LynxOS support

Hi Larry,

I've gone and ported your perl5.003 to LynxOS. I am attaching the
changes to make it work there. I am hoping you see fit to include them
in your next release. They are really quite minimal. I'm
really thankful the code is so portable. In summary the changes
affect three areas.

1) Configure support to have hints for LynxOS.

2) Our stdio under the covers has it spelled _fillbuf.

3) stat test fails because we don't have any setuid stuff in /usr/bin.
   It's all in /bin. Should be OK since all UNIX types I've seen have at
   the least su in /bin.

p5p-msgid: <m0vYEsY-0000IZC@kzinti.lynx.com>

5 files changed, 11 insertions, 531 deletions

diff --git a/Configure b/Configure
index e74287da04..982bfdda99 100755
--- a/Configure
+++ b/Configure
@@ -1557,6 +1557,7 @@ EOM
 	: Half the following guesses are probably wrong... If you have better
 	: tests or hints, please send them to doughera@lafcol.lafayette.edu
 	: The metaconfig authors would also appreciate a copy...
+	$test -f /lynx.os && osname=lynxos
 	$test -f /irix && osname=irix
 	$test -f /xenix && osname=sco_xenix
 	$test -f /dynix && osname=dynix
diff --git a/os2/README.old b/os2/README.old
deleted file mode 100644
index f49d6be1fa..0000000000
--- a/os2/README.old
+++ /dev/null
@@ -1,529 +0,0 @@
-This documentation to the previous version is somewhat applicable yet.
-No system() extensions, no -R option, the exec/system with one argument
-will use sh.exe only (if required). IZ
-
-			Perl 5.001 for OS/2.
-			   Patchlevel "m"
-
-        Copyright (c) 1989,1990,1991,1992,1993,1994  Larry Wall
-                       All rights reserved.
-
-		OS/2 port Copyright (c) 1990, 1991, 1994-95
-	       Raymond Chen, Kai Uwe Rommel, Andreas Kaiser
-                            
-Version 5 port (this package) by Andreas Kaiser <ak@ananke.s.bawue.de>
-(2:246/8506.9@fidonet).
-
-To run the executables supplied with this file, you have to install the
-EMX runtime package emxrt.zip of version 0.9a05 (0.9a, fixlevel 5) or
-later.
-
-The file emxrt.zip is available at ftp.rus.uni-stuttgart.de (the
-origin), ftp-os2.nmsu.edu and many other places.
-
-The source code of the original Perl 5.0 distribution is not included
-here. You can get it at ftp://ftp.wpi.edu:/perl5/perl5.001.tar.gz (and
-many other places).
-
-For documentation of Perl 5, look at the files into the directory tree
-"pod". For TeX or Postscript docs, get perlref-5.000.0.tar.gz. A LaTeX
-and postscript reference card is available at
-  ftp.NL.net:/pub/comp/programming/languages/perl/perlref-5.000.0.tar.gz
-  prep.ai.mit.edu:/pub/gnu/perlref-5.000.0.tar.gz
-
-Many REXX DLLs complement the features available by standard Perl,
-supporting system calls (YdbaUtil - RXU??.ZIP), xBase (RexxBase,
-shareware), serial I/O (RxAsync) and basic PM dialogs (VRexx). These
-packages can be found at many OS/2 FTP servers.
-
------------------------------------------------------------------------------
-Installation:
--------------
-
-If you did not have HPFS up to now, this is the right time to reformat
-your filesystem(s)... While Perl itself does not require HPFS, a lot
-of Perl library files do. Or try EMXOPT=-t.
-
-copy perl5.exe perl5x.exe `some PATH dir`
-copy os2\perlglob.exe `some PATH dir`
-copy perl5.dll `some LIBPATH dir`
-
-set PERL5LIB=x:/your/own/perl/lib;y:/somewhere/perl5/lib
-
-The perl5 extension DLLs (POSIX_.DLL, REXX_.DLL, ...) do not need a
-LIBPATH entry.
-
-Executables:
-------------
-
-perl5.exe,perl5.dll :	DynaLoader, REXX support, external DLLs
-
-			No fork. Running a command via open() returns 1
-			instead of the child process id.
-
-			Other modules supported via extension DLLs, no
-			builtins other than DynaLoader.
-
-perl5x.exe :		No Dynaloader, no REXX.
-
-			Supports fork. Running a command via open() uses fork
-			(slow) and correctly returns the child process id.
-
-			POSIX and Socket modules builtin. No other extension
-			modules supported.
-
-			Note that lib/Socket.pm and lib/POSIX.pm reflect
-			DLL use. If you need them with perl5x.exe, you
-			have to remove the "bootstrap" line.
-
------------------------------------------------------------------------------
-Building:
----------
-
-Requires:
-- Perl5.001.tar.gz (Perl 5.001 sources).
-- EMX 0.9a05 or later (Compiler).
-- OS/2 Development Toolkit (or change REXX inc/lib references).
-- Korn shell (ksh) or some other Unix-like shell named ksh.
-- DMake, with group recipes configured for a Unix shell.
-- Larry Walls "patch" program.
-- Several Unix-like tools, such as cp, cat, touch, find, ...
-
-get Perl 5.001 source
-apply patches\*		-- "official unofficial" patches to 5.001
-apply os2\patches	-- OS/2 platform patches
