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Date: Sat, 17 Jun 1995 11:59:58 +0300
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From: "Gennady B. Sorokopud" <gena@NetVision.net.il>
To: <dufault@hda.com>
Subject: SCIOCCOMMAND ioctl - permission denied
Cc: Tomi Vainio <tomppa@zeta.fidata.fi>, <hackers@FreeBSD.org>,
        "Gennady B. Sorokopud" <gena@NetVision.net.il>
Sender: hackers-owner@FreeBSD.org
Precedence: bulk

Hello!

I'm author of xmcd port to FreeBSD platform.
I received some reports from users that claims that xmcd SCSI
interface does not work any more on 2.0.5R.

After some checking i find out that SCIOCCOMMAND ioctl always fail
with "permission denied".

Looking at /sys/scsi/scsi_ioctl.c line 260:

        /* If we can't write the device we can't permit much:
         */
        if (cmd != SCIOCIDENTIFY && !(flags & FWRITE))
                return EACCES;

After commenting out this 2 lines and recompiling the kernel
xmcd started to work fine.

All i need to know is how to call this ioctl so it will not fail.

(I have write permission on the device and i get "permission denied"
even if i'm running xmcd as root).

Any help will be appreciated.

--------
 Gennady B. Sorokopud - System programmer at NetVision Israel.
 E-Mail: gena@NetVision.net.il
 Homepage: http://www.netvision.net.il/~gena

 This message was sent at 06/17/95 11:34:15 by XF-Mail