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@ -50,7 +50,8 @@ void slider_handler(int sig)
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{
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/* Kill lipc-wait-event properly on exit */
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if(pclose_arg.pid != 0) {
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kill(pclose_arg.pid, SIGTERM);
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// Be a little more gracious, lipc seems to handle SIGINT properly
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kill(pclose_arg.pid, SIGINT);
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}
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}
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@ -84,7 +85,7 @@ static int openInputDevice(lua_State *L) {
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return luaL_error(L, "cannot fork() slider event listener");
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}
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if(childpid == 0) {
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// Setup signal handler, to cleanup on exit
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// We send a SIGTERM to this child on exit, trap it to kill lipc properly.
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signal(SIGTERM, slider_handler);
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FILE *fp;
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@ -99,25 +100,21 @@ static int openInputDevice(lua_State *L) {
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ev.code = key_code;
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ev.value = 1;
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/* listen power slider events */
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char *exec_file = "lipc-wait-event";
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char *arg1 = "-m"; // Hang for ever, don't exit on the first one: we're in a dedicated child, and we'll be killed/closed on exit, so we don't care
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char *arg2 = "-s";
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char *arg3 = "0";
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char *arg4 = "com.lab126.powerd";
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char *arg5 = "goingToScreenSaver,outOfScreenSaver,charging,notCharging";
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char *arg6 = (char *) NULL;
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char *argv[] = {exec_file, arg1, arg2, arg3, arg4, arg5, arg6};
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/* listen power slider events (listen for ever for multiple events) */
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char *argv[] = {"lipc-wait-event", "-m", "-s", "0", "com.lab126.powerd", "goingToScreenSaver,outOfScreenSaver,charging,notCharging", (char *) NULL};
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/* @TODO 07.06 2012 (houqp)
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* plugin and out event can only be watched by:
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lipc-wait-event com.lab126.hal usbPlugOut,usbPlugIn
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*/
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fp = popen_noshell(exec_file, (const char * const *)argv, "r", &pclose_arg, 0);
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fp = popen_noshell("lipc-wait-event", (const char * const *)argv, "r", &pclose_arg, 0);
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if (!fp) {
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err(EXIT_FAILURE, "popen_noshell()");
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}
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/* Flush to get rid of buffering issues? */
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fflush(fp);
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while(fgets(std_out, sizeof(std_out)-1, fp)) {
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if(std_out[0] == 'g') {
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ev.code = CODE_IN_SAVER;
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@ -147,13 +144,13 @@ static int openInputDevice(lua_State *L) {
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if (status == -1) {
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err(EXIT_FAILURE, "pclose_noshell()");
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} else {
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printf("Power slider event listener child exited with status %d.\n", status);
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printf("lipc-wait-event exited with status %d.\n", status);
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if WIFEXITED(status) {
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printf("Child exited normally with status: %d.\n", WEXITSTATUS(status));
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printf("lipc-wait-event exited normally with status: %d.\n", WEXITSTATUS(status));
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}
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if WIFSIGNALED(status) {
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printf("Child terminated by signal: %d.\n", WTERMSIG(status));
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printf("lipc-wait-event terminated by signal: %d.\n", WTERMSIG(status));
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}
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}
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@ -193,7 +190,7 @@ static int closeInputDevices(lua_State *L) {
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}
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if(slider_pid != -1) {
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/* kill and wait for child process */
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kill(slider_pid, SIGTERM);
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kill(slider_pid, SIGTERM); // We could kill -slider_pid (note the minus) to kill the whole process group, but we trap SIGTERM to handle things nicely
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waitpid(-1, NULL, 0);
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}
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return 0;
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