From owner-svn-src-head@freebsd.org Mon Jul 23 20:36:26 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 63B82105438B; Mon, 23 Jul 2018 20:36:26 +0000 (UTC) (envelope-from imp@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 19F0B8D36C; Mon, 23 Jul 2018 20:36:26 +0000 (UTC) (envelope-from imp@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 EBC882175D; Mon, 23 Jul 2018 20:36:25 +0000 (UTC) (envelope-from imp@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w6NKaPOR012070; Mon, 23 Jul 2018 20:36:25 GMT (envelope-from imp@FreeBSD.org) Received: (from imp@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w6NKaPs2012068; Mon, 23 Jul 2018 20:36:25 GMT (envelope-from imp@FreeBSD.org) Message-Id: <201807232036.w6NKaPs2012068@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: imp set sender to imp@FreeBSD.org using -f From: Warner Losh Date: Mon, 23 Jul 2018 20:36:25 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r336651 - in head/stand/efi: include libefi X-SVN-Group: head X-SVN-Commit-Author: imp X-SVN-Commit-Paths: in head/stand/efi: include libefi X-SVN-Commit-Revision: 336651 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.27 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: Mon, 23 Jul 2018 20:36:26 -0000 Author: imp Date: Mon Jul 23 20:36:25 2018 New Revision: 336651 URL: https://svnweb.freebsd.org/changeset/base/336651 Log: Implement efi_devpath_to_media_path Takes a generic device path as its input. Scans through it to find the first media_path node in it and returns a pointer to it. If none is found, NULL is returned. Sponsored by: Netflix Modified: head/stand/efi/include/efilib.h head/stand/efi/libefi/devpath.c Modified: head/stand/efi/include/efilib.h ============================================================================== --- head/stand/efi/include/efilib.h Mon Jul 23 19:49:54 2018 (r336650) +++ head/stand/efi/include/efilib.h Mon Jul 23 20:36:25 2018 (r336651) @@ -88,6 +88,7 @@ bool efi_devpath_match(EFI_DEVICE_PATH *, EFI_DEVICE_P bool efi_devpath_is_prefix(EFI_DEVICE_PATH *, EFI_DEVICE_PATH *); CHAR16 *efi_devpath_name(EFI_DEVICE_PATH *); void efi_free_devpath_name(CHAR16 *); +EFI_DEVICE_PATH *efi_devpath_to_media_path(EFI_DEVICE_PATH *); int efi_status_to_errno(EFI_STATUS); EFI_STATUS errno_to_efi_status(int errno); Modified: head/stand/efi/libefi/devpath.c ============================================================================== --- head/stand/efi/libefi/devpath.c Mon Jul 23 19:49:54 2018 (r336650) +++ head/stand/efi/libefi/devpath.c Mon Jul 23 20:36:25 2018 (r336651) @@ -195,3 +195,19 @@ efi_devpath_is_prefix(EFI_DEVICE_PATH *prefix, EFI_DEV } return (true); } + +/* + * Skip over the 'prefix' part of path and return the part of the path + * that starts with the first node that's a MEDIA_DEVICE_PATH. + */ +EFI_DEVICE_PATH * +efi_devpath_to_media_path(EFI_DEVICE_PATH *path) +{ + + while (!IsDevicePathEnd(path)) { + if (DevicePathType(path) == MEDIA_DEVICE_PATH) + return (path); + path = NextDevicePathNode(path); + } + return (NULL); +}