From owner-svn-src-all@freebsd.org Fri Dec 7 17:21:38 2018 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BA6A2131417B; Fri, 7 Dec 2018 17:21:38 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from mail.baldwin.cx (bigwig.baldwin.cx [IPv6:2001:470:1f11:75::1]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 461AC6EEA9; Fri, 7 Dec 2018 17:21:38 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from John-Baldwins-MacBook-Pro-2.local (ralph.baldwin.cx [66.234.199.215]) by mail.baldwin.cx (Postfix) with ESMTPSA id 9631810B709; Fri, 7 Dec 2018 12:21:36 -0500 (EST) Subject: Re: svn commit: r341689 - in head: lib/libc/sys sys/compat/freebsd32 sys/kern sys/sys To: Konstantin Belousov , src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org References: <201812071517.wB7FHTiI035911@repo.freebsd.org> From: John Baldwin Openpgp: preference=signencrypt Autocrypt: addr=jhb@FreeBSD.org; keydata= xsDiBETQ+XcRBADMFybiq69u+fJRy/0wzqTNS8jFfWaBTs5/OfcV7wWezVmf9sgwn8TW0Dk0 c9MBl0pz+H01dA2ZSGZ5fXlmFIsee1WEzqeJzpiwd/pejPgSzXB9ijbLHZ2/E0jhGBcVy5Yo /Tw5+U/+laeYKu2xb0XPvM0zMNls1ah5OnP9a6Ql6wCgupaoMySb7DXm2LHD1Z9jTsHcAQMD /1jzh2BoHriy/Q2s4KzzjVp/mQO5DSm2z14BvbQRcXU48oAosHA1u3Wrov6LfPY+0U1tG47X 1BGfnQH+rNAaH0livoSBQ0IPI/8WfIW7ub4qV6HYwWKVqkDkqwcpmGNDbz3gfaDht6nsie5Z pcuCcul4M9CW7Md6zzyvktjnbz61BADGDCopfZC4of0Z3Ka0u8Wik6UJOuqShBt1WcFS8ya1 oB4rc4tXfSHyMF63aPUBMxHR5DXeH+EO2edoSwViDMqWk1jTnYza51rbGY+pebLQOVOxAY7k do5Ordl3wklBPMVEPWoZ61SdbcjhHVwaC5zfiskcxj5wwXd2E9qYlBqRg80eSm9obiBCYWxk d2luIDxqb2huQGJhbGR3aW4uY3g+wmMEExECACMCGwMGCwkIBwMCBBUCCAMEFgIDAQIeAQIX gAUCRND5wwIZAQAKCRBy3lIGd+N/BNLXAJ9KIb6teuDL1W+FkCgvv+y8PxKTkACeIUfbn3sl cueBzqTcf09idwa8YTbOwU0ERND5ghAIAPwsO0B7BL+bz8sLlLoQktGxXwXQfS5cInvL17Ds gnr31AKa94j9EnXQyPEj7u0d+LmEe6CGEGDh1OcGFTMVrof2ZzkSy4+FkZwMKJpTiqeaShMh +GojXlwIMDxyADYvBIg3eN5YdFKaPQpfgSqhT+7El7w+wSZZD8pPQuLAnie5iz9C8iKy4/cM SOrHYUK/tO+Nhw8Jjlw94Ik0T80iEhI2t+XBVjwdfjbq3HrJ0ehqdBwukyeJRYKmbn298KOF QVHOEVbHA4rF/37jzaMadK43FgJ0SAhPPF5l4l89z5oPu0b/+5e2inA3b8J3iGZxywjM+Csq 1tqzhltEc7Q+E08AAwUIAL+15XH8bPbjNJdVyg2CMl10JNW2wWg2Q6qdljeaRqeR6zFus7EZ TwtXsNzs5bP8y51PSUDJbeiy2RNCNKWFMndM22TZnk3GNG45nQd4OwYK0RZVrikalmJY5Q6m 7Z164yrZgIXFdKj2t8F+x613/SJW1lIr9/bDp4U9tw0V1g3l2dFtD3p3ZrQ3hpoDtoK70ioI AjjHaIXIAcm3FGZFXy503DOA0KaTWwvOVdYCFLm3zWuSOmrX/GsEc7ovasOWwjPn878qVjbU KWwxQ4QkF4OhUV9zPtf9tDSAZ3x7QSwoKbCoRCZ/xbyTUPyQ1VvNy/mYrBcYlzHodsaqUDjH uW/CSQQYEQIACQUCRND5ggIbDAAKCRBy3lIGd+N/BCO8AJ9j1dWVQWxw/YdTbEyrRKOY8YZN wwCfafMAg8QvmOWnHx3wl8WslCaXaE8= Message-ID: Date: Fri, 7 Dec 2018 09:21:34 -0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <201812071517.wB7FHTiI035911@repo.freebsd.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.4.3 (mail.baldwin.cx); Fri, 07 Dec 2018 12:21:37 -0500 (EST) X-Virus-Scanned: clamav-milter 0.99.2 at mail.baldwin.cx X-Virus-Status: Clean X-Rspamd-Queue-Id: 461AC6EEA9 X-Spamd-Result: default: False [-2.93 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-0.99)[-0.994,0]; NEURAL_HAM_SHORT(-0.94)[-0.936,0]; NEURAL_HAM_LONG(-1.00)[-0.999,0]; ASN(0.00)[asn:6939, ipnet:2001:470::/32, country:US] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 07 Dec 2018 17:21:39 -0000 On 12/7/18 7:17 AM, Konstantin Belousov wrote: > Author: kib > Date: Fri Dec 7 15:17:29 2018 > New Revision: 341689 > URL: https://svnweb.freebsd.org/changeset/base/341689 > > Log: > Add new file handle system calls. > > Namely, getfhat(2), fhlink(2), fhlinkat(2), fhreadlink(2). The > syscalls are provided for a NFS userspace server (nfs-ganesha). > > Submitted by: Jack Halford > Sponsored by: Gandi.net > Tested by: pho > Feedback from: brooks, markj > MFC after: 1 week > Differential revision: https://reviews.freebsd.org/D18359 Can this be used to implement 'flink' (create a link to an open file descriptor)? Hmm, it appears so. It is limited to PRIV_VFS_GETFH at least. The getfh(2) manpage notes this explicitly, but the new manpages don't appear to. Even with the PRIV check, I'm still somewhat nervous about what flink means for processes running as root that are using Capsicum. Maybe it's ok, but I didn't see any discussion of this in the review. -- John Baldwin