/*
* User Mode Init manager - For TI shared transport
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 GNU General Public License
* along with this program;if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <poll.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/utsname.h>
#ifdef ANDROID
#include <private/android_filesystem_config.h>
#include <cutils/log.h>
#endif
#ifdef ANDROID
#include <common/ppoll.h> /* for ppoll */
#endif
#include "uim.h"
#ifndef ANDROID
#define INCLUDE_FM 0
#endif
/* Maintains the exit state of UIM*/
static int exiting;
/* UART configuration parameters*/
int uart_flow_control;
int cust_baud_rate;
char uart_dev_name[15];
unsigned int uart_baud_rate;
struct termios ti;
int line_discipline;
/* BD address as string and a pointer to array of hex bytes */
char uim_bd_address[17];
bdaddr_t *bd_addr;
/* File descriptor for the UART device*/
int dev_fd;
/* Maintains the state of N_TI_WL line discipline installation*/
unsigned char st_state = UNINSTALL_N_TI_WL;
unsigned char prev_st_state = UNINSTALL_N_TI_WL;
/* from kernel's include/linux/rfkill.h
* the header in itself not included because of the
* version mismatch of android kernel headers project
*/
/**
* enum rfkill_operation - operation types
* @RFKILL_OP_ADD: a device was added
* @RFKILL_OP_DEL: a device was removed
* @RFKILL_OP_CHANGE: a device's state changed -- userspace changes one device
* @RFKILL_OP_CHANGE_ALL: userspace changes all devices (of a type, or all)
*/
enum rfkill_operation {
RFKILL_OP_ADD = 0,
RFKILL_OP_DEL,
RFKILL_OP_CHANGE,
RFKILL_OP_CHANGE_ALL,
};
/**
* struct rfkill_event - events for userspace on /dev/rfkill
* @idx: index of dev rfkill
* @type: type of the rfkill struct
* @op: operation code
* @hard: hard state (0/1)
* @soft: soft state (0/1)
*
* Structure used for userspace communication on /dev/rfkill,
* used for events from the kernel and control to the kernel.
*/
#ifdef ANDROID
struct rfkill_event {
__u32 idx;
__u8 type;
__u8 op;
__u8 soft, hard;
} __packed;
#else
struct rfkill_event {
uint32_t idx;
uint8_t type;
uint8_t op;
uint8_t soft, hard;
} __packed;
#endif /* ANDROID */
/* to read events and filter notifications for us */
struct rfkill_event rf_event;
unsigned int rfkill_idx;
/*****************************************************************************/
#ifdef UIM_DEBUG
/* Function to Read the firmware version
* module into the system. Currently used for
* debugging purpose, whenever the baud rate is changed
*/
void read_firmware_version()
{
int index = 0;
char resp_buffer[20] = { 0 };
unsigned char buffer[] = { 0x01, 0x01, 0x10, 0x00 };
UIM_START_FUNC();
UIM_VER(" wrote %d bytes", (int)write(dev_fd, buffer, 4));
UIM_VER(" reading %d bytes", (int)read(dev_fd, resp_buffer, 15));
for (index = 0; index < 15; index++) {
UIM_VER(" %x ", resp_buffer[index]);
}
printf("\n");
}
#endif
/*****************************************************************************/
#ifdef ANDROID /* library for android to do insmod/rmmod */
/* Function to insert the kernel module into the system*/
static int insmod(const char *filename, const char *args)
{
void *module;
unsigned int size;
int ret = -1;
UIM_START_FUNC();
module = (void *)load_file(filename, &size);
if (!module) {
return ret;
}
ret = init_module(module, size, args);
free(module);
return ret;
}
/* Function to remove the kernel module from the system*/
static int rmmod(const char *modname)
{
int ret = -1;
int maxtry = MAX_TRY;
UIM_START_FUNC();
/* Retry MAX_TRY number of times in case of
* failure
*/
while (maxtry-- > 0) {
ret = delete_module(modname, O_NONBLOCK | O_EXCL);
if (ret < 0 && errno == EAGAIN) {
sleep(1);
}
else
break;
}
