diff mbox series

[v2,1/2] linux-user: Add thunk argument types for SIOCGSTAMP and SIOCGSTAMPNS

Message ID 20200616105147.21736-2-filip.bozuta@syrmia.com
State New
Headers show
Series Add strace support for printing arguments for ioctls | expand

Commit Message

Filip Bozuta June 16, 2020, 10:51 a.m. UTC 
From: Filip Bozuta <Filip.Bozuta@syrmia.com>

Socket ioctls SIOCGSTAMP and SIOCGSTAMPNS, used for timestamping the socket
connection, are defined in file "ioctls.h" differently from other ioctls.
The reason for this difference is explained in the comments above their definition.
These ioctls didn't have defined thunk argument types before changes from this
patch. They have special handling functions ("do_ioctl_SIOCGSTAMP" and
"do_ioctl_SIOCGSTAMPNS") that take care of setting values for approppriate argument
types (struct timeval and struct timespec) and thus no thunk argument types were
needed for their implementation. But this patch adds those argument type definitions
in file "syscall_types.h" and "ioctls.h" as it is needed for printing arguments
of these ioctls with strace.

Implementation notes:

    There are two variants of these ioctls: SIOCGSTAMP_OLD/SIOCGSTAM_NEW and
    SIOCGSTAMPNS_OLD/SIOCGSTAMPNS_NEW. One is the old existing definition and the
    other is the 2038 safe variant used for 32-bit architectures. Corresponding
    structure definitions STRUCT_timespec/STRUCT__kernel_timespec and
    STRUCT_timeval/STRUCT__kernel_sock_timeval were added for these variants.
    STRUCT_timeval definition was already inside the file as it is used by
    another implemented ioctl. Two cases were added for definitions
    STRUCT_timeval/STRUCT__kernel_sock_timeval to manage the case when the
    "u_sec" field of the timeval structure is of type int.

Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
---
 linux-user/ioctls.h        | 12 ++++++++----
 linux-user/syscall_types.h | 22 ++++++++++++++++++++++
 2 files changed, 30 insertions(+), 4 deletions(-)

Comments

Laurent Vivier June 18, 2020, 2:24 p.m. UTC | #1 
Le 16/06/2020 à 12:51, Filip Bozuta a écrit :
> From: Filip Bozuta <Filip.Bozuta@syrmia.com>
> 
> Socket ioctls SIOCGSTAMP and SIOCGSTAMPNS, used for timestamping the socket
> connection, are defined in file "ioctls.h" differently from other ioctls.
> The reason for this difference is explained in the comments above their definition.
> These ioctls didn't have defined thunk argument types before changes from this
> patch. They have special handling functions ("do_ioctl_SIOCGSTAMP" and
> "do_ioctl_SIOCGSTAMPNS") that take care of setting values for approppriate argument
> types (struct timeval and struct timespec) and thus no thunk argument types were
> needed for their implementation. But this patch adds those argument type definitions
> in file "syscall_types.h" and "ioctls.h" as it is needed for printing arguments
> of these ioctls with strace.
> 
> Implementation notes:
> 
>     There are two variants of these ioctls: SIOCGSTAMP_OLD/SIOCGSTAM_NEW and
>     SIOCGSTAMPNS_OLD/SIOCGSTAMPNS_NEW. One is the old existing definition and the
>     other is the 2038 safe variant used for 32-bit architectures. Corresponding
>     structure definitions STRUCT_timespec/STRUCT__kernel_timespec and
>     STRUCT_timeval/STRUCT__kernel_sock_timeval were added for these variants.
>     STRUCT_timeval definition was already inside the file as it is used by
>     another implemented ioctl. Two cases were added for definitions
>     STRUCT_timeval/STRUCT__kernel_sock_timeval to manage the case when the
>     "u_sec" field of the timeval structure is of type int.
> 
> Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
> ---
>  linux-user/ioctls.h        | 12 ++++++++----
>  linux-user/syscall_types.h | 22 ++++++++++++++++++++++
>  2 files changed, 30 insertions(+), 4 deletions(-)
> 
> diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
> index 0defa1d8c1..edb7172207 100644
> --- a/linux-user/ioctls.h
> +++ b/linux-user/ioctls.h
> @@ -279,13 +279,17 @@
>     * FIXME: create a macro to define this kind of entry
>     */
>    { TARGET_SIOCGSTAMP_OLD, TARGET_SIOCGSTAMP_OLD,
> -    "SIOCGSTAMP_OLD", IOC_R, do_ioctl_SIOCGSTAMP },
> +    "SIOCGSTAMP_OLD", IOC_R, do_ioctl_SIOCGSTAMP,
> +    { MK_PTR(MK_STRUCT(STRUCT_timeval)) } },
>    { TARGET_SIOCGSTAMPNS_OLD, TARGET_SIOCGSTAMPNS_OLD,
> -    "SIOCGSTAMPNS_OLD", IOC_R, do_ioctl_SIOCGSTAMPNS },
> +    "SIOCGSTAMPNS_OLD", IOC_R, do_ioctl_SIOCGSTAMPNS,
> +    { MK_PTR(MK_STRUCT(STRUCT_timespec)) } },
>    { TARGET_SIOCGSTAMP_NEW, TARGET_SIOCGSTAMP_NEW,
> -    "SIOCGSTAMP_NEW", IOC_R, do_ioctl_SIOCGSTAMP },
> +    "SIOCGSTAMP_NEW", IOC_R, do_ioctl_SIOCGSTAMP,
> +    { MK_PTR(MK_STRUCT(STRUCT__kernel_sock_timeval)) } },
>    { TARGET_SIOCGSTAMPNS_NEW, TARGET_SIOCGSTAMPNS_NEW,
> -    "SIOCGSTAMPNS_NEW", IOC_R, do_ioctl_SIOCGSTAMPNS },
> +    "SIOCGSTAMPNS_NEW", IOC_R, do_ioctl_SIOCGSTAMPNS,
> +    { MK_PTR(MK_STRUCT(STRUCT__kernel_timespec)) } },
>  
>    IOCTL(RNDGETENTCNT, IOC_R, MK_PTR(TYPE_INT))
>    IOCTL(RNDADDTOENTCNT, IOC_W, MK_PTR(TYPE_INT))
> diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h
> index 4e12c1661e..d636561bf4 100644
> --- a/linux-user/syscall_types.h
> +++ b/linux-user/syscall_types.h
> @@ -137,10 +137,32 @@ STRUCT(snd_timer_params,
>         TYPE_INT, /* filter */
>         MK_ARRAY(TYPE_CHAR, 60)) /* reserved */
>  
> +#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
> +STRUCT(timeval,
> +       TYPE_LONG, /* tv_sec */
> +       TYPE_INT) /* tv_usec */
> +
> +STRUCT(_kernel_sock_timeval,
> +       TYPE_LONG, /* tv_sec */
> +       TYPE_INT) /* tv_usec */
> +#else
> +STRUCT(timeval,
> +       TYPE_LONG, /* tv_sec */
> +       TYPE_LONG) /* tv_usec */
> +
> +STRUCT(_kernel_sock_timeval,
> +       TYPE_LONGLONG, /* tv_sec */
> +       TYPE_LONGLONG) /* tv_usec */
> +#endif
> +
>  STRUCT(timespec,
>         TYPE_LONG, /* tv_sec */
>         TYPE_LONG) /* tv_nsec */
>  
> +STRUCT(_kernel_timespec,
> +       TYPE_LONGLONG, /* tv_sec */
> +       TYPE_LONGLONG) /* tv_nsec */
> +
>  STRUCT(snd_timer_status,
>         MK_STRUCT(STRUCT_timespec), /* tstamp */
>         TYPE_INT, /* resolution */
> 

