These are just based on the read/pread{,64} implementations with the
function calls and error messages adjusted as appropriate. The only
difference is that the buffer parameters are const.
Change-Id: Ida1597a903807f583f230d74bcedffdb7b24fcf6
A __size_mul_overflow utility is used to take advantage of the checked
overflow intrinsics in Clang and GCC (>= 5). The fallback for older
compilers is the optimized but less than ideal overflow checking pattern
used in OpenBSD.
Change-Id: Ibb0d4fd9b5acb67983e6a9f46844c2fd444f7e69
Group network context elements in to a single struct and
add a version of android_getaddrinfofornet() that accepts it.
The introduction of UID-based routing means that the UID is an
integral part of the network context when evaluating connectivity,
sorting addresses, etc.
Also, introduce a distinction between DNS netids/marks and those
expected to be used by the application. This can be important
when the network an application is using is not the same as the
network on which DNS queries will be issued.
Additionally, de-duplicate the UDP connect logic (collapse both
_test_connect() and _find_src_addr() into just the latter).
Bug: 19470192
Bug: 20733156
Bug: 21832279
Change-Id: If16c2f4744695f507993afdac078ca105eb5d3e4
