> You mentioned that the Ori Pomerantz's LKM Programming Guide is too old > for /proc part. Does this also apply to Chapter 7 System Calls? I > want to add a system call, say nrprocess(), with these steps: 1) add an > entry in include/asm-i386/unistd.h 2) #insmod nrprocess.o there isnt a concept called loadable system calls in linux.but u can add dynamically with out recompiling the kernel by directly doing changes in the sys_call_table.Note : is not portable. >1) add an > entry in include/asm-i386/unistd.h 2) #insmod nrprocess.o No need to add an entry in unistd.h if u r planning to add the system call using a module. > but I don't see how the userland application know the new system call. use _syscallX(...,...) macros defined in unistd.h from the userland programs > Do I have to recompile the kernel? I wonder there is document which > explains that. No need to recompile. Others please clarify if i m wrong. regards, mohan. - 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/
