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From: woods@eci386.uucp (Greg A. Woods)
Newsgroups: news.software.b,comp.sys.att
Subject: Re: rn vs. Sys V questions
Summary: why does everyone do this wrong!
Message-ID: <1990Feb26.192405.25927@eci386.uucp>
Date: 26 Feb 90 19:24:05 GMT
References: <665@smcnet.UUCP>
Reply-To: woods@eci386.UUCP (Greg A. Woods)
Distribution: na
Organization: Elegant Communications Inc., Toronto, Canada
Lines: 103

In article <665@smcnet.UUCP> neal@smcnet.UUCP (Neal S. Pollack) writes:
> I am trying to install rn on an AT&T 3B2/600 with SYS V rel 3.2
> software.  Thanks to help from the net, I was able to get it to
> compile.  However, it does not work.

I guess the help you got from the net was wrong.  SysVr3+ has standard
directory routines (i.e. IEEE 1003.1 versions).  DON'T use the
ndir.[ch] that comes with rn.  It may break on RFS or NFS, and
probably on other strange filesystems (i.e. BSD :-) that some vendors
ship with their SysV's (remember SysV doesn't necessarily always have
UFS type filesystems).

Here's what's necessary for rn patchlevel 40 and up.  I imagine this
will work on your P39 version too.  (Yes, you should use <dirent.h>,
and let Configure use the opendir it finds in libc.a.  This will work
for any SysVr3+, or if you use Gwyn's libdirent.a.  You should always
use <dirent.h> where available, and make the necessary adaptations to
the code to conform to the IEEE1003.1 interface!)

Index: ngdata.c
*** Standard Input	Wed Dec 31 19:00:00 1969
--- ngdata.c	Wed Jun 14 19:16:31 1989
***************
*** 8,14 ****
  
  #include "EXTERN.h"
  #include "common.h"
! #include "ndir.h"
  #include "rcstuff.h"
  #include "rn.h"
  #include "intrp.h"
--- 8,14 ----
  
  #include "EXTERN.h"
  #include "common.h"
! #include <dirent.h>
  #include "rcstuff.h"
  #include "rn.h"
  #include "intrp.h"
***************
*** 185,191 ****
  ART_NUM floor;
  {
      register DIR *dirp;
!     register struct direct *dp;
      register ART_NUM min = 1000000;
      register ART_NUM maybe;
      register char *p;
--- 185,191 ----
  ART_NUM floor;
  {
      register DIR *dirp;
!     register struct dirent *dp;
      register ART_NUM min = 1000000;
      register ART_NUM maybe;
      register char *p;
***************
*** 194,200 ****
      dirp = opendir(dirname);
      if (!dirp)
  	return 0;
!     while ((dp = readdir(dirp)) != Null(struct direct *)) {
  	if ((maybe = atol(dp->d_name)) < min && maybe > floor) {
  	    for (p = dp->d_name; *p; p++)
  		if (!isdigit(*p))
--- 194,200 ----
      dirp = opendir(dirname);
      if (!dirp)
  	return 0;
!     while ((dp = readdir(dirp)) != Null(struct dirent *)) {
  	if ((maybe = atol(dp->d_name)) < min && maybe > floor) {
  	    for (p = dp->d_name; *p; p++)
  		if (!isdigit(*p))

There's also a problem with sprintf(), even in P44.  I didn't bother
to #ifdef it, so don't give the patched source back to a BSD site!

Index: common.h
*** Standard Input	Wed Dec 31 19:00:00 1969
--- common.h	Mon Nov 14 21:31:20 1988
***************
*** 670,676 ****
  char	*getenv();
  char	*strcat();
  char	*strcpy();
! char	*sprintf();
  
  EXT char buf[LBUFLEN+1];	/* general purpose line buffer */
  EXT char cmd_buf[CBUFLEN];	/* buffer for formatting system commands */
--- 670,676 ----
  char	*getenv();
  char	*strcat();
  char	*strcpy();
! int	sprintf();
  
  EXT char buf[LBUFLEN+1];	/* general purpose line buffer */
  EXT char cmd_buf[CBUFLEN];	/* buffer for formatting system commands */
-- 
						Greg A. Woods

woods@{eci386,gate,robohack,ontmoh,tmsoft,gpu.utcs.UToronto.CA,utorgpu.BITNET}
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