proba de get_partition() con udev

Makefile

@@ -7,7 +7,7 @@ build: target/mpfm target/mpfm.service
 
 target/mpfm: mpfm.c
 	mkdir -p target
-	$(CC) -std=gnu99 -O2 mpfm.c -lusb-1.0 -o target/mpfm
+	$(CC) -std=gnu99 -O2 mpfm.c -lusb-1.0 -ludev -o target/mpfm
 
 target/mpfm.service: mpfm.service
 	mkdir -p target

mpfm.c

@@ -4,6 +4,59 @@
 #include <libusb-1.0/libusb.h>
 
 static int count = 0;
+#include <libudev.h>
+#include <string.h>
+
+void get_partition(uint16_t idVendor, uint16_t idProduct) {
+    struct udev *udev = udev_new();
+    if (!udev) {
+        printf("Error: Failed to initialize udev.\n");
+        return;
+    }
+
+    struct udev_enumerate *enumerate = udev_enumerate_new(udev);
+    udev_enumerate_add_match_subsystem(enumerate, "block");
+    udev_enumerate_scan_devices(enumerate);
+
+    struct udev_list_entry *devices = udev_enumerate_get_list_entry(enumerate);
+    struct udev_list_entry *entry;
+
+    udev_list_entry_foreach(entry, devices) {
+        const char *path = udev_list_entry_get_name(entry);
+        struct udev_device *dev = udev_device_new_from_syspath(udev, path);
+
+        // Obtén el idVendor e idProduct del dispositivo USB actual
+        const char *vendor_id_str = udev_device_get_sysattr_value(dev, "idVendor");
+        const char *product_id_str = udev_device_get_sysattr_value(dev, "idProduct");
+        printf(vendor_id_str);
+
+        if (vendor_id_str && product_id_str) {
+            uint16_t vendor_id = strtol(vendor_id_str, NULL, 16);
+            uint16_t product_id = strtol(product_id_str, NULL, 16);
+
+            if (vendor_id == idVendor && product_id == idProduct) {
+                const char *partition = udev_device_get_devnode(dev);
+                if (partition) {
+                    // Extraer el nombre de la partición
+                    const char *partition_name = strrchr(partition, '/');
+                    if (partition_name) {
+                        printf("Partition: %s\n", partition_name + 1);
+                    } else {
+                        printf("Partition: %s\n", partition);
+                    }
+                } else {
+                    printf("Error: Failed to get partition.\n");
+                }
+                break;
+            }
+        }
+
+        udev_device_unref(dev);
+    }
+
+    udev_enumerate_unref(enumerate);
+    udev_unref(udev);
+}
 
 int hotplug_callback(struct libusb_context *ctx, struct libusb_device *dev,
         libusb_hotplug_event event, void *user_data) {
@@ -22,6 +75,10 @@ int hotplug_callback(struct libusb_context *ctx, struct libusb_device *dev,
         if (LIBUSB_SUCCESS != rc) {
             printf("Could not open USB device\n");
         }
+
+        // Obtén la partición del dispositivo
+        get_partition(desc.idVendor, desc.idProduct);
+
     } else if (LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT == event) {
         if (dev_handle) {
             libusb_close(dev_handle);