* child_info.h (CURR_CHILD_INFO_MAGIC): Reset.

(child_info_fork::heaptop): Remove obsolete element.
(child_info_fork::heabbase): Ditto.
(child_info_fork::heapptr): Ditto.
(child_info_fork::mount_table): New element.
(child_info_fork::myself_addr): Ditto.
* dcrt0.cc (dll_crt0_1): Set mount_table and myself_addr when forking.
(initial_env): Add newline to "sleeping" message.
* dll_init.cc (reserve_upto): Accommodate cygwin heap when freeing memory.
Make debugging output a little more descriptive.
* fork.cc (fork_parent): Save mount_table and myself_addr.
* pinfo.cc (myself_addr): New variable.
(set_myself): Pass PID_MYSELF flag to init.
(pinfo::Init): Honor PID_MYSELF.  Save address where myself shared memory
resides in myself_addr, for fork.
* pinfo.h (myself_addr): Declare.
* shared.cc (memory_init): On fork, use previously saved address for location
of mount table.
* include/sys/cygwin.h (PID_MYSELF): New value.
* dtable.cc (dtable::stdio_init): Don't pass access type to
init_std_file_from_handle.  It's always the same.
(dtable::init_std_file_from_handle): Remove access type argument.  Assume
read/write.
* dtable.h (dtable::init_std_file_from_handle): Ditto for declaration.
* exceptions.cc (try_to_debug): Don't try to debug if already being debugged.
* fhandler_console.cc (shared_console_info_save): New variable.
(fhandler_console::get_tty_stuff): Save address of shared console stuff for
fork.

winsup/cygwin/shared.cc

@@ -27,8 +27,8 @@ details. */
 #include "registry.h"
 #include "cygwin_version.h"
 
-shared_info NO_COPY *cygwin_shared = NULL;
-mount_info NO_COPY *mount_table = NULL;
+shared_info NO_COPY *cygwin_shared;
+mount_info NO_COPY *mount_table;
 HANDLE NO_COPY cygwin_mount_h;
 
 char * __stdcall
@@ -145,8 +145,8 @@ memory_init ()
   getpagesize ();
   heap_init ();
   mount_table = (mount_info *) open_shared (user_name, MOUNT_VERSION,
-					    cygwin_mount_h,
-					    sizeof (mount_info), 0);
+					    cygwin_mount_h, sizeof (mount_info),
+					    mount_table);
   debug_printf ("opening mount table for '%s' at %p", cygheap->user.name (),
 		mount_table_address);
   ProtectHandleINH (cygwin_mount_h);