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networkd: guard against NULL pointers 

This should never be a problem, but better be safe than sorry.
This commit is contained in:
Tom Gundersen 2014-04-08 21:26:19 +02:00
parent aa6fc9b8c8
commit 7ff8f4b53c
1 changed files with 7 additions and 2 deletions
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9
src/network/networkd-link.c
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@ -1299,6 +1299,7 @@ static int link_getlink_handler(sd_rtnl *rtnl, sd_rtnl_message *m,
int r;
assert(link);
assert(link->ifname);
if (link->state == LINK_STATE_FAILED)
return 1;
@ -1510,11 +1511,16 @@ int link_update(Link *link, sd_rtnl_message *m) {
int link_save(Link *link) {
_cleanup_free_ char *temp_path = NULL;
_cleanup_fclose_ FILE *f = NULL;
const char *state;
int r;
assert(link);
assert(link->state_file);
state = link_state_to_string(link->state);
if (!state)
goto finish;
r = fopen_temporary(link->state_file, &f, &temp_path);
if (r < 0)
goto finish;
@ -1523,8 +1529,7 @@ int link_save(Link *link) {
fprintf(f,
"# This is private data. Do not parse.\n"
"STATE=%s\n",
link_state_to_string(link->state));
"STATE=%s\n", state);
if (link->dhcp_lease) {
_cleanup_free_ char *lease_file = NULL;