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ntdll: Reject NT path names that are not in canonical form.
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard
parent
302d44004e
commit
405666b736
2 changed files with 144 additions and 47 deletions
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@ -31,6 +31,7 @@ static BOOLEAN (WINAPI *pRtlIsNameLegalDOS8Dot3)(const UNICODE_STRING*,POEM_STRI
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static DWORD (WINAPI *pRtlGetFullPathName_U)(const WCHAR*,ULONG,WCHAR*,WCHAR**);
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static BOOLEAN (WINAPI *pRtlDosPathNameToNtPathName_U)(const WCHAR*, UNICODE_STRING*, WCHAR**, CURDIR*);
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static NTSTATUS (WINAPI *pRtlDosPathNameToNtPathName_U_WithStatus)(const WCHAR*, UNICODE_STRING*, WCHAR**, CURDIR*);
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static NTSTATUS (WINAPI *pNtOpenFile)( HANDLE*, ACCESS_MASK, OBJECT_ATTRIBUTES*, IO_STATUS_BLOCK*, ULONG, ULONG );
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static void test_RtlDetermineDosPathNameType_U(void)
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{
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@ -619,6 +620,95 @@ static void test_RtlDosPathNameToNtPathName_U(void)
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SetCurrentDirectoryA(curdir);
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}
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static void test_nt_names(void)
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{
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static const struct { const WCHAR *root, *name; NTSTATUS expect; BOOL todo; } tests[] =
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{
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{ NULL, L"\\??\\C:\\windows\\system32\\kernel32.dll", STATUS_SUCCESS },
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{ NULL, L"\\??\\C:\\\\windows\\system32\\kernel32.dll", STATUS_OBJECT_NAME_INVALID },
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{ NULL, L"\\??\\C:\\\\windows\\system32\\", STATUS_OBJECT_NAME_INVALID },
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{ NULL, L"\\??\\C:\\windows\\\\system32\\kernel32.dll", STATUS_OBJECT_NAME_INVALID },
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{ NULL, L"\\??\\C:\\windows\\system32\\.\\kernel32.dll", STATUS_OBJECT_NAME_INVALID },
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{ NULL, L"\\??\\C:\\windows\\system32\\..\\system32\\kernel32.dll", STATUS_OBJECT_NAME_INVALID },
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{ NULL, L"\\??\\C:\\.\\windows\\system32\\kernel32.dll", STATUS_OBJECT_NAME_INVALID },
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{ NULL, L"\\??\\C:\\windows\\system32\\kernel32.dll ", STATUS_OBJECT_NAME_NOT_FOUND },
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{ NULL, L"\\??\\C:\\windows\\system32\\kernel32.dll..", STATUS_OBJECT_NAME_NOT_FOUND },
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{ NULL, L"\\??\\C:\\windows \\system32 \\kernel32.dll", STATUS_OBJECT_PATH_NOT_FOUND },
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{ NULL, L"\\??\\C:\\windows.\\system32.\\kernel32.dll", STATUS_OBJECT_PATH_NOT_FOUND },
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{ NULL, L"\\??\\C:\\windows/system32/kernel32.dll", STATUS_OBJECT_NAME_INVALID },
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{ NULL, L"\\??\\C:\\windows\\system32\\kernel32.dll*", STATUS_OBJECT_NAME_INVALID },
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{ NULL, L"\\??\\C:\\windows\\system32?\\kernel32.dll", STATUS_OBJECT_NAME_INVALID },
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{ NULL, L"C:\\windows\\system32?\\kernel32.dll", STATUS_OBJECT_PATH_SYNTAX_BAD },
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{ NULL, L"/??\\C:\\windows\\system32\\kernel32.dll", STATUS_OBJECT_PATH_SYNTAX_BAD },
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{ NULL, L"\\??" L"/C:\\windows\\system32\\kernel32.dll", STATUS_OBJECT_PATH_NOT_FOUND },
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{ NULL, L"\\??\\C:/windows\\system32\\kernel32.dll", STATUS_OBJECT_PATH_NOT_FOUND },
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{ NULL, L"\\??\\C:\\windows\\system32\\kernel32.dll\\", STATUS_OBJECT_NAME_INVALID, TRUE },
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{ NULL, L"\\??\\C:\\windows\\system32\\kernel32.dll\\foo", STATUS_OBJECT_PATH_NOT_FOUND, TRUE },
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{ NULL, L"\\??\\C:\\windows\\sys\001", STATUS_OBJECT_NAME_INVALID },
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{ L"\\??\\", NULL, STATUS_OBJECT_NAME_INVALID },
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{ L"\\??\\C:\\", NULL, STATUS_SUCCESS },
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{ L"\\??\\C:\\\\", NULL, STATUS_OBJECT_NAME_INVALID },
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{ L"/??\\C:\\", NULL, STATUS_OBJECT_PATH_SYNTAX_BAD },
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{ L"\\??\\C:/", NULL, STATUS_OBJECT_NAME_NOT_FOUND },
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{ L"\\??" L"/C:", NULL, STATUS_OBJECT_NAME_NOT_FOUND },
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{ L"\\??" L"/C:\\", NULL, STATUS_OBJECT_PATH_NOT_FOUND },
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{ L"\\??\\C:\\windows", NULL, STATUS_SUCCESS },
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{ L"\\??\\C:\\windows\\", NULL, STATUS_SUCCESS },
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{ L"\\??\\C:\\windows\\.", NULL, STATUS_OBJECT_NAME_INVALID },