/* Failed to remove the module
*/
if (ret != 0) {
UIM_ERR("Unable to unload driver module \"%s\": %s",
modname, strerror(errno));
}
return ret;
}
#endif /*ANDROID*/
/*****************************************************************************/
/* Function to read the HCI event from the given file descriptor
*
* This will parse the response received and returns error
* if the required response is not received
*/
int read_hci_event(int fd, unsigned char *buf, int size)
{
int remain, rd;
int count = 0;
int reading = 1;
int rd_retry_count = 0;
struct timespec tm = {0, 50*1000*1000};
UIM_START_FUNC();
UIM_VER(" read_hci_event");
if (size <= 0) {
return -1;
}
/* The first byte identifies the packet type. For HCI event packets, it
* should be 0x04, so we read until we get to the 0x04. */
while (reading) {
rd = read(fd, buf, 1);
if (rd <= 0 && rd_retry_count++ < 4) {
nanosleep(&tm, NULL);
continue;
} else if (rd_retry_count >= 4) {
return -1;
}
if (buf[0] == RESP_PREFIX) {
break;
}
}
count++;
/* The next two bytes are the event code and parameter total length. */
while (count < 3) {
rd = read(fd, buf + count, 3 - count);
if (rd <= 0) {
return -1;
}
count += rd;
}
/* Now we read the parameters. */
if (buf[2] < (size - 3)) {
remain = buf[2];
} else {
remain = size - 3;
}
while ((count - 3) < remain) {
rd = read(fd, buf + count, remain - (count - 3));
if (rd <= 0) {
return -1;
}
count += rd;
}
return count;
}
/* Function to read the Command complete event
*
* This will read the response for the change speed
* command that was sent to configure the UART speed
* with the custom baud rate
*/
static int read_command_complete(int fd, unsigned short opcode)
{
command_complete_t resp;
UIM_START_FUNC();
UIM_VER(" Command complete started");
if (read_hci_event(fd, (unsigned char *)&resp, sizeof(resp)) < 0) {
UIM_ERR(" Invalid response");
return -1;
}
/* Response should be an event packet */
if (resp.uart_prefix != HCI_EVENT_PKT) {
UIM_ERR
(" Error in response: not an event packet, but 0x%02x!",
resp.uart_prefix);
return -1;
}
/* Response should be a command complete event */
if (resp.hci_hdr.evt != EVT_CMD_COMPLETE) {
/* event must be event-complete */
UIM_ERR
(" Error in response: not a cmd-complete event,but 0x%02x!",
resp.hci_hdr.evt);
return -1;
}
if (resp.hci_hdr.plen < 4) {
/* plen >= 4 for EVT_CMD_COMPLETE */
UIM_ERR(" Error in response: plen is not >= 4, but 0x%02x!",
resp.hci_hdr.plen);
return -1;
}
if (resp.cmd_complete.opcode != (unsigned short)opcode) {
UIM_ERR(" Error in response: opcode is 0x%04x, not 0x%04x!",
resp.cmd_complete.opcode, opcode);
return -1;
}
UIM_DBG(" Command complete done");
return resp.status == 0 ? 0 : -1;
}
/* Function to set the default baud rate
*
* The default baud rate of 115200 is set to the UART from the host side
* by making a call to this function.This function is also called before
* making a call to set the custom baud rate
*/
static int set_baud_rate()
{
UIM_START_FUNC();
tcflush(dev_fd, TCIOFLUSH);
/* Get the attributes of UART */
if (tcgetattr(dev_fd, &ti) < 0) {
UIM_ERR(" Can't get port settings");
return -1;
}
/* Change the UART attributes before
* setting the default baud rate*/
cfmakeraw(&ti);
ti.c_cflag |= 1;
ti.c_cflag |= CRTSCTS;
/* Set the attributes of UART after making
* the above changes
*/
tcsetattr(dev_fd, TCSANOW, &ti);
/* Set the actual default baud rate */
cfsetospeed(&ti, B115200);
cfsetispeed(&ti, B115200);
tcsetattr(dev_fd, TCSANOW, &ti);
tcflush(dev_fd, TCIOFLUSH);
UIM_DBG(" set_baud_rate() done");
return 0;
}
/* Function to set the UART custom baud rate.
*
* The UART baud rate has already been
* set to default value 115200 before calling this function.
