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-rw-r--r--iptables/ip6tables-save.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/iptables/ip6tables-save.c b/iptables/ip6tables-save.c
index f35e921e..053413a9 100644
--- a/iptables/ip6tables-save.c
+++ b/iptables/ip6tables-save.c
@@ -35,10 +35,16 @@ static int for_each_table(int (*func)(const char *tablename))
int ret = 1;
FILE *procfile = NULL;
char tablename[XT_TABLE_MAXNAMELEN+1];
-
- procfile = fopen("/proc/net/ip6_tables_names", "re");
- if (!procfile)
- return ret;
+ static const char filename[] = "/proc/net/ip6_tables_names";
+
+ procfile = fopen(filename, "re");
+ if (!procfile) {
+ if (errno == ENOENT)
+ return ret;
+ fprintf(stderr, "Failed to list table names in %s: %s\n",
+ filename, strerror(errno));
+ exit(1);
+ }
while (fgets(tablename, sizeof(tablename), procfile)) {
if (tablename[strlen(tablename) - 1] != '\n')