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Full Discussion: Running bin file from a module
Top Forums Programming Running bin file from a module Post 302505661 by Corona688 on Thursday 17th of March 2011 02:11:14 PM
Old 03-17-2011
Quote:
Originally Posted by Chrisdot
- it is impossible to load dll library / any other library from hdd/device's flash to RAM memory and take advantage of its functions by device driver (which I used to call just 'module'), isn't it?
If by that you mean "directly run userspace code in kernel space", then yes, it's impossible. Otherwise... it really, really depends what the content of this thing is. You can't run just anything in kernel space, it has to be code compiled for your kernel's environment. It also really, really depends on how it's stored and where. The kernel's capable of reading firmware files on demand, I think, but from the sounds of it that's no file...
Quote:
- way to do that is e.g. mount (somehow) that dll / any other library as a device and use it in a way of reading / writing to that
If this dll is userspace code that won't help because it will still be userspace code and unable to operate in kernel space.
Quote:
Are there any other possibilities to solve that problem?
Extract the userspace code in userspace. Use the userspace code in userspace. Communicate data, not program instructions, in and out of the kernel.
Last edited by Corona688; 03-17-2011 at 03:16 PM..
 

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LEARN ABOUT NETBSD

rump_syspuffs

RUMP_SYSPUFFS(8)					    BSD System Manager's Manual 					  RUMP_SYSPUFFS(8)

NAME

     rump_syspuffs -- mount a puffs file server with a userspace puffs loop

SYNOPSIS

     file-system PUFFS
     pseudo-device putter

     rump_syspuffs file_server arguments

DESCRIPTION

     The rump_syspuffs utility can be used to mount any puffs(3) file server so that the requests are passed through the kernel puffs code in
     userspace as well.  Therefore the approximate callgraph looks a little like the following, where k and u denote code running in the kernel
     space and userspace, respectively: puffs vfs (k) -> libpuffs (u) -> p2k (u) -> puffs vfs (u) -> libpuffs (u) -> file server (u).  The
     response path is the same, but in reverse.

     In its current state, rump_syspuffs is most useful as a proof of concept for file system distribution and for developing and debugging the
     kernel portion of puffs.

EXAMPLES

     Mount a file system with sshfs:
	   rump_syspuffs mount_psshfs server.address /mnt

     Mount an ntfs file system using ntfs-3g (from pkgsrc/filesystems/fuse-ntfs-3g), set the default uid to 1323:
	   rump_syspuffs ntfs-3g -o uid=1323 /path/to/filesystem /mnt

SEE ALSO

     p2k(3), puffs(3), rump(3), puffs(4)

HISTORY

     The rump_syspuffs debugging utility first appeared in NetBSD 5.0.

BSD
								   June 9, 2009 							       BSD
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