From 97df5861b690300d5d98689c66fe0c676ca4d8bd Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sat, 2 Aug 2025 01:39:22 -0400
Subject: kernel: dmi: Add '/ctl/dmi/board' ctl entry

Add ctlfs entry for DMI to allow for easy system information from
userspace by reading '/ctl/dmi/*'. This commit implements a ctlfs
node that reports information about the host board.

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/dev/dmi/dmi.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'sys/dev/dmi/dmi.c')

diff --git a/sys/dev/dmi/dmi.c b/sys/dev/dmi/dmi.c
index f9750c1..73a9ab7 100644
--- a/sys/dev/dmi/dmi.c
+++ b/sys/dev/dmi/dmi.c
@@ -35,7 +35,9 @@
 #include <sys/cdefs.h>
 #include <sys/syslog.h>
 #include <dev/dmi/dmi.h>
+#include <dev/dmi/dmivar.h>
 #include <dev/acpi/tables.h>
+#include <fs/ctlfs.h>
 #include <string.h>
 
 #define DMI_BIOS_INFO       0
@@ -236,6 +238,20 @@ dmi_cpu_version(void)
     return dmi_str_index(hdr, PROCINFO_VERSION);
 }
 
+static void
+dmi_init_ctl(void)
+{
+    struct ctlfs_dev ctl;
+    char ctlname[] = "dmi";
+
+    /* Create '/ctl/dmi/board' */
+    ctl.mode = 0444;
+    ctlfs_create_node(ctlname, &ctl);
+    ctl.devname = ctlname;
+    ctl.ops = &g_ctl_board_ident;
+    ctlfs_create_entry("board", &ctl);
+}
+
 static int
 dmi_init(void)
 {
@@ -283,6 +299,7 @@ dmi_init(void)
         hdr = PTR_OFFSET(hdr, cur_nbytes);
     }
 
+    dmi_init_ctl();
     return 0;
 }
 
-- 
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