Commit graph

5 commits

Author SHA1 Message Date
Michael W. Bombardieri
a806c5feb1 make minix lwip make explicit use of 'int'
makes lwip use "unsigned int" instead of "unsigned" since this is
more obvious (i.e. type is not implied).

Change-Id: I852eb80484516e1235241d55be3e15174fa24109
2013-04-11 22:37:30 +02:00
Tomas Hruby
fb31513b00 LWIP,NETSOCK - lwip uses asynchronous protocol
- libnetsock - internal implementation of a socket on the lwip
  server side. it encapsulates the asynchronous protocol

- lwip server - uses libnetsock to work with the asynchronous
  protocol
2012-03-02 15:44:48 +00:00
Thomas Veerman
d4b72e81b2 Cleanup servers to make GCC/Clang a little happier 2011-09-08 13:57:03 +00:00
David van Moolenbroek
c51cd5fe91 Server/driver protocols: no longer allow third-party copies.
Before safecopies, the IO_ENDPT and DL_ENDPT message fields were needed
to know which actual process to copy data from/to, as that process may
not always be the caller. Now that we have full safecopy support, these
fields have become useless for that purpose: the owner of the grant is
*always* the caller. Allowing the caller to supply another endpoint is
in fact dangerous, because the callee may then end up using a grant
from a third party. One could call this a variant of the confused
deputy problem.

From now on, safecopy calls should always use the caller's endpoint as
grant owner. This fully obsoletes the DL_ENDPT field in the
inet/ethernet protocol. IO_ENDPT has other uses besides identifying the
grant owner though. This patch renames IO_ENDPT to USER_ENDPT, not only
because that is a more fitting name (it should never be used for I/O
after all), but also in order to intentionally break any old system
source code outside the base system. If this patch breaks your code,
fixing it is fairly simple:

- DL_ENDPT should be replaced with m_source;
- IO_ENDPT should be replaced with m_source when used for safecopies;
- IO_ENDPT should be replaced with USER_ENDPT for any other use, e.g.
  when setting REP_ENDPT, matching requests in CANCEL calls, getting
  DEV_SELECT flags, and retrieving of the real user process's endpoint
  in DEV_OPEN.

The changes in this patch are binary backward compatible.
2011-04-11 17:35:05 +00:00
Tomas Hruby
dca25a1b39 LWIP - the lwip server
The server implements inet-like interface to vfs and drivers. The core
functionality is contained in the liblwip.
2011-04-07 07:44:11 +00:00