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[81.169.180.215]) by mx.google.com with ESMTP id u9-v6si3063411edf.117.2018.09.04.01.05.37; Tue, 04 Sep 2018 01:05:37 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of u-boot-bounces@lists.denx.de designates 81.169.180.215 as permitted sender) client-ip=81.169.180.215; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org header.s=google header.b=al2JDBNQ; spf=pass (google.com: best guess record for domain of u-boot-bounces@lists.denx.de designates 81.169.180.215 as permitted sender) smtp.mailfrom=u-boot-bounces@lists.denx.de; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: by lists.denx.de (Postfix, from userid 105) id 0B345C21F4D; Tue, 4 Sep 2018 07:58:44 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=-0.0 required=5.0 tests=RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, T_DKIM_INVALID autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id 1A3F5C21F3D; Tue, 4 Sep 2018 07:58:27 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 00F27C21F29; Tue, 4 Sep 2018 07:52:20 +0000 (UTC) Received: from mail-pf1-f196.google.com (mail-pf1-f196.google.com [209.85.210.196]) by lists.denx.de (Postfix) with ESMTPS id 7EB3DC21DEC for ; Tue, 4 Sep 2018 07:52:16 +0000 (UTC) Received: by mail-pf1-f196.google.com with SMTP id x17-v6so1284427pfh.5 for ; Tue, 04 Sep 2018 00:52:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=0jMhZ1yBMWcqnnjbqsMMAgNe5ndC1C+5DVRpxh8JmBo=; b=al2JDBNQfphCtYbKxH/9aLDPD57UdL6buPLUxR7ZqS8mJf03XDv5dqNkCU/qMGOCu4 8MoB2WEOAOFpR7lDg4iYF4lLs9OT5FHFrihjJTz5WlWRyj2UblQbNv4qkEY6vXy5+2W9 ytvWafLskF9lmTDPB3XUDVnWz2A33SFwWmdDg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=0jMhZ1yBMWcqnnjbqsMMAgNe5ndC1C+5DVRpxh8JmBo=; b=mTonwlvWutQBl7vOdizKxmFyPgJgoVq6UzR7ogqmE3yd9NY0uwopX9480eOHJ83oon vmt/RNbVZ2hWLSkhxwgwrvmdi/qgtZkY9Ej1VlA7UiqASnLEYD90hXdJbwjqsKbyItkE gNGJOWhhb0L9gie3+DCyszFnaH9pn4EvO6kwP2lCwkHmdlWwwujRFWpGpadZCnV2yADB VExi4oNdrMPYq9dlsg92DaxaBClaa+1aPhjPMrMQqqTnocQZxCd2tOIqLwMltxCRtCwj h+Gpmjrbfbi4Tu3C4Pujz14p0tNNm113vcoxCNzNsc3Yuptg+DR9Q6B+8TtcGmdlzeaN KUIQ== X-Gm-Message-State: APzg51BU+F2c+Nh6dMu5NDg+juiI1bJPmkfZF7GHlMsyJKK+qX52zvbY R4zh9zPxA+Gd4hEkwN5Dtq4fsg== X-Received: by 2002:a65:6550:: with SMTP id a16-v6mr29362274pgw.22.1536047535178; Tue, 04 Sep 2018 00:52:15 -0700 (PDT) Received: from linaro.org ([121.95.100.191]) by smtp.googlemail.com with ESMTPSA id c1-v6sm26095234pfi.142.2018.09.04.00.52.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 04 Sep 2018 00:52:14 -0700 (PDT) From: AKASHI Takahiro To: trini@konsulko.com Date: Tue, 4 Sep 2018 16:49:40 +0900 Message-Id: <20180904074948.18146-16-takahiro.akashi@linaro.org> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180904074948.18146-1-takahiro.akashi@linaro.org> References: <20180904074948.18146-1-takahiro.akashi@linaro.org> Cc: xypron.glpk@gmx.de, agraf@suse.de, u-boot@lists.denx.de Subject: [U-Boot] [PATCH v2 15/23] fs: fat: support mkdir X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" In this patch, mkdir support is added to FAT file system. A newly created directory contains only "." and ".." entries. Signed-off-by: AKASHI Takahiro --- fs/fat/fat_write.c | 136 +++++++++++++++++++++++++++++++++++++++++++++ fs/fs.c | 3 +- include/fat.h | 1 + 3 files changed, 139 insertions(+), 1 deletion(-) diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c index 523abd62c9e9..fe0265649200 100644 --- a/fs/fat/fat_write.c +++ b/fs/fat/fat_write.c @@ -1183,3 +1183,139 @@ int file_fat_write(const char *filename, void *buffer, loff_t offset, { return file_fat_write_at(filename, offset, buffer, maxsize, actwrite); } + +int fat_mkdir(const char *new_dirname) +{ + dir_entry *retdent; + fsdata datablock = { .fatbuf = NULL, }; + fsdata *mydata = &datablock; + fat_itr *itr = NULL; + char *dirname_copy, *parent, *dirname; + char l_dirname[VFAT_MAXLEN_BYTES]; + int