Date: Tue, 4 Apr 1995 20:58:42 +1000 From: Bruce Evans <bde@zeta.org.au> To: smpatel@wam.umd.edu, swallace@ece.uci.edu Cc: hackers@FreeBSD.org Subject: Re: Whee - I've got my MBONE feed.. Message-ID: <199504041058.UAA18359@godzilla.zeta.org.au>
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>> On Linux (same VoxWare drivers), this code fragment runs through ok. On
>> FreeBSD, the GETBLKSIZE returns 0 causing the Error.
>>
>Take a look:
>*** /usr/src-2.0/sys/i386/include/soundcard.h Mon Nov 14 06:13:13 1994
>--- /sys/i386/include/soundcard.h Wed Mar 8 13:19:01 1995
>...
old>! #define SNDCTL_DSP_GETBLKSIZE _IOWR('P', 4, int)
new>! #define SNDCTL_DSP_GETBLKSIZE _IOR('P', 4, int)
This was broken on 1995/02/13.
>Perhaps in the kernel sound code, we should have SNDCTL_DSP_GETBLKSIZE
>accept both _IOWR and _IOR types for backwards broken compatability.
>What do you guys think?
The old, broken ioctl must be preserved until you are sure that there
are no applications using it, i.e., "forever".
Bruce
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