Fake 64-bit time on 32-bit systems

src/libfaketime.c

@@ -164,6 +164,20 @@ struct utimbuf {
 #include <sys/random.h>
 #endif
 
+/* __timespec64 is needed for clock_gettime64 on 32-bit architectures */
+struct __timespec64
+{
+  uint64_t tv_sec;         /* Seconds */
+  uint32_t tv_nsec;        /* this is 32-bit, apparently! */
+};
+
+/* __timespec64 is needed for clock_gettime64 on 32-bit architectures */
+struct __timeval64
+{
+  uint64_t tv_sec;         /* Seconds */
+  uint64_t tv_usec;        /* this is 64-bit, apparently! */
+};
+
 /*
  * Per thread variable, which we turn on inside real_* calls to avoid modifying
  * time multiple times of for the whole process to prevent faking time
@@ -201,6 +215,7 @@ static time_t       (*real_time)            (time_t *);
 static int          (*real_ftime)           (struct timeb *);
 static int          (*real_gettimeofday)    (struct timeval *, void *);
 static int          (*real_clock_gettime)   (clockid_t clk_id, struct timespec *tp);
+static int          (*real_clock_gettime64) (clockid_t clk_id, struct __timespec64 *tp);
 #ifdef TIME_UTC
 static int          (*real_timespec_get)    (struct timespec *ts, int base);
 #endif
@@ -2417,6 +2432,50 @@ int clock_gettime(clockid_t clk_id, struct timespec *tp)
   return result;
 }
 
+/* this is used by 32-bit architectures only */
+int __clock_gettime64(clockid_t clk_id, struct __timespec64 *tp64)
+{
+  struct timespec tp;
+  int result;
+
+  result = clock_gettime(clk_id, &tp);
+  tp64->tv_sec = tp.tv_sec;
+  tp64->tv_nsec = tp.tv_nsec;
+  return result;
+}
+
+/* this is used by 32-bit architectures only */
+int __gettimeofday64(struct __timeval64 *tv64, void *tz)
+{
+  struct timeval tv;
+  int result;
+
+  result = gettimeofday(&tv, tz);
+  tv64->tv_sec = tv.tv_sec;
+  tv64->tv_usec = tv.tv_usec;
+  return result;
+}
+
+/* this is used by 32-bit architectures only */
+uint64_t __time64(uint64_t *write_out)
+{
+  struct timespec tp;
+  uint64_t output;
+  int error;
+
+  error = clock_gettime(CLOCK_REALTIME, &tp);
+  if (error == -1)
+  {
+    return (uint64_t)error;
+  }
+  output = tp.tv_sec;
+
+  if (write_out)
+  {
+    *write_out = output;
+  }
+  return output;
+}
 
 #ifdef TIME_UTC
 #ifdef MACOS_DYLD_INTERPOSE
@@ -2760,6 +2819,11 @@ static void ftpl_really_init(void)
   {
     real_clock_gettime  =   dlsym(RTLD_NEXT, "clock_gettime");
   }
+  real_clock_gettime64 =    dlsym(RTLD_NEXT, "clock_gettime64");
+  if (NULL == real_clock_gettime64)
+  {
+    real_clock_gettime64 =  dlsym(RTLD_NEXT, "__clock_gettime64");
+  }
 #ifdef FAKE_TIMERS
 #if defined(__sun)
     real_timer_gettime_233 =  dlsym(RTLD_NEXT, "timer_gettime");

test/Makefile

@@ -1,6 +1,6 @@
 CC = gcc
 
-CFLAGS += -std=gnu99 -Wall -DFAKE_STAT -Werror -Wextra $(FAKETIME_COMPILE_CFLAGS)
+CFLAGS += -std=gnu99 -Wall -DFAKE_STAT -Werror -Wextra $(FAKETIME_COMPILE_CFLAGS) -U_FILE_OFFSET_BITS -U_TIME_BITS
 LDFLAGS += -lrt -lpthread
 
 SRC = timetest.c