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Date:      Sat, 27 Jul 2019 00:56:28 +0300
From:      Konstantin Belousov <kostikbel@gmail.com>
To:        Rick Macklem <rmacklem@FreeBSD.org>
Cc:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r350315 - in head/sys: kern sys
Message-ID:  <20190726215628.GE2731@kib.kiev.ua>
In-Reply-To: <201907250546.x6P5kHWq076756@repo.freebsd.org>
References:  <201907250546.x6P5kHWq076756@repo.freebsd.org>

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On Thu, Jul 25, 2019 at 05:46:17AM +0000, Rick Macklem wrote:
> Author: rmacklem
> Date: Thu Jul 25 05:46:16 2019
> New Revision: 350315
> URL: https://svnweb.freebsd.org/changeset/base/350315
> 
> Log:
>   Add kernel support for a Linux compatible copy_file_range(2) syscall.

> Modified: head/sys/kern/syscalls.master
> ==============================================================================
> --- head/sys/kern/syscalls.master	Thu Jul 25 03:55:05 2019	(r350314)
> +++ head/sys/kern/syscalls.master	Thu Jul 25 05:46:16 2019	(r350315)
> @@ -3175,6 +3175,16 @@
>  		    int flag
>  		);
>  	}
> +569	AUE_NULL	STD {
> +		ssize_t copy_file_range(
> +		    int infd,
> +		    _Inout_opt_ off_t *inoffp,
> +		    int outfd,
> +		    _Inout_opt_ off_t *outoffp,
> +		    size_t len,
> +		    unsigned int flags
> +		);
> +	}

I sat to write the compat32 shims, and only then noted that len has size_t
type.  Why is it size_t and not off_t ?



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