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/*
* lookup.c --- ext2fs directory lookup operations
*
* Copyright (C) 1993, 1994, 1994, 1995 Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
*/
#include <stdio.h>
#include <string.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "ext2_fs.h"
#include "ext2fs.h"
struct lookup_struct {
const char *name;
int len;
ext2_ino_t *inode;
int found;
};
#ifdef __TURBOC__
# pragma argsused
#endif
static int lookup_proc(struct ext2_dir_entry *dirent,
int offset EXT2FS_ATTR((unused)),
int blocksize EXT2FS_ATTR((unused)),
char *buf EXT2FS_ATTR((unused)),
void *priv_data)
{
struct lookup_struct *ls = (struct lookup_struct *) priv_data;
if (ls->len != (dirent->name_len & 0xFF))
return 0;
if (strncmp(ls->name, dirent->name, (dirent->name_len & 0xFF)))
return 0;
*ls->inode = dirent->inode;
ls->found++;
return DIRENT_ABORT;
}
errcode_t ext2fs_lookup(ext2_filsys fs, ext2_ino_t dir, const char *name,
int namelen, char *buf, ext2_ino_t *inode)
{
errcode_t retval;
struct lookup_struct ls;
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
ls.name = name;
ls.len = namelen;
ls.inode = inode;
ls.found = 0;
retval = ext2fs_dir_iterate(fs, dir, 0, buf, lookup_proc, &ls);
if (retval)
return retval;
return (ls.found) ? 0 : EXT2_ET_FILE_NOT_FOUND;
}
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