27a83106f4
The initial protocol handling in exportfs for cpu and import services is a huge mess. Saparate the code out into its own program with its own oexportfs(4) manpage.
147 lines
2.6 KiB
Plaintext
147 lines
2.6 KiB
Plaintext
.TH OEXPORTFS 4
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.SH NAME
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oexportfs \- legacy exportfs for cpu and import
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.SH SYNOPSIS
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.PP
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.B oexportfs
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[
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.I options
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]
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.SH DESCRIPTION
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.I Oexportfs
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is older version of the
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.IR exportfs (4)
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program that handles an initial protocol to establish a root directory
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for the exported name space.
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It also provides authentication and encryption using
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the
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.IR ssl (3)
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device.
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.PP
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It is used exclusively by the deprecated
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.IR cpu (1)
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and
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.IR import (4)
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services.
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.PP
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The options are:
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.TP
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.B -d -f \fIdbgfile
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Log all 9P traffic to
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.I dbgfile
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(default
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.BR /tmp/exportdb ).
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.TP
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.B -P \fIpatternfile
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Restrict the set of exported files.
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.I Patternfile
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contains one regular expression per line,
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to be matched against path names
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relative to the current working directory
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and starting with
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.BR / .
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For a file to be exported, all lines with a prefix
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.B +
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must match and all those with prefix
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.B -
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must not match.
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.TP
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.B -R
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Make the served name space read only.
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.TP
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.B -r \fIroot
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Serve the name space rooted at
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.IR root .
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.TP
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.B -S \fIservice
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Serve the result of mounting
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.IR service .
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A separate mount is used for each
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.IR attach (5)
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message,
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to correctly handle servers in which each mount
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corresponds to a different client
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.IR e.g. , (
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.IR rio (4)).
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.TP
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.B -s
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equivalent to
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.B -r
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.BR / ;
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kept for compatibility.
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.TP
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.B -m \fImsize
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Set the maximum message size that
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.I oexportfs
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should offer to send (see
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.IR version (5));
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this helps tunneled
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9P connections to avoid unnecessary fragmentation.
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.TP
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.B -A \fIaddress
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Use the network
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.I address
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to announce
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.IR aan (8)
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connections,
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if requested by the initial protocol.
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.TP
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.B -a
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Authenticate the user with the
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.I p9any
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protocol before running the regular
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.I oexportfs
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session; used when
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.I oexportfs
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is invoked to handle an incoming network connection.
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.I Exportfs
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creates a new name space for each connection, using
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.B /lib/namespace
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by default (see
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.IR namespace (6)).
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.TP
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.B -B \fIaddress
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Dial
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.IR address ,
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authenticate as a
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.I p9any
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client, and then
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serve that network connection.
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Requires setting the root of the name space with
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.B -r
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or
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.BR -s .
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The remote system should run
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.B import
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.B -B
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to handle the call.
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See
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.IR import (4)
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for an example.
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.TP
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.B -e '\fIenc auth\fL'
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Set the encryption and authentication algorithms to use for
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encrypting the wire traffic (see
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.IR ssl (3)).
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The defaults are
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.B rc4_256
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and
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.BR sha1 .
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.TP
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.B -N \fInsfile
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Serve the name space described by
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.IR nsfile .
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.TP
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.B -n
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Disallow mounts by user
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.BR none .
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.EE
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.SH SOURCE
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.B /sys/src/cmd/exportfs/oexportfs.c
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.SH SEE ALSO
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.IR dial (2),
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.IR exportfs (4),
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.IR import (4),
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.IR aan (8),
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.IR listen (8)
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