Re: Has it been done: User Script File System?
Hi! > Is there any filesystem in Linux that uses user scripts/executables to > implement the various function calls? What I'm thinking of is something > along the lines of a file system module that, when it receives a call > from VFS, passes the information out to a user-mode daemon which could > then run scripts or executables to answer the question. The daemon > would then return the answer to the module, and the module would answer > VFS. Take a look at uservfs.sourceforge.net. Its extfs module is basically what you want. zipfs is already implemented using script... Pavel -- Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt, details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Has it been done: User Script File System?
Hi! Is there any filesystem in Linux that uses user scripts/executables to implement the various function calls? What I'm thinking of is something along the lines of a file system module that, when it receives a call from VFS, passes the information out to a user-mode daemon which could then run scripts or executables to answer the question. The daemon would then return the answer to the module, and the module would answer VFS. Take a look at uservfs.sourceforge.net. Its extfs module is basically what you want. zipfs is already implemented using script... Pavel -- Philips Velo 1: 1x4x8, 300gram, 60, 12MB, 40bogomips, linux, mutt, details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html. - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Has it been done: User Script File System?
Quoting Russ Lewis <[EMAIL PROTECTED]>: > mount -t userfs /etc/myfs.conf /myfs I did this a while ago: I wrote userfs which allowed arbirary filesystems to be implemented in user space. One of these was a filesystem which allowed you to embed scripts in symlinks, such that stdout of the script was read as the contents of the file. userfs has fallen into disrepair lately, but there are other projects with similar goals. See http://www.goop.org/~jeremy/userfs/. J - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Has it been done: User Script File System?
[EMAIL PROTECTED] (Russ Lewis) writes: > Is there any filesystem in Linux that uses user scripts/executables to > implement the various function calls? What I'm thinking of is something It has been done before. http://www.ibiblio.org/pub/Linux/ALPHA/userfs/userfs.lsm describes a patch/kernel module for kernel 1.2.10, 1.3.13 and 2.0.30. I vaguely remember that some more resen suggestion was to implement it with the some usper-space nfs-deamon. -- hash-bang-slash-bin-slash-bash - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Has it been done: User Script File System?
[EMAIL PROTECTED] said: > Is there any filesystem in Linux that uses user scripts/executables to > implement the various function calls? http://uservfs.sourceforge.net Also, have a look at the hostfs filesystem in UML. It implements a virtual filesystem which provides access to the host filesystems from inside the virtual machine. The userspace side of it is basically trivial to implement and can be used to provide filesystem access to anything on the host that can be made to look like a filesystem. See http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/user-mode-linux/linux/arch/u m/fs/hostfs/hostfs_user.c?rev=1.11=text/vnd.viewcvs-markup for the interface that you'd have to implement. Jeff - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Has it been done: User Script File System?
Is there any filesystem in Linux that uses user scripts/executables to implement the various function calls? What I'm thinking of is something along the lines of a file system module that, when it receives a call from VFS, passes the information out to a user-mode daemon which could then run scripts or executables to answer the question. The daemon would then return the answer to the module, and the module would answer VFS. The reason I'm wondering is that I have a lot of brainstorms about things that might be cool to implement as filesystems, but I don't want to take the time to have to implement a full filesystem for each (especially considering the number of bugs and kernel panics I'm likely to encounter in the process). What I'd really like to do is something like this: mount -t userfs /etc/myfs.conf /myfs Where /etc/myfs.conf would have something like this: lookup: /usr/bin/myfslookup open: /usr/bin/myfsopen etc... I know that it would be very slow, and might require some modifications to VFS to make it work (in addition to the module I'd have to write), but it would be really nice to be able to throw together a very simple utility filesystem without having to worry about crashing the kernel. Does Linux have anything even remotely like this? If not, I might (if I can spare the time) play around with something like this of my own. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Has it been done: User Script File System?
[EMAIL PROTECTED] said: Is there any filesystem in Linux that uses user scripts/executables to implement the various function calls? http://uservfs.sourceforge.net Also, have a look at the hostfs filesystem in UML. It implements a virtual filesystem which provides access to the host filesystems from inside the virtual machine. The userspace side of it is basically trivial to implement and can be used to provide filesystem access to anything on the host that can be made to look like a filesystem. See http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/user-mode-linux/linux/arch/u m/fs/hostfs/hostfs_user.c?rev=1.11content-type=text/vnd.viewcvs-markup for the interface that you'd have to implement. Jeff - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: Has it been done: User Script File System?
[EMAIL PROTECTED] (Russ Lewis) writes: Is there any filesystem in Linux that uses user scripts/executables to implement the various function calls? What I'm thinking of is something It has been done before. http://www.ibiblio.org/pub/Linux/ALPHA/userfs/userfs.lsm describes a patch/kernel module for kernel 1.2.10, 1.3.13 and 2.0.30. I vaguely remember that some more resen suggestion was to implement it with the some usper-space nfs-deamon. -- hash-bang-slash-bin-slash-bash - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
