lib/ext2fs/dblist_dir.c

   1 /*
   2  * dblist_dir.c --- iterate by directory entry
   3  *
   4  * Copyright 1997 by Theodore Ts'o
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Public
   8  * License.
   9  * %End-Header%
  10  *
  11  */
  12
  13 #include <stdio.h>
  14 #if HAVE_UNISTD_H
  15 #include <unistd.h>
  16 #endif
  17 #include <string.h>
  18 #include <time.h>
  19
  20 #include <linux/ext2_fs.h>
  21
  22 #include "ext2fsP.h"
  23
  24 static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry *db_info,
  25                        void *private);
  26
  27 extern errcode_t
  28         ext2fs_dblist_dir_iterate(ext2_dblist dblist,
  29                                   int   flags,
  30                                   char  *block_buf,
  31                                   int (*func)(ino_t     dir,
  32                                               int       entry,
  33                                               struct ext2_dir_entry *dirent,
  34                                               int       offset,
  35                                               int       blocksize,
  36                                               char      *buf,
  37                                               void      *private),
  38                                   void *private)
  39 {
  40         errcode_t               retval;
  41         struct dir_context      ctx;
  42
  43         EXT2_CHECK_MAGIC(dblist, EXT2_ET_MAGIC_DBLIST);
  44
  45         ctx.dir = 0;
  46         ctx.flags = flags;
  47         if (block_buf)
  48                 ctx.buf = block_buf;
  49         else {
  50                 retval = ext2fs_get_mem(dblist->fs->blocksize,
  51                                         (void **) &ctx.buf);
  52                 if (retval)
  53                         return retval;
  54         }
  55         ctx.func = 0;
  56         ctx.func2 = func;
  57         ctx.private = private;
  58         ctx.errcode = 0;
  59
  60         retval = ext2fs_dblist_iterate(dblist, db_dir_proc, &ctx);
  61
  62         if (!block_buf)
  63                 ext2fs_free_mem((void **) &ctx.buf);
  64         if (retval)
  65                 return retval;
  66         return ctx.errcode;
  67 }
  68
  69 static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry *db_info,
  70                        void *private)
  71 {
  72         struct dir_context      *ctx = private;
  73
  74         ctx->dir = db_info->ino;
  75
  76         return ext2fs_process_dir_block(fs, &db_info->blk,
  77                                         db_info->blockcnt, private);
  78 }