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{ L"\\??\\C:\\windows\\.\\", NULL, STATUS_OBJECT_NAME_INVALID },
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{ L"\\??\\C:\\windows\\..", NULL, STATUS_OBJECT_NAME_INVALID },
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{ L"\\??\\C:\\windows\\..\\", NULL, STATUS_OBJECT_NAME_INVALID },
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{ L"\\??\\C:\\", L"windows\\system32\\kernel32.dll", STATUS_SUCCESS },
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{ L"\\??\\C:\\windows", L"system32\\kernel32.dll", STATUS_SUCCESS },
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{ L"\\??\\C:\\windows\\", L"system32\\kernel32.dll", STATUS_SUCCESS },
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{ L"\\??\\C:\\windows\\", L"system32\\", STATUS_FILE_IS_A_DIRECTORY },
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{ L"\\??\\C:\\windows\\", L"system32\\kernel32.dll\\", STATUS_OBJECT_NAME_INVALID, TRUE },
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{ L"\\??\\C:\\windows\\", L"system32\\kernel32.dll\\foo", STATUS_OBJECT_PATH_NOT_FOUND, TRUE },
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{ L"\\??\\C:\\windows\\", L"\\system32\\kernel32.dll", STATUS_INVALID_PARAMETER },
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{ L"\\??\\C:\\windows\\", L"/system32\\kernel32.dll", STATUS_OBJECT_NAME_INVALID },
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{ L"\\??\\C:\\windows\\", L".\\system32\\kernel32.dll", STATUS_OBJECT_NAME_INVALID },
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{ L"\\??\\C:\\windows\\", L"..\\windows\\system32\\kernel32.dll", STATUS_OBJECT_NAME_INVALID },
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{ L"\\??\\C:\\windows\\", L".", STATUS_OBJECT_NAME_INVALID },
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{ L"\\??\\C:\\windows\\", L"..", STATUS_OBJECT_NAME_INVALID },
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{ L"\\??\\C:\\windows\\", L"sys\001", STATUS_OBJECT_NAME_INVALID },
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{ L"C:\\", L"windows\\system32\\kernel32.dll", STATUS_OBJECT_PATH_SYNTAX_BAD },
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};
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unsigned int i;
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OBJECT_ATTRIBUTES attr;
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UNICODE_STRING nameW;
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IO_STATUS_BLOCK io;
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NTSTATUS status;
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HANDLE handle;
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InitializeObjectAttributes( &attr, &nameW, OBJ_CASE_INSENSITIVE, 0, NULL );
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for (i = 0; i < ARRAY_SIZE(tests); i++)
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{
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attr.RootDirectory = 0;
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handle = 0;
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status = STATUS_SUCCESS;
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if (tests[i].root)
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{
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RtlInitUnicodeString( &nameW, tests[i].root );
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status = pNtOpenFile( &attr.RootDirectory, SYNCHRONIZE | FILE_LIST_DIRECTORY, &attr, &io,
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FILE_SHARE_READ, FILE_SYNCHRONOUS_IO_NONALERT |
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FILE_OPEN_FOR_BACKUP_INTENT | FILE_DIRECTORY_FILE );
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}
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if (!status && tests[i].name)
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{
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RtlInitUnicodeString( &nameW, tests[i].name );
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status = pNtOpenFile( &handle, FILE_GENERIC_READ, &attr, &io, FILE_SHARE_READ,
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FILE_SYNCHRONOUS_IO_NONALERT | FILE_NON_DIRECTORY_FILE );
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}
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if (attr.RootDirectory) NtClose( attr.RootDirectory );
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if (handle) NtClose( handle );
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todo_wine_if( tests[i].todo )
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ok( status == tests[i].expect, "%u: got %x / %x for %s + %s\n", i, status, tests[i].expect,
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debugstr_w( tests[i].root ), debugstr_w( tests[i].name ));
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}
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}
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START_TEST(path)
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{
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HMODULE mod = GetModuleHandleA("ntdll.dll");
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@ -632,10 +722,12 @@ START_TEST(path)
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pRtlGetFullPathName_U = (void *)GetProcAddress(mod,"RtlGetFullPathName_U");
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pRtlDosPathNameToNtPathName_U = (void *)GetProcAddress(mod, "RtlDosPathNameToNtPathName_U");
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pRtlDosPathNameToNtPathName_U_WithStatus = (void *)GetProcAddress(mod, "RtlDosPathNameToNtPathName_U_WithStatus");
