From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4BF71C10F00 for ; Sat, 7 Mar 2020 02:37:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1CB2E206E6 for ; Sat, 7 Mar 2020 02:37:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="EccoWQS9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727085AbgCGCgu (ORCPT ); Fri, 6 Mar 2020 21:36:50 -0500 Received: from mail-pg1-f201.google.com ([209.85.215.201]:34159 "EHLO mail-pg1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727052AbgCGCgo (ORCPT ); Fri, 6 Mar 2020 21:36:44 -0500 Received: by mail-pg1-f201.google.com with SMTP id 12so2530279pgv.1 for ; Fri, 06 Mar 2020 18:36:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=NzaUhXJKxblqI5Gh8t6DIY356EoyrOvF1fo+IUJGt18=; b=EccoWQS9AXS5hpeGqbDeRB4+lk5VSQiPuG6A9As+3Sz27I8WtlXC7LFsnBTkqyqscy fc8A0NXyynB4xbNC92kgeeMp1g9fvxDOIW9r/O/0XTtY4PAL6UrY6270d/juGsMo3wzS Id48ssVCGbe6Ql7ff0nq/tLqCaLFaeV/b+53mZWcesKKQlDvzCIKelbXLc0qz27vVeHD JTRdBGExEw1G+NoooIhNmw6AVYyOveSXsv5WLCTTBdXp2/epPotL5URlrY/UCT2V3HlI EKcpp6bpVGwX6D4lnw7C82WpWKpIAVs0ZviTE/X4oxpqJ2qOmlKTjoZZXeFRYseEvdm7 a35Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=NzaUhXJKxblqI5Gh8t6DIY356EoyrOvF1fo+IUJGt18=; b=s3haKyfEB/8huwBhXXwOXyYHDsltV/49Dznlfep1DybK98JL1+OGenYbROCCw8CTMC MBvHFaHlMwu8YPiuAxdyGHx04zZJmS4IMsGp83NWdfJmqZZK72VME2EzTalOTDFRyohA /regpZIRMmtzRRKij3SOkjTuHOEn93T/ywVnn7AFWtrBlJrGpHqLZv/CY1z1D7AZjRaz 1xyo5Wy23l2K3HLigOxLbGOkvPKtxibaUdXioloTme+yNC2BgklZykTkG41wXFm6J1e9 m3QtMYsp+Ln6u6TN9GVhGIYSoN4IHRJl8aJCX8koZfsGk9AojSrOprUBY9yF557b50A4 AkuQ== X-Gm-Message-State: ANhLgQ3WU8BDwiZIYDY/pn59rhyK1sWAOPQQ+wsbuggU1I05ZUUqrDIt 9NEfczIVuoyUZ0paZ3xpVfLFhS0KaMY= X-Google-Smtp-Source: ADFU+vupxVhCcnBRX+LRsi80i60l66Dbf4Wv4LxKEgsP+bQwFjA57ttf6c1Wy8uq3io7+mJZmPsncegbrKY= X-Received: by 2002:a17:90a:8509:: with SMTP id l9mr6698441pjn.43.1583548603121; Fri, 06 Mar 2020 18:36:43 -0800 (PST) Date: Fri, 6 Mar 2020 18:36:07 -0800 In-Reply-To: <20200307023611.204708-1-drosen@google.com> Message-Id: <20200307023611.204708-5-drosen@google.com> Mime-Version: 1.0 References: <20200307023611.204708-1-drosen@google.com> X-Mailer: git-send-email 2.25.1.481.gfbce0eb801-goog Subject: [PATCH v8 4/8] ext4: Use generic casefolding support From: Daniel Rosenberg To: "Theodore Ts'o" , linux-ext4@vger.kernel.org, Jaegeuk Kim , Chao Yu , linux-f2fs-devel@lists.sourceforge.net, Eric Biggers , linux-fscrypt@vger.kernel.org, Alexander Viro , Richard Weinberger Cc: linux-mtd@lists.infradead.org, Andreas Dilger , Jonathan Corbet , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Gabriel Krisman Bertazi , kernel-team@android.com, Daniel Rosenberg Content-Type: text/plain; charset="UTF-8" Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org This switches ext4 over to the generic casefolding support provided by the previous patch. Signed-off-by: Daniel Rosenberg --- fs/ext4/dir.c | 48 ++---------------------------------------------- fs/ext4/ext4.h | 12 ------------ fs/ext4/hash.c | 2 +- fs/ext4/namei.c | 20 ++++++++------------ fs/ext4/super.c | 12 ++++++------ 5 files changed, 17 insertions(+), 77 deletions(-) diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c index 9aa1f75409b02..04fd68c4adc5f 100644 --- a/fs/ext4/dir.c +++ b/fs/ext4/dir.c @@ -669,52 +669,8 @@ const struct file_operations ext4_dir_operations = { }; #ifdef CONFIG_UNICODE -static int ext4_d_compare(const struct dentry *dentry, unsigned int len, - const char *str, const struct qstr *name) -{ - struct qstr qstr = {.name = str, .len = len }; - const struct dentry *parent = READ_ONCE(dentry->d_parent); - const struct inode *inode = READ_ONCE(parent->d_inode); - - if (!inode || !IS_CASEFOLDED(inode) || - !EXT4_SB(inode->i_sb)->s_encoding) { - if (len != name->len) - return -1; - return memcmp(str, name->name, len); - } - - return ext4_ci_compare(inode, name, &qstr, false); -} - -static int ext4_d_hash(const struct dentry *dentry, struct qstr *str) -{ - const struct ext4_sb_info *sbi = EXT4_SB(dentry->d_sb); - const struct unicode_map *um = sbi->s_encoding; - const struct inode *inode = READ_ONCE(dentry->d_inode); - unsigned char *norm; - int len, ret = 0; - - if (!inode || !IS_CASEFOLDED(inode) || !um) - return 0; - - norm = kmalloc(PATH_MAX, GFP_ATOMIC); - if (!norm) - return -ENOMEM; - - len = utf8_casefold(um, str, norm, PATH_MAX); - if (len < 0) { - if (ext4_has_strict_mode(sbi)) - ret = -EINVAL; - goto out; - } - str->hash = full_name_hash(dentry, norm, len); -out: - kfree(norm); - return ret; -} - const struct dentry_operations ext4_dentry_ops = { - .d_hash = ext4_d_hash, - .d_compare = ext4_d_compare, + .d_hash = generic_ci_d_hash, + .d_compare = generic_ci_d_compare, }; #endif diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 61b37a052052b..b912c5611ddad 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1372,14 +1372,6 @@ struct ext4_super_block { #define EXT4_ENC_UTF8_12_1 1 -/* - * Flags for ext4_sb_info.s_encoding_flags. - */ -#define EXT4_ENC_STRICT_MODE_FL (1 << 0) - -#define ext4_has_strict_mode(sbi) \ - (sbi->s_encoding_flags & EXT4_ENC_STRICT_MODE_FL) - /* * fourth extended-fs super-block data in memory */ @@ -1429,10 +1421,6 @@ struct ext4_sb_info { struct kobject s_kobj; struct completion s_kobj_unregister; struct super_block *s_sb; -#ifdef CONFIG_UNICODE - struct unicode_map *s_encoding; - __u16 s_encoding_flags; -#endif /* Journaling */ struct journal_s *s_journal; diff --git a/fs/ext4/hash.c b/fs/ext4/hash.c index 3e133793a5a34..143b0073b3f46 100644 --- a/fs/ext4/hash.c +++ b/fs/ext4/hash.c @@ -275,7 +275,7 @@ int ext4fs_dirhash(const struct inode *dir, const char *name, int len, struct dx_hash_info *hinfo) { #ifdef CONFIG_UNICODE - const struct unicode_map *um = EXT4_SB(dir->i_sb)->s_encoding; + const struct unicode_map *um = dir->i_sb->s_encoding; int r, dlen; unsigned char *buff; struct qstr qstr = {.name = name, .len = len }; diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index b05ea72f38fd1..1a1c4fdcfd3ee 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1286,8 +1286,8 @@ static void dx_insert_block(struct dx_frame *frame, u32 hash, ext4_lblk_t block) int ext4_ci_compare(const struct inode *parent, const struct qstr *name, const struct qstr *entry, bool quick) { - const struct ext4_sb_info *sbi = EXT4_SB(parent->i_sb); - const struct unicode_map *um = sbi->s_encoding; + const struct super_block *sb = parent->i_sb; + const struct unicode_map *um = sb->s_encoding; int ret; if (quick) @@ -1299,7 +1299,7 @@ int