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  1. #define _DEFAULT_SOURCE
  2. #define _BSD_SOURCE
  3. #include <stdio.h>
  4. #include <string.h>
  5. #include <sys/types.h>
  6. #include <sys/stat.h>
  7. #include <fcntl.h>
  8. #include <unistd.h>
  9. #include <dirent.h>
  10.  
  11. void
  12. dir_recurse (DIR *parent, int level)
  13. {
  14.     struct dirent *ent;
  15.     DIR *child;
  16.     int fd;
  17.  
  18.     while ((ent = readdir(parent)) != NULL) {
  19.         if ((strcmp(ent->d_name, ".") == 0) ||
  20.             (strcmp(ent->d_name, "..") == 0)) {
  21.             continue;
  22.         }
  23.         if (ent->d_type == DT_DIR) {
  24.             printf("%*s%s/\n", level, "", ent->d_name);
  25.             fd = openat(dirfd(parent), ent->d_name, O_RDONLY | O_DIRECTORY);
  26.             if (fd != -1) {
  27.                 child = fdopendir(fd);
  28.                 dir_recurse(child, level + 1);
  29.                 closedir(child);
  30.             } else {
  31.                 perror("open");
  32.             }
  33.         } else {
  34.             printf("%*s%s\n", level, "", ent->d_name);
  35.         }
  36.     }
  37. }
  38.  
  39. int
  40. main (int argc, char *argv)
  41. {
  42.     DIR *root;
  43.  
  44.     root = opendir("..");
  45.     dir_recurse(root, 0);
  46.     closedir(root);
  47.  
  48.     return 0;
  49. }
Success #stdin #stdout 0s 9456KB
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o4mwcw/
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79ViqI/
https://ideone.com/UW24uF
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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