From owner-freebsd-hackers@FreeBSD.ORG Fri Sep 7 16:40:04 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 0EB11106566B; Fri, 7 Sep 2012 16:40:04 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id 787978FC17; Fri, 7 Sep 2012 16:40:03 +0000 (UTC) Received: from skuns.kiev.zoral.com.ua (localhost [127.0.0.1]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id q87Ge2V1020223; Fri, 7 Sep 2012 19:40:02 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5) with ESMTP id q87GdoWB071631; Fri, 7 Sep 2012 19:39:50 +0300 (EEST) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.5/8.14.5/Submit) id q87GdooZ071630; Fri, 7 Sep 2012 19:39:50 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Fri, 7 Sep 2012 19:39:50 +0300 From: Konstantin Belousov To: John Baldwin Message-ID: <20120907163950.GA33100@deviant.kiev.zoral.com.ua> References: <201209071033.52864.jhb@freebsd.org> <20120907155936.GY33100@deviant.kiev.zoral.com.ua> <201209071223.54931.jhb@freebsd.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="tZWhWDbreVb/2R9E" Content-Disposition: inline In-Reply-To: <201209071223.54931.jhb@freebsd.org> User-Agent: Mutt/1.4.2.3i X-Virus-Scanned: clamav-milter 0.95.2 at skuns.kiev.zoral.com.ua X-Virus-Status: Clean X-Spam-Status: No, score=-4.0 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: Sam Varshavchik , freebsd-hackers@freebsd.org Subject: Re: What happened to my /proc/curproc/file? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 07 Sep 2012 16:40:04 -0000 --tZWhWDbreVb/2R9E Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Sep 07, 2012 at 12:23:54PM -0400, John Baldwin wrote: > On Friday, September 07, 2012 11:59:36 am Konstantin Belousov wrote: > > On Fri, Sep 07, 2012 at 10:33:52AM -0400, John Baldwin wrote: > > > On Tuesday, September 04, 2012 7:46:23 pm Sam Varshavchik wrote: > > > > Is the dev+ino of what was exec()ed known, for another process? I m= ight be =20 > > > > able to get the client voluntarily submit its argv[0], then indepen= dently =20 > > > > have the server validate it by stat()ing that, and comparing the re= sult =20 > > > > against what the kernel says the process's inode is. > > >=20 > > > It's known in the kernel certainly. I don't think we currently have = any way > > > of exporting that info to userland however. > >=20 > > It is, as KF_FD_TYPE_TEXT by sysctl kern.proc.filedesc. >=20 > That doesn't include stat info though IIRC. You can get a pathname that = is > the same you would get from /proc/curproc/file (so it may fail and be emp= ty), > but you don't get st_dev or st_ino. >=20 > I have thought that it might be useful for kinfo_file to include a full > 'struct stat' and use the fo_stat() method of each file to fill it in, but > that is not present currently. ino is in kf_file_fileid, and rdev in kf_file_rdev. Also there is fsid in kf_file_fsid. --tZWhWDbreVb/2R9E Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (FreeBSD) iEYEARECAAYFAlBKI1UACgkQC3+MBN1Mb4gVYwCg85GSN+HVDaCjdL+tBXtz6asT 0MYAoOaPV25M2OJg85GZ166GygWqNT0+ =7yrR -----END PGP SIGNATURE----- --tZWhWDbreVb/2R9E--