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Old 05-23-2007, 09:33 PM   #1
jaepi
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help with insmod and rmmod


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...
 
Old 05-24-2007, 02:04 PM   #2
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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?
 
Old 05-24-2007, 04:08 PM   #3
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try modprobe then
 
Old 05-25-2007, 02:10 AM   #4
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You need to be root to run those commands.
 
Old 05-25-2007, 03:01 AM   #5
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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..
 
Old 05-25-2007, 03:36 AM   #6
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"no effect" really is no use... are you getting permission denied? command not found..??
 
Old 05-25-2007, 03:38 AM   #7
jaepi
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im getting command not found...
 
Old 05-25-2007, 03:49 AM   #8
acid_kewpie
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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...
 
Old 05-25-2007, 04:08 AM   #9
jaepi
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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
 
Old 05-25-2007, 04:09 AM   #10
jaepi
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shit, i was not logged as root...im trying it again...*sigh*
 
Old 05-25-2007, 04:13 AM   #11
jaepi
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after logged as root, i got this one...

Code:
[root@localhost dev-drive]# /sbin/insmod ./hello.c
insmod: error inserting './hello
 
Old 05-25-2007, 06:39 AM   #12
acid_kewpie
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the output of dmesg might show you more information.
 
Old 05-25-2007, 06:48 AM   #13
michaelk
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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.

Last edited by michaelk; 05-25-2007 at 06:57 AM.
 
Old 05-27-2007, 08:18 PM   #14
jaepi
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oh...so instead of hello.c, i will load hello.o?? but i still get the same error...
 
Old 05-28-2007, 01:51 AM   #15
gnashley
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Is your hello a program or a kernel module? Sounds like it is not a valid kernel module.
 
  


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