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