2 * Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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37 RCSID("$Id: com_err.c,v 1.18 2002/03/10 23:07:01 assar Exp $");
44 struct et_list *_et_list = NULL;
48 error_message (long code)
51 const char *p = com_right(_et_list, code);
54 sprintf(msg, "Unknown error %ld", code);
58 if (p != NULL && *p != '\0') {
59 strncpy(msg, p, sizeof(msg) - 1);
60 msg[sizeof(msg) - 1] = 0;
62 sprintf(msg, "Unknown error %ld", code);
67 init_error_table(const char **msgs, long base, int count)
69 initialize_error_table_r(&_et_list, msgs, count, base);
74 default_proc (const char *whoami, long code, const char *fmt, va_list args)
75 __attribute__((__format__(__printf__, 3, 0)));
78 default_proc (const char *whoami, long code, const char *fmt, va_list args)
81 fprintf(stderr, "%s: ", whoami);
83 fprintf(stderr, "%s ", error_message(code));
85 vfprintf(stderr, fmt, args);
86 fprintf(stderr, "\r\n"); /* ??? */
89 static errf com_err_hook = default_proc;
92 com_err_va (const char *whoami,
97 (*com_err_hook) (whoami, code, fmt, args);
101 com_err (const char *whoami,
108 com_err_va (whoami, code, fmt, ap);
113 set_com_err_hook (errf new)
115 errf old = com_err_hook;
120 com_err_hook = default_proc;
126 reset_com_err_hook (void)
128 return set_com_err_hook(NULL);
131 #define ERRCODE_RANGE 8 /* # of bits to shift table number */
132 #define BITS_PER_CHAR 6 /* # bits to shift per character in name */
134 static const char char_set[] =
135 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
140 error_table_name(int num)
146 /* num = aa aaa abb bbb bcc ccc cdd ddd d?? ??? ??? */
148 num >>= ERRCODE_RANGE;
149 /* num = ?? ??? ??? aaa aaa bbb bbb ccc ccc ddd ddd */
151 /* num = 00 000 000 aaa aaa bbb bbb ccc ccc ddd ddd */
152 for (i = 4; i >= 0; i--) {
153 ch = (num >> BITS_PER_CHAR * i) & ((1 << BITS_PER_CHAR) - 1);
155 *p++ = char_set[ch-1];
162 add_to_error_table(struct et_list *new_table)
166 for (et = _et_list; et; et = et->next) {
167 if (et->table->base == new_table->table->base)
171 new_table->next = _et_list;
172 _et_list = new_table;