* The baud rate is then changed to custom baud rate by this function*/
static int set_custom_baud_rate()
{
UIM_START_FUNC();
struct termios2 ti2;
UIM_VER(" Changing baud rate to %u, flow control to %u",
cust_baud_rate, uart_flow_control);
/* Flush non-transmitted output data,
* non-read input data or both*/
tcflush(dev_fd, TCIOFLUSH);
/*Set the UART flow control */
if (uart_flow_control) {
ti.c_cflag |= CRTSCTS;
} else {
ti.c_cflag &= ~CRTSCTS;
}
/*
* Set the parameters associated with the UART
* The change will occur immediately by using TCSANOW
*/
if (tcsetattr(dev_fd, TCSANOW, &ti) < 0) {
UIM_ERR(" Can't set port settings");
return -1;
}
tcflush(dev_fd, TCIOFLUSH);
/*Set the actual baud rate */
ioctl(dev_fd, TCGETS2, &ti2);
ti2.c_cflag &= ~CBAUD;
ti2.c_cflag |= BOTHER;
ti2.c_ospeed = cust_baud_rate;
ioctl(dev_fd, TCSETS2, &ti2);
UIM_DBG(" set_custom_baud_rate() done");
return 0;
}
/*
* Handling the Signals sent from the Kernel Init Manager.
* After receiving the signals, configure the baud rate, flow
* control and Install the N_TI_WL line discipline
*/
int st_sig_handler(int signo)
{
int ldisc, len;
uim_speed_change_cmd cmd;
uim_bdaddr_change_cmd addr_cmd;
UIM_START_FUNC();
/* Raise a signal after when UIM is killed.
* This will exit UIM, and remove the inserted kernel
* modules
*/
if (signo == SIGINT) {
UIM_DBG(" Exiting. . .");
exiting = 1;
return -1;
}
/* Install the line discipline when the signal is received by UIM.
* Whenever the first protocol tries to register with the ST core, the
* ST KIM will send a signal SIGUSR2 to the UIM to install the N_TI_WL
* line discipline and do the host side UART configurations.
*
* On failure, ST KIM's line discipline installation times out, and the
* relevant protocol register fails
*/
if (st_state == INSTALL_N_TI_WL) {
UIM_VER(" signal received, opening %s", uart_dev_name);
dev_fd = open(uart_dev_name, O_RDWR);
if (dev_fd < 0) {
UIM_ERR(" Can't open %s", uart_dev_name);
return -1;
}
/*
* Set only the default baud rate.
* This will set the baud rate to default 115200
*/
if (set_baud_rate() < 0) {
UIM_ERR(" set_baudrate() failed");
close(dev_fd);
return -1;
}
fcntl(dev_fd, F_SETFL,fcntl(dev_fd, F_GETFL) | O_NONBLOCK);
/* Set only thecustom baud rate */
if (cust_baud_rate) {
/* Forming the packet for Change speed command */
cmd.uart_prefix = HCI_COMMAND_PKT;
cmd.hci_hdr.opcode = HCI_HDR_OPCODE;
cmd.hci_hdr.plen = sizeof(unsigned long);
cmd.speed = cust_baud_rate;
/* Writing the change speed command to the UART
* This will change the UART speed at the controller
* side
*/
UIM_VER(" Setting speed to %d", cust_baud_rate);
len = write(dev_fd, &cmd, sizeof(cmd));
if (len < 0) {
UIM_ERR(" Failed to write speed-set command");
close(dev_fd);
return -1;
}
/* Read the response for the Change speed command */
if (read_command_complete(dev_fd, HCI_HDR_OPCODE) < 0) {
close(dev_fd);
return -1;
}
UIM_VER(" Speed changed to %d", cust_baud_rate);
/* Set the actual custom baud rate at the host side */
if (set_custom_baud_rate() < 0) {
UIM_ERR(" set_custom_baud_rate() failed");
close(dev_fd);
return -1;
}
/* Set the uim BD address */
if (uim_bd_address[0] != 0) {
memset(&addr_cmd, 0, sizeof(addr_cmd));
/* Forming the packet for change BD address command*/
