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/********************************************************/
/* ntapi: Native API core library */
/* Copyright (C) 2013--2017 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.NTAPI. */
/********************************************************/
#include <psxtypes/psxtypes.h>
#include <ntapi/nt_atomic.h>
#include <ntapi/nt_status.h>
#include <ntapi/nt_object.h>
#include <ntapi/nt_memory.h>
#include <ntapi/nt_thread.h>
#include <ntapi/nt_process.h>
#include <ntapi/ntapi.h>
#include "ntapi_impl.h"
static intptr_t __fork_retry_stats = 0;
static intptr_t __fork_resume_stats = 0;
static intptr_t __fastcall __ntapi_tt_fork_finalize(
void ** hprocess,
void ** hthread)
{
int32_t status;
nt_oa oa;
nt_cid cid;
int page;
ntapi_internals * __internals;
__internals = __ntapi_internals();
*hprocess = 0;
*hthread = 0;
oa.len = sizeof(oa);
oa.root_dir = 0;
oa.obj_name = 0;
oa.obj_attr = 0;
oa.sec_desc = &__internals->seq_desc;
oa.sec_qos = &__internals->seq_qos;
cid.process_id = pe_get_current_process_id();
cid.thread_id = pe_get_current_thread_id();
if ((status = __ntapi->zw_open_process(
hprocess,
NT_PROCESS_ALL_ACCESS,
&oa,&cid)))
return status;
if ((status = __ntapi->zw_open_thread(
hthread,
NT_THREAD_ALL_ACCESS,
&oa,&cid)))
return status;
if ((status = dalist_init_ex(
&__internals->ipc_conns,
sizeof(nt_ipc_conn),
NT_ALLOCATION_GRANULARITY,
__ntapi_ipc_page_alloc,
DALIST_MEMFN_CUSTOM)))
return status;
dalist_deposit_memory_block(
&__internals->ipc_conns,
__internals->ntapi_img_sec_bss->ipc_buffer,
__NT_BSS_IPC_BUFFER_SIZE);
for (page=0; __internals->ipc_page; page++)
dalist_deposit_memory_block(
&__internals->ipc_conns,
__internals->ipc_pages[page],
NT_ALLOCATION_GRANULARITY);
return 0;
}
static int32_t __stdcall __fork_thread(void * ctx)
{
intptr_t * pstate;
intptr_t state;
void * hready;
pstate = (intptr_t *)ctx;
state = *pstate;
hready = (void *)state;
at_store(
pstate,
0);
return __ntapi->zw_terminate_thread(
NT_CURRENT_THREAD_HANDLE,
__ntapi->zw_set_event(
hready,0));
}
static intptr_t __fastcall __ntapi_tt_fork_child(
void * hresumed,
void * hready)
{
int32_t status;
nt_thread_params tparams;
nt_timeout timeout;
nt_timeout zerowait;
intptr_t state;
at_store(
&state,
(intptr_t)hready);
__ntapi->tt_aligned_block_memset(
&tparams,0,sizeof(tparams));
tparams.start = __fork_thread;
tparams.arg = &state;
tparams.stack_size_commit = 0x10000;
tparams.stack_size_reserve = 0x20000;
status = __ntapi->tt_create_local_thread(
&tparams);
__ntapi->zw_set_event(
hresumed,0);
if (status)
__ntapi->zw_terminate_process(
NT_CURRENT_PROCESS_HANDLE,
status);
if (!state) {
__ntapi->zw_close(hresumed);
__ntapi->zw_close(hready);
__ntapi->zw_close(tparams.hthread);
return 0;
}
timeout.quad = (-1) * 10 * 1000 * 250;
status = __ntapi->zw_wait_for_single_object(
hready,
NT_SYNC_NON_ALERTABLE,
&timeout);
if (status == NT_STATUS_SUCCESS) {
__ntapi->zw_close(hresumed);
__ntapi->zw_close(hready);
__ntapi->zw_close(tparams.hthread);
return 0;
}
__ntapi->zw_terminate_thread(
tparams.hthread,
NT_STATUS_MORE_PROCESSING_REQUIRED);
zerowait.quad = 0;
status = __ntapi->zw_wait_for_single_object(
hready,
NT_SYNC_NON_ALERTABLE,
&zerowait);
if (status == NT_STATUS_SUCCESS) {
__ntapi->zw_close(hresumed);
__ntapi->zw_close(hready);
__ntapi->zw_close(tparams.hthread);
return 0;
}
return __ntapi->zw_terminate_process(
NT_CURRENT_PROCESS_HANDLE,
status);
}
static intptr_t __fastcall __ntapi_tt_fork_parent(
void ** hprocess,
void ** hthread,
void * hresumed,
void * hready)
{
int32_t status;
nt_timeout timeout;
nt_timeout zerowait;
uint32_t prev;
__ntapi->zw_wait_for_single_object(
hresumed,
NT_SYNC_NON_ALERTABLE,
0);
timeout.quad = (-1) * 10 * 1000 * 500;
status = __ntapi->zw_wait_for_single_object(
hready,
NT_SYNC_NON_ALERTABLE,
&timeout);
if (status == NT_STATUS_SUCCESS) {
__ntapi->zw_close(hresumed);
__ntapi->zw_close(hready);
return NT_STATUS_SUCCESS;
}
__ntapi->zw_suspend_thread(
*hthread,&prev);
zerowait.quad = 0;
status = __ntapi->zw_wait_for_single_object(
hready,
NT_SYNC_NON_ALERTABLE,
&zerowait);
if (status == NT_STATUS_SUCCESS) {
at_locked_inc(
&__fork_resume_stats);
__ntapi->zw_resume_thread(
*hthread,0);
__ntapi->zw_close(hresumed);
__ntapi->zw_close(hready);
return NT_STATUS_SUCCESS;
}
at_locked_inc(
&__fork_retry_stats);
__ntapi->zw_terminate_process(
*hprocess,
status);
__ntapi->zw_close(*hprocess);
__ntapi->zw_close(*hthread);
return status;
}
intptr_t __fastcall __ntapi_tt_fork(
__out void ** hprocess,
__out void ** hthread)
{
int32_t status;
intptr_t pid;
void * hresumed;
void * hready;
int i;
if ((status = __ntapi->tt_create_inheritable_event(
&hresumed,
NT_NOTIFICATION_EVENT,
NT_EVENT_NOT_SIGNALED)))
return -1;
if ((status = __ntapi->tt_create_inheritable_event(
&hready,
NT_NOTIFICATION_EVENT,
NT_EVENT_NOT_SIGNALED)))
return -1;
for (i=0; i<32; i++) {
if (__ntapi->zw_create_user_process)
pid = __ntapi_tt_fork_v2(hprocess,hthread);
else
pid = __ntapi_tt_fork_v2(hprocess,hthread);
if (pid == 0) {
__ntapi_tt_fork_child(
hresumed,hready);
return __ntapi_tt_fork_finalize(
hprocess,hthread);
} else if (pid > 0) {
if (!(__ntapi_tt_fork_parent(
hprocess,hthread,
hresumed,hready)))
return pid;
} else {
__ntapi->zw_close(hresumed);
__ntapi->zw_close(hready);
return -1;
}
}
__ntapi->zw_close(hresumed);
__ntapi->zw_close(hready);
return -1;
}
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