Make target_mmap always return -1 on failure.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1741 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 12 insertions, 6 deletions

diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index a404ef3b0c..948f2f6b2e 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -183,8 +183,10 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
     }
 #endif
 
-    if (offset & ~TARGET_PAGE_MASK)
-        return -EINVAL;
+    if (offset & ~TARGET_PAGE_MASK) {
+        errno = EINVAL;
+        return -1;
+    }
 
     len = TARGET_PAGE_ALIGN(len);
     if (len == 0)
@@ -232,8 +234,10 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
         }
     }
     
-    if (start & ~TARGET_PAGE_MASK)
-        return -EINVAL;
+    if (start & ~TARGET_PAGE_MASK) {
+        errno = EINVAL;
+        return -1;
+    }
     end = start + len;
     host_end = HOST_PAGE_ALIGN(end);
 
@@ -244,8 +248,10 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
         /* msync() won't work here, so we return an error if write is
            possible while it is a shared mapping */
         if ((flags & MAP_TYPE) == MAP_SHARED &&
-            (prot & PROT_WRITE))
-            return -EINVAL;
+            (prot & PROT_WRITE)) {
+            errno = EINVAL;
+            return -1;
+        }
         retaddr = target_mmap(start, len, prot | PROT_WRITE, 
                               MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, 
                               -1, 0);