Re: [Qemu-devel] [PATCH v6 2/6] linux-user: Add support for SIOCSPGRP ioctl for all targets

[Laurent Vivier <laurent@vivier.eu>]

On 19/05/2019 18:15, Aleksandar Markovic wrote:
> From: Aleksandar Markovic <amarkovic@wavecomp.com>
> 
> Add support for setting the process (or process group) to receive SIGIO
> or SIGURG signals when I/O becomes possible or urgent data is available,
> using SIOCSPGRP ioctl.
> 
> The ioctl numeric values for SIOCSPGRP are platform-dependent and are
> determined by following files in Linux kernel source tree:
> 
> arch/ia64/include/uapi/asm/sockios.h:#define SIOCSPGRP    0x8902
> arch/mips/include/uapi/asm/sockios.h:#define SIOCSPGRP    _IOW('s', 8, pid_t)
> arch/parisc/include/uapi/asm/sockios.h:#define SIOCSPGRP  0x8902
> arch/sh/include/uapi/asm/sockios.h:#define SIOCSPGRP      _IOW('s', 8, pid_t)
> arch/xtensa/include/uapi/asm/sockios.h:#define SIOCSPGRP  _IOW('s', 8, pid_t)
> arch/alpha/include/uapi/asm/sockios.h:#define SIOCSPGRP   _IOW('s', 8, pid_t)
> arch/sparc/include/uapi/asm/sockios.h:#define SIOCSPGRP   0x8902
> include/uapi/asm-generic/sockios.h:#define SIOCSPGRP      0x8902
> 
> Hence the different definition for alpha, mips, sh4, and xtensa.
> 
> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
> Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
> Reviewed-by: Laurent Vivier <laurent@vivier.eu>
> ---
>   linux-user/ioctls.h       | 1 +
>   linux-user/syscall_defs.h | 3 +++
>   2 files changed, 4 insertions(+)
> 
> diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
> index ae89516..c37adc5 100644
> --- a/linux-user/ioctls.h
> +++ b/linux-user/ioctls.h
> @@ -218,6 +218,7 @@
>     IOCTL(SIOCSRARP, IOC_W, MK_PTR(MK_STRUCT(STRUCT_arpreq)))
>     IOCTL(SIOCGRARP, IOC_R, MK_PTR(MK_STRUCT(STRUCT_arpreq)))
>     IOCTL(SIOCGIWNAME, IOC_W | IOC_R, MK_PTR(MK_STRUCT(STRUCT_char_ifreq)))
> +  IOCTL(SIOCSPGRP, IOC_W, MK_PTR(TYPE_INT)) /* pid_t */
>     IOCTL(SIOCGPGRP, IOC_R, MK_PTR(TYPE_INT)) /* pid_t */
>     IOCTL(SIOCGSTAMP, IOC_R, MK_PTR(MK_STRUCT(STRUCT_timeval)))
>     IOCTL(SIOCGSTAMPNS, IOC_R, MK_PTR(MK_STRUCT(STRUCT_timespec)))
> diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
> index 1e86fb9..2941231 100644
> --- a/linux-user/syscall_defs.h
> +++ b/linux-user/syscall_defs.h
> @@ -739,11 +739,14 @@ struct target_pollfd {
>   #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_SH4) ||    \
>          defined(TARGET_XTENSA)
>   #define TARGET_SIOCATMARK      TARGET_IOR('s', 7, int)
> +#define TARGET_SIOCSPGRP       TARGET_IOW('s', 8, pid_t)
>   #define TARGET_SIOCGPGRP       TARGET_IOR('s', 9, pid_t)
>   #else
>   #define TARGET_SIOCATMARK      0x8905
> +#define TARGET_SIOCSPGRP       0x8902
>   #define TARGET_SIOCGPGRP       0x8904
>   #endif
> +
>   #define TARGET_SIOCGSTAMP      0x8906          /* Get stamp (timeval) */
>   #define TARGET_SIOCGSTAMPNS    0x8907          /* Get stamp (timespec) */
>   
> 

Applied to my linux-user branch.

Thanks,
Laurent