From: Robert Yang Subject: [RFC 04/10] misc/util.c: create symlink Date: Wed, 28 Aug 2013 13:25:54 +0800 Message-ID: <1377667560-20089-5-git-send-email-liezhi.yang@windriver.com> References: <1377667560-20089-1-git-send-email-liezhi.yang@windriver.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , To: Return-path: Received: from mail1.windriver.com ([147.11.146.13]:56009 "EHLO mail1.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754383Ab3H1Faj (ORCPT ); Wed, 28 Aug 2013 01:30:39 -0400 In-Reply-To: <1377667560-20089-1-git-send-email-liezhi.yang@windriver.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: 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 --- misc/util.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/misc/util.c b/misc/util.c index c793b42..f6ae7ca 100644 --- a/misc/util.c +++ b/misc/util.c @@ -392,6 +392,40 @@ 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; + name = name; + } + +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 */ -- 1.8.1.2