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authorBjörn-Egil Dahlberg <[email protected]>2011-11-16 19:43:58 +0100
committerBjörn-Egil Dahlberg <[email protected]>2011-12-02 15:41:13 +0100
commit3c5f8d903787b24a3d0d0f4404a652e25f089765 (patch)
tree03f8625a3ce87021362f2c1085d71b7c87f46c8f /erts/emulator/drivers/win32/win_efile.c
parentf21b72789018cf5ac581d851685162194b049d11 (diff)
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Teach win32 efile driver epochs
Conflicts: erts/emulator/drivers/win32/win_efile.c
Diffstat (limited to 'erts/emulator/drivers/win32/win_efile.c')
-rw-r--r--erts/emulator/drivers/win32/win_efile.c104
1 files changed, 41 insertions, 63 deletions
diff --git a/erts/emulator/drivers/win32/win_efile.c b/erts/emulator/drivers/win32/win_efile.c
index 0bc701c4cb..19b9384940 100644
--- a/erts/emulator/drivers/win32/win_efile.c
+++ b/erts/emulator/drivers/win32/win_efile.c
@@ -45,6 +45,23 @@
#define INVALID_FILE_ATTRIBUTES ((DWORD) 0xFFFFFFFF)
#endif
+// #define TICKS_PER_SECOND 10000000
+// #define EPOCH_DIFFERENCE 11644473600LL
+// time_t convertWindowsTimeToUnixTime(long long int input){
+// long long int temp;
+// temp = input / TICKS_PER_SECOND; //convert from 100ns intervals to seconds;
+// temp = temp - EPOCH_DIFFERENCE; //subtract number of seconds between epochs
+// return (time_t) temp;
+// }
+
+#define TICKS_PER_SECOND (10000000)
+#define EPOCH_DIFFERENCE (11644473600LL)
+#define FILETIME_TO_EPOCH(time) \
+ (((time) / TICKS_PER_SECOND) - EPOCH_DIFFERENCE)
+#define EPOCH_TO_FILETIME(epoch) \
+ (EPOCH_DIFFERENCE + ((epoch) * TICKS_PER_SECOND))
+
+
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);
@@ -905,34 +922,21 @@ 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);
+ pInfo->modifyTime = FILETIME_TO_EPOCH(findbuf.ftLastWriteTime);
if (findbuf.ftLastAccessTime.dwLowDateTime == 0 &&
findbuf.ftLastAccessTime.dwHighDateTime == 0) {
pInfo->accessTime = pInfo->modifyTime;
} else {
- GET_TIME(pInfo->accessTime, ftLastAccessTime);
+ pInfo->accessTime = FILETIME_TO_EPOCH(findbuf.ftLastAccessTime);
}
if (findbuf.ftCreationTime.dwLowDateTime == 0 &&
findbuf.ftCreationTime.dwHighDateTime == 0) {
pInfo->cTime = pInfo->modifyTime;
} else {
- GET_TIME(pInfo->cTime, ftCreationTime);
+ pInfo->cTime = FILETIME_TO_EPOCH(findbuf.ftCreationTime);
}
-#undef GET_TIME
FindClose(findhandle);
}
@@ -968,17 +972,12 @@ 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;
/*
@@ -1003,57 +1002,36 @@ 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
+ ModifyFileTime = EPOCH_TO_FILETIME(pInfo->modifyTime);
+ AccessFileTime = EPOCH_TO_FILETIME(pInfo->accessTime);
+ CreationFileTime = EPOCH_TO_FILETIME(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);
}
/*