Print zig version on startup

Author: jmbaur

flake.lock

@@ -68,12 +68,12 @@ pub fn logFn(
     mutex.lock();
     defer mutex.unlock();
 
-    stream.reset();
-
     stream.writer().print(
-        "<" ++ syslog_prefix ++ ">" ++ LOG_PREFIX ++ ": " ++ format ++ "\n",
+        "<" ++ syslog_prefix ++ ">" ++ LOG_PREFIX ++ ": " ++ format,
         args,
     ) catch {};
 
-    file.writeAll(log_buf[0..stream.pos]) catch {};
+    file.writeAll(stream.getWritten()) catch {};
+
+    stream.reset();
 }

src/log.zig

@@ -1,6 +1,7 @@
 const std = @import("std");
 const posix = std.posix;
 const epoll_event = std.os.linux.epoll_event;
+const builtin = @import("builtin");
 
 const linux_headers = @import("linux_headers");
 
@@ -324,6 +325,7 @@ pub fn main() !void {
         defer device_watch_thread.join();
 
         std.log.info("tinyboot started", .{});
+        std.log.debug("built with zig version {s}", .{builtin.zig_version_string});
 
         try security.initializeSecurity(arena.allocator());