Pawel Jakub Dawidek <p...@freebsd.org> wrote in <201307032104.r63l4kee015...@svn.freebsd.org>:
pj> Author: pjd pj> Date: Wed Jul 3 21:04:20 2013 pj> New Revision: 252603 pj> URL: http://svnweb.freebsd.org/changeset/base/252603 pj> pj> Log: pj> The whole sending functionality was implemented within signal handler, pj> which is very bad idea. Split sending and receiving in two processes, pj> which fixes this problem and will help to sandbox rwhod. pj> pj> Submitted by: Mariusz Zaborski <osho...@freebsd.org> pj> Sponsored by: Google Summer of Code 2013 pj> Reviewed by: pjd pj> MFC after: 1 month (snip) pj> if (!quiet_mode) { pj> - signal(SIGALRM, onalrm); pj> - onalrm(0); pj> + pid_child_receiver = pdfork(&fdp, 0); pj> + if (pid_child_receiver == 0) { pj> + receiver_process(); pj> + } else if (pid_child_receiver > 0) { pj> + sender_process(); pj> + } else if (pid_child_receiver == -1) { pj> + syslog(LOG_ERR, "pdfork: %m"); pj> + exit(1); pj> + } pdfork() is available only when options PROCDESC is defined and GENERIC does not have it. -- Hiroki
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