/
usb_moded.c
967 lines (798 loc) · 27.6 KB
/
usb_moded.c
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/**
* @file usb_moded.c
*
* Copyright (C) 2010 Nokia Corporation. All rights reserved.
* Copyright (C) 2012-2019 Jolla. All rights reserved.
*
* @author: Philippe De Swert <philippe.de-swert@nokia.com>
* @author: Philippe De Swert <phdeswer@lumi.maa>
* @author: Philippe De Swert <philippedeswert@gmail.com>
* @author: Philippe De Swert <philippe.deswert@jollamobile.com>
* @author: Jonni Rainisto <jonni.rainisto@jollamobile.com>
* @author: Pekka Lundstrom <pekka.lundstrom@jollamobile.com>
* @author: Vesa Halttunen <vesa.halttunen@jollamobile.com>
* @author: Simo Piiroinen <simo.piiroinen@jollamobile.com>
* @author: Thomas Perl <thomas.perl@jolla.com>
* @author: Matti Lehtimaki <matti.lehtimaki@gmail.com>
* @author: Thomas Perl <m@thp.io>
* @author: Martin Jones <martin.jones@jollamobile.com>
* @author: Andrew den Exter <andrew.den.exter@jolla.com>
* @author: Andrew den Exter <andrew.den.exter@jollamobile.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the Lesser GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the Lesser GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "usb_moded.h"
#include "usb_moded-android.h"
#include "usb_moded-appsync.h"
#include "usb_moded-config-private.h"
#include "usb_moded-configfs.h"
#include "usb_moded-control.h"
#include "usb_moded-dbus-private.h"
#include "usb_moded-devicelock.h"
#include "usb_moded-log.h"
#include "usb_moded-mac.h"
#include "usb_moded-modesetting.h"
#include "usb_moded-modules.h"
#include "usb_moded-network.h"
#include "usb_moded-sigpipe.h"
#include "usb_moded-systemd.h"
#include "usb_moded-trigger.h"
#include "usb_moded-udev.h"
#include "usb_moded-worker.h"
#ifdef MEEGOLOCK
# include "usb_moded-dsme.h"
#endif
#include <unistd.h>
#include <getopt.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#ifdef SYSTEMD
# include <systemd/sd-daemon.h>
#endif
/* ========================================================================= *
* Constants
* ========================================================================= */
/* Wakelogging is noisy, do not log it by default */
#ifndef VERBOSE_WAKELOCKING
# define VERBOSE_WAKELOCKING 0
#endif
/** Default allowed cable detection delay
*
* To comply with USB standards, the delay should be
* less than 2 seconds to ensure timely enumeration.
*
* Any value <= zero means no delay.
*/
#define CABLE_CONNECTION_DELAY_DEFAULT 0
/** Maximum allowed cable detection delay
*
* Must be shorter than initial probing delay expected by
* dsme (currently 5 seconds) to avoid reboot loops in
* act dead mode.
*
* And shorter than USB_MODED_SUSPEND_DELAY_DEFAULT_MS to
* allow the timer to trigger also in display off scenarios.
