107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
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/* @(#)scsiopts.c 1.1 16/01/21 Copyright 2016 J. Schilling */
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#include <schily/mconfig.h>
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#ifndef lint
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static UConst char sccsid[] =
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"@(#)scsiopts.c 1.1 16/01/21 Copyright 2016 J. Schilling";
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#endif
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/*
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* SCSI option parser
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*
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* Copyright (c) 2016 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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* A copy of the CDDL is also available via the Internet at
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* http://www.opensource.org/licenses/cddl1.txt
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*
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* The following exceptions apply:
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* CDDL <EFBFBD>3.6 needs to be replaced by: "You may create a Larger Work by
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* combining Covered Software with other code if all other code is governed by
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* the terms of a license that is OSI approved (see www.opensource.org) and
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* you may distribute the Larger Work as a single product. In such a case,
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* You must make sure the requirements of this License are fulfilled for
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* the Covered Software."
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#include <schily/stdio.h>
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#include <schily/standard.h>
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#include <schily/stdlib.h>
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#include <schily/unistd.h>
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#include <schily/fcntl.h>
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#include <schily/errno.h>
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#include <schily/string.h>
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#include <schily/time.h>
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#include <schily/utypes.h>
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#include <schily/btorder.h>
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#include <schily/schily.h>
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#include <scg/scsitransp.h>
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EXPORT int scg_opts __PR((SCSI *scgp, const char *optstr));
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LOCAL void scg_optusage __PR((void));
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EXPORT int
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scg_opts(scgp, optstr)
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SCSI *scgp;
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const char *optstr;
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{
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char *ep;
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char *np;
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int optlen;
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int flags;
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BOOL not = FALSE;
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flags = scgp->flags & SCGF_USER_FLAGS;
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while (*optstr) {
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if ((ep = strchr(optstr, ',')) != NULL) {
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optlen = ep - optstr;
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np = ep + 1;
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} else {
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optlen = strlen(optstr);
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np = (char *)optstr + optlen;
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}
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if (optstr[0] == '!') {
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optstr++;
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optlen--;
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not = TRUE;
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}
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if (strncmp(optstr, "not", optlen) == 0 ||
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strncmp(optstr, "!", optlen) == 0) {
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not = TRUE;
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} else if (strncmp(optstr, "ignore-resid", optlen) == 0) {
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flags |= SCGF_IGN_RESID;
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} else if (strncmp(optstr, "disable", optlen) == 0) {
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flags = 0;
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} else if (strncmp(optstr, "help", optlen) == 0) {
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scg_optusage();
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return (0);
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} else {
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errmsgno(EX_BAD, "Unknown option '%s'.\n", optstr);
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scg_optusage();
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return (-1);
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}
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optstr = np;
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}
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if (not)
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flags = (~flags) & SCGF_USER_FLAGS;
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scgp->flags |= flags;
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return (1);
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}
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LOCAL void
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scg_optusage()
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{
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error("scg options:\n");
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error("help print this help\n");
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error("ignore-resid ignore DMA residual count (needed for broken kernel drivers)\n");
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}
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