add DIAGNOSTIC to verify presence of uip_procp pointer in uiomove

SCCS-vsn: sys/kern/kern_subr.c 7.7

diff --git a/usr/src/sys/kern/kern_subr.c b/usr/src/sys/kern/kern_subr.c
index a4e39f9..9980444 100644 (file)
--- a/usr/src/sys/kern/kern_subr.c
+++ b/usr/src/sys/kern/kern_subr.c
@@ -4,11 +4,12 @@
  *
  * %sccs.include.redist.c%
  *
  *
  * %sccs.include.redist.c%
  *

- *     @(#)kern_subr.c 7.6 (Berkeley) %G%
+ *     @(#)kern_subr.c 7.7 (Berkeley) %G%

  */
 
 #include "param.h"
 #include "systm.h"
  */
 
 #include "param.h"
 #include "systm.h"

+#include "proc.h"

 
 uiomove(cp, n, uio)
        register caddr_t cp;
 
 uiomove(cp, n, uio)
        register caddr_t cp;


@@ -19,8 +20,13 @@ uiomove(cp, n, uio)
        u_int cnt;
        int error = 0;
 
        u_int cnt;
        int error = 0;
 

+
+#ifdef DIAGNOSTIC

        if (uio->uio_rw != UIO_READ && uio->uio_rw != UIO_WRITE)
                panic("uiomove: mode");
        if (uio->uio_rw != UIO_READ && uio->uio_rw != UIO_WRITE)
                panic("uiomove: mode");

+       if (uio->uio_segflg == UIO_USERSPACE && uio->uio_procp != curproc)
+               panic("uiomove proc");
+#endif

        while (n > 0 && uio->uio_resid) {
                iov = uio->uio_iov;
                cnt = iov->iov_len;
        while (n > 0 && uio->uio_resid) {
                iov = uio->uio_iov;
                cnt = iov->iov_len;