| 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 2020, Daniel Stenberg, <[email protected]>, et al.
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| 9 | *
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| 10 | * This software is licensed as described in the file COPYING, which
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| 11 | * you should have received as part of this distribution. The terms
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| 12 | * are also available at https://curl.se/docs/copyright.html.
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| 13 | *
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| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 15 | * copies of the Software, and permit persons to whom the Software is
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| 16 | * furnished to do so, under the terms of the COPYING file.
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| 17 | *
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| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 19 | * KIND, either express or implied.
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| 20 | *
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| 21 | ***************************************************************************/
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| 22 |
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| 23 | #include "rename.h"
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| 24 |
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| 25 | #include "curl_setup.h"
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| 26 |
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| 27 | #if (!defined(CURL_DISABLE_HTTP) || !defined(CURL_DISABLE_COOKIES)) || \
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| 28 | !defined(CURL_DISABLE_ALTSVC)
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| 29 |
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| 30 | #include "curl_multibyte.h"
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| 31 | #include "timeval.h"
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| 32 |
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| 33 | /* The last 3 #include files should be in this order */
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| 34 | #include "curl_printf.h"
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| 35 | #include "curl_memory.h"
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| 36 | #include "memdebug.h"
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| 37 |
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| 38 | /* return 0 on success, 1 on error */
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| 39 | int Curl_rename(const char *oldpath, const char *newpath)
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| 40 | {
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| 41 | #ifdef WIN32
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| 42 | /* rename() on Windows doesn't overwrite, so we can't use it here.
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| 43 | MoveFileEx() will overwrite and is usually atomic, however it fails
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| 44 | when there are open handles to the file. */
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| 45 | const int max_wait_ms = 1000;
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| 46 | struct curltime start = Curl_now();
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| 47 | TCHAR *tchar_oldpath = curlx_convert_UTF8_to_tchar((char *)oldpath);
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| 48 | TCHAR *tchar_newpath = curlx_convert_UTF8_to_tchar((char *)newpath);
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| 49 | for(;;) {
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| 50 | timediff_t diff;
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| 51 | if(MoveFileEx(tchar_oldpath, tchar_newpath, MOVEFILE_REPLACE_EXISTING)) {
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| 52 | curlx_unicodefree(tchar_oldpath);
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| 53 | curlx_unicodefree(tchar_newpath);
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| 54 | break;
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| 55 | }
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| 56 | diff = Curl_timediff(Curl_now(), start);
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| 57 | if(diff < 0 || diff > max_wait_ms) {
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| 58 | curlx_unicodefree(tchar_oldpath);
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| 59 | curlx_unicodefree(tchar_newpath);
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| 60 | return 1;
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| 61 | }
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| 62 | Sleep(1);
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| 63 | }
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| 64 | #else
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| 65 | if(rename(oldpath, newpath))
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| 66 | return 1;
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| 67 | #endif
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| 68 | return 0;
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| 69 | }
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| 70 |
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| 71 | #endif
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