Where will I find char-major-6 driver? -- Sincerely,
David Smead http://www.amplepower.com. On Wed, 24 Apr 2002, dman wrote: > On Wed, Apr 24, 2002 at 04:57:26PM -0700, Peter Jay Salzman wrote: > | begin dman <[EMAIL PROTECTED]> > | > On Wed, Apr 24, 2002 at 03:10:47PM -0700, David Smead wrote: > | > | > | > | I'm apparently missing a driver. > | > | > | > | knuth:~# lpq > | > ... > | > | Status: cannot open '/dev/lp0' - 'No such device' > | > > | > | ----------------- > | > | > | > | knuth:~# ls -l /dev/lp0 > | > | crw-rw---- 1 root lp 6, 0 Jun 13 2001 /dev/lp0 > | > > | > This is meaningless. (well, all it means is you have an inode named > | > "lp0". You've got lots of inodes in /dev that you don't have hardware > | > for) > | > | meaningless? > > "Linux doesn't see my SCSI disk, but look - /dev/sda1 is there." > > Actually, the machine has no SCSI disks or controllers. The > presence of the device file has no bearing on the matter. > > | the major and minor numbers are correct. > > Ok, that is something worth verifying. > > | the kernel certainly knows what major number 6 is. the parport > | driver (if present) knows what minor number 0 is. > | > | doesn't matter what you call the *file*. it's the major and minor > | numbers which matter. > | > | > If you use devfs this becomes meaningful (the file won't exist > | > unless the device and driver do). > | > | maybe. maybe not. > > # lsmod | grep lp > lp 6208 0 > > # ls -l /dev/printers/0 /dev/lp0 > crw-rw---- 1 root lp 6, 0 Dec 31 1969 /dev/printers/0 > lr-xr-xr-x 1 root root 10 Apr 18 23:18 /dev/lp0 -> printers/0 > > # rmmod lp > # cd /lib/modules/2.4.18-custom.3/kernel/drivers/char/ > # mv lp.o NOT-lp.o # (otherwise the kernel automatically loads it) > > # ls -l /dev/printers/0 /dev/lp0 > ls: /dev/printers/0: No such file or directory > ls: /dev/lp0: No such file or directory > > The device files exist when I have the driver loaded, and don't exist > when I don't. That is why I said listing the file is meaningful only > when using devfs. > > | depends on how devfsd is configured, doesn't it? > > Yeah, if you configure devfsd wrong and/or check the wrong file :-). > > -D > > -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
