/
usb_moded.c
1914 lines (1591 loc) · 51.9 KB
/
usb_moded.c
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/**
* @file usb_moded.c
*
* Copyright (C) 2010 Nokia Corporation. All rights reserved.
* Copyright (C) 2012-2018 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 <getopt.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <signal.h>
#include <libkmod.h>
#ifdef SYSTEMD
# include <systemd/sd-daemon.h>
#endif
#include "usb_moded.h"
#include "usb_moded-modes.h"
#include "usb_moded-dbus-private.h"
#include "usb_moded-udev.h"
#include "usb_moded-modules.h"
#include "usb_moded-log.h"
#include "usb_moded-devicelock.h"
#include "usb_moded-modesetting.h"
#include "usb_moded-modules.h"
#include "usb_moded-appsync.h"
#include "usb_moded-trigger.h"
#include "usb_moded-config.h"
#include "usb_moded-config-private.h"
#include "usb_moded-network.h"
#include "usb_moded-mac.h"
#include "usb_moded-android.h"
#include "usb_moded-configfs.h"
#include "usb_moded-systemd.h"
#ifdef MEEGOLOCK
# include "usb_moded-dsme.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
/* ========================================================================= *
* Types
* ========================================================================= */
/** A struct containing all the usb_moded info needed
*/
typedef struct usb_mode
{
/** Connection status
*
* Access only via:
* - usbmoded_set_cable_state()
* - usbmoded_get_connection_state()
*/
cable_state_t cable_state;
/** Mount status, true for mounted -UNUSED atm- */
bool mounted;
/** The logical mode name
*
* Full set of valid modes can occur here
*/
char *internal_mode;
/* The hardware mode name
*
* How the usb hardware has been configured.
*
* For example internal_mode=MODE_ASK gets
* mapped to hardware_mode=MODE_CHARGING */
char *hardware_mode;
/* The external mode;
*
* What was the last mode signaled over D-Bus.
*/
char *external_mode;
/**< The module name for the specific mode */
char *module;
/**< Contains the mode data */
struct mode_list_elem *data;
} usb_mode;
/** Mapping usb mode from internal to hardware/broadcast use */
typedef struct modemapping_t
{
/** Any valid usb mode */
const char *internal_mode;
/** Mode to use for usb configuration, or NULL = internal */
const char *hardware_mode;
/** Mode to use for D-Bus broadcast, or NULL = internal */
const char *external_mode;
} modemapping_t;
/* ========================================================================= *
* Prototypes
* ========================================================================= */
/* -- cable -- */
const char *cable_state_repr(cable_state_t state);
/* -- usbmoded -- */
static const char *usbmoded_map_mode_to_hardware(const char *internal_mode);
static const char *usbmoded_map_mode_to_external(const char *internal_mode);
// ----------------------------------------------------------------
void usbmoded_rethink_usb_charging_fallback(void);
static bool usbmoded_switch_to_charging (void);
static void usbmoded_switch_to_mode (const char *mode);
static void usbmoded_mode_switched (const char *override);
const char *usbmoded_get_hardware_mode (void);
static void usbmoded_update_hardware_mode (void);
const char *usbmoded_get_external_mode (void);
static void usbmoded_update_external_mode (void);
const char *usbmoded_get_usb_mode (void);
void usbmoded_set_usb_mode (const char *internal_mode);
void usbmoded_select_usb_mode (void);
void usbmoded_set_cable_state (cable_state_t cable_state);
cable_state_t usbmoded_get_cable_state (void);
bool usbmoded_get_connection_state (void);
// ----------------------------------------------------------------
// internal movements
static void usbmoded_set_cable_connection_delay (int delay_ms);
static bool usbmoded_mode_in_list (const char *mode, char *const *modes);
int usbmoded_valid_mode (const char *mode);
gchar *usbmoded_get_mode_list (mode_list_type_t type);
const char *usbmoded_get_usb_module (void);
bool usbmoded_set_usb_module (const char *module);