*/
#define CABLE_CONNECTION_DELAY_MAXIMUM 4000
/* ========================================================================= *
* Prototypes
* ========================================================================= */
/* -- usbmoded -- */
GList *usbmoded_get_modelist (void);
void usbmoded_load_modelist (void);
void usbmoded_free_modelist (void);
bool usbmoded_get_rescue_mode (void);
void usbmoded_set_rescue_mode (bool rescue_mode);
bool usbmoded_get_diag_mode (void);
void usbmoded_set_diag_mode (bool diag_mode);
void usbmoded_set_cable_connection_delay(int delay_ms);
int usbmoded_get_cable_connection_delay(void);
static gboolean usbmoded_allow_suspend_timer_cb (gpointer aptr);
void usbmoded_allow_suspend (void);
void usbmoded_delay_suspend (void);
bool usbmoded_init_done_p (void);
void usbmoded_set_init_done (bool reached);
void usbmoded_probe_init_done (void);
bool usbmoded_can_export (void);
void usbmoded_exit_mainloop (int exitcode);
void usbmoded_handle_signal (int signum);
static bool usbmoded_init (void);
static void usbmoded_cleanup (void);
static void usbmoded_usage (void);
static void usbmoded_parse_options (int argc, char *argv[]);
/* ========================================================================= *
* Data
* ========================================================================= */
static int usbmoded_exitcode = EXIT_FAILURE;
static GMainLoop *usbmoded_mainloop = NULL;
static bool usbmoded_hw_fallback = false;
#ifdef SYSTEMD
static bool usbmoded_systemd_notify = false;
#endif
static bool usbmoded_auto_exit = false;
/* ========================================================================= *
* Functions
* ========================================================================= */
/* ------------------------------------------------------------------------- *
* MODELIST
* ------------------------------------------------------------------------- */
static GList *usbmoded_modelist = 0;
GList *
usbmoded_get_modelist(void)
{
LOG_REGISTER_CONTEXT;
return usbmoded_modelist;
}
void
usbmoded_load_modelist(void)
{
LOG_REGISTER_CONTEXT;
if( !usbmoded_modelist ) {
log_notice("load modelist");
usbmoded_modelist = dynconfig_read_mode_list(usbmoded_get_diag_mode());
}
}
void
usbmoded_free_modelist(void)
{
LOG_REGISTER_CONTEXT;
if( usbmoded_modelist ) {
log_notice("free modelist");
dynconfig_free_mode_list(usbmoded_modelist),
usbmoded_modelist = 0;
}
}
/* ------------------------------------------------------------------------- *
* RESCUE_MODE
* ------------------------------------------------------------------------- */
/** Rescue mode flag
*
* When enabled, usb-moded allows developer_mode etc when device is
* booted up with cable connected without requiring device unlock.
* Which can be useful if UI for some reason does not come up.
*/
static bool usbmoded_rescue_mode = false;
bool usbmoded_get_rescue_mode(void)
{
LOG_REGISTER_CONTEXT;
return usbmoded_rescue_mode;
}
void usbmoded_set_rescue_mode(bool rescue_mode)
{
LOG_REGISTER_CONTEXT;
if( usbmoded_rescue_mode != rescue_mode ) {
log_info("rescue_mode: %d -> %d", usbmoded_rescue_mode, rescue_mode);
usbmoded_rescue_mode = rescue_mode;
}
}
/* ------------------------------------------------------------------------- *
* DIAG_MODE
* ------------------------------------------------------------------------- */
/** Diagnostic mode active
*
* In diag mode usb-moded uses separate mode configuration which
* should have exactly one mode defined / available.
*/
static bool usbmoded_diag_mode = false;
bool usbmoded_get_diag_mode(void)
{
LOG_REGISTER_CONTEXT;
return usbmoded_diag_mode;
}
void usbmoded_set_diag_mode(bool diag_mode)
{
LOG_REGISTER_CONTEXT;
if( usbmoded_diag_mode != diag_mode ) {
log_info("diag_mode: %d -> %d", usbmoded_diag_mode, diag_mode);
usbmoded_diag_mode = diag_mode;
}
}
/* ------------------------------------------------------------------------- *
* CABLE_CONNECT_DELAY
* ------------------------------------------------------------------------- */
/** PC connection delay
*
* Slow cable insert / similar physical issues can lead to a charger
* getting initially recognized as a pc connection. This defines how
* long we should wait and see if pc connection gets corrected to a
* charger kind.
*/
static int usbmoded_cable_connection_delay = CABLE_CONNECTION_DELAY_DEFAULT;
/** Helper for setting allowed cable detection delay
*
* Used for implementing --max-cable-delay=<ms> option.
