* 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.

1 files changed, 6 insertions, 4 deletions

diff --git a/winsup/cygwin/child_info.h b/winsup/cygwin/child_info.h
index 1aca724..4cc09b7 100644
--- a/winsup/cygwin/child_info.h
+++ b/winsup/cygwin/child_info.h
@@ -29,7 +29,7 @@ enum
 
 #define EXEC_MAGIC_SIZE sizeof(child_info)
 
-#define CURR_CHILD_INFO_MAGIC 0xb3836013U
+#define CURR_CHILD_INFO_MAGIC 0x64848c11U
 
 /* NOTE: Do not make gratuitous changes to the names or organization of the
    below class.  The layout is checksummed to determine compatibility between
@@ -53,14 +53,16 @@ public:
   unsigned fhandler_union_cb;
 };
 
+class mount_info;
+class _pinfo;
+
 class child_info_fork: public child_info
 {
 public:
   HANDLE forker_finished;// for synchronization with child
   DWORD stacksize;	// size of parent stack
-  void *heaptop;
-  void *heapbase;
-  void *heapptr;
+  mount_info *mount_table;// location of mount table in parent
+  _pinfo *myself_addr;	// where myself shared memory lives in the parent
   jmp_buf jmp;		// where child will jump to
   void *stacktop;	// location of top of parent stack
   void *stackbottom;	// location of bottom of parent stack