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Date: Mon, 28 Nov 2005 14:58:26 +0100
From: Jaroslav Drzik <jaro@coop-voz.sk>
To: freebsd-emulation@freebsd.org
Message-ID: <20051128135826.GA1068@linux.coop>
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Subject: [PATCH] linux TCFLSH ioctl
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Hi

In FreeBSD-6.0-RELEASE is a problem in linux emulation layer  
with emulation of linux ioctl TCFLSH.
In Linux kernel parameter to ioctl is passed as value.
In FreeBSD kernel parameter is passed as reference to value.
The emulation layer was passing parameter to Freebsd ioctl through 
value and thus was not working.

Attached patch is against 6.0-RELEASE

Jaro

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--- compat/linux/linux_ioctl.c.orig	Fri Sep  2 05:52:28 2005
+++ compat/linux/linux_ioctl.c	Thu Nov 24 20:56:25 2005
@@ -806,22 +806,22 @@
 	}
 
 	case LINUX_TCFLSH: {
-		args->cmd = TIOCFLUSH;
+		int val;
 		switch (args->arg) {
 		case LINUX_TCIFLUSH:
-			args->arg = FREAD;
+			val = FREAD;
 			break;
 		case LINUX_TCOFLUSH:
-			args->arg = FWRITE;
+			val = FWRITE;
 			break;
 		case LINUX_TCIOFLUSH:
-			args->arg = FREAD | FWRITE;
+			val = FREAD | FWRITE;
 			break;
 		default:
 			fdrop(fp, td);
 			return (EINVAL);
 		}
-		error = (ioctl(td, (struct ioctl_args *)args));
+		error = (fo_ioctl(fp,TIOCFLUSH,(caddr_t)&val,td->td_ucred,td));
 		break;
 	}
 

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