1 files changed, 19 insertions, 0 deletions
diff --git a/bsd-user/strace.c b/bsd-user/strace.c
index b2633d0cb4..e33dd4d48f 100644
--- a/bsd-user/strace.c
+++ b/bsd-user/strace.c
@@ -89,6 +89,25 @@ static void print_execve(const struct syscallname *name, abi_long arg1,
     gemu_log("NULL})");
 }
 
+static void print_ioctl(const struct syscallname *name,
+        abi_long arg1, abi_long arg2, abi_long arg3, abi_long arg4,
+        abi_long arg5, abi_long arg6)
+{
+    /* Decode the ioctl request */
+    gemu_log("%s(%d, 0x%0lx { IO%s%s GRP:0x%x('%c') CMD:%d LEN:%d }, 0x"
+            TARGET_ABI_FMT_lx ", ...)",
+            name->name,
+            (int)arg1,
+            (unsigned long)arg2,
+            arg2 & IOC_OUT ? "R" : "",
+            arg2 & IOC_IN ? "W" : "",
+            (unsigned)IOCGROUP(arg2),
+            isprint(IOCGROUP(arg2)) ? (char)IOCGROUP(arg2) : '?',
+            (int)arg2 & 0xFF,
+            (int)IOCPARM_LEN(arg2),
+            arg3);
+}
+
 /*
  * Variants for the return value output function
  */