Re: Received Warnings and errors while compiling the Fedora Linux kernel

[Martin Mancuska <borg@xxxxxxx>]

Hi,

you can not call open/close/write functions from kernel. I suggest 
you write data throught sysfs and then read these data by user land 
program.

martin

Irfan Ahmed  wrote / napísal(a):
> I am using Fedora Linux 2.6.18. I have updated file 
> ~/linux-2.6.18.2/net/ipv6/tcp_ipv6.c file.
> I am working on a project  and at first stage, I need to write the ipsec 
> decrypted packets to disk.
> For this reason, I have embeded the following code in "tcp_v6_rcv" function.
>     file_desc = open('/testlog.txt',O_WRONLY|O_APPEND);
>     file_write_status = write(file_desc,skb->data,skb->len);   
>     close(file_desc);
>
> When I compiling the kernel, I received the following warnings and errors
> ------------------------------------------tcp_ipv6.c---------------------------------------------------------------
> [root@localhost linux-2.6.18.2]# make modules
>   CHK     include/linux/version.h
>   CHK     include/linux/utsrelease.h
>   CC [M]  net/ipv6/tcp_ipv6.o
> net/ipv6/tcp_ipv6.c: In function ‘tcp_v6_rcv’:
> net/ipv6/tcp_ipv6.c:1224: warning: implicit declaration of function ‘open’
> net/ipv6/tcp_ipv6.c:1224:19: warning: character constant too long for 
> its type
> net/ipv6/tcp_ipv6.c:1225: warning: implicit declaration of function ‘write’
> net/ipv6/tcp_ipv6.c:1226: warning: implicit declaration of function ‘close’
>   LD [M]  net/ipv6/ipv6.o
>   Building modules, stage 2.
>   MODPOST
> WARNING: drivers/atm/he.o - Section mismatch: reference to .init.text: 
> from .text between 'he_start' (at offset 0x2074) and 'he_service_tbrq'
> WARNING: "close" [net/ipv6/ipv6.ko] undefined!
> WARNING: "open" [net/ipv6/ipv6.ko] undefined!
> WARNING: "write" [net/ipv6/ipv6.ko] undefined!
>   CC      net/ipv6/ipv6.mod.o
>   LD [M]  net/ipv6/ipv6.ko
> ------------------------------------------------------------------------------------------------------------------------------------------------
>
> Any one has any idea about it to solve the warnings.
>
> Regards,
>
> Send instant messages to your online friends http://uk.messenger.yahoo.com

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