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Don't create a useless inotify file desrcriptor when --port=0

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If there are no dynamic configuration directories configured with
dhcp-hostsdir, dhcp-optsdir and hostsdir then we need to use inotify
only to track changes to resolv-files, but we don't need to do
that when DNS is disabled (port=0) or no resolv-files are configured.

It turns out that inotify slots can be a scarce resource, so not
using one when it's not needed is a Goood Thing.

Patch by HL, description above from SRK.
This commit is contained in:
Heikki Linnakangas
2024-02-07 14:44:49 +00:00
committed by Simon Kelley
parent 6d35601da4
commit 762a3f2430
2 changed files with 3 additions and 3 deletions
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2
src/inotify.c
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@@ -94,7 +94,7 @@ void inotify_dnsmasq_init()
if (daemon->inotifyfd == -1)
die(_("failed to create inotify: %s"), NULL, EC_MISC);
if (option_bool(OPT_NO_RESOLV))
if (daemon->port == 0 || option_bool(OPT_NO_RESOLV))
return;
for (res = daemon->resolv_files; res; res = res->next)