Update timestamp code; use utimensat()

[wimlib] / src / timestamp.h

diff --git a/src/timestamp.h b/src/timestamp.h
index 5ad0b3556343a937e5bb76587af97a6c5913f779..4dcc429b9f58d23bee876a90b27061473f9747c5 100644 (file)
--- a/src/timestamp.h
+++ b/src/timestamp.h
@@ -2,9 +2,13 @@
 #define _WIMLIB_TIMESTAMP_H
 
 #include "util.h"
+#include <sys/types.h>
+#include <sys/time.h>
 #include <time.h>
 
 #define intervals_per_second (1000000000ULL / 100ULL)
+#define intervals_per_microsecond (10)
+#define nanoseconds_per_interval (100)
 #define days_per_year (365ULL)
 #define seconds_per_day (3600ULL * 24ULL)
 #define intervals_per_day (seconds_per_day * intervals_per_second)
@@ -14,24 +18,60 @@
 #define intervals_1601_to_1970 (years_1601_to_1970 * intervals_per_year \
                                + leap_years_1601_to_1970 * intervals_per_day)
 
-static inline u64 unix_timestamp_to_ms(time_t t)
+static inline u64
+unix_timestamp_to_wim(time_t t)
 {
        return (u64)intervals_1601_to_1970 + t * intervals_per_second;
 }
-/* 
- * Returns the number of 100-nanosecond intervals that have elapsed since
- * 12:00 A.M., January 1, 1601 UTC.
- */
-static inline u64 get_timestamp()
-{
-       return unix_timestamp_to_ms(time(NULL));
-}
 
 /* Converts a timestamp as used in the WIM file to a UNIX timestamp as used in
  * the time() function. */
-static inline time_t ms_timestamp_to_unix(u64 timestamp)
+static inline time_t
+wim_timestamp_to_unix(u64 timestamp)
 {
        return (timestamp - intervals_1601_to_1970) / intervals_per_second;
 }
 
+static inline u64
+timeval_to_wim_timestamp(const struct timeval tv)
+{
+       return intervals_1601_to_1970
+              + (u64)tv.tv_sec * intervals_per_second
+              + (u64)tv.tv_usec * intervals_per_microsecond;
+}
+
+static inline struct timeval
+wim_timestamp_to_timeval(u64 timestamp)
+{
+       struct timeval tv;
+       tv.tv_sec = (timestamp - intervals_1601_to_1970) / intervals_per_second;
+       tv.tv_usec = ((timestamp - intervals_1601_to_1970) /
+                       intervals_per_microsecond) % 1000000;
+       return tv;
+}
+
+static inline u64
+timespec_to_wim_timestamp(const struct timespec ts)
+{
+       return intervals_1601_to_1970
+              + (u64)ts.tv_sec * intervals_per_second
+              + (u64)ts.tv_nsec / nanoseconds_per_interval;
+}
+
+static inline struct timespec
+wim_timestamp_to_timespec(u64 timestamp)
+{
+       struct timespec ts;
+       ts.tv_sec = (timestamp - intervals_1601_to_1970) / intervals_per_second;
+       ts.tv_nsec = ((timestamp - intervals_1601_to_1970) % intervals_per_second) * 
+                       nanoseconds_per_interval;
+       return ts;
+}
+
+extern u64
+get_wim_timestamp();
+
+extern void
+wim_timestamp_to_str(u64 timestamp, char *buf, size_t len);
+
 #endif