9 int scandir(const char *path, struct dirent ***res,
10 int (*sel)(const struct dirent *),
11 int (*cmp)(const struct dirent **, const struct dirent **))
13 DIR *d = opendir(path);
14 struct dirent *de, **names=0, **tmp;
15 size_t cnt=0, len=0, size;
16 int old_errno = errno;
20 while ((errno=0), (de = readdir(d))) {
21 if (sel && !sel(de)) continue;
24 if (len > SIZE_MAX/sizeof *names) break;
25 tmp = realloc(names, len * sizeof *names);
29 size = offsetof(struct dirent,d_name) + strlen(de->d_name) + 1;
30 names[cnt] = malloc(size);
31 if (!names[cnt]) break;
32 memcpy(names[cnt++], de, size);
38 if (names) while (cnt-->0) free(names[cnt]);
44 if (cmp) qsort(names, cnt, sizeof *names, (int (*)(const void *, const void *))cmp);