Re: sharing one r/w unix filesystem between different machines and users

2011-09-05 Thread Osamu Aoki
On Fri, Aug 26, 2011 at 12:21:18AM +0200, Christoph Groth wrote: Hi, I'd like to share the data saved on an external USB drive between different (GNU/Linux) machines, each having different users. Each user should be able to mount the drive and read and write any files as he or she pleases.

Re: sharing one r/w unix filesystem between different machines and users

2011-09-04 Thread Jörg-Volker Peetz
Putting a directory like /tmp (with the same permissions on the USB drive) would allow any user to create files and directories there. If this user sets permissions for own files to allow others to read and write, any other user is able to overwrite the contents of this files. Any user can mount

Re: sharing one r/w unix filesystem between different machines and users

2011-09-03 Thread Christoph Groth
Christoph Groth c...@falma.de writes: Lars Maes lars.m...@gmail.com writes: Why not use an UDF filesystem, that is used on DVD discs? Indeed, this seems to work well. It is a better option than VFAT and NTFS. I didn't know that the filesystem of DVDs is also usable for rewriteable media,

Re: sharing one r/w unix filesystem between different machines and users

2011-08-30 Thread Christoph Groth
Lars Maes lars.m...@gmail.com writes: Why not use an UDF filesystem, that is used on DVD discs? Indeed, this seems to work well. It is a better option than VFAT and NTFS. I didn't know that the filesystem of DVDs is also usable for rewriteable media, but I have learned that UDF has been

Re: sharing one r/w unix filesystem between different machines and users

2011-08-29 Thread Robert Blair Mason Jr.
On Sun, 28 Aug 2011 19:18:35 -0400 shawn wilson ag4ve...@gmail.com wrote: I don't understand what is hard about this. I mean if you don't care about security, just make sure the mount has a umask of 770 (or whatever) and make an export, reload exports, and mount it from wherever you want.

Re: sharing one r/w unix filesystem between different machines and users

2011-08-28 Thread Robert Blair Mason Jr.
On Fri, 26 Aug 2011 08:41:35 +0200 Christoph Groth c...@falma.de wrote: Robert Blair Mason Jr. r...@verizon.net writes: Christoph Groth c...@falma.de wrote: Will something like the following work? This works on any filesystem using standard unix permissions (such as ext*, ufs,

Re: sharing one r/w unix filesystem between different machines and users

2011-08-28 Thread Robert Blair Mason Jr.
On Sun, 28 Aug 2011 10:01:05 -0400 Robert Blair Mason Jr. r...@verizon.net wrote: I understand OSX doesn't help anyone here... perhaps someone could request an implementation of this command in the mount source code? It seems simple - just check if the filesystem has noowners set and if so,

Re: sharing one r/w unix filesystem between different machines and users

2011-08-28 Thread shawn wilson
I don't understand what is hard about this. I mean if you don't care about security, just make sure the mount has a umask of 770 (or whatever) and make an export, reload exports, and mount it from wherever you want. What am I missing? Also, if you want to call osx Unix, call it broken unix. Most

Re: sharing one r/w unix filesystem between different machines and users

2011-08-26 Thread Christoph Groth
Robert Blair Mason Jr. r...@verizon.net writes: Christoph Groth c...@falma.de wrote: Blair Mason r...@verizon.net writes: Permission schemes on removable media are not too powerful annyway, as anyone with root on any machine can change them... my $0.02. Exactly -- I wonder whether

Re: sharing one r/w unix filesystem between different machines and users

2011-08-26 Thread Christoph Groth
shawn wilson ag4ve...@gmail.com writes: On Thu, Aug 25, 2011 at 19:02, Christoph Groth c...@falma.de wrote: Blair Mason r...@verizon.net writes: Permission schemes on removable media are not too powerful annyway, as anyone with root on any machine can change them... my $0.02. Exactly -- I

Re: sharing one r/w unix filesystem between different machines and users

2011-08-26 Thread Lars Maes
Hi Christoph, Why not use an UDF filesystem, that is used on DVD discs? Christoph Groth schreef in bericht news:87hb55ku8x@falma.de... Hi, I'd like to share the data saved on an external USB drive between different (GNU/Linux) machines, each having different users. Each user should

sharing one r/w unix filesystem between different machines and users

2011-08-25 Thread Christoph Groth
Hi, I'd like to share the data saved on an external USB drive between different (GNU/Linux) machines, each having different users. Each user should be able to mount the drive and read and write any files as he or she pleases. The users aren't necessary root themselves. Is there a way to

Re: sharing one r/w unix filesystem between different machines and users

2011-08-25 Thread Blair Mason
Can you use the other permission set? Or does it need to be specifically those users only? Permission schemes on removable media are not too powerful annyway, as anyone with root on any machine can change them... my $0.02. -- rbmj

Re: sharing one r/w unix filesystem between different machines and users

2011-08-25 Thread Christoph Groth
Blair Mason r...@verizon.net writes: Permission schemes on removable media are not too powerful annyway, as anyone with root on any machine can change them... my $0.02. Exactly -- I wonder whether there are any decent (modern features, public specification, nice free implementation, etc.)

Re: sharing one r/w unix filesystem between different machines and users

2011-08-25 Thread Robert Blair Mason Jr.
On Fri, 26 Aug 2011 01:02:57 +0200 Christoph Groth c...@falma.de wrote: Blair Mason r...@verizon.net writes: Permission schemes on removable media are not too powerful annyway, as anyone with root on any machine can change them... my $0.02. Exactly -- I wonder whether there are any

Re: sharing one r/w unix filesystem between different machines and users

2011-08-25 Thread shawn wilson
On Thu, Aug 25, 2011 at 19:02, Christoph Groth c...@falma.de wrote: Blair Mason r...@verizon.net writes: Permission schemes on removable media are not too powerful annyway, as anyone with root on any machine can change them... my $0.02. Exactly -- I wonder whether there are any decent