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Ensure that the channel doesn't disappear in agent_logoff(). If it does, it

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could cause a crash.
(fixes the crash reported in BE-396)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@104086 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2008-02-25 18:38:10 +00:00
parent 9b32204204
commit c27732c38c
1 changed files with 21 additions and 2 deletions
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23
channels/chan_agent.c
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@@ -1581,10 +1581,29 @@ static int agent_logoff(const char *agent, int soft)
ret = 0;
if (p->owner || p->chan) {
if (!soft) {
if (p->owner)
ast_mutex_lock(&p->lock);
while (p->owner && ast_channel_trylock(p->owner)) {
ast_mutex_unlock(&p->lock);
usleep(1);
ast_mutex_lock(&p->lock);
}
if (p->owner) {
ast_softhangup(p->owner, AST_SOFTHANGUP_EXPLICIT);
if (p->chan)
ast_channel_unlock(p->owner);
}
while (p->chan && ast_channel_trylock(p->chan)) {
ast_mutex_unlock(&p->lock);
usleep(1);
ast_mutex_lock(&p->lock);
}
if (p->chan) {
ast_softhangup(p->chan, AST_SOFTHANGUP_EXPLICIT);
ast_channel_unlock(p->chan);
}
ast_mutex_unlock(&p->lock);
} else
p->deferlogoff = 1;
} else {