From owner-svn-src-head@freebsd.org Fri Jun 21 23:40:27 2019 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 6914115C3D0A; Fri, 21 Jun 2019 23:40:27 +0000 (UTC) (envelope-from scottl@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 101B487785; Fri, 21 Jun 2019 23:40:27 +0000 (UTC) (envelope-from scottl@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 D88F82379; Fri, 21 Jun 2019 23:40:26 +0000 (UTC) (envelope-from scottl@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x5LNeQlL079723; Fri, 21 Jun 2019 23:40:26 GMT (envelope-from scottl@FreeBSD.org) Received: (from scottl@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x5LNeQ7E079722; Fri, 21 Jun 2019 23:40:26 GMT (envelope-from scottl@FreeBSD.org) Message-Id: <201906212340.x5LNeQ7E079722@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: scottl set sender to scottl@FreeBSD.org using -f From: Scott Long Date: Fri, 21 Jun 2019 23:40:26 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r349283 - head/sys/cam X-SVN-Group: head X-SVN-Commit-Author: scottl X-SVN-Commit-Paths: head/sys/cam X-SVN-Commit-Revision: 349283 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 101B487785 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.95)[-0.951,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] 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: Fri, 21 Jun 2019 23:40:27 -0000 Author: scottl Date: Fri Jun 21 23:40:26 2019 New Revision: 349283 URL: https://svnweb.freebsd.org/changeset/base/349283 Log: Refactor xpt_getattr() to make it more readable. No outwardly visible functional changes, though code flow was modified a bit internally to lessen the need for goto jumps and chained if conditionals. Modified: head/sys/cam/cam_xpt.c Modified: head/sys/cam/cam_xpt.c ============================================================================== --- head/sys/cam/cam_xpt.c Fri Jun 21 23:29:29 2019 (r349282) +++ head/sys/cam/cam_xpt.c Fri Jun 21 23:40:26 2019 (r349283) @@ -1244,6 +1244,7 @@ xpt_getattr(char *buf, size_t len, const char *attr, s { int ret = -1, l, o; struct ccb_dev_advinfo cdai; + struct scsi_vpd_device_id *did; struct scsi_vpd_id_descriptor *idd; xpt_path_assert(path, MA_OWNED); @@ -1276,31 +1277,36 @@ xpt_getattr(char *buf, size_t len, const char *attr, s cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE); if (cdai.provsiz == 0) goto out; - if (cdai.buftype == CDAI_TYPE_SCSI_DEVID) { + switch(cdai.buftype) { + case CDAI_TYPE_SCSI_DEVID: + did = (struct scsi_vpd_device_id *)cdai.buf; if (strcmp(attr, "GEOM::lunid") == 0) { - idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf, - cdai.provsiz, scsi_devid_is_lun_naa); + idd = scsi_get_devid(did, cdai.provsiz, + scsi_devid_is_lun_naa); if (idd == NULL) - idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf, - cdai.provsiz, scsi_devid_is_lun_eui64); + idd = scsi_get_devid(did, cdai.provsiz, + scsi_devid_is_lun_eui64); if (idd == NULL) - idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf, - cdai.provsiz, scsi_devid_is_lun_uuid); + idd = scsi_get_devid(did, cdai.provsiz, + scsi_devid_is_lun_uuid); if (idd == NULL) - idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf, - cdai.provsiz, scsi_devid_is_lun_md5); + idd = scsi_get_devid(did, cdai.provsiz, + scsi_devid_is_lun_md5); } else idd = NULL; + if (idd == NULL) - idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf, - cdai.provsiz, scsi_devid_is_lun_t10); + idd = scsi_get_devid(did, cdai.provsiz, + scsi_devid_is_lun_t10); if (idd == NULL) - idd = scsi_get_devid((struct scsi_vpd_device_id *)cdai.buf, - cdai.provsiz, scsi_devid_is_lun_name); + idd = scsi_get_devid(did, cdai.provsiz, + scsi_devid_is_lun_name); if (idd == NULL) - goto out; + break; + ret = 0; - if ((idd->proto_codeset & SVPD_ID_CODESET_MASK) == SVPD_ID_CODESET_ASCII) { + if ((idd->proto_codeset & SVPD_ID_CODESET_MASK) == + SVPD_ID_CODESET_ASCII) { if (idd->length < len) { for (l = 0; l < idd->length; l++) buf[l] = idd->identifier[l] ? @@ -1308,38 +1314,46 @@ xpt_getattr(char *buf, size_t len, const char *attr, s buf[l] = 0; } else ret = EFAULT; - } else if ((idd->proto_codeset & SVPD_ID_CODESET_MASK) == SVPD_ID_CODESET_UTF8) { + break; + } + if ((idd->proto_codeset & SVPD_ID_CODESET_MASK) == + SVPD_ID_CODESET_UTF8) { l = strnlen(idd->identifier, idd->length); if (l < len) { bcopy(idd->identifier, buf, l); buf[l] = 0; } else ret = EFAULT; - } else if ((idd->id_type & SVPD_ID_TYPE_MASK) == SVPD_ID_TYPE_UUID - && idd->identifier[0] == 0x10) { - if ((idd->length - 2) * 2 + 4 < len) { - for (l = 2, o = 0; l < idd->length; l++) { - if (l == 6 || l == 8 || l == 10 || l == 12) - o += sprintf(buf + o, "-"); - o += sprintf(buf + o, "%02x", - idd->identifier[l]); - } - } else + break; + } + if ((idd->id_type & SVPD_ID_TYPE_MASK) == + SVPD_ID_TYPE_UUID && idd->identifier[0] == 0x10) { + if ((idd->length - 2) * 2 + 4 >= len) { ret = EFAULT; - } else { - if (idd->length * 2 < len) { - for (l = 0; l < idd->length; l++) - sprintf(buf + l * 2, "%02x", - idd->identifier[l]); - } else - ret = EFAULT; + break; + } + for (l = 2, o = 0; l < idd->length; l++) { + if (l == 6 || l == 8 || l == 10 || l == 12) + o += sprintf(buf + o, "-"); + o += sprintf(buf + o, "%02x", + idd->identifier[l]); + } + break; } - } else { + if (idd->length * 2 < len) { + for (l = 0; l < idd->length; l++) + sprintf(buf + l * 2, "%02x", + idd->identifier[l]); + } else + ret = EFAULT; + break; + default: if (cdai.provsiz < len) { cdai.buf[cdai.provsiz] = 0; ret = 0; } else ret = EFAULT; + break; } out: