Hi all, I tried to implement a new system call. I used the instructions of http://user-mode-linux.sourceforge.net/lksct/index.html in the linux kernel 2.6.11.8 I compiled and I made a program example: #include <stdio.h> #include <errno.h> #include <asm/arch/unistd.h> #include <linux/linkage.h> _syscall0(int,cloak) int main(){ printf("Chamando cloak com pid 1\n"); cloak(); return 0; } The coak() is supposed to print a message, we could see it using dmesg. But, it doesnt happen. I also added the system call in the entry.S file. What can I do to solve this problem? The sample program runs, but the system call has no effect. -- Karane. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/