ret = -1; + loff_t actwrite; + unsigned int bytesperclust; + dir_entry *dotdent = NULL; + + dirname_copy = strdup(new_dirname); + if (!dirname_copy) + goto exit; + + split_filename(dirname_copy, &parent, &dirname); + if (!strlen(dirname)) { + ret = -EINVAL; + goto exit; + } + + if (normalize_longname(l_dirname, dirname)) { + printf("FAT: illegal filename (%s)\n", dirname); + ret = -EINVAL; + goto exit; + } + + itr = malloc_cache_aligned(sizeof(fat_itr)); + if (!itr) { + ret = -ENOMEM; + goto exit; + } + + ret = fat_itr_root(itr, &datablock); + if (ret) + goto exit; + + total_sector = datablock.total_sect; + + ret = fat_itr_resolve(itr, parent, TYPE_DIR); + if (ret) { + printf("%s: doesn't exist (%d)\n", parent, ret); + goto exit; + } + + retdent = find_directory_entry(itr, l_dirname); + + if (retdent) { + printf("%s: already exists\n", l_dirname); + ret = -EEXIST; + goto exit; + } else { + if (itr->is_root) { + /* root dir cannot have "." or ".." */ + if (!strcmp(l_dirname, ".") || + !strcmp(l_dirname, "..")) { + ret = -EINVAL; + goto exit; + } + } + + if (!itr->dent) { + printf("Error: allocating new dir entry\n"); + ret = -EIO; + goto exit; + } + + memset(itr->dent, 0, sizeof(*itr->dent)); + + /* Set short name to set alias checksum field in dir_slot */ + set_name(itr->dent, dirname); + fill_dir_slot(itr, dirname); + + /* Set attribute as archieve for regular file */ + fill_dentry(itr->fsdata, itr->dent, dirname, 0, 0, + ATTR_DIR | ATTR_ARCH); + + retdent = itr->dent; + } + + /* Default entries */ + bytesperclust = mydata->clust_size * mydata->sect_size; + dotdent = malloc_cache_aligned(bytesperclust); + if (!dotdent) { + ret = -ENOMEM; + goto exit; + } + memset(dotdent, 0, bytesperclust); + + memcpy(dotdent[0].name, ". ", 8); + memcpy(dotdent[0].ext, " ", 3); + dotdent[0].attr = ATTR_DIR | ATTR_ARCH; + + memcpy(dotdent[1].name, ".. ", 8); + memcpy(dotdent[1].ext, " ", 3); + dotdent[1].attr = ATTR_DIR | ATTR_ARCH; + set_start_cluster(mydata, &dotdent[1], itr->start_clust); + + ret = set_contents(mydata, retdent, 0, (__u8 *)dotdent, + bytesperclust, &actwrite); + if (ret < 0) { + printf("Error: writing contents\n"); + goto exit; + } + /* Write twice for "." */ + set_start_cluster(mydata, &dotdent[0], START(retdent)); + ret = set_contents(mydata, retdent, 0, (__u8 *)dotdent, + bytesperclust, &actwrite); + if (ret < 0) { + printf("Error: writing contents\n"); + goto exit; + } + + /* Flush fat buffer */ + ret = flush_dirty_fat_buffer(mydata); + if (ret) { + printf("Error: flush fat buffer\n"); + goto exit; + } + + /* Write directory table to device */ + ret = set_cluster(mydata, itr->clust, itr->block, + mydata->clust_size * mydata->sect_size); + if (ret) + printf("Error: writing directory entry\n"); + +exit: + free(dirname_copy); + free(mydata->fatbuf); + free(itr); + free(dotdent); + return ret; +} diff --git a/fs/fs.c b/fs/fs.c index 62165d5c5701..099540f38a10 100644 --- a/fs/fs.c +++ b/fs/fs.c @@ -164,14 +164,15 @@ static struct fstype_info fstypes[] = { .read = fat_read_file, #ifdef CONFIG_FAT_WRITE .write = file_fat_write, + .mkdir = fat_mkdir, #else .write = fs_write_unsupported, + .mkdir = fs_mkdir_unsupported, #endif .uuid = fs_uuid_unsupported, .opendir = fat_opendir, .readdir = fat_readdir, .closedir = fat_closedir, - .mkdir = fs_mkdir_unsupported, }, #endif #ifdef CONFIG_FS_EXT4 diff --git a/include/fat.h b/include/fat.h index 05a993bfdcfe..c34eb8cec6bd 100644 --- a/include/fat.h +++ b/include/fat.h @@ -239,6 +239,7 @@ int fat_read_file(const char *filename, void *buf, loff_t offset, loff_t len, int fat_opendir(const char *filename, struct fs_dir_stream **dirsp); int fat_readdir(struct fs_dir_stream *dirs, struct fs_dirent **dentp); void fat_closedir(struct fs_dir_stream *dirs); +int fat_mkdir(const char *dirname); void fat_close(void); #endif /* CONFIG_FS_FAT */ #endif /* _FAT_H_ */