[PATCH] [sanitizer] Implement ioctl decoding.

[Sergey Matveev]

================
Comment at: lib/sanitizer_common/sanitizer_common_interceptors_ioctl.inc:496
@@ -495,3 +495,3 @@
 #if SANITIZER_LINUX
   if ((req & ~0x3fff001fU) == IOCTL_EVIOCGBIT)
     return IOCTL_EVIOCGBIT;
----------------
Evgeniy Stepanov wrote:
> Please rewrite this using new macros.
I would if I understood those masks. What do they represent?

================
Comment at: lib/sanitizer_common/sanitizer_platform_limits_posix.h:522
@@ +521,3 @@
+#define IOC_TYPEBITS 8
+#define IOC_SIZEBITS 14
+#define IOC_DIRBITS 2
----------------
Evgeniy Stepanov wrote:
> What about powerpc?
Do we build any of this on PPC right now? If not, I'd prefer to deal with this when we do. After all I only have second-hand knowledge that it's different on PPC.

We have compiler checks so there won't be any silent breakage.


http://llvm-reviews.chandlerc.com/D2689