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-rw-r--r--c/src/lib/libc/ioctl.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/c/src/lib/libc/ioctl.c b/c/src/lib/libc/ioctl.c
index 8d84a26a15..ce74ba7cf4 100644
--- a/c/src/lib/libc/ioctl.c
+++ b/c/src/lib/libc/ioctl.c
@@ -41,6 +41,9 @@ int ioctl(
* Now process the ioctl().
*/
+ if ( !iop->handlers )
+ set_errno_and_return_minus_one( EBADF );
+
if ( !iop->handlers->ioctl )
set_errno_and_return_minus_one( ENOTSUP );