Re: syscall problem on Android x86

[Jens Axboe <axboe@kernel.dk>]

On Fri, Apr 26 2013, Akers, Jason B wrote:
> Hi Jens,
> 
> Sorry for the confusion. I'm building for x86 Android, not arm.
> 
> The issue is that Android x86 does not define __NR_shmget. And the
> fact that it's hardcoded to 29 in arch-x86.h is causing problems. On
> x86 Android syscall 29 is actually the sys_pause() function.
> Therefore, fio compiles but it just pauses when shmget() is called.

Ah I see, so android x86  You could hack around it a little bit. In
arch-x86.h, something ala:

#ifndef __NR_shmget
#if defined(__ANDROID__)
#define __NR_shmget		 a
#define __NR_shmat		 b
#define __NR_shmctl		 c
#define __NR_shmdt		 d
#else
#define __NR_shmget		 29
#define __NR_shmat		 30
#define __NR_shmctl		 31
#define __NR_shmdt		 67
#endif
#endif

with a/b/c/d being the right values for the android abi.

-- 
Jens Axboe