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If the notification message length is 0, ignore the message. #4237

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If the notification message length is 0, ignore the message. #4237

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4 changes: 4 additions & 0 deletions src/core/manager.c
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Expand Up @@ -1721,6 +1721,10 @@ static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t

return -errno;
}
if (n == 0) {
log_debug("Got zero-length notification message. Ignoring.");
return 0;
}

CMSG_FOREACH(cmsg, &msghdr) {
if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
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