added misc driver log output

Signed-off-by: Jolan Rathelot <jrathelo@student.42nice.fr>

.idea/workspace.xml

@@ -16,9 +16,7 @@
     <configurations />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="2686ebbf-1c6c-4484-bb57-dec59a208d53" name="Changes" comment="">
+    <list default="true" id="2686ebbf-1c6c-4484-bb57-dec59a208d53" name="Changes" comment="" />
-      <change beforePath="$PROJECT_DIR$/99-Hotload-Keyboard.rules" beforeDir="false" afterPath="$PROJECT_DIR$/99-Hotload-Keyboard.rules" afterDir="false" />
-    </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
     <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
@@ -102,7 +100,7 @@
       <window_info anchor="bottom" id="CMake" weight="0.22384511" />
       <window_info anchor="bottom" id="Database Changes" />
       <window_info anchor="bottom" id="TypeScript" />
-      <window_info anchor="bottom" id="Build" weight="0.32982337" />
+      <window_info anchor="bottom" id="Build" weight="0.26324728" />
       <window_info anchor="bottom" id="Python Packages" />
       <window_info anchor="bottom" id="TODO" />
       <window_info anchor="bottom" id="File Transfer" />
@@ -154,6 +152,7 @@
       <workItem from="1710410667925" duration="2000" />
       <workItem from="1710410734122" duration="3818000" />
       <workItem from="1710428742857" duration="5381000" />
+      <workItem from="1710488169055" duration="12511000" />
     </task>
     <task id="LOCAL-00001" summary="Removed Rust code, added misc device and irq handle. Began work on correctly formatting print msg and logging files.">
       <option name="closed" value="true" />
@@ -169,6 +168,9 @@
   <component name="TypeScriptGeneratedFilesManager">
     <option name="version" value="3" />
   </component>
+  <component name="UnknownFeatures">
+    <option featureType="com.intellij.fileTypeFactory" implementationName="*.rules" />
+  </component>
   <component name="VCPKGProject">
     <isAutomaticEditVcpkgJson value="false" />
     <isAutomaticCheckingOnLaunch value="false" />

src/misc_device_fops.c

@@ -4,9 +4,6 @@
 
 #include "drivers_and_interrupts.h"
 
-
-// 17:06:43 "d" (0x64) PRESSED
-//
 size_t calc_node_size(struct linked_list_node *node) {
     size_t size = 14;
     if (node->key.state == PRESSED) {
@@ -24,5 +21,50 @@ size_t calc_node_size(struct linked_list_node *node) {
 
 
 ssize_t read_keyboard_misc_device(struct file *file, char __user *buf, size_t count, loff_t *ppos) {
-	return simple_read_from_buffer(buf, count, ppos, "jrathelo", strlen("jrathelo"));
+    struct linked_list_node *tmp;
+    loff_t node_offset = *ppos;
+
+    mutex_lock(&lock);
+    list_for_each_entry(tmp, &keyboard_log, list) {
+        if (node_offset < tmp->size) {
+            break;
+        }
+        node_offset -= tmp->size;
+    }
+    if (node_offset > tmp->size) {
+        printk("early exit\n");
+        return 0;
+    }
+//    if (count > len - *ppos) {
+//        count = len - *ppos;
+//    }
+
+    size_t user_offset = 0;
+    for (; !list_entry_is_head(tmp, &keyboard_log, list); tmp = list_next_entry(tmp, list)) {
+        char sec = (tmp->when.tv_sec - (sys_tz.tz_minuteswest * 60)) % 60;
+        char min = (tmp->when.tv_sec - (sys_tz.tz_minuteswest * 60)) / 60 % 60;
+        char hour = (tmp->when.tv_sec - (sys_tz.tz_minuteswest * 60)) / 60 / 60 % 24;
+        char *buffer = kmalloc(sizeof(char) * tmp->size, GFP_KERNEL);
+        memset(buffer, 0, tmp->size);
+        snprintf(buffer, tmp->size, "%02d:%02d:%02d \"%s\"", hour, min, sec, tmp->key.key_name);
+        if (tmp->key.ascii_value) {
+            snprintf(buffer + strlen(buffer), tmp->size - strlen(buffer), "(0x%02x) ", tmp->key.ascii_value);
+        }
+        if (tmp->key.state == PRESSED) {
+            snprintf(buffer + strlen(buffer), tmp->size - strlen(buffer), "PRESSED\n");
+        } else {
+            snprintf(buffer + strlen(buffer), tmp->size - strlen(buffer), "RELEASED\n");
+        }
+
+        if (copy_to_user(buf + user_offset, buffer + node_offset, tmp->size - node_offset)) {
+            kfree(buffer);
+            return -EFAULT;
+        }
+        kfree(buffer);
+        user_offset += tmp->size - node_offset;
+        node_offset = 0;
+    }
+    *ppos += (long long)user_offset;
+    mutex_unlock(&lock);
+    return (long long)user_offset;
 }