ioctl interface to Fsys

Is the ioctl interface to Fsys still limited to 512 bytes?

  • Mario

Mario Charest <mcharest@deletezinformatic.com> wrote:

: Is the ioctl interface to Fsys still limited to 512 bytes?

I don’t recall that ever being a limit; I think it is actually 8k
(IOCPARM_MASK allowing only 13-bits for the data length).

It was limited to 512 bytes way back around 4.22 or so.

John Garvey wrote:

Mario Charest <> mcharest@deletezinformatic.com> > wrote:

: Is the ioctl interface to Fsys still limited to 512 bytes?

I don’t recall that ever being a limit; I think it is actually 8k
(IOCPARM_MASK allowing only 13-bits for the data length).

“John Garvey” <jgarvey@qnx.com> wrote in message
news:9h7j6g$dp9$1@nntp.qnx.com

Mario Charest <> mcharest@deletezinformatic.com> > wrote:

: Is the ioctl interface to Fsys still limited to 512 bytes?

I don’t recall that ever being a limit; I think it is actually 8k
(IOCPARM_MASK allowing only 13-bits for the data length).

Ok thanks,

I’m using the scsi.tgz sample (dated 97) and the doc does mention
a limit of 512.

  • Mario