Improved map with fd tracking

ptitSeb · Jan 29, 2025 · 96bca6e · 96bca6e
1 parent ed7147e
commit 96bca6e
Showing 1 changed file with 10 additions and 9 deletions.
diff --git a/src/wrapped/wrappedlibc.c b/src/wrapped/wrappedlibc.c
@@ -3006,16 +3006,17 @@ EXPORT void* my_mmap64(x64emu_t* emu, void *addr, size_t length, int prot, int f
                 if((BOX64ENV(log)>=LOG_DEBUG || BOX64ENV(dynarec_log)>=LOG_DEBUG)) {printf_log(LOG_NONE, "Note: Marking the region (%p-%p prot=%x) as NEVERCLEAN because fd have O_RDWR attribute\n", ret, ret+length, prot);}
                 prot |= PROT_NEVERCLEAN;
             }
+            if(emu) {
+                DetectUnityPlayer(fd);
+                // the last_mmap will allow mmap created by wine, even those that have hole, to be fully tracked as one single mmap
+                if((ret>=last_mmap_addr) && ret+length<(last_mmap_addr+last_mmap_len))
+                    RecordEnvMappings((uintptr_t)last_mmap_addr, last_mmap_len, fd);
+                else
+                    RecordEnvMappings((uintptr_t)ret, length, fd);
+            }
         }
-        if(fd>0) {
-            DetectUnityPlayer(fd);
-            // the last_mmap will allow mmap created by wine, even those that have hole, to be fully tracked as one single mmap
-            if((ret>=last_mmap_addr) && ret+length<(last_mmap_addr+last_mmap_len))
-                RecordEnvMappings((uintptr_t)last_mmap_addr, last_mmap_len, fd);
-            else
-                RecordEnvMappings((uintptr_t)ret, length, fd);
-        }
-        if((fd==-1) && (flags==(MAP_PRIVATE|MAP_ANON))) {
+        // hack to capture full size of the mmap done by wine
+        if(emu && (fd==-1) && (flags==(MAP_PRIVATE|MAP_ANON))) {
             last_mmap_addr = ret;
             last_mmap_len = length;
         } else {