release/src/router/busybox/e2fsprogs/ext2fs/dblist_dir.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * dblist_dir.c --- iterate by directory entry
   4  *
   5  * Copyright 1997 by Theodore Ts'o
   6  *
   7  * %Begin-Header%
   8  * This file may be redistributed under the terms of the GNU Public
   9  * License.
  10  * %End-Header%
  11  *
  12  */
  13
  14 #include <stdio.h>
  15 #if HAVE_UNISTD_H
  16 #include <unistd.h>
  17 #endif
  18 #include <string.h>
  19 #include <time.h>
  20
  21 #include "ext2_fs.h"
  22 #include "ext2fsP.h"
  23
  24 static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry *db_info,
  25                        void *priv_data);
  26
  27 errcode_t ext2fs_dblist_dir_iterate(ext2_dblist dblist,
  28                                     int flags,
  29                                     char        *block_buf,
  30                                     int (*func)(ext2_ino_t dir,
  31                                                 int     entry,
  32                                                 struct ext2_dir_entry *dirent,
  33                                                 int     offset,
  34                                                 int     blocksize,
  35                                                 char    *buf,
  36                                                 void    *priv_data),
  37                                     void *priv_data)
  38 {
  39         errcode_t               retval;
  40         struct dir_context      ctx;
  41
  42         EXT2_CHECK_MAGIC(dblist, EXT2_ET_MAGIC_DBLIST);
  43
  44         ctx.dir = 0;
  45         ctx.flags = flags;
  46         if (block_buf)
  47                 ctx.buf = block_buf;
  48         else {
  49                 retval = ext2fs_get_mem(dblist->fs->blocksize, &ctx.buf);
  50                 if (retval)
  51                         return retval;
  52         }
  53         ctx.func = func;
  54         ctx.priv_data = priv_data;
  55         ctx.errcode = 0;
  56
  57         retval = ext2fs_dblist_iterate(dblist, db_dir_proc, &ctx);
  58
  59         if (!block_buf)
  60                 ext2fs_free_mem(&ctx.buf);
  61         if (retval)
  62                 return retval;
  63         return ctx.errcode;
  64 }
  65
  66 static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry *db_info,
  67                        void *priv_data)
  68 {
  69         struct dir_context      *ctx;
  70
  71         ctx = (struct dir_context *) priv_data;
  72         ctx->dir = db_info->ino;
  73
  74         return ext2fs_process_dir_block(fs, &db_info->blk,
  75                                         db_info->blockcnt, 0, 0, priv_data);
  76 }