Hi all, Take a look at http://kernelnewbies.org/code/intercept for example. You have to replace a entry on sys_call_table that isnīt used. Like up the 222, ie, sys_call_table[222]. Replace it for your syscall. Like hijack a syscall. For the user program call your syscall, put this code in user programīs source: #include <asm/unistd.h> // _syscallX macro #define __NR_my_newsyscall 222 // the number of your syscall on sys_call_table _syscall1(int,my_newsyscall,int,x) //example, depend how many arg ok after it, is only call the syscall like: main(){ int i; i=my_newsyscall(100); } The only difference beteween add and hijack is how the program will call your syscall. case 2, you have to inform the user program which entry on sys_call_table is your syscall. Case 1.... If I forgot some detail, anyone.... So, you donīt need to compile the kernel...... []īs Thobias. > > I am writing a kernel module. > > Currently the entry point to my module is a SYSTEM > CALL. > > My problem is I have to compile the whole kernel each > time I make any changes to my code. So I want to > convert my code to a lodable module. So that I don't > need to recompile the kernel each time. > > I am not sure how should I provide an entry point to > the user processes to my module. I don't want to use > ioctl as an entry point to my module. > > For Eg. My module has defined function "foo". How > should I make this function available to the user > process ? ---- Thobias Salazar Trevisan <thobias@cos.ufrj.br> Home Page - http://www.cos.ufrj.br/~thobias Parallel Computing Laboratory / COPPE Federal University of Rio de Janeiro Brazil __________________________ | | | Against - HTML Mail | | | -------------------------- -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/
