arm64: dose arm64 support the sysfs system call?

On 2014/11/21 15:54, Wei Xu wrote:

On 2014/11/21 15:27, wangyufen wrote:

quoted

Hi,

Hi Yufen,

quoted

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

quoted

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