339 lines
4.9 KiB
Plaintext
339 lines
4.9 KiB
Plaintext
.TH SRV 4
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.SH NAME
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srv, srvold9p, 9fs, srvssh \- start network file service
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.SH SYNOPSIS
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.B srv
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[
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.B -abcCemnq
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] [
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.B -s
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.I seconds
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]
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.RI [ net !] system\c
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.RI [! service ]
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[
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.I srvname
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[
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.I mtpt
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] ]
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.PP
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.B srvssh
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[
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.B -r
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]
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[
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.B -R
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]
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[
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.B -s
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]
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[
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.B -u
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.I u9fspath
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]
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.I system
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[
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.I srvname
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[
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.I mtpt
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] ]
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.PP
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.B 9fs
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.RI [ net !] system
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.RI [ mountpoint ]
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.PP
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.in +0.5i
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.ti -0.5i
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.B srvold9p
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[
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.B -abcCdF
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] [
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.B -p
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.I servicename
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] [
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.B -s
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.B -m
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.I mountpoint
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] [
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.B -u
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.I user
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] [
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.B -x
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.I command
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.B -n
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.I network-addr
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.B -f
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.I file
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]
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.br
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.in -0.5i
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.SH DESCRIPTION
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.I Srv
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dials the given machine and initializes the connection to serve the
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9P protocol.
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By default, it connects to the
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.L 9fs
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(9P)
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service, which for TCP is port 564.
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It then creates in
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.B /srv
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a file named
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.IR srvname .
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Users can then
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.B mount
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(see
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.IR bind (1))
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the service, typically on a name in
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.BR /n ,
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to access the files provided by the remote machine.
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If
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.I srvname
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is omitted, the first argument to
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.I srv
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is used.
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Option
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.B m
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directs
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.I srv
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to mount the service on
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.BI /n/ system
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or onto
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.I mtpt
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if it is given.
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Option
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.B q
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suppresses complaints if the
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.B /srv
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file already exists.
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The
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.BR a ,
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.BR b ,
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.BR c ,
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.BR C ,
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and
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.B n
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options are used to control the mount flags as in
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.I mount
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(see
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.IR bind (1)).
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The
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.B e
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option causes
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.I srv
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to treat
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.I system
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as a shell command to be executed rather than
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an address to be dialed.
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The
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.B s
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option causes
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.I srv
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to sleep for the specified number of seconds
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after establishing the connection
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before posting and mounting it.
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This is sometimes needed by
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.IR srvssh .
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.PP
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The specified
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.I service
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must serve 9P. Usually
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.I service
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can be omitted; when calling some
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non-Plan-9 systems, a
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.I service
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such as
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.B u9fs
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must be mentioned explicitly.
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.PP
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The
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.I 9fs
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command does the
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.I srv
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and the
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.I mount
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necessary to make available the files of
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.I system
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on network
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.IR net .
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The files are mounted on
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.IR mountpoint ,
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if given;
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otherwise they are mounted on
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.BI /n/ system\f1.
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If
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.I system
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contains
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.L /
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characters, only the last element of
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.I system
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is used in the
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.B /n
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name.
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.PP
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.I 9fs
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recognizes some special names, such as
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.B dump
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to make the dump file system available on
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.BR /n/dump .
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.I 9fs
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is an
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.IR rc (1)
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script; examine it to see what local conventions apply.
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.PP
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.I Srvssh
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is an
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.IR rc (1)
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command that
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connects to a remote Unix system via
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.IR ssh (1)
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and starts
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.IR u9fs (4).
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The
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.B -u
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option specifies the path to the
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.B u9fs
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binary on the remote system.
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(By default, an unrooted path of
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.B u9fs
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is used; if the binary is in the path of
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the remote SSH server, you don't need the
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.B -u
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option.)
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For information about the other options,
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see the introductory comment in
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.BR /rc/bin/srvssh .
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The arguments are the same as
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.IR srv .
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.PP
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.I Srvold9p
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is a compatibilty hack to allow Fourth Edition Plan 9 systems
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to connect to older 9P servers.
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It functions as a variant of
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.I srv
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that performs a version translation on the 9P messages on the underlying connection.
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Some of its options are the same as those of
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.IR srv ;
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the special ones are:
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.TF "-x commandxx"
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.PD
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.TP
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.B -d
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Enable debugging.
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.TP
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.B -F
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Insert a special (internal) filter process to the connection to maintain
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message boundaries; usually only needed on TCP connections.
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.TP
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.BI -p\ servicename
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Post the service under
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.IR srv (3)
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as
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.BI /srv/ servicename\f1.
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.TP
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.BI -u\ user
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When connecting to the remote server, log in as
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.IR user .
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Since
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.I srvold9p
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does no authentication, and since new kernels cannot authenticate to
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old services, the likeliest value of
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.I user
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is
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.BR none .
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.TP
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.BI -x\ command
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Run
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.I command
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and use its standard input and output as the 9P service connection.
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If the
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.I command
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string contains blanks, it should be quoted.
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.TP
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.BI -n\ network-addr
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Dial
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.I network-addr
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to establish the connection.
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.TP
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.BI -f\ file
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Use
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.I file
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(typically an existing
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.IR srv (3)
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file) as the connection.
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.PP
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.I Srvold9p
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is run automatically when a
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.IR cpu (1)
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call is received on the service port for the old protocol.
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.SH EXAMPLES
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To see kremvax's and deepthought's files in
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.B /n/kremvax
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and
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.BR /n/deepthought :
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.IP
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.EX
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9fs kremvax
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9fs hhgttg /n/deepthought
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.EE
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.PP
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To mount as user
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.B none
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a connection to an older server kgbsun:
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.IP
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.EX
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srvold9p -u none -m /n/kgbsun -p kgbsun -n il!kgbsun
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.EE
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.PP
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Other windows may then mount the connection directly:
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.IP
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.EX
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mount /srv/kgbsun /n/kgbsun
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.EE
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.PP
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To connect to an instance of the Unix server
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.IR u9fs (4)
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started via
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.IR ssh (1):
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.IP
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.EX
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srvssh unix
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.EE
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.SH FILES
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.TF /srv/*
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.TP
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.B /srv/*
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ports to file systems and servers posted by
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.I srv
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and
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.I 9fs
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.SH SOURCE
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.B /sys/src/cmd/srv.c
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.br
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.B /rc/bin/9fs
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.br
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.B /rc/bin/srvssh
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.br
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.B /sys/src/cmd/srvold9p
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.SH "SEE ALSO"
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.IR bind (1),
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.IR auth (2),
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.IR dial (2),
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.IR srv (3),
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.IR exportfs (4),
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.IR import (4),
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.IR ftpfs (4),
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.IR u9fs (4)
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.SH BUGS
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.I Srv
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does not explicitly report failures of
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.I auth_proxy
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(see
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.IR auth (2));
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.I mount
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(see
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.IR bind (1))
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does.
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