* ext/socket/init.c (wait_connectable): break if the socket is
	  writable to avoid infinite loops on FreeBSD and other platforms
	  which conforms to SUSv3.  This problem cannot be reproduced with
	  loopback interfaces, so it's hard to write test code.
	  rsock_connect() and wait_connectable() are overly complicated, so
	  they should be refactored, but I commit this fix as a workaround
	  for the release of Ruby 1.9.3 scheduled on Feb 24.
	  [ruby-core:60940] [Bug #9547]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45129 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  RBASIC_CLASS(obj) macro which returns a class of `obj'.
  This change is a part of RGENGC branch [ruby-trunk - Feature #8339].
* object.c: add new function rb_obj_reveal().
  This function reveal interal (hidden) object by rb_obj_hide().
  Note that do not change class before and after hiding.
  Only permitted example is:
  klass = RBASIC_CLASS(obj);
  rb_obj_hide(obj);
  ....
  rb_obj_reveal(obj, klass);
  TODO: API design. rb_obj_reveal() should be replaced with others.
  TODO: modify constified variables using cast may be harmful for
  compiler's analysis and optimizaton.
  Any idea to prohibt inserting RBasic::klass directly?
  If rename RBasic::klass and force to use RBASIC_CLASS(obj),
  then all codes such as `RBASIC(obj)->klass' will be
  compilation error. Is it acceptable? (We have similar
  experience at Ruby 1.9,
  for example "RARRAY(ary)->ptr" to "RARRAY_PTR(ary)".
* internal.h: add some macros.
* RBASIC_CLEAR_CLASS(obj) clear RBasic::klass to make it internal
  object.
* RBASIC_SET_CLASS(obj, cls) set RBasic::klass.
* RBASIC_SET_CLASS_RAW(obj, cls) same as RBASIC_SET_CLASS
  without write barrier (planned).
* RCLASS_SET_SUPER(a, b) set super class of a.
* array.c, class.c, compile.c, encoding.c, enum.c, error.c, eval.c,
  file.c, gc.c, hash.c, io.c, iseq.c, marshal.c, object.c,
  parse.y, proc.c, process.c, random.c, ruby.c, sprintf.c,
  string.c, thread.c, transcode.c, vm.c, vm_eval.c, win32/file.c:
  Use above macros and functions to access RBasic::klass.
* ext/coverage/coverage.c, ext/readline/readline.c,
  ext/socket/ancdata.c, ext/socket/init.c,
* ext/zlib/zlib.c: ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40691 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  [ruby-core:54777] [Feature #8368]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40639 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

subclasses that include WaitReadable or WaitWritable rather than
extending them into the exception object each time.

* error.c: Capture EGAIN, EWOULDBLOCK, EINPROGRESS exceptions and
  export them for use in WaitReadable/Writable exceptions.
* io.c: Create versions of EAGAIN, EWOULDBLOCK, EINPROGRESS that
  include WaitReadable and WaitWritable. Add rb_readwrite_sys_fail
  for nonblocking failures using those exceptions. Use that
  function in io_getpartial and io_write_nonblock instead of
  rb_mod_sys_fail
* ext/openssl/ossl_ssl.c: Add new SSLError subclasses that include
  WaitReadable and WaitWritable. Use those classes for
  write_would_block and read_would_block instead of rb_mod_sys_fail.
* ext/socket/ancdata.c: Use rb_readwrite_sys_fail instead of
  rb_mod_sys_fail in bsock_sendmsg_internal and
  bsock_recvmsg_internal.
* ext/socket/init.c: Use rb_readwrite_sys_fail instead of
  rb_mod_sys_fail in rsock_s_recvfrom_nonblock and
  rsock_s_connect_nonblock.
* ext/socket/socket.c: Use rb_readwrite_sys_fail instead of
  rb_mod_sys_fail in sock_connect_nonblock.
* include/ruby/ruby.h: Export rb_readwrite_sys_fail for use instead
  of rb_mod_sys_fail. Introduce new constants RB_IO_WAIT_READABLE and
  RB_IO_WAIT_WRITABLE for first arg to rb_readwrite_sys_fail.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40195 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  [ruby-core:45617] [Feature #6583] proposed Eric Hodel.

* ext/socket/rubysocket.h (rsock_sys_fail_host_port): Declared.
  (rsock_sys_fail_path): Ditto.
  (rsock_sys_fail_sockaddr): Ditto.

* ext/socket/udpsocket.c (udp_connect): Use rsock_sys_fail_host_port.
  (udp_bind): Ditto.
  (udp_send): Ditto.

* ext/socket/init.c (rsock_init_sock): Specify a string for rb_sys_fail
  argument.
  (make_fd_nonblock): Ditto.
  (rsock_s_accept): Ditto.

