[Qemu-devel][PATCH] CD-ROM read-only fix for win32

["Kazu" <kazoo@r3.dion.ne.jp>]

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Hi,

When a file has a read-only attribute for its property, the program doesn't
boot. An attached patch fixes it. For example,  read-only CD-ROM file can be
used.

It also fixes the problem that restricted user can't access host's CD-ROM
drive.

Thanks,
Kazu

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Index: block-raw.c
===================================================================
RCS file: /sources/qemu/qemu/block-raw.c,v
retrieving revision 1.16
diff -u -r1.16 block-raw.c
--- block-raw.c	7 Jan 2007 22:43:30 -0000	1.16
+++ block-raw.c	14 Jan 2007 05:07:17 -0000
@@ -914,8 +914,13 @@
     s->hfile = CreateFile(filename, access_flags, 
                           FILE_SHARE_READ, NULL,
                           create_flags, overlapped, NULL);
-    if (s->hfile == INVALID_HANDLE_VALUE) 
+    if (s->hfile == INVALID_HANDLE_VALUE) {
+        int err = GetLastError();
+
+        if (err == ERROR_ACCESS_DENIED)
+            return -EACCES;
         return -1;
+    }
     return 0;
 }
 
@@ -1278,8 +1283,13 @@
     s->hfile = CreateFile(filename, access_flags, 
                           FILE_SHARE_READ, NULL,
                           create_flags, overlapped, NULL);
-    if (s->hfile == INVALID_HANDLE_VALUE) 
+    if (s->hfile == INVALID_HANDLE_VALUE) {
+        int err = GetLastError();
+
+        if (err == ERROR_ACCESS_DENIED)
+            return -EACCES;
         return -1;
+    }
     return 0;
 }