[PATCH 4/4] drm: Add decoding of DRM and KMS ioctls

Tue Jun 9 14:29:31 UTC 2015

On Tue, Jun 09, 2015 at 03:51:08PM +0200, Gabriel Laskar wrote:
> On Tue,  9 Jun 2015 13:26:44 +0200
> Patrik Jakobsson <patrik.jakobsson at linux.intel.com> wrote:
> 
> > This patch adds many of the DRM and KMS ioctls. The rest can be added as
> > needed.
> > 
> > Signed-off-by: Patrik Jakobsson <patrik.jakobsson at linux.intel.com>
> > ---
> >  drm.c | 519 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >  1 file changed, 519 insertions(+)
> > 
> > diff --git a/drm.c b/drm.c
> > index fa98fb7..e550c34 100644
> > --- a/drm.c
> > +++ b/drm.c
> > @@ -82,6 +82,468 @@ int drm_is_driver(struct tcb *tcp, const char *name)
> >  	return strcmp(name, drv) == 0;
> >  }
> >  
> > +static int drm_version(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_version ver;
> > +	char *name, *date, *desc;
> > +	int ret;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &ver))
> > +		return 0;
> > +
> > +	name = calloc(ver.name_len + 1, 1);
> 
> We have some wrappers for that now, you can call xcalloc(), but it will
> die if this does not work. Your version have the advantage of not kill
> strace, and just not decode the argument.
> 

If ok I'll keep it as calloc? As you say, dying here is not really neccessary.

> > +	if (!name)
> > +		return 0;
> > +	ret = umovestr(tcp, (long)ver.name, ver.name_len, name);
> > +	if (ret < 0)
> > +		goto free_name;
> > +
> > +	date = calloc(ver.date_len + 1, 1);
> > +	if (!date)
> > +		goto free_name;
> > +	ret = umovestr(tcp, (long)ver.date, ver.date_len, date);
> > +	if (ret < 0)
> > +		goto free_date;
> > +
> > +	desc = calloc(ver.desc_len + 1, 1);
> > +	if (!desc)
> > +		goto free_date;
> > +	ret = umovestr(tcp, (long)ver.desc, ver.desc_len, desc);
> > +	if (ret < 0)
> > +		goto free_desc;
> > +
> > +	tprintf(", {version_major=%d, version_minor=%d, version_patchlevel=%d, "
> > +		"name_len=%lu, name=%s, date_len=%lu, date=%s, "
> > +		"desc_len=%lu, desc=%s}",
> > +		ver.version_major, ver.version_minor, ver.version_patchlevel,
> > +		ver.name_len, name, ver.date_len, date, ver.desc_len,
> > +		desc);
> > +
> > +free_desc:
> > +	free(desc);
> > +free_date:
> > +	free(date);
> > +free_name:
> > +	free(name);
> > +
> > +	if (ret < 0)
> > +		return 0;
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_get_unique(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_unique unique;
> > +	char *str;
> > +	int ret;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &unique))
> > +		return 0;
> > +
> > +	str = calloc(unique.unique_len + 1, 1);
> > +	if (!str)
> > +		return 0;
> > +	ret = umovestr(tcp, (long)unique.unique, unique.unique_len, str);
> > +
> 
> There is a check missing here

Oops, will fix.

