[PATCH 0/1] MR1356: ntdll: Delay loading unixlibs until the functions are requested.

[Rémi Bernon (＠rbernon)]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53909

[PATCH 1/1] ntdll: Delay loading unixlibs until the functions are requested.

[Rémi Bernon]

From: Rémi Bernon

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53909
---
 dlls/ntdll/unix/virtual.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/dlls/ntdll/unix/virtual.c b/dlls/ntdll/unix/virtual.c
index 3367913d4e2..5dd482c0dbb 100644
--- a/dlls/ntdll/unix/virtual.c
+++ b/dlls/ntdll/unix/virtual.c
@@ -98,6 +98,7 @@ struct builtin_module
     unsigned int refcount;
     void        *handle;
     void        *module;
+    char        *unix_path;
     void        *unix_handle;
 };

@@ -583,6 +584,7 @@ static void add_builtin_module( void *module, void *handle )
     builtin->handle      = handle;
     builtin->module      = module;
     builtin->refcount    = 1;
+    builtin->unix_path   = NULL;
     builtin->unix_handle = NULL;
     list_add_tail( &builtin_modules, &builtin->entry );
 }
@@ -603,6 +605,7 @@ void release_builtin_module( void *module )
             list_remove( &builtin->entry );
             if (builtin->handle) dlclose( builtin->handle );
             if (builtin->unix_handle) dlclose( builtin->unix_handle );
+            free( builtin->unix_path );
             free( builtin );
         }
         break;
@@ -652,6 +655,8 @@ static NTSTATUS get_builtin_unix_funcs( void *module, BOOL wow, const void **fun
     LIST_FOR_EACH_ENTRY( builtin, &builtin_modules, struct builtin_module, entry )
     {
         if (builtin->module != module) continue;
+        if (builtin->unix_path && !builtin->unix_handle)
+            builtin->unix_handle = dlopen( builtin->unix_path, RTLD_NOW );
         if (builtin->unix_handle)
         {
             *funcs = dlsym( builtin->unix_handle, ptr_name );
@@ -669,26 +674,19 @@ static NTSTATUS get_builtin_unix_funcs( void *module, BOOL wow, const void **fun
  */
 NTSTATUS load_builtin_unixlib( void *module, const char *name )
 {
-    void *handle;
     sigset_t sigset;
-    NTSTATUS status = STATUS_DLL_NOT_FOUND;
+    NTSTATUS status = STATUS_SUCCESS;
     struct builtin_module *builtin;

-    if (!(handle = dlopen( name, RTLD_NOW ))) return status;
     server_enter_uninterrupted_section( &virtual_mutex, &sigset );
     LIST_FOR_EACH_ENTRY( builtin, &builtin_modules, struct builtin_module, entry )
     {
         if (builtin->module != module) continue;
-        if (!builtin->unix_handle)
-        {
-            builtin->unix_handle = handle;
-            status = STATUS_SUCCESS;
-        }
+        if (!builtin->unix_path) builtin->unix_path = strdup( name );
         else status = STATUS_IMAGE_ALREADY_LOADED;
         break;
     }
     server_leave_uninterrupted_section( &virtual_mutex, &sigset );
-    if (status) dlclose( handle );
     return status;
 }

[PATCH 1/1] ntdll: Delay loading unixlibs until the functions are requested.

[Marvin]

Hi,

It looks like your patch introduced the new failures shown below.
Please investigate and fix them before resubmitting your patch.
If they are not new, fixing them anyway would help a lot. Otherwise
please ask for the known failures list to be updated.

The tests also ran into some preexisting test failures. If you know how
to fix them that would be helpful. See the TestBot job for the details:

The full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=126134

Your paranoid android.

=== debian11 (32 bit report) ===

crypt32:
cert.c:4191: Test failed: success
cert.c:4192: Test failed: got 00000000
cert.c:4193: Test failed: got 00000000

Report validation errors:
advapi32:security has no test summary line (early exit of the main process?)
advapi32:security has unaccounted for todo messages

[Rémi Bernon (＠rbernon)]

Alternatively, as `load_builtin_unixlib` return value is ignored, I think we could keep calling dlopen there, and also try again when the functions are requested.