struct mode_list_elem *usbmoded_get_usb_mode_data (void);
void usbmoded_set_usb_mode_data (struct mode_list_elem *data);
void usbmoded_send_supported_modes_signal (void);
void usbmoded_send_available_modes_signal (void);
void usbmoded_send_hidden_modes_signal (void);
void usbmoded_send_whitelisted_modes_signal(void);
static void usbmoded_write_to_sysfs_file (const char *path, const char *text);
void usbmoded_acquire_wakelock (const char *wakelock_name);
void usbmoded_release_wakelock (const char *wakelock_name);
static gboolean usbmoded_allow_suspend_timer_cb (gpointer aptr);
void usbmoded_allow_suspend (void);
void usbmoded_delay_suspend (void);
bool usbmoded_can_export (void);
bool usbmoded_init_done_p (void);
void usbmoded_set_init_done (bool reached);
void usbmoded_probe_init_done (void);
void usbmoded_exit_mainloop (int exitcode);
static void usbmoded_handle_signal (int signum);
static void usbmoded_init (void);
static void usbmoded_cleanup (void);
int usbmoded_system_ (const char *file, int line, const char *func, const char *command);
FILE *usbmoded_popen_ (const char *file, int line, const char *func, const char *command, const char *type);
void usbmoded_usleep_ (const char *file, int line, const char *func, useconds_t usec);
static void usbmoded_usage (void);
/* -- sigpipe -- */
static gboolean sigpipe_read_signal_cb (GIOChannel *channel, GIOCondition condition, gpointer data);
static void sigpipe_trap_signal_cb (int sig);
static bool sigpipe_crate_pipe (void);
static void sigpipe_trap_signals (void);
static bool sigpipe_init (void);
/* ========================================================================= *
* Data
* ========================================================================= */
static int usb_moded_exitcode = EXIT_FAILURE;
static GMainLoop *usb_moded_mainloop = NULL;
bool usbmoded_rescue_mode = false;
static bool diag_mode = false;
static bool hw_fallback = false;
#ifdef SYSTEMD
static bool systemd_notify = false;
#endif
/** Currently allowed cable detection delay
*/
int usbmoded_cable_connection_delay = CABLE_CONNECTION_DELAY_DEFAULT;
static struct usb_mode current_mode = {
.cable_state = CABLE_STATE_UNKNOWN,
.mounted = false,
.internal_mode = NULL,
.hardware_mode = NULL,
.external_mode = NULL,
.module = NULL,
.data = NULL,
};
static GList *modelist = 0;
/** Path to init-done flag file */
static const char init_done_flagfile[] = "/run/systemd/boot-status/init-done";
/** cached init-done-reached state */
static bool init_done_reached = false;
/** Flag for: USB_MODED_WAKELOCK_STATE_CHANGE has been acquired */
static bool blocking_suspend = false;
/** Timer for releasing USB_MODED_WAKELOCK_STATE_CHANGE */
static guint allow_suspend_timer_id = 0;
/** Pipe fd for transferring signals to mainloop context */
static int sigpipe_fd = -1;
static const modemapping_t modemapping[] =
{
{
.internal_mode = MODE_UNDEFINED,
.hardware_mode = MODE_CHARGING,
.external_mode = 0,
},
{
.internal_mode = MODE_ASK,
.hardware_mode = MODE_CHARGING,
.external_mode = 0,
},
{
.internal_mode = MODE_MASS_STORAGE,
.hardware_mode = 0,
.external_mode = 0,
},
{
.internal_mode = MODE_DEVELOPER,
.hardware_mode = 0,
.external_mode = 0,
},
{
.internal_mode = MODE_MTP,
.hardware_mode = 0,
.external_mode = 0,
},
{
.internal_mode = MODE_HOST,
.hardware_mode = 0,
.external_mode = 0,
},
{
.internal_mode = MODE_CONNECTION_SHARING,
.hardware_mode = 0,
.external_mode = 0,
},
{
.internal_mode = MODE_DIAG,
.hardware_mode = 0,
.external_mode = 0,
},
{
.internal_mode = MODE_ADB,
.hardware_mode = 0,
.external_mode = 0,
},
{
.internal_mode = MODE_PC_SUITE,
.hardware_mode = 0,
.external_mode = 0,
},
{
.internal_mode = MODE_CHARGING,
.hardware_mode = MODE_CHARGING,
.external_mode = 0,
},
{
.internal_mode = MODE_CHARGING_FALLBACK,
.hardware_mode = MODE_CHARGING,
.external_mode = MODE_ASK,
},
{
.internal_mode = MODE_CHARGER,
.hardware_mode = MODE_CHARGING,
.external_mode = 0,
},
// sentinel
{
.internal_mode = 0,
