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      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 Library
      8  * General Public License, version 2.
      9  * %End-Header%
     10  */
     11 
     12 #include <stdio.h>
     13 #if HAVE_UNISTD_H
     14 #include <unistd.h>
     15 #endif
     16 #include <string.h>
     17 #include <time.h>
     18 
     19 #include "ext2_fs.h"
     20 #include "ext2fsP.h"
     21 
     22 static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry2 *db_info,
     23 		       void *priv_data);
     24 
     25 errcode_t ext2fs_dblist_dir_iterate(ext2_dblist dblist,
     26 				    int	flags,
     27 				    char	*block_buf,
     28 				    int (*func)(ext2_ino_t dir,
     29 						int	entry,
     30 						struct ext2_dir_entry *dirent,
     31 						int	offset,
     32 						int	blocksize,
     33 						char	*buf,
     34 						void	*priv_data),
     35 				    void *priv_data)
     36 {
     37 	errcode_t		retval;
     38 	struct dir_context	ctx;
     39 
     40 	EXT2_CHECK_MAGIC(dblist, EXT2_ET_MAGIC_DBLIST);
     41 
     42 	ctx.dir = 0;
     43 	ctx.flags = flags;
     44 	if (block_buf)
     45 		ctx.buf = block_buf;
     46 	else {
     47 		retval = ext2fs_get_mem(dblist->fs->blocksize, &ctx.buf);
     48 		if (retval)
     49 			return retval;
     50 	}
     51 	ctx.func = func;
     52 	ctx.priv_data = priv_data;
     53 	ctx.errcode = 0;
     54 
     55 	retval = ext2fs_dblist_iterate2(dblist, db_dir_proc, &ctx);
     56 
     57 	if (!block_buf)
     58 		ext2fs_free_mem(&ctx.buf);
     59 	if (retval)
     60 		return retval;
     61 	return ctx.errcode;
     62 }
     63 
     64 static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry2 *db_info,
     65 		       void *priv_data)
     66 {
     67 	struct dir_context	*ctx;
     68 	int			ret;
     69 
     70 	ctx = (struct dir_context *) priv_data;
     71 	ctx->dir = db_info->ino;
     72 	ctx->errcode = 0;
     73 
     74 	ret = ext2fs_process_dir_block(fs, &db_info->blk,
     75 				       db_info->blockcnt, 0, 0, priv_data);
     76 	if ((ret & BLOCK_ABORT) && !ctx->errcode)
     77 		return DBLIST_ABORT;
     78 	return 0;
     79 }
     80