*/
void
usbmoded_set_cable_connection_delay(int delay_ms)
{
LOG_REGISTER_CONTEXT;
if( delay_ms > CABLE_CONNECTION_DELAY_MAXIMUM )
delay_ms = CABLE_CONNECTION_DELAY_MAXIMUM;
if( delay_ms < 0 )
delay_ms = 0;
if( usbmoded_cable_connection_delay != delay_ms ) {
log_info("cable_connection_delay: %d -> %d",
usbmoded_cable_connection_delay,
delay_ms);
usbmoded_cable_connection_delay = delay_ms;
}
}
/** Helper for getting allowed cable detection delay
*/
int
usbmoded_get_cable_connection_delay(void)
{
LOG_REGISTER_CONTEXT;
return usbmoded_cable_connection_delay;
}
/* ------------------------------------------------------------------------- *
* SUSPEND_BLOCKING
* ------------------------------------------------------------------------- */
/** Flag for: USB_MODED_WAKELOCK_STATE_CHANGE has been acquired */
static bool usbmoded_blocking_suspend = false;
/** Timer for releasing USB_MODED_WAKELOCK_STATE_CHANGE */
static guint usbmoded_allow_suspend_timer_id = 0;
/** Timer callback for releasing wakelock acquired via usbmoded_delay_suspend()
*
* @param aptr callback argument (not used)
*/
static gboolean usbmoded_allow_suspend_timer_cb(gpointer aptr)
{
LOG_REGISTER_CONTEXT;
(void)aptr;
usbmoded_allow_suspend_timer_id = 0;
usbmoded_allow_suspend();
return FALSE;
}
/** Release wakelock acquired via usbmoded_delay_suspend()
*
* Meant to be called on usb-moded exit so that wakelocks
* are not left behind.
*/
void usbmoded_allow_suspend(void)
{
LOG_REGISTER_CONTEXT;
if( usbmoded_allow_suspend_timer_id ) {
g_source_remove(usbmoded_allow_suspend_timer_id),
usbmoded_allow_suspend_timer_id = 0;
}
if( usbmoded_blocking_suspend ) {
usbmoded_blocking_suspend = false;
common_release_wakelock(USB_MODED_WAKELOCK_STATE_CHANGE);
}
}
/** Block suspend briefly
*
* Meant to be called in situations usb activity might have woken
* up the device (cable connect while display is off), or could
* allow device to suspend (cable disconnect while display is off).
*
* Allows usb moded some time to finish asynchronous activity and
* other processes to receive and process state changes broadcast
* by usb-moded.
*/
void usbmoded_delay_suspend(void)
{
LOG_REGISTER_CONTEXT;
/* Use of automatically terminating wakelocks also means we need
* to renew the wakelock when extending the suspend delay. */
common_acquire_wakelock(USB_MODED_WAKELOCK_STATE_CHANGE);
usbmoded_blocking_suspend = true;
if( usbmoded_allow_suspend_timer_id )
g_source_remove(usbmoded_allow_suspend_timer_id);
usbmoded_allow_suspend_timer_id =
g_timeout_add(USB_MODED_SUSPEND_DELAY_DEFAULT_MS,
usbmoded_allow_suspend_timer_cb, 0);
}
/* ------------------------------------------------------------------------- *
* CAN_EXPORT
* ------------------------------------------------------------------------- */
/** Check if exposing device data is currently allowed
*
* @return true exposing data is ok, or false otherwise
*/
bool usbmoded_can_export(void)
{
LOG_REGISTER_CONTEXT;
bool can_export = true;
#ifdef MEEGOLOCK
/* Modes that potentially expose data are allowed only when
* device is running in user mode and device is unlocked */
can_export = (dsme_in_user_state() &&
devicelock_have_export_permission());
/* Having bootup rescue mode active is an exception */
if( usbmoded_get_rescue_mode() )
can_export = true;
#endif
return can_export;
}
/* ------------------------------------------------------------------------- *
* INIT_DONE
* ------------------------------------------------------------------------- */
/** Path to init-done flag file */
static const char usbmoded_init_done_flagfile[] = "/run/systemd/boot-status/init-done";
/** cached init-done-reached state */
static bool usbmoded_init_done_reached = false;
/** Check if system has already been successfully booted up