> 
> > +	tprintf(", {unique_len=%lu, unique=%s}", unique.unique_len, str);
> > +
> > +	free(str);
> > +
> > +	if (ret < 0)
> > +		return 0;
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_get_magic(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_auth auth;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &auth))
> > +		return 0;
> > +
> > +	tprintf(", {magic=%u}", auth.magic);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_wait_vblank(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	union drm_wait_vblank vblank;
> > +
> > +	if (umove(tcp, arg, &vblank))
> > +		return 0;
> > +
> > +	if (entering(tcp)) {
> > +		tprintf(", {request={type=%u, sequence=%u, signal=%lu}",
> > +			vblank.request.type, vblank.request.sequence,
> > +			vblank.request.signal);
> > +	} else {
> > +		tprintf(", reply={type=%u, sequence=%u, tval_sec=%ld, tval_usec=%ld}}",
> > +			vblank.reply.type, vblank.reply.sequence,
> > +			vblank.reply.tval_sec, vblank.reply.tval_usec);
> > +	}
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_get_resources(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_card_res res;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &res))
> > +		return 0;
> > +
> > +	tprintf(", {fb_id_ptr=%p, crtc_id_ptr=%p, connector_id_ptr=%p, "
> > +		"encoder_id_ptr=%p, count_fbs=%u, count_crtcs=%u, "
> > +		"count_connectors=%u, count_encoders=%u, min_width=%u, "
> > +		"max_width=%u, min_height=%u, max_height=%u}",
> > +		(void *)res.fb_id_ptr, (void *)res.crtc_id_ptr,
> > +		(void *)res.connector_id_ptr, (void *)res.encoder_id_ptr,
> > +		res.count_fbs, res.count_crtcs, res.count_connectors,
> > +		res.count_encoders, res.min_width, res.max_width,
> > +		res.min_height, res.max_height);
> > +
> > +	return 1;
> > +}
> > +
> > +static void drm_mode_print_modeinfo(struct drm_mode_modeinfo *info)
> > +{
> > +	tprintf("clock=%u, hdisplay=%hu, hsync_start=%hu, hsync_end=%hu, "
> > +		"htotal=%hu, hskew=%hu, vdisplay=%hu, vsync_start=%hu, "
> > +		"vsync_end=%hu, vtotal=%hu, vscan=%hu, vrefresh=%u, "
> > +		"flags=0x%x, type=%u, name=%s", info->clock, info->hdisplay,
> > +		info->hsync_start, info->hsync_end, info->htotal, info->hskew,
> > +		info->vdisplay, info->vsync_start, info->vsync_end,
> > +		info->vtotal, info->vscan, info->vrefresh, info->flags,
> > +		info->type, info->name);
> > +}
> > +
> > +static int drm_mode_get_crtc(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_crtc crtc;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &crtc))
> > +		return 0;
> > +
> > +	tprintf(", {set_connectors_ptr=%p, count_connectors=%u, crtc_id=%u, "
> > +		"fb_id=%u, x=%u, y=%u, gamma_size=%u, mode_valid=%u, mode={",
> > +		(void *)crtc.set_connectors_ptr, crtc.count_connectors,
> > +		crtc.crtc_id, crtc.fb_id, crtc.x, crtc.y, crtc.gamma_size,
> > +		crtc.mode_valid);
> > +
> > +	drm_mode_print_modeinfo(&crtc.mode);
> > +	tprintf("}}");
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_set_crtc(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_crtc crtc;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &crtc))
> > +		return 0;
> > +
> > +	tprintf(", {set_connectors_ptr=%p, count_connectors=%u, crtc_id=%u, "
> > +		"fb_id=%u, x=%u, y=%u, gamma_size=%u, mode_valid=%u, mode={",
> > +		(void *)crtc.set_connectors_ptr, crtc.count_connectors,
> > +		crtc.crtc_id, crtc.fb_id, crtc.x, crtc.y, crtc.gamma_size,
> > +		crtc.mode_valid);
> > +
> > +	drm_mode_print_modeinfo(&crtc.mode);
> > +	tprintf("}}");
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_cursor(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_cursor cursor;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &cursor))
> > +		return 0;
> > +
> > +	tprintf(", {flags=0x%x, crtc_id=%u, x=%d, y=%d, width=%u, height=%u, "
> > +		"handle=%u}", cursor.flags, cursor.crtc_id, cursor.x, cursor.y,
> > +		cursor.width, cursor.height, cursor.handle);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_cursor2(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_cursor2 cursor;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &cursor))
> > +		return 0;
> > +
> > +	tprintf(", {flags=0x%x, crtc_id=%u, x=%d, y=%d, width=%u, height=%u, "
> > +		"handle=%u, hot_x=%d, hot_y=%d}", cursor.flags, cursor.crtc_id,
> > +		cursor.x, cursor.y, cursor.width, cursor.height, cursor.handle,
> > +		cursor.hot_x, cursor.hot_y);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_get_gamma(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_crtc_lut lut;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &lut))
> > +		return 0;
> > +
> > +	/* We don't print the entire table, just the pointers */
> > +	tprintf(", {crtc_id=%u, gamma_size=%u, red=%p, green=%p, blue=%p}",
> > +		lut.crtc_id, lut.gamma_size, (void *)lut.red, (void *)lut.green,
> > +		(void *)lut.blue);
> > +
> > +	return 1;
