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[Xen-changelog] [xen-unstable] tools/xenconsole: fix Segmentation fault



# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1265619003 0
# Node ID 5e49312fcb4465ec6715e204b6a50b0f06abf1c2
# Parent  12fc55dffb6bbd78864092eed705cec8192ed461
tools/xenconsole: fix Segmentation fault

Segmentation fault occurs if DOMID isn't specified.
Some check be added to output error message in this situation.

Signed-off-by: Yu Zhiguo <yuzg@xxxxxxxxxxxxxx>
---
 tools/console/client/main.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletion(-)

diff -r 12fc55dffb6b -r 5e49312fcb44 tools/console/client/main.c
--- a/tools/console/client/main.c       Mon Feb 08 08:49:19 2010 +0000
+++ b/tools/console/client/main.c       Mon Feb 08 08:50:03 2010 +0000
@@ -287,7 +287,13 @@ int main(int argc, char **argv)
                        exit(EINVAL);
                }
        }
-       
+
+       if (optind >= argc) {
+               fprintf(stderr, "DOMID should be specified\n");
+               fprintf(stderr, "Try `%s --help' for more information.\n",
+                       argv[0]);
+               exit(EINVAL);
+       }
        domid = strtol(argv[optind], &end, 10);
        if (end && *end) {
                fprintf(stderr, "Invalid DOMID `%s'\n", argv[optind]);

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