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From xen0n@gentoo.org Thu Oct 06 10:07:10 2022
Return-Path: <xen0n@gentoo.org>
X-Original-To: dilfridge@gentoo.org
Delivered-To: dilfridge@gentoo.org
From: WANG Xuerui <xen0n@gentoo.org>
To: qemu-devel@nongnu.org
Cc: Richard Henderson <richard.henderson@linaro.org>,
=?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <f4bug@amsat.org>,
WANG Xuerui <xen0n@gentoo.org>,
Song Gao <gaosong@loongson.cn>,
Xiaojuan Yang <yangxiaojuan@loongson.cn>,
=?UTF-8?q?Andreas=20K=20=2E=20H=C3=BCttel?= <dilfridge@gentoo.org>
Subject: [PATCH RESEND] linux-user: Fix struct statfs ABI on loongarch64
Date: Thu, 6 Oct 2022 18:07:10 +0800
Message-Id: <20221006100710.427252-1-xen0n@gentoo.org>
X-Mailer: git-send-email 2.38.0
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Previously the 32-bit version was incorrectly chosen, leading to funny
but incorrect output from e.g. df(1). Simply select the version
corresponding to the 64-bit asm-generic definition.
For reference, this program should produce the same output no matter
natively compiled or not, for loongarch64 or not:
```c
#include <stdio.h>
#include <sys/statfs.h>
int main(int argc, const char *argv[])
{
struct statfs b;
if (statfs(argv[0], &b))
return 1;
printf("f_type = 0x%lx\n", b.f_type);
printf("f_bsize = %ld\n", b.f_bsize);
printf("f_blocks = %ld\n", b.f_blocks);
printf("f_bfree = %ld\n", b.f_bfree);
printf("f_bavail = %ld\n", b.f_bavail);
return 0;
}
// Example output on my amd64 box, with the test binary residing on a
// btrfs partition.
// Native and emulated output after the fix:
//
// f_type = 0x9123683e
// f_bsize = 4096
// f_blocks = 268435456
// f_bfree = 168406890
// f_bavail = 168355058
// Output before the fix, note the messed layout:
//
// f_type = 0x10009123683e
// f_bsize = 723302085239504896
// f_blocks = 168355058
// f_bfree = 2250817541779750912
// f_bavail = 1099229433104
```
Fixes: 1f63019632 ("linux-user: Add LoongArch syscall support")
Signed-off-by: WANG Xuerui <xen0n@gentoo.org>
Cc: Song Gao <gaosong@loongson.cn>
Cc: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Cc: Andreas K. Hüttel <dilfridge@gentoo.org>
---
Resend with amended commit message to 100% clarify the example output
are generated on my box and will differ for everyone else. Sorry for
the noise.
linux-user/syscall_defs.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 01ee10a88f..77864de57f 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -2262,7 +2262,8 @@ struct target_statfs64 {
};
#elif (defined(TARGET_PPC64) || defined(TARGET_X86_64) || \
defined(TARGET_SPARC64) || defined(TARGET_AARCH64) || \
- defined(TARGET_RISCV)) && !defined(TARGET_ABI32)
+ defined(TARGET_RISCV) || defined(TARGET_LOONGARCH64)) && \
+ !defined(TARGET_ABI32)
struct target_statfs {
abi_long f_type;
abi_long f_bsize;
--
2.38.0
|
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