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pNtOpenFile = (void *)GetProcAddress(mod, "NtOpenFile");
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test_RtlDetermineDosPathNameType_U();
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test_RtlIsDosDeviceName_U();
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test_RtlIsNameLegalDOS8Dot3();
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test_RtlGetFullPathName_U();
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test_RtlDosPathNameToNtPathName_U();
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test_nt_names();
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}
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@ -1228,13 +1228,9 @@ static BOOL is_hidden_file( const UNICODE_STRING *name )
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if (show_dot_files) return FALSE;
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end = p = name->Buffer + name->Length/sizeof(WCHAR);
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while (p > name->Buffer && IS_SEPARATOR(p[-1])) p--;
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while (p > name->Buffer && !IS_SEPARATOR(p[-1])) p--;
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if (p == end || *p != '.') return FALSE;
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/* make sure it isn't '.' or '..' */
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if (p + 1 == end) return FALSE;
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if (p[1] == '.' && p + 2 == end) return FALSE;
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return TRUE;
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while (p > name->Buffer && p[-1] == '\\') p--;
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while (p > name->Buffer && p[-1] != '\\') p--;
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return (p < end && *p == '.');
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}
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@ -2779,6 +2775,8 @@ static NTSTATUS get_dos_device( char **unix_name, int start_pos )
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/* special case for drive devices */
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if (dev[0] && dev[1] == ':' && !dev[2]) strcpy( dev + 1, "::" );
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if (strchr( dev, '/' )) goto failed;
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for (;;)
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{
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if (!stat( *unix_name, &st ))
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@ -2811,6 +2809,7 @@ static NTSTATUS get_dos_device( char **unix_name, int start_pos )
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if (!new_name) return STATUS_BAD_DEVICE_TYPE;
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dev = NULL; /* last try */
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}
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failed:
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free( *unix_name );
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*unix_name = NULL;
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return STATUS_BAD_DEVICE_TYPE;
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@ -3090,22 +3089,42 @@ done:
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* Helper for nt_to_unix_file_name
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*/
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static NTSTATUS lookup_unix_name( const WCHAR *name, int name_len, char **buffer, int unix_len, int pos,
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UINT disposition, BOOLEAN check_case )
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UINT disposition, BOOL is_unix )
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{
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static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, '/', 0 };
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NTSTATUS status;
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int ret, len;
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struct stat st;
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char *unix_name = *buffer;
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const WCHAR *ptr, *end;
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const BOOL redirect = NtCurrentTeb64() && !NtCurrentTeb64()->TlsSlots[WOW64_TLS_FILESYSREDIR];
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/* try a shortcut first */
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/* check syntax of individual components */
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while (name_len && IS_SEPARATOR(*name))
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for (ptr = name, end = name + name_len; ptr < end; ptr++)
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{
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name++;
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name_len--;
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if (*ptr == '\\') return STATUS_OBJECT_NAME_INVALID; /* duplicate backslash */
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if (*ptr == '.')
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{
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if (ptr + 1 == end) return STATUS_OBJECT_NAME_INVALID; /* "." element */
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if (ptr[1] == '\\') return STATUS_OBJECT_NAME_INVALID; /* "." element */
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if (ptr[1] == '.')
