is a daemon that serves incoming DAP (Data Access protocol) connections from
remote systems. It enables transparent file access to files from OpenVMS
machines using standard DECnet syntax.
It should be started at system boot time (after DECnet has been started) and
must be run as root.
The file names output by
will adapt depending on the sytax of files that are requested
of it. If VMS-style filenames are requested then VMS-style filenames will
be returned. If Unix-style filenames are requested then Unix-style (native)
filenames will be returned. Note that to force fal to diplay the contents of
a directory with Unix-style names the name must end in a slash or have some
form of wildcard character in it.
When returning VMS-style filenames, all names will be converted to upper case,
directories will have .DIR appended to them and all filenames will have a
version number of 1.
In addition fal will construct a volume and directory syntax for the directory
that will look familiar to VMS users. Of course it also understands this
syntax when files and directories are requested of it. One of the problems with
this is that Unix filenames with non-VMS syntax (eg double dots or "funny"
characters) or files with uppercase letter in their names will not be accessible
from VMS using VMS syntax. You must use Unix syntax to access these files through
The options below affect the behaviour of fal. If you are using
then these options should be specified in the
By default all files sent by fal will be sent in STREAMLF format. This is
configurable by the many command-line switches detailed below.
Set logging options. The following are available:
Log to /dev/mono. (only useful if you have my mono monitor driver or mdacon
and a second monitor)
Log to stderr. Use this for debugging or testing combined with
Log to syslog(3). This is the default if no options are given.
Set algorithm for automatically selecting file types.
-ag Guess file type based on first few bytes -ae Check file extension against a table
By default all files will be sent/received as STREAMLF
Specify the filename used to check file extensions. Only valid with
The format if the file is simple:
extension <b/r> <block size>.
In fact, 'r' is more of a comment than an instruction but it may be
used in future to support proper variable-length record files.
By default an internal table is used with some common file extensions. It is
# VMS types
.bck b 32256
.save b 8192
.exe b 512
.zip b 512
.tar b 10240
.gz b 512
.tgz b 512
.bz2 b 512
# End of file
Enable users to override the two above options with a .fal_auto file in her/his
home directory. This file should contain a single word:
and a .fal_auto file takes effect even if no
option is present.
Use the meta-file directory (normally named .fal) to store file attributes. Metafiles
will override any guessed or checked file attributes.
Instruct FAL for look for .$ADF$ files created by the NFS Client in TCP/IP
for VMS V5.0+ and use them to get file attributes. This option can be used
flags in which case a .$ADF$ takes precedence over a fal metafile or a guessed
-r <virtual root>
Run FAL in a "virtual root". All file accesses will be done below this directory
rather than the normal root filesystem. ie access for "/" or "SYSDISK:"
will start at the specified directory. Requests for ".." will be refused.
NOTE: This is not a chroot, fal still runs in the normal filesystem. also note
that this will lose the ability to access users home directories: all users doing
a "DIR LINUX::*.*" from VMS will see the virtual root instead.
Don't fork and run the background. Use this for debugging.
Verbose. The more of these there are the more verbose fal will be. Don't use
more than one for normal operation because it will seriously impair