xref: /netbsd-src/usr.sbin/tcpdchk/percent_m.c (revision 421949a31fb0942d3d87278998c2d7d432d8b3cb)
1 /*	$NetBSD: percent_m.c,v 1.5 2018/01/23 21:06:26 sevan Exp $	*/
2 
3  /*
4   * Replace %m by system error message.
5   *
6   * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
7   */
8 
9 #include <sys/cdefs.h>
10 #ifndef lint
11 #if 0
12 static char sccsid[] = "@(#) percent_m.c 1.1 94/12/28 17:42:37";
13 #else
14 __RCSID("$NetBSD: percent_m.c,v 1.5 2018/01/23 21:06:26 sevan Exp $");
15 #endif
16 #endif
17 
18 #include <stdio.h>
19 #include <errno.h>
20 #include <string.h>
21 
22 #ifndef SYS_ERRLIST_DEFINED
23 extern char *sys_errlist[];
24 extern int sys_nerr;
25 #endif
26 
27 #include "mystdarg.h"
28 #include "percent_m.h"
29 
percent_m(char * obuf,const char * ibuf)30 char *percent_m(char *obuf, const char *ibuf)
31 {
32     char   *bp = obuf;
33     const char   *cp = ibuf;
34 
35     while ((*bp = *cp) != '\0')
36 	if (*cp == '%' && cp[1] == 'm') {
37 	    strcpy(bp, strerror(errno));
38 	    bp += strlen(bp);
39 	    cp += 2;
40 	} else {
41 	    bp++, cp++;
42 	}
43     return (obuf);
44 }
45