Date: Mon, 21 Nov 2016 16:02:27 +0700 From: Olivier <Olivier.Nicole@cs.ait.ac.th> To: freebsd-hackers@freebsd.org Subject: New behavious in /dev/consolectl Message-ID: <wu7y40dgq8s.fsf@banyan.cs.ait.ac.th>
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Hi,
I am not sure this is the right list to ask the question, but I have the
following problem that is bugging me.
I have a simple program that read the middle button of the mouse at
start-up and reply with (close/pressed or open/released) (see below).
In previous versions of FreeBSD (up to 9 I think), if the middle button
was pressed down when I launched the program, it was detected, and I
could launch and relaunch the program, it was always replying with
"close".
Now (FreeBSD 10), the close is only detected on the first run. The
second run will reply "open", even if I keep the button pressed all the
time between the 2 runs; like if by reading the button, I was erasing
the memory.
Please consider the following examples:
The first run is just to show what is happening to answer the mouse
button action.
Run 2 is started with the button pressed and the output is correct.
After run 2 is aborted and run 3 is launched, the ouput is incorrect.
If I cycle the mouse button between run 3 and 4, the output is then
correct.
Run # mouse
button output
release
1 start program open
open
press closed
& hold closed
hold closed
release open
open
open
CTRL-C
press
& hold
2 start program hold
hold closed
hold closed
hold closed
CTRL-C hold
hold
3 start program hold open
hold open
hold open
hold open
CTRL-C hold
release
press
& hold
4 start program hold closed
hold closed
hold closed
hold closed
CTRL-C hold
I am pretty positive it was not an issue on previous versions of
FreeBSD, as I have been relying on this for a long time because all my
system is built around this feature (mouse button is wired to a switch
that detects if a door if open or closed).
What has been changed in the recent versions of FreeBSD?
Thanks in advance,
Olivier
#include <sys/mouse.h>
#include <sys/consio.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
int main (int argc, char ** argv, char** env) {
int fd_mouse;
struct mouse_info mouse_info;
fd_mouse=open("/dev/consolectl", O_RDWR);
while (1) {
mouse_info.operation=MOUSE_GETINFO;
ioctl(fd_mouse, CONS_MOUSECTL, &mouse_info);
if (((mouse_info.u.data.buttons&(int)2)==2)) {
printf("closed\n");
}
else {
printf("open\n");
}
sleep(1);
}
}
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