*
* @return true if init-done has been reached, or false otherwise
*/
bool usbmoded_init_done_p(void)
{
LOG_REGISTER_CONTEXT;
return usbmoded_init_done_reached;
}
/** Update cached init-done-reached state */
void usbmoded_set_init_done(bool reached)
{
LOG_REGISTER_CONTEXT;
if( usbmoded_init_done_reached != reached ) {
usbmoded_init_done_reached = reached;
log_warning("init_done -> %s",
usbmoded_init_done_reached ? "reached" : "not reached");
}
}
/** Check whether init-done flag file exists */
void usbmoded_probe_init_done(void)
{
LOG_REGISTER_CONTEXT;
usbmoded_set_init_done(access(usbmoded_init_done_flagfile, F_OK) == 0);
}
/* ------------------------------------------------------------------------- *
* MAINLOOP
* ------------------------------------------------------------------------- */
/** Request orderly exit from mainloop
*/
void usbmoded_exit_mainloop(int exitcode)
{
LOG_REGISTER_CONTEXT;
/* In case multiple exit request get done, retain the
* highest exit code used. */
if( usbmoded_exitcode < exitcode )
usbmoded_exitcode = exitcode;
/* If there is no mainloop to exit, terminate immediately */
if( !usbmoded_mainloop )
{
log_warning("exit requested outside mainloop; exit(%d) now",
usbmoded_exitcode);
exit(usbmoded_exitcode);
}
log_debug("stopping usb-moded mainloop");
g_main_loop_quit(usbmoded_mainloop);
}
void usbmoded_handle_signal(int signum)
{
LOG_REGISTER_CONTEXT;
log_debug("handle signal: %s\n", strsignal(signum));
if( signum == SIGTERM )
{
/* Assume: Stopped by init process */
usbmoded_exit_mainloop(EXIT_SUCCESS);
}
else if( signum == SIGHUP )
{
/* free and read in modelist again */
usbmoded_free_modelist();
usbmoded_load_modelist();
common_send_supported_modes_signal();
common_send_available_modes_signal();
// FIXME invalidate current mode
}
else
{
usbmoded_exit_mainloop(EXIT_FAILURE);
}
}
/* Prepare usb-moded for running the mainloop */
static bool usbmoded_init(void)
{
LOG_REGISTER_CONTEXT;
bool ack = false;
/* Check if we are in mid-bootup */
usbmoded_probe_init_done();
if( !worker_init() ) {
log_crit("worker thread init failed");
goto EXIT;
}
if( !sigpipe_init() ) {
log_crit("signal handler init failed");
goto EXIT;
}
if( usbmoded_get_rescue_mode() && usbmoded_init_done_p() ) {
usbmoded_set_rescue_mode(false);
log_warning("init done passed; rescue mode ignored");
}
/* Connect to SystemBus */
if( !umdbus_init_connection() ) {
log_crit("dbus systembus connection failed");
goto EXIT;
}
/* Start DBus trackers that do async initialization
* so that initial method calls are on the way while
* we do initialization actions that might block. */
/* DSME listener maintains in-user-mode state and is relevant
* only when MEEGOLOCK configure option has been chosen. */
#ifdef MEEGOLOCK
if( !dsme_listener_start() ) {
log_crit("dsme tracking could not be started");
goto EXIT;
}
#endif
/* Devicelock listener maintains devicelock state and is relevant
* only when MEEGOLOCK configure option has been chosen. */
#ifdef MEEGOLOCK
if( !devicelock_start_listener() ) {
log_crit("devicelock tracking could not be started");
goto EXIT;
}
#endif
/* Set daemon config/state data to sane state */
modesetting_init();
/* check config, merge or create if outdated */
if( !config_init() ) {
log_crit("Cannot create or find a valid configuration");
goto EXIT;
}
#ifdef APP_SYNC
appsync_read_list(usbmoded_get_diag_mode());
#endif
/* always read dyn modes even if appsync is not used */
usbmoded_load_modelist();
if(config_check_trigger())
trigger_init();
/* Set-up mac address before kmod */
if(access("/etc/modprobe.d/g_ether.conf", F_OK) != 0)
{
mac_generate_random_mac();
}
/* During bootup the sysfs control structures might
* not be already in there when usb-moded starts up.