.hardware_mode = 0,
.external_mode = 0,
}
};
/* ========================================================================= *
* Functions
* ========================================================================= */
const char *cable_state_repr(cable_state_t state)
{
static const char * const lut[CABLE_STATE_NUMOF] = {
[CABLE_STATE_UNKNOWN] = "unknown",
[CABLE_STATE_DISCONNECTED] = "disconnected",
[CABLE_STATE_CHARGER_CONNECTED] = "charger_connected",
[CABLE_STATE_PC_CONNECTED] = "pc_connected",
};
return lut[state];
}
static const char *
usbmoded_map_mode_to_hardware(const char *internal_mode)
{
const char *hardware_mode = 0;
for( size_t i = 0; modemapping[i].internal_mode; ++i ) {
if( strcmp(modemapping[i].internal_mode, internal_mode) )
continue;
hardware_mode = modemapping[i].hardware_mode;
break;
}
return hardware_mode ?: internal_mode;
}
static const char *
usbmoded_map_mode_to_external(const char *internal_mode)
{
const char *external_mode = 0;
for( size_t i = 0; modemapping[i].internal_mode; ++i ) {
if( strcmp(modemapping[i].internal_mode, internal_mode) )
continue;
external_mode = modemapping[i].external_mode;
break;
}
return external_mode ?: internal_mode;
}
/** Check if we can/should leave charging fallback mode
*
* Called when device lock status, or device status (dsme)
* changes.
*/
void
usbmoded_rethink_usb_charging_fallback(void)
{
/* Cable must be connected to a pc */
if( usbmoded_get_cable_state() != CABLE_STATE_PC_CONNECTED )
goto EXIT;
/* Switching can happen only from MODE_UNDEFINED
* or MODE_CHARGING_FALLBACK */
const char *usb_mode = usbmoded_get_usb_mode();
if( strcmp(usb_mode, MODE_UNDEFINED) &&
strcmp(usb_mode, MODE_CHARGING_FALLBACK) )
goto EXIT;
if( !usbmoded_can_export() ) {
log_notice("exporting data not allowed; stay in %s", usb_mode);
goto EXIT;
}
log_debug("attempt to leave %s", usb_mode);
usbmoded_select_usb_mode();
EXIT:
return;
}
static bool usbmoded_switch_to_charging(void)
{
bool ack = true;
if( android_set_charging_mode() )
goto SUCCESS;
if( configfs_set_charging_mode() )
goto SUCCESS;
if( modules_in_use() ) {
if( usbmoded_set_usb_module(MODULE_MASS_STORAGE) )
goto SUCCESS;
usbmoded_set_usb_module(MODULE_NONE);
}
log_err("switch to charging mode failed");
ack = false;
SUCCESS:
return ack;
}
static void usbmoded_switch_to_mode(const char *mode)
{
const char *override = 0;
/* set return to 1 to be sure to error out if no matching mode is found either */
log_debug("Cleaning up previous mode");
if( usbmoded_get_usb_mode_data() ) {
modesetting_unset_dynamic_mode();
usbmoded_set_usb_mode_data(NULL);
}
log_debug("Setting %s\n", mode);
/* Mode mapping should mean we only see MODE_CHARGING here, but just
* in case redirect fixed charging related things to charging ... */
if( !strcmp(mode, MODE_CHARGING) ||
!strcmp(mode, MODE_CHARGING_FALLBACK) ||
!strcmp(mode, MODE_CHARGER) ||
!strcmp(mode, MODE_UNDEFINED) ||
!strcmp(mode, MODE_ASK)) {
goto CHARGE;
}
if( !usbmoded_can_export() ) {
log_warning("Policy does not allow mode: %s", mode);
goto CHARGE;
}
/* go through all the dynamic modes if the modelist exists*/
for( GList *iter = modelist; iter; iter = g_list_next(iter) )
{
struct mode_list_elem *data = iter->data;
if( strcmp(mode, data->mode_name) )
continue;
log_debug("Matching mode %s found.\n", mode);
/* set data before calling any of the dynamic mode functions
* as they will use the usbmoded_get_usb_mode_data function */
usbmoded_set_usb_mode_data(data);
if( !usbmoded_set_usb_module(data->mode_module) )
break;
if( !modesetting_set_dynamic_mode() )
break;
goto SUCCESS;
}
log_warning("mode setting failed, fall back to charging");
usbmoded_set_usb_mode_data(NULL);
override = MODE_CHARGING_FALLBACK;
CHARGE:
if( usbmoded_switch_to_charging() )
goto SUCCESS;
log_crit("failed to activate charging, all bets are off");
/* FIXME: double check this error path */
/* If we get here then usb_module loading failed,
* no mode matched, and charging setup failed too.
