[Xen-changelog] [xen-unstable] libxl: Clear file object on successful munmap()

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxxxx>
# Date 1297972340 0
# Node ID 5a4710640f815db6609cc41f902752f28c1d06ab
# Parent  54b0749d9f4655508b1679de4bb2841c8a1aa512
libxl: Clear file object on successful munmap()

Clear members of libxl_file_reference when file is successfully unmapped.

Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxxxx>
Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Committed-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---
 tools/libxl/libxl_internal.c |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

diff -r 54b0749d9f46 -r 5a4710640f81 tools/libxl/libxl_internal.c
--- a/tools/libxl/libxl_internal.c      Thu Feb 17 19:50:44 2011 +0000
+++ b/tools/libxl/libxl_internal.c      Thu Feb 17 19:52:20 2011 +0000
@@ -233,6 +233,12 @@ int libxl__file_reference_unmap(libxl_fi
                return 0;
 
        ret = munmap(f->data, f->size);
-
-       return ret == 0 ? 0 : ERROR_FAIL;
-}
+       if (ret == 0) {
+               f->mapped = 0;
+               f->data = NULL;
+               f->size = 0;
+               return 0;
+       }
+
+       return ERROR_FAIL;
+}

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