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| <TITLE>The Apache TPF Port</TITLE> |
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| <A NAME="top"></A> |
| <H1 align="center">Overview of the Apache TPF Port</H1> |
| <HR> |
| <CENTER>[ <A HREF="#configuration_files">Configuration Files</A> |
| | <A HREF="#whats_available">What's Available</A> |
| | <A HREF="#porting_notes">Porting Notes</A> ] |
| </CENTER> |
| <HR> |
| <BR> |
| |
| <P> |
| This version of Apache includes changes allowing it to run on |
| IBM's EBCDIC-based |
| <A HREF="http://www.s390.ibm.com/products/tpf/tpfhp.html">TPF</A> |
| (Transaction Processing Facility) operating system. |
| Unless otherwise noted TPF version 4.1 PUT08 and APAR PJ25589 are required. |
| <BR><BR> |
| Refer to htdocs/manual/<A HREF="install-tpf.html">install-tpf.html</A> |
| for step-by-step installation instructions. |
| <BR><BR> |
| As this is the first cut at making Apache run on TPF, |
| performance tuning has not been done. |
| <BR><BR> |
| This port builds upon the <A HREF="ebcdic.html">EBCDIC changes</A> |
| previously made to Apache. |
| <BR> |
| </P> |
| |
| <A NAME="configuration_files"> </A> |
| <H2 align=center>Apache Configuration Files</H2> |
| <P> |
| The distributed configuration files (httpd.conf-dist and |
| mime.types, both located in the conf subdirectory) |
| work on TPF with only a couple of operating system specific changes |
| to httpd.conf:<BR> |
| <UL> |
| <LI>ServerType needs to be "inetd" on pre-PUT09 systems. |
| <LI>Performance considerations may dictate setting KeepAlive to "Off" |
| (the default is "On") or lowering the Timeout value from the default |
| 300 seconds (5 minutes) in order to reduce the number of active ECBs on your system. |
| </UL> |
| </P> |
| |
| <A NAME="whats_available"> </A> |
| <H2 align=center>What's Available in this Version</H2> |
| |
| (The Apache organization provides |
| <A HREF="http://www.apache.org/docs/">online documentation</A> |
| describing the various modules and components of the server.) |
| |
| <H3>Components/modules tested on TPF:</H3> |
| |
| <multicol COLS=3><UL> |
| <LI>alloc.c |
| <LI>ap_cpystrn.c |
| <LI>ap_fnmatch.c |
| <LI>ap_signal.c |
| <LI>ap_slack.c |
| <LI>ap_snprintf.c |
| <LI>buff.c |
| <LI>buildmark.c |
| <LI>ebcdic.c |
| <LI>gen_test.char.c |
| <LI>gen_uri_delims.c |
| <LI>http_config.c |
| <LI>http_core.c |
| <LI>http_log.c |
| <LI>http_main.c <A HREF="#note_1"> <i><small>(see note 1)</small></i></A> |
| <LI>http_protocol.c |
| <LI>http_request.c |
| <LI>http_vhost.c <i><small>(requires PUT9)</small></i> |
| <LI>logresolve.c <i><small>(requires PUT10)</small></i> |
| <LI>mod_access.c <A HREF="#note_2"> <i><small>(see note 2)</small></i></A> |
| <LI>mod_actions.c |
| <LI>mod_alias.c |
| <LI>mod_asis.c |
| <LI>mod_auth_anon.c |
| <LI>mod_autoindex.c |
| <LI>mod_cern_meta.c |
| <LI>mod_cgi.c <i><small>(requires PUT10)</small></i> |
| <LI>mod_dir.c |
| <LI>mod_env.c |
| <LI>mod_example.c |
| <LI>mod_expires.c |
| <LI>mod_headers.c |
| <LI>mod_imap.c |
| <LI>mod_include.c <A HREF="#note_3"> <i><small>(see note 3)</small></i></A> |
| <LI>mod_info.c |
| <LI>mod_log_agent.c |
| <LI>mod_log_config.c |
| <LI>mod_log_referer.c |
| <LI>mod_mime.c |
| <LI>mod_mime_magic.c |
| <LI>mod_negotiation.c |
