help with insmod and rmmod

jaepi · 05-23-2007, 09:33 PM

hello there, im currently studying linux kernel, i have a problem..i can compile my program using gcc but i cannot run my module using the insmod command nor remove it using the rmmod...i viewed the list of commands i was not able to find these commands(insmod and rmmod)...what do you think is the problem?? my suspicion is i was not able to configure my applications well or i missed something when i installed my distro, btw im using fedora core 3...thanks...

acid_kewpie · 05-24-2007, 02:04 PM

you just can't run the programs? they both live in /sbin/ and *will* be there. maybe a path issue if you anre't logging in directly as root?

Alien_Hominid · 05-24-2007, 04:08 PM

try modprobe then

gnashley · 05-25-2007, 02:10 AM

You need to be root to run those commands.

jaepi · 05-25-2007, 03:01 AM

i logged in as root and i tried using modprob...but no effect... i just passed by linux device drivers, just to have an idea on how modules are created and it's difference from an application..

acid_kewpie · 05-25-2007, 03:36 AM

"no effect" really is no use... are you getting permission denied? command not found..??

jaepi · 05-25-2007, 03:38 AM

im getting command not found...

acid_kewpie · 05-25-2007, 03:49 AM

right so next time you ask a question, give information like that... so as i originalyl said, it'll be a path issue. try /sbin/insmod etc...

jaepi · 05-25-2007, 04:08 AM

tried it...but im getting this one...

Code:

[dinglej@localhost dev-drive]$ /sbin/insmod ./hello.c
insmod: error inserting './hello.c': -1 Operation not permitted

jaepi · 05-25-2007, 04:09 AM

shit, i was not logged as root...im trying it again...*sigh*

jaepi · 05-25-2007, 04:13 AM

after logged as root, i got this one...

Code:

[root@localhost dev-drive]# /sbin/insmod ./hello.c
insmod: error inserting './hello

acid_kewpie · 05-25-2007, 06:39 AM

the output of dmesg might show you more information.

michaelk · 05-25-2007, 06:48 AM

Quote:

Originally Posted by jaepi

after logged as root, i got this one...

Code:

[root@localhost dev-drive]# /sbin/insmod ./hello.c
insmod: error inserting './hello

Adding my 2 cents worth, from your post it appears that you are trying to load the source code and not the compiled module.

jaepi · 05-27-2007, 08:18 PM

oh...so instead of hello.c, i will load hello.o?? but i still get the same error...

gnashley · 05-28-2007, 01:51 AM

Is your hello a program or a kernel module? Sounds like it is not a valid kernel module.