From patchwork Fri Dec 27 09:08:58 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Yang X-Patchwork-Id: 305431 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3DDD52C00A7 for ; Fri, 27 Dec 2013 20:09:25 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754267Ab3L0JJT (ORCPT ); Fri, 27 Dec 2013 04:09:19 -0500 Received: from mail1.windriver.com ([147.11.146.13]:36209 "EHLO mail1.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754259Ab3L0JJR (ORCPT ); Fri, 27 Dec 2013 04:09:17 -0500 Received: from ALA-HCA.corp.ad.wrs.com (ala-hca.corp.ad.wrs.com [147.11.189.40]) by mail1.windriver.com (8.14.5/8.14.5) with ESMTP id rBR99E4Z014203 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Fri, 27 Dec 2013 01:09:14 -0800 (PST) Received: from pek-hostel-vm02.wrs.com (128.224.153.172) by ALA-HCA.corp.ad.wrs.com (147.11.189.40) with Microsoft SMTP Server id 14.2.347.0; Fri, 27 Dec 2013 01:09:14 -0800 From: Robert Yang To: , CC: Subject: [PATCH V3 04/11] misc/create_inode.c: create symlink Date: Fri, 27 Dec 2013 04:08:58 -0500 Message-ID: <1388135345-2006-5-git-send-email-liezhi.yang@windriver.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1388135345-2006-1-git-send-email-liezhi.yang@windriver.com> References: <1388135345-2006-1-git-send-email-liezhi.yang@windriver.com> MIME-Version: 1.0 Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org The do_symlink_internal() is used for creating symlinks, most of the code are from debugfs/debugfs.c, the debugfs/debugfs.c will be modified to use this function. Signed-off-by: Robert Yang Reviewed-by: Darren Hart --- misc/create_inode.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/misc/create_inode.c b/misc/create_inode.c index cea37c9..20bfb80 100644 --- a/misc/create_inode.c +++ b/misc/create_inode.c @@ -88,6 +88,38 @@ errcode_t do_mknod_internal(ext2_ino_t cwd, const char *name, struct stat *st) /* Make a symlink name -> target */ errcode_t do_symlink_internal(ext2_ino_t cwd, const char *name, char *target) { + char *cp; + ext2_ino_t parent_ino; + errcode_t retval; + struct ext2_inode inode; + struct stat st; + + cp = strrchr(name, '/'); + if (cp) { + *cp = 0; + if ((retval = ext2fs_namei(current_fs, root, cwd, name, &parent_ino))){ + com_err(name, retval, 0); + return retval; + } + name = cp+1; + } else + parent_ino = cwd; + +try_again: + retval = ext2fs_symlink(current_fs, parent_ino, 0, name, target); + if (retval == EXT2_ET_DIR_NO_SPACE) { + retval = ext2fs_expand_dir(current_fs, parent_ino); + if (retval) { + com_err("do_symlink_internal", retval, "while expanding directory"); + return retval; + } + goto try_again; + } + if (retval) { + com_err("ext2fs_symlink", retval, 0); + return retval; + } + } /* Make a directory in the fs */