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* [glibc/fw/bug25486] y2038: Introduce struct __timeval64 - new internal glibc type
@ 2020-02-07 20:34 Florian Weimer
0 siblings, 0 replies; only message in thread
From: Florian Weimer @ 2020-02-07 20:34 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=504c98717062cb9bcbd4b3e59e932d04331ddca5
commit 504c98717062cb9bcbd4b3e59e932d04331ddca5
Author: Lukasz Majewski <lukma@denx.de>
Date: Thu Jan 16 23:40:51 2020 +0100
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>
Diff:
---
include/time.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/include/time.h b/include/time.h
index 97d17c1..e3afd6e 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;
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