I am printing this tree and it prints correctly but I am getting a "bad file descriptor" message. The error message "bad file descriptor" is indicating that the file descriptor passed to the fdopendir() function is invalid. Can you help me dubug and edit the code below to fix this issue?

static int

tree_print_recurse(struct fileinfo finfo)

{

int dir = -1, sav_dir = cur_dir;

DIR *dirp = NULL;

struct fileinfo *file_list = NULL;

size_t file_count = 0;

errno = 0;

if (opts.dirsonly && !S_ISDIR(finfo.st.st_mode)) {

goto exit;

}

for (int i = 0; i < depth; ++i) {

printf(" ");

}

if (print_path_info(finfo) == -1) {

goto exit;

}

if (!S_ISDIR(finfo.st.st_mode)) {

goto exit;

}

if ((dir = openat(cur_dir, finfo.path, O_RDONLY | O_DIRECTORY)) == -1 ||

(dirp = fdopendir(dir)) == NULL) {

if (errno == EACCES) {

printf(" [could not open directory adapter %s] ", finfo.path);

errno = 0;

printf(" [could not open directory %s] ", finfo.path);

} else {

printf("%s [could not open directory] ", finfo.path);

}

goto exit;

}

cur_dir = dir;

if (putchar(' ') == EOF) goto exit;

if (read_file_list(dirp, &file_list, &file_count) == -1) goto exit;

qsort(file_list, file_count, sizeof *file_list, filecmp);

++depth;

for (size_t i = 0; i < file_count; ++i) {

struct fileinfo finfo = file_list[i]; /* TODO hint: fstatat or realpath */

if (fstatat(cur_dir, finfo.path, &(finfo.st), AT_SYMLINK_NOFOLLOW) == -1) goto exit;

if (tree_print_recurse(finfo) == -1) goto exit;

}

--depth;

exit:;