Question

problems with insmod

Asked by: bcsinnovations

Hello sir, i am yogi. i am studying device driver development under linux .
i am trying to execute "insmod" command and want to insert a simple module.
i am reffering o'reilly book for device drivers under linux.
i am using Red Hat Linux version 7.3.I am not able to insert the module.
If i try to execute lsmod, its giving all the module names which are loaded.


This is my code(hello.c) following with the errors coming after executing the code:


#define MODULE
#include <linux/module.h>

init_module(void){ printk("Hello"); return 0;}
void cleanup_module(void){printk("bye");


at root : cc -c hello.c


errors:

In file included from hello.c :2:
/usr/include/linux/module.h:60: parse error before 'atomic_t'
/usr/include/linux/module.h:60: warning:no semicolon at end of struct or union
/usr/include/linux/module.h:60: warning:no semicolon at end of struct or union
/usr/include/linux/module.h:62: parse error before '}'
/usr/include/linux/module.h:62: warning :data defination has no type or storage class
/usr/include/linux/module.h:91: parse error before '}'

waiting for reply
thanking you in anticipation
Yogi

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Asked On
2005-06-15 at 21:42:39ID21459965
Tags

atomic_t

,

before

,

error

Topic

Linux Programming

Participating Experts
3
Points
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Comments
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Answers

 

by: person1994Posted on 2005-06-17 at 06:13:22ID: 14240411

Try to compile with cc -D__KERNEL__ .....

Good luck

 

by: Anindya_MPosted on 2005-06-19 at 02:08:18ID: 14251345

I can clearly see a } missing after your printk("bye").

 

by: jainrahPosted on 2005-06-23 at 14:03:27ID: 14288574

I would suggest reading the following doc if you want to get serious with module programming

http://www.tldp.org/LDP/lkmpg/2.4/html/index.html

You will be able to rectify most of the erros (apart from the parse errs) after you read the first couple of pages.

20120131-EE-VQP-002

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