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[unix-history] / usr / src / usr.bin / f77 / libU77 / link_.c

/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved.  The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
*      @(#)link_.c     5.1     %G%
*/

/*
* make a link to an existing file
*
* calling sequence:
*      ierror = link(name1, name2)
* where:
*      name1 is the pathname of an existing file
*      name2 is a pathname to be linked to file name1
*      ierror will be 0 if successful; a system error code otherwise.
*/

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

long link_(name1, name2, n1len, n2len)
char *name1, *name2;
long n1len, n2len;
{
       char buf1[MAXPATHLEN];
       char buf2[MAXPATHLEN];

       if (n1len >= sizeof buf1 || n2len >= sizeof buf2)
               return((long)(errno=F_ERARG));
       g_char(name1, n1len, buf1);
       g_char(name2, n2len, buf2);
       if (buf1[0] == '\0' || buf2[0] == '\0')
               return((long)(errno=F_ERARG));
       if (link(buf1, buf2) != 0)
               return((long)errno);
       return(0L);
}