All of these requests share the same message type as at least one server
manages those requests in the same handler, just by checking the actual
type of the request, and then acting upon it.
Change-Id: I17337b4c67ae209523574c22ccc108cf5f1e65e9
. makes it safe to transparently repeate i/o operation on
EFAULT
. needed for future re-issued i/o operation change in VFS
Change-Id: Iea6b29f3bff19002dcd69b30569671768ac17e21
- simplify and repair UDS request handling state machine;
- simplify interface used between internal modules;
- implement missing support for nonblocking I/O;
- fix select implementation;
- clean up global variables.
Change-Id: Ia82c5c6f05cc3f0a498efc9a26de14b1cde6eace
Because pipes have no file position. VFS maintained (file) offsets into a
buffer internal to PFS and stored them in vnodes for simplicity, mixing
the responsibilities of filp and vnode objects.
With this patch PFS ignores the position field in REQ_READ and REQ_WRITE
requests making VFS' job a lot simpler.
. all invocations were S or D, so can safely be dropped
to prepare for the segmentless world
. still assign D to the SCP_SEG field in the message
to make previous kernels usable
