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Date: Fri, 12 Aug 2011 16:23:24 +1000 From: Alex Dubov <oakad@...oo.com> To: Stephen Hemminger <shemminger@...ux-foundation.org> Cc: netdev@...r.kernel.org Subject: iproute2: make arpd daemon write pid file on fork Current version of arpd included with iproute2-2.6.37 will fork unconditionally on start-up (using daemon() library call). This causes problems with distro start-up scripts, as PID of the started daemon can not be reliably obtained, hampering orderly daemon shutdown process. The included patch makes arpd write it's own pid file after fork, in a common LSB fashion, so as to better inter-operate with start up scripts. Removal of stale pid files is handled elsewhere. --- misc/arpd.c.orig 2011-01-08 04:54:30.000000000 +1100 +++ misc/arpd.c 2011-08-12 16:04:51.098754397 +1000 @@ -41,6 +41,7 @@ DB *dbase; char *dbname = "/var/lib/arpd/arpd.db"; +char *pidfname = "/var/run/arpd.pid"; int ifnum; int *ifvec; @@ -780,6 +781,17 @@ goto do_abort; } + do { + FILE *fp = fopen(pidfname, "w"); + if (fp) { + fprintf(fp, "%ld\n", (long)getpid()); + fclose(fp); + } else { + perror("arpd: pid fopen"); + goto do_abort; + } + } while (0); + openlog("arpd", LOG_PID | LOG_CONS, LOG_DAEMON); catch_signal(SIGINT, sig_exit); catch_signal(SIGTERM, sig_exit); -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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