17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * Copyright (c) 1988, 1993
37c478bd9Sstevel@tonic-gate  *    The Regents of the University of California.  All rights reserved.
47c478bd9Sstevel@tonic-gate  *
57c478bd9Sstevel@tonic-gate  * Redistribution and use in source and binary forms, with or without
67c478bd9Sstevel@tonic-gate  * modification, are permitted provided that the following conditions
77c478bd9Sstevel@tonic-gate  * are met:
87c478bd9Sstevel@tonic-gate  * 1. Redistributions of source code must retain the above copyright
97c478bd9Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer.
107c478bd9Sstevel@tonic-gate  * 2. Redistributions in binary form must reproduce the above copyright
117c478bd9Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer in the
127c478bd9Sstevel@tonic-gate  *    documentation and/or other materials provided with the distribution.
137c478bd9Sstevel@tonic-gate  * 3. All advertising materials mentioning features or use of this software
147c478bd9Sstevel@tonic-gate  *    must display the following acknowledgement:
157c478bd9Sstevel@tonic-gate  * 	This product includes software developed by the University of
167c478bd9Sstevel@tonic-gate  * 	California, Berkeley and its contributors.
177c478bd9Sstevel@tonic-gate  * 4. Neither the name of the University nor the names of its contributors
187c478bd9Sstevel@tonic-gate  *    may be used to endorse or promote products derived from this software
197c478bd9Sstevel@tonic-gate  *    without specific prior written permission.
207c478bd9Sstevel@tonic-gate  *
217c478bd9Sstevel@tonic-gate  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
227c478bd9Sstevel@tonic-gate  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
237c478bd9Sstevel@tonic-gate  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
247c478bd9Sstevel@tonic-gate  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
257c478bd9Sstevel@tonic-gate  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
267c478bd9Sstevel@tonic-gate  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
277c478bd9Sstevel@tonic-gate  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
287c478bd9Sstevel@tonic-gate  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
297c478bd9Sstevel@tonic-gate  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
307c478bd9Sstevel@tonic-gate  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
317c478bd9Sstevel@tonic-gate  * SUCH DAMAGE.
327c478bd9Sstevel@tonic-gate  */
337c478bd9Sstevel@tonic-gate 
347c478bd9Sstevel@tonic-gate #include "port_before.h"
357c478bd9Sstevel@tonic-gate 
367c478bd9Sstevel@tonic-gate #include <sys/param.h>
377c478bd9Sstevel@tonic-gate #include <sys/types.h>
387c478bd9Sstevel@tonic-gate 
397c478bd9Sstevel@tonic-gate #include <string.h>
407c478bd9Sstevel@tonic-gate 
417c478bd9Sstevel@tonic-gate #include "port_after.h"
427c478bd9Sstevel@tonic-gate 
437c478bd9Sstevel@tonic-gate #ifndef NEED_STRERROR
447c478bd9Sstevel@tonic-gate int __strerror_unneeded__;
457c478bd9Sstevel@tonic-gate #else
467c478bd9Sstevel@tonic-gate 
477c478bd9Sstevel@tonic-gate #ifdef USE_SYSERROR_LIST
487c478bd9Sstevel@tonic-gate extern int sys_nerr;
497c478bd9Sstevel@tonic-gate extern char *sys_errlist[];
507c478bd9Sstevel@tonic-gate #endif
517c478bd9Sstevel@tonic-gate 
527c478bd9Sstevel@tonic-gate const char *
isc_strerror(int num)537c478bd9Sstevel@tonic-gate isc_strerror(int num) {
547c478bd9Sstevel@tonic-gate #define	UPREFIX	"Unknown error: "
55*9525b14bSRao Shoaib 	static char ebuf[40] = UPREFIX;		/*%< 64-bit number + slop */
567c478bd9Sstevel@tonic-gate 	u_int errnum;
577c478bd9Sstevel@tonic-gate 	char *p, *t;
58*9525b14bSRao Shoaib #ifndef USE_SYSERROR_LIST
597c478bd9Sstevel@tonic-gate 	const char *ret;
60*9525b14bSRao Shoaib #endif
617c478bd9Sstevel@tonic-gate 	char tmp[40];
627c478bd9Sstevel@tonic-gate 
63*9525b14bSRao Shoaib 	errnum = num;				/*%< convert to unsigned */
647c478bd9Sstevel@tonic-gate #ifdef USE_SYSERROR_LIST
65*9525b14bSRao Shoaib 	if (errnum < (u_int)sys_nerr)
667c478bd9Sstevel@tonic-gate 		return (sys_errlist[errnum]);
677c478bd9Sstevel@tonic-gate #else
687c478bd9Sstevel@tonic-gate #undef strerror
69*9525b14bSRao Shoaib 	ret = strerror(num);			/*%< call strerror() in libc */
707c478bd9Sstevel@tonic-gate 	if (ret != NULL)
717c478bd9Sstevel@tonic-gate 		return(ret);
727c478bd9Sstevel@tonic-gate #endif
737c478bd9Sstevel@tonic-gate 
747c478bd9Sstevel@tonic-gate 	/* Do this by hand, so we don't include stdio(3). */
757c478bd9Sstevel@tonic-gate 	t = tmp;
767c478bd9Sstevel@tonic-gate 	do {
777c478bd9Sstevel@tonic-gate 		*t++ = "0123456789"[errnum % 10];
787c478bd9Sstevel@tonic-gate 	} while (errnum /= 10);
797c478bd9Sstevel@tonic-gate 	for (p = ebuf + sizeof(UPREFIX) - 1;;) {
807c478bd9Sstevel@tonic-gate 		*p++ = *--t;
817c478bd9Sstevel@tonic-gate 		if (t <= tmp)
827c478bd9Sstevel@tonic-gate 			break;
837c478bd9Sstevel@tonic-gate 	}
847c478bd9Sstevel@tonic-gate 	return (ebuf);
857c478bd9Sstevel@tonic-gate }
867c478bd9Sstevel@tonic-gate 
877c478bd9Sstevel@tonic-gate #endif /*NEED_STRERROR*/
88*9525b14bSRao Shoaib 
89*9525b14bSRao Shoaib /*! \file */
90