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{
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if (ptr + 2 == end) return STATUS_OBJECT_NAME_INVALID; /* ".." element */
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if (ptr[2] == '\\') return STATUS_OBJECT_NAME_INVALID; /* ".." element */
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}
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}
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/* check for invalid characters (all chars except 0 are valid for unix) */
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for ( ; ptr < end && *ptr != '\\'; ptr++)
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{
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if (!*ptr) return STATUS_OBJECT_NAME_INVALID;
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if (is_unix) continue;
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if (*ptr < 32 || wcschr( invalid_charsW, *ptr )) return STATUS_OBJECT_NAME_INVALID;
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}
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}
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/* try a shortcut first */
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unix_name[pos] = '/';
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ret = ntdll_wcstoumbs( name, name_len, unix_name + pos + 1, unix_len - pos - 1, TRUE );
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if (ret >= 0 && ret < unix_len - pos - 1)
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@ -3126,7 +3145,7 @@ static NTSTATUS lookup_unix_name( const WCHAR *name, int name_len, char **buffer
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if (!name_len) /* empty name -> drive root doesn't exist */
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return STATUS_OBJECT_PATH_NOT_FOUND;
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if (check_case && !redirect && (disposition == FILE_OPEN || disposition == FILE_OVERWRITE))
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if (is_unix && !redirect && (disposition == FILE_OPEN || disposition == FILE_OVERWRITE))
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return STATUS_OBJECT_NAME_NOT_FOUND;
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/* now do it component by component */
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@ -3137,9 +3156,9 @@ static NTSTATUS lookup_unix_name( const WCHAR *name, int name_len, char **buffer
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BOOLEAN is_win_dir = FALSE;
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end = name;
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while (end < name + name_len && !IS_SEPARATOR(*end)) end++;
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while (end < name + name_len && *end != '\\') end++;
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next = end;
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while (next < name + name_len && IS_SEPARATOR(*next)) next++;
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if (next < name + name_len) next++;
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name_len -= next - name;
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/* grow the buffer if needed */
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@ -3153,7 +3172,7 @@ static NTSTATUS lookup_unix_name( const WCHAR *name, int name_len, char **buffer
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}
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status = find_file_in_dir( unix_name, pos, name, end - name,
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check_case, redirect ? &is_win_dir : NULL );
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is_unix, redirect ? &is_win_dir : NULL );
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/* if this is the last element, not finding it is not necessarily fatal */
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if (!name_len)
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@ -3184,7 +3203,7 @@ static NTSTATUS lookup_unix_name( const WCHAR *name, int name_len, char **buffer
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pos += strlen( unix_name + pos );
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name = next;
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if (is_win_dir && (len = get_redirect_path( unix_name, pos, name, name_len, check_case )))
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if (is_win_dir && (len = get_redirect_path( unix_name, pos, name, name_len, is_unix )))
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{
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name += len;
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name_len -= len;
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@ -3203,10 +3222,9 @@ static NTSTATUS lookup_unix_name( const WCHAR *name, int name_len, char **buffer
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static NTSTATUS nt_to_unix_file_name_attr( const OBJECT_ATTRIBUTES *attr, char **name_ret,
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UNICODE_STRING *nt_name, UINT disposition )
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{
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static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
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enum server_fd_type type;
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int old_cwd, root_fd, needs_close;
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const WCHAR *name, *p;
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const WCHAR *name;
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char *unix_name;
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int name_len, unix_len;
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NTSTATUS status;
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@ -3217,11 +3235,7 @@ static NTSTATUS nt_to_unix_file_name_attr( const OBJECT_ATTRIBUTES *attr, char *
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name = attr->ObjectName->Buffer;
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name_len = attr->ObjectName->Length / sizeof(WCHAR);
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if (name_len && IS_SEPARATOR(name[0])) return STATUS_INVALID_PARAMETER;
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/* check for invalid characters */
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for (p = name; p < name + name_len; p++)
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if (*p < 32 || wcschr( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
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if (name_len && name[0] == '\\') return STATUS_INVALID_PARAMETER;
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unix_len = name_len * 3 + MAX_DIR_ENTRY_LEN + 3;
