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MEDIUM: listener: support rebinding during resume()

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When a listener resumes operations, supporting a full rebind makes it
possible to perform a full stop as a pause(). This will be used for
pausing abstract namespace unix sockets.
(cherry picked from commit 1c4b814087189b4b0225a473b7cb0a844bc30839)
This commit is contained in:
Willy Tarreau 2014-07-07 21:06:24 +02:00
parent d903bb345d
commit ff12090bf0
1 changed files with 17 additions and 1 deletions
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18
src/listener.c
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@ -120,10 +120,26 @@ int pause_listener(struct listener *l)
* may replace enable_listener(). The resulting state will either be LI_READY
* or LI_FULL. 0 is returned in case of failure to resume (eg: dead socket).
* Listeners bound to a different process are not woken up unless we're in
* foreground mode.
* foreground mode. If the listener was only in the assigned state, it's totally
* rebound. This can happen if a pause() has completely stopped it. If the
* resume fails, 0 is returned and an error might be displayed.
*/
int resume_listener(struct listener *l)
{
if (l->state == LI_ASSIGNED) {
char msg[100];
int err;
err = l->proto->bind(l, msg, sizeof(msg));
if (err & ERR_ALERT)
Alert("Resuming listener: %s\n", msg);
else if (err & ERR_WARN)
Warning("Resuming listener: %s\n", msg);
if (err & (ERR_FATAL | ERR_ABORT))
return 0;
}
if (l->state < LI_PAUSED)
return 0;