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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