TDE
/
tdebase
mirror of https://mirror.git.trinitydesktop.org/gitea/TDE/tdebase
0
0
Fork 0
Code Issues Releases Wiki Activity

Fix tsak crash or hang on certain hardware

Browse Source 
Fix numlock/capslock failures on certain hardware
(cherry picked from commit 20d9ede028)
v3.5.13-sru
Timothy Pearson 12 years ago committed by Slávek Banko
parent d873dc1dba
commit 9e9f59cc3f
1 changed files with 80 additions and 32 deletions
Show Stats Download Patch File Download Diff File

112
tsak/main.cpp
Unescape View File

@ -47,7 +47,9 @@ using namespace std;
#define FIFO_FILE_OUT "/tmp/ksocket-global/tsak"
#define FIFO_LOCKFILE_OUT "/tmp/ksocket-global/tsak.lock"
#define MAX_KEYBOARDS 64
// WARNING
// MAX_KEYBOARDS must be greater than or equal to MAX_INPUT_NODE
#define MAX_KEYBOARDS 128
#define MAX_INPUT_NODE 128
#define TestBit(bit, array) (array[(bit) / 8] & (1 << ((bit) % 8)))
@ -68,6 +70,7 @@ sigset_t block_mask;
int keyboard_fd_num;
int keyboard_fds[MAX_KEYBOARDS];
int child_pids[MAX_KEYBOARDS];
int child_led_pids[MAX_KEYBOARDS];
const char *keycode[256] =
{
@ -121,6 +124,9 @@ void tsak_friendly_termination() {
if (child_pids[i] != 0) {
kill(child_pids[i], SIGTERM);
}
if (child_led_pids[i] != 0) {
kill(child_led_pids[i], SIGTERM);
}
}
// Wait for process termination
@ -150,6 +156,31 @@ int str_ends_with(const char * str, const char * suffix) {
}
// --------------------------------------------------------------------------------------
/*
* Set a file descriptor to blocking or non-blocking mode.
*
* @param fd The file descriptor
* @param blocking 0:non-blocking mode, 1:blocking mode
*
* @return 1:success, 0:failure.
*/
int fd_set_blocking(int fd, int blocking)
{
/* Save the current flags */
int flags = fcntl(fd, F_GETFL, 0);
if (flags == -1) {
return 0;
}
if (blocking) {
flags &= ~O_NONBLOCK;
}
else {
flags |= O_NONBLOCK;
}
return fcntl(fd, F_SETFL, flags) != -1;
}
/* Assign features (supported axes and keys) of the physical input device (devin)
* to the virtual input device (devout) */
static void copy_features(int devin, int devout)
@ -194,28 +225,30 @@ int find_keyboards() {
}
for (i=0; i<MAX_INPUT_NODE; i++) {
snprintf(filename,sizeof(filename), "/dev/input/event%d", i);
snprintf(filename, sizeof(filename), "/dev/input/event%d", i);
fd = open(filename, O_RDWR|O_SYNC);
ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(key_bitmask)), key_bitmask);
// Ensure that we do not detect our own tsak faked keyboards
ioctl (fd, EVIOCGNAME (sizeof (name)), name);
if (str_ends_with(name, "+tsak") == 0) {
/* We assume that anything that has an alphabetic key in the
QWERTYUIOP range in it is the main keyboard. */
for (j = KEY_Q; j <= KEY_P; j++) {
if (TestBit(j, key_bitmask)) {
keyboard_fds[keyboard_fd_num] = fd;
if (fd >= 0) {
ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(key_bitmask)), key_bitmask);
// Ensure that we do not detect our own tsak faked keyboards
ioctl (fd, EVIOCGNAME(sizeof(name)), name);
if (str_ends_with(name, "+tsak") == 0) {
/* We assume that anything that has an alphabetic key in the
QWERTYUIOP range in it is the main keyboard. */
for (j = KEY_Q; j <= KEY_P; j++) {
if (TestBit(j, key_bitmask)) {
keyboard_fds[keyboard_fd_num] = fd;
}
}
}
}
if (keyboard_fds[keyboard_fd_num] == 0) {
close (fd);
}
else {
keyboard_fd_num++;
if (keyboard_fds[keyboard_fd_num] == 0) {
close(fd);
}
else {
keyboard_fd_num++;
}
}
}
return 0;
@ -342,6 +375,9 @@ void restart_tsak()
if (child_pids[i] != 0) {
kill(child_pids[i], SIGKILL);
}
if (child_pids[i] != 0) {
kill(child_led_pids[i], SIGKILL);
}
}
// Wait for process termination
@ -420,6 +456,7 @@ int main (int argc, char *argv[])
try {
for (i=0; i<MAX_KEYBOARDS; i++) {
child_pids[i] = 0;
child_led_pids[i] = 0;
}
if (argc == 2) {
@ -513,6 +550,7 @@ int main (int argc, char *argv[])
else
return 3;
}
fd_set_blocking(devout[current_keyboard], true);
}
if (depcheck == true) {
return 0;
@ -523,10 +561,12 @@ int main (int argc, char *argv[])
if(ioctl(keyboard_fds[current_keyboard], EVIOCGRAB, 2) < 0) {
close(keyboard_fds[current_keyboard]);
fprintf(stderr, "Failed to grab exclusive input device lock");
if (established)
if (established) {
sleep(1);
else
}
else {
return 1;
}
}
else {
ioctl(keyboard_fds[current_keyboard], EVIOCGNAME(UINPUT_MAX_NAME_SIZE), devinfo.name);
@ -564,22 +604,30 @@ int main (int argc, char *argv[])
return 0;
}
int i=fork();
if (i<0) return 9; // fork failed
if (i>0) {
child_led_pids[current_keyboard] = i;
while (1) {
// Replicate LED events from the virtual keyboard to the physical keyboard
int rrd = read(devout[current_keyboard], &revev, size);
if (rrd >= size) {
if (revev.type == EV_LED) {
if (write(keyboard_fds[current_keyboard], &revev, sizeof(revev)) < 0) {
fprintf(stderr, "Unable to replicate LED event\n");
}
}
}
}
return 0;
}
while (1) {
if ((rd = read (keyboard_fds[current_keyboard], ev, size)) < size) {
if ((rd = read(keyboard_fds[current_keyboard], ev, size)) < size) {
fprintf(stderr, "Read failed.\n");
break;
}
// Replicate LED events from the virtual keyboard to the physical keyboard
int rrd = read(devout[current_keyboard], &revev, size);
if (rrd >= size) {
if (revev.type == EV_LED) {
if (write(keyboard_fds[current_keyboard], &revev, sizeof(revev)) < 0) {
fprintf(stderr, "Unable to replicate LED event\n");
}
}
}
if (ev[0].value == 0 && ev[0].type == 1) { // Read the key release event
if (keycode[(ev[0].code)]) {
if (strcmp(keycode[(ev[0].code)], "<control>") == 0) ctrl_down = false;

Write Preview
Loading…
Cancel
Save