Directories

• Creation and removal
  • int mkdir(const char *pathname, mode_t mode);
  • int rmdir(const char *pathname);
    • Directory must be empty
• int remove(const char *pathname);
  • Does not follow symbolic links.
  • removes symbolic links
  • unlinks files
  • removes empty directories.
• Processing Directories
  • DIR *opendir(const char *name);
  • struct dirent *readdir(DIR *dirp);

    • struct dirent {
          ino_t          d_ino;       /* Inode number */
          off_t          d_off;       /* Not an offset; see below */
          unsigned short d_reclen;    /* Length of this record */
          unsigned char  d_type;      /* Type of file; not supported
                                         by all filesystem types */
          char           d_name[256]; /* Null-terminated filename */
      };
      

  • void rewinddir(DIR *dirp);
  • int closedir(DIR *dirp);
  • see dirReader.C