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proba de get_partition() con udev

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This commit is contained in:
serxoz 2023-07-12 14:18:12 +02:00
parent 687e76b5bb
commit 526d3368ee
2 changed files with 58 additions and 1 deletions
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2
Makefile
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@ -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

57
mpfm.c
View File

@ -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);