udebug-cli: add logdump command

Works like logstream but only dumps existing ring buffer data
without waiting for more.

Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/udebug-cli b/udebug-cli
index 5d657cf2628ac6a3b4689de65e8b036f0797995b..c72981c3b8b4cfb4ff319553d9b72a2a6f308585 100755 (executable)
--- a/udebug-cli
+++ b/udebug-cli
@@ -36,6 +36,7 @@ Usage: ${basename(sourcepath())} [<options>] <command> [<args>]
     get_flags                  Get ring buffer flags
     stream:                    Stream packet data as pcap
     logstream:                 Stream syslog data as text
+    logdump:                   Dump syslog data snapshot as text
 
   Service list: space separated list of services matching the config
     - <name>                   Enable service <name>
@@ -382,6 +383,26 @@ let cmds = {
        logstream: function() {
                stream_data(true);
        },
+       logdump: function() {
+               open_log_out();
+
+               if (!length(selected)) {
+                       _warn(`No available debug buffers\n`);
+                       exit(1);
+               }
+
+               for (let ring in selected) {
+                       if (open_ring(ring) == null) {
+                               _warn(`Failed to open ring ${ring.proc_name}:${ring.ring_name}\n`);
+                               if (opts.force)
+                                       continue;
+
+                               exit(1);
+                       }
+               }
+
+               poll_data();
+       },
        reset: function() {
                exit(0);
        },
@@ -394,7 +415,7 @@ let cmd = shift(ARGV);
 if (!cmds[cmd])
        usage();
 
-if (cmd == "logstream")
+if (cmd == "logstream" || cmd == "logdump")
        opts.log_only = true;
 
 if (cmd == 'reset') {