addr_cmd.uart_prefix = HCI_COMMAND_PKT;
addr_cmd.hci_hdr.opcode = WRITE_BD_ADDR_OPCODE;
addr_cmd.hci_hdr.plen = sizeof(bdaddr_t);
memcpy(&addr_cmd.addr, bd_addr, sizeof(bdaddr_t));
/* Writing the change BD address command to the UART
* This will change the change BD address at the controller
* side
*/
len = write(dev_fd, &addr_cmd, sizeof(addr_cmd));
if (len < 0) {
UIM_ERR(" Failed to write BD address command");
close(dev_fd);
return -1;
}
/* Read the response for the change BD address command */
if (read_command_complete(dev_fd, WRITE_BD_ADDR_OPCODE) < 0) {
close(dev_fd);
return -1;
}
UIM_VER(" BD address changed to %s", uim_bd_address);
}
#ifdef UIM_DEBUG
read_firmware_version();
#endif
}
/* After the UART speed has been changed, the IOCTL is
* is called to set the line discipline to N_TI_WL
*/
ldisc = line_discipline;
if (ioctl(dev_fd, TIOCSETD, &ldisc) < 0) {
UIM_ERR(" Can't set line discipline");
close(dev_fd);
return -1;
}
UIM_DBG(" Installed N_TI_WL Line displine");
}
else {
UIM_DBG(" Un-Installed N_TI_WL Line displine");
/* UNINSTALL_N_TI_WL - When the Signal is received from KIM */
/* closing UART fd */
close(dev_fd);
}
prev_st_state = st_state;
return 0;
}
int remove_modules()
{
int err = 0;
#ifdef ANDROID
UIM_VER(" Removing gps_drv ");
if (rmmod("gps_drv") != 0) {
UIM_ERR(" Error removing gps_drv module");
err = -1;
} else {
UIM_DBG(" Removed gps_drv module");
}
UIM_VER(" Removing fm_drv ");
if (rmmod("fm_drv") != 0) {
UIM_ERR(" Error removing fm_drv module");
err = -1;
} else {
UIM_DBG(" Removed fm_drv module");
}
UIM_DBG(" Removed fm_drv module");
UIM_VER(" Removing bt_drv ");
if (rmmod("bt_drv") != 0) {
UIM_ERR(" Error removing bt_drv module");
err = -1;
} else {
UIM_DBG(" Removed bt_drv module");
}
UIM_DBG(" Removed bt_drv module");
/*Remove the Shared Transport */
UIM_VER(" Removing st_drv ");
if (rmmod("st_drv") != 0) {
UIM_ERR(" Error removing st_drv module");
err = -1;
} else {
UIM_DBG(" Removed st_drv module ");
}
UIM_DBG(" Removed st_drv module ");
#else
#if INCLUDE_FM
UIM_VER(" Removing fm_drv ");
if (system("rmmod fm_drv") != 0) {
UIM_ERR(" Error removing fm_drv module");
err = -1;
} else {
UIM_DBG(" Removed fm_drv module");
}
#endif /* INCLUDE_FM */
UIM_VER(" Removing bt_drv ");
if (system("rmmod bt_drv") != 0) {
UIM_ERR(" Error removing bt_drv module");
err = -1;
} else {
UIM_DBG(" Removed bt_drv module");
}
/*Remove the Shared Transport */
UIM_VER(" Removing st_drv ");
if (system("rmmod st_drv") != 0) {
UIM_ERR(" Error removing st_drv module");
err = -1;
} else {
UIM_DBG(" Removed st_drv module ");
}
#endif
return err;
}
int change_rfkill_perms(void)
{
int fd, id, sz;
char path[64];
char buf[16];
for (id = 0; id < 50; id++) {
snprintf(path, sizeof(path), "/sys/class/rfkill/rfkill%d/type", id);
fd = open(path, O_RDONLY);
if (fd < 0) {
UIM_DBG("open(%s) failed: %s (%d)\n", path, strerror(errno), errno);
continue;
}
sz = read(fd, &buf, sizeof(buf));
close(fd);
if (sz >= 9 && memcmp(buf, "bluetooth", 9) == 0) {
UIM_DBG("found bluetooth rfkill entry @ %d\n", id);
rfkill_idx = id;
break;
}
}
if (id == 50) {
return -1;
}
#ifdef ANDROID
sprintf(path, "/sys/class/rfkill/rfkill%d/state", id);
sz = chown(path, AID_BLUETOOTH, AID_BLUETOOTH);
if (sz < 0) {
