712ccf3395
- Update of the underlying OpenSSH to 6.4p1
- Update to 6.4p1
Features since 6.2p2:
* ssh-agent(1) support in sshd(8); allows encrypted hostkeys, or
hostkeys on smartcards.
* ssh(1)/sshd(8): allow optional time-based rekeying via a
second argument to the existing RekeyLimit option. RekeyLimit
is now supported in sshd_config as well as on the client.
* sshd(8): standardise logging of information during user
authentication.
* The presented key/cert and the remote username (if available)
is now logged in the authentication success/failure message on
the same log line as the local username, remote host/port and
protocol in use. Certificates contents and the key
fingerprint of the signing CA are logged too.
* ssh(1) ability to query what cryptographic algorithms are
supported in the binary.
* ssh(1): ProxyCommand=- for cases where stdin and stdout
already point to the proxy.
* ssh(1): allow IdentityFile=none
* ssh(1)/sshd(8): -E option to append debugging logs to a
specified file instead of stderr or syslog.
* sftp(1): support resuming partial downloads with the "reget"
command and on the sftp commandline or on the "get"
commandline with the "-a" (append) option.
* ssh(1): "IgnoreUnknown" configuration option to selectively
suppress errors arising from unknown configuration directives.
* sshd(8): support for submethods to be appended to required
authentication methods listed via AuthenticationMethods.
OBS-URL: https://build.opensuse.org/request/show/220466
OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=58
74 lines
2.1 KiB
Diff
74 lines
2.1 KiB
Diff
# block SIGALRM while logging through syslog to prevent deadlocks (through
|
|
# grace_alarm_handler)
|
|
# bnc#57354
|
|
|
|
diff --git a/openssh-6.4p1/log.c b/openssh-6.4p1/log.c
|
|
--- a/openssh-6.4p1/log.c
|
|
+++ b/openssh-6.4p1/log.c
|
|
@@ -47,16 +47,17 @@
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H) && !defined(BROKEN_STRNVIS)
|
|
# include <vis.h>
|
|
#endif
|
|
|
|
#include "xmalloc.h"
|
|
#include "log.h"
|
|
+#include <signal.h>
|
|
|
|
static LogLevel log_level = SYSLOG_LEVEL_INFO;
|
|
static int log_on_stderr = 1;
|
|
static int log_stderr_fd = STDERR_FILENO;
|
|
static int log_facility = LOG_AUTH;
|
|
static char *argv0;
|
|
static log_handler_fn *log_handler;
|
|
static void *log_handler_ctx;
|
|
@@ -384,16 +385,17 @@ do_log(LogLevel level, const char *fmt,
|
|
{
|
|
#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
|
|
struct syslog_data sdata = SYSLOG_DATA_INIT;
|
|
#endif
|
|
char msgbuf[MSGBUFSIZ];
|
|
char fmtbuf[MSGBUFSIZ];
|
|
char *txt = NULL;
|
|
int pri = LOG_INFO;
|
|
+ sigset_t nset, oset;
|
|
int saved_errno = errno;
|
|
log_handler_fn *tmp_handler;
|
|
|
|
if (level > log_level)
|
|
return;
|
|
|
|
switch (level) {
|
|
case SYSLOG_LEVEL_FATAL:
|
|
@@ -442,20 +444,29 @@ do_log(LogLevel level, const char *fmt,
|
|
tmp_handler = log_handler;
|
|
log_handler = NULL;
|
|
tmp_handler(level, fmtbuf, log_handler_ctx);
|
|
log_handler = tmp_handler;
|
|
} else if (log_on_stderr) {
|
|
snprintf(msgbuf, sizeof msgbuf, "%s\r\n", fmtbuf);
|
|
(void)write(log_stderr_fd, msgbuf, strlen(msgbuf));
|
|
} else {
|
|
+ /* Prevent a race between the grace_alarm
|
|
+ * which writes a log message and terminates
|
|
+ * and main sshd code that leads to deadlock
|
|
+ * as syslog is not async safe.
|
|
+ */
|
|
+ sigemptyset(&nset);
|
|
+ sigaddset(&nset, SIGALRM);
|
|
+ sigprocmask(SIG_BLOCK, &nset, &oset);
|
|
#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
|
|
openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
|
|
syslog_r(pri, &sdata, "%.500s", fmtbuf);
|
|
closelog_r(&sdata);
|
|
#else
|
|
openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
|
|
syslog(pri, "%.500s", fmtbuf);
|
|
closelog();
|
|
#endif
|
|
+ sigprocmask(SIG_SETMASK, &oset, NULL);
|
|
}
|
|
errno = saved_errno;
|
|
}
|