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authorLukasz Majewski <lukma@denx.de>2020-01-16 23:40:51 +0100
committerLukasz Majewski <lukma@denx.de>2020-02-07 17:55:08 +0100
commit504c98717062cb9bcbd4b3e59e932d04331ddca5 (patch)
tree160f4da74fa1d00f12c80ec3134ea6fa2075e28f /include/time.h
parent3fced064f23562ec24f8312ffbc14950993969e6 (diff)
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y2038: Introduce struct __timeval64 - new internal glibc type
This type is a glibc's "internal" type similar to struct timeval but
whose tv_sec field is a __time64_t rather than a time_t, which makes it
Y2038-proof. This struct is NOT supposed to be passed to the kernel -
instead it shall be converted to struct __timespec64 and clock_[sg]ettime
syscalls shall be used (which are now Y2038 safe).

Build tests:
./src/scripts/build-many-glibcs.py glibcs

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'include/time.h')
-rw-r--r--include/time.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/time.h b/include/time.h
index 97d17c171a..e3afd6ed03 100644
--- a/include/time.h
+++ b/include/time.h
@@ -94,6 +94,20 @@ struct __itimerspec64
 #endif
 
 #if __TIMESIZE == 64
+# define __timeval64 timeval
+#else
+/* The glibc Y2038-proof struct __timeval64 structure for a time value.
+   This structure is NOT supposed to be passed to the Linux kernel.
+   Instead, it shall be converted to struct __timespec64 and time shall
+   be [sg]et via clock_[sg]ettime (which are now Y2038 safe).  */
+struct __timeval64
+{
+  __time64_t tv_sec;         /* Seconds */
+  __suseconds64_t tv_usec;       /* Microseconds */
+};
+#endif
+
+#if __TIMESIZE == 64
 # define __ctime64 ctime
 #else
 extern char *__ctime64 (const __time64_t *__timer) __THROW;