1/* 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#if defined(LIBC_SCCS) && !defined(lint) 31static char sccsid[] = "@(#)strerror.c 8.1 (Berkeley) 6/4/93"; 32#endif /* LIBC_SCCS and not lint */ 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD$"); 35 36#include "namespace.h" 37#if defined(NLS) 38#include <nl_types.h> 39#endif 40#include <limits.h> 41#include <errno.h> 42#include <stdlib.h> 43#include <string.h> 44#include <signal.h> 45#include "reentrant.h" 46#include "un-namespace.h" 47 48#define UPREFIX "Unknown signal" 49 50static char sig_ebuf[NL_TEXTMAX]; 51static char sig_ebuf_err[NL_TEXTMAX]; 52static once_t sig_init_once = ONCE_INITIALIZER; 53static thread_key_t sig_key; 54static int sig_keycreated = 0; 55 56static void 57sig_keycreate(void) 58{ 59 sig_keycreated = (thr_keycreate(&sig_key, free) == 0); 60} 61 62static char * 63sig_tlsalloc(void) 64{ 65 char *ebuf = NULL; 66 67 if (thr_main() != 0) 68 ebuf = sig_ebuf; 69 else { 70 if (thr_once(&sig_init_once, sig_keycreate) != 0 || 71 !sig_keycreated) 72 goto thr_err; 73 if ((ebuf = thr_getspecific(sig_key)) == NULL) { 74 if ((ebuf = malloc(sizeof(sig_ebuf))) == NULL) 75 goto thr_err; 76 if (thr_setspecific(sig_key, ebuf) != 0) { 77 free(ebuf); 78 ebuf = NULL; 79 goto thr_err; 80 } 81 } 82 } 83thr_err: 84 if (ebuf == NULL) 85 ebuf = sig_ebuf_err; 86 return (ebuf); 87} 88 89/* XXX: negative 'num' ? (REGR) */ 90char * 91strsignal(int num) 92{ 93 char *ebuf; 94 char tmp[20]; 95 size_t n; 96 int signum; 97 char *t, *p; 98 99#if defined(NLS) 100 int saved_errno = errno; 101 nl_catd catd; 102 catd = catopen("libc", NL_CAT_LOCALE); 103#endif 104 105 ebuf = sig_tlsalloc(); 106 107 if (num > 0 && num < sys_nsig) { 108 n = strlcpy(ebuf, 109#if defined(NLS) 110 catgets(catd, 2, num, sys_siglist[num]), 111#else 112 sys_siglist[num], 113#endif 114 sizeof(sig_ebuf)); 115 } else { 116 n = strlcpy(ebuf, 117#if defined(NLS) 118 catgets(catd, 2, 0xffff, UPREFIX), 119#else 120 UPREFIX, 121#endif 122 sizeof(sig_ebuf)); 123 } 124 125 signum = num; 126 if (num < 0) 127 signum = -signum; 128 129 t = tmp; 130 do { 131 *t++ = "0123456789"[signum % 10]; 132 } while (signum /= 10); 133 if (num < 0) 134 *t++ = '-'; 135 136 p = (ebuf + n); 137 *p++ = ':'; 138 *p++ = ' '; 139 140 for (;;) { 141 *p++ = *--t; 142 if (t <= tmp) 143 break; 144 } 145 *p = '\0'; 146 147#if defined(NLS) 148 catclose(catd); 149 errno = saved_errno; 150#endif 151 return (ebuf); 152} 153