From patchwork Tue Feb 20 08:52:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 13563609 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 56487C48BC4 for ; Tue, 20 Feb 2024 08:53:04 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-4.v29.lw.sourceforge.com) by sfs-ml-4.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1rcLs6-0000C2-LG; Tue, 20 Feb 2024 08:53:02 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-4.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1rcLs4-0000Bo-FA for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:00 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=bLj6BkOOj6QP6flSGLrMwh8Bhh9dmUPrqQK2TTtbiVo=; b=NPxfgyJdHv25HDbrMxcoS1tuc8 6Ee8Mw7lAHZP+2Yi8STRpGqm/P2bTxQcxGPYOGtp4LF5dBnlc0Pg3hNNs0uNP82hxnFm6Qf0k3ojg FXKV41NxjOLCFvL+guA2iHjZVCGvBLcUxitG2+rJnGCOu5V7f0x0Z8krJzaFymNE2A5w=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=bLj6BkOOj6QP6flSGLrMwh8Bhh9dmUPrqQK2TTtbiVo=; b=EwDEacVehCszj0X07YUjkXdo8X NDcVj/appYEtgrOwUnC7j8d4GOOaCsC8m2SGEbB8hE9to9mnjG61Vd5ihEzWIOOn7g5jLL/y9onOe o4lr0vzKBf64RKp8MTBIVtPnj8R2fkQdtKf6BV3kmUih7Ac0DkxnpFJEpmkkIFQDTTCc=; Received: from madrid.collaboradmins.com ([46.235.227.194]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1rcLs0-0004DR-MI for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:00 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1708419171; bh=sYUTU/89PFPnPBoR5kfzfYqhAM5p15Bl509BAaBxeuk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HmHkQv2gvTC+PaeihquAQjwDTxxp5HHL0cRccXUySqz6MGmUVlKD7eOE+UF6ItG8P w5YFmrd4YmuOplsQQl4fChrAY3UtXEOzM4UephzZJYyhU4Ura1m8lTcVyEVWI4+/bS ftz1H3ZsBUm4ZWgh6Km+j2FC9DRrCyRuLtso8A5eg0wmZFioQEdF2F9F7YSx7/a3yy Nh8f9eHI5RUK1TRuuj6ArszNWh7XwLzV20lXEHIjkuy/bHe3d7vT2X9wfmUv88+T7e DHiucMpsoUSfrsevokZqH2vNaH22UlAjcHTpXkY8PPo0Zim6UGJoyyb/Ts4mHsErOh dfJXpj2SwKtYA== Received: from eugen-station.. (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: ehristev) by madrid.collaboradmins.com (Postfix) with ESMTPSA id D88183782081; Tue, 20 Feb 2024 08:52:47 +0000 (UTC) To: tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, jaegeuk@kernel.org, chao@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Date: Tue, 20 Feb 2024 10:52:28 +0200 Message-Id: <20240220085235.71132-2-eugen.hristev@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240220085235.71132-1-eugen.hristev@collabora.com> References: <20240220085235.71132-1-eugen.hristev@collabora.com> MIME-Version: 1.0 X-Headers-End: 1rcLs0-0004DR-MI Subject: [f2fs-dev] [PATCH v12 1/8] ext4: Simplify the handling of cached insensitive names X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Eugen Hristev via Linux-f2fs-devel From: Eugen Hristev Reply-To: Eugen Hristev Cc: krisman@suse.de, brauner@kernel.org, jack@suse.cz, Eric Biggers , linux-kernel@vger.kernel.org, eugen.hristev@collabora.com, viro@zeniv.linux.org.uk, kernel@collabora.com, Gabriel Krisman Bertazi Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Gabriel Krisman Bertazi Keeping it as qstr avoids the unnecessary conversion in ext4_match Reviewed-by: Eric Biggers Signed-off-by: Gabriel Krisman Bertazi [eugen.hristev@collabora.com: port to 6.8-rc3] Signed-off-by: Eugen Hristev --- fs/ext4/ext4.h | 2 +- fs/ext4/namei.c | 23 +++++++++++------------ 2 files changed, 