Re: [PULL 1/6] linux-user/sparc: Don't use 16-bit UIDs on SPARC V9

[Laurent Vivier]

On 3/30/23 15:18, Philippe Mathieu-Daudé wrote:
> The 64-bit SPARC V9 syscall ABI uses 32-bit UIDs. Only enable
> the 16-bit UID wrappers for 32-bit SPARC (V7 and V8).
>
> Possibly missed in commit 992f48a036 ("Support for 32 bit
> ABI on 64 bit targets (only enabled Sparc64)").
>
> Reported-by: Gregor Riepl <onitake@gmail.com>
> Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
> Tested-by: Zach van Rijn <me@zv.io>
> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1394
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> Acked-by: Laurent Vivier <laurent@vivier.eu>
> Message-Id: <20230327131910.78564-1-philmd@linaro.org>
> ---
>   linux-user/syscall_defs.h | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
> index 614a1cbc8e..cc37054cb5 100644
> --- a/linux-user/syscall_defs.h
> +++ b/linux-user/syscall_defs.h
> @@ -61,7 +61,7 @@
>   
>   #if (defined(TARGET_I386) && defined(TARGET_ABI32)) \
>       || (defined(TARGET_ARM) && defined(TARGET_ABI32)) \
> -    || defined(TARGET_SPARC) \
> +    || (defined(TARGET_SPARC) && defined(TARGET_ABI32)) \
>       || defined(TARGET_M68K) || defined(TARGET_SH4) || defined(TARGET_CRIS)
>       /* 16 bit uid wrappers emulation */
>   #define USE_UID16

This patch breaks something with LTP (20230127) test fchown05_16 on sid/sparc64:

tst_test.c:1558: TINFO: Timeout per run is 0h 00m 30s
fchown05.c:44: TPASS: fchown(3, 700, 701), change owner/group ids passed
fchown05.c:44: TPASS: fchown(3, 702, -1), change owner id only passed
fchown05.c:49: TFAIL: testfile: incorrect ownership set, expected 702 701
fchown05.c:44: TPASS: fchown(3, 703, 701), change owner id only passed
fchown05.c:44: TPASS: fchown(3, -1, 704), change group id only passed
fchown05.c:49: TFAIL: testfile: incorrect ownership set, expected 703 704
fchown05.c:44: TPASS: fchown(3, 703, 705), change group id only passed
fchown05.c:44: TPASS: fchown(3, -1, -1), no change passed
fchown05.c:49: TFAIL: testfile: incorrect ownership set, expected 703 705

expected result;

tst_test.c:1558: TINFO: Timeout per run is 0h 00m 30s
fchown05.c:44: TPASS: fchown(3, 700, 701), change owner/group ids passed
fchown05.c:44: TPASS: fchown(3, 702, -1), change owner id only passed
fchown05.c:44: TPASS: fchown(3, 703, 701), change owner id only passed
fchown05.c:44: TPASS: fchown(3, -1, 704), change group id only passed
fchown05.c:44: TPASS: fchown(3, 703, 705), change group id only passed
fchown05.c:44: TPASS: fchown(3, -1, -1), no change passed

Thanks,
Laurent