HardenedBSD/contrib/tcp_wrappers/percent_m.c
Ed Maste 14f102eacc tcp_wrappers: Use ANSI (c89) function definitions
Although this code is in contrib/ there is no active upstream.

Reviewed by:	brooks
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D36047
2023-03-21 10:09:34 -04:00

41 lines
763 B
C

/*
* Replace %m by system error message.
*
* Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
*/
#ifndef lint
static char sccsid[] = "@(#) percent_m.c 1.1 94/12/28 17:42:37";
#endif
#include <stdio.h>
#include <errno.h>
#include <string.h>
#ifndef SYS_ERRLIST_DEFINED
extern char *sys_errlist[];
extern int sys_nerr;
#endif
#include "mystdarg.h"
char *percent_m(char *obuf, char *ibuf)
{
char *bp = obuf;
char *cp = ibuf;
while (*bp = *cp)
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);
}