usr/src/usr.bin/f77/libU77/chdir_.c

/*-
 * Copyright (c) 1980 The Regents of the University of California.
 * All rights reserved.
 *
 * This module is believed to contain source code proprietary to AT&T.
 * Use and redistribution is subject to the Berkeley Software License
 * Agreement and your Software Agreement with AT&T (Western Electric).
 */

#ifndef lint
static char sccsid[] = "@(#)chdir_.c    5.2 (Berkeley) 4/12/91";
#endif /* not lint */

/*
 * change default directory
 *
 * calling sequence:
 *      integer chdir
 *      ierror = chdir(dirname)
 * where:
 *      ierror will receive a returned status (0 == OK)
 *      dirname is the directory name
 */

#include "../libI77/f_errno.h"
#include <sys/param.h>
#ifndef MAXPATHLEN
#define MAXPATHLEN      128
#endif

long chdir_(dname, dnamlen)
char *dname;
long dnamlen;
{
        char buf[MAXPATHLEN];

        if (dnamlen >= sizeof buf)
                return((long)(errno=F_ERARG));
        g_char(dname, dnamlen, buf);
        if (chdir(buf) != 0)
                return((long)errno);
        return(0L);
}