Cherry-pick upstream fix to properly handle multiline syslog messages

Closes: #746351

debian/changelog

@@ -10,6 +10,8 @@ systemd (204-11) UNRELEASED; urgency=medium
 
   [ Michael Biebl ]
   * Make no-patch-numbers the default for gbp-pq.
+  * Cherry-pick upstream fix to properly handle multiline syslog messages.
+    (Closes: #746351)
 
   [ Michael Stapelberg ]
   * Clarify that “systemd” does not influence init whereas “systemd-sysv” does

debian/patches/journal-handle-multiline-syslog-messages.patch

@@ -0,0 +1,75 @@
+From: Harald Hoyer <harald@redhat.com>
+Date: Thu, 1 Aug 2013 12:14:02 +0200
+Subject: journal: handle multiline syslog messages
+MIME-Version: 1.0
+Content-Type: text/plain; charset="utf-8"
+Content-Transfer-Encoding: 8bit
+
+Since the journal can handle multiple lines just well natively,
+and rsyslog can be configured to handle them as well, there is no need
+to truncate messages from syslog() after the first newline.
+
+Reproducer:
+
+1. Add following four lines to /etc/rsyslog.conf
+
+   ----------
+   $EscapeControlCharactersOnReceive off
+   $ActionFileDefaultTemplate RSYSLOG_SysklogdFileFormat
+   $SpaceLFOnReceive on
+   $DropTrailingLFOnReception off
+   ----------
+
+3. Restart rsyslog
+  # service rsyslog restart
+
+4. Compile and run the following program
+
+   ----------
+   #include <stdio.h>
+   #include <syslog.h>
+
+   int main()
+   {
+    syslog(LOG_INFO, "aaa%caaa", '\n');
+    return 0;
+   }
+   ----------
+
+Actual results:
+Below message appears in /var/log/messages.
+
+   ----------
+　　　Sep  7 19:19:39 localhost test2: aaa
+   ----------
+
+Expected results:
+Below message, which worked prior to systemd-journald
+appears in /var/log/messages.
+
+   ----------
+　　　Sep  7 19:19:39 localhost test2: aaa aaa
+
+https://bugzilla.redhat.com/show_bug.cgi?id=855313
+---
+ src/journal/journald-server.c | 7 +------
+ 1 file changed, 1 insertion(+), 6 deletions(-)
+
+diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
+index 01f23ce..5c607b6 100644
+--- a/src/journal/journald-server.c
++++ b/src/journal/journald-server.c
+@@ -1142,12 +1142,7 @@ int process_event(Server *s, struct epoll_event *ev) {
+                                 char *e;
+ 
+                                 if (n > 0 && n_fds == 0) {
+-                                        e = memchr(s->buffer, '\n', n);
+-                                        if (e)
+-                                                *e = 0;
+-                                        else
+-                                                s->buffer[n] = 0;
+-
++                                        s->buffer[n] = 0;
+                                         server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len);
+                                 } else if (n_fds > 0)
+                                         log_warning("Got file descriptors via syslog socket. Ignoring.");

debian/patches/series

@@ -55,3 +55,4 @@ Add-targets-for-compatibility-with-Debian-insserv-sy.patch
 more-cd-aliases.patch
 rules-drivers-always-call-kmod-even-when-a-driver-is.patch
 Advertise-hibernation-only-if-there-s-enough-free-sw.patch
+journal-handle-multiline-syslog-messages.patch