Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 98 insertions, 0 deletions

diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c
new file mode 100644
index 000000000000..31bcb2f997d4
--- /dev/null
+++ b/arch/um/sys-i386/ldt.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include "linux/config.h"
+#include "linux/slab.h"
+#include "asm/uaccess.h"
+#include "asm/ptrace.h"
+#include "choose-mode.h"
+#include "kern.h"
+
+#ifdef CONFIG_MODE_TT
+extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
+
+/* XXX this needs copy_to_user and copy_from_user */
+
+int sys_modify_ldt_tt(int func, void __user *ptr, unsigned long bytecount)
+{
+        if (!access_ok(VERIFY_READ, ptr, bytecount))
+                return -EFAULT;
+
+        return modify_ldt(func, ptr, bytecount);
+}
+#endif
+
+#ifdef CONFIG_MODE_SKAS
+extern int userspace_pid;
+
+#include "skas_ptrace.h"
+
+int sys_modify_ldt_skas(int func, void __user *ptr, unsigned long bytecount)
+{
+        struct ptrace_ldt ldt;
+        void *buf;
+        int res, n;
+
+        buf = kmalloc(bytecount, GFP_KERNEL);
+        if(buf == NULL)
+                return(-ENOMEM);
+
+        res = 0;
+
+        switch(func){
+        case 1:
+        case 0x11:
+                res = copy_from_user(buf, ptr, bytecount);
+                break;
+        }
+
+        if(res != 0){
+                res = -EFAULT;
+                goto out;
+        }
+
+        ldt = ((struct ptrace_ldt) { .func      = func,
+                                     .ptr       = buf,
+                                     .bytecount = bytecount });
+        res = ptrace(PTRACE_LDT, userspace_pid, 0, (unsigned long) &ldt);
+        if(res < 0)
+                goto out;
+
+        switch(func){
+        case 0:
+        case 2:
+                n = res;
+                res = copy_to_user(ptr, buf, n);
+                if(res != 0)
+                        res = -EFAULT;
+                else 
+                        res = n;
+                break;
+        }
+
+ out:
+        kfree(buf);
+        return(res);
+}
+#endif
+
+int sys_modify_ldt(int func, void __user *ptr, unsigned long bytecount)
+{
+        return(CHOOSE_MODE_PROC(sys_modify_ldt_tt, sys_modify_ldt_skas, func, 
+                                ptr, bytecount));
+}
+
+
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */