From patchwork Tue Dec 24 08:47:20 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Yang X-Patchwork-Id: 304913 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 F305A2C00A7 for ; Tue, 24 Dec 2013 19:47:39 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751665Ab3LXIrj (ORCPT ); Tue, 24 Dec 2013 03:47:39 -0500 Received: from mail.windriver.com ([147.11.1.11]:40447 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751661Ab3LXIrj (ORCPT ); Tue, 24 Dec 2013 03:47:39 -0500 Received: from ALA-HCB.corp.ad.wrs.com (ala-hcb.corp.ad.wrs.com [147.11.189.41]) by mail.windriver.com (8.14.5/8.14.5) with ESMTP id rBO8laZs027672 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL); Tue, 24 Dec 2013 00:47:36 -0800 (PST) Received: from pek-hostel-vm02.wrs.com (128.224.153.172) by ALA-HCB.corp.ad.wrs.com (147.11.189.41) with Microsoft SMTP Server id 14.2.347.0; Tue, 24 Dec 2013 00:47:36 -0800 From: Robert Yang To: , CC: Subject: [PATCH V2 04/11] misc/create_inode.c: create symlink Date: Tue, 24 Dec 2013 03:47:20 -0500 Message-ID: <1387874847-4922-5-git-send-email-liezhi.yang@windriver.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1387874847-4922-1-git-send-email-liezhi.yang@windriver.com> References: <1387874847-4922-1-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 3cf09e4..293694a 100644 --- a/misc/create_inode.c +++ b/misc/create_inode.c @@ -80,6 +80,38 @@ 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 */