1 files changed, 0 insertions, 146 deletions
diff --git a/arch/ia64/ia32/ia32_ldt.c b/arch/ia64/ia32/ia32_ldt.c
deleted file mode 100644
index 16d51c146849..000000000000
--- a/arch/ia64/ia32/ia32_ldt.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
- * Copyright (C) 2001, 2004 Hewlett-Packard Co
- *	David Mosberger-Tang <davidm@hpl.hp.com>
- *
- * Adapted from arch/i386/kernel/ldt.c
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/vmalloc.h>
-
-#include <asm/uaccess.h>
-
-#include "ia32priv.h"
-
-/*
- * read_ldt() is not really atomic - this is not a problem since synchronization of reads
- * and writes done to the LDT has to be assured by user-space anyway. Writes are atomic,
- * to protect the security checks done on new descriptors.
- */
-static int
-read_ldt (void __user *ptr, unsigned long bytecount)
-{
-	unsigned long bytes_left, n;
-	char __user *src, *dst;
-	char buf[256];	/* temporary buffer (don't overflow kernel stack!) */
-
-	if (bytecount > IA32_LDT_ENTRIES*IA32_LDT_ENTRY_SIZE)
-		bytecount = IA32_LDT_ENTRIES*IA32_LDT_ENTRY_SIZE;
-
-	bytes_left = bytecount;
-
-	src = (void __user *) IA32_LDT_OFFSET;
-	dst = ptr;
-
-	while (bytes_left) {
-		n = sizeof(buf);
-		if (n > bytes_left)
-			n = bytes_left;
-
-		/*
-		 * We know we're reading valid memory, but we still must guard against
-		 * running out of memory.
-		 */
-		if (__copy_from_user(buf, src, n))
-			return -EFAULT;
-
-		if (copy_to_user(dst, buf, n))
-			return -EFAULT;
-
-		src += n;
-		dst += n;
-		bytes_left -= n;
-	}
-	return bytecount;
-}
-
-static int
-read_default_ldt (void __user * ptr, unsigned long bytecount)
-{
-	unsigned long size;
-	int err;
-
-	/* XXX fix me: should return equivalent of default_ldt[0] */
-	err = 0;
-	size = 8;
-	if (size > bytecount)
-		size = bytecount;
-
-	err = size;
-	if (clear_user(ptr, size))
-		err = -EFAULT;
-
-	return err;
-}
-
-static int
-write_ldt (void __user * ptr, unsigned long bytecount, int oldmode)
-{
-	struct ia32_user_desc ldt_info;
-	__u64 entry;
-	int ret;
-
-	if (bytecount != sizeof(ldt_info))
-		return -EINVAL;
-	if (copy_from_user(&ldt_info, ptr, sizeof(ldt_info)))
-		return -EFAULT;
-
-	if (ldt_info.entry_number >= IA32_LDT_ENTRIES)
-		return -EINVAL;
-	if (ldt_info.contents == 3) {
-		if (oldmode)
-			return -EINVAL;
-		if (ldt_info.seg_not_present == 0)
-			return -EINVAL;
-	}
-
-	if (ldt_info.base_addr == 0 && ldt_info.limit == 0
-	    && (oldmode || (ldt_info.contents == 0 && ldt_info.read_exec_only == 1
-			    && ldt_info.seg_32bit == 0 && ldt_info.limit_in_pages == 0
-			    && ldt_info.seg_not_present == 1 && ldt_info.useable == 0)))
-		/* allow LDTs to be cleared by the user */
-		entry = 0;
-	else
-		/* we must set the "Accessed" bit as IVE doesn't emulate it */
-		entry = IA32_SEG_DESCRIPTOR(ldt_info.base_addr, ldt_info.limit,
-					    (((ldt_info.read_exec_only ^ 1) << 1)
-					     | (ldt_info.contents << 2)) | 1,
-					    1, 3, ldt_info.seg_not_present ^ 1,
-					    (oldmode ? 0 : ldt_info.useable),
-					    ldt_info.seg_32bit,
-					    ldt_info.limit_in_pages);
-	/*
-	 * Install the new entry.  We know we're accessing valid (mapped) user-level
-	 * memory, but we still need to guard against out-of-memory, hence we must use
-	 * put_user().
-	 */
-	ret = __put_user(entry, (__u64 __user *) IA32_LDT_OFFSET + ldt_info.entry_number);
-	ia32_load_segment_descriptors(current);
-	return ret;
-}
-
-asmlinkage int
-sys32_modify_ldt (int func, unsigned int ptr, unsigned int bytecount)
-{
-	int ret = -ENOSYS;
-
-	switch (func) {
-	      case 0:
-		ret = read_ldt(compat_ptr(ptr), bytecount);
-		break;
-	      case 1:
-		ret = write_ldt(compat_ptr(ptr), bytecount, 1);
-		break;
-	      case 2:
-		ret = read_default_ldt(compat_ptr(ptr), bytecount);
-		break;
-	      case 0x11:
-		ret = write_ldt(compat_ptr(ptr), bytecount, 0);
-		break;
-	}
-	return ret;
-}