-copy ext\DynaLoader\dl_os2.xs ext\DynaLoader\DynaLoader.xs
-copy os2\config.sh .
-copy os2\makefile.mk .
-
-If you do not have UPM (User Profile Management), remove "UPM" from
-makefile.mk.
-
------------------------------------------------------------------------------
-Not supported, bugs, "OS/2 is Not Unix":
-----------------------------------------
-
-Depending on whether you run perl5.exe or perl5x.exe, you can either
-use extension modules and REXX, or fork, since the EMX implementation
-of fork conflicts with DLL support. Remember that there is a hidden
-fork in open(F, "-|") and open(F, "|-").
-
-config.sh (Config.pm) lies. It shows d_fork='undef' even though it is
-available in perl5x.exe. "dynamic_ext" and "extensions" are incorrect
-for perl5x.exe.
-
-flock is available but does not yet work in EMX 0.9a.
-
-ttyname and ctermid do not work (return NULL).
-
-... and of course a lot of Unix-isms like process group, user and group
-management, links, ...
-
-For details, look into config.sh and the EMX library reference.
-
-I did not test SDBM. I just added a lot of O_BINARY flags and compiled it.
-
-Several scripts of the test suite (see source distribution) fail due to
-Unix-isms like /bin/sh, `echo *`, different quoting requirements, ...
-
-When opening a command pipe [such as open(F,"cat|")], perl5.exe
-returns 1 instead of the child's process id. Perl5x.exe correctly
-returns the process id.
-
-OS/2 does not have a true exec API (which is used both by the exec
-function and when opening a command pipe with perl5x.exe). What
-actually happens is the call of a subprocess with the father waiting
-for the termination of its child. While waiting, the father still owns
-all its resources (it passes signals to the child however) and there
-may be some other side effects as well.
-
------------------------------------------------------------------------------
-OS2::REXX Module (external library):
-------------------------------------
-
-NOTE: By default, the REXX variable pool is not available, neither to
-Perl, nor to external REXX functions. To enable it, you have to start
-Perl with the switch -R, which makes Perl call its interpreter through
-REXX. REXX functions which do not use variables may be usable even
-without -R though.
-
-Load REXX DLL:
-
-	$dll = load OS2::REXX NAME [, WHERE];
-
-	NAME is DLL name, without path and extension.
-
-	Directories are searched WHERE first (list of dirs), then
-	environment paths PERL5REXX, PERLREXX or, as last resort, PATH.
-
-	The DLL is not unloaded when the variable dies.
-
-	Returns DLL object reference, or undef on failure.
-
-Define function prefix:
-
-	$dll->prefix(NAME);
-
-	Define the prefix of external functions, prepended to the
-	function names used within your program, when looking for
-	the entries in the DLL.
-
-	Example:
-		$dll = load OS2::REXX "RexxBase";
-		$dll->prefix("RexxBase_");
-		$dll->Init();
-	is the same as
-		$dll = load OS2::REXX "RexxBase";
-		$dll->RexxBase_Init();
-
-Define queue:
-
-	$dll->queue(NAME);
-
-	Define the name of the REXX queue passed to all external
-	functions of this module. Defaults to "SESSION".
-
-Check for functions (optional):
-
-	BOOL = $dll->find(NAME [, NAME [, ...]]);
-
-	Returns true if all functions are available.
-
-Call external REXX function:
-
-	$dll->function(arguments);
-
-	Returns the return string if the return code is 0, else undef.
-	Dies with error message if the function is not available.
-
-Bind scalar variable to REXX variable:
-
-	tie $var, OS2::REXX, "NAME";
-
-Bind array variable to REXX stem variable:
-
-	tie @var, OS2::REXX, "NAME.";
-
-	Only scalar operations work so far. No array assignments,
-	no array operations, ... FORGET IT.
-
-Bind hash array variable to REXX stem variable:
-
-	tie %var, OS2::REXX, "NAME.";
-
-	To access all visible REXX variables via hash array, bind to "";
-
-	No array assignments. No array operations, other than hash array
-	operations. Just like the *dbm based implementations.
-
-	For the usual REXX stem variables, append a "." to the name,
-	as shown above. If the hash key is part of the stem name, for
-	example if you bind to "", you cannot use lower case in the stem
-	part of the key and it is subject to character set restrictions.
-
-Erase individual REXX variables (bound or not):
-
-	OS2::REXX::drop("NAME" [, "NAME" [, ...]]);
-
-Note that while function and variable names are case insensitive in the
-REXX language, function names exported by a DLL and the REXX variables
-(as seen by Perl through the chosen API) are all case sensitive!
-
-Most REXX DLLs export function names all upper case, but there are a
-few which export mixed case names (such as RxExtras). When trying to
-find the entry point, both exact case and all upper case are searched.
-If the DLL exports "RxNap", you have to specify the exact case, if it
-exports "RXOPEN", you can use any case.
-
-To avoid interfering with subroutine names defined by Perl (DESTROY)
-or used within the REXX module (prefix, find), it is best to use mixed
-case and to avoid lowercase only or uppercase only names when calling
-REXX functions. Be consistent. The same function written in different
-ways results in different Perl stubs.
-
-There is no REXX interpolation on variable names, so the REXX variable
-name TEST.ONE is not affected by some other REXX variable ONE. And it
-is not the same variable as TEXT.one!
-
-You cannot call REXX functions which are not exported by the DLL.
-While most DLLs export all their functions, some, like RxFTP, export
-only "...LoadFuncs", which registers the functions within REXX only.
-
-You cannot call 16-bit DLLs. The few interesting ones I found
-(FTP,NETB,APPC) do not export their functions.
-
-I do not know whether the REXX API is reentrant with respect to
-exceptions (signals) when the REXX top-level exception handler is
-overridden. So unless you know better than I do, do not access REXX
-variables (probably tied to Perl variables) or call REXX functions
-which access REXX queues or REXX variables in signal handlers.
-
-See ext/OS2/REXX/rx*.pl for examples.
-
------------------------------------------------------------------------------
-OS2::UPM (external library):
-----------------------------
-
-UPM constants (see <upm.h>) are exported automatically, functions only
-on request.
-
-(USERID, TYPE) = local_user ()
-
-	return local user
-
-LIST = user_list (REMOTENODE="", REMOTETYPE_UPM_LOCAL)
-	LIST = 4 items per logged on user
-		[0] = user id
-		[1] = remote node name
-		[2] = remote node type (INT)
-		[3] = session id (INT)
-
-(USERID, TYPE) = local_logon ()
-
-	do a local logon, PM window, if not already logged on
-
-BOOL = logon (USERID, PASSWORD, AUTHCHECK=UPM_USER, REMOTENODE="", REMOTETYPE=UPM_LOCAL)
-BOOL = logoff (USERID, REMOTENODE="", REMOTETYPE=UPM_LOCAL)
-
-	logon/logoff process (DB2/2)
-
-BOOL = logon_user (USERID, PASSWORD, REMOTENODE="", REMOTETYPE=UPM_LOCAL)
-BOOL = logoff_user (USERID, REMOTENODE="", REMOTETYPE=UPM_LOCAL)
-
-	logon/logoff user
-
-ERRCODE = error ()
-
-	return UPM error code of last failure
-
-STRING = message (ERRCODE)
-
-	return message text for supplied UPM error code
-
-Defaults:
-	REMOTETYPE = UPM_LOCAL
-	REMOTENODE = ""
-	AUTHCHECK  = UPM_USER
-
------------------------------------------------------------------------------
-OS2::FTP (external library):
-----------------------------
-
-$acct = new FTP "host", "userid", "passwd" [, "acct"]
-
-	Create virtual FTP session - no login.
-
-FTP::logoff()
-
-	Logoff all sessions.
-
-($msec, $address) = FTP::ping("host", pktlen);
-$msec = FTP::ping($address, pktlen);
-
-	Ping host. Returns milliseconds or negative error code.
-	$address is 32-bit number.
-
-$errno = $acct->errno();
-
-	Return last error code (FTP*).
-
-$text = FTP::message($errno);
-
-	Return message test of last error.
-
-$status:  <0 on error, >=0 on success.
-$tfrtype: T_BINARY, T_ASCII, T_EBCDIC
-"mode":   "w" for overwrite, "a" for append
-
-$status = $acct->dir("local", "pattern"="*");
-$status = $acct->ls("local", "pattern"="*");
-
-$status = $acct->chdir("dir");
-$status = $acct->mkdir("dir");
-$status = $acct->rmdir("dir");
-($status, $cwd) = $acct->getcwd();
-
-$status = $acct->get("local", "remote"=local, "mode"="w", $tfrtype=T_BINARY);
-
-$status = $acct->put("local", "remote"=local, $tfrtype=T_BINARY);
-$status = $acct->putunique("local", "remote"=local, $tfrtype=T_BINARY);
-$status = $acct->append("local", "remote"=local, $tfrtype=T_BINARY);
-
-$status = $acct->rename("from", "to");
-$status = $acct->delete("name");
-
-$status = $acct->proxy($source_acct, "dst_file", "src_file", $tfrtype=T_BINARY);
-
-$status = $acct->quote("string");
-$status = $acct->site("string");
-($status, $infostring) = $acct->sys();
-
------------------------------------------------------------------------------
-Other:
-------
-
-  setpriority CLASS,PID,DELTA
-
-	Set priority of process or process tree.
-
-	PID:
-		>= 0:	process only
-		<  0:	process tree
-
-	CLASS:
-		0	no change
- 		1	idle-time	(lowest)
-  		2	regular		(dynamic priority)
-  		3	time-critical	(highest)
-  		4	fixed-high	(between regular and time-critical)
-
-	DELTA:
-		-31..+31
-
-  getpriority IGNORED,PID
-
-  	Return priority of process or process tree.
-
-		Bits 8..15	priority class (1..4)
-		Bits 0..7	priority within class (0..31)
-
-  system LIST
-
-	If the first element of LIST is an integer, it controls the
-	started child process or session as follows:
-
-		0	= wait until child terminates (default)
-		1	= do not wait, use wait() or waitpid() for status
-		4	= new session
-		5	= detached
-		6	= PM program
-
-	PM and session options, or-ed in:
-
-		0x00000	= default
-		0x00100	= minimized
-		0x00200	= maximized
-		0x00300	= fullscreen (session only)
-		0x00400	= windowed (session only)
-
-		0x00000	= foreground (only if running in foreground)
-		0x01000	= background
-
-		0x02000	= don't close window on exit (session only)
-
-		0x10000 = quote all arguments
-		0x20000	= MKS argument passing convention
-
-	If the control is not zero, system() does not wait until
-	the child terminates and the return code is the id of the
-	child process.
-
-	If the control is not zero, and you do not call wait or
-	waitpid, the child status fills up memory.
-
-	Note: If the program is started with a mode of 4 or 6, it may
-	be aborted when the starting program (perl) terminates. Later
-	releases of EMX.DLL will probably know yet another flag bit
-	to cut this fatal relationship.
-
-  system STRING
-  exec STRING
-
-	If the string starts with "@" or contains any of "%&|<>",
-	it is called as a shell command. Else the program is called
-	directly.
-
-	If the environment variable SHELL is defined, it is used
-	instead of COMSPEC when running shell commands. It should
-	be a Unix-style shell.
-
-  file checks (-X), stat(), ...
-
-  	When testing filenames, not handles, char-devices are detected
-  	only when prefixed by "/dev/", so "/dev/con" is valid, "con" is
-  	not.
-
-	Currently, only /dev/con and /dev/tty are recognized.
-
------------------------------------------------------------------------------
-History:
-
-15.12.94 	Initial release (perl5000.zip).
-
-17.12.94	Moved REXX sub defn to find(). Hash array for functions no
-		longer required, allows overriding subs like "find".
-
-		DLL entries are case sensitive, try both upper case and
-		exact case.
-
-18.12.94	Detect char- and block-devices (stat() hack). Some future
-		release may probably remove block device support, once
-		char-device support is built into EMX.
-
-		Fixed perl5db tty check.
-
-22.12.94	EMX fixlevel 2 exports its exception handler, so now
-		signals work even when the REXX variable pool is enabled.
-
-		Disabled error and exception popups.
-
-27.12.94	Case conversions of tied variables cleaned up.
-
-		REXX (REXX.DLL, REXXAPI.DLL) now loaded on demand.
-
-7.1.95		Fixed Shell module (did not allow more than one argument).
-
-11.1.95		Accept drive letter as absolute path in do/require/use.
-
-13.1.95		Larrys memory-leak patches (#1, dated Friday 13).
-
-26.1.95		fcntl and ioctl were missing. fcntl was explicitly disabled
-		in its source code (ifndef DOSISH) and the ioctl enabler is
-		in the wrong place (unixish.h instead of config.sh).
-
-16.3.95 	DosQueryFSAttach (stat hack) may crash the system. Now just
-		look for /dev/con and /dev/tty.
-
-		Applied "pad_findlex" patch (patches/1).
-
-23.3.95		Support fork. Two executables, one for DLLs and one for fork.
-
-24.3.95	5.001
-
-13.4.95		Patchlevel "c".
-
-21.4.95		Truncate names of extension DLLs to 8 chars - Warp no longer
-		accepts them (2.x did).
-
-22.4.95		Replaced EMX dirent by my own to get all directory entries
-		even when HPFS386 is used. Additionally, my implementation
-		is not restricted in the total size of the directory (a
-		conflict between Perls memory allocator and the one of the
-		EMX library DLL).
-
-27.4.95		Support for fork() disabled system() in DLL version.
-
-7.5.95		Added Tye McQueen's FileGlob. See File::KGlob*.
-
-12.5.95		Fixed Cwd. Fixed OS/2 dependencies in MakeMaker, with
-		a few Config.sh items added (separators, exe-extension).
-
-		Moved UPM and REXX to OS2::. Combined REXXCALL and REXX.
-		Plain old REXX module is still available as passthru though.
-
-		Perl DLLs now have an underscore appended to avoid name
-		conflicts with standard OS/2 DLLs (see DynaLoader.pm).
-
-13.5.95		Added FTP API support (OS2::FTP).
-		
-2.7.95		Applied "official unofficial" patches up to level "m".
-		The modpods documentation now is in the modules themselves.
-
-4.7.95		Implement command pipes (my_popen) using fork instead of
-		standard popen in the fork version (perl5x.exe). While this
-		is a lot slower, it correctly returns the process id and
-		supports open(F,"-|") and open(F,"|-").
-
-		Use the same code for exec(CMD) as for system(CMD).
-
-		Support socket functions (set|get|end)(host|net|proto|serv)ent.
diff --git a/sv.c b/sv.c
index 7215b96062..96c812c0ab 100644
--- a/sv.c
+++ b/sv.c
@@ -2675,7 +2675,11 @@ I32 append;
 
