From 0e1fe2007df82725e6ce46d4f92d8bf4434ee887 Mon Sep 17 00:00:00 2001
From: Richard Purdie <richard@openedhand.com>
Date: Thu, 24 Apr 2008 16:54:09 +0000
Subject: qemu: Add two qemu usermode fixes

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@4331 311d38ba-8fff-0310-9ca6-ca027cbcb966
---
 meta/packages/qemu/qemu-0.9.1+svn/fix_brk.patch | 55 +++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 meta/packages/qemu/qemu-0.9.1+svn/fix_brk.patch

(limited to 'meta/packages/qemu/qemu-0.9.1+svn/fix_brk.patch')

diff --git a/meta/packages/qemu/qemu-0.9.1+svn/fix_brk.patch b/meta/packages/qemu/qemu-0.9.1+svn/fix_brk.patch
new file mode 100644
index 000000000..783198d9e
--- /dev/null
+++ b/meta/packages/qemu/qemu-0.9.1+svn/fix_brk.patch
@@ -0,0 +1,55 @@
+--- qemu/linux-user/syscall.c1	(revision 16)
++++ qemu/linux-user/syscall.c	(working copy)
+@@ -441,7 +441,7 @@
+     if (!new_brk)
+         return target_brk;
+     if (new_brk < target_original_brk)
+-        return -TARGET_ENOMEM;
++        return target_brk;
+ 
+     brk_page = HOST_PAGE_ALIGN(target_brk);
+ 
+@@ -456,12 +456,11 @@
+     mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
+                                         PROT_READ|PROT_WRITE,
+                                         MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
+-    if (is_error(mapped_addr)) {
+-	return mapped_addr;
+-    } else {
++
++    if (!is_error(mapped_addr))
+ 	target_brk = new_brk;
+-    	return target_brk;
+-    }
++    
++    return target_brk;
+ }
+ 
+ static inline abi_long copy_from_user_fdset(fd_set *fds,
+--- qemu/linux-user/mmap.c1	(revision 16)
++++ qemu/linux-user/mmap.c	(working copy)
+@@ -260,6 +259,9 @@
+             host_start += offset - host_offset;
+         start = h2g(host_start);
+     } else {
++        int flg;
++        target_ulong addr;
++
+         if (start & ~TARGET_PAGE_MASK) {
+             errno = EINVAL;
+             return -1;
+@@ -267,6 +269,14 @@
+         end = start + len;
+         real_end = HOST_PAGE_ALIGN(end);
+         
++        for(addr = real_start; addr < real_end; addr += TARGET_PAGE_SIZE) {
++            flg = page_get_flags(addr);
++            if( flg & PAGE_RESERVED ) {
++                errno = ENXIO;
++                return -1;
++            }
++        }
++
+         /* worst case: we cannot map the file because the offset is not
+            aligned, so we read it */
+         if (!(flags & MAP_ANONYMOUS) &&
-- 
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