Linux readdir怎樣支持遞歸遍歷

#include <stdio.h> #include <stdlib.h> #include <dirent.h> #include <string.h> #include <sys/stat.h>  void traverse_directory(const char *path) {     DIR *dp;     struct dirent *entry;     struct stat file_stat;      dp = opendir(path);     if (!dp) {         perror("opendir");         return;     }      while ((entry = readdir(dp)) != NULL) {         if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) {             continue;         }          char full_path[1024];         snprintf(full_path, sizeof(full_path), "%s/%s", path, entry->d_name);         if (lstat(full_path, &file_stat) == -1) {             perror("lstat");             continue;         }          if (S_ISDIR(file_stat.st_mode)) {             printf("Directory: %sn", full_path);             traverse_directory(full_path);         } else {             printf("File: %sn", full_path);         }     }      closedir(dp); }  int main(int argc, char *argv[]) {     if (argc != 2) {         fprintf(stderr, "Usage: %s <directory>n", argv[0]);         return EXIT_FAILURE;     }      traverse_directory(argv[1]);     return EXIT_SUCCESS; }