1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at https://curl.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 * SPDX-License-Identifier: curl 22 * 23 ***************************************************************************/ 24 25#include "rename.h" 26 27#include "curl_setup.h" 28 29#if (!defined(CURL_DISABLE_HTTP) || !defined(CURL_DISABLE_COOKIES)) || \ 30 !defined(CURL_DISABLE_ALTSVC) 31 32#include "curl_multibyte.h" 33#include "timeval.h" 34 35/* The last 3 #include files should be in this order */ 36#include "curl_printf.h" 37#include "curl_memory.h" 38#include "memdebug.h" 39 40/* return 0 on success, 1 on error */ 41int Curl_rename(const char *oldpath, const char *newpath) 42{ 43#ifdef _WIN32 44 /* rename() on Windows doesn't overwrite, so we can't use it here. 45 MoveFileEx() will overwrite and is usually atomic, however it fails 46 when there are open handles to the file. */ 47 const int max_wait_ms = 1000; 48 struct curltime start = Curl_now(); 49 TCHAR *tchar_oldpath = curlx_convert_UTF8_to_tchar((char *)oldpath); 50 TCHAR *tchar_newpath = curlx_convert_UTF8_to_tchar((char *)newpath); 51 for(;;) { 52 timediff_t diff; 53 if(MoveFileEx(tchar_oldpath, tchar_newpath, MOVEFILE_REPLACE_EXISTING)) { 54 curlx_unicodefree(tchar_oldpath); 55 curlx_unicodefree(tchar_newpath); 56 break; 57 } 58 diff = Curl_timediff(Curl_now(), start); 59 if(diff < 0 || diff > max_wait_ms) { 60 curlx_unicodefree(tchar_oldpath); 61 curlx_unicodefree(tchar_newpath); 62 return 1; 63 } 64 Sleep(1); 65 } 66#else 67 if(rename(oldpath, newpath)) 68 return 1; 69#endif 70 return 0; 71} 72 73#endif 74