logging: Add quiet option

Mostly for debug?
Sometimes logging changes timing.

src/nvt_log.c

@@ -15,6 +15,8 @@
 
 char            log_level = 0;
 
+static char     log_threshold = LOG_DEBUG;
+
 static FILE    *log_dest = NULL;
 
 void nvt_log_dest(int dest)
@@ -34,8 +36,10 @@ void nvt_log_dest(int dest)
     }
 }
 
-void nvt_log_level(int level)
+void nvt_log_level(int quiet, int level)
 {
+    if (quiet)
+        log_threshold = LOG_NOTICE;
     log_level = level;
 }
 
@@ -63,6 +67,9 @@ void nvt_log(int prio, const char *fmt, ...)
     const char     *eol;
     int             len;
 
+    if (prio > log_threshold)
+        return;
+
     va_start(arg, fmt);
     len = vsnprintf(buf, sizeof(buf), fmt, arg);
 

src/nvt_log.h

@@ -10,7 +10,7 @@
 #define _PRF2_ _PRF_N_(2)
 
 void            nvt_log_dest(int dest);
-void            nvt_log_level(int level);
+void            nvt_log_level(int quiet, int level);
 _PRF2_ void     nvt_log(int prio, const char *fmt, ...);
 void            nvt_log_buf(int prio, const char *txt,
                             const void *ptr, unsigned int len);

src/ttynvt.c

@@ -42,7 +42,8 @@ static struct ttynvt_param {
     unsigned int    major;
     unsigned int    minor;
     const char     *dev_name;
-    char           *server;
+    const char     *server;
+    unsigned int    quiet;
     unsigned int    debug;
     int             logstd;
     /* Derived */
@@ -525,7 +526,7 @@ static void ttynvt_open(fuse_req_t req, struct fuse_file_info *info)
     return;
 
   open_err:
-    nvt_log(LOG_INFO, "Connection to server: %s:%d failed: %m\n",
+    nvt_log(LOG_ERR, "Connection to server: %s:%d failed: %m\n",
             ttynvt_param.host, ttynvt_param.port);
 
     for (n = 0; n < 3; n++)
@@ -1139,6 +1140,7 @@ static const struct fuse_opt ttynvt_opts[] = {
     TTYNET_OPT("--min=%u", minor, 1),
     TTYNET_OPT("-n %s", dev_name, 0),
     TTYNET_OPT("--name=%s", dev_name, 0),
+    TTYNET_OPT("-q", quiet, 1),
     TTYNET_OPT("-S %s", server, 0),
     TTYNET_OPT("--server=%s", server, 0),
     FUSE_OPT_KEY("-h", 0),
@@ -1157,6 +1159,7 @@ static void print_help(void)
             "\t-m minor, --min=minor\n"
             "\t-n name, --name=name (default: ttyNVT0)\n"
             "\t\tDevice will be created in /dev/$name.\n"
+            "\t-q\t\tBe quiet (suppress informational messages)\n"
             "\t-S server, --server=host:port\n");
 }
 
@@ -1192,7 +1195,7 @@ int main(int argc, char *argv[])
         return 1;
     }
 
-    nvt_log_level(ttynvt_param.debug);
+    nvt_log_level(ttynvt_param.quiet, ttynvt_param.debug);
     if (ttynvt_param.logstd)
         nvt_log_dest(NVT_LOG_STDOUT);