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authormidipix <writeonce@midipix.org>2020-06-19 22:24:12 +0000
committermidipix <writeonce@midipix.org>2020-06-19 22:25:36 +0000
commit0fda85780bd51c982622f3baf70701d4d032bbc6 (patch)
tree67ef2889c267cf9a1e299471699ff6f758485426 /src
parentabd389de79a2dcd5e139f2f52fba8b43c4ef42e9 (diff)
downloadntapi-0fda85780bd51c982622f3baf70701d4d032bbc6.tar.bz2
ntapi-0fda85780bd51c982622f3baf70701d4d032bbc6.tar.xz
internals: __ntapi_init_solib_fork_child_finalize() [rare use-case support].
Diffstat (limited to 'src')
-rw-r--r--src/internal/ntapi.c84
1 files changed, 83 insertions, 1 deletions
diff --git a/src/internal/ntapi.c b/src/internal/ntapi.c
index b1d282d..7562b35 100644
--- a/src/internal/ntapi.c
+++ b/src/internal/ntapi.c
@@ -588,6 +588,88 @@ static int32_t __fastcall __ntapi_init_once(ntapi_vtbl ** pvtbl)
return NT_STATUS_SUCCESS;
}
+static int32_t __ntapi_init_solib_fork_child_finalize(void)
+{
+ int32_t status;
+ int page;
+ nt_rtdata * rtdata;
+ nt_oa oa;
+ ntapi_internals * __internals;
+
+ /* detect the rare scenario where libntapi.so is (indirectly) */
+ /* used by a hosted process, in which case post-fork adjustments */
+ /* to internal structures would take place in the copy of ntapi */
+ /* that is statically linked into the system call layer */
+ /* library, thereby requiring similar adjustmets to be made */
+ /* once here as well. */
+
+ __internals = __ntapi_internals();
+ rtdata = __internals->rtdata;
+
+ if (rtdata->cid_self.process_id == pe_get_current_process_id())
+ return NT_STATUS_SUCCESS;
+
+ rtdata->cid_parent.process_id = rtdata->cid_self.process_id;
+ rtdata->cid_parent.thread_id = rtdata->cid_self.thread_id;
+
+ rtdata->cid_self.process_id = pe_get_current_process_id();
+ rtdata->cid_self.thread_id = pe_get_current_thread_id();
+
+ if (rtdata->hparent)
+ __ntapi->zw_close(rtdata->hparent);
+
+ 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;
+
+ status = __ntapi->zw_open_process(
+ &__internals->hprocess,
+ NT_PROCESS_ALL_ACCESS,
+ &oa,&rtdata->cid_self);
+
+ rtdata->hparent = rtdata->hself;
+ rtdata->hself = __internals->hprocess;
+
+ 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; page<__internals->ipc_page; page++)
+ dalist_deposit_memory_block(
+ &__internals->ipc_conns,
+ __internals->ipc_pages[page],
+ NT_ALLOCATION_GRANULARITY);
+
+ rtdata->hsemctl = 0;
+ rtdata->hsempid = 0;
+
+ rtdata->hmsqctl = 0;
+ rtdata->hmsqpid = 0;
+
+ rtdata->haflctl = 0;
+ rtdata->haflpid = 0;
+
+ rtdata->ipc_keys[0] = 0;
+ rtdata->ipc_keys[1] = 0;
+ rtdata->ipc_keys[2] = 0;
+ rtdata->ipc_keys[3] = 0;
+ rtdata->ipc_keys[4] = 0;
+ rtdata->ipc_keys[5] = 0;
+
+ return 0;
+}
static int32_t __fastcall __ntapi_init_pending(ntapi_vtbl ** pvtbl)
{
@@ -598,7 +680,7 @@ static int32_t __fastcall __ntapi_init_pending(ntapi_vtbl ** pvtbl)
static int32_t __fastcall __ntapi_init_completed(ntapi_vtbl ** pvtbl)
{
*pvtbl = &___ntapi_shadow;
- return NT_STATUS_SUCCESS;
+ return __ntapi_init_solib_fork_child_finalize();
};