>From what I'm told its not specific to hard disk, you can put any laptop HD and it will work the same (?).
Shawn. --- Jens Axboe <[EMAIL PROTECTED]> wrote: > On Mon, Jul 04 2005, Lenz Grimmer wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > Hi Jens! > > > > Thanks for the sample code. I've trimmed the > recipient list a bit... > > > > Jens Axboe wrote: > > > > > Perhaps the IDLE or IDLEIMMEDIATE commands imply > a head parking, that > > > would make sense. As you say, you can hear a > drive parking its head. > > > Here's a test case, it doesn't sound like it's > parking the hard here. > > > > Not here either, but let me check, if I understand > this correctly: > > > > > #include <stdio.h> > > > #include <unistd.h> > > > #include <fcntl.h> > > > #include <sys/ioctl.h> > > > #include <linux/hdreg.h> > > > > > > int main(int argc, char *argv[]) > > > { > > > char cmd[4] = { 0xe1, 0, 0, 0 }; > > > > The "0xe1" in here is what is defined as > "WIN_IDLEIMMEDIATE" in hdreg.h, > > correct? > > Correct. > > > > int fd; > > > > > > if (argc < 2) { > > > printf("%s <dev>\n", argv[0]); > > > return 1; > > > } > > > > > > fd = open(argv[1], O_RDONLY); > > > > Hmm, don't I need to actually have *write* access > for sending an ioctl? > > No, but you need CAP_SYS_RAWIO capability. So run it > as root. > > > > if (fd == -1) { > > > perror("open"); > > > return 1; > > > } > > > > > > if (ioctl(fd, HDIO_DRIVE_CMD, cmd)) > > > perror("ioctl"); > > > > > > close(fd); > > > return 0; > > > } > > > > I will give it another try, after clarifying the > above questions - maybe > > there is a command that will perform the desired > task. If not, I guess > > we're back at snooping what the Windows driver > does here... > > I'm not aware of a generally specificed command, > it's likely that the > ibm drive has a vendor specific one. Or that one of > the idle commands > can be configured to park the drive. Or... I'm not > sure you'll find > anything interesting in the windows driver, I would > imagine that the > user app is the one issuing the ide command (like > the linux equiv would > as well). > > -- > Jens Axboe > > > > ------------------------------------------------------- > SF.Net email is sponsored by: Discover Easy Linux > Migration Strategies > from IBM. Find simple to follow Roadmaps, > straightforward articles, > informative Webcasts and more! Get everything you > need to get up to > speed, fast. > http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click > _______________________________________________ > Hdaps-devel mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/hdaps-devel > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/