From owner-svn-src-head@freebsd.org Sun Nov 18 01:58:49 2018 Return-Path: Delivered-To: svn-src-head@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 A52EC1121753; Sun, 18 Nov 2018 01:58:49 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 41C028C390; Sun, 18 Nov 2018 01:58:49 +0000 (UTC) (envelope-from markj@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 207774B10; Sun, 18 Nov 2018 01:58:49 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id wAI1wntS034732; Sun, 18 Nov 2018 01:58:49 GMT (envelope-from markj@FreeBSD.org) Received: (from markj@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id wAI1wmfM034730; Sun, 18 Nov 2018 01:58:48 GMT (envelope-from markj@FreeBSD.org) Message-Id: <201811180158.wAI1wmfM034730@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: markj set sender to markj@FreeBSD.org using -f From: Mark Johnston Date: Sun, 18 Nov 2018 01:58:48 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r340547 - head/sbin/dumpon X-SVN-Group: head X-SVN-Commit-Author: markj X-SVN-Commit-Paths: head/sbin/dumpon X-SVN-Commit-Revision: 340547 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 41C028C390 X-Spamd-Result: default: False [-0.14 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_SHORT(-0.14)[-0.141,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Nov 2018 01:58:49 -0000 Author: markj Date: Sun Nov 18 01:58:48 2018 New Revision: 340547 URL: https://svnweb.freebsd.org/changeset/base/340547 Log: Change dumpon(8)'s handling of -g. Rather than using a special value to denote "use the default router", treat the absence of the -g option to mean the same thing. The in-kernel netdump client will always attempt to reach the server directly before falling back to the configured gateway anyway. This change makes it cleaner to support a hostname value for -g. Reviewed by: cem MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D18025 Modified: head/sbin/dumpon/dumpon.8 head/sbin/dumpon/dumpon.c Modified: head/sbin/dumpon/dumpon.8 ============================================================================== --- head/sbin/dumpon/dumpon.8 Sun Nov 18 01:27:17 2018 (r340546) +++ head/sbin/dumpon/dumpon.8 Sun Nov 18 01:58:48 2018 (r340547) @@ -28,7 +28,7 @@ .\" From: @(#)swapon.8 8.1 (Berkeley) 6/5/93 .\" $FreeBSD$ .\" -.Dd October 26, 2018 +.Dd November 17, 2018 .Dt DUMPON 8 .Os .Sh NAME @@ -46,7 +46,7 @@ .Op Fl k Ar pubkey .Op Fl Z .Op Fl z -.Op Fl g Ar gateway | Li default +.Op Fl g Ar gateway .Fl s Ar server .Fl c Ar client .Ar iface @@ -140,21 +140,22 @@ The local IP address of the .Xr netdump 4 client. .It Fl g Ar gateway -Optional. -If not specified, it is assumed that the -.Ar server -is on the same link as the -.Ar client . -.Pp -If specified, -.Ar gateway -is the address of the first-hop router between the +The first-hop router between .Ar client -and the +and .Ar server . -The special value -.Dv Dq default -indicates that the currently configured system default route should be used. +If the +.Fl g +option is not specified and the system has a default route, the default +router is used as the +.Xr netdump 4 +gateway. +If the +.Fl g +option is not specified and the system does not have a default route, +.Ar server +is assumed to be on the same link as +.Ar client . .It Fl s Ar server The IP address of the .Xr netdumpd 8 Modified: head/sbin/dumpon/dumpon.c ============================================================================== --- head/sbin/dumpon/dumpon.c Sun Nov 18 01:27:17 2018 (r340546) +++ head/sbin/dumpon/dumpon.c Sun Nov 18 01:58:48 2018 (r340547) @@ -88,7 +88,7 @@ usage(void) fprintf(stderr, "usage: dumpon [-v] [-k ] [-Zz] \n" " dumpon [-v] [-k ] [-Zz]\n" - " [-g |default] -s -c \n" + " [-g ] -s -c \n" " dumpon [-v] off\n" " dumpon [-v] -l\n"); exit(EX_USAGE); @@ -109,8 +109,6 @@ find_gateway(const char *ifname) size_t sz; int error, i, ifindex, mib[7]; - ret = NULL; - /* First look up the interface index. */ if (getifaddrs(&ifap) != 0) err(EX_OSERR, "getifaddrs"); @@ -148,6 +146,7 @@ find_gateway(const char *ifname) free(buf); } + ret = NULL; for (next = buf; next < buf + sz; next += rtm->rtm_msglen) { rtm = (struct rt_msghdr *)(void *)next; if (rtm->rtm_version != RTM_VERSION) @@ -476,12 +475,13 @@ main(int argc, char *argv[]) if (inet_aton(client, &ndconf.ndc_client) == 0) errx(EX_USAGE, "invalid client address '%s'", client); - if (gateway == NULL) + gateway = find_gateway(argv[0]); + if (gateway == NULL) { + if (verbose) + printf("failed to look up gateway for %s\n", + server); gateway = server; - else if (strcmp(gateway, "default") == 0 && - (gateway = find_gateway(argv[0])) == NULL) - errx(EX_NOHOST, - "failed to look up next-hop router for %s", server); + } if (inet_aton(gateway, &ndconf.ndc_gateway) == 0) errx(EX_USAGE, "invalid gateway address '%s'", gateway);