ext4_ci_compare(const struct inode *parent, const struct qstr *name, /* Handle invalid character sequence as either an error * or as an opaque byte sequence. */ - if (ext4_has_strict_mode(sbi)) + if (sb_has_enc_strict_mode(sb)) return -EINVAL; if (name->len != entry->len) @@ -1316,7 +1316,7 @@ void ext4_fname_setup_ci_filename(struct inode *dir, const struct qstr *iname, { int len; - if (!IS_CASEFOLDED(dir) || !EXT4_SB(dir->i_sb)->s_encoding) { + if (!needs_casefold(dir)) { cf_name->name = NULL; return; } @@ -1325,7 +1325,7 @@ void ext4_fname_setup_ci_filename(struct inode *dir, const struct qstr *iname, if (!cf_name->name) return; - len = utf8_casefold(EXT4_SB(dir->i_sb)->s_encoding, + len = utf8_casefold(dir->i_sb->s_encoding, iname, cf_name->name, EXT4_NAME_LEN); if (len <= 0) { @@ -1362,7 +1362,7 @@ static inline bool ext4_match(const struct inode *parent, #endif #ifdef CONFIG_UNICODE - if (EXT4_SB(parent->i_sb)->s_encoding && IS_CASEFOLDED(parent)) { + if (needs_casefold(parent)) { if (fname->cf_name.name) { struct qstr cf = {.name = fname->cf_name.name, .len = fname->cf_name.len}; @@ -2171,9 +2171,6 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry, struct buffer_head *bh = NULL; struct ext4_dir_entry_2 *de; struct super_block *sb; -#ifdef CONFIG_UNICODE - struct ext4_sb_info *sbi; -#endif struct ext4_filename fname; int retval; int dx_fallback=0; @@ -2190,9 +2187,8 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry, return -EINVAL; #ifdef CONFIG_UNICODE - sbi = EXT4_SB(sb); - if (ext4_has_strict_mode(sbi) && IS_CASEFOLDED(dir) && - sbi->s_encoding && utf8_validate(sbi->s_encoding, &dentry->d_name)) + if (sb_has_enc_strict_mode(sb) && IS_CASEFOLDED(dir) && + sb->s_encoding && utf8_validate(sb->s_encoding, &dentry->d_name)) return -EINVAL; #endif diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 0c7c4adb664ec..11a7af11d8aee 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1112,7 +1112,7 @@ static void ext4_put_super(struct super_block *sb) kfree(sbi->s_blockgroup_lock); fs_put_dax(sbi->s_daxdev); #ifdef CONFIG_UNICODE - utf8_unload(sbi->s_encoding); + utf8_unload(sb->s_encoding); #endif kfree(sbi); } @@ -3926,7 +3926,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) goto failed_mount; #ifdef CONFIG_UNICODE - if (ext4_has_feature_casefold(sb) && !sbi->s_encoding) { + if (ext4_has_feature_casefold(sb) && !sb->s_encoding) { const struct ext4_sb_encodings *encoding_info; struct unicode_map *encoding; __u16 encoding_flags; @@ -3957,8 +3957,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) "%s-%s with flags 0x%hx", encoding_info->name, encoding_info->version?:"\b", encoding_flags); - sbi->s_encoding = encoding; - sbi->s_encoding_flags = encoding_flags; + sb->s_encoding = encoding; + sb->s_encoding_flags = encoding_flags; } #endif @@ -4571,7 +4571,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) } #ifdef CONFIG_UNICODE - if (sbi->s_encoding) + if (sb->s_encoding) sb->s_d_op = &ext4_dentry_ops; #endif @@ -4766,7 +4766,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) crypto_free_shash(sbi->s_chksum_driver); #ifdef CONFIG_UNICODE - utf8_unload(sbi->s_encoding); + utf8_unload(sb->s_encoding); #endif #ifdef CONFIG_QUOTA -- 2.25.1.481.gfbce0eb801-goog