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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 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 "ext2_fs.h"
21 #include "ext2fsP.h"
22 
23 static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry *db_info,
24 		       void *priv_data);
25 
ext2fs_dblist_dir_iterate(ext2_dblist dblist,int flags,char * block_buf,int (* func)(ext2_ino_t dir,int entry,struct ext2_dir_entry * dirent,int offset,int blocksize,char * buf,void * priv_data),void * priv_data)26 errcode_t ext2fs_dblist_dir_iterate(ext2_dblist dblist,
27 				    int	flags,
28 				    char	*block_buf,
29 				    int (*func)(ext2_ino_t dir,
30 						int	entry,
31 						struct ext2_dir_entry *dirent,
32 						int	offset,
33 						int	blocksize,
34 						char	*buf,
35 						void	*priv_data),
36 				    void *priv_data)
37 {
38 	errcode_t		retval;
39 	struct dir_context	ctx;
40 
41 	EXT2_CHECK_MAGIC(dblist, EXT2_ET_MAGIC_DBLIST);
42 
43 	ctx.dir = 0;
44 	ctx.flags = flags;
45 	if (block_buf)
46 		ctx.buf = block_buf;
47 	else {
48 		retval = ext2fs_get_mem(dblist->fs->blocksize, &ctx.buf);
49 		if (retval)
50 			return retval;
51 	}
52 	ctx.func = func;
53 	ctx.priv_data = priv_data;
54 	ctx.errcode = 0;
55 
56 	retval = ext2fs_dblist_iterate(dblist, db_dir_proc, &ctx);
57 
58 	if (!block_buf)
59 		ext2fs_free_mem(&ctx.buf);
60 	if (retval)
61 		return retval;
62 	return ctx.errcode;
63 }
64 
db_dir_proc(ext2_filsys fs,struct ext2_db_entry * db_info,void * priv_data)65 static int db_dir_proc(ext2_filsys fs, struct ext2_db_entry *db_info,
66 		       void *priv_data)
67 {
68 	struct dir_context	*ctx;
69 	int			ret;
70 
71 	ctx = (struct dir_context *) priv_data;
72 	ctx->dir = db_info->ino;
73 	ctx->errcode = 0;
74 
75 	ret = ext2fs_process_dir_block(fs, &db_info->blk,
76 				       db_info->blockcnt, 0, 0, priv_data);
77 	if ((ret & BLOCK_ABORT) && !ctx->errcode)
78 		return DBLIST_ABORT;
79 	return 0;
80 }
81