[HACKERS] Postgres Process in Kernel Mode?

[moises]

Hello,   I’m new in postgres SQL and I have some questions about the space where postgres process run.     1-Can any body say me what libs use postgres for make system calls, for example LIBC? 2-Can any body talk me if some postgres process can run in Linux kernel space? 3- Some body knows if exist some projects that ports postgres process on Linux kernel space.     I was read some source code of postgres, like, Postgres.C and others…   I was found C instructions like Printf, that’s prohibitive for Linux kernel applications, for example in kernel mode we use printk.   I suppose that postgres are ported in a user space only. I’m Ok?   Thanks Moises       -