I have the following error when compiling the syscall.c file

syscall.c:639: error: syntax error before "mmap2"
syscall.c:639: warning: type defaults to `int' in declaration of `_syscall6'
syscall.c:639: warning: data definition has no type or storage class
syscall.c:640: error: syntax error before "getdents"
syscall.c:640: warning: type defaults to `int' in declaration of `_syscall3'
syscall.c:640: warning: data definition has no type or storage class
syscall.c:641: error: syntax error before "getdents64"
syscall.c:641: warning: type defaults to `int' in declaration of `_syscall3'
syscall.c:641: warning: data definition has no type or storage class
syscall.c:666: error: syntax error before "_llseek"
syscall.c:674: warning: return type defaults to `int'
syscall.c: In function `_syscall5':

I'm using ubuntu and the kernel version is
kl2305-04:/media/sdb1/zesto> uname -a
Linux kl2305-04 2.6.22-15-generic #1 SMP Wed Aug 20 18:39:13 UTC 2008 i686 GNU/Linux

It looks like some header file is missing somewhere. One *BIG* downside of Debian-derived distros, which includes Ubuntu, is that the kernels (along with some other software) are non-standard (i.e., non-vanilla, containing code not submitted or checked by their maintainers), which means you have the possibility of getting bit.

One thing you didn't mention: was it working before? Do you remember doing something (or not) before this happened?

Mike

it works on the 2.6.9 kernel. That was RH

Ah! A *LOT* of changes have happened since then, particularly around the time 2.6.9-12. These changes broke a few programs. Still, that shouldn't cause the kernel itself not to compile. The only possibility I can think of at the moment (I just woke up around 20 minutes ago) is that maybe the kernel is expecting a newer gcc, glibc, or associated utilities. Kind of a long shot, though.

I just realized you didn't mention what Ubuntu version you're using: if the distro is too old, all the other software will be too old for the kernel to compile right, as I mentioned above. (The kernel is picky about which version of gcc et al you use to compile it, due to the combination of old and new code present and its sheer size. This was a big problem in the days around the merger of egcs into the main gcc line.)

Mike

Nope not too old a version of ubuntu... 7.04

can you give me a code snippet to call the mmap2 syscall for 2.6.22. Maybe i will try that