Re: LKMPG example program not working !!

[Karthik M <k_mohanas@yahoo.com>]

hi,

Thanx for replying ..

I could'nt get past the errors caused due to the
proc_register and proc_unregister.

The warnings during the compilation are:

-----snip------

# gcc -D__KERNEL__ -DMODULE -DLINUX -Wall
-I/usr/src/linux/include -O2 -c procfs.c 

In file included from
/usr/src/linux/include/linux/fs.h:19,
                 from
/usr/src/linux/include/linux/capability.h:17,
                 from
/usr/src/linux/include/linux/binfmts.h:5,
                 from
/usr/src/linux/include/linux/sched.h:9,
                 from
/usr/src/linux/include/linux/mm.h:4,
                 from
/usr/src/linux/include/linux/slab.h:14,
                 from
/usr/src/linux/include/linux/proc_fs.h:5,
                 from procfs.c:15:
/usr/src/linux/include/linux/dcache.h: In function
`dget':
/usr/src/linux/include/linux/dcache.h:244: warning:
implicit declaration of function
`printk_Rsmp_1b7d4074'
procfs.c: In function `module_output':
procfs.c:56: warning: implicit declaration of function
`sprintf_Rsmp_3c2c5af5'
procfs.c: In function `init_module':
procfs.c:156: warning: implicit declaration of
function `proc_register_dynamic'
procfs.c: In function `cleanup_module':
procfs.c:162: warning: implicit declaration of
function `proc_unregister'
procfs.c: At top level:
procfs.c:122: warning: `File_Ops_4_Our_Proc_File'
defined but not used
#

-----snip------

the file_operations and inode_operations struct are:

----snip----
static struct file_operations File_Ops_4_Our_Proc_File
=
  {
    read:module_output,
    write:module_input,
    open:module_open,
    release:module_close,
  };


static struct inode_operations
Inode_Ops_4_Our_Proc_File =
  {
static struct file_operations File_Ops_4_Our_Proc_File
=
  {
    read:module_output,
    write:module_input,
    open:module_open,
    release:module_close,
  };


static struct inode_operations
Inode_Ops_4_Our_Proc_File =
  {
    //&File_Ops_4_Our_Proc_File,
    permission:module_permission
  };
----snip----

The commenting out of &File_Ops_4_Our_Proc_File is
causing the warning on line 122 in compilation. The
same problem remains : I am not able to load the
module.

I am not able to find any extern declarations in the
files that have used proc_register() &
proc_unregister().

Thanx for the Linux Cross-Reference link. That was
really useful to go thru the source code instead of
grep.

TIA

karthik

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