Rewrite <netdb.h> and drop a lot of non-standard stuff.

While the BSDs and glibc seem to have various _r functions,
they all return int for errors instead of a pointer, making ours
exactly backwards of theirs for error reporting and thus useless.
So, remove them from the header entirely. They are left in
for ABI backwards compatibility for the time being.

A few constants not used by anything in the tree (i.e. not actually
implemented by libnetwork/netresolv) were also dropped. Some deprecated
or non-standard functions were placed behind _DEFAULT_SOURCE or deleted
entirely.

The header itself is now organized approximately as the BSDs do,
although with various Haiku-isms instead of BSD-isms where appropriate.

netdb: Drop definitions for getipnodeby...

We do not actually export them, or even have source for them in-tree.

netdb.h: fix prototype of gethostbyaddr()

first parameter should be const void*, in line with freebsd and linux etc.

https://xref.landonf.org/source/xref/freebsd-current/include/netdb.h#232

Change-Id: I5e953e8e7e49a6f09cd1143de6ca57eb98f77d73
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3147
Reviewed-by: Michael Lotz <mmlr@mlotz.ch>

resolv.h & netdb.h: Clean up and simplify.

* Remove all functions and a number of constants that neither
glibc nor musl define or support (and even FreeBSD does not
declare a good number of these anymore.)
* Redeclare the primary flags in terms of (1 << X) instead
of raw 0x... for readability (the constants at the end
do NOT match up to their definitions in glibc, musl, and BSDs!)
* Remove usage of unneeded headers, and __BEGIN/END_DECLS.
* Replace non-Haiku license headers with the ones from FreeBSD,
which notably contain a removal of the advertising clause.

ABIs remain unchanged, but a small set of applications that
use these esoteric APIs may not compile anymore (are there
any remaining?)

Remove pthread.h include from netdb.h

- It is not needed in the .h, and makes gawk build fail.

Remove gethostbyname_r and gethostbyaddr_r from headers

* They were not in BeOS.
* They are also not in netresolv, they are deprecated and getaddrinfo
should be used.

libbind: integrate "netresolv" patches from NetBSD.

libbind development was transferred to the NetBSD project at
http://wiki.netbsd.org/individual-software-releases/netresolv/

There isn't an official release yet, but they provide a set of patches
against the latest libbind release.

* Remove all files we don't use
* Merge the changes to the remaining files
* Add some new files we need
* Move getifaddrs implementation to libnetwork (instead of libbnetapi)
so it can be used by netresolv.

Fixes #8293 : netresolv uses getifaddrs to determine if there is a local
IPv6 address. If there is not, it will not return AAAA records.

Updated copyright in headers. No functional change.

Updated posix headers to remove commas from copyright line, to match the preferred coding guidelines.
Cleaned up some header style violations, making sure there are two blank lines after the header guards.
This fixes the posix header part of #2191.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39288 a95241bf-73f2-0310-859d-f6bbb57e9c96

Updated AI_* flags to match up with our implementation. Should fix #3945.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37266 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Moved the location of the "hosts" file to
B_COMMON_SETTINGS_DIRECTORY/network/hosts.
* Moved the location of the "services" file to
B_COMMON_DATA_DIRECTORY/network/services.
* Removed headers I forgot to remove.
* Made getnameinfo() use socklen_t internally as well.
* Removed _PATH_* constants from netdb.h that we don't deliver anymore.
* Automatic whitespace cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33972 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Applied Scott's patch to remove the duplicate definitions, thus closing
bug #2237. Thanks!
* Cleaned up the file a bit (removed the _P() and fixed indentation).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28961 a95241bf-73f2-0310-859d-f6bbb57e9c96

replaced size_t with socklen_t where appropriate following POSIX
Axel, I hope you don't mind :)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19746 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merge of branches/team/network/new_stack - not yet complete as SVN does only support
replacing files when merging when you don't have deleted them manually (for some reason,
it only works as part of the merge operation, and we didn't copy the whole tree to
have "a fresh start" - next time we know better, at least if SVN still suffers from
that same limitation).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18456 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed #ifdef __cplusplus from networking headers. The check is already done in cdefs.h (__BEGIN_DECLS) which I committed yesterday.

Committed libnetwork.so. I actually wanted to port BSD's libc/net resolver, but that one uses too many unsupported functions, so I basically merged libbind.so and libsocket.so into one library.

Moved the libbind.so sources to libnetwork/dns.

Cleaned up native part of libbind.so a little bit more. Though, the ugly hack remains. We nbetter pthread/mutex support. Added TODO that we also shousctl() into the kernel and libroot.so.

Improved DEVNOTES a little bit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15605 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed unneeded libbind files (were never compiled, anyway).

Moved some headers around and cleaned them up.