* Retry few times unless init done is / gets reached
* while waiting.
*/
for( int i = 10; ; ) {
if( configfs_init() )
break;
if( android_init() )
break;
/* Must probe / poll since we're not yet running mainloop */
usbmoded_probe_init_done();
if( usbmoded_init_done_p() || --i <= 0 ) {
if( !modules_init() )
log_crit("No supported usb control mechanisms found");
break;
}
common_msleep(1000);
}
/* Allow making systemd control ipc */
if( !systemd_control_start() ) {
log_crit("systemd control could not be started");
goto EXIT;
}
/* If usb-moded happens to crash, it could leave appsync processes
* running. To make sure things are in the order expected by usb-moded
* force stopping of appsync processes during usb-moded startup.
*
* The exception is: When usb-moded starts as a part of bootup. Then
* we can be relatively sure that usb-moded has not been running yet
* and therefore no appsync processes have been started and we can
* skip the blocking ipc required to stop the appsync systemd units. */
#ifdef APP_SYNC
if( usbmoded_init_done_p() ) {
log_warning("usb-moded started after init-done; "
"forcing appsync stop");
appsync_stop(true);
}
#endif
/* Claim D-Bus service name before proceeding with things that
* could result in dbus signal broadcasts from usb-moded interface.
*/
if( !umdbus_init_service() ) {
log_crit("usb-moded dbus service init failed");
goto EXIT;
}
/* Initialize udev listener. Can cause mode changes.
*
* Failing here is allowed if '--fallback' commandline option is used.
*/
if( !umudev_init() && !usbmoded_hw_fallback ) {
log_crit("hwal init failed");
goto EXIT;
}
/* Broadcast supported / hidden modes */
// TODO: should this happen before umudev_init()?
common_send_supported_modes_signal();
common_send_available_modes_signal();
common_send_hidden_modes_signal();
common_send_whitelisted_modes_signal();
/* Act on '--fallback' commandline option */
if( usbmoded_hw_fallback ) {
log_warning("Forcing USB state to connected always. ASK mode non functional!");
/* Since there will be no disconnect signals coming from hw the state should not change */
control_set_cable_state(CABLE_STATE_PC_CONNECTED);
}
ack = true;
EXIT:
return ack;
}
/** Release resources allocated by usbmoded_init()
*/
static void usbmoded_cleanup(void)
{
LOG_REGISTER_CONTEXT;
/* Stop the worker thread first to avoid confusion about shared
* resources we are just about to release. */
worker_quit();
/* Detach from SystemBus. Components that hold reference to the
* shared bus connection can still perform cleanup tasks, but new
* references can't be obtained anymore and usb-moded method call
* processing no longer occurs. */
umdbus_cleanup();
/* Stop appsync processes that have been started by usb-moded */
#ifdef APP_SYNC
appsync_stop(false);
#endif
/* Deny making systemd control ipc */
systemd_control_stop();
/* Stop tracking devicelock status */
#ifdef MEEGOLOCK
devicelock_stop_listener();
#endif
/* Stop tracking device state */
#ifdef MEEGOLOCK
dsme_listener_stop();
#endif
/* Stop udev listener */
umudev_quit();
/* Do backend specific cleanup */
modules_quit();
android_quit();
configfs_quit();
/* Undo trigger_init() */
trigger_stop();
/* Undo usbmoded_load_modelist() */
usbmoded_free_modelist();
#ifdef APP_SYNC
/* Undo appsync_read_list() */
appsync_free_appsync_list();
#endif
/* Release dynamic memory */
worker_clear_kernel_module();
worker_clear_hardware_mode();
control_clear_cable_state();
control_clear_internal_mode();
control_clear_external_mode();
control_clear_target_mode();
modesetting_quit();
/* Detach from SessionBus connection used for APP_SYNC_DBUS.