*/
override = MODE_UNDEFINED;
usbmoded_set_usb_module(MODULE_NONE);
mode = MODE_UNDEFINED;
log_debug("mode setting failed or device disconnected, mode to set was = %s\n", mode);
SUCCESS:
/* TODO: WORKER -> MAIN THREAD BARRIER */
usbmoded_mode_switched(override);
return;
}
const char *usbmoded_get_hardware_mode(void)
{
return current_mode.hardware_mode ?: MODE_UNDEFINED;
}
static void usbmoded_update_hardware_mode(void)
{
const char *internal_mode = usbmoded_get_usb_mode();
const char *hardware_mode = usbmoded_map_mode_to_hardware(internal_mode);
gchar *previous = current_mode.hardware_mode;
if( !g_strcmp0(previous, hardware_mode) ) {
usbmoded_mode_switched(0);
goto EXIT;
}
log_debug("hardware_mode: %s -> %s",
previous, hardware_mode);
current_mode.hardware_mode = g_strdup(hardware_mode);
g_free(previous);
// DO THE MODESWITCH
/* TODO: MAIN THREAD -> WORKERBARRIER */
usbmoded_switch_to_mode(current_mode.hardware_mode);
EXIT:
return;
}
const char *usbmoded_get_external_mode(void)
{
return current_mode.external_mode ?: MODE_UNDEFINED;
}
static void usbmoded_update_external_mode(void)
{
const char *internal_mode = usbmoded_get_usb_mode();
const char *external_mode = usbmoded_map_mode_to_external(internal_mode);
gchar *previous = current_mode.external_mode;
if( !g_strcmp0(previous, external_mode) )
goto EXIT;
log_debug("external_mode: %s -> %s",
previous, external_mode);
current_mode.external_mode = g_strdup(external_mode);
g_free(previous);
// DO THE DBUS BROADCAST
if( !strcmp(current_mode.external_mode, MODE_ASK) ) {
/* send signal, mode will be set when the dialog service calls
* the set_mode method call. */
umdbus_send_state_signal(USB_CONNECTED_DIALOG_SHOW);
}
umdbus_send_state_signal(current_mode.external_mode);
EXIT:
return;
}
/** get the usb mode
*
* @return the currently set mode
*
*/
const char * usbmoded_get_usb_mode(void)
{
return current_mode.internal_mode;
}
/** set the usb mode
*
* @param mode The requested USB mode
*/
void usbmoded_set_usb_mode(const char *mode)
{
gchar *previous = current_mode.internal_mode;
if( !g_strcmp0(previous, mode) )
goto EXIT;
log_debug("internal_mode: %s -> %s",
previous, mode);
current_mode.internal_mode = g_strdup(mode);
g_free(previous);
// PROPAGATE DOWN TO GADGET CONFIG
usbmoded_update_hardware_mode();
EXIT:
return;
}
static void usbmoded_mode_switched(const char *override)
{
if( override ) {
/* Requested usb mode could not be activated at
* gadget control level. Update state info, but
* leave lower level as-is.
