If the file exists but could not be loaded, print the dlerror().
Often it is a missing symbol.
Signed-off-by: Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx>
---
xtables.c | 10 ++++++++++
1 file changed, 10 insertions(+)
Index: iptables-modules/xtables.c
===================================================================
--- iptables-modules.orig/xtables.c
+++ iptables-modules/xtables.c
@@ -309,6 +309,7 @@ struct xtables_match *find_match(const c
{
struct xtables_match *ptr;
const char *icmp6 = "icmp6";
+ struct stat sb;
/* This is ugly as hell. Nonetheless, there is no way of changing
* this without hurting backwards compatibility */
@@ -347,12 +348,16 @@ struct xtables_match *find_match(const c
/* Found library. If it didn't register itself,
maybe they specified target as match. */
ptr = find_match(name, DONT_LOAD, NULL);
+ else if (stat(path, &sb) == 0)
+ fprintf(stderr, "%s: %s\n", path, dlerror());
if (ptr == NULL) {
sprintf(path, "%s/%s%s.so", lib_dir, afinfo.libprefix,
name);
if (dlopen(path, RTLD_NOW) != NULL)
ptr = find_match(name, DONT_LOAD, NULL);
+ else if (stat(path, &sb) == 0)
+ fprintf(stderr, "%s: %s\n", path, dlerror());
}
if (ptr == NULL && tryload == LOAD_MUST_SUCCEED)
@@ -396,6 +401,7 @@ struct xtables_match *find_match(const c
struct xtables_target *find_target(const char *name, enum xt_tryload tryload)
{
struct xtables_target *ptr;
+ struct stat sb;
/* Standard target? */
if (strcmp(name, "") == 0
@@ -420,12 +426,16 @@ struct xtables_target *find_target(const
/* Found library. If it didn't register itself,
maybe they specified match as a target. */
ptr = find_target(name, DONT_LOAD);
+ else if (stat(path, &sb) == 0)
+ fprintf(stderr, "%s: %s\n", path, dlerror());
if (ptr == NULL) {
sprintf(path, "%s/%s%s.so", lib_dir, afinfo.libprefix,
name);
if (dlopen(path, RTLD_NOW) != NULL)
ptr = find_target(name, DONT_LOAD);
+ else if (stat(path, &sb) == 0)
+ fprintf(stderr, "%s: %s\n", path, dlerror());
}
if (ptr == NULL && tryload == LOAD_MUST_SUCCEED)
exit_error(PARAMETER_PROBLEM,
-
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