150764Smarkm/* 2127807Snectar * Copyright (c) 1997 - 2002 Kungliga Tekniska H�gskolan 350764Smarkm * (Royal Institute of Technology, Stockholm, Sweden). 450764Smarkm * All rights reserved. 550764Smarkm * 650764Smarkm * Redistribution and use in source and binary forms, with or without 750764Smarkm * modification, are permitted provided that the following conditions 850764Smarkm * are met: 950764Smarkm * 1050764Smarkm * 1. Redistributions of source code must retain the above copyright 1150764Smarkm * notice, this list of conditions and the following disclaimer. 1250764Smarkm * 1350764Smarkm * 2. Redistributions in binary form must reproduce the above copyright 1450764Smarkm * notice, this list of conditions and the following disclaimer in the 1550764Smarkm * documentation and/or other materials provided with the distribution. 1650764Smarkm * 17127807Snectar * 3. Neither the name of the Institute nor the names of its contributors 1850764Smarkm * may be used to endorse or promote products derived from this software 1950764Smarkm * without specific prior written permission. 2050764Smarkm * 2150764Smarkm * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 2250764Smarkm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2350764Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2450764Smarkm * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 2550764Smarkm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2650764Smarkm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2750764Smarkm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2850764Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2950764Smarkm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3050764Smarkm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3150764Smarkm * SUCH DAMAGE. 3250764Smarkm */ 33127807Snectar/* $FreeBSD$ */ 3450764Smarkm 3550764Smarkm#ifdef HAVE_CONFIG_H 3650764Smarkm#include <config.h> 37178846SdfrRCSID("$Id: com_err.c 14930 2005-04-24 19:43:06Z lha $"); 3850764Smarkm#endif 3950764Smarkm#include <stdio.h> 4050764Smarkm#include <stdlib.h> 4150764Smarkm#include <string.h> 4250764Smarkm#include "com_err.h" 4350764Smarkm 44127807Snectarstruct et_list *_et_list = NULL; 4550764Smarkm 4650764Smarkm 4750764Smarkmconst char * 4850764Smarkmerror_message (long code) 4950764Smarkm{ 5050764Smarkm static char msg[128]; 5150764Smarkm const char *p = com_right(_et_list, code); 52127807Snectar if (p == NULL) { 53127807Snectar if (code < 0) 54178846Sdfr snprintf(msg, sizeof(msg), "Unknown error %ld", code); 55127807Snectar else 56127807Snectar p = strerror(code); 57127807Snectar } 5850764Smarkm if (p != NULL && *p != '\0') { 59178846Sdfr strlcpy(msg, p, sizeof(msg)); 6050764Smarkm } else 61178846Sdfr snprintf(msg, sizeof(msg), "Unknown error %ld", code); 6250764Smarkm return msg; 6350764Smarkm} 6450764Smarkm 6550764Smarkmint 6650764Smarkminit_error_table(const char **msgs, long base, int count) 6750764Smarkm{ 6850764Smarkm initialize_error_table_r(&_et_list, msgs, count, base); 6950764Smarkm return 0; 7050764Smarkm} 7150764Smarkm 7250764Smarkmstatic void 7350764Smarkmdefault_proc (const char *whoami, long code, const char *fmt, va_list args) 74127807Snectar __attribute__((__format__(__printf__, 3, 0))); 75127807Snectar 76127807Snectarstatic void 77127807Snectardefault_proc (const char *whoami, long code, const char *fmt, va_list args) 7850764Smarkm{ 7950764Smarkm if (whoami) 8050764Smarkm fprintf(stderr, "%s: ", whoami); 8150764Smarkm if (code) 8250764Smarkm fprintf(stderr, "%s ", error_message(code)); 8350764Smarkm if (fmt) 8450764Smarkm vfprintf(stderr, fmt, args); 8550764Smarkm fprintf(stderr, "\r\n"); /* ??? */ 8650764Smarkm} 8750764Smarkm 8850764Smarkmstatic errf com_err_hook = default_proc; 8950764Smarkm 9050764Smarkmvoid 9150764Smarkmcom_err_va (const char *whoami, 9250764Smarkm long code, 9350764Smarkm const char *fmt, 9450764Smarkm va_list args) 9550764Smarkm{ 9650764Smarkm (*com_err_hook) (whoami, code, fmt, args); 9750764Smarkm} 9850764Smarkm 9950764Smarkmvoid 10050764Smarkmcom_err (const char *whoami, 10150764Smarkm long code, 10250764Smarkm const char *fmt, 10350764Smarkm ...) 10450764Smarkm{ 10550764Smarkm va_list ap; 10650764Smarkm va_start(ap, fmt); 10750764Smarkm com_err_va (whoami, code, fmt, ap); 10850764Smarkm va_end(ap); 10950764Smarkm} 11050764Smarkm 11150764Smarkmerrf 11250764Smarkmset_com_err_hook (errf new) 11350764Smarkm{ 11450764Smarkm errf old = com_err_hook; 11550764Smarkm 11650764Smarkm if (new) 11750764Smarkm com_err_hook = new; 11850764Smarkm else 11950764Smarkm com_err_hook = default_proc; 12050764Smarkm 12150764Smarkm return old; 12250764Smarkm} 12350764Smarkm 12450764Smarkmerrf 12550764Smarkmreset_com_err_hook (void) 12650764Smarkm{ 12750764Smarkm return set_com_err_hook(NULL); 12850764Smarkm} 12950764Smarkm 13050764Smarkm#define ERRCODE_RANGE 8 /* # of bits to shift table number */ 13150764Smarkm#define BITS_PER_CHAR 6 /* # bits to shift per character in name */ 13250764Smarkm 13350764Smarkmstatic const char char_set[] = 13450764Smarkm "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_"; 13550764Smarkm 13650764Smarkmstatic char buf[6]; 13750764Smarkm 13850764Smarkmconst char * 13950764Smarkmerror_table_name(int num) 14050764Smarkm{ 14150764Smarkm int ch; 14250764Smarkm int i; 14350764Smarkm char *p; 14450764Smarkm 14550764Smarkm /* num = aa aaa abb bbb bcc ccc cdd ddd d?? ??? ??? */ 14650764Smarkm p = buf; 14750764Smarkm num >>= ERRCODE_RANGE; 14850764Smarkm /* num = ?? ??? ??? aaa aaa bbb bbb ccc ccc ddd ddd */ 14950764Smarkm num &= 077777777; 15050764Smarkm /* num = 00 000 000 aaa aaa bbb bbb ccc ccc ddd ddd */ 15150764Smarkm for (i = 4; i >= 0; i--) { 15250764Smarkm ch = (num >> BITS_PER_CHAR * i) & ((1 << BITS_PER_CHAR) - 1); 15350764Smarkm if (ch != 0) 15450764Smarkm *p++ = char_set[ch-1]; 15550764Smarkm } 15650764Smarkm *p = '\0'; 15750764Smarkm return(buf); 15850764Smarkm} 159127807Snectar 160127807Snectarvoid 161127807Snectaradd_to_error_table(struct et_list *new_table) 162127807Snectar{ 163127807Snectar struct et_list *et; 164127807Snectar 165127807Snectar for (et = _et_list; et; et = et->next) { 166127807Snectar if (et->table->base == new_table->table->base) 167127807Snectar return; 168127807Snectar } 169127807Snectar 170127807Snectar new_table->next = _et_list; 171127807Snectar _et_list = new_table; 172127807Snectar} 173