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diff --git a/man/man4/intro.html b/man/man4/intro.html deleted file mode 100644 index ec2409c0..00000000 --- a/man/man4/intro.html +++ /dev/null @@ -1,92 +0,0 @@ -<head> -<title>intro(4) - Plan 9 from User Space</title> -<meta content="text/html; charset=utf-8" http-equiv=Content-Type> -</head> -<body bgcolor=#ffffff> -<table border=0 cellpadding=0 cellspacing=0 width=100%> -<tr height=10><td> -<tr><td width=20><td> -<tr><td width=20><td><b>INTRO(4)</b><td align=right><b>INTRO(4)</b> -<tr><td width=20><td colspan=2> - <br> -<p><font size=+1><b>NAME </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - intro – introduction to file servers<br> - -</table> -<p><font size=+1><b>DESCRIPTION </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - A Plan 9 <i>file server</i> provides a file tree to processes. This section - of the manual describes servers that can be mounted in a name - space to give a file-like interface to interesting services. A - file server may be a provider of a conventional file system, with - files maintained on permanent storage, or it may also be a process - that synthesizes files in some manner. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - In Plan 9, the kernel mount device <i>mnt</i>(3) acts as a client to - the 9P servers mounted in the current name space, translating - system calls such as <a href="../man2/open.html"><i>open</i>(2)</a> into 9P transactions such as <i>open</i>(9p). - The kernel also multiplexes the potentially many processes onto - a single 9P conversation with each server. Finally, the kernel - provides each process with its own private <i>name space</i> which it - can customize at will. Modern Unix systems do not provide these - niceties, so the Unix port of these Plan 9 file servers provides - them via other means. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - On Unix, 9P clients do not access servers via the traditional - file system call interface. Only the Unix name space can be accessed - that way. Instead, 9P clients use the <a href="../man3/9pclient.html"><i>9pclient</i>(3)</a> library to connect - and interact directly with particular 9P servers. The <a href="../man1/9p.html"><i>9p</i>(1)</a> command-line - client is useful for interactive use and in shell - scripts. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - To preserve the façade of a single 9P conversation with each server, - 9P servers invoke <a href="../man4/9pserve.html"><i>9pserve</i>(4)</a>, typically via <a href="../man3/post9pservice.html"><i>post9pservice</i>(3)</a>. - <i>9pserve</i> announces a 9P service at a particular network address - and multiplexes the clients that connect to that address onto - a single 9P conversation with the server. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - Each ported program operates in a pseudo-name space that determines - which 9P servers it is using. The name space of a ported program - is represented by a directory containing Unix domain sockets, - one for each 9P server. The directory defaults to <tt><font size=+1>/tmp/ns.$USER.$DISPLAY</font></tt>, - meaning that all programs in an X - Windows login session share a single name space. Setting the <tt><font size=+1>$NAMESPACE</font></tt> - environment variable overrides this default. The <a href="../man1/namespace.html"><i>namespace</i>(1)</a> - command prints the current name space directory. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - Occasionally it is useful to be able to connect the input or output - of a standard Unix program to a file served by a 9P server. The - new <i>openfd</i>(9p) 9P transaction, which depends on file descriptor - passing, provides a sufficient workaround in many cases. <i>9pserve</i>’s - implementation of <i>openfd</i> (see also <i>fsopenfd</i> in - <a href="../man3/9pclient.html"><i>9pclient</i>(3)</a>) returns the read or write end of a pipe; a helper - process transfers data between the other end of the pipe and the - 9P server. Note that since the data is being transferred via a - pipe, 9P read and write errors cannot be passed on to the Unix - program. The Unix program sees only end-of-file or a closed pipe. - -</table> - -<td width=20> -<tr height=20><td> -</table> -<!-- TRAILER --> -<table border=0 cellpadding=0 cellspacing=0 width=100%> -<tr height=15><td width=10><td><td width=10> -<tr><td><td> -<center> -<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a> -</center> -</table> -<!-- TRAILER --> -</body></html> |