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| author | Attilio Rao <attilio@FreeBSD.org> | 2009-11-25 15:12:24 +0000 |
|---|---|---|
| committer | Attilio Rao <attilio@FreeBSD.org> | 2009-11-25 15:12:24 +0000 |
| commit | 7a7043c787b61d6bf02733a04ade1947fc4ded2b (patch) | |
| tree | f308da7e1d86252ddb2bfef1aafa5f589034f693 /crypto/openssh/sshd.c | |
| parent | d72dc9a7ebe0cd99bc5e2c56980ec0abcedd7465 (diff) | |
| download | src-7a7043c787b61d6bf02733a04ade1947fc4ded2b.tar.gz src-7a7043c787b61d6bf02733a04ade1947fc4ded2b.zip | |
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
Notes
Notes:
svn path=/head/; revision=199804
Diffstat (limited to 'crypto/openssh/sshd.c')
| -rw-r--r-- | crypto/openssh/sshd.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/crypto/openssh/sshd.c b/crypto/openssh/sshd.c index 249e20f355c5..422f0cb17a7e 100644 --- a/crypto/openssh/sshd.c +++ b/crypto/openssh/sshd.c @@ -47,6 +47,7 @@ __RCSID("$FreeBSD$"); #include <sys/types.h> #include <sys/ioctl.h> +#include <sys/mman.h> #include <sys/socket.h> #ifdef HAVE_SYS_STAT_H # include <sys/stat.h> @@ -1293,6 +1294,10 @@ main(int ac, char **av) /* Initialize configuration options to their default values. */ initialize_server_options(&options); + /* Avoid killing the process in high-pressure swapping environments. */ + if (madvise(NULL, 0, MADV_PROTECT) != 0) + debug("madvise(): %.200s", strerror(errno)); + /* Parse command-line arguments. */ while ((opt = getopt(ac, av, "f:p:b:k:h:g:u:o:C:dDeiqrtQRT46")) != -1) { switch (opt) { |