From: Robert Yang Subject: [RFC 02/10] misc/util.c: implement populate_fs() Date: Wed, 28 Aug 2013 13:25:52 +0800 Message-ID: <1377667560-20089-3-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 mail.windriver.com ([147.11.1.11]:63250 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754004Ab3H1Faf (ORCPT ); Wed, 28 Aug 2013 01:30:35 -0400 In-Reply-To: <1377667560-20089-1-git-send-email-liezhi.yang@windriver.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: Use opendir() and readdir() to read the native directory, then use lstat() to identify the file type and call the corresponding function to add the file to the filesystem, call the populate_fs() recursively if it is a directory. NOTE: the libext2fs doesn't support create the socket file at them moment. Signed-off-by: Robert Yang --- misc/util.c | 90 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) diff --git a/misc/util.c b/misc/util.c index cbc7cc0..6d87393 100644 --- a/misc/util.c +++ b/misc/util.c @@ -337,4 +337,94 @@ errcode_t do_write_internal(ext2_ino_t cwd, const char *src, const char *dest) /* Copy files from source_dir to fs */ errcode_t populate_fs(ext2_ino_t parent_ino, const char *source_dir) { + const char *name; + DIR *dh; + struct dirent *dent; + struct stat st; + char ln_target[PATH_MAX]; + char *func_name = "populate_fs"; + ext2_ino_t ino; + errcode_t retval; + int read_cnt; + + root = EXT2_ROOT_INO; + + if (chdir(source_dir) < 0) { + com_err(func_name, errno, + _("while changing working directory to \"%s\""), source_dir); + return errno; + } + + if (!(dh = opendir("."))) { + com_err(func_name, errno, + _("while openning directory \"%s\""), source_dir); + return errno; + } + + while((dent = readdir(dh))) { + if((!strcmp(dent->d_name, ".")) || (!strcmp(dent->d_name, ".."))) + continue; + lstat(dent->d_name, &st); + name = dent->d_name; + + switch(st.st_mode & S_IFMT) { + case S_IFCHR: + case S_IFBLK: + case S_IFIFO: + if ((retval = do_mknod_internal(parent_ino, name, &st))) { + com_err(func_name, retval, + _("while creating special file \"%s\""), name); + return retval; + } + break; + case S_IFSOCK: + /* FIXME: there is no make sockect function atm. */ + com_err(func_name, 0, + _("ignoring sockect file\"%s\""), name); + break; + case S_IFLNK: + if((read_cnt = readlink(name, ln_target, sizeof(ln_target))) == -1) { + com_err(func_name, errno, + _("while trying to readlink \"%s\""), name); + return errno; + } + ln_target[read_cnt] = '\0'; + if ((retval = do_symlink_internal(parent_ino, name, ln_target))) { + com_err(func_name, retval, + _("while writing symlink\"%s\""), name); + return retval; + } + break; + case S_IFREG: + if ((retval = do_write_internal(parent_ino, name, name))) { + com_err(func_name, retval, + _("while writing file \"%s\""), name); + return retval; + } + break; + case S_IFDIR: + if ((retval = do_mkdir_internal(parent_ino, name, &st))) { + com_err(func_name, retval, + _("while making dir \"%s\""), name); + return retval; + } + if ((retval = ext2fs_namei(current_fs, root, parent_ino, name, &ino))) { + com_err(name, retval, 0); + return retval; + } + /* Populate the dir recursively*/ + retval = populate_fs(ino, name); + if (retval) { + com_err(func_name, retval, _("while adding dir \"%s\""), name); + return retval; + } + chdir(".."); + break; + default: + com_err(func_name, 0, + _("ignoring entry \"%s\""), name); + } + } + closedir(dh); + return retval; } -- 1.8.1.2