[Xen-devel] [PATCH v2] tools/libxl: close the logfile_w and null file descriptors in libxl__spawn_qdisk_backend() error path

[Koushik Chakravarty]

Signed-off-by: Koushik Chakravarty <koushik.chakrava...@citrix.com>
CC: Ian Jackson <ian.jack...@eu.citrix.com>
CC: Stefano Stabellini <stefano.stabell...@eu.citrix.com>
CC: Ian Campbell <ian.campb...@citrix.com>
CC: Wei Liu <wei.l...@citrix.com>
---
 tools/libxl/libxl_dm.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index cb006df..2678be2 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -1508,7 +1508,7 @@ void libxl__spawn_qdisk_backend(libxl__egc *egc, 
libxl__dm_spawn_state *dmss)
     flexarray_t *dm_args;
     char **args;
     const char *dm;
-    int logfile_w, null, rc;
+    int logfile_w, null = -1, rc;
     uint32_t domid = dmss->guest_domid;
 
     /* Always use qemu-xen as device model */
@@ -1534,6 +1534,10 @@ void libxl__spawn_qdisk_backend(libxl__egc *egc, 
libxl__dm_spawn_state *dmss)
         goto error;
     }
     null = open("/dev/null", O_RDONLY);
+    if (null < 0) {
+       rc = ERROR_FAIL;
+       goto error;
+    }
 
     dmss->guest_config = NULL;
     /*
@@ -1568,6 +1572,8 @@ void libxl__spawn_qdisk_backend(libxl__egc *egc, 
libxl__dm_spawn_state *dmss)
 
 error:
     assert(rc);
+    if (logfile_w >= 0) close(logfile_w);
+    if (null >= 0) close(null);
     dmss->callback(egc, dmss, rc);
     return;
 }
-- 
1.7.10.4


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