[santizer] Disable several EVIOxxx ioctls on older kernels.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184539 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 7 deletions

diff --git a/lib/sanitizer_common/sanitizer_common_interceptors_ioctl.inc b/lib/sanitizer_common/sanitizer_common_interceptors_ioctl.inc
index 80f252196..887530aed 100755
--- a/lib/sanitizer_common/sanitizer_common_interceptors_ioctl.inc
+++ b/lib/sanitizer_common/sanitizer_common_interceptors_ioctl.inc
@@ -33,13 +33,15 @@ static unsigned ioctl_table_size = 0;
 // require a global initializer. And this table must be available before global
 // initializers are run.
 static void ioctl_table_fill() {
-#define _(rq, tp, sz)                                  \
-  CHECK(ioctl_table_size < ioctl_table_max);           \
-  ioctl_table[ioctl_table_size].req = IOCTL_##rq;      \
-  ioctl_table[ioctl_table_size].type = ioctl_desc::tp; \
-  ioctl_table[ioctl_table_size].size = sz;             \
-  ioctl_table[ioctl_table_size].name = #rq;            \
-  ++ioctl_table_size;
+#define _(rq, tp, sz)                                    \
+  if (IOCTL_##rq != IOCTL_NOT_PRESENT) {                 \
+    CHECK(ioctl_table_size < ioctl_table_max);           \
+    ioctl_table[ioctl_table_size].req = IOCTL_##rq;      \
+    ioctl_table[ioctl_table_size].type = ioctl_desc::tp; \
+    ioctl_table[ioctl_table_size].size = sz;             \
+    ioctl_table[ioctl_table_size].name = #rq;            \
+    ++ioctl_table_size;                                  \
+  }
 
   _(FIOASYNC, READ, sizeof(int));
   _(FIOCLEX, NONE, 0);