files_struct->max_fds is 0

[Jason Stredwick <stredwic@msu.edu>]

I have been writing a kernel module that intercepts the socket system 
call.  I made my own versions of the SYS_SENDTO functions by making 
copies of them from socket.c.  Unfortunately, I seem to be stuck getting 
the inode that corresponds with the file descriptor sent in.  Normally, 
it uses fget(fd), but I wasn't getting back anything valid.  I checked 
that function and saw it uses fcheck(fd) which checks 
current->files->max_fds.  I think the problem is here in that max_fds is 
0.  I have done some test on current, and pid, uid, etc seem ok, but all 
the information in current->files seems to be the default(initialized) data.

Any help would be appreciated.
Jason Stredwick

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