linux c 读取过程文件夹

#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <sys/stat.h>
#include <string.h>

void listdir(char *path) {
    DIR *dir;
    struct dirent *entry;
    struct stat statbuf;

    if ((dir = opendir(path)) == NULL) {
        perror("opendir");
        return;
    }

    while ((entry = readdir(dir)) != NULL) {
        char fullpath[1024];
        snprintf(fullpath, sizeof(fullpath), "%s/%s", path, entry->d_name);

        if (lstat(fullpath, &statbuf) == -1) {
            perror("lstat");
            continue;
        }

        if (S_ISDIR(statbuf.st_mode)) {
            if (strcmp(entry->d_name, ".") != 0 && strcmp(entry->d_name, "..") != 0) {
                listdir(fullpath); // Recursively list subdirectories
            }
        } else {
            printf("%s\n", fullpath);
        }
    }

    closedir(dir);
}

int main(int argc, char *argv[]) {
    if (argc != 2) {
        fprintf(stderr, "Usage: %s <directory>\n", argv[0]);
        return 1;
    }

    listdir(argv[1]);
    return 0;
}