UIM_ERR("change mode failed for %s (%d)\n", path, errno);
return -1;
}
#endif /* ANDROID */
/*
* bluetooth group's user system needs write permission
*/
sz = chmod(path, 0660);
if (sz < 0) {
UIM_ERR("change mode failed for %s (%d)\n", path, errno);
return -1;
}
UIM_DBG("changed permissions for %s(%d) \n", path, sz);
/* end of change_perms */
return 0;
}
void *bt_malloc(size_t size)
{
return malloc(size);
}
/* Function to convert the BD address from ascii to hex value */
bdaddr_t *strtoba(const char *str)
{
const char *ptr = str;
int i;
uint8_t *ba = bt_malloc(sizeof(bdaddr_t));
if (!ba) {
return NULL;
}
for (i = 0; i < 6; i++) {
ba[i] = (uint8_t) strtol(ptr, NULL, 16);
if (i != 5 && !(ptr = strchr(ptr, ':'))) {
ptr = ":00:00:00:00:00";
}
ptr++;
}
return (bdaddr_t *) ba;
}
/*****************************************************************************/
int main(int argc, char *argv[])
{
int st_fd,err;
struct stat file_stat;
#ifndef ANDROID /* used on ubuntu */
char *tist_ko_path;
struct utsname name;
#endif
struct pollfd p;
sigset_t sigs;
UIM_START_FUNC();
err = 0;
/* Parse the user input */
if ((argc == 5) || (argc == 6)) {
strcpy(uart_dev_name, argv[1]);
uart_baud_rate = atoi(argv[2]);
uart_flow_control = atoi(argv[3]);
line_discipline = atoi(argv[4]);
/* Depending upon the baud rate value, differentiate
* the custom baud rate and default baud rate
*/
switch (uart_baud_rate) {
case 115200:
UIM_VER(" Baudrate 115200");
break;
case 9600:
case 19200:
case 38400:
case 57600:
case 230400:
case 460800:
case 500000:
case 576000:
case 921600:
case 1000000:
case 1152000:
case 1500000:
case 2000000:
case 2500000:
case 3000000:
case 3500000:
case 3686400:
case 4000000:
cust_baud_rate = uart_baud_rate;
UIM_VER(" Baudrate %d", cust_baud_rate);
break;
default:
UIM_ERR(" Inavalid Baud Rate");
break;
}
memset(&uim_bd_address, 0, sizeof(uim_bd_address));
} else {
UIM_ERR(" Invalid arguements");
UIM_ERR(" Usage: uim [Uart device] [Baud rate] [Flow control] [Line discipline] <bd address>");
return -1;
}
if (argc == 6) {
/* BD address passed as string in xx:xx:xx:xx:xx:xx format */
strcpy(uim_bd_address, argv[5]);
bd_addr = strtoba(uim_bd_address);
}
#ifndef ANDROID
if (uname (&name) == -1) {
UIM_ERR("cannot get kernel release name");
return -1;
}
#else /* if ANDROID */
if (0 == lstat("/st_drv.ko", &file_stat)) {
if (insmod("/st_drv.ko", "") < 0) {
UIM_ERR(" Error inserting st_drv module");
return -1;
} else {
UIM_DBG(" Inserted st_drv module");
}
} else {
if (0 == lstat("/dev/rfkill", &file_stat)) {
UIM_DBG("ST built into the kernel ?");
} else {
UIM_ERR("BT/FM/GPS would be unavailable on system");
UIM_ERR(" rfkill device '/dev/rfkill' not found ");
return -1;
}
}
#endif
#ifndef ANDROID
/*-- Insmod of ST driver --*/
asprintf(&tist_ko_path,
"/lib/modules/%s/kernel/drivers/misc/ti-st/st_drv.ko",name.release);
if (0 == lstat(tist_ko_path, &file_stat)) {
if (system("insmod /lib/modules/`uname -r`/kernel/drivers/misc/ti-st/st_drv.ko") != 0) {
UIM_ERR(" Error inserting st_drv module");
free(tist_ko_path);
return -1;
} else {
UIM_DBG(" Inserted st_drv module");
}
} else {
UIM_ERR("ST driver built into the kernel ?");
}
free(tist_ko_path);
#endif
if (change_rfkill_perms() < 0) {
/* possible error condition */
