log: handle multi-line log messages properly

fixme

@@ -46,8 +46,9 @@
 
    - uuidd    DONE
    - nscd     DONE
+   - dbus     DONE
    - rpcbind (/var/run/rpcbind.sock!)
-   - dbus
+   - avahi-daemon (/var/run/avahi-daemon/socket)
    - rsyslog
    - cups
    - ssh      CLASSIC
@@ -55,7 +56,6 @@
    - apache/samba
    - libvirtd (/var/run/libvirt/libvirt-sock-ro)
    - bluetoothd (/var/run/sdp! @/org/bluez/audio!)
-   - avahi-daemon (/var/run/avahi-daemon/socket)
    - distccd
 
 * teach dbus to talk to systemd when autospawning services
@@ -63,6 +63,8 @@
 * Figure out which signal handlers we actually have to reset in the
   forked off child
 
+* loopback-setup is borked for ipv6
+
 Regularly:
 
 * look for close() vs. close_nointr() vs. close_nointr_nofail()

src/log.c

@@ -312,31 +312,49 @@ static int log_dispatch(
         const char*file,
         int line,
         const char *func,
-        const char *buffer) {
+        char *buffer) {
 
-        int r;
+        int r = 0;
 
-        if (log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
+        do {
-            log_target == LOG_TARGET_SYSLOG) {
+                char *e;
+                int k;
 
-                if ((r = write_to_syslog(level, file, line, func, buffer)) < 0) {
+                buffer += strspn(buffer, NEWLINE);
-                        log_close_syslog();
-                        log_open_kmsg();
-                } else if (r > 0)
-                        return r;
-        }
 
-        if (log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
+                if (buffer[0] == 0)
-            log_target == LOG_TARGET_KMSG) {
+                        break;
 
-                if ((r = write_to_kmsg(level, file, line, func, buffer)) < 0) {
+                if ((e = strpbrk(buffer, NEWLINE)))
-                        log_close_kmsg();
+                        *(e++) = 0;
-                        log_open_console();
-                } else if (r > 0)
-                        return r;
-        }
 
-        return write_to_console(level, file, line, func, buffer);
+                if (log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
+                    log_target == LOG_TARGET_SYSLOG) {
+
+                        if ((r = write_to_syslog(level, file, line, func, buffer)) < 0) {
+                                log_close_syslog();
+                                log_open_kmsg();
+                        } else if (r > 0)
+                                r++;
+                }
+
+                if (log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
+                    log_target == LOG_TARGET_KMSG) {
+
+                        if ((r = write_to_kmsg(level, file, line, func, buffer)) < 0) {
+                                log_close_kmsg();
+                                log_open_console();
+                        } else if (r > 0)
+                                r++;
+                }
+
+                if ((k = write_to_console(level, file, line, func, buffer)) < 0)
+                        return k;
+
+                buffer = e;
+        } while (buffer);
+
+        return r;
 }
 
 int log_meta(