linux-kernel - [PATCH v2 09/13] tools/nolibc: always use 64-bit time types

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Message-Id: <20251122-nolibc-uapi-types-v2-9-b814a43654f5@weissschuh.net>
Date: Sat, 22 Nov 2025 17:59:15 +0100
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Willy Tarreau <w@....eu>, Shuah Khan <shuah@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org, 
 linux-kselftest@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH v2 09/13] tools/nolibc: always use 64-bit time types

32-bit time types will stop working in 2038.

Switch to 64-bit time types everywhere.

Suggested-by: Arnd Bergmann <arnd@...db.de>
Link: https://lore.kernel.org/lkml/cec27d94-c99d-4c57-9a12-275ea663dda8@app.fastmail.com/
Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 tools/include/nolibc/std.h   | 2 +-
 tools/include/nolibc/types.h | 9 +++++----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/tools/include/nolibc/std.h b/tools/include/nolibc/std.h
index 392f4dd94158..b9a116123902 100644
--- a/tools/include/nolibc/std.h
+++ b/tools/include/nolibc/std.h
@@ -29,6 +29,6 @@ typedef unsigned long       nlink_t;
 typedef  int64_t              off_t;
 typedef   signed long     blksize_t;
 typedef   signed long      blkcnt_t;
-typedef __kernel_time_t      time_t;
+typedef __kernel_time64_t    time_t;
 
 #endif /* _NOLIBC_STD_H */
diff --git a/tools/include/nolibc/types.h b/tools/include/nolibc/types.h
index 5d180ffabcb6..8f3cb18df7f1 100644
--- a/tools/include/nolibc/types.h
+++ b/tools/include/nolibc/types.h
@@ -17,14 +17,15 @@
 #include <linux/wait.h>
 
 struct timespec {
-	__kernel_old_time_t	tv_sec;
-	long			tv_nsec;
+	time_t	tv_sec;
+	int64_t	tv_nsec;
 };
 #define _STRUCT_TIMESPEC
 
+/* Never use with system calls */
 struct timeval {
-	__kernel_old_time_t	tv_sec;
-	__kernel_suseconds_t	tv_usec;
+	time_t	tv_sec;
+	int64_t	tv_usec;
 };
 
 #define timeval __nolibc_kernel_timeval

-- 
2.52.0