vmware-vga: add vmsvga_verify_rect
Add verification function for rectangles, returning true if verification passes and false otherwise. Cc: qemu-stable@nongnu.org Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Don Koch <dkoch@verizon.com>
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@ -294,6 +294,57 @@ enum {
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SVGA_CURSOR_ON_RESTORE_TO_FB = 3,
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};
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static inline bool vmsvga_verify_rect(DisplaySurface *surface,
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const char *name,
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int x, int y, int w, int h)
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{
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if (x < 0) {
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fprintf(stderr, "%s: x was < 0 (%d)\n", name, x);
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return false;
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}
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if (x > SVGA_MAX_WIDTH) {
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fprintf(stderr, "%s: x was > %d (%d)\n", name, SVGA_MAX_WIDTH, x);
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return false;
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}
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if (w < 0) {
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fprintf(stderr, "%s: w was < 0 (%d)\n", name, w);
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return false;
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}
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if (w > SVGA_MAX_WIDTH) {
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fprintf(stderr, "%s: w was > %d (%d)\n", name, SVGA_MAX_WIDTH, w);
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return false;
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}
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if (x + w > surface_width(surface)) {
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fprintf(stderr, "%s: width was > %d (x: %d, w: %d)\n",
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name, surface_width(surface), x, w);
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return false;
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}
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if (y < 0) {
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fprintf(stderr, "%s: y was < 0 (%d)\n", name, y);
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return false;
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}
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if (y > SVGA_MAX_HEIGHT) {
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fprintf(stderr, "%s: y was > %d (%d)\n", name, SVGA_MAX_HEIGHT, y);
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return false;
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}
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if (h < 0) {
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fprintf(stderr, "%s: h was < 0 (%d)\n", name, h);
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return false;
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}
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if (h > SVGA_MAX_HEIGHT) {
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fprintf(stderr, "%s: h was > %d (%d)\n", name, SVGA_MAX_HEIGHT, h);
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return false;
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}
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if (y + h > surface_height(surface)) {
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fprintf(stderr, "%s: update height > %d (y: %d, h: %d)\n",
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name, surface_height(surface), y, h);
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return false;
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}
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return true;
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}
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static inline void vmsvga_update_rect(struct vmsvga_state_s *s,
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int x, int y, int w, int h)
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{
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