arm64: dose arm64 support the sysfs system call?

arm64: dose arm64 support the sysfs system call?

[wangyufen]

Hi,

I did ltp test on arm64, the sysfs testcases failed:

    sysfs01     0  TWARN  :  This test can only run on kernels that support the sysfs system call

because the __NR_sysfs didn't define in aarch64

Dose anyone know what number the sysfs system call is in aarch64?


Thanks,
Wang

arm64: dose arm64 support the sysfs system call?

[wangyufen]

On 2014/11/21 15:54, Wei Xu wrote:
> 
> 
> On 2014/11/21 15:27, wangyufen wrote:
>> Hi,
> 
> Hi Yufen,
> 
>> I did ltp test on arm64, the sysfs testcases failed:
>>
>>     sysfs01     0  TWARN  :  This test can only run on kernels that support the sysfs system call
>>
>> because the __NR_sysfs didn't define in aarch64
> 
> Have you been enabled the *CONFIG_COMPAT* in your .config?
> 
*CONFIG_COMPAT* already enabled
CONFIG_COMPAT_BRK=y
CONFIG_COMPAT_BINFMT_ELF=y
CONFIG_COMPAT=y

> The __NR_sysfs is defined at arch/arm64/include/asm/unistd32.h
> and arch/arm64/kernel/sys32.S is including it.
> 
in arch/arm64/include/asm/unistd32.h  defined :
__SYSCALL(135, sys_sysfs)

So I used 135 to test sysfs, I straced sysfs01, 

the syscall called rt_sigprocmask not sysfs:
rt_sigprocmask(SIG_UNBLOCK, [], 0x8, 0) = -1 EINVAL (Invalid argument)

> Hope it will fix your issues.
> 
> Best Regards,
> Wei
> 
>> Dose anyone know what number the sysfs system call is in aarch64?
>>
>>
>> Thanks,
>> Wang
>>
>> _______________________________________________
>> linuxarm mailing list
>> linuxarm at huawei.com
>> http://rnd-openeuler.huawei.com/mailman/listinfo/linuxarm
>>
>>
> 
> _______________________________________________
> linuxarm mailing list
> linuxarm at huawei.com
> http://rnd-openeuler.huawei.com/mailman/listinfo/linuxarm
> 
> 

arm64: dose arm64 support the sysfs system call?

[Arnd Bergmann]

On Friday 21 November 2014 15:27:02 wangyufen wrote:
> Hi,
> 
> I did ltp test on arm64, the sysfs testcases failed:
> 
>     sysfs01     0  TWARN  :  This test can only run on kernels that support the sysfs system call
> 
> because the __NR_sysfs didn't define in aarch64
> 
> Dose anyone know what number the sysfs system call is in aarch64?

It's disabled of course, because we don't support ancient libc
implementations. No modern Linux port has this.

	Arnd

arm64: dose arm64 support the sysfs system call?

[wangyufen]

On 2014/11/21 19:10, Arnd Bergmann wrote:
> On Friday 21 November 2014 15:27:02 wangyufen wrote:
>> Hi,
>>
>> I did ltp test on arm64, the sysfs testcases failed:
>>
>>     sysfs01     0  TWARN  :  This test can only run on kernels that support the sysfs system call
>>
>> because the __NR_sysfs didn't define in aarch64
>>
>> Dose anyone know what number the sysfs system call is in aarch64?
> 
> It's disabled of course, because we don't support ancient libc
> implementations. No modern Linux port has this.
> 
> 	Arnd
> 
> 

__NR__lchown32?__NR_lstat?__NR__sysctl?__NR_vserver have similar problems.

Dose aarch64 support those system call?

 How I distinguish the ancient libc implementations.

arm64: dose arm64 support the sysfs system call?

[Chanho Park]

Hi,

2014-12-05 11:07 GMT+09:00 wangyufen <wangyufen@huawei.com>:
>
> On 2014/11/21 19:10, Arnd Bergmann wrote:
> > On Friday 21 November 2014 15:27:02 wangyufen wrote:
> >> Hi,
> >>
> >> I did ltp test on arm64, the sysfs testcases failed:
> >>
> >>     sysfs01     0  TWARN  :  This test can only run on kernels that support the sysfs system call
> >>
> >> because the __NR_sysfs didn't define in aarch64
> >>
> >> Dose anyone know what number the sysfs system call is in aarch64?
> >
> > It's disabled of course, because we don't support ancient libc
> > implementations. No modern Linux port has this.
> >
> >       Arnd
> >
> >
>
> __NR__lchown32?__NR_lstat?__NR__sysctl?__NR_vserver have similar problems.
>
> Dose aarch64 support those system call?
>
>  How I distinguish the ancient libc implementations.

You can find the syscalls from include/uapi/asm-generic/unistd.h.
Please note below definitions are not defined on aarch64.
__ARCH_WANT_SYSCALL_NO_AT
__ARCH_WANT_SYSCALL_NO_FLAGS
__ARCH_WANT_SYSCALL_DEPRECATED

Best Regards,
Chanho Park