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From: "Thomas Weißschuh" <linux@weissschuh.net>
To: Willy Tarreau <w@1wt.eu>, Shuah Khan <shuah@kernel.org>
Cc: "Arnd Bergmann" <arnd@arndb.de>,
	linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
	"Thomas Weißschuh" <linux@weissschuh.net>
Subject: [PATCH 02/12] tools/nolibc: handle 64-bit off_t for llseek
Date: Wed, 29 Oct 2025 17:02:52 +0100	[thread overview]
Message-ID: <20251029-nolibc-uapi-types-v1-2-e79de3b215d8@weissschuh.net> (raw)
In-Reply-To: <20251029-nolibc-uapi-types-v1-0-e79de3b215d8@weissschuh.net>

Correctly handle 64-bit off_t values in preparation for 64-bit off_t on
32-bit architectures.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
 tools/include/nolibc/sys.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h
index 386ed80aead0..321a3bd16ff4 100644
--- a/tools/include/nolibc/sys.h
+++ b/tools/include/nolibc/sys.h
@@ -599,8 +599,7 @@ off_t sys_lseek(int fd, off_t offset, int whence)
 	off_t result;
 	int ret;
 
-	/* Only exists on 32bit where nolibc off_t is also 32bit */
-	ret = my_syscall5(__NR_llseek, fd, 0, offset, &loff, whence);
+	ret = my_syscall5(__NR_llseek, fd, offset >> 32, (uint32_t)offset, &loff, whence);
 	if (ret < 0)
 		result = ret;
 	else if (loff != (off_t)loff)

-- 
2.51.1.dirty


  parent reply	other threads:[~2025-10-29 16:04 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-29 16:02 [PATCH 00/12] tools/nolibc: always use 64-bit ino_t, off_t and time-related types Thomas Weißschuh
2025-10-29 16:02 ` [PATCH 01/12] tools/nolibc: use 64-bit ino_t Thomas Weißschuh
2025-10-29 16:02 ` Thomas Weißschuh [this message]
2025-10-30 14:56   ` [PATCH 02/12] tools/nolibc: handle 64-bit off_t for llseek Arnd Bergmann
2025-10-29 16:02 ` [PATCH 03/12] tools/nolibc: prefer the llseek syscall Thomas Weißschuh
2025-10-29 16:02 ` [PATCH 04/12] tools/nolibc: use 64-bit off_t Thomas Weißschuh
2025-10-29 16:02 ` [PATCH 05/12] tools/nolibc: remove now superfluous overflow check in llseek Thomas Weißschuh
2025-10-30 14:58   ` Arnd Bergmann
2025-10-29 16:02 ` [PATCH 06/12] tools/nolibc: remove more __nolibc_enosys() fallbacks Thomas Weißschuh
2025-10-29 16:02 ` [PATCH 07/12] tools/nolibc: prefer explicit 64-bit time-related system calls Thomas Weißschuh
2025-10-30 14:44   ` Arnd Bergmann
2025-10-29 16:02 ` [PATCH 08/12] tools/nolibc: gettimeofday(): avoid libgcc 64-bit divisions Thomas Weißschuh
2025-10-30 14:57   ` Arnd Bergmann
2025-11-02  8:31   ` Willy Tarreau
2025-11-02  9:27     ` Thomas Weißschuh
2025-11-02  9:49       ` Willy Tarreau
2025-10-29 16:02 ` [PATCH 09/12] tools/nolibc: use a custom struct timespec Thomas Weißschuh
2025-10-30 14:46   ` Arnd Bergmann
2025-11-02  8:36     ` Willy Tarreau
2025-11-02  8:40       ` Willy Tarreau
2025-11-02  9:41       ` Thomas Weißschuh
2025-11-02  9:50         ` Willy Tarreau
2025-10-29 16:03 ` [PATCH 10/12] tools/nolibc: always use 64-bit time types Thomas Weißschuh
2025-10-29 16:03 ` [PATCH 11/12] selftests/nolibc: test compatibility of timespec and __kernel_timespec Thomas Weißschuh
2025-10-29 16:03 ` [PATCH 12/12] tools/nolibc: remove time conversions Thomas Weißschuh
2025-10-30 14:58   ` Arnd Bergmann
2025-11-02  8:44 ` [PATCH 00/12] tools/nolibc: always use 64-bit ino_t, off_t and time-related types Willy Tarreau

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