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
diff mbox series

Patch

diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
index 0defa1d8c1..edb7172207 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -279,13 +279,17 @@ 
    * FIXME: create a macro to define this kind of entry
    */
   { TARGET_SIOCGSTAMP_OLD, TARGET_SIOCGSTAMP_OLD,
-    "SIOCGSTAMP_OLD", IOC_R, do_ioctl_SIOCGSTAMP },
+    "SIOCGSTAMP_OLD", IOC_R, do_ioctl_SIOCGSTAMP,
+    { MK_PTR(MK_STRUCT(STRUCT_timeval)) } },
   { TARGET_SIOCGSTAMPNS_OLD, TARGET_SIOCGSTAMPNS_OLD,
-    "SIOCGSTAMPNS_OLD", IOC_R, do_ioctl_SIOCGSTAMPNS },
+    "SIOCGSTAMPNS_OLD", IOC_R, do_ioctl_SIOCGSTAMPNS,
+    { MK_PTR(MK_STRUCT(STRUCT_timespec)) } },
   { TARGET_SIOCGSTAMP_NEW, TARGET_SIOCGSTAMP_NEW,
-    "SIOCGSTAMP_NEW", IOC_R, do_ioctl_SIOCGSTAMP },
+    "SIOCGSTAMP_NEW", IOC_R, do_ioctl_SIOCGSTAMP,
+    { MK_PTR(MK_STRUCT(STRUCT__kernel_sock_timeval)) } },
   { TARGET_SIOCGSTAMPNS_NEW, TARGET_SIOCGSTAMPNS_NEW,
-    "SIOCGSTAMPNS_NEW", IOC_R, do_ioctl_SIOCGSTAMPNS },
+    "SIOCGSTAMPNS_NEW", IOC_R, do_ioctl_SIOCGSTAMPNS,
+    { MK_PTR(MK_STRUCT(STRUCT__kernel_timespec)) } },
 
   IOCTL(RNDGETENTCNT, IOC_R, MK_PTR(TYPE_INT))
   IOCTL(RNDADDTOENTCNT, IOC_W, MK_PTR(TYPE_INT))
diff --git a/linux-user/syscall_types.h b/linux-user/syscall_types.h
index 4e12c1661e..d636561bf4 100644
--- a/linux-user/syscall_types.h
+++ b/linux-user/syscall_types.h
@@ -137,10 +137,32 @@  STRUCT(snd_timer_params,
        TYPE_INT, /* filter */
        MK_ARRAY(TYPE_CHAR, 60)) /* reserved */
 
+#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
+STRUCT(timeval,
+       TYPE_LONG, /* tv_sec */
+       TYPE_INT) /* tv_usec */
+
+STRUCT(_kernel_sock_timeval,
+       TYPE_LONG, /* tv_sec */
+       TYPE_INT) /* tv_usec */
+#else
+STRUCT(timeval,
+       TYPE_LONG, /* tv_sec */
+       TYPE_LONG) /* tv_usec */
+
+STRUCT(_kernel_sock_timeval,
+       TYPE_LONGLONG, /* tv_sec */
+       TYPE_LONGLONG) /* tv_usec */
+#endif
+
 STRUCT(timespec,
        TYPE_LONG, /* tv_sec */
        TYPE_LONG) /* tv_nsec */
 
+STRUCT(_kernel_timespec,
+       TYPE_LONGLONG, /* tv_sec */
+       TYPE_LONGLONG) /* tv_nsec */
+
 STRUCT(snd_timer_status,
        MK_STRUCT(STRUCT_timespec), /* tstamp */
        TYPE_INT, /* resolution */