| <LI><A HREF="http://hpwww.ec-lyon.fr/~vincent/apache/mod_put.html">mod_put.c</A> |
| <LI>mod_setenvif.c |
| <LI>mod_speling.c |
| <LI>mod_status.c |
| <LI>mod_unique_id.c <i><small>(requires PUT10)</small></i> |
| <LI>mod_userdir.c |
| <LI>mod_usertrack.c |
| <LI>os.c |
| <LI>os-inline.c |
| <LI>regular expression parser |
| <LI>rotatelogs.c <i><small>(requires PUT10)</small></i> |
| <LI>util.c |
| <LI>util_date.c |
| <LI>util_script.c |
| <LI>util_uri.c |
| </UL></MULTICOL> |
| <br><b>Notes:</b> |
| <A NAME="note_1"> </A> |
| <ol> |
| <li>"Standalone" mode requires TPF version 4.1 PUT09 |
| <A NAME="note_2"> </A> |
| <li>Use of mod_access directives "<tt>allow from</tt>" & "<tt>deny from</tt>" |
| with host <i>names</i> (verses ip addresses) requires TPF version 4.1 PUT10 |
| <A NAME="note_3"> </A> |
| <li>CGI execution requires TPF version 4.1 PUT10 |
| </ol> |
| |
| <H3>Components/modules not yet supported on TPF:</H3> |
| |
| <multicol COLS=3><UL> |
| <LI>ap_md5c.c |
| <LI>htpasswd.c |
| <LI>mod_auth.c |
| <LI>mod_digest.c |
| <LI>mod_mmap_static.c |
| <LI>mod_proxy.c |
| <LI>mod_rewrite.c |
| <LI>proxy_cache.c |
| <LI>proxy_connect.c |
| <LI>proxy_ftp.c |
| <LI>proxy_http.c |
| <LI>proxy_util.c |
| <LI>rfc1413.c |
| <LI>util_md5.c |
| </UL></MULTICOL> |
| |
| <H3>Components/modules that don't apply or that probably won't ever be available on TPF:</H3> |
| |
| <multicol COLS=3><UL> |
| <LI>mod_auth_db.c |
| <LI>mod_auth_dbm.c |
| <LI>mod_auth_db.module |
| <LI>mod_so.c |
| <LI>suexec.c |
| </UL></MULTICOL> |
| |
| <A NAME="porting_notes"> </A> |
| <H2 align=center>Porting Notes</H2> |
| <P> |
| <H3>Changes made due to differences between UNIX and |
| TPF's process models:</H3> |
| <UL> |
| <LI><STRONG>Signals</STRONG>: On TPF a signal that is sent to a process |
| remains unhandled until the process explicitly requests that signals |
| be handled using the <CODE>tpf_process_signals()</CODE> function. |
| Additionally, the default action for an alarm on TPF is to take |
| an OPR-7777 dump and exit. (On UNIX the default is the equivalent |
| of <CODE>exit()</CODE> with no dump taken.) |
| These differences necessitated a few modifications: |
| <BR><BR> |
| <UL> |
| <LI>bypass the use of <CODE>ap_block_alarms()</CODE> & |
| <CODE>ap_unblock_alarms()</CODE> |
| <LI>add <CODE>tpf_process_signals()</CODE> calls |
| <LI>add <CODE>select()</CODE> calls in buff.c to prevent blocking. |
| </UL> |
| <BR> |
| </UL> |
| |
| <H3>Find that function...</H3> |
| <P>Some simple functions & definitions needed to be added |
| on TPF, such as <CODE>FD_SET()</CODE>. |
| We've put these in src/os/tpf/os.h for now. |
| </P> |
| |
| <H3>EBCDIC changes:</H3> |
| <P>TPF-specific conversion tables between US-ASCII and |
| EBCDIC (character set IBM-1047 to be exact) were created |
| and put into ebcdic.c in the src/os/tpf directory. |
| </P> |
| |
| <H3>Miscellaneous, minor changes:</H3> |
| <P>Various minor changes (such as casting) were made due to |
| differences in how some functions are implemented on TPF. |
| </P> |
| |
| <HR> |
| <CENTER>[ <A HREF="#top">top</A> |
| | <A HREF="#configuration_files">Configuration Files</A> |
| | <A HREF="#whats_available">What's Available</A> |
| | <A HREF="#porting_notes">Porting Notes</A> ] |
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