My simple kernel module wont compile

Hey Guys

All im trying to do here is learn about make files and how to link linux header files stored in /usr/src/linux-headers-3.13.0-35-generic to my program that im writing.
So far ive been getting the simplest of Kernel Modules to compile and load in Linux but nothing useful . The moment I delve deeper I seem to get missing header file errors when using "make".
All I want to do is write from Kernel space into user space and visa verse. I will be dumping allocated PCI memory blocks into files. I will also have to edit registers of the PCI to be able to make triggers go off by setting bits high etc.
But this is just an introduction to it all and im already having trouble compiling.

Now im not 100% sure if its missing header files but the errors is quite large.

This is my Pastebin of the C MODULE Code :

pastebin.com/lWPBR8DJ

And here it the PASTEBIN of my MAKEFILE and its errors:

pastebin.com/ffT1F26N

ALSO...Does anybody know of a good tutorial on how to write a PCI driver in Kernel space using kernel modules...also how to send data from and to the module from UserSpace?

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Maybe you should replace the KERNEL_DIR definition in MAKEFILE. My suggestions:

KERNEL_DIR:=/usr/src/linux-headers-$(shell uname -r)/build or
KERNEL_DIR:=/lib/modules/$(shell uname -r)/build

On Thu, Sep 11, 2014 at 8:12 AM, testlaster <[email protected] <mailto:[email protected]>> wrote:

Hey Guys

All im trying to do here is learn about make files and how to link linux header files stored in /usr/src/linux-headers-3.13.0-35-generic to my program that im writing.
So far ive been getting the simplest of Kernel Modules to compile and load in Linux but nothing useful . The moment I delve deeper I seem to get missing header file errors when using "make". All I want to do is write from Kernel space into user space and visa verse. I will be dumping allocated PCI memory blocks into files. I will also have to edit registers of the PCI to be able to make triggers go off by setting bits high etc.
But this is just an introduction to it all and im already having trouble compiling.

Now im not 100% sure if its missing header files but the errors is quite large.

This is my Pastebin of the C MODULE Code :

pastebin.com/lWPBR8DJ <http://pastebin.com/lWPBR8DJ>

And here it the PASTEBIN of my MAKEFILE and its errors:

pastebin.com/ffT1F26N <http://pastebin.com/ffT1F26N>

ALSO...Does anybody know of a good tutorial on how to write a PCI driver in Kernel space using kernel modules...also how to send data from and to the module from UserSpace?

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org
<mailto:[email protected]>
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

Hey Guys

All im trying to do here is learn about make files and how to link linux header files stored in /usr/src/linux-headers-3.13.0-35-generic to my program that im writing.
So far ive been getting the simplest of Kernel Modules to compile and load in Linux but nothing useful . The moment I delve deeper I seem to get missing header file errors when using "make".
All I want to do is write from Kernel space into user space and visa verse. I will be dumping allocated PCI memory blocks into files. I will also have to edit registers of the PCI to be able to make triggers go off by setting bits high etc.
But this is just an introduction to it all and im already having trouble compiling.

Now im not 100% sure if its missing header files but the errors is quite large.

This is my Pastebin of the C MODULE Code :

pastebin.com/lWPBR8DJ

And here it the PASTEBIN of my MAKEFILE and its errors:

pastebin.com/ffT1F26N

ALSO...Does anybody know of a good tutorial on how to write a PCI driver in Kernel space using kernel modules...also how to send data from and to the module from UserSpace?

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

The first line didn't work because I seem to not have a build directory there.

Did you install the kernel source or at least the kernel headers?

---------- Forwarded message ----------
From: *testlaster* <testlaster at gmail.com <mailto:[email protected]>>
Date: Thu, Sep 11, 2014 at 11:13 AM
Subject: Re: My simple kernel module wont compile
To: kernelnewbies at kernelnewbies.org <mailto:[email protected]>

Hi Gustavo

I tried your suggestions.

The first line didn't work because I seem to not have a build directory there.
And the second one did exactly the same as mine did.

Quoted 50 lines · Gustavo Bittencourt

Maybe you should replace the KERNEL_DIR definition in MAKEFILE. My suggestions:

KERNEL_DIR:=/usr/src/linux-headers-$(shell uname -r)/build or
KERNEL_DIR:=/lib/modules/$(shell uname -r)/build

On Thu, Sep 11, 2014 at 8:12 AM, testlaster <[email protected] <mailto:[email protected]>> wrote:

Hey Guys

All im trying to do here is learn about make files and how to link linux header files stored in /usr/src/linux-headers-3.13.0-35-generic to my program that im writing.
So far ive been getting the simplest of Kernel Modules to compile and load in Linux but nothing useful . The moment I delve deeper I seem to get missing header file errors when using "make". All I want to do is write from Kernel space into user space and visa verse. I will be dumping allocated PCI memory blocks into files. I will also have to edit registers of the PCI to be able to make triggers go off by setting bits high etc.
But this is just an introduction to it all and im already having trouble compiling.

Now im not 100% sure if its missing header files but the errors is quite large.

This is my Pastebin of the C MODULE Code :

pastebin.com/lWPBR8DJ <http://pastebin.com/lWPBR8DJ>

And here it the PASTEBIN of my MAKEFILE and its errors:

pastebin.com/ffT1F26N <http://pastebin.com/ffT1F26N>

ALSO...Does anybody know of a good tutorial on how to write a PCI driver in Kernel space using kernel modules...also how to send data from and to the module from UserSpace?

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org
<mailto:[email protected]>
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

Quoted 4 lines

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Kernelnewbies at kernelnewbies.org <mailto:[email protected]>
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org <mailto:[email protected]>
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

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Kernelnewbies at kernelnewbies.org
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

Yes I did run sudo apt-get install build-essential linux-headers-$(uname -r) to download the necessary headers. I also ran an apt-get for source files and it did install a whole bunch of them but Im not under the impression that you actually need the source files as well since they suppose to come with the OS?

The thing its complaining about... unistd_32.h appears to really be missing. Could this be because of a 64Bit version of the OS?

Maybes
just doesnt install it because its not necessary. But that wouldnt make sense because in unistd.h the only include there is will be the unistd_32.h and nowhere inside stands anything of #include<unistd_64.h>