Linux - NewbieThis Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place!
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
I am new to Linux. I just wanted to create a system call. I am using kernel 220.127.116.11. What I did to create a system call is:
1)I created a directory as /usr/src/linux-18.104.22.168/mycall.
2)I created a .c file as /usr/src/linux-22.214.171.124/mycall/mycall.c
SYSTEM_DEFINE1(mycall, int, i)
3)I created a Makefile file as /usr/src/linux-126.96.36.199/mycall/Makefile
obj-y := mycall.o
4) I edited /usr/src/linux-188.8.131.52/include/linux/syscalls.h
asmlinkage long sys_mycall(void);
5) I edited /usr/src/linux-184.108.40.206/usr/include/asm/unistd_32.h
#define __NR_mycall 333
6) I edited /usr/src/linux-220.127.116.11/arch/x86/kernel/syscall_table_32.S
.long sys_mycall /* 333 */
Now finally when I run the command:
I get the output as :
mycall/mycall.c:3: error: expected ‘)’ before ‘int’
make: *** [mycall/mycall.o] Error 1
make: *** [_module_mycall] Error 2
Where am I wrong?
I tried for the same system call without any argument then on make I got the result as:
mycall/mycall.c:4: warning: return type defaults to ‘int’
mycall/mycall.c:4: warning: function declaration isn’t a prototype
Building modules, stage 2.
MODPOST 0 modules
y is it so?
Is the procedure I adopted, wrong?
Please help me...
Please post your thread in only one forum. Posting a single thread in the most relevant forum will make it easier for members to help you and will keep the discussion in one place. This thread is being closed because it is a duplicate.