> > +}
> > +
> > +
> > +static int drm_mode_set_gamma(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_crtc_lut lut;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &lut))
> > +		return 0;
> > +
> > +	/* We don't print the entire table, just the rgb pointers */
> > +	tprintf(", {crtc_id=%u, gamma_size=%u, red=%p, green=%p, blue=%p}",
> > +		lut.crtc_id, lut.gamma_size, (void *)lut.red, (void *)lut.green,
> > +		(void *)lut.blue);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_get_encoder(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_get_encoder enc;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &enc))
> > +		return 0;
> > +
> > +	/* TODO: Print name of encoder type */
> > +	tprintf(", {encoder_id=%u, encoder_type=%u, crtc_id=%u, "
> > +		"possible_crtcs=0x%x, possible_clones=0x%x}", enc.encoder_id,
> > +		enc.encoder_type, enc.crtc_id, enc.possible_crtcs,
> > +		enc.possible_clones);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_get_connector(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_get_connector con;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &con))
> > +		return 0;
> > +
> > +	/* We could be very verbose here but keep is simple for now */
> > +	tprintf(", {encoders_ptr=%p, modes_ptr=%p, props_ptr=%p, "
> > +		"prop_values_ptr=%p, count_modes=%u, count_props=%u, "
> > +		"count_encoders=%u, encoder_id=%u, connector_id=%u, "
> > +		"connector_type=%u, connector_type_id=%u, connection=%u, "
> > +		"mm_width=%u, mm_height=%u, subpixel=%u}",
> > +		(void *)con.encoders_ptr, (void *)con.modes_ptr,
> > +		(void *)con.props_ptr, (void *)con.prop_values_ptr,
> > +		con.count_modes, con.count_props, con.count_encoders,
> > +		con.encoder_id, con.connector_id, con.connector_type,
> > +		con.connector_type_id, con.connection, con.mm_width,
> > +		con.mm_height, con.subpixel);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_attachmode(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_mode_cmd cmd;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &cmd))
> > +		return 0;
> > +
> > +	tprintf(", {connector_id=%u, mode={", cmd.connector_id);
> > +	drm_mode_print_modeinfo(&cmd.mode);
> > +	tprintf("}");
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_detachmode(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_mode_cmd cmd;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &cmd))
> > +		return 0;
> > +
> > +	tprintf(", {connector_id=%u, mode={", cmd.connector_id);
> > +	drm_mode_print_modeinfo(&cmd.mode);
> > +	tprintf("}");
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_get_property(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_get_property prop;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &prop))
> > +		return 0;
> > +
> > +	tprintf(", {values_ptr=%p, enum_blob_ptr=%p, prop_id=%u, flags=0x%x, "
> > +		"name=%s, count_values=%u, count_enum_blobs=%u}",
> > +		(void *)prop.values_ptr, (void *)prop.enum_blob_ptr,
> > +		prop.prop_id, prop.flags, prop.name, prop.count_values,
> > +		prop.count_enum_blobs);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_set_property(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_connector_set_property prop;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &prop))
> > +		return 0;
> > +
> > +	tprintf(", {value=%Lu, prop_id=%u, connector_id=%u}", prop.value,
> > +		prop.prop_id, prop.connector_id);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_get_prop_blob(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_get_blob blob;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &blob))
> > +		return 0;
> > +
> > +	tprintf(", {blob_id=%u, length=%u, data=%p}", blob.blob_id, blob.length,
> > +		(void *)blob.data);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_add_fb(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_fb_cmd cmd;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &cmd))
> > +		return 0;
> > +
> > +	tprintf(", {fb_id=%u, width=%u, height=%u, pitch=%u, bpp=%u, depth=%u, "
> > +		"handle=%u}", cmd.fb_id, cmd.width, cmd.height, cmd.pitch,
> > +		cmd.bpp, cmd.depth, cmd.handle);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_get_fb(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_fb_cmd cmd;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &cmd))
> > +		return 0;
> > +
> > +	tprintf(", {fb_id=%u, width=%u, height=%u, pitch=%u, bpp=%u, depth=%u, "
> > +		"handle=%u}", cmd.fb_id, cmd.width, cmd.height, cmd.pitch,
> > +		cmd.bpp, cmd.depth, cmd.handle);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_rm_fb(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	unsigned int handle;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &handle))
> > +		return 0;
> > +
> > +	tprintf(", %u", handle);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_page_flip(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_crtc_page_flip flip;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &flip))
