diff options
Diffstat (limited to 'erts/emulator/drivers/win32/win_efile.c')
-rw-r--r--[-rwxr-xr-x] | erts/emulator/drivers/win32/win_efile.c | 119 |
1 files changed, 48 insertions, 71 deletions
diff --git a/erts/emulator/drivers/win32/win_efile.c b/erts/emulator/drivers/win32/win_efile.c index 931bb196f1..0d3d334154 100755..100644 --- a/erts/emulator/drivers/win32/win_efile.c +++ b/erts/emulator/drivers/win32/win_efile.c @@ -21,6 +21,9 @@ */ #include <windows.h> +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif #include "sys.h" #include <ctype.h> #include <wchar.h> @@ -42,6 +45,26 @@ #define INVALID_FILE_ATTRIBUTES ((DWORD) 0xFFFFFFFF) #endif +#define TICKS_PER_SECOND (10000000ULL) +#define EPOCH_DIFFERENCE (11644473600LL) + +#define FILETIME_TO_EPOCH(epoch, ft) \ + do { \ + ULARGE_INTEGER ull; \ + ull.LowPart = (ft).dwLowDateTime; \ + ull.HighPart = (ft).dwHighDateTime; \ + (epoch) = ((ull.QuadPart / TICKS_PER_SECOND) - EPOCH_DIFFERENCE); \ + } while(0) + +#define EPOCH_TO_FILETIME(ft, epoch) \ + do { \ + ULARGE_INTEGER ull; \ + ull.QuadPart = (((epoch) + EPOCH_DIFFERENCE) * TICKS_PER_SECOND); \ + (ft).dwLowDateTime = ull.LowPart; \ + (ft).dwHighDateTime = ull.HighPart; \ + } while(0) + + static int check_error(int result, Efile_error* errInfo); static int set_error(Efile_error* errInfo); static int is_root_unc_name(const WCHAR *path); @@ -861,14 +884,7 @@ efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo, findbuf.cFileName[0] = L'\0'; pInfo->links = 1; - pInfo->modifyTime.year = 1980; - pInfo->modifyTime.month = 1; - pInfo->modifyTime.day = 1; - pInfo->modifyTime.hour = 0; - pInfo->modifyTime.minute = 0; - pInfo->modifyTime.second = 0; - - pInfo->accessTime = pInfo->modifyTime; + pInfo->cTime = pInfo->accessTime = pInfo->modifyTime = 0; } else { SYSTEMTIME SystemTime; FILETIME LocalFTime; @@ -902,34 +918,21 @@ efile_fileinfo(Efile_error* errInfo, Efile_info* pInfo, } } -#define GET_TIME(dst, src) \ -if (!FileTimeToLocalFileTime(&findbuf.src, &LocalFTime) || \ - !FileTimeToSystemTime(&LocalFTime, &SystemTime)) { \ - return set_error(errInfo); \ -} \ -(dst).year = SystemTime.wYear; \ -(dst).month = SystemTime.wMonth; \ -(dst).day = SystemTime.wDay; \ -(dst).hour = SystemTime.wHour; \ -(dst).minute = SystemTime.wMinute; \ -(dst).second = SystemTime.wSecond; - - GET_TIME(pInfo->modifyTime, ftLastWriteTime); + FILETIME_TO_EPOCH(pInfo->modifyTime, findbuf.ftLastWriteTime); if (findbuf.ftLastAccessTime.dwLowDateTime == 0 && findbuf.ftLastAccessTime.dwHighDateTime == 0) { pInfo->accessTime = pInfo->modifyTime; } else { - GET_TIME(pInfo->accessTime, ftLastAccessTime); + FILETIME_TO_EPOCH(pInfo->accessTime, findbuf.ftLastAccessTime); } if (findbuf.ftCreationTime.dwLowDateTime == 0 && findbuf.ftCreationTime.dwHighDateTime == 0) { pInfo->cTime = pInfo->modifyTime; } else { - GET_TIME(pInfo->cTime, ftCreationTime); + FILETIME_TO_EPOCH(pInfo->cTime ,findbuf.ftCreationTime); } -#undef GET_TIME FindClose(findhandle); } @@ -965,17 +968,12 @@ efile_write_info(Efile_error* errInfo, char* name) { SYSTEMTIME timebuf; - FILETIME LocalFileTime; FILETIME ModifyFileTime; FILETIME AccessFileTime; FILETIME CreationFileTime; HANDLE fd; - FILETIME* mtime = NULL; - FILETIME* atime = NULL; - FILETIME* ctime = NULL; DWORD attr; DWORD tempAttr; - BOOL modifyTime = FALSE; WCHAR *wname = (WCHAR *) name; /* @@ -1000,57 +998,36 @@ efile_write_info(Efile_error* errInfo, * Construct all file times. */ -#define MKTIME(tb, ts, ptr) \ - timebuf.wYear = ts.year; \ - timebuf.wMonth = ts.month; \ - timebuf.wDay = ts.day; \ - timebuf.wHour = ts.hour; \ - timebuf.wMinute = ts.minute; \ - timebuf.wSecond = ts.second; \ - timebuf.wMilliseconds = 0; \ - if (ts.year != -1) { \ - modifyTime = TRUE; \ - ptr = &tb; \ - if (!SystemTimeToFileTime(&timebuf, &LocalFileTime ) || \ - !LocalFileTimeToFileTime(&LocalFileTime, &tb)) { \ - errno = EINVAL; \ - return check_error(-1, errInfo); \ - } \ - } - - MKTIME(ModifyFileTime, pInfo->modifyTime, mtime); - MKTIME(AccessFileTime, pInfo->accessTime, atime); - MKTIME(CreationFileTime, pInfo->cTime, ctime); -#undef MKTIME + EPOCH_TO_FILETIME(ModifyFileTime, pInfo->modifyTime); + EPOCH_TO_FILETIME(AccessFileTime, pInfo->accessTime); + EPOCH_TO_FILETIME(CreationFileTime, pInfo->cTime); /* * If necessary, set the file times. */ - if (modifyTime) { - /* - * If the has read only access, we must temporarily turn on - * write access (this is necessary for native filesystems, - * but not for NFS filesystems). - */ + /* + * If the has read only access, we must temporarily turn on + * write access (this is necessary for native filesystems, + * but not for NFS filesystems). + */ - if (tempAttr & FILE_ATTRIBUTE_READONLY) { - tempAttr &= ~FILE_ATTRIBUTE_READONLY; - if (!SetFileAttributesW(wname, tempAttr)) { - return set_error(errInfo); - } + if (tempAttr & FILE_ATTRIBUTE_READONLY) { + tempAttr &= ~FILE_ATTRIBUTE_READONLY; + if (!SetFileAttributesW(wname, tempAttr)) { + return set_error(errInfo); } + } - fd = CreateFileW(wname, GENERIC_READ|GENERIC_WRITE, - FILE_SHARE_READ | FILE_SHARE_WRITE, - NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); - if (fd != INVALID_HANDLE_VALUE) { - BOOL result = SetFileTime(fd, ctime, atime, mtime); - if (!result) { - return set_error(errInfo); - } - CloseHandle(fd); + fd = CreateFileW(wname, GENERIC_READ|GENERIC_WRITE, + FILE_SHARE_READ | FILE_SHARE_WRITE, + NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); + if (fd != INVALID_HANDLE_VALUE) { + BOOL result = SetFileTime(fd, &CreationFileTime, &AccessFileTime, &ModifyFileTime); + if (!result) { + return set_error(errInfo); } + CloseHandle(fd); } /* |