Tony Breeds wrote:
On Wed, May 13, 2009 at 02:49:38PM -0600, Orion Poplawski wrote:
Is there anyway for periodic (cron like) job running as root on Fedora
10 (and up) to determine time of the last keypress and mouse movement?
Back in the day I could look at the access time of /dev/tty7, but this
appears to be no longer the case (even when moving to /dev/tty1 to
account for the vt1 X shift). Any ideas on how to determine this would
be greatly appreciated.
I'm sure you can write something to read (and log) /dev/input/* This daemon
could be started at system boot and /shouldn't/ interfere with system opperation.
Yours Tony
Thanks, this is the approach I've taken. Yet Another Daemon. <sigh>
--
Orion Poplawski
Technical Manager 303-415-9701 x222
NWRA/CoRA Division FAX: 303-415-9702
3380 Mitchell Lane orion@xxxxxxxxxxxxx
Boulder, CO 80301 http://www.cora.nwra.com
/*
* inputwatch -
*
* inputwatch monitors all of the eventX entries in /dev/input and updates
* the timestamp of the file /var/spool/input when input is detected.
*
* Copyright 2009 Orion Poplawski
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#define _SVID_SOURCE
/* For futimens */
#define _GNU_SOURCE
#include <string.h>
#include <dirent.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/select.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <time.h>
#undef max
#define max(x,y) ((x) > (y) ? (x) : (y))
/* We only want the eventX entries in /dev/input */
int evmatch(const struct dirent *entry) {
return (strncmp("event",entry->d_name,5) == 0);
}
int main(void)
{
struct dirent **inputs;
/* Find all of the eventX entries in /dev/input */
int numfds = scandir("/dev/input", &inputs, evmatch, 0);
if (numfds < 0) {
perror("Cannot scan /dev/input");
exit(1);
}
close(0);
close(1);
close(2);
fd_set rfds;
FD_ZERO(&rfds);
int nfds = 0, inputfd[__FD_SETSIZE], i;
char inputname[__FD_SETSIZE][FILENAME_MAX];
/* Open all of the event files and add them to our select list */
for (i=0; i<numfds; i++) {
sprintf(inputname[i],"/dev/input/%s",inputs[i]->d_name);
inputfd[i] = open(inputname[i], O_RDONLY);
nfds = max(nfds, inputfd[i]);
FD_SET(inputfd[i], &rfds);
}
nfds++;
pid_t pid = fork();
if (pid == 0) {
/* Open our status file */
int evfd = open("/var/spool/input", O_WRONLY|O_CREAT|O_NOCTTY|O_NONBLOCK, 0666);
for (;;) {
/* Reload file descriptors to watch */
fd_set srfds = rfds;
/* Wait for input */
int retval = select(nfds, &srfds, NULL, NULL, NULL);
if (retval > 0) {
/* Drain all input */
for (i=0; i<numfds; i++) {
if (FD_ISSET(inputfd[i],&srfds)) {
char buf[2048];
while (read(inputfd[i], buf, 2048) == 2048) {}
}
}
/* Update the status file */
futimens(evfd, NULL);
struct timespec req, rem;
/* Sleep - we don't need high time resolution on status file */
req.tv_sec = 10;
req.tv_nsec = 0;
nanosleep(&req, &rem);
}
}
}
exit(0);
}
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