[linux-dvb] Re: What's the minor-shift (if there is one set)?

["Aurelian Pop" <puiu@cs.tut.fi>]

> Oops, you are right, that should be 4.
> That would explain the errors you got.

Should it? What if I have more than 4 cards (5 in my case)?

>
> The best solution would be to drop fixed minor numbers
altogether and
> only use devfs. The minor numbers only created a lot of
headaches in
> dvbdev.c for me and I would not mind getting rid of them.
>
> I'll probably change to devfs only in the NEWSTRUCT
branch.
> So, who does not use devfs yet?

I tried using devfs, it is installed, devfsd up and running.

ps -lax shows:

....
040     0     9     0   9   0     0    0 kupdat SW   ?
0:00 [kupdated]
040     0    10     1  -1 -20     0    0 md_thr SW<  ?
0:00 [mdrecoveryd]
140     0    74     1   9   0  1568  672 devfsd S    ?
0:00 devfsd /dev
040     0   515     1   9   0     0    0 end    SW   ?
0:00 [khubd]
040     0   793     1   9   0     0    0 end    SW   ?
0:00 [eth0]
....


mount gives:

/dev/hda5 on / type ext2 (rw)
none on /proc type proc (rw)
devfs on /dev type devfs (rw)
none on /dev/pts type devpts (rw,mode=0620)
none on /dev/shm type tmpfs (rw)
/proc/bus/usb on /proc/bus/usb type usbdevfs
(rw,devmode=0664,devgid=43)



I have changed makedev.napi like this:

rm -rf /dev/dvb
mkdir /dev/dvb
chmod 755 /dev/dvb

mkdir /dev/dvb/card0
chmod 755 /dev/dvb/card0
mknod -m 0666 /dev/dvb/card0/video0    c 250   0
mknod -m 0666 /dev/dvb/card0/audio0    c 250   1
mknod -m 0666 /dev/dvb/card0/sec0      c 250   2
mknod -m 0666 /dev/dvb/card0/frontend0 c 250   3
mknod -m 0666 /dev/dvb/card0/demux0    c 250   4
mknod -m 0666 /dev/dvb/card0/dvr0      c 250   5
mknod -m 0666 /dev/dvb/card0/ca0       c 250   6
mknod -m 0666 /dev/dvb/card0/net0      c 250   7
mknod -m 0666 /dev/dvb/card0/osd0      c 250   8

mkdir /dev/dvb/card1
chmod 755 /dev/dvb/card1
mknod -m 0666 /dev/dvb/card1/video1    c 250  32
mknod -m 0666 /dev/dvb/card1/audio1    c 250  33
mknod -m 0666 /dev/dvb/card1/sec1      c 250  34
mknod -m 0666 /dev/dvb/card1/frontend1 c 250  35
mknod -m 0666 /dev/dvb/card1/demux1    c 250  36
mknod -m 0666 /dev/dvb/card1/dvr1      c 250  37
mknod -m 0666 /dev/dvb/card1/ca1       c 250  38
mknod -m 0666 /dev/dvb/card1/net1      c 250  39
mknod -m 0666 /dev/dvb/card1/osd1      c 250  40

mkdir /dev/dvb/card2
chmod 755 /dev/dvb/card2
mknod -m 0666 /dev/dvb/card2/video2    c 250  64
mknod -m 0666 /dev/dvb/card2/audio2    c 250  65
mknod -m 0666 /dev/dvb/card2/sec2      c 250  66
mknod -m 0666 /dev/dvb/card2/frontend2 c 250  67
mknod -m 0666 /dev/dvb/card2/demux2    c 250  68
mknod -m 0666 /dev/dvb/card2/dvr2      c 250  69
mknod -m 0666 /dev/dvb/card2/ca2       c 250  70
mknod -m 0666 /dev/dvb/card2/net2      c 250  71
mknod -m 0666 /dev/dvb/card2/osd2      c 250  72

mkdir /dev/dvb/card3
chmod 755 /dev/dvb/card3
mknod -m 0666 /dev/dvb/card3/video3    c 250  96
mknod -m 0666 /dev/dvb/card3/audio3    c 250  97
mknod -m 0666 /dev/dvb/card3/sec3      c 250  98
mknod -m 0666 /dev/dvb/card3/frontend3 c 250  99
mknod -m 0666 /dev/dvb/card3/demux3    c 250 100
mknod -m 0666 /dev/dvb/card3/dvr3      c 250 101
mknod -m 0666 /dev/dvb/card3/ca3       c 250 102
mknod -m 0666 /dev/dvb/card3/net3      c 250 103
mknod -m 0666 /dev/dvb/card3/osd3      c 250 104

mkdir /dev/dvb/card4
chmod 755 /dev/dvb/card4
mknod -m 0666 /dev/dvb/card4/video4    c 250 128
mknod -m 0666 /dev/dvb/card4/audio4    c 250 129
mknod -m 0666 /dev/dvb/card4/sec4      c 250 130
mknod -m 0666 /dev/dvb/card4/frontend4 c 250 131
mknod -m 0666 /dev/dvb/card4/demux4    c 250 132
mknod -m 0666 /dev/dvb/card4/dvr4      c 250 133
mknod -m 0666 /dev/dvb/card4/ca4       c 250 134
mknod -m 0666 /dev/dvb/card4/net4      c 250 135
mknod -m 0666 /dev/dvb/card4/osd4      c 250 136


and finally I have changed DVB_NUM_DEVICES in dvbdev.h to 5
(I have 5 cards).

The error is the same:
make: *** [insmod] Error 139

What's the problem?

Since in devfs the major/minor numbers are not used, how
should the mknod commands look like? It somehow has no sense
specifying them, but on the other hand mknod requires that
parameter (because using c type devices)...  Is mknod
supposed to be used to create the devfiles??

The space-naming is inspired from the NAPI documentation
(20010917).
If I'm doing something completely wrong, or if I overlooked
something, please tell me...

Thanks,
Aurelian




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