NetBSD/usr.sbin/tcpdchk/percent_m.c

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/* $NetBSD: percent_m.c,v 1.2 1997/10/11 21:41:40 christos Exp $ */
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/*
* Replace %m by system error message.
*
* Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
*/
#include <sys/cdefs.h>
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#ifndef lint
#if 0
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static char sccsid[] = "@(#) percent_m.c 1.1 94/12/28 17:42:37";
#else
__RCSID("$NetBSD: percent_m.c,v 1.2 1997/10/11 21:41:40 christos Exp $");
#endif
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#endif
#include <stdio.h>
#include <errno.h>
#include <string.h>
extern int errno;
#ifndef SYS_ERRLIST_DEFINED
extern char *sys_errlist[];
extern int sys_nerr;
#endif
#include "mystdarg.h"
#include "percent_m.h"
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char *percent_m(obuf, ibuf)
char *obuf;
const char *ibuf;
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{
char *bp = obuf;
const char *cp = ibuf;
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while ((*bp = *cp) != '\0')
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if (*cp == '%' && cp[1] == 'm') {
if (errno < sys_nerr && errno > 0) {
strcpy(bp, sys_errlist[errno]);
} else {
sprintf(bp, "Unknown error %d", errno);
}
bp += strlen(bp);
cp += 2;
} else {
bp++, cp++;
}
return (obuf);
}