Fix no-arg ioctls on Darwin.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11714

diff --git a/coregrind/m_syswrap/syswrap-darwin.c b/coregrind/m_syswrap/syswrap-darwin.c
index 0df78a0bed16c896f35b93dffc41183a8c12fb48..c1884dfa92c1e8c44fb36542888792fedfcefc6d 100644 (file)
--- a/coregrind/m_syswrap/syswrap-darwin.c
+++ b/coregrind/m_syswrap/syswrap-darwin.c
@@ -690,9 +690,23 @@ void ML_(sync_mappings)(const HChar *when, const HChar *where, Int num)
 PRE(ioctl)
 {
    *flags |= SfMayBlock;
-   PRINT("ioctl ( %ld, 0x%lx, %#lx )",ARG1,ARG2,ARG3);
-   PRE_REG_READ3(long, "ioctl",
-                 unsigned int, fd, unsigned int, request, unsigned long, arg);
+
+   /* Handle ioctls that don't take an arg first */
+   switch (ARG2 /* request */) {
+   case VKI_TIOCSCTTY:
+   case VKI_TIOCEXCL:
+   case VKI_TIOCPTYGRANT:
+   case VKI_TIOCPTYUNLK:
+   case VKI_DTRACEHIOC_REMOVE: 
+      PRINT("ioctl ( %ld, 0x%lx )",ARG1,ARG2);
+      PRE_REG_READ2(long, "ioctl",
+                    unsigned int, fd, unsigned int, request);
+      return;
+   default:
+      PRINT("ioctl ( %ld, 0x%lx, %#lx )",ARG1,ARG2,ARG3);
+      PRE_REG_READ3(long, "ioctl",
+                    unsigned int, fd, unsigned int, request, unsigned long, arg);
+   }
 
    switch (ARG2 /* request */) {
    case VKI_TIOCGWINSZ:
@@ -721,9 +735,6 @@ PRE(ioctl)
       /* Set a process group ID? */
       PRE_MEM_WRITE( "ioctl(TIOCGPGRP)", ARG3, sizeof(vki_pid_t) );
       break;
-   case VKI_TIOCSCTTY:
-      /* Just takes an int value.  */
-      break;
    case VKI_FIONBIO:
       PRE_MEM_READ( "ioctl(FIONBIO)",    ARG3, sizeof(int) );
       break;
@@ -846,7 +857,6 @@ PRE(ioctl)
       PRE_MEM_WRITE( "ioctl(FIONREAD)", ARG3, sizeof(int) );
       break;
 
-   case VKI_DTRACEHIOC_REMOVE: 
    case VKI_DTRACEHIOC_ADDDOF: 
        break;
 
@@ -866,9 +876,6 @@ PRE(ioctl)
    case VKI_TIOCPTYGNAME:
        PRE_MEM_WRITE( "ioctl(TIOCPTYGNAME)", ARG3, 128 );
        break;
-   case VKI_TIOCPTYGRANT:
-   case VKI_TIOCPTYUNLK:
-       break;
 
    default: 
       ML_(PRE_unknown_ioctl)(tid, ARG2, ARG3);