Messages in this thread | | | Date | Wed, 12 Nov 2003 15:31:30 +0100 | From | Jens Axboe <> | Subject | Re: ide cdrom sg like access / rpcmgr ? |
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On Wed, Nov 12 2003, Andreas Jellinghaus wrote: > On Wed, 2003-11-12 at 12:36, Jens Axboe wrote: > > Post the code and I'll show you how to do it. Generally, you should just > > use SG_IO or CDROM_SEND_PACKET for this. > > thanks, the code is at > http://www.ilovedvd.co.nz/downloads/unix-linux/rpcmgr11.c
How overly complex :-). I wrote a similar tool, dunno if it still works. Googling shows:
http://www.au.linuxvideo.org/lists/livid-dev/2000-June/msg00649.html
To make the below work, all you probably need to do is change sgio() to use CDROM_SEND_PACKET for instance. That'll work in 2.4 and 2.6. You just need to fill a cdrom_generic_command and send it to the cdrom fd. Ala
struct cdrom_generic_command cgc;
memset(&cgc, 0, sizeof(cgc)); memcpy(cgc.cmd, cdb, sizeof(cdb)); cgc.buffer = the_buffer_to_write_to; cgc.buflen = sizeof(the_buffer_to_write_to); cgc.data_direction = CGC_DATA_READ; cgc.quiet = 1;
if (ioctl(cdrom_fd, CDROM_SEND_PACKET, cdrom_fd) < 0) { perror("CDROM_SEND_PACKET"); return 1; }
/* success */ return 0;
-- Jens Axboe
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