> > +		return 0;
> > +
> > +	tprintf(", {crtc_id=%u, fb_id=%u, flags=0x%x, user_data=0x%Lx}",
> > +		flip.crtc_id, flip.fb_id, flip.flags, flip.user_data);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_dirty_fb(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_fb_dirty_cmd cmd;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &cmd))
> > +		return 0;
> > +
> > +	tprintf(", {fb_id=%u, flags=0x%x, color=0x%x, num_clips=%u, "
> > +		"clips_ptr=%p}", cmd.fb_id, cmd.flags, cmd.color, cmd.num_clips,
> > +		(void *)cmd.clips_ptr);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_create_dumb(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_create_dumb dumb;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &dumb))
> > +		return 0;
> > +
> > +	tprintf(", {height=%u, width=%u, bpp=%u, flags=0x%x, handle=%u, "
> > +		"pitch=%u, size=%Lu}", dumb.height, dumb.width, dumb.bpp,
> > +		dumb.flags, dumb.handle, dumb.pitch, dumb.size);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_map_dumb(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_map_dumb dumb;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &dumb))
> > +		return 0;
> > +
> > +	tprintf(", {handle=%u, offset=%Lu}", dumb.handle, dumb.offset);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_mode_destroy_dumb(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_mode_destroy_dumb dumb;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &dumb))
> > +		return 0;
> > +
> > +	tprintf(", {handle=%u}", dumb.handle);
> > +
> > +	return 1;
> > +}
> > +
> > +static int drm_gem_close(struct tcb *tcp, const unsigned int code, long arg)
> > +{
> > +	struct drm_gem_close close;
> > +
> > +	if (entering(tcp) || umove(tcp, arg, &close))
> > +		return 0;
> > +
> > +	tprintf(", {handle=%u}", close.handle);
> > +
> > +	return 1;
> > +}
> > +
> >  int drm_ioctl(struct tcb *tcp, const unsigned int code, long arg)
> >  {
> >  	/* Check for device specific ioctls */
> > @@ -90,5 +552,62 @@ int drm_ioctl(struct tcb *tcp, const unsigned int code, long arg)
> >  			return drm_i915_ioctl(tcp, code, arg);
> >  	}
> >  
> > +	switch (code) {
> > +	case DRM_IOCTL_VERSION:
> > +		return drm_version(tcp, code, arg);
> > +	case DRM_IOCTL_GET_UNIQUE:
> > +		return drm_get_unique(tcp, code, arg);
> > +	case DRM_IOCTL_GET_MAGIC:
> > +		return drm_get_magic(tcp, code, arg);
> > +	case DRM_IOCTL_WAIT_VBLANK:
> > +		return drm_wait_vblank(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_GETRESOURCES:
> > +		return drm_mode_get_resources(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_GETCRTC:
> > +		return drm_mode_get_crtc(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_SETCRTC:
> > +		return drm_mode_set_crtc(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_CURSOR:
> > +		return drm_mode_cursor(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_CURSOR2:
> > +		return drm_mode_cursor2(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_GETGAMMA:
> > +		return drm_mode_get_gamma(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_SETGAMMA:
> > +		return drm_mode_set_gamma(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_GETENCODER:
> > +		return drm_mode_get_encoder(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_GETCONNECTOR:
> > +		return drm_mode_get_connector(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_ATTACHMODE:
> > +		return drm_mode_attachmode(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_DETACHMODE:
> > +		return drm_mode_detachmode(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_GETPROPERTY:
> > +		return drm_mode_get_property(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_SETPROPERTY:
> > +		return drm_mode_set_property(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_GETPROPBLOB:
> > +		return drm_mode_get_prop_blob(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_GETFB:
> > +		return drm_mode_get_fb(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_ADDFB:
> > +		return drm_mode_add_fb(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_RMFB:
> > +		return drm_mode_rm_fb(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_PAGE_FLIP:
> > +		return drm_mode_page_flip(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_DIRTYFB:
> > +		return drm_mode_dirty_fb(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_CREATE_DUMB:
> > +		return drm_mode_create_dumb(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_MAP_DUMB:
> > +		return drm_mode_map_dumb(tcp, code, arg);
> > +	case DRM_IOCTL_MODE_DESTROY_DUMB:
> > +		return drm_mode_destroy_dumb(tcp, code, arg);
> > +	case DRM_IOCTL_GEM_CLOSE:
> > +		return drm_gem_close(tcp, code, arg);
> > +	}
> > +
> >  	return 0;
> >  }
> 
> 
> 
> -- 
> Gabriel Laskar