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[DVB]: Add compat ioctl handling.
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Based upon a patch by Guido Guenther <agx@sigxcpu.org>.

Some of these ioctls had embedded time_t objects
or pointers, so needed translation.

Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller committed Nov 16, 2005
1 parent 7b5603e commit 6e87abd
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133 changes: 133 additions & 0 deletions fs/compat_ioctl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -121,6 +121,11 @@

#include <linux/hiddev.h>

#include <linux/dvb/audio.h>
#include <linux/dvb/dmx.h>
#include <linux/dvb/frontend.h>
#include <linux/dvb/video.h>

#undef INCLUDES
#endif

Expand Down Expand Up @@ -413,6 +418,128 @@ static int do_video_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
return err;
}

struct compat_dmx_event {
dmx_event_t event;
compat_time_t timeStamp;
union
{
dmx_scrambling_status_t scrambling;
} u;
};

static int do_dmx_get_event(unsigned int fd, unsigned int cmd, unsigned long arg)
{
struct dmx_event kevent;
mm_segment_t old_fs = get_fs();
int err;

set_fs(KERNEL_DS);
err = sys_ioctl(fd, cmd, (unsigned long) &kevent);
set_fs(old_fs);

if (!err) {
struct compat_dmx_event __user *up = compat_ptr(arg);

err = put_user(kevent.event, &up->event);
err |= put_user(kevent.timeStamp, &up->timeStamp);
err |= put_user(kevent.u.scrambling, &up->u.scrambling);
if (err)
err = -EFAULT;
}

return err;
}

struct compat_video_event {
int32_t type;
compat_time_t timestamp;
union {
video_size_t size;
unsigned int frame_rate;
} u;
};

static int do_video_get_event(unsigned int fd, unsigned int cmd, unsigned long arg)
{
struct video_event kevent;
mm_segment_t old_fs = get_fs();
int err;

set_fs(KERNEL_DS);
err = sys_ioctl(fd, cmd, (unsigned long) &kevent);
set_fs(old_fs);

if (!err) {
struct compat_video_event __user *up = compat_ptr(arg);

err = put_user(kevent.type, &up->type);
err |= put_user(kevent.timestamp, &up->timestamp);
err |= put_user(kevent.u.size.w, &up->u.size.w);
err |= put_user(kevent.u.size.h, &up->u.size.h);
err |= put_user(kevent.u.size.aspect_ratio,
&up->u.size.aspect_ratio);
if (err)
err = -EFAULT;
}

return err;
}

struct compat_video_still_picture {
compat_uptr_t iFrame;
int32_t size;
};

static int do_video_stillpicture(unsigned int fd, unsigned int cmd, unsigned long arg)
{
struct compat_video_still_picture __user *up;
struct video_still_picture __user *up_native;
compat_uptr_t fp;
int32_t size;
int err;

up = (struct compat_video_still_picture __user *) arg;
err = get_user(fp, &up->iFrame);
err |= get_user(size, &up->size);
if (err)
return -EFAULT;

up_native =
compat_alloc_user_space(sizeof(struct video_still_picture));

put_user(compat_ptr(fp), &up_native->iFrame);
put_user(size, &up_native->size);

err = sys_ioctl(fd, cmd, (unsigned long) up_native);

return err;
}

struct compat_video_spu_palette {
int length;
compat_uptr_t palette;
};

static int do_video_set_spu_palette(unsigned int fd, unsigned int cmd, unsigned long arg)
{
struct compat_video_spu_palette __user *up;
struct video_spu_palette __user *up_native;
compat_uptr_t palp;
int length, err;

up = (struct compat_video_spu_palette __user *) arg;
err = get_user(palp, &up->palette);
err |= get_user(length, &up->length);

up_native = compat_alloc_user_space(sizeof(struct video_spu_palette));
put_user(compat_ptr(palp), &up_native->palette);
put_user(length, &up_native->length);

err = sys_ioctl(fd, cmd, (unsigned long) up_native);

return err;
}

#ifdef CONFIG_NET
static int do_siocgstamp(unsigned int fd, unsigned int cmd, unsigned long arg)
{
Expand Down Expand Up @@ -2954,5 +3081,11 @@ HANDLE_IOCTL(NCP_IOC_GETPRIVATEDATA_32, do_ncp_getprivatedata)
HANDLE_IOCTL(NCP_IOC_SETPRIVATEDATA_32, do_ncp_setprivatedata)
#endif

/* dvb */
HANDLE_IOCTL(DMX_GET_EVENT, do_dmx_get_event)
HANDLE_IOCTL(VIDEO_GET_EVENT, do_video_get_event)
HANDLE_IOCTL(VIDEO_STILLPICTURE, do_video_stillpicture)
HANDLE_IOCTL(VIDEO_SET_SPU_PALETTE, do_video_set_spu_palette)

