sfsrwsd_config - file server configuration

Hostname name

Set the Location part of the server's self-certifying pathname. The default is the current host's fully-qualified hostname.

Keyfile path

Tells sfsrwsd to look for its private key in file path. The default is sfs_host_key. SFS looks for file names that do not start with / in /etc/sfs, or whatever directory you specified if you used the -with-etcdir option to configure ().

Export local-directory sfs-name [R|W]

Tells sfsrwsd to export local-directory, giving it the name sfs-name with respect to the server's self-certifying pathname. Appending R to an export directive gives anonymous users read-only access to the file system under the anonymous user group IDs specified in sfs_config. (See the description of the anonuser directive in the sfs_config man page for more information .) Appending W gives anonymous users both read and write access. See the Quick server setup section of the SFS info pages for an example of the Export directive. There is almost no reason to use the W flag. The R flag lets anyone on the Internet issue NFS calls to your kernel as the anonymous user. SFS filters these calls; it makes sure that they operate on files covered by the export directive, and it blocks any calls that would modify the file system. This approach is safe given a perfect NFS3 implementation. If, however, there are bugs in your NFS code, attackers may exploit them if you have the R optionprobably just crashing your server but possibly doing worse.

LeaseTime seconds

Specifies the amount of time for which SFS clients can cache file attributes. During this period, if a file is modified, the server will call back to the client to let it know that the file's attributes have changed. Unfortunately, if a file is modified not through SFS (e.g., through the local file system interface on the server), the server may not realize the attributes have changed, and clients may see stale data for the lease period. The default lease term is 60 seconds.

/etc/sfs/sfsrwsd_config

/usr/local/share/sfs/sfsrwsd_config

file server configuration

(Files in /etc/sfs supersede default versions in /usr/local/share/sfs.)

dirsearch(1), newaid(1), rex(1), sfsagent(1), sfskey(1), ssu(1), sfs_config(5), sfs_hosts(5), sfs_srp_params(5), sfs_users(5), sfsauthd_config(5), sfscd_config(5), sfsrosd_config(5), sfssd_config(5), sfs_environ(7), funmount(8), nfsmounter(8), sfsauthd(8), sfscd(8), sfsrosd(8), sfsrwcd(8), sfsrwsd(8), sfssd(8), vidb(8)

The full documentation for SFS is maintained as a Texinfo manual. If the info and SFS programs are properly installed at your site, the command info SFS should give you access to the complete manual.

For updates, documentation, and software distribution, please see the SFS website at http://www.fs.net/.

sfsdev@redlab.lcs.mit.edu