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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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.
*/
#define TRACE_TAG TRACE_ADB
#include "sysdeps.h"
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
// We only build the affinity WAR code for Linux.
#if defined(__linux__)
#include <sched.h>
#endif
#include "base/file.h"
#include "base/logging.h"
#include "base/stringprintf.h"
#include "adb.h"
#include "adb_auth.h"
#include "adb_listeners.h"
#include "transport.h"
#if defined(WORKAROUND_BUG6558362) && defined(__linux__)
static const bool kWorkaroundBug6558362 = true;
#else
static const bool kWorkaroundBug6558362 = false;
#endif
// We only build the affinity WAR code for Linux.
#if defined(__linux__)
static void adb_set_affinity(void) {
const char affinity_env[] = "ADB_CPU_AFFINITY_BUG6558362";
const char* cpunum_str = getenv(affinity_env);
if (cpunum_str == nullptr || *cpunum_str == '\0') {
return;
}
char* strtol_res;
int cpu_num = strtol(cpunum_str, &strtol_res, 0);
if (*strtol_res != '\0') {
fatal("bad number (%s) in env var %s. Expecting 0..n.\n", cpunum_str,
affinity_env);
}
cpu_set_t cpu_set;
sched_getaffinity(0, sizeof(cpu_set), &cpu_set);
D("orig cpu_set[0]=0x%08lx\n", cpu_set.__bits[0]);
CPU_ZERO(&cpu_set);
CPU_SET(cpu_num, &cpu_set);
sched_setaffinity(0, sizeof(cpu_set), &cpu_set);
sched_getaffinity(0, sizeof(cpu_set), &cpu_set);
D("new cpu_set[0]=0x%08lx\n", cpu_set.__bits[0]);
}
#endif
#if defined(_WIN32)
static const char kNullFileName[] = "NUL";
static BOOL WINAPI ctrlc_handler(DWORD type) {
exit(STATUS_CONTROL_C_EXIT);
return TRUE;
}
static std::string GetLogFilePath() {
const char log_name[] = "adb.log";
char temp_path[MAX_PATH - sizeof(log_name) + 1];
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa364992%28v=vs.85%29.aspx
DWORD nchars = GetTempPath(sizeof(temp_path), temp_path);
CHECK_LE(nchars, sizeof(temp_path));
if (nchars == 0) {
// TODO(danalbert): Log the error message from FormatError().
// Windows unfortunately has two errnos, errno and GetLastError(), so
// I'm not sure what to do about PLOG here. Probably better to just
// ignore it and add a simplified version of FormatError() for use in
// log messages.
LOG(ERROR) << "Error creating log file";
}
return std::string(temp_path) + log_name;
}
#else
static const char kNullFileName[] = "/dev/null";
static std::string GetLogFilePath() {
return std::string("/tmp/adb.log");
}
#endif
static void close_stdin() {
int fd = unix_open(kNullFileName, O_RDONLY);
CHECK_NE(fd, -1);
dup2(fd, STDIN_FILENO);
adb_close(fd);
}
static void setup_daemon_logging(void) {
int fd = unix_open(GetLogFilePath().c_str(), O_WRONLY | O_CREAT | O_APPEND,
0640);
if (fd == -1) {
fd = unix_open(kNullFileName, O_WRONLY);
}
dup2(fd, STDOUT_FILENO);
dup2(fd, STDERR_FILENO);
adb_close(fd);
fprintf(stderr, "--- adb starting (pid %d) ---\n", getpid());
}
int adb_main(int is_daemon, int server_port) {
HOST = 1;
#if defined(_WIN32)
SetConsoleCtrlHandler(ctrlc_handler, TRUE);
#else
signal(SIGPIPE, SIG_IGN);
#endif
init_transport_registration();
#if defined(__linux__)
if (kWorkaroundBug6558362 && is_daemon) {
adb_set_affinity();
}
#endif
usb_init();
local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT);
adb_auth_init();
std::string local_name = android::base::StringPrintf("tcp:%d", server_port);
if (install_listener(local_name, "*smartsocket*", nullptr, 0)) {
LOG(FATAL) << "Could not install *smartsocket* listener";
}
if (is_daemon) {
// Inform our parent that we are up and running.
// TODO(danalbert): Can't use SendOkay because we're sending "OK\n", not
// "OKAY".
// TODO(danalbert): Why do we use stdout for Windows?
#if defined(_WIN32)
int reply_fd = STDOUT_FILENO;
#else
int reply_fd = STDERR_FILENO;
#endif
android::base::WriteStringToFd("OK\n", reply_fd);
close_stdin();
setup_daemon_logging();
}
D("Event loop starting\n");
fdevent_loop();
return 0;
}
int main(int argc, char** argv) {
// adb client/server
adb_sysdeps_init();
adb_trace_init();
D("Handling commandline()\n");
return adb_commandline(argc - 1, const_cast<const char**>(argv + 1));
}
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