On Thu, Jun 15, 2006 at 12:15:06AM +0200, Sjoerd Simons wrote:
> On Tue, Jun 13, 2006 at 09:05:38PM -0400, Daniel Schepler wrote:
> > On Tuesday 13 June 2006 17:23 pm, you wrote:
> > > On Mon, Jun 05, 2006 at 12:29:55PM -0400, Daniel Schepler wrote:
> > > > I can confirm that this happens on my laptop as well; when a CD is in
> > > > the
> > > > drive, I can hear the drive spinning all the time, although at a lower
> > > > speed than when the disc is being read. After I stop hald manually, the
> > > > drive spins down after about a minute.
> > >
> > > What hal does is poll the cddrive for status every two seconds.. This
> > > shouldn't spin up the drive though.. Could you try to kill/stop the
> > > /usr/lib/hal/hald-addon-storage processes that hal spawns (These poll your
> > > drive) and check if that solves it ?
> >
> > Yes, that solves it.
>
> Ok, well in the ioctl's/commands that the addon uses shouldn't spin up the
> drive.. But well, hardware can do odd things :)
>
> It would be interested to know what actually triggers the spin of the
> drive.. I've attached a little test program which does two of the three things
> the addon usually does. To compile just run gcc test.c -o test.. After that
> run it as root and pass the device name of your cd drive it
> (e.g. ./test /dev/hdc).. Please let me know when the drive spins up (if at
> all)
And ofcourse i forgot the attachment.. Should be there this time :)
Sjoerd
--
Time is nature's way of making sure that everything doesn't happen at once.
Space is nature's way of making sure that everything doesn't happen to you.
#include <stdio.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <assert.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/cdrom.h>
int
main(int argc, char **argv) {
unsigned int drive;
int fd;
fd = open(argv[1], O_RDONLY | O_NONBLOCK | O_EXCL);
if (fd < 0 && errno == EBUSY) {
fd = open(argv[1], O_RDONLY | O_NONBLOCK);
}
assert(fd >= 0);
printf("Doing CDROM_DRIVE_STATUS\n");
drive = ioctl (fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
printf("Got: %x\n", drive);
sleep(5);
printf("Doing CDROM_MEDIA_CHANGEDs\n");
ioctl (fd, CDROM_MEDIA_CHANGED, CDSL_CURRENT);
ioctl (fd, CDROM_MEDIA_CHANGED, CDSL_CURRENT);
return 0;
}
