Annotation of embedaddon/curl/lib/rename.c, revision 1.1
1.1 ! misho 1: /***************************************************************************
! 2: * _ _ ____ _
! 3: * Project ___| | | | _ \| |
! 4: * / __| | | | |_) | |
! 5: * | (__| |_| | _ <| |___
! 6: * \___|\___/|_| \_\_____|
! 7: *
! 8: * Copyright (C) 2020, 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.haxx.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: ***************************************************************************/
! 22:
! 23: #include "rename.h"
! 24:
! 25: #include "curl_setup.h"
! 26:
! 27: #if (!defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)) || \
! 28: defined(USE_ALTSVC)
! 29:
! 30: #include "timeval.h"
! 31:
! 32: /* The last 3 #include files should be in this order */
! 33: #include "curl_printf.h"
! 34: #include "curl_memory.h"
! 35: #include "memdebug.h"
! 36:
! 37: /* return 0 on success, 1 on error */
! 38: int Curl_rename(const char *oldpath, const char *newpath)
! 39: {
! 40: #ifdef WIN32
! 41: /* rename() on Windows doesn't overwrite, so we can't use it here.
! 42: MoveFileExA() will overwrite and is usually atomic, however it fails
! 43: when there are open handles to the file. */
! 44: const int max_wait_ms = 1000;
! 45: struct curltime start = Curl_now();
! 46: for(;;) {
! 47: timediff_t diff;
! 48: if(MoveFileExA(oldpath, newpath, MOVEFILE_REPLACE_EXISTING))
! 49: break;
! 50: diff = Curl_timediff(Curl_now(), start);
! 51: if(diff < 0 || diff > max_wait_ms)
! 52: return 1;
! 53: Sleep(1);
! 54: }
! 55: #else
! 56: if(rename(oldpath, newpath))
! 57: return 1;
! 58: #endif
! 59: return 0;
! 60: }
! 61:
! 62: #endif
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