core/fs/readdir.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include <sys/dirent.h>
   4 #include "fs.h"
   5 #include "core.h"
   6
   7 /*
   8  * Open a directory
   9  */
  10 DIR *opendir(const char *path)
  11 {
  12     int rv;
  13
  14     rv = searchdir(path);
  15     if (rv < 0)
  16         return NULL;
  17
  18     /* XXX: check for a directory handle here */
  19     return (DIR *)handle_to_file(rv);
  20 }
  21
  22 /*
  23  * Read one directory entry at one time.
  24  */
  25 struct dirent *readdir(DIR *dir)
  26 {
  27     static struct dirent buf;
  28     struct file *dd_dir = (struct file *)dir;
  29     int rv = -1;
  30
  31     if (dd_dir) {
  32         if (dd_dir->fs->fs_ops->readdir) {
  33             rv = dd_dir->fs->fs_ops->readdir(dd_dir, &buf);
  34         }
  35     }
  36
  37     return rv < 0 ? NULL : &buf;
  38 }
  39
  40 /*
  41  * Close a directory
  42  */
  43 int closedir(DIR *dir)
  44 {
  45     struct file *dd_dir = (struct file *)dir;
  46     _close_file(dd_dir);
  47     return 0;
  48 }
  49
  50