VFS: Convert K&R C -> ANSI C

Aditionally this removes all trailing whitespaces
using: sed -i 's/[[:space:]]*$//' *.c

Change-Id: I88451fdb6f6e79e61f8aae5bd5a7f2e3538f9944

VFS: store process suspension state as union

Previously, VFS would use various subsets of a number of fproc
structure fields to store state when the process is blocked
(suspended) for various reason

VFS: store process suspension state as union

Previously, VFS would use various subsets of a number of fproc
structure fields to store state when the process is blocked
(suspended) for various reasons. As a result, there was a fair
amount of abuse of fields, hidden state, and confusion as to
which fields were used with which suspension states.

Instead, the suspension state is now split into per-state
structures, which are then stored in a union. Each of the union's
structures should be accessed only right before, during, and right
after the fp_blocked_on field is set to the corresponding blocking
type. As a result, it is now very clear which fields are in use
at which times, and we even save a bit of memory as a side effect.

Change-Id: I5c24e353b6cb0c32eb41c70f89c5cfb23f6c93df

show more ...

VFS: merge scratchpad into fproc

There is no reason to keep these tightly coupled data structures
separate. Moreover, there is no reason to have a union of file
descriptor and file pointer, since t

VFS: merge scratchpad into fproc

There is no reason to keep these tightly coupled data structures
separate. Moreover, there is no reason to have a union of file
descriptor and file pointer, since the second can be derived from
the first. The result are somewhat cleaner VFS internals.

Change-Id: I854da7d8291177878eecfc3077ef0a9e0cc82aaa

show more ...

New sources layout

Change-Id: Ic716f336b7071063997cf5b4dae6d50e0b4631e9