When 'if -a' runs into an failure on an interface all further
interfaces won't be correctly updated in ifstate. This patch
inserts a new variable that only tracks the current interfaces
failure so that the write to ifstate can rely on this and not
the one for the functions return value.

Fixes https://bugs.busybox.net/show_bug.cgi?id=6212

Signed-off-by: Frank Bergmann <[email protected]>
---
 networking/ifupdown.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index daabeec..9f25003 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -1239,6 +1239,7 @@ int ifupdown_main(int argc UNUSED_PARAM, char **argv)
                char *pch;
                bool okay = 0;
                int cmds_ret;
+               bool curr_failure = 0;
 
                iface = xstrdup(target_list->data);
                target_list = target_list->link;
@@ -1306,9 +1307,9 @@ int ifupdown_main(int argc UNUSED_PARAM, char **argv)
                                if (cmds_ret == -1) {
                                        bb_error_msg("don't seem to have all 
the variables for %s/%s",
                                                        liface, 
currif->address_family->name);
-                                       any_failures = 1;
+                                       any_failures = curr_failure = 1;
                                } else if (cmds_ret == 0) {
-                                       any_failures = 1;
+                                       any_failures = curr_failure = 1;
                                }
 
                                currif->iface = oldiface;
@@ -1329,7 +1330,7 @@ int ifupdown_main(int argc UNUSED_PARAM, char **argv)
                        llist_t *state_list = read_iface_state();
                        llist_t *iface_state = find_iface_state(state_list, 
iface);
 
-                       if (cmds == iface_up && !any_failures) {
+                       if (cmds == iface_up && !curr_failure) {
                                char *newiface = xasprintf("%s=%s", iface, 
liface);
                                if (!iface_state) {
                                        llist_add_to_end(&state_list, newiface);
-- 
1.9.1

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