1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 1992-1996,2003 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate /* 34*0Sstevel@tonic-gate * This file contains getoptstr(), which is getopt() for strings of arguments 35*0Sstevel@tonic-gate * (not arrays of strings). It is used by the bootloader ({*fs,inet}boot) and 36*0Sstevel@tonic-gate * the kernel to process argument strings. 37*0Sstevel@tonic-gate */ 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #include "getoptstr.h" 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate /* 44*0Sstevel@tonic-gate * This routine needs to be supplied by whatever uses this file. 45*0Sstevel@tonic-gate */ 46*0Sstevel@tonic-gate char *strchr(const char *s, int c); 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate 49*0Sstevel@tonic-gate #define NULL ((void *)0) 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate #define ISNTWORDCH(c) ((c) == '\0' || ISSPACE(c)) 52*0Sstevel@tonic-gate 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate /* 55*0Sstevel@tonic-gate * Prepare a gos_params structure for use by getoptstr(). 56*0Sstevel@tonic-gate */ 57*0Sstevel@tonic-gate void 58*0Sstevel@tonic-gate getoptstr_init(struct gos_params *params) 59*0Sstevel@tonic-gate { 60*0Sstevel@tonic-gate params->gos_pos = 1; 61*0Sstevel@tonic-gate } 62*0Sstevel@tonic-gate 63*0Sstevel@tonic-gate /* 64*0Sstevel@tonic-gate * Modeled after lib/libc/port/gen/getopt.c. 65*0Sstevel@tonic-gate * 66*0Sstevel@tonic-gate * With params->gos_opts set to a string of options and params->gos_strp set to 67*0Sstevel@tonic-gate * an argument string, getoptstr returns 68*0Sstevel@tonic-gate * * the next option letter, where the options are given by the 69*0Sstevel@tonic-gate * params->gos_opts string. If the option is followed by a ':' in gos_opts, 70*0Sstevel@tonic-gate * then params->gos_optargp will point to the beginning of the argument in 71*0Sstevel@tonic-gate * the string, and params->gos_optarglen will contain its length. 72*0Sstevel@tonic-gate * * -1 if "--" or a non-option argument is encountered. In the former 73*0Sstevel@tonic-gate * case, params->gos_strp is advanced to the next argument. 74*0Sstevel@tonic-gate * * '?' if an illegal option is encountered or if an argument is not 75*0Sstevel@tonic-gate * supplied for an option which requires one and ':' is not the first 76*0Sstevel@tonic-gate * character of opts. In both cases, the option letter is available in 77*0Sstevel@tonic-gate * params->gos_last_opt, and in the former case, params->gos_errp will 78*0Sstevel@tonic-gate * point to the offending character. 79*0Sstevel@tonic-gate * * ':' if an argument is not supplied for an option which requires one and 80*0Sstevel@tonic-gate * ':' is the first character of params->gos_opts. 81*0Sstevel@tonic-gate */ 82*0Sstevel@tonic-gate int 83*0Sstevel@tonic-gate getoptstr(struct gos_params *params) 84*0Sstevel@tonic-gate { 85*0Sstevel@tonic-gate char c; 86*0Sstevel@tonic-gate char *cp; 87*0Sstevel@tonic-gate 88*0Sstevel@tonic-gate /* 89*0Sstevel@tonic-gate * const because we should update params. Just make sure you don't 90*0Sstevel@tonic-gate * use this after you update params->gos_strp. 91*0Sstevel@tonic-gate */ 92*0Sstevel@tonic-gate const char * const strp = params->gos_strp; 