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authorPablo Neira Ayuso <pablo@netfilter.org>2012-08-13 11:41:57 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2012-08-13 11:41:57 +0200
commit72d2eacd06d9783122c75b0e6ba238d4b82340be (patch)
tree439bfc8b36313dc75f969db32406056dc0b67d4f /utils
parent01db81597502c6016888411983db33b7718ca810 (diff)
utils: iftest: check return value of nlif_query
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'utils')
-rw-r--r--utils/iftest.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/utils/iftest.c b/utils/iftest.c
index 63cf163..a8117fa 100644
--- a/utils/iftest.c
+++ b/utils/iftest.c
@@ -2,6 +2,7 @@
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <errno.h>
#include <net/if.h>
@@ -25,7 +26,11 @@ int main(int argc, char *argv[])
exit(EXIT_FAILURE);
}
- nlif_query(h);
+ if (nlif_query(h) == -1) {
+ fprintf(stderr, "failed query to retrieve interfaces: %s\n",
+ strerror(errno));
+ exit(EXIT_FAILURE);
+ }
idx = if_nametoindex(argv[1]);