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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University 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. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #if defined(LIBC_SCCS) && !defined(lint) 35 static char sccsid[] = "@(#)strerror.c 8.1 (Berkeley) 6/4/93"; 36 #endif /* LIBC_SCCS and not lint */ 37 #ifndef lint 38 static const char rcsid[] = 39 "$FreeBSD$"; 40 #endif 41 42 #include <stdio.h> 43 #include <string.h> 44 #include <signal.h> 45 46 char * 47 strsignal(num) 48 int num; 49 { 50 #define UPREFIX "Unknown signal: " 51 static char ebuf[40] = UPREFIX; /* 64-bit number + slop */ 52 register unsigned int signum; 53 register char *p, *t; 54 char tmp[40]; 55 56 signum = num; /* convert to unsigned */ 57 if (signum < sys_nsig) 58 return ((char *)sys_siglist[signum]); 59 60 /* Do this by hand, so we don't link to stdio(3). */ 61 t = tmp; 62 if (num < 0) 63 signum = -signum; 64 do { 65 *t++ = "0123456789"[signum % 10]; 66 } while (signum /= 10); 67 if (num < 0) 68 *t++ = '-'; 69 for (p = ebuf + sizeof(UPREFIX) - 1;;) { 70 *p++ = *--t; 71 if (t <= tmp) 72 break; 73 } 74 *p = '\0'; 75 return (ebuf); 76 } 77