diff options
Diffstat (limited to 'lib/rename.c')
-rw-r--r-- | lib/rename.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/lib/rename.c b/lib/rename.c new file mode 100644 index 000000000..bb170d3cc --- /dev/null +++ b/lib/rename.c @@ -0,0 +1,62 @@ +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 2020, Daniel Stenberg, <daniel@haxx.se>, et al. + * + * This software is licensed as described in the file COPYING, which + * you should have received as part of this distribution. The terms + * are also available at https://curl.haxx.se/docs/copyright.html. + * + * You may opt to use, copy, modify, merge, publish, distribute and/or sell + * copies of the Software, and permit persons to whom the Software is + * furnished to do so, under the terms of the COPYING file. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ***************************************************************************/ + +#include "rename.h" + +#include "curl_setup.h" + +#if (!defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)) || \ + defined(USE_ALTSVC) + +#include "timeval.h" + +/* The last 3 #include files should be in this order */ +#include "curl_printf.h" +#include "curl_memory.h" +#include "memdebug.h" + +/* return 0 on success, 1 on error */ +int Curl_rename(const char *oldpath, const char *newpath) +{ +#ifdef WIN32 + /* rename() on Windows doesn't overwrite, so we can't use it here. + MoveFileExA() will overwrite and is usually atomic, however it fails + when there are open handles to the file. */ + const int max_wait_ms = 1000; + struct curltime start = Curl_now(); + for(;;) { + timediff_t diff; + if(MoveFileExA(oldpath, newpath, MOVEFILE_REPLACE_EXISTING)) + break; + diff = Curl_timediff(Curl_now(), start); + if(diff < 0 || diff > max_wait_ms) + return 1; + Sleep(1); + } +#else + if(rename(oldpath, newpath)) + return 1; +#endif + return 0; +} + +#endif |