Changeset 77549 in vbox for trunk/src/VBox/Runtime/r0drv/linux

Timestamp:

Mar 4, 2019 10:00:34 AM (6 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

129154

Message:

linux/vboxsf: Workaround for kernel_read/write calls (get_user_pages fails), fixing issue with sporadic ENOEXEC from execve(). The workaround requires rtR0MemObjLinuxVirtToPage() from memobj-r0drv-linux.c. Various cleanups and adjustments. bugref:9172

Location:

trunk/src/VBox/Runtime/r0drv/linux

Files:

• memobj-r0drv-linux.c (modified) (3 diffs)
• the-linux-kernel.h (modified) (1 diff)

trunk/src/VBox/Runtime/r0drv/linux/memobj-r0drv-linux.c

@@ -39 +39 @@
 #include <iprt/string.h>
 #include "internal/memobj.h"
+#include "internal/iprt.h"
 
 
@@ -895 +896 @@
  * @param   pv      The kernel virtual address.
  */
-static struct page *rtR0MemObjLinuxVirtToPage(void *pv)
+RTDECL(struct page *) rtR0MemObjLinuxVirtToPage(void *pv)
 {
     unsigned long   ulAddr = (unsigned long)pv;
@@ -985 +986 @@
     return pte_page(u.Entry);
 }
+RT_EXPORT_SYMBOL(rtR0MemObjLinuxVirtToPage);
 
 

trunk/src/VBox/Runtime/r0drv/linux/the-linux-kernel.h

@@ -461 +461 @@
 DECLHIDDEN(void) rtR0LnxWorkqueueFlush(void);
 
+/*
+ * Memory hacks from memobj-r0drv-linux.c that shared folders need.
+ */
+RTDECL(struct page *) rtR0MemObjLinuxVirtToPage(void *pv);
+
 
 #endif /* !IPRT_INCLUDED_SRC_r0drv_linux_the_linux_kernel_h */