Hi Jan
Yes! I have declared sys_test. This is what i did in implementing my new
system call "test(int)".
In file LINUXSOURCE/inlucde/asm/include/unistd.h, I added
#define __NR_test 226
In file /usr/include/bits/syscall.h, I added
#define SYS_test__NR_test
Then Created a directory "test" under LINUXSOURCE
did my makefile, in which i added
#include<asm/unistd.h>
_syscall1(int,test,int,number)
(The system call test(int) takes one integer as its argument).
then in my makefile i added the following lines:
O_TARGET := testCall.o
O_OBJS:=test.o
also, I added the top level directories in my Makefile
then i edited the entry.S in <linuxsource>/arch/i386/kernel
added the following at the end
.long SYMBOL_NAME(sys_test)
the last few lines of my entry.S looks like this
.rept NR_syscalls-(.-sys_call_table)/4
.long SYMBOL_NAME(sys_ni_syscall)
.endr
so, I didn't make any changes to these lines shown just above.
since,I added an other directory under linux source, I edited the top level
makefile.
thats all I did.
and Make dep went well,but, make bzImage gives an error:
In arch/i386/kernel/kernel.o: n function sys_call_table:
arch/i386/kernel/kernel.o(data+0x3d4): undefined reference to 'sys_test'
so, I think Iam presenting a clear picture of what all I did in implementing
the system call( without confusing u). could u figure out what the problem
could be???
Thanks!!
Charumathi.
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