Re: Kernel 2.x POSIX Compliance/Conformance...

["J.A. Magallon" <jamagallon@able.es>]

On 2004.02.04, "Randazzo, Michael" wrote:
> Where are the kernel calls defined for locks and semaphores?
> 
> How come the kernel headers don't define Posix.4 
> semaphores (_POSIX_SEMAPHROES) or Posix itself
> (_POSIX_VERSION is undefined)
> 

The kernel internals are not nor Posix, nor SysV nor anything. It is just
by chance (or logic ;)) that some functions in kernel are named like the
userspace similars. Kernel source is in its own namespace.

One example (not a syscall, but useful I expect):
- Kernel has a 'sys_clone()' function, numbered __NR_clone
- GLibc implements a linux-specific system-call 'clone()', using sys_clone
- Glibc uses 'clone()' to implement 'fork()'

So, don't try to look for fork() inside the kernel.

-- 
J.A. Magallon <jamagallon()able!es>     \                 Software is like sex:
werewolf!able!es                         \           It's better when it's free
Mandrake Linux release 10.0 (Cooker) for i586
Linux 2.6.2-rc3-jam1 (gcc 3.3.2 (Mandrake Linux 10.0 3.3.2-4mdk))