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/* childinfo.h: shared child info for cygwin
Copyright 2000 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include <setjmp.h>
enum
{
PROC_MAGIC = 0xaf0df000,
PROC_FORK = PROC_MAGIC + 1,
PROC_EXEC = PROC_MAGIC + 2,
PROC_SPAWN = PROC_MAGIC + 3,
PROC_FORK1 = PROC_MAGIC + 4, // Newer versions provide stack
// location information
PROC_SPAWN1 = PROC_MAGIC + 5
};
#define PROC_MAGIC_MASK 0xff00f000
#define PROC_MAGIC_GENERIC 0xaf00f000
#define PROC_MAGIC_VER_MASK 0x0ff0000
#define EXEC_MAGIC_SIZE sizeof(child_info)
class child_info
{
public:
DWORD zero[1]; // must be zeroed
DWORD cb; // size of this record
DWORD type; // type of record
int cygpid; // cygwin pid of child process
HANDLE subproc_ready; // used for synchronization with parent
HANDLE mount_h;
HANDLE parent;
HANDLE pppid_handle;
init_cygheap *cygheap;
void *cygheap_max;
};
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;
jmp_buf jmp; // where child will jump to
void *stacktop; // location of top of parent stack
void *stackbottom; // location of bottom of parent stack
};
class fhandler_base;
class cygheap_exec_info
{
public:
uid_t uid;
char *old_title;
fhandler_base **fds;
size_t nfds;
int argc;
char **argv;
int envc;
char **envp;
HANDLE myself_pinfo;
char *cwd_posix;
char *cwd_win32;
DWORD cwd_hash;
};
class child_info_spawn: public child_info
{
public:
cygheap_exec_info *moreinfo;
HANDLE hexec_proc;
child_info_spawn (): moreinfo (NULL) {}
~child_info_spawn ()
{
if (parent)
CloseHandle (parent);
if (moreinfo)
{
if (moreinfo->old_title)
cfree (moreinfo->old_title);
if (moreinfo->cwd_posix)
cfree (moreinfo->cwd_posix);
if (moreinfo->cwd_win32)
cfree (moreinfo->cwd_win32);
if (moreinfo->envp)
{
for (char **e = moreinfo->envp; *e; e++)
cfree (*e);
cfree (moreinfo->envp);
}
CloseHandle (moreinfo->myself_pinfo);
cfree (moreinfo);
}
}
};
void __stdcall init_child_info (DWORD, child_info *, int, HANDLE);
extern child_info_fork *child_proc_info;
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