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Diffstat (limited to 'src/XF86VMode.c')
-rw-r--r--src/XF86VMode.c21
1 files changed, 13 insertions, 8 deletions
diff --git a/src/XF86VMode.c b/src/XF86VMode.c
index bd54937..a32564e 100644
--- a/src/XF86VMode.c
+++ b/src/XF86VMode.c
@@ -1110,6 +1110,7 @@ XF86VidModeGetGammaRamp (
XExtDisplayInfo *info = find_display (dpy);
xXF86VidModeGetGammaRampReq *req;
xXF86VidModeGetGammaRampReply rep;
+ Bool result = True;
XF86VidModeCheckExtension (dpy, info, False);
@@ -1120,19 +1121,23 @@ XF86VidModeGetGammaRamp (
req->screen = screen;
req->size = size;
if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) {
- UnlockDisplay (dpy);
- SyncHandle ();
- return False;
+ result = False;
}
- if(rep.size) {
- _XRead(dpy, (char*)red, rep.size << 1);
- _XRead(dpy, (char*)green, rep.size << 1);
- _XRead(dpy, (char*)blue, rep.size << 1);
+ else if (rep.size) {
+ if (rep.size <= size) {
+ _XRead(dpy, (char*)red, rep.size << 1);
+ _XRead(dpy, (char*)green, rep.size << 1);
+ _XRead(dpy, (char*)blue, rep.size << 1);
+ }
+ else {
+ _XEatDataWords(dpy, rep.length);
+ result = False;
+ }
}
UnlockDisplay(dpy);
SyncHandle();
- return True;
+ return result;
}
Bool XF86VidModeGetGammaRampSize(