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comparison src/fileio.c @ 23017:d80faed40bec v8.2.2055

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patch 8.2.2055: MS-Windows: two Vim instances may use the same temp file Commit: https://github.com/vim/vim/commit/2472a74be4dedfeaff22314f31cf9787618163d1 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Nov 26 19:47:28 2020 +0100 patch 8.2.2055: MS-Windows: two Vim instances may use the same temp file Problem: MS-Windows: two Vim instances may use the same temp file. Solution: Use the process ID for the temp name. (Ken Takata, closes https://github.com/vim/vim/issues/7378)
author Bram Moolenaar <Bram@vim.org>
date Thu, 26 Nov 2020 20:00:06 +0100
parents f7f2d73ff85e
children 826a6406ea7b
comparison
equal deleted inserted replaced
23016:7f40dcbf9222 23017:d80faed40bec
5165 #else // TEMPDIRNAMES 5165 #else // TEMPDIRNAMES
5166 5166
5167 # ifdef MSWIN 5167 # ifdef MSWIN
5168 WCHAR wszTempFile[_MAX_PATH + 1]; 5168 WCHAR wszTempFile[_MAX_PATH + 1];
5169 WCHAR buf4[4]; 5169 WCHAR buf4[4];
5170 WCHAR *chartab = L"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
5170 char_u *retval; 5171 char_u *retval;
5171 char_u *p; 5172 char_u *p;
5173 long i;
5172 5174
5173 wcscpy(itmp, L""); 5175 wcscpy(itmp, L"");
5174 if (GetTempPathW(_MAX_PATH, wszTempFile) == 0) 5176 if (GetTempPathW(_MAX_PATH, wszTempFile) == 0)
5175 { 5177 {
5176 wszTempFile[0] = L'.'; // GetTempPathW() failed, use current dir 5178 wszTempFile[0] = L'.'; // GetTempPathW() failed, use current dir
5177 wszTempFile[1] = NUL; 5179 wszTempFile[1] = L'\\';
5180 wszTempFile[2] = NUL;
5178 } 5181 }
5179 wcscpy(buf4, L"VIM"); 5182 wcscpy(buf4, L"VIM");
5180 buf4[2] = extra_char; // make it "VIa", "VIb", etc. 5183
5184 // randomize the name to avoid collisions
5185 i = mch_get_pid() + extra_char;
5186 buf4[1] = chartab[i % 36];
5187 buf4[2] = chartab[101 * i % 36];
5181 if (GetTempFileNameW(wszTempFile, buf4, 0, itmp) == 0) 5188 if (GetTempFileNameW(wszTempFile, buf4, 0, itmp) == 0)
5182 return NULL; 5189 return NULL;
5183 if (!keep) 5190 if (!keep)
5184 // GetTempFileName() will create the file, we don't want that 5191 // GetTempFileName() will create the file, we don't want that
5185 (void)DeleteFileW(itmp); 5192 (void)DeleteFileW(itmp);