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Unprotect Import Address Table while filling it.

This commit is contained in:
Filip Navara 2004-06-22 02:07:47 +00:00 committed by Alexandre Julliard
parent 4e0b582903
commit fc51760f48
1 changed files with 16 additions and 1 deletions
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17
dlls/ntdll/loader.c
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@ -373,6 +373,9 @@ static WINE_MODREF *import_dll( HMODULE module, const IMAGE_IMPORT_DESCRIPTOR *d
WCHAR buffer[32];
const char *name = get_rva( module, descr->Name );
DWORD len = strlen(name) + 1;
PVOID protect_base;
DWORD protect_size = 0;
DWORD protect_old;
thunk_list = get_rva( module, (DWORD)descr->FirstThunk );
if (descr->u.OriginalFirstThunk)
@ -405,6 +408,14 @@ static WINE_MODREF *import_dll( HMODULE module, const IMAGE_IMPORT_DESCRIPTOR *d
return NULL;
}
/* unprotect the import address table since it can be located in
* readonly section */
while (import_list[protect_size].u1.Ordinal) protect_size++;
protect_base = thunk_list;
protect_size *= sizeof(*thunk_list);
NtProtectVirtualMemory( GetCurrentProcess(), &protect_base,
&protect_size, PAGE_WRITECOPY, &protect_old );
imp_mod = wmImp->ldr.BaseAddress;
exports = RtlImageDirectoryEntryToData( imp_mod, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size );
@ -429,7 +440,7 @@ static WINE_MODREF *import_dll( HMODULE module, const IMAGE_IMPORT_DESCRIPTOR *d
import_list++;
thunk_list++;
}
return wmImp;
goto done;
}
while (import_list->u1.Ordinal)
@ -465,6 +476,10 @@ static WINE_MODREF *import_dll( HMODULE module, const IMAGE_IMPORT_DESCRIPTOR *d
import_list++;
thunk_list++;
}
done:
/* restore old protection of the import address table */
NtProtectVirtualMemory( GetCurrentProcess(), &protect_base, &protect_size, protect_old, NULL );
return wmImp;
}