#undef DECLARES
#endif
67 changes: 67 additions & 0 deletions include/linux/compat_ioctl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -795,3 +795,70 @@ COMPATIBLE_IOCTL(HIDIOCGFLAG)
COMPATIBLE_IOCTL(HIDIOCSFLAG)
COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINDEX)
COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINFO)
/* dvb */
COMPATIBLE_IOCTL(AUDIO_STOP)
COMPATIBLE_IOCTL(AUDIO_PLAY)
COMPATIBLE_IOCTL(AUDIO_PAUSE)
COMPATIBLE_IOCTL(AUDIO_CONTINUE)
COMPATIBLE_IOCTL(AUDIO_SELECT_SOURCE)
COMPATIBLE_IOCTL(AUDIO_SET_MUTE)
COMPATIBLE_IOCTL(AUDIO_SET_AV_SYNC)
COMPATIBLE_IOCTL(AUDIO_SET_BYPASS_MODE)
COMPATIBLE_IOCTL(AUDIO_CHANNEL_SELECT)
COMPATIBLE_IOCTL(AUDIO_GET_STATUS)
COMPATIBLE_IOCTL(AUDIO_GET_CAPABILITIES)
COMPATIBLE_IOCTL(AUDIO_CLEAR_BUFFER)
COMPATIBLE_IOCTL(AUDIO_SET_ID)
COMPATIBLE_IOCTL(AUDIO_SET_MIXER)
COMPATIBLE_IOCTL(AUDIO_SET_STREAMTYPE)
COMPATIBLE_IOCTL(AUDIO_SET_EXT_ID)
COMPATIBLE_IOCTL(AUDIO_SET_ATTRIBUTES)
COMPATIBLE_IOCTL(AUDIO_SET_KARAOKE)
COMPATIBLE_IOCTL(DMX_START)
COMPATIBLE_IOCTL(DMX_STOP)
COMPATIBLE_IOCTL(DMX_SET_FILTER)
COMPATIBLE_IOCTL(DMX_SET_PES_FILTER)
COMPATIBLE_IOCTL(DMX_SET_BUFFER_SIZE)
COMPATIBLE_IOCTL(DMX_GET_PES_PIDS)
COMPATIBLE_IOCTL(DMX_GET_CAPS)
COMPATIBLE_IOCTL(DMX_SET_SOURCE)
COMPATIBLE_IOCTL(DMX_GET_STC)
COMPATIBLE_IOCTL(FE_GET_INFO)
COMPATIBLE_IOCTL(FE_DISEQC_RESET_OVERLOAD)
COMPATIBLE_IOCTL(FE_DISEQC_SEND_MASTER_CMD)
COMPATIBLE_IOCTL(FE_DISEQC_RECV_SLAVE_REPLY)
COMPATIBLE_IOCTL(FE_DISEQC_SEND_BURST)
COMPATIBLE_IOCTL(FE_SET_TONE)
COMPATIBLE_IOCTL(FE_SET_VOLTAGE)
COMPATIBLE_IOCTL(FE_ENABLE_HIGH_LNB_VOLTAGE)
COMPATIBLE_IOCTL(FE_READ_STATUS)
COMPATIBLE_IOCTL(FE_READ_BER)
COMPATIBLE_IOCTL(FE_READ_SIGNAL_STRENGTH)
COMPATIBLE_IOCTL(FE_READ_SNR)
COMPATIBLE_IOCTL(FE_READ_UNCORRECTED_BLOCKS)
COMPATIBLE_IOCTL(FE_SET_FRONTEND)
COMPATIBLE_IOCTL(FE_GET_FRONTEND)
COMPATIBLE_IOCTL(FE_GET_EVENT)
COMPATIBLE_IOCTL(FE_DISHNETWORK_SEND_LEGACY_CMD)
COMPATIBLE_IOCTL(VIDEO_STOP)
COMPATIBLE_IOCTL(VIDEO_PLAY)
COMPATIBLE_IOCTL(VIDEO_FREEZE)
COMPATIBLE_IOCTL(VIDEO_CONTINUE)
COMPATIBLE_IOCTL(VIDEO_SELECT_SOURCE)
COMPATIBLE_IOCTL(VIDEO_SET_BLANK)
COMPATIBLE_IOCTL(VIDEO_GET_STATUS)
COMPATIBLE_IOCTL(VIDEO_SET_DISPLAY_FORMAT)
COMPATIBLE_IOCTL(VIDEO_FAST_FORWARD)
COMPATIBLE_IOCTL(VIDEO_SLOWMOTION)
COMPATIBLE_IOCTL(VIDEO_GET_CAPABILITIES)
COMPATIBLE_IOCTL(VIDEO_CLEAR_BUFFER)
COMPATIBLE_IOCTL(VIDEO_SET_ID)
COMPATIBLE_IOCTL(VIDEO_SET_STREAMTYPE)
COMPATIBLE_IOCTL(VIDEO_SET_FORMAT)
COMPATIBLE_IOCTL(VIDEO_SET_SYSTEM)
COMPATIBLE_IOCTL(VIDEO_SET_HIGHLIGHT)
COMPATIBLE_IOCTL(VIDEO_SET_SPU)
COMPATIBLE_IOCTL(VIDEO_GET_NAVI)
COMPATIBLE_IOCTL(VIDEO_SET_ATTRIBUTES)
COMPATIBLE_IOCTL(VIDEO_GET_SIZE)
COMPATIBLE_IOCTL(VIDEO_GET_FRAME_RATE)

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