to the child process by marking all FDs + // as close-on-exec. + SetAllFDsToCloseOnExec(); + + // Copy environment to a new char array and add the variables + // in env_vars_to_set. + // Existing variables are overwritten by env_vars_to_set. + int pos = 0; + environment_map combined_env_vars = env_vars_to_set; + char **environ = PR_DuplicateEnvironment(); + while(environ[pos] != NULL) { + std::string varString = environ[pos]; + std::string varName = varString.substr(0, varString.find_first_of('=')); + std::string varValue = varString.substr(varString.find_first_of('=') + 1); + if (combined_env_vars.find(varName) == combined_env_vars.end()) { + combined_env_vars[varName] = varValue; + } + PR_Free(environ[pos++]); + } + PR_Free(environ); + int varsLen = combined_env_vars.size() + 1; + + char** vars = new char*[varsLen]; + int i = 0; + for (environment_map::const_iterator it = combined_env_vars.begin(); + it != combined_env_vars.end(); ++it) { + std::string entry(it->first); + entry += "="; + entry += it->second; + vars[i] = strdup(entry.c_str()); + i++; + } + vars[i] = NULL; + + posix_spawn_file_actions_t file_actions; + if (posix_spawn_file_actions_init(&file_actions) != 0) { + FreeEnvVarsArray(vars, varsLen); + return false; + } + + // Turn fds_to_remap array into a set of dup2 calls. + for (file_handle_mapping_vector::const_iterator it = fds_to_remap.begin(); + it != fds_to_remap.end(); + ++it) { + int src_fd = it->first; + int dest_fd = it->second; + + if (src_fd == dest_fd) { + int flags = fcntl(src_fd, F_GETFD); + if (flags != -1) { + fcntl(src_fd, F_SETFD, flags & ~FD_CLOEXEC); + } + } else { + if (posix_spawn_file_actions_adddup2(&file_actions, src_fd, dest_fd) != 0) { + posix_spawn_file_actions_destroy(&file_actions); + FreeEnvVarsArray(vars, varsLen); + return false; + } + } + } + + pid_t pid = 0; + int spawn_succeeded = (posix_spawnp(&pid, + argv_copy[0], + &file_actions, + NULL, + argv_copy, + vars) == 0); + + FreeEnvVarsArray(vars, varsLen); + + posix_spawn_file_actions_destroy(&file_actions); + + bool process_handle_valid = pid > 0; + if (!spawn_succeeded || !process_handle_valid) { + retval = false; + } else { + gProcessLog.print("==> process %d launched child process %d\n", + GetCurrentProcId(), pid); + if (wait) + HANDLE_EINTR(waitpid(pid, 0, 0)); + + if (process_handle) + *process_handle = pid; + } + + return retval; +} + +bool LaunchApp(const CommandLine& cl, + bool wait, bool start_hidden, ProcessHandle* process_handle) { + // TODO(playmobil): Do we need to respect the start_hidden flag? + file_handle_mapping_vector no_files; + return LaunchApp(cl.argv(), no_files, wait, process_handle); +} + +void SetCurrentProcessPrivileges(ChildPrivileges privs) { + +} + +} // namespace base -- cgit v1.2.3