UIM_ERR("rfkill not enabled in st_drv - BT on from UI might fail\n");
}
#ifndef ANDROID
/*-- Insmod of BT driver --*/
asprintf(&tist_ko_path,
"/lib/modules/%s/kernel/drivers/staging/ti-st/bt_drv.ko",name.release);
if (0 == lstat(tist_ko_path, &file_stat)) {
if (system("insmod /lib/modules/`uname -r`/kernel/drivers/staging/ti-st/bt_drv.ko") != 0) {
UIM_ERR(" Error inserting bt_drv module");
system("rmmod st_drv");
free(tist_ko_path);
return -1;
} else {
UIM_DBG(" Inserted bt_drv module");
}
} else {
UIM_ERR("BT driver built into the kernel ?");
}
free(tist_ko_path);
#if INCLUDE_FM
/*-- Insmod of FM driver --*/
asprintf(&tist_ko_path,
"/lib/modules/%s/kernel/drivers/staging/ti-st/fm_drv.ko",name.release);
if (0 == lstat(tist_ko_path, &file_stat)) {
if (system("insmod /lib/modules/`uname -r`/kernel/drivers/staging/ti-st/fm_drv.ko") != 0) {
UIM_ERR(" Error inserting fm_drv module");
system("rmmod bt_drv");
system("rmmod st_drv");
free(tist_ko_path);
return -1;
} else {
UIM_DBG(" Inserted fm_drv module");
}
} else {
UIM_ERR("FM driver built into the kernel ?");
}
free(tist_ko_path);
#endif /* INCLUDE_FM */
#else /* if ANDROID */
if (0 == lstat("/bt_drv.ko", &file_stat)) {
if (insmod("/bt_drv.ko", "") < 0) {
UIM_ERR(" Error inserting bt_drv module, NO BT? ");
} else {
UIM_DBG(" Inserted bt_drv module");
}
} else {
UIM_DBG("BT driver module un-available... ");
UIM_DBG("BT driver built into the kernel ?");
}
if (0 == lstat("/fm_drv.ko", &file_stat)) {
if (insmod("/fm_drv.ko", "") < 0) {
UIM_ERR(" Error inserting fm_drv module, NO FM? ");
} else {
UIM_DBG(" Inserted fm_drv module");
}
} else {
UIM_DBG("FM driver module un-available... ");
UIM_DBG("FM driver built into the kernel ?");
}
if (0 == lstat("/gps_drv.ko", &file_stat)) {
if (insmod("/gps_drv.ko", "") < 0) {
UIM_ERR(" Error inserting gps_drv module, NO GPS? ");
} else {
UIM_DBG(" Inserted gps_drv module");
}
} else {
UIM_DBG("GPS driver module un-available... ");
UIM_DBG("GPS driver built into the kernel ?");
}
if (chmod("/dev/tifm", 0666) < 0) {
UIM_ERR("unable to chmod /dev/tifm");
}
#endif
/* rfkill device's open/poll/read */
st_fd = open("/dev/rfkill", O_RDONLY);
if (st_fd < 0) {
UIM_DBG("unable to open /dev/rfkill (%s)", strerror(errno));
remove_modules();
return -1;
}
p.fd = st_fd;
p.events = POLLERR | POLLHUP | POLLOUT | POLLIN;
sigfillset(&sigs);
sigdelset(&sigs, SIGCHLD);
sigdelset(&sigs, SIGPIPE);
sigdelset(&sigs, SIGTERM);
sigdelset(&sigs, SIGINT);
sigdelset(&sigs, SIGHUP);
RE_POLL:
while (!exiting) {
p.revents = 0;
#ifdef ANDROID
err = ppoll(&p, 1, NULL, &sigs);
#else
err = poll(&p, 1, -1);
#endif /* ANDROID */
if (err < 0 && errno == EINTR) {
continue;
}
if (err) {
break;
}
}
if (!exiting) {
err = read(st_fd, &rf_event, sizeof(rf_event));
UIM_DBG("rf_event: %d, %d, %d, %d, %d\n", rf_event.idx,
rf_event.type, rf_event.op ,rf_event.hard,
rf_event.soft);
if ((rf_event.op == RFKILL_OP_CHANGE) &&
(rf_event.idx == rfkill_idx)) {
if (rf_event.hard == 1) /* hard blocked */ {
st_state = UNINSTALL_N_TI_WL;
} else /* unblocked */ {
st_state = INSTALL_N_TI_WL;
}
if (prev_st_state != st_state) {
st_sig_handler(SIGUSR2);
}
}
goto RE_POLL;
}
if(remove_modules() < 0) {
UIM_ERR(" Error removing modules ");
close(st_fd);
return -1;
}
close(st_fd);
return 0;
}