xffm - anomaly + mounting ISO fs

[edscott wilson garcia]

On Mon, 2003-09-22 at 16:16, Ric wrote:
> Hey:
> 
> There is an anomaly in xffm for the ISO filetype.  If one selects an  *.iso 
> file and right clicks, the menu has "Execute <file_name>.iso" under the "Open"
> category.  I don't know what execute is supposed to do with an *.iso but one
> cannot 'exec' a filesystem. 

No anomaly here. You most probably have the exec bit set for the file.
Whenever the exec bit is set for any file, the popup will always show
the option "Execute foo.xxx". If no program is associated, double click
will execute. If a program is associated it will take preference over
execute.

> 
> In its place I suggest  " Mount <file_name>.iso ".  In Linux, this can be
> accomplished with the mount ... -o loop ...  command.   For example, to mount
> the currently highlighted file in the emelfm file manager at the existing but
> unmounted directory(mount point) named " /mnt/ISO " one can use the user
> command:
> 
> mount %f /mnt/ISO -t iso9660 -o loop=/dev/loop3

Currently .iso files have "cdrecord" and "burncd" associated as default
but they only show if either program is installed on your system. This
is to make cd recording easy since the popup for directories has a
"create isofs" option. 

I had not thought about mounting the isofs. 

> 
> The xffm works a little differently so I do not know if you can provide a
> pop-up for the user to enter the mount point.  The mount point has to be an
> existing directory that is not mounted, else mount wigs-out.  Obviously, you
> already have a way to recognize and substitute the currently highlighted
> file(the " %f " in emelfm).

No problem asking for the mount point. The problem I see is that 
the mount -loop will not always work since the "loop" option must be
enabled in the Linux kernel and not all linux distributions do so.

The popup menu should only show commands that will work and be able to
determine this on the fly. I don't know how to figure out if the kernel
is enabled for loop mount.

regards,

Edscott
 


> 
> Once mounted, it is no different than mounting ext2, ext3 or any other
> filesystem mounted as "read only".  The user can copy, view files with any ap,
> delete make a new ISO or perform any other legal operation on the "read only"
> files.  E.g., one can open *.doc files with abiword/OOo (then maybe edit the
> file and save to another dir) or copy the entire/partial contents of the *.iso
> to another directory. Once the files are copied to a fs mounted as rw, any
> legal operation is then possible.
> The are of course different ways to implement the same function, some are
> described with  man mount  under the "Loop" section.
> A more general command format is
> 
> mount [FILE] [EXISTING UNMOUNTED DIR] -t auto -o loop
> 
> which allows auto selection of filetype and auto selection of any available
> loopback.  Perhaps needless to say but, the 'oops'  is that some loop device
> must be available. I think most systems mount a loopback device during boot,
> BICBW.
> 
> If you can exchange "Execute" for "Mount" and work out the details of getting
> the user to enter an existing unmounted directory*, it would be a nice creature
> feature for xffm.  AFAIK, no other file manager(except my emelfm) can do such
> things natively.  It has saved me many hours of anguish over the years.
> 
> I am not familiar enuf with other *nix or *BSD to know if it works the same way
> but it should be since "mount" is common on all *nix.
> 
> In any event, I think you should remove the "Execute ..." from the right click
> operation for the ISO filetype.
> 
> 
> * "/mnt/cdrom " or even " /mnt/floppy "  are usually available mount points
> that you might be able to use without asking the user for one...
> 
> =====
> Have A Great Day!
> 
> Ric
> ***
> Thought for today:
> After 10 years writing object-orientated enterprise code, one of the most 
> important things I've learned is to code as if the next guy to come along and 
> maintain your code is a short-tempered 30-stone gorilla who knows where you 
> live.
> -- Caspian Rychlik-Prince
> -- http://www.puppygames.net/articles/alienflux_postmortem.php
> 
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