159 lines
3 KiB
Text
159 lines
3 KiB
Text
.TH SSHFS 4
|
|
.SH NAME
|
|
sshfs - secure file transfer protocol client
|
|
.SH SYNOPSIS
|
|
.B sshfs
|
|
[
|
|
.B -abdRUGM
|
|
]
|
|
[
|
|
.B -s
|
|
.I service
|
|
]
|
|
[
|
|
.B -m
|
|
.I mtpt
|
|
]
|
|
[
|
|
.B -r
|
|
.I root
|
|
]
|
|
[
|
|
.B -u
|
|
.I uidfile
|
|
]
|
|
[
|
|
.B -g
|
|
.I gidfile
|
|
]
|
|
.IP ""
|
|
[
|
|
.B --
|
|
.I ssh-options
|
|
]
|
|
.I [user@]host
|
|
|
|
|
.B -c
|
|
.I cmdline
|
|
|
|
|
.B -p
|
|
.SH DESCRIPTION
|
|
.I Sshfs
|
|
makes the file system on a remote host accessible through the secure file transfer protocol (SFTP).
|
|
By default
|
|
.I sshfs
|
|
launches
|
|
.IR ssh (1)
|
|
to connect to
|
|
.I host
|
|
and log in as
|
|
.I user.
|
|
If
|
|
.B -c
|
|
is specified,
|
|
.I sshfs
|
|
will instead launch the command specified by
|
|
.IR cmdline
|
|
and if
|
|
.B -p
|
|
is specified,
|
|
.I sshfs
|
|
communicates with an SFTP server via stdin and stdout.
|
|
.PP
|
|
Unless
|
|
.B -M
|
|
is specified,
|
|
.I sshfs
|
|
will mount itself at the mountpoint specified by
|
|
.IR mtpt ,
|
|
or at
|
|
.B /n/ssh
|
|
if
|
|
.B -m
|
|
is not specified.
|
|
The default mount options are equivalent to calling
|
|
.I mount
|
|
(see
|
|
.IR bind (1))
|
|
with
|
|
.BR -c .
|
|
.B -a
|
|
and
|
|
.B -b
|
|
have the same function as they do with
|
|
.IR mount .
|
|
.PP
|
|
If
|
|
.B -s
|
|
is specified,
|
|
it will post itself in
|
|
.IR srv (3)
|
|
with service name
|
|
.IR service .
|
|
If the service file is mounted, the attach name (the third argument to
|
|
.IR mount (1))
|
|
can be used to specify which directory on the remote host will be mounted.
|
|
.PP
|
|
By default, relative paths are assumed relative to the user's home directory.
|
|
The
|
|
.B -r
|
|
option can be used to specify an alternative base for relative paths.
|
|
The initial mount at
|
|
.B -m
|
|
also uses this directory.
|
|
If an attach name starts with
|
|
.BR ~ ,
|
|
the user's home directory is substituted for
|
|
.BR ~ .
|
|
.PP
|
|
Since the only supported version 3 of the SFTP protocol has no way to look up numeric user and group IDs,
|
|
.I sshfs
|
|
will read the files
|
|
.B /etc/passwd
|
|
and
|
|
.B /etc/group
|
|
on the remote host to create a lookup table for them.
|
|
The location of these files can be changed with
|
|
.B -u
|
|
and
|
|
.BR -g,
|
|
whereas
|
|
.B -U
|
|
and
|
|
.B -G
|
|
will inhibit reading them entirely.
|
|
If these files cannot be accessed for any reason, numeric IDs simply remain untranslated.
|
|
.PP
|
|
Further options:
|
|
.TP
|
|
-R
|
|
Read access only.
|
|
.TP
|
|
-d
|
|
Enable debugging output.
|
|
.SH SOURCE
|
|
.B /sys/src/cmd/sshfs.c
|
|
.SH BUGS
|
|
Currently only version 3 of the SFTP protocol is supported (which is the most common version in use and the latest supported by openssh).
|
|
Unfortunately there are problems with the version 3 specification and the code relies on openssh-specific behaviour in some corner cases.
|
|
Version 4 and later also handle uid/gid translation at the server end which would remove the ugly dependence on reading remote configuration files.
|
|
.PP
|
|
Some 9P operations that should be atomic are not atomic because they do not map 1:1 to SFTP operations.
|
|
In particular there is no guarantee that a failed
|
|
.I wstat
|
|
(see
|
|
.IR stat (5))
|
|
did not change some of the fields.
|
|
.PP
|
|
The code is naive about links and assumes files with distinct names to be distinct, assigning them different QIDs.
|
|
.PP
|
|
File names with null bytes in them will confuse
|
|
.I sshfs.
|
|
.I Sshfs
|
|
should probably escape them, as well as control characters that might confuse other software.
|
|
.SH HISTORY
|
|
.I
|
|
Sshfs
|
|
first appeared in 9front (Apr, 2017).
|
|
.SH SEE ALSO
|
|
.IR ssh (1)
|