Mac to Mac file sharing - file permissions problem upon newly created files

Question

Hi all,
At home I have two iMac's both running Snow Leopard.
iMac A/Users/*1 is sharing his iMac A/Users/*1/Documents folder.
The sharing & permissions - preferences of this folder and the files inside this folder are:
'*1' : (the iMac A's main user account) : Read & Write
'share' : (a Sharing Only account, set up from iMac A) : Read & Write
everyone : : No Access
iMac B/Users/*2 is able to read & write to this folder because he is connected with iMac A as 'share'.
So far so good. iMac A/Users/*1 can read & write to his own Documents folder
and so can iMac B/Users/*2 because he is connected to iMac A as 'share'.
But: this only applies to the folders and files that are _already in_ the iMac A/Users/*1/Documents folder,
because I once changed the sharing & permissions -permissions of iMac A/Users/*1/Documents as mentioned above and executed 'Apply to enclosed Items...'.
So the problem is: when I create a new file or folder on iMac A/Users/*1 or on
iMac B/Users/*2 and put it in iMac A/Users/*1/Documents, this new file or folder will only
have the standard sharing & permissions - preferences of any newly created file or folder
on the iMac X/Users/*Y it was created. The problem is those sharing & permissions - preferences
will not let the other iMac X"/Users/*Y" Read & Write to this new file or folder but only let himself
Read & Write. Following, the other iMac X"/Users/*Y" will only be able to Read the newly created
file or folder, because the standard standard sharing & permissions - preferences on
iMac A/Users/*1 as well as on iMac B/Users/*2 are the following:
'*Y' : (the iMac X's main user account) : Read & Write
staff : (Administrator accounts on iMac X) : Read only
everyone : : Read only
A pretty manual fix to this problem is walking to iMacX" and changing the
sharing & permissions - preferences of the newly created file or folder so that iMacX"
will also be able to Read & Write this newly created file or folder.
Does anyone know a better fix for my problem? Basicly I want to have Read & Write
sharing & permissions on the newly created file or folder for both iMac's,
not only the for the file or folder creator's iMac. And this without having to change
sharing & permissions - preferences of this newly created file or folder manually
each time.
Thanks in advance,
Vincent Verheyen.

Answer 1

Hi all,
I have found a thread wich i think also handles about my problem.
The standard sharing & permissions - preferences or privileges
can be changed apparently, this seems to have got something to do
with umask and changing this umask. The adress is the following:
*http://www.macosxhints.com/article.php?story=20031211073631814*
Other ways to change the above-mentioned umask may be
applications like SharePoints, TinkerTool or BatChMod.
All of them are also mentioned in the above-mentioned thread.
I haven't executed the solution as mentioned in the above-mentioned
thread yet, replies to the thread speak about insecurity and failures.
Further more I haven't found any other solutions to my problem,
so any help is still greatly appreciated.
Thanks in advance,
Vincent Verheyen.