From owner-svn-src-stable-12@freebsd.org Sat Sep 12 18:40:40 2020 Return-Path: Delivered-To: svn-src-stable-12@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 3DA2D3DFD96; Sat, 12 Sep 2020 18:40:40 +0000 (UTC) (envelope-from eugen@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) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 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 4BphJm0kN5z4MX3; Sat, 12 Sep 2020 18:40:40 +0000 (UTC) (envelope-from eugen@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 D7573190EF; Sat, 12 Sep 2020 18:40:39 +0000 (UTC) (envelope-from eugen@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 08CIediS051642; Sat, 12 Sep 2020 18:40:39 GMT (envelope-from eugen@FreeBSD.org) Received: (from eugen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 08CIedei051640; Sat, 12 Sep 2020 18:40:39 GMT (envelope-from eugen@FreeBSD.org) Message-Id: <202009121840.08CIedei051640@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: eugen set sender to eugen@FreeBSD.org using -f From: Eugene Grosbein Date: Sat, 12 Sep 2020 18:40:39 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r365667 - stable/12/sys/geom/part X-SVN-Group: stable-12 X-SVN-Commit-Author: eugen X-SVN-Commit-Paths: stable/12/sys/geom/part X-SVN-Commit-Revision: 365667 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-12@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for only the 12-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Sep 2020 18:40:40 -0000 Author: eugen Date: Sat Sep 12 18:40:39 2020 New Revision: 365667 URL: https://svnweb.freebsd.org/changeset/base/365667 Log: MFC r365477: geom_part: extend kern.geom.part.check_integrity to work on GPT In short, this change allows accessing partition and recovering secondary GPT in case it is unaccessible but primary table is fine. Reported by: Alex Korchmar Modified: stable/12/sys/geom/part/g_part.c stable/12/sys/geom/part/g_part_gpt.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/geom/part/g_part.c ============================================================================== --- stable/12/sys/geom/part/g_part.c Sat Sep 12 18:23:27 2020 (r365666) +++ stable/12/sys/geom/part/g_part.c Sat Sep 12 18:40:39 2020 (r365667) @@ -135,9 +135,9 @@ struct g_part_alias_list { SYSCTL_DECL(_kern_geom); SYSCTL_NODE(_kern_geom, OID_AUTO, part, CTLFLAG_RW, 0, "GEOM_PART stuff"); -static u_int check_integrity = 1; +u_int geom_part_check_integrity = 1; SYSCTL_UINT(_kern_geom_part, OID_AUTO, check_integrity, - CTLFLAG_RWTUN, &check_integrity, 1, + CTLFLAG_RWTUN, &geom_part_check_integrity, 1, "Enable integrity checking"); static u_int auto_resize = 1; SYSCTL_UINT(_kern_geom_part, OID_AUTO, auto_resize, @@ -420,7 +420,7 @@ g_part_check_integrity(struct g_part_table *table, str if (failed != 0) { printf("GEOM_PART: integrity check failed (%s, %s)\n", pp->name, table->gpt_scheme->name); - if (check_integrity != 0) + if (geom_part_check_integrity != 0) return (EINVAL); table->gpt_corrupt = 1; } Modified: stable/12/sys/geom/part/g_part_gpt.c ============================================================================== --- stable/12/sys/geom/part/g_part_gpt.c Sat Sep 12 18:23:27 2020 (r365666) +++ stable/12/sys/geom/part/g_part_gpt.c Sat Sep 12 18:40:39 2020 (r365667) @@ -64,6 +64,8 @@ SYSCTL_UINT(_kern_geom_part_gpt, OID_AUTO, allow_nesti CTASSERT(offsetof(struct gpt_hdr, padding) == 92); CTASSERT(sizeof(struct gpt_ent) == 128); +extern u_int geom_part_check_integrity; + #define EQUUID(a,b) (memcmp(a, b, sizeof(struct uuid)) == 0) #define MBRSIZE 512 @@ -460,8 +462,9 @@ gpt_read_hdr(struct g_part_gpt_table *table, struct g_ if (hdr->hdr_lba_self != table->lba[elt]) goto fail; hdr->hdr_lba_alt = le64toh(buf->hdr_lba_alt); - if (hdr->hdr_lba_alt == hdr->hdr_lba_self || - hdr->hdr_lba_alt > last) + if (hdr->hdr_lba_alt == hdr->hdr_lba_self) + goto fail; + if (hdr->hdr_lba_alt > last && geom_part_check_integrity) goto fail; /* Check the managed area. */