SDL experiment, program hangs in ioctl(keyboard_fd, VT_WAITACTIVE, current_vt);
mobi phil
mobi at mobiphil.com
Mon Apr 19 00:36:44 CEST 2010
Hello,
anybody can help with this? I think that there is a bug with our keyboard
driver...
any sdl application hang in the following call, if started second time...
I reproduced in a simplified the "bad behaving code":
int main()
{
int t = -1;
int tty0_fd = open("/dev/tty0", O_WRONLY, 0);
if( tty0_fd < 0)
{
printf("cannot open /dev/tty0\n");
return -1;
}
else
{
ioctl(tty0_fd, VT_OPENQRY, &t);
printf("new t: %d\n", t);
}
static const char * const vcs = "/dev/tty%d";
char vtpath[12];
sprintf(vtpath, vcs, t);
int keyboard_fd = open(vtpath, O_RDWR, 0);
if(keyboard_fd < 0)
{
printf("cannot open %s\n", vtpath);
return -2;
}
printf("kbfd: %d\n", keyboard_fd);
if ( ioctl(keyboard_fd, VT_ACTIVATE, t) == 0 ) {
ioctl(keyboard_fd, VT_WAITACTIVE, t);
//this never exits......
}
}
--
rgrds,
mobi phil
being mobile, but including technology
http://mobiphil.com
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