 	FILE_cnt(fp) = cnt;		/* deregisterize cnt and ptr */
 	FILE_ptr(fp) = ptr;
+#if defined(__Lynx__)
+	i = _fillbuf(fp);		/* get more characters */
+#else
 	i = _filbuf(fp);		/* get more characters */
+#endif
 	cnt = FILE_cnt(fp);
 	ptr = FILE_ptr(fp);		/* reregisterize cnt and ptr */
 
diff --git a/t/op/stat.t b/t/op/stat.t
index 0ec31689cd..d1ddb2696a 100755
--- a/t/op/stat.t
+++ b/t/op/stat.t
@@ -116,8 +116,8 @@ if (! -b '.') {print "ok 34\n";} else {print "not ok 34\n";}
 $cnt = $uid = 0;
 
 die "Can't run op/stat.t test 35 without pwd working" unless $cwd;
-print ("not ok 35\n"), goto tty_test unless -d '/usr/bin';
-chdir '/usr/bin' || die "Can't cd to /usr/bin";
+print ("not ok 35\n"), goto tty_test unless -d '/bin';
+chdir '/bin' || die "Can't cd to /bin";
 while (defined($_ = <*>)) {
     $cnt++;
     $uid++ if -u;
diff --git a/x2p/str.c b/x2p/str.c
index e9dd34400f..64304a70de 100644
--- a/x2p/str.c
+++ b/x2p/str.c
@@ -317,7 +317,11 @@ register FILE *fp;
 	
 	FILE_cnt(fp) = cnt;		/* deregisterize cnt and ptr */
 	FILE_ptr(fp) = ptr;
+#if defined(__Lynx__)
+	i = _fillbuf(fp);		/* get more characters */
+#else
 	i = _filbuf(fp);		/* get more characters */
+#endif
 	cnt = FILE_cnt(fp);
 	ptr = FILE_ptr(fp);		/* reregisterize cnt and ptr */