*/
log_debug("internal_mode: %s -> %s (override)",
current_mode.internal_mode,
override);
g_free(current_mode.internal_mode),
current_mode.internal_mode = g_strdup(override);
}
// PROPAGATE UP DBUS
usbmoded_update_external_mode();
return;
}
/** set the chosen usb state
*
* gauge what mode to enter and then call usbmoded_set_usb_mode()
*
*/
void usbmoded_select_usb_mode(void)
{
char *mode_to_set = 0;
if( usbmoded_rescue_mode ) {
log_debug("Entering rescue mode!\n");
usbmoded_set_usb_mode(MODE_DEVELOPER);
goto EXIT;
}
if( diag_mode ) {
log_debug("Entering diagnostic mode!\n");
if( modelist ) {
/* XXX 1st entry is just assumed to be diag mode??? */
GList *iter = modelist;
struct mode_list_elem *data = iter->data;
usbmoded_set_usb_mode(data->mode_name);
}
goto EXIT;
}
mode_to_set = config_get_mode_setting();
/* If there is only one allowed mode, use it without
* going through ask-mode */
if( !strcmp(MODE_ASK, mode_to_set) ) {
// FIXME free() vs g_free() conflict
gchar *available = usbmoded_get_mode_list(AVAILABLE_MODES_LIST);
if( *available && !strchr(available, ',') ) {
free(mode_to_set), mode_to_set = available, available = 0;
}
g_free(available);
}
if( mode_to_set && usbmoded_can_export() ) {
usbmoded_set_usb_mode(mode_to_set);
}
else {
/* config is corrupted or we do not have a mode configured, fallback to charging
* We also fall back here in case the device is locked and we do not
* export the system contents. Or if we are in acting dead mode.
*/
usbmoded_set_usb_mode(MODE_CHARGING_FALLBACK);
}
EXIT:
free(mode_to_set);
}
/** set the usb connection status
*
* @param cable_state CABLE_STATE_DISCONNECTED, ...
*/
void usbmoded_set_cable_state(cable_state_t cable_state)
{
cable_state_t prev = current_mode.cable_state;
current_mode.cable_state = cable_state;
if( current_mode.cable_state == prev )
goto EXIT;
log_debug("current_mode.cable_state: %s -> %s",
cable_state_repr(prev),
cable_state_repr(current_mode.cable_state));
switch( current_mode.cable_state ) {
default:
case CABLE_STATE_DISCONNECTED:
usbmoded_set_usb_mode(MODE_UNDEFINED);
break;
case CABLE_STATE_CHARGER_CONNECTED:
usbmoded_set_usb_mode(MODE_CHARGER);
break;
case CABLE_STATE_PC_CONNECTED:
usbmoded_select_usb_mode();
break;
}
EXIT:
return;
}
/** get the usb connection status
*
* @return CABLE_STATE_DISCONNECTED, ...
*/
cable_state_t usbmoded_get_cable_state(void)
{
return current_mode.cable_state;
}
/** Get if the cable (pc or charger) is connected or not
*
* @ return true if connected, false if disconnected
*/
bool usbmoded_get_connection_state(void)
{
bool connected = false;
switch( usbmoded_get_cable_state() ) {
case CABLE_STATE_CHARGER_CONNECTED:
case CABLE_STATE_PC_CONNECTED:
connected = true;
break;
default:
break;
}
return connected;
}
/** Helper for setting allowed cable detection delay
*
* Used for implementing --max-cable-delay=<ms> option.
*/
static void usbmoded_set_cable_connection_delay(int delay_ms)
{
if( delay_ms < CABLE_CONNECTION_DELAY_MAXIMUM )
usbmoded_cable_connection_delay = delay_ms;
else {
usbmoded_cable_connection_delay = CABLE_CONNECTION_DELAY_MAXIMUM;
log_warning("using maximum connection delay: %d ms",
usbmoded_cable_connection_delay);
}
}
/* check if a mode is in a list */
static bool usbmoded_mode_in_list(const char *mode, char * const *modes)
{
int i;
if (!modes)
return false;
for(i = 0; modes[i] != NULL; i++)
{
if(!strcmp(modes[i], mode))
return true;
}
return false;
}
/** check if a given usb_mode exists
*
* @param mode The mode to look for
* @return 0 if mode exists, 1 if it does not exist
*
*/
int usbmoded_valid_mode(const char *mode)
{
int valid = 1;
/* MODE_ASK, MODE_CHARGER and MODE_CHARGING_FALLBACK are not modes that are settable seen their special 'internal' status
* so we only check the modes that are announed outside. Only exception is the built in MODE_CHARGING */
if(!strcmp(MODE_CHARGING, mode))
valid = 0;
else
{
char *whitelist;
gchar **whitelist_split = NULL;
whitelist = config_get_mode_whitelist();
if (whitelist)
{
whitelist_split = g_strsplit(whitelist, ",", 0);
g_free(whitelist);
}
/* check dynamic modes */
if(modelist)
{
GList *iter;
for( iter = modelist; iter; iter = g_list_next(iter) )
{
struct mode_list_elem *data = iter->data;
if(!strcmp(mode, data->mode_name))
{
if (!whitelist_split || usbmoded_mode_in_list(data->mode_name, whitelist_split))
valid = 0;
break;
}
}
g_strfreev(whitelist_split);
}
}
return valid;
}
/** make a list of all available usb modes
*
* @param type The type of list to return. Supported or available.