* ext/socket/ipsocket.c (init_inetsock_internal): Use
  rsock_sys_fail_host_port.

* ext/socket/socket.c (rsock_sys_fail_host_port): Defined.
  (rsock_sys_fail_path): Ditto.
  (rsock_sys_fail_sockaddr): Ditto.
  (setup_domain_and_type): Use rsock_sys_fail_sockaddr.
  (sock_connect_nonblock): Ditto.
  (sock_bind): Ditto.
  (sock_gethostname): Specify a string for rb_sys_fail argument.
  (socket_s_ip_address_list): Ditto.

* ext/socket/basicsocket.c (bsock_shutdown): Specify a string for
  rb_sys_fail argument.
  (bsock_setsockopt): Use rsock_sys_fail_path.
  (bsock_getsockopt): Ditto.
  (bsock_getpeereid): Refine the argument for rb_sys_fail.

* ext/socket/unixsocket.c (rsock_init_unixsock): Use
  rsock_sys_fail_path.
  (unix_path): Ditto.
  (unix_send_io): Ditto.
  (unix_recv_io): Ditto.
  (unix_addr): Ditto.
  (unix_peeraddr): Ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40149 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  Debian GNU/kFreeBSD.  Consider HAVE_ACCEPT4 is defined
  but SOCK_CLOEXEC is not defined.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40136 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  sockaddr_storage for less casts.

* ext/socket/rubysocket.h (union_sockaddr): defined.

* ext/socket/socket.c (sock_accept): use union_sockaddr.
  (sock_accept_nonblock): ditto.
  (sock_sysaccept): ditto.
  (sock_s_getnameinfo): ditto.

* ext/socket/basicsocket.c (bsock_getsockname): ditto.
  (bsock_getpeername): ditto.
  (bsock_local_address): ditto.
  (bsock_remote_address): ditto.

* ext/socket/ancdata.c (bsock_recvmsg_internal): ditto.

* ext/socket/init.c (recvfrom_arg): ditto.
  (recvfrom_blocking): ditto.
  (rsock_s_recvfrom): ditto.
  (rsock_s_recvfrom_nonblock): ditto.
  (rsock_getfamily): ditto.

* ext/socket/raddrinfo.c (rb_addrinfo_t): ditto.
  (ai_get_afamily): ditto.
  (inspect_sockaddr): ditto.
  (addrinfo_mdump): ditto.
  (addrinfo_mload): ditto.
  (addrinfo_getnameinfo): ditto.
  (addrinfo_ip_port): ditto.
  (extract_in_addr): ditto.
  (addrinfo_ipv6_to_ipv4): ditto.
  (addrinfo_unix_path): ditto.

* ext/socket/tcpserver.c (tcp_accept): ditto.
  (tcp_accept_nonblock): ditto.
  (tcp_sysaccept): ditto.

* ext/socket/ipsocket.c (ip_addr): ditto.
  (ip_peeraddr): ditto.
  (ip_s_getaddress): ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39477 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  socket address returned from recvmsg().

* ext/socket/init.c (recvfrom_blocking): ignore truncated part of
  socket address returned from recvfrom().
  (rsock_s_recvfrom_nonblock): ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39278 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  socket address. 

* ext/socket/rubysocket.h (rsock_make_ipaddr): add an argument for
  socket address length.
  (rsock_ipaddr): ditto.

* ext/socket/ipsocket.c (ip_addr): pass length to rsock_ipaddr.
  (ip_peeraddr): ditto.
  (ip_s_getaddress): pass length to rsock_make_ipaddr.

* ext/socket/socket.c (make_addrinfo): pass length to rsock_ipaddr.
  (sock_s_getnameinfo): pass actual address length to rb_getnameinfo.
  (sock_s_unpack_sockaddr_in): pass length to rsock_make_ipaddr.
  
* ext/socket/init.c (rsock_s_recvfrom): pass length to rsock_ipaddr.
  (rsock_s_recvfrom_nonblock): ditto.

* ext/socket/tcpsocket.c (tcp_sockaddr): pass length to
  rsock_make_ipaddr.

* ext/socket/raddrinfo.c (make_ipaddr0): add an argument for socket
  address length.  pass the length to rb_getnameinfo.
  (rsock_ipaddr): ditto.
  (rsock_make_ipaddr): add an argument for socket address length. 
  pass the length to make_ipaddr0.
  (make_inetaddr): pass length to make_ipaddr0.
  a local variable renamed.
  (host_str): a local variable renamed.
  (port_str): ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39239 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* ext/socket/init.c (cloexec_accept): fix declaration-after-statement.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39040 b2dd03c8-39d4-4d8f-98ff-823fe69b080e