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate 95*0Sstevel@tonic-gate if (params->gos_opts == NULL || strp == NULL) 96*0Sstevel@tonic-gate return (-1); 97*0Sstevel@tonic-gate 98*0Sstevel@tonic-gate if (params->gos_pos == 1) { 99*0Sstevel@tonic-gate /* At beginning of new word. */ 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate if (strp[0] == '\0' || strp[0] != '-') 102*0Sstevel@tonic-gate return (-1); 103*0Sstevel@tonic-gate if (ISNTWORDCH(strp[1])) { 104*0Sstevel@tonic-gate /* Lone dash. */ 105*0Sstevel@tonic-gate return (-1); 106*0Sstevel@tonic-gate } 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate /* Check for "--" */ 109*0Sstevel@tonic-gate if (strp[1] == '-' && ISNTWORDCH(strp[2])) { 110*0Sstevel@tonic-gate params->gos_strp = &strp[2]; 111*0Sstevel@tonic-gate SKIP_SPC(params->gos_strp); 112*0Sstevel@tonic-gate return (-1); 113*0Sstevel@tonic-gate } 114*0Sstevel@tonic-gate } 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate params->gos_last_opt = c = strp[params->gos_pos]; 117*0Sstevel@tonic-gate if (c == ':' || (cp = strchr(params->gos_opts, c)) == NULL) { 118*0Sstevel@tonic-gate /* Unrecognized option error. */ 119*0Sstevel@tonic-gate params->gos_errp = &strp[params->gos_pos]; 120*0Sstevel@tonic-gate ++params->gos_pos; 121*0Sstevel@tonic-gate if (ISNTWORDCH(strp[params->gos_pos])) { 122*0Sstevel@tonic-gate params->gos_strp = &strp[params->gos_pos]; 123*0Sstevel@tonic-gate SKIP_SPC(params->gos_strp); 124*0Sstevel@tonic-gate params->gos_pos = 1; 125*0Sstevel@tonic-gate } 126*0Sstevel@tonic-gate return ('?'); 127*0Sstevel@tonic-gate } 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate if (cp[1] == ':') { 130*0Sstevel@tonic-gate /* This option expects an argument. */ 131*0Sstevel@tonic-gate 132*0Sstevel@tonic-gate params->gos_strp = &strp[params->gos_pos + 1]; 133*0Sstevel@tonic-gate 134*0Sstevel@tonic-gate if (ISNTWORDCH(*params->gos_strp)) { 135*0Sstevel@tonic-gate /* The argument is in the next word. */ 136*0Sstevel@tonic-gate SKIP_SPC(params->gos_strp); 137*0Sstevel@tonic-gate 138*0Sstevel@tonic-gate if (*params->gos_strp == '\0') { 139*0Sstevel@tonic-gate /* Not. Missing argument. */ 140*0Sstevel@tonic-gate params->gos_pos = 1; 141*0Sstevel@tonic-gate params->gos_optargp = NULL; 142*0Sstevel@tonic-gate return (params->gos_opts[0] == ':' ? ':' : '?'); 143*0Sstevel@tonic-gate } 144*0Sstevel@tonic-gate } 145*0Sstevel@tonic-gate 146*0Sstevel@tonic-gate params->gos_optargp = params->gos_strp; 147*0Sstevel@tonic-gate 148*0Sstevel@tonic-gate /* Advance to the next word. */ 149*0Sstevel@tonic-gate SKIP_WORD(params->gos_strp); 150*0Sstevel@tonic-gate params->gos_optarglen = params->gos_strp - params->gos_optargp; 151*0Sstevel@tonic-gate SKIP_SPC(params->gos_strp); 152*0Sstevel@tonic-gate 153*0Sstevel@tonic-gate params->gos_pos = 1; 154*0Sstevel@tonic-gate } else { 155*0Sstevel@tonic-gate ++params->gos_pos; 156*0Sstevel@tonic-gate if (ISNTWORDCH(strp[params->gos_pos])) { 157*0Sstevel@tonic-gate params->gos_strp = &strp[params->gos_pos]; 158*0Sstevel@tonic-gate SKIP_SPC(params->gos_strp); 159*0Sstevel@tonic-gate params->gos_pos = 1; 160*0Sstevel@tonic-gate } 161*0Sstevel@tonic-gate params->gos_optargp = NULL; 162*0Sstevel@tonic-gate } 163*0Sstevel@tonic-gate return (c); 164*0Sstevel@tonic-gate } 165