diff options
Diffstat (limited to 'compat')
| -rw-r--r-- | compat/mingw.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/compat/mingw.c b/compat/mingw.c index 2839d9df6e..1a17cf6cce 100644 --- a/compat/mingw.c +++ b/compat/mingw.c @@ -934,7 +934,9 @@ int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz) #undef rename int mingw_rename(const char *pold, const char *pnew) { - DWORD attrs; + DWORD attrs, gle; + int tries = 0; + static const int delay[] = { 0, 1, 10, 20, 40 }; /* * Try native rename() first to get errno right. @@ -944,10 +946,12 @@ int mingw_rename(const char *pold, const char *pnew) return 0; if (errno != EEXIST) return -1; +repeat: if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) return 0; /* TODO: translate more errors */ - if (GetLastError() == ERROR_ACCESS_DENIED && + gle = GetLastError(); + if (gle == ERROR_ACCESS_DENIED && (attrs = GetFileAttributes(pnew)) != INVALID_FILE_ATTRIBUTES) { if (attrs & FILE_ATTRIBUTE_DIRECTORY) { errno = EISDIR; @@ -957,10 +961,23 @@ int mingw_rename(const char *pold, const char *pnew) SetFileAttributes(pnew, attrs & ~FILE_ATTRIBUTE_READONLY)) { if (MoveFileEx(pold, pnew, MOVEFILE_REPLACE_EXISTING)) return 0; + gle = GetLastError(); /* revert file attributes on failure */ SetFileAttributes(pnew, attrs); } } + if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) { + /* + * We assume that some other process had the source or + * destination file open at the wrong moment and retry. + * In order to give the other process a higher chance to + * complete its operation, we give up our time slice now. + * If we have to retry again, we do sleep a bit. + */ + Sleep(delay[tries]); + tries++; + goto repeat; + } errno = EACCES; return -1; } |