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ifupdown: skip interface config/deconfig based on refcounts

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This commit is contained in:
Ariadne Conill 2020-09-08 19:10:20 -06:00
parent 8de83fdd9a
commit efe9b60e37
1 changed files with 28 additions and 0 deletions
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28
cmd/ifupdown.c
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@ -93,6 +93,26 @@ acquire_state_lock(const char *state_path, const char *lifname)
return fd;
}
bool
skip_interface(struct lif_interface *iface, const char *ifname)
{
if (up && iface->refcount > 0)
{
fprintf(stderr, "%s: skipping %s (already configured), use --force to force configuration\n",
argv0, ifname);
return true;
}
if (!up && iface->refcount == 0)
{
fprintf(stderr, "%s: skipping %s (already deconfigured), use --force to force deconfiguration\n",
argv0, ifname);
return true;
}
return false;
}
bool
change_interface(struct lif_interface *iface, struct lif_dict *collection, struct lif_dict *state, const char *ifname)
{
@ -104,6 +124,14 @@ change_interface(struct lif_interface *iface, struct lif_dict *collection, struc
return false;
}
if (skip_interface(iface, ifname))
{
if (lockfd != -1)
close(lockfd);
return true;
}
if (exec_opts.verbose)
{
fprintf(stderr, "%s: changing state of interface %s to '%s'\n",