*
* Can be handled separately from SystemBus side wind down. */
#ifdef APP_SYNC
# ifdef APP_SYNC_DBUS
dbusappsync_cleanup();
# endif
#endif
}
/* ========================================================================= *
* MAIN ENTRY
* ========================================================================= */
static const char usbmoded_usage_info[] =
"Usage: usb_moded [OPTION]...\n"
"USB mode daemon\n"
"\n"
" -a, --android_usb_broken\n"
" keep gadget active on broken android kernels\n"
" -i, --android_usb_broken_udev_events\n"
" ignore incorrect disconnect events after mode setting\n"
" -f, --fallback \n"
" assume always connected\n"
" -s, --force-syslog \n"
" log to syslog\n"
" -T, --force-stderr \n"
" log to stderr\n"
" -l, --log-line-info\n"
" log to stderr and show origin of logging\n"
" -D, --debug \n"
" turn on debug printing\n"
" -d, --diag \n"
" turn on diag mode\n"
" -h, --help \n"
" display this help and exit\n"
" -r, --rescue \n"
" rescue mode\n"
#ifdef SYSTEMD
" -n, --systemd \n"
" notify systemd when started up\n"
#endif
" -v, --version \n"
" output version information and exit\n"
" -m, --max-cable-delay=<ms>\n"
" maximum delay before accepting cable connection\n"
" -b, --android-bootup-function=<function>\n"
" Setup given function during bootup. Might be required\n"
" on some devices to make enumeration work on the 1st\n"
" cable connect.\n"
"\n";
static const struct option const usbmoded_long_options[] =
{
{ "android_usb_broken", no_argument, 0, 'a' },
{ "android_usb_broken_udev_events", no_argument, 0, 'i' },
{ "fallback", no_argument, 0, 'd' },
{ "force-syslog", no_argument, 0, 's' },
{ "force-stderr", no_argument, 0, 'T' },
{ "log-line-info", no_argument, 0, 'l' },
{ "debug", no_argument, 0, 'D' },
{ "diag", no_argument, 0, 'd' },
{ "help", no_argument, 0, 'h' },
{ "rescue", no_argument, 0, 'r' },
{ "systemd", no_argument, 0, 'n' },
{ "version", no_argument, 0, 'v' },
{ "max-cable-delay", required_argument, 0, 'm' },
{ "android-bootup-function", required_argument, 0, 'b' },
{ "auto-exit", no_argument, 0, 'Q' },
{ 0, 0, 0, 0 }
};
static const char usbmoded_short_options[] = "aifsTlDdhrnvm:b:Q";
/* Display usbmoded_usage information */
static void usbmoded_usage(void)
{
LOG_REGISTER_CONTEXT;
fprintf(stdout, "%s", usbmoded_usage_info);
}
static void usbmoded_parse_options(int argc, char* argv[])
{
LOG_REGISTER_CONTEXT;
/* Parse the command-line options */
for( ;; ) {
int opt = getopt_long(argc, argv,
usbmoded_short_options,
usbmoded_long_options,
0);
if( opt == -1 )
break;
switch (opt)
{
case 'a':
log_warning("Deprecated option: --android_usb_broken");
break;
case 'i':
log_warning("Deprecated option: --android_usb_broken_udev_events");
break;
case 'f':
usbmoded_hw_fallback = true;
break;
case 's':
log_set_type(LOG_TO_SYSLOG);
break;
case 'T':
