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| author | attilio <attilio@FreeBSD.org> | 2009-11-25 15:12:24 +0000 |
|---|---|---|
| committer | attilio <attilio@FreeBSD.org> | 2009-11-25 15:12:24 +0000 |
| commit | 99524169bf3f72fffa8e41ace1a952854e3f97d3 (patch) | |
| tree | f308da7e1d86252ddb2bfef1aafa5f589034f693 /usr.sbin/cron/cron | |
| parent | c984dc56360945b3348330530b2cec41b26e99e5 (diff) | |
| download | FreeBSD-src-99524169bf3f72fffa8e41ace1a952854e3f97d3.zip FreeBSD-src-99524169bf3f72fffa8e41ace1a952854e3f97d3.tar.gz | |
Avoid sshd, cron, syslogd and inetd to be killed under high-pressure swap
environments.
Please note that this can't be done while such processes run in jails.
Note: in future it would be interesting to find a way to do that
selectively for any desired proccess (choosen by user himself), probabilly
via a ptrace interface or whatever.
Obtained from: Sandvine Incorporated
Reviewed by: emaste, arch@
Sponsored by: Sandvine Incorporated
MFC: 1 month
Diffstat (limited to 'usr.sbin/cron/cron')
| -rw-r--r-- | usr.sbin/cron/cron/cron.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/usr.sbin/cron/cron/cron.c b/usr.sbin/cron/cron/cron.c index 101989c..52cdcc8 100644 --- a/usr.sbin/cron/cron/cron.c +++ b/usr.sbin/cron/cron/cron.c @@ -24,6 +24,7 @@ static const char rcsid[] = #include "cron.h" +#include <sys/mman.h> #include <sys/signal.h> #if SYS_TIME_H # include <sys/time.h> @@ -134,6 +135,9 @@ main(argc, argv) } } + if (madvise(NULL, 0, MADV_PROTECT) != 0) + log_it("CRON", getpid(), "WARNING", "madvise() failed"); + pidfile_write(pfh); database.head = NULL; database.tail = NULL; |
