1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <stdio.h> 29 #include <strings.h> 30 #include <sys/machelf.h> 31 #include "_conv.h" 32 #include "globals_msg.h" 33 34 35 /* 36 * Given an integer value, generate an ASCII representation of it. 37 * 38 * entry: 39 * string - Buffer into which the resulting string is generated. 40 * size - Size of string buffer (i.e. sizeof(string)) 41 * value - Value to be formatted. 42 * fmt_flags - CONV_FMT_* values, used to specify formatting details. 43 * 44 * exit: 45 * The formatted string, or as much as will fit, is placed into 46 * string. String is returned. 47 */ 48 const char * 49 conv_invalid_val(char *string, size_t size, Xword value, int fmt_flags) 50 { 51 const char *fmt; 52 53 if (fmt_flags & CONV_FMT_DECIMAL) { 54 if (fmt_flags & CONV_FMT_SPACE) 55 fmt = MSG_ORIG(MSG_GBL_FMT_DECS); 56 else 57 fmt = MSG_ORIG(MSG_GBL_FMT_DEC); 58 } else { 59 if (fmt_flags & CONV_FMT_SPACE) 60 fmt = MSG_ORIG(MSG_GBL_FMT_HEXS); 61 else 62 fmt = MSG_ORIG(MSG_GBL_FMT_HEX); 63 } 64 (void) snprintf(string, size, fmt, value); 65 return ((const char *)string); 66 } 67 68 69 70 /* 71 * cef_cp() is used by conv_expn_field() to fill in the output buffer. 72 * A CONV_EXPN_FIELD_STATE variable is used to maintain the buffer state 73 * as the operation progresses. 74 * 75 * entry: 76 * arg - As passed to conv_expn_field(). 77 * state - Variable used to maintain buffer state between calls. 78 * list_item - TRUE(1) if this is a list item, and FALSE(0) 79 * if it is something else. 80 * str - String to be added to the buffer. 81 * 82 * exit: 83 * On Success: 84 * buffer contains the output string, including a list 85 * separator if appropriate. state has been updated. 86 * TRUE(1) is returned. 87 * On Failure: 88 * Buffer contains the numeric representation for the flags, 89 * and FALSE(0) is returned. 90 */ 91 typedef struct { 92 char *cur; /* Current output position in buf */ 93 size_t room; /* # of bytes left in buf */ 94 int list_cnt; /* # of list items output into buf */ 95 const char *sep_str; /* String used as list separator */ 96 int sep_str_len; /* strlen(sep_str) */ 97 } CONV_EXPN_FIELD_STATE; 98 99 static int 100 cef_cp(CONV_EXPN_FIELD_ARG *arg, CONV_EXPN_FIELD_STATE *state, 101 int list_item, const char *str) 102 { 103 int n; 104 105 if (list_item) { /* This is a list item */ 106 /* 107 * If list is non-empty, and the buffer has room, 108 * then insert the separator. 109 */ 110 if (state->list_cnt != 0) { 111 if (state->sep_str_len < state->room) { 112 (void) memcpy(state->cur, state->sep_str, 113 state->sep_str_len); 114 state->cur += state->sep_str_len; 115 state->room -= state->sep_str_len; 116 } else { 117 /* Ensure code below will catch lack of room */ 118 state->room = 0; 119 } 120 } 121 state->list_cnt++; 122 } 123 124 n = strlen(str); 125 if (n < state->room) { 126 (void) memcpy(state->cur, str, n); 127 state->cur += n; 128 state->room -= n; 129 return (TRUE); 130 } 131 132 /* Buffer too small. Fill in the numeric value and report failure */ 133 (void) conv_invalid_val(arg->buf, arg->bufsize, arg->oflags, 0); 134 return (FALSE); 135 } 136 137 138 139 /* 140 * Provide a focal point for expanding bit-fields values into 141 * their corresponding strings. 142 * 143 * entry: 144 * arg - Specifies the operation to be carried out. See the 145 * definition of CONV_EXPN_FIELD_ARG in conv.h for details. 146 * 147 * exit: 148 * arg->buf contains the formatted result. True (1) is returned if there 149 * was no error, and False (0) if the buffer was too small. In the failure 150 * case, arg->buf contains a numeric representation of the value. 151 */ 152 int 153 conv_expn_field(CONV_EXPN_FIELD_ARG *arg) 154 { 155 const Val_desc *vde; 156 CONV_EXPN_FIELD_STATE state; 157 Xword rflags = arg->rflags; 158 const char **lead_str; 159 160 161 /* Initialize buffer state */ 162 state.cur = arg->buf; 163 state.room = arg->bufsize; 164 state.list_cnt = 0; 165 state.sep_str = arg->sep ? arg->sep : MSG_ORIG(MSG_GBL_SEP); 166 state.sep_str_len = strlen(state.sep_str); 167 168 /* Prefix string */ 169 if (!cef_cp(arg, &state, FALSE, 170 (arg->prefix ? arg->prefix : MSG_ORIG(MSG_GBL_OSQBRKT)))) 171 return (FALSE); 172 173 /* Any strings in the lead_str array go at the head of the list */ 174 lead_str = arg->lead_str; 175 if (lead_str) { 176 while (*lead_str) { 177 if (!cef_cp(arg, &state, TRUE, *lead_str++)) 178 return (FALSE); 179 } 180 } 181 182 /* 183 * Traverse the callers Val_desc array and determine if the value 184 * corresponds to any array item and add those that are to the list. 185 */ 186 for (vde = arg->vdp; vde->v_msg; vde++) { 187 if (arg->oflags & vde->v_val) { 188 if (!cef_cp(arg, &state, TRUE, vde->v_msg)) 189 return (FALSE); 190 191 /* Indicate this item has been collected */ 192 rflags &= ~(vde->v_val); 193 } 194 } 195 196 /* 197 * If any flags remain, then they are unidentified. Add the numeric 198 * representation of these flags to the users output buffer. 199 */ 200 if (rflags) { 201 char ibuf[CONV_INV_STRSIZE]; 202 203 (void) conv_invalid_val(ibuf, sizeof (ibuf), rflags, 0); 204 if (!cef_cp(arg, &state, TRUE, ibuf)) 205 return (FALSE); 206 } 207 208 /* Suffix string */ 209 if (!cef_cp(arg, &state, FALSE, 210 (arg->suffix ? arg->suffix : MSG_ORIG(MSG_GBL_CSQBRKT)))) 211 return (FALSE); 212 213 /* Terminate the buffer */ 214 *state.cur = '\0'; 215 216 return (TRUE); 217 } 218