log_set_type(LOG_TO_STDERR);
break;
case 'D':
log_set_level(LOG_DEBUG);
break;
case 'l':
log_set_type(LOG_TO_STDERR);
log_set_lineinfo(true);
break;
case 'd':
usbmoded_set_diag_mode(true);
break;
case 'h':
usbmoded_usage();
exit(EXIT_SUCCESS);
case 'r':
usbmoded_set_rescue_mode(true);
break;
#ifdef SYSTEMD
case 'n':
usbmoded_systemd_notify = true;
break;
#endif
case 'v':
printf("USB mode daemon version: %s\n", VERSION);
exit(EXIT_SUCCESS);
case 'm':
usbmoded_set_cable_connection_delay(strtol(optarg, 0, 0));
break;
case 'b':
log_warning("Deprecated option: --android-bootup-function");
break;
case 'Q':
usbmoded_auto_exit = true;
break;
default:
usbmoded_usage();
exit(EXIT_FAILURE);
}
}
}
int main(int argc, char* argv[])
{
LOG_REGISTER_CONTEXT;
/* Library init calls that should be made before
* using library functionality.
*/
#if !GLIB_CHECK_VERSION(2, 36, 0)
g_type_init();
#endif
#if !GLIB_CHECK_VERSION(2, 31, 0)
g_thread_init(NULL);
#endif
dbus_threads_init_default();
/* - - - - - - - - - - - - - - - - - - - *
* OPTIONS
* - - - - - - - - - - - - - - - - - - - */
/* Set logging defaults */
log_init();
log_set_name(basename(*argv));
/* Parse command line options */
usbmoded_parse_options(argc, argv);
fprintf(stderr, "usb_moded %s starting\n", VERSION);
fflush(stderr);
/* Silence common_system() calls */
if( log_get_type() != LOG_TO_STDERR && log_get_level() != LOG_DEBUG )
{
if( !freopen("/dev/null", "a", stdout) ) {
log_err("can't redirect stdout: %m");
}
if( !freopen("/dev/null", "a", stderr) ) {
log_err("can't redirect stderr: %m");
}
}
/* - - - - - - - - - - - - - - - - - - - *
* INITIALIZE
* - - - - - - - - - - - - - - - - - - - */
if( !usbmoded_init() )
goto EXIT;
/* - - - - - - - - - - - - - - - - - - - *
* EXECUTE
* - - - - - - - - - - - - - - - - - - - */
/* Tell systemd that we have started up */
#ifdef SYSTEMD
if( usbmoded_systemd_notify ) {
log_debug("notifying systemd");
sd_notify(0, "READY=1");
}
#endif
/* init succesful, run main loop */
usbmoded_exitcode = EXIT_SUCCESS;
if( usbmoded_auto_exit )
goto EXIT;
usbmoded_mainloop = g_main_loop_new(NULL, FALSE);
log_debug("enter usb-moded mainloop");
g_main_loop_run(usbmoded_mainloop);
log_debug("leave usb-moded mainloop");
g_main_loop_unref(usbmoded_mainloop),
usbmoded_mainloop = 0;
/* - - - - - - - - - - - - - - - - - - - *
* CLEANUP
* - - - - - - - - - - - - - - - - - - - */
EXIT:
usbmoded_cleanup();
/* Memory leak debugging - instruct libdbus to flush resources. */
#if 0
dbus_shutdown();
#endif
/* - - - - - - - - - - - - - - - - - - - *
* EXIT
* - - - - - - - - - - - - - - - - - - - */
/* Must be done just before exit to make sure no more wakelocks
* are taken and left behind on exit path */
usbmoded_allow_suspend();
log_debug("usb-moded return from main, with exit code %d",
usbmoded_exitcode);
return usbmoded_exitcode;
}