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optimized FD_CLOEXEC on accept socket

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This commit is contained in:
Jan F. Chadima 2010-01-25 18:59:02 +00:00
parent 7451555c05
commit 606b55d024
2 changed files with 22 additions and 16 deletions
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33
openssh-5.1p1-cloexec.patch
View File

@ -1,6 +1,6 @@
diff -up openssh-5.3p1/channels.c.cloexec openssh-5.3p1/channels.c
--- openssh-5.3p1/channels.c.cloexec 2010-01-19 09:26:50.000000000 +0100
+++ openssh-5.3p1/channels.c 2010-01-19 09:26:51.000000000 +0100
--- openssh-5.3p1/channels.c.cloexec 2010-01-25 17:25:58.000000000 +0100
+++ openssh-5.3p1/channels.c 2010-01-25 17:26:01.000000000 +0100
@@ -60,6 +60,7 @@
#include <termios.h>
#include <unistd.h>
@ -29,8 +29,8 @@ diff -up openssh-5.3p1/channels.c.cloexec openssh-5.3p1/channels.c
c->wfd = wfd;
c->sock = (rfd == wfd) ? rfd : -1;
diff -up openssh-5.3p1/sshconnect2.c.cloexec openssh-5.3p1/sshconnect2.c
--- openssh-5.3p1/sshconnect2.c.cloexec 2010-01-19 09:26:50.000000000 +0100
+++ openssh-5.3p1/sshconnect2.c 2010-01-19 09:26:51.000000000 +0100
--- openssh-5.3p1/sshconnect2.c.cloexec 2010-01-25 17:25:58.000000000 +0100
+++ openssh-5.3p1/sshconnect2.c 2010-01-25 17:26:01.000000000 +0100
@@ -39,6 +39,7 @@
#include <stdio.h>
#include <string.h>
@ -49,7 +49,7 @@ diff -up openssh-5.3p1/sshconnect2.c.cloexec openssh-5.3p1/sshconnect2.c
if (dup2(from[1], STDOUT_FILENO) < 0)
diff -up openssh-5.3p1/sshconnect.c.cloexec openssh-5.3p1/sshconnect.c
--- openssh-5.3p1/sshconnect.c.cloexec 2009-06-21 10:53:53.000000000 +0200
+++ openssh-5.3p1/sshconnect.c 2010-01-19 09:26:51.000000000 +0100
+++ openssh-5.3p1/sshconnect.c 2010-01-25 17:26:01.000000000 +0100
@@ -38,6 +38,7 @@
#include <stdlib.h>
#include <string.h>
@ -72,13 +72,16 @@ diff -up openssh-5.3p1/sshconnect.c.cloexec openssh-5.3p1/sshconnect.c
/* Bind the socket to an alternative local IP address */
if (options.bind_address == NULL)
diff -up openssh-5.3p1/sshd.c.cloexec openssh-5.3p1/sshd.c
--- openssh-5.3p1/sshd.c.cloexec 2010-01-19 09:43:45.000000000 +0100
+++ openssh-5.3p1/sshd.c 2010-01-19 09:47:04.000000000 +0100
@@ -1105,6 +1105,7 @@ server_accept_loop(int *sock_in, int *so
error("accept: %.100s", strerror(errno));
continue;
}
+ fcntl(*newsock, F_SETFD, FD_CLOEXEC);
if (unset_nonblock(*newsock) == -1) {
close(*newsock);
continue;
--- openssh-5.3p1/sshd.c.cloexec 2010-01-25 17:25:55.000000000 +0100
+++ openssh-5.3p1/sshd.c 2010-01-25 18:29:23.000000000 +0100
@@ -1756,6 +1756,10 @@ main(int ac, char **av)
sock_in, sock_out, newsock, startup_pipe, config_s[0]);
}
+ /* set fd cloexec on io/sockets to avoid to forward them to childern */
+ fcntl(sock_out, F_SETFD, FD_CLOEXEC);
+ fcntl(sock_in, F_SETFD, FD_CLOEXEC);
+
/*
* Disable the key regeneration alarm. We will not regenerate the
* key since we are no longer in a position to give it to anyone. We

5
openssh.spec
View File

@ -71,7 +71,7 @@ Name: openssh
Version: 5.3p1
# Do not rewind release to 1 on version upgrades unless the pam_ssh_agent_auth
# is updated as well.
Release: 19%{?dist}%{?rescue_rel}
Release: 20%{?dist}%{?rescue_rel}
URL: http://www.openssh.com/portable.html
#URL1: http://pamsshagentauth.sourceforge.net
#Source0: ftp://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-%{version}.tar.gz
@ -525,6 +525,9 @@ fi
%endif
%changelog
* Mon Jan 25 2010 Jan F. Chadima <jchadima@redhat.com> - 5.3p1-20
- optimized FD_CLOEXEC on accept socket (#541809)
* Mon Jan 25 2010 Tomas Mraz <tmraz@redhat.com> - 5.3p1-19
- updated pam_ssh_agent_auth to new version from upstream (just
a licence change)