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linux-dmabuf-v1: properly validate flags

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We were send a protocol error if INTERLACED or BOTTOM_FIRST was
set. This is incorrect for the zwp_linux_dmabuf_params.create
code-path because this kills the client without allowing it to
gracefully handle the error.

We should only send a protocol error if the client provides a bit
not listed in the protocol definition.
This commit is contained in:
Simon Ser 2021-11-16 22:55:54 +01:00 committed by Simon Zeni
parent 8274c85d21
commit 9a4e1095ca
1 changed files with 11 additions and 8 deletions
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19
types/wlr_linux_dmabuf_v1.c
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@ -204,6 +204,17 @@ static void params_create_common(struct wl_resource *params_resource,
goto err_out; goto err_out;
} }
/* reject unknown flags */
uint32_t all_flags = ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT |
ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_INTERLACED |
ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_BOTTOM_FIRST;
if (flags & ~all_flags) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_FORMAT,
"Unknown dmabuf flags %"PRIu32, flags);
goto err_out;
}
attribs.width = width; attribs.width = width;
attribs.height = height; attribs.height = height;
attribs.format = format; attribs.format = format;
@ -265,14 +276,6 @@ static void params_create_common(struct wl_resource *params_resource,
} }
} }
/* reject unknown flags */
if (attribs.flags & ~ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT) {
wl_resource_post_error(params_resource,
ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_FORMAT,
"Unknown dmabuf flags %"PRIu32, attribs.flags);
goto err_out;
}
/* Check if dmabuf is usable */ /* Check if dmabuf is usable */
if (!check_import_dmabuf(linux_dmabuf, &attribs)) { if (!check_import_dmabuf(linux_dmabuf, &attribs)) {
goto err_failed; goto err_failed;