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if (!(unix_name = malloc( unix_len ))) return STATUS_NO_MEMORY;
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@ -3239,8 +3253,7 @@ static NTSTATUS nt_to_unix_file_name_attr( const OBJECT_ATTRIBUTES *attr, char *
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mutex_lock( &dir_mutex );
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if ((old_cwd = open( ".", O_RDONLY )) != -1 && fchdir( root_fd ) != -1)
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{
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status = lookup_unix_name( name, name_len, &unix_name, unix_len, 1,
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disposition, FALSE );
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status = lookup_unix_name( name, name_len, &unix_name, unix_len, 1, disposition, FALSE );
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if (fchdir( old_cwd ) == -1) chdir( "/" );
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}
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else status = errno_to_status( errno );
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@ -3282,18 +3295,17 @@ NTSTATUS nt_to_unix_file_name( const UNICODE_STRING *nameW, char **unix_name_ret
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static const WCHAR invalid_charsW[] = { INVALID_NT_CHARS, 0 };
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NTSTATUS status = STATUS_SUCCESS;
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const WCHAR *name, *p;
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const WCHAR *name;
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struct stat st;
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char *unix_name;
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int pos, ret, name_len, unix_len, prefix_len;
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WCHAR prefix[MAX_DIR_ENTRY_LEN + 1];
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BOOLEAN check_case = FALSE;
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BOOLEAN is_unix = FALSE;
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name = nameW->Buffer;
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name_len = nameW->Length / sizeof(WCHAR);
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if (!name_len || !IS_SEPARATOR(name[0])) return STATUS_OBJECT_PATH_SYNTAX_BAD;
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if (!name_len || name[0] != '\\') return STATUS_OBJECT_PATH_SYNTAX_BAD;
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if (!(pos = get_dos_prefix_len( nameW )))
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return STATUS_BAD_DEVICE_TYPE; /* no DOS prefix, assume NT native name */
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@ -3306,30 +3318,22 @@ NTSTATUS nt_to_unix_file_name( const UNICODE_STRING *nameW, char **unix_name_ret
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/* check for sub-directory */
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for (pos = 0; pos < name_len && pos <= MAX_DIR_ENTRY_LEN; pos++)
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{
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if (IS_SEPARATOR(name[pos])) break;
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if (name[pos] == '\\') break;
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if (name[pos] < 32 || wcschr( invalid_charsW, name[pos] ))
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return STATUS_OBJECT_NAME_INVALID;
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prefix[pos] = (name[pos] >= 'A' && name[pos] <= 'Z') ? name[pos] + 'a' - 'A' : name[pos];
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}
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if (pos > MAX_DIR_ENTRY_LEN) return STATUS_OBJECT_NAME_INVALID;
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if (pos >= 4 && !memcmp( prefix, unixW, sizeof(unixW) ))
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{
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/* allow slash for unix namespace */
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if (pos > 4 && prefix[4] == '/') pos = 4;
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is_unix = pos == 4;
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}
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prefix_len = pos;
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prefix[prefix_len] = 0;
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/* check for invalid characters (all chars except 0 are valid for unix) */
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is_unix = (prefix_len == 4 && !memcmp( prefix, unixW, sizeof(unixW) ));
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if (is_unix)
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{
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for (p = name + prefix_len; p < name + name_len; p++)
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if (!*p) return STATUS_OBJECT_NAME_INVALID;
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check_case = TRUE;
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}
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else
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{
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for (p = name + prefix_len; p < name + name_len; p++)
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if (*p < 32 || wcschr( invalid_charsW, *p )) return STATUS_OBJECT_NAME_INVALID;
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}
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unix_len = name_len * 3 + MAX_DIR_ENTRY_LEN + 3;
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unix_len += strlen(config_dir) + sizeof("/dosdevices/");
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if (!(unix_name = malloc( unix_len ))) return STATUS_NO_MEMORY;
|
||||
|
|
@ -3353,6 +3357,7 @@ NTSTATUS nt_to_unix_file_name( const UNICODE_STRING *nameW, char **unix_name_ret
|
|||
|
||||
/* check if prefix exists (except for DOS drives to avoid extra stat calls) */
|
||||
|
||||
if (wcschr( prefix, '/' )) return STATUS_OBJECT_PATH_NOT_FOUND;
|
||||
if (prefix_len != 2 || prefix[1] != ':')
|
||||
{
|
||||
unix_name[pos] = 0;
|
||||
|
|
@ -3367,10 +3372,10 @@ NTSTATUS nt_to_unix_file_name( const UNICODE_STRING *nameW, char **unix_name_ret
|
|||
}
|
||||
}
|
||||
|
||||
name += prefix_len;
|
||||
name_len -= prefix_len;
|
||||
name += prefix_len + 1;
|
||||
name_len -= prefix_len + 1;
|
||||
|
||||
status = lookup_unix_name( name, name_len, &unix_name, unix_len, pos, disposition, check_case );
|
||||
status = lookup_unix_name( name, name_len, &unix_name, unix_len, pos, disposition, is_unix );
|
||||
if (status == STATUS_SUCCESS || status == STATUS_NO_SUCH_FILE)
|
||||
{
|
||||
TRACE( "%s -> %s\n", debugstr_us(nameW), debugstr_a(unix_name) );
|
||||
|
|
|
|||
Loading…
Reference in a new issue