Fixed threading code in libbind.so. Don't know why I hadn't noticed this before. Now it is reliable, but uses an even uglier hack.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15585 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged changes from branch build_system_redesign at revision 14573.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14574 a95241bf-73f2-0310-859d-f6bbb57e9c96

Remove non-POSIX sys/cdefs.h dependency.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7547 a95241bf-73f2-0310-859d-f6bbb57e9c96

Checking in headers for libbind.so.
Also updated our socket.h to be more compatible with BONE (we do not support SO_NONBLOCK which is needed for Mozilla).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7201 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fix the h_errno issue of this thread-safe global variable, thanks to Thread Local Storage.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6470 a95241bf-73f2-0310-859d-f6bbb57e9c96

h_errno is now declared in each file that uses it.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5070 a95241bf-73f2-0310-859d-f6bbb57e9c96

Last modification was wrong. The declaration of h_errno was needed to compile libnet.so.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5058 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed declaration of h_errno variable.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5023 a95241bf-73f2-0310-859d-f6bbb57e9c96

added <netinet/in.h> include and C++ header guards


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1654 a95241bf-73f2-0310-859d-f6bbb57e9c96

It is accomplished ...


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10 a95241bf-73f2-0310-859d-f6bbb57e9c96

Remove gethostbyname_r and gethostbyaddr_r from headers

* They were not in BeOS.
* They are also not in netresolv, they are deprecated and getaddrinfo
should be used.

libbind: integrate "netresolv" patches from NetBSD.

libbind development was transferred to the NetBSD project at
http://wiki.netbsd.org/individual-software-releases/netresolv/

There isn't an official release yet, but they provide a set of patches
against the latest libbind release.

* Remove all files we don't use
* Merge the changes to the remaining files
* Add some new files we need
* Move getifaddrs implementation to libnetwork (instead of libbnetapi)
so it can be used by netresolv.

Fixes #8293 : netresolv uses getifaddrs to determine if there is a local
IPv6 address. If there is not, it will not return AAAA records.

Updated copyright in headers. No functional change.

Updated posix headers to remove commas from copyright line, to match the preferred coding guidelines.
Cleaned up some header style violations, making sure there are two blank lines after the header guards.
This fixes the posix header part of #2191.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39288 a95241bf-73f2-0310-859d-f6bbb57e9c96

Updated AI_* flags to match up with our implementation. Should fix #3945.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37266 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Moved the location of the "hosts" file to
B_COMMON_SETTINGS_DIRECTORY/network/hosts.
* Moved the location of the "services" file to
B_COMMON_DATA_DIRECTORY/network/services.
* Removed headers I forgot to remove.
* Made getnameinfo() use socklen_t internally as well.
* Removed _PATH_* constants from netdb.h that we don't deliver anymore.
* Automatic whitespace cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33972 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Applied Scott's patch to remove the duplicate definitions, thus closing
bug #2237. Thanks!
* Cleaned up the file a bit (removed the _P() and fixed indentation).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28961 a95241bf-73f2-0310-859d-f6bbb57e9c96

replaced size_t with socklen_t where appropriate following POSIX
Axel, I hope you don't mind :)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19746 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merge of branches/team/network/new_stack - not yet complete as SVN does only support
replacing files when merging when you don't have deleted them manually (for some reason,
it only works as part of the merge operation, and we didn't copy the whole tree to
have "a fresh start" - next time we know better, at least if SVN still suffers from
that same limitation).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18456 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed #ifdef __cplusplus from networking headers. The check is already done in cdefs.h (__BEGIN_DECLS) which I committed yesterday.

Committed libnetwork.so. I actually wanted to port BSD's libc/net resolver, but that one uses too many unsupported functions, so I basically merged libbind.so and libsocket.so into one library.

Moved the libbind.so sources to libnetwork/dns.

Cleaned up native part of libbind.so a little bit more. Though, the ugly hack remains. We nbetter pthread/mutex support. Added TODO that we also shousctl() into the kernel and libroot.so.

Improved DEVNOTES a little bit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15605 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed unneeded libbind files (were never compiled, anyway).

Moved some headers around and cleaned them up.

Fixed threading code in libbind.so. Don't know why I hadn't noticed this before. Now it is reliable, but uses an even uglier hack.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15585 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged changes from branch build_system_redesign at revision 14573.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14574 a95241bf-73f2-0310-859d-f6bbb57e9c96

Remove non-POSIX sys/cdefs.h dependency.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7547 a95241bf-73f2-0310-859d-f6bbb57e9c96

Checking in headers for libbind.so.
Also updated our socket.h to be more compatible with BONE (we do not support SO_NONBLOCK which is needed for Mozilla).


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7201 a95241bf-73f2-0310-859d-f6bbb57e9c96

Fix the h_errno issue of this thread-safe global variable, thanks to Thread Local Storage.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6470 a95241bf-73f2-0310-859d-f6bbb57e9c96

h_errno is now declared in each file that uses it.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5070 a95241bf-73f2-0310-859d-f6bbb57e9c96

Last modification was wrong. The declaration of h_errno was needed to compile libnet.so.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5058 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed declaration of h_errno variable.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5023 a95241bf-73f2-0310-859d-f6bbb57e9c96

added <netinet/in.h> include and C++ header guards


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1654 a95241bf-73f2-0310-859d-f6bbb57e9c96

It is accomplished ...


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10 a95241bf-73f2-0310-859d-f6bbb57e9c96