LXR busybox/e2fsprogs/old_e2fsprogs/ext2fs/dblist

   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
  24static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry *db_info,
  25                       void *priv_data);
  26
  27errcode_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
  66static 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}
  77