From 263b5c203e2a44f9090baed1ce0e72c9a4dc93f6 Mon Sep 17 00:00:00 2001
From: fastium <fastium.pro@proton.me>
Date: Thu, 2 Apr 2026 21:16:33 +0200
Subject: [PATCH] feat(lab03): WIP ex4

---
 .../exercice/ex4-character-oriented.c         | 47 +++++++++++++++++++
 src/02-driver/main.c                          |  9 +++-
 2 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/src/02-driver/exercice/ex4-character-oriented.c b/src/02-driver/exercice/ex4-character-oriented.c
index e69de29..8ca2cba 100644
--- a/src/02-driver/exercice/ex4-character-oriented.c
+++ b/src/02-driver/exercice/ex4-character-oriented.c
@@ -0,0 +1,47 @@
+#include <fcntl.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/errno.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+#define DATA_LENGTH 70
+
+const static char* data = "J'ai le chocolat qui est collé au palais, ducoup j'arrive pas a parlé\0";
+
+static char data_read[DATA_LENGTH] = {};
+
+int ex_character_oriented(void) {
+    printf("Exercice 4 - character oriented\n");
+
+    int ret = 0;
+
+    const char* path = "/dev/toto0\0";
+
+    int fd = open(path, O_RDWR);
+
+    if (fd < 0) {
+        printf("Failed to open /dev/toto0: %s\n (maybe you need to create it)\n", strerror(errno));
+        return 1;
+    }
+
+    ret = write(fd, data, DATA_LENGTH);
+
+    if(ret < 0) {
+        printf("Failed to write\n");
+        return 1;
+    }
+
+    ret = read(fd, data_read, DATA_LENGTH);
+
+    close(fd);
+
+    printf("Read from device: %s\n", path);
+    printf("Content: %s\n", data_read);
+
+
+    return 0;
+}
diff --git a/src/02-driver/main.c b/src/02-driver/main.c
index 6f68eab..cacf055 100644
--- a/src/02-driver/main.c
+++ b/src/02-driver/main.c
@@ -1,8 +1,10 @@
 #include <stdio.h>
 
 #include "exercice/ex1-memory-oriented.c"
-#define MEMORY_ORIENTED
+// #define MEMORY_ORIENTED
 
+#include "exercice/ex4-character-oriented.c"
+#define CHARACTER_ORIENTED
 
 
 int main() {
@@ -14,5 +16,10 @@ int main() {
     ret = ex_memory_oriented();
 #endif
 
+#ifdef CHARACTER_ORIENTED
+    printf("--------------------------------------\n");
+    ret = ex_character_oriented();
+#endif
+
     return ret;
 }