Linux copendir返回值代表什么

int coprend(<span>const char *src, const char *dest)</span>;

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

int coprend(<span>const char *src, const char *dest)</span> {
    <span>struct stat st;</span>
    DIR *dir;
    <span>struct dirent *entry;</span>
    char src_path[PATH_MAX], dest_path[PATH_MAX];

    if (stat(src, &st) != 0) {
        perror("stat");
        return -1;
    }

    if (!S_ISDIR(st.st_mode)) {
        fprintf(stderr, "%s is not a directory\n", src);
        return -1;
    }

    if (mkdir(dest, st.st_mode) != 0 && errno != EEXIST) {
        perror("mkdir");
        return -1;
    }

    dir = opendir(src);
    if (dir == NULL) {
        perror("opendir");
        return -1;
    }

    while ((entry = readdir(dir)) != NULL) {
        if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) {
            continue;
        }

        snprintf(src_path, sizeof(src_path), "%s/%s", src, entry->d_name);
        snprintf(dest_path, sizeof(dest_path), "%s/%s", dest, entry->d_name);

        if (coprend(src_path, dest_path) != 0) {
            closedir(dir);
            return -1;
        }
    }

    closedir(dir);
    return 0;
}

int main(<span>int argc, char *argv[])</span> {
    if (argc != 3) {
        fprintf(stderr, "Usage: %s <source_directory> <destination_directory>\n", argv[0]);
        return 1;
    }

    if (coprend(argv[1], argv[2]) != 0) {
        fprintf(stderr, "Failed to copy directory tree\n");
        return 1;
    }

    printf("Directory tree copied successfully\n");
    return 0;
}