* @return a comma-separated list of modes (MODE_ASK not included as it is not a real mode)
*
*/
gchar *usbmoded_get_mode_list(mode_list_type_t type)
{
GString *modelist_str;
modelist_str = g_string_new(NULL);
if(!diag_mode)
{
/* check dynamic modes */
if(modelist)
{
GList *iter;
char *hidden_modes_list, *whitelist;
gchar **hidden_mode_split = NULL, **whitelist_split = NULL;
hidden_modes_list = config_get_hidden_modes();
if(hidden_modes_list)
{
hidden_mode_split = g_strsplit(hidden_modes_list, ",", 0);
g_free(hidden_modes_list);
}
if (type == AVAILABLE_MODES_LIST)
{
whitelist = config_get_mode_whitelist();
if (whitelist)
{
whitelist_split = g_strsplit(whitelist, ",", 0);
g_free(whitelist);
}
}
for( iter = modelist; iter; iter = g_list_next(iter) )
{
struct mode_list_elem *data = iter->data;
/* skip items in the hidden list */
if (usbmoded_mode_in_list(data->mode_name, hidden_mode_split))
continue;
/* if there is a whitelist skip items not in the list */
if (whitelist_split && !usbmoded_mode_in_list(data->mode_name, whitelist_split))
continue;
modelist_str = g_string_append(modelist_str, data->mode_name);
modelist_str = g_string_append(modelist_str, ", ");
}
g_strfreev(hidden_mode_split);
g_strfreev(whitelist_split);
}
/* end with charging mode */
g_string_append(modelist_str, MODE_CHARGING);
return g_string_free(modelist_str, false);
}
else
{
/* diag mode. there is only one active mode */
g_string_append(modelist_str, MODE_DIAG);
return g_string_free(modelist_str, false);
}
}
/** get the supposedly loaded module
*
* @return The name of the loaded module
*
*/
const char * usbmoded_get_usb_module(void)
{
return current_mode.module ?: MODULE_NONE;
}
/** set the loaded module
*
* @param module The module name for the requested mode
*
*/
bool usbmoded_set_usb_module(const char *module)
{
bool ack = false;
if( !module )
module = MODULE_NONE;
const char *current = usbmoded_get_usb_module();
log_debug("current module: %s -> %s", current, module);
if( !g_strcmp0(current, module) )
goto SUCCESS;
if( modules_unload_module(current) != 0 )
goto EXIT;
free(current_mode.module), current_mode.module = 0;
if( modules_load_module(module) != 0 )
goto EXIT;
if( g_strcmp0(module, MODULE_NONE) )
current_mode.module = strdup(module);
SUCCESS:
ack = true;
EXIT:
return ack;
}
/** get the usb mode data
*
* @return a pointer to the usb mode data
*
*/
struct mode_list_elem * usbmoded_get_usb_mode_data(void)
{
return current_mode.data;
}
/** set the mode_list_elem data
*
* @param data mode_list_element pointer
*
*/
void usbmoded_set_usb_mode_data(struct mode_list_elem *data)
{
current_mode.data = data;
}
/** Send supported modes signal
*/
void usbmoded_send_supported_modes_signal(void)
{
gchar *mode_list = usbmoded_get_mode_list(SUPPORTED_MODES_LIST);