Compilation Error of a Dynamic Module

[Linux Maverick]

Hi All,

I am trying to compile a dynamic module shown below that creates a readable procs entry. I invoke gcc as follows.

gcc -Wall -o2 -DMODULE -D_KERNEL_ -DLINUX -I
/lib/modules/`uname -r`/build/modules -c fMod3.c

and I get a whole bunch of errors with procfs.h.

/lib/modules/2.4.18-4GB/build/include/linux/proc_fs.h:47: parse error before `off_t'
/lib/modules/2.4.18-4GB/build/include/linux/proc_fs.h:50: warning: `struct
file' declared inside parameter list
............................................................................
............................................................
............................................................and many more.

Could any of you offer me any hints to resolve this problem? I am using Kernel 2.4.18-4GB.

Thanks in advance for any feedback. Please see the source below.

Linux Maverick
-----------------------------------------------

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/sched.h>
#include <asm/uaccess.h>

#define MODULE_VERSION "1.0"
#define MODULE_NAME "My_procfs_example"
#define FOOBAR_LEN 8

struct fb_data_t
{
char name[FOOBAR_LEN + 1];
char value[FOOBAR_LEN + 1];
};

static struct proc_dir_entry *example_dir,*foo_file;
struct fb_data_t foo_data;

static int proc_read_foo(char *page,char **start,off_t off,int count,int
*eof,void *data)
{
int len;
struct fb_data_t *fb_data = (struct fb_data_t *)data;
MOD_INC_USE_COUNT;
len = sprintf(page, "%s = '%s'\n",fb_data->name, fb_data->value);
MOD_DEC_USE_COUNT;
return len;
}

static int __init init_procfs_example(void)
{
int rv = 0;
/* create directory */
example_dir = proc_mkdir(MODULE_NAME, NULL);
if(example_dir == NULL)
{
rv = -ENOMEM;
goto out;
}

example_dir->owner = THIS_MODULE;

foo_file = create_proc_entry("foo", 0644, example_dir);
if(foo_file == NULL)
{
rv = -ENOMEM;
goto no_foo;
}
strcpy(foo_data.name, "foo");
strcpy(foo_data.value, "foo");
foo_file->data = &foo_data;
foo_file->read_proc = proc_read_foo;
foo_file->write_proc = NULL;
foo_file->owner = THIS_MODULE;

printk(KERN_INFO "%s %s initialised\n",MODULE_NAME, MODULE_VERSION);
return 0;

no_foo:
remove_proc_entry("jiffies", example_dir);
out:
return rv;
}

static void __exit cleanup_procfs_example(void)
{
remove_proc_entry("foo", example_dir);
remove_proc_entry(MODULE_NAME, NULL);
printk(KERN_INFO "%s %s removed\n",MODULE_NAME, MODULE_VERSION);
}

module_init(init_procfs_example);
module_exit(cleanup_procfs_example);

MODULE_AUTHOR("XYZ");
MODULE_DESCRIPTION("A procfs example");

EXPORT_NO_SYMBOLS