如何使用C查找Linux中哪个设备连接到USB串口？

#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <string.h>

int main() {
    DIR *dir;
    struct dirent *entry;
    char dev[128];      // 设备路径
    char path[256];     // 设备的sys路径
    char buf[256];      // 存储读取到的数据

    dir = opendir("/sys/class/tty");
    if (dir == NULL) {
        perror("opendir");
        return 1;
    }

    while ((entry = readdir(dir)) != NULL) {
        if (strstr(entry->d_name, "USB") != NULL) {
            snprintf(dev, sizeof(dev), "/dev/%s", entry->d_name);
            snprintf(path, sizeof(path), "/sys/class/tty/%s/device/../uevent", entry->d_name);

            FILE *fp = fopen(path, "r");
            if (fp != NULL) {
                while (fgets(buf, sizeof(buf), fp) != NULL) {
                    if (strstr(buf, "ID_SERIAL_SHORT") != NULL) {
                        printf("USB串口设备路径：%s\n", dev);
                        printf("设备序列号：%s\n", strchr(buf, '=') + 1);
                        break;
                    }
                }
                fclose(fp);
            }
        }
    }

    closedir(dir);
    return 0;
}