From owner-svn-src-all@freebsd.org Fri Dec 13 04:12:13 2019 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id CF8BB1E1BE8; Fri, 13 Dec 2019 04:12:13 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 47Yy19590nz4T8n; Fri, 13 Dec 2019 04:12:13 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id AC89169AF; Fri, 13 Dec 2019 04:12:13 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id xBD4CDFT017851; Fri, 13 Dec 2019 04:12:13 GMT (envelope-from cem@FreeBSD.org) Received: (from cem@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id xBD4CDZm017850; Fri, 13 Dec 2019 04:12:13 GMT (envelope-from cem@FreeBSD.org) Message-Id: <201912130412.xBD4CDZm017850@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: cem set sender to cem@FreeBSD.org using -f From: Conrad Meyer Date: Fri, 13 Dec 2019 04:12:13 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r355692 - head/sbin/fsirand X-SVN-Group: head X-SVN-Commit-Author: cem X-SVN-Commit-Paths: head/sbin/fsirand X-SVN-Commit-Revision: 355692 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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, 13 Dec 2019 04:12:13 -0000 Author: cem Date: Fri Dec 13 04:12:13 2019 New Revision: 355692 URL: https://svnweb.freebsd.org/changeset/base/355692 Log: fsirand(8): Just use arc4random(3) Remove single use of dubious srandomdev(3) + random(3) and replace with arc4random(3), as is used already in this program. Follow-up question: Do we really need this program anymore? In base? Modified: head/sbin/fsirand/fsirand.c Modified: head/sbin/fsirand/fsirand.c ============================================================================== --- head/sbin/fsirand/fsirand.c Fri Dec 13 04:03:05 2019 (r355691) +++ head/sbin/fsirand/fsirand.c Fri Dec 13 04:12:13 2019 (r355692) @@ -83,8 +83,6 @@ main(int argc, char *argv[]) if (argc - optind < 1) usage(); - srandomdev(); - /* Increase our data size to the max */ if (getrlimit(RLIMIT_DATA, &rl) == 0) { rl.rlim_cur = rl.rlim_max; @@ -167,7 +165,7 @@ fsirand(char *device) if (!printonly) { /* Randomize fs_id and write out new sblock and backups */ sblock->fs_id[0] = (u_int32_t)time(NULL); - sblock->fs_id[1] = random(); + sblock->fs_id[1] = arc4random(); if (sbput(devfd, sblock, sblock->fs_ncg) != 0) { warn("could not write updated superblock"); return (1);