From: Oleh Nykyforchyn Subject: [PATCH 1/2] server: Return a fake mapping with WineFakeDll flag set for a fake 16 bit dll. Message-Id: <20211014112845.25330-1-olen.nyk@gmail.com> Date: Thu, 14 Oct 2021 14:28:44 +0300 If fake 16 bit dll is found by create_mapping and status is set to STATUS_IMAGE_INVALID_WIN_16, do not release the mapping, but return it with WineFakeDll flag set to allow ntdll properly discover this dll by NtCreateSection and handle by find_dll_file. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=51564 Signed-off-by: Oleh Nykyforchyn --- server/mapping.c | 31 +++++++++++++++++++++++-------- 1 file changed, 23 insertions(+), 8 deletions(-) diff --git a/server/mapping.c b/server/mapping.c index 93dae94b7c4..8016feaf432 100644 --- a/server/mapping.c +++ b/server/mapping.c @@ -697,6 +697,13 @@ static unsigned int get_image_params( struct mapping *mapping, file_pos_t file_s mz_size = size; pos = mz.dos.e_lfanew; + mapping->image.image_flags = 0; + mapping->image.loader_flags = 0; + if (mz_size == sizeof(mz) && !memcmp( mz.buffer, builtin_signature, sizeof(builtin_signature) )) + mapping->image.image_flags |= IMAGE_FLAGS_WineBuiltin; + else if (mz_size == sizeof(mz) && !memcmp( mz.buffer, fakedll_signature, sizeof(fakedll_signature) )) + mapping->image.image_flags |= IMAGE_FLAGS_WineFakeDll; + size = pread( unix_fd, &nt, sizeof(nt), pos ); if (size < sizeof(nt.Signature) + sizeof(nt.FileHeader)) return STATUS_INVALID_IMAGE_PROTECT; /* zero out Optional header in the case it's not present or partial */ @@ -707,7 +714,11 @@ static unsigned int get_image_params( struct mapping *mapping, file_pos_t file_s { IMAGE_OS2_HEADER *os2 = (IMAGE_OS2_HEADER *)&nt; if (os2->ne_magic != IMAGE_OS2_SIGNATURE) return STATUS_INVALID_IMAGE_PROTECT; - if (os2->ne_exetyp == 2) return STATUS_INVALID_IMAGE_WIN_16; + if (os2->ne_exetyp == 2) + { + mapping->image.machine = IMAGE_FILE_MACHINE_I386; + return STATUS_INVALID_IMAGE_WIN_16; + } if (os2->ne_exetyp == 5) return STATUS_INVALID_IMAGE_PROTECT; return STATUS_INVALID_IMAGE_NE_FORMAT; } @@ -737,7 +748,6 @@ static unsigned int get_image_params( struct mapping *mapping, file_pos_t file_s nt.opt.hdr32.SectionAlignment & page_mask); mapping->image.header_size = nt.opt.hdr32.SizeOfHeaders; mapping->image.checksum = nt.opt.hdr32.CheckSum; - mapping->image.image_flags = 0; if (nt.opt.hdr32.SectionAlignment & page_mask) mapping->image.image_flags |= IMAGE_FLAGS_ImageMappedFlat; if ((nt.opt.hdr32.DllCharacteristics & IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE) && @@ -769,7 +779,6 @@ static unsigned int get_image_params( struct mapping *mapping, file_pos_t file_s nt.opt.hdr64.SectionAlignment & page_mask); mapping->image.header_size = nt.opt.hdr64.SizeOfHeaders; mapping->image.checksum = nt.opt.hdr64.CheckSum; - mapping->image.image_flags = 0; if (nt.opt.hdr64.SectionAlignment & page_mask) mapping->image.image_flags |= IMAGE_FLAGS_ImageMappedFlat; if ((nt.opt.hdr64.DllCharacteristics & IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE) && @@ -788,10 +797,6 @@ static unsigned int get_image_params( struct mapping *mapping, file_pos_t file_s mapping->image.zerobits = 0; /* FIXME */ mapping->image.file_size = file_size; mapping->image.loader_flags = clr_va && clr_size; - if (mz_size == sizeof(mz) && !memcmp( mz.buffer, builtin_signature, sizeof(builtin_signature) )) - mapping->image.image_flags |= IMAGE_FLAGS_WineBuiltin; - else if (mz_size == sizeof(mz) && !memcmp( mz.buffer, fakedll_signature, sizeof(fakedll_signature) )) - mapping->image.image_flags |= IMAGE_FLAGS_WineFakeDll; /* load the section headers */ @@ -920,7 +925,11 @@ static struct mapping *create_mapping( struct object *root, const struct unicode unsigned int err = get_image_params( mapping, st.st_size, unix_fd ); if (!err) return mapping; set_error( err ); - goto error; + /* return fake mapping to discover fake 16 bit dll */ + if ((err == STATUS_INVALID_IMAGE_WIN_16) && (mapping->image.image_flags & IMAGE_FLAGS_WineFakeDll)) + return mapping; + else + goto error; } if (!mapping->size) { @@ -1106,6 +1115,12 @@ struct object *create_user_data_mapping( struct object *root, const struct unico if (!(mapping = create_mapping( root, name, attr, sizeof(KSHARED_USER_DATA), SEC_COMMIT, 0, FILE_READ_DATA | FILE_WRITE_DATA, sd ))) return NULL; + /* FIXME: is this necessary? */ + if ((get_error() == STATUS_INVALID_IMAGE_WIN_16) && (mapping->image.image_flags & IMAGE_FLAGS_WineFakeDll)) + { + release_object( mapping ); + return NULL; + } ptr = mmap( NULL, mapping->size, PROT_WRITE, MAP_SHARED, get_unix_fd( mapping->fd ), 0 ); if (ptr != MAP_FAILED) { -- 2.33.0