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-rw-r--r--src/internal/ntapi.c3
-rw-r--r--src/internal/ntapi_fnapi.h1
-rw-r--r--src/process/ntapi_tt_fork.c230
3 files changed, 232 insertions, 2 deletions
diff --git a/src/internal/ntapi.c b/src/internal/ntapi.c
index 8ebdf22..fe928ac 100644
--- a/src/internal/ntapi.c
+++ b/src/internal/ntapi.c
@@ -211,6 +211,7 @@ static int32_t __fastcall __ntapi_init_once(ntapi_vtbl ** pvtbl)
__ntapi->tt_create_thread = __ntapi_tt_create_thread;
/* nt_process.h */
+ __ntapi->tt_fork = __ntapi_tt_fork;
__ntapi->tt_create_remote_process_params = __ntapi_tt_create_remote_process_params;
__ntapi->tt_spawn_native_process = __ntapi_tt_spawn_native_process;
__ntapi->tt_get_runtime_data = __ntapi_tt_get_runtime_data;
@@ -361,7 +362,6 @@ static int32_t __fastcall __ntapi_init_once(ntapi_vtbl ** pvtbl)
/* OS version dependent functions */
if (__ntapi->zw_create_user_process) {
- __ntapi->tt_fork = __ntapi_tt_fork_v2;
__ntapi->tt_create_native_process = __ntapi_tt_create_native_process_v2;
__ntapi->ipc_create_pipe = __ntapi_ipc_create_pipe_v2;
__ntapi->sc_socket = __ntapi_sc_socket_v2;
@@ -371,7 +371,6 @@ static int32_t __fastcall __ntapi_init_once(ntapi_vtbl ** pvtbl)
__ntapi->sc_getsockname = __ntapi_sc_getsockname_v2;
__ntapi->sc_getpeername = __ntapi_sc_getpeername_v2;
} else {
- __ntapi->tt_fork = __ntapi_tt_fork_v1;
__ntapi->tt_create_native_process = __ntapi_tt_create_native_process_v1;
__ntapi->ipc_create_pipe = __ntapi_ipc_create_pipe_v1;
__ntapi->sc_socket = __ntapi_sc_socket_v1;
diff --git a/src/internal/ntapi_fnapi.h b/src/internal/ntapi_fnapi.h
index ee291ff..650839e 100644
--- a/src/internal/ntapi_fnapi.h
+++ b/src/internal/ntapi_fnapi.h
@@ -94,6 +94,7 @@ ntapi_tt_create_local_thread __ntapi_tt_create_local_thread;
ntapi_tt_create_remote_thread __ntapi_tt_create_remote_thread;
/* nt_process.h */
+ntapi_tt_fork __ntapi_tt_fork;
ntapi_tt_fork __ntapi_tt_fork_v1;
ntapi_tt_fork __ntapi_tt_fork_v2;
ntapi_tt_create_remote_process_params __ntapi_tt_create_remote_process_params;
diff --git a/src/process/ntapi_tt_fork.c b/src/process/ntapi_tt_fork.c
new file mode 100644
index 0000000..9f498eb
--- /dev/null
+++ b/src/process/ntapi_tt_fork.c
@@ -0,0 +1,230 @@
+/********************************************************/
+/* ntapi: Native API core library */
+/* Copyright (C) 2013--2016 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 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) {
+ return __ntapi_tt_fork_child(
+ hresumed,hready);
+
+ } 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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 13:45:39 +0000