12 insertions(+), 13 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 023571f8dd1b..932bae88b4a7 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2508,7 +2508,7 @@ struct ext4_filename { struct fscrypt_str crypto_buf; #endif #if IS_ENABLED(CONFIG_UNICODE) - struct fscrypt_str cf_name; + struct qstr cf_name; #endif }; diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 05b647e6bc19..e554c5a62ba9 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1445,7 +1445,8 @@ static int ext4_ci_compare(const struct inode *parent, const struct qstr *name, int ext4_fname_setup_ci_filename(struct inode *dir, const struct qstr *iname, struct ext4_filename *name) { - struct fscrypt_str *cf_name = &name->cf_name; + struct qstr *cf_name = &name->cf_name; + unsigned char *buf; struct dx_hash_info *hinfo = &name->hinfo; int len; @@ -1455,18 +1456,18 @@ int ext4_fname_setup_ci_filename(struct inode *dir, const struct qstr *iname, return 0; } - cf_name->name = kmalloc(EXT4_NAME_LEN, GFP_NOFS); - if (!cf_name->name) + buf = kmalloc(EXT4_NAME_LEN, GFP_NOFS); + if (!buf) return -ENOMEM; - len = utf8_casefold(dir->i_sb->s_encoding, - iname, cf_name->name, - EXT4_NAME_LEN); + len = utf8_casefold(dir->i_sb->s_encoding, iname, buf, EXT4_NAME_LEN); if (len <= 0) { - kfree(cf_name->name); - cf_name->name = NULL; + kfree(buf); + buf = NULL; } + cf_name->name = buf; cf_name->len = (unsigned) len; + if (!IS_ENCRYPTED(dir)) return 0; @@ -1503,8 +1504,6 @@ static bool ext4_match(struct inode *parent, if (IS_CASEFOLDED(parent) && (!IS_ENCRYPTED(parent) || fscrypt_has_encryption_key(parent))) { if (fname->cf_name.name) { - struct qstr cf = {.name = fname->cf_name.name, - .len = fname->cf_name.len}; if (IS_ENCRYPTED(parent)) { if (fname->hinfo.hash != EXT4_DIRENT_HASH(de) || fname->hinfo.minor_hash != @@ -1513,8 +1512,8 @@ static bool ext4_match(struct inode *parent, return false; } } - return !ext4_ci_compare(parent, &cf, de->name, - de->name_len, true); + return !ext4_ci_compare(parent, &fname->cf_name, + de->name, de->name_len, true); } return !ext4_ci_compare(parent, fname->usr_fname, de->name, de->name_len, false); From patchwork Tue Feb 20 08:52:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 13563610 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id ECD37C48BC3 for ; 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(cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: ehristev) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 4D079378208B; Tue, 20 Feb 2024 08:52:52 +0000 (UTC) To: tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, jaegeuk@kernel.org, chao@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Date: Tue, 20 Feb 2024 10:52:29 +0200 Message-Id: <20240220085235.71132-3-eugen.hristev@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240220085235.71132-1-eugen.hristev@collabora.com> References: <20240220085235.71132-1-eugen.hristev@collabora.com> MIME-Version: 1.0 X-Headers-End: 1rcLs4-0004Dl-Pn Subject: [f2fs-dev] [PATCH v12 2/8] f2fs: Simplify the handling of cached insensitive names X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Eugen Hristev via Linux-f2fs-devel From: Eugen Hristev Reply-To: Eugen Hristev Cc: krisman@suse.de, brauner@kernel.org, jack@suse.cz, Eric Biggers , linux-kernel@vger.kernel.org, eugen.hristev@collabora.com, viro@zeniv.linux.org.uk, kernel@collabora.com, Gabriel Krisman Bertazi Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Gabriel Krisman Bertazi Keeping it as qstr avoids the unnecessary conversion in f2fs_match Reviewed-by: Eric Biggers Signed-off-by: Gabriel Krisman Bertazi [eugen.hristev@collabora.com: port to 6.8-rc3] Signed-off-by: Eugen Hristev --- fs/f2fs/dir.c | 53 ++++++++++++++++++++++++++-------------------- fs/f2fs/f2fs.h | 17 ++++++++++++++- fs/f2fs/recovery.c | 5 +---- 3 files changed, 47 insertions(+), 28 deletions(-) diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index 3f20d94e12f9..f5b65cf36393 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -42,35 +42,49 @@ static unsigned int bucket_blocks(unsigned int level) return 4; } +#if IS_ENABLED(CONFIG_UNICODE) /* If @dir is casefolded, initialize @fname->cf_name from @fname->usr_fname. */ int f2fs_init_casefolded_name(const struct inode *dir, struct f2fs_filename *fname) { -#if IS_ENABLED(CONFIG_UNICODE) struct super_block *sb = dir->i_sb; + unsigned char *buf; + int len; if (IS_CASEFOLDED(dir) && !is_dot_dotdot(fname->usr_fname->name, fname->usr_fname->len)) { - fname->cf_name.name = f2fs_kmem_cache_alloc(f2fs_cf_name_slab, - GFP_NOFS, false, F2FS_SB(sb)); - if (!fname->cf_name.name) + buf = f2fs_kmem_cache_alloc(f2fs_cf_name_slab, + GFP_NOFS, false, F2FS_SB(sb)); + if (!buf) return -ENOMEM; - fname->cf_name.len = utf8_casefold(sb->s_encoding, - fname->usr_fname, - fname->cf_name.name, - F2FS_NAME_LEN); - if ((int)fname->cf_name.len <= 0) { - kmem_cache_free(f2fs_cf_name_slab, fname->cf_name.name); - fname->cf_name.name = NULL; + + len = utf8_casefold(sb->s_encoding, fname->usr_fname, + buf, F2FS_NAME_LEN); + if (len <= 0) { + kmem_cache_free(f2fs_cf_name_slab, buf); if (sb_has_strict_encoding(sb)) return -EINVAL; /* fall back to treating name as opaque byte sequence */ + return 0; } + fname->cf_name.name = buf; + fname->cf_name.len = len; } -#endif + return 0; } +void f2fs_free_casefolded_name(struct f2fs_filename *fname) +{ + unsigned char *buf = (unsigned char *)fname->cf_name.name; + + if (buf) { + kmem_cache_free(f2fs_cf_name_slab, buf); + fname->cf_name.name = NULL; + } +} +#endif /* CONFIG_UNICODE */ + static int __f2fs_setup_filename(const struct inode *dir, const struct fscrypt_name *crypt_name, struct f2fs_filename *fname) @@ -142,12 +156,7 @@ void f2fs_free_filename(struct f2fs_filename *fname) kfree(fname->crypto_buf.name); fname->crypto_buf.name = NULL; #endif -#if IS_ENABLED(CONFIG_UNICODE) - if (fname->cf_name.name) { - kmem_cache_free(f2fs_cf_name_slab, fname->cf_name.name); - fname->cf_name.name = NULL; - } -#endif + f2fs_free_casefolded_name(fname); } static unsigned long dir_block_index(unsigned int level, @@ -235,11 +244,9 @@ static inline int f2fs_match_name(const struct inode *dir, struct fscrypt_name f; #if IS_ENABLED(CONFIG_UNICODE) - if (fname->cf_name.name) { - struct qstr cf = FSTR_TO_QSTR(&fname->cf_name); - - return f2fs_match_ci_name(dir, &cf, de_name, de_name_len); - } + if (fname->cf_name.name) + return f2fs_match_ci_name(dir, &fname->cf_name, + de_name, de_name_len); #endif f.usr_fname = fname->usr_fname; f.disk_name = fname->disk_name; diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 84c9fead3ad4..2ff8e52642ec 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -530,7 +530,7 @@ struct f2fs_filename { * internal operation where usr_fname is also NULL. In all these cases * we fall back to treating the name as an opaque byte sequence. */ - struct fscrypt_str cf_name; + struct qstr cf_name; #endif }; @@ -3533,8 +3533,23 @@ int f2fs_get_tmpfile(struct mnt_idmap *idmap, struct inode *dir, /* * dir.c */ +unsigned char f2fs_get_de_type(struct f2fs_dir_entry *de); +#if IS_ENABLED(CONFIG_UNICODE) int f2fs_init_casefolded_name(const struct inode *dir, struct f2fs_filename *fname); +void f2fs_free_casefolded_name(struct f2fs_filename *fname); +#else +static inline int f2fs_init_casefolded_name(const struct inode *dir, + struct f2fs_filename *fname) +{ + return 0; +} + +static inline void f2fs_free_casefolded_name(struct f2fs_filename *fname) +{ +} +#endif /* CONFIG_UNICODE */ + int f2fs_setup_filename(struct inode *dir, const struct qstr *iname, int lookup, struct f2fs_filename *fname); int f2fs_prepare_lookup(struct inode *dir, struct dentry *dentry, diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index aad1d1a9b3d6..8e8501a3a8e0 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -153,11 +153,8 @@ static int init_recovered_filename(const struct inode *dir, if (err) return err; f2fs_hash_filename(dir, fname); -#if IS_ENABLED(CONFIG_UNICODE) /* Case-sensitive match is fine for recovery */ - kmem_cache_free(f2fs_cf_name_slab, fname->cf_name.name); - fname->cf_name.name = NULL; -#endif + f2fs_free_casefolded_name(fname); } else { f2fs_hash_filename(dir, fname); } From patchwork Tue Feb 20 08:52:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 13563611 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 41705C48BC4 for ; Tue, 20 Feb 2024 08:53:10 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-2.v29.lw.sourceforge.com) by sfs-ml-2.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1rcLsC-0000rz-Gt; Tue, 20 Feb 2024 08:53:09 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-2.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1rcLsA-0000rh-Qk for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:07 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=bBiQr8qNHBW/dz9Wqw2B0oF7xd6Dni/RQbz5CqxkgSU=; b=B6GSU2sGoZWbrVXvmNlX9LoEtE 4AHMkD+uVAKLzXj9yYauYVyyOtuoeYkgfTi3dbdF/wmHA/xt+qjpvuN20XO7/AKIHvoPXWbqUzhPD sLywLza6zwzge5GOz6bJfSCKfpwRMX5p1rv0ykvij9FGcQz9vuS4Jjv2fcmdhPbZ7UJk=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=bBiQr8qNHBW/dz9Wqw2B0oF7xd6Dni/RQbz5CqxkgSU=; b=Is47n4VwjdShkG83UL2bidNKZC YYc3LpX0Gaa6XsLFYMyUyTy8JqoIzRObX5LzPxDgAcwq+L8UyixM5cc3P7Kev55wW223aqwBOqcgx gVFHkhfJNxM1fBmW95k2fF6cBv2zDgrp3nNnYyXQG4+GMP9n8vcqx3gY6wKgz1qKQkZE=; Received: from madrid.collaboradmins.com ([46.235.227.194]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1rcLs9-0004EX-3l for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:07 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1708419180; bh=qz8S7xFJa6xuAqtF97SRmEiApDWkUqTqYZBa3wZStlw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=r2FsOhsDV17dEdnUaHnl/6eCD3lZQNMyYpTmVh7wY+kByukIJ+krZQnvAHwBs/nC2 hckAqCDGtOlKWbPUsChcJyVNIrEiUxOV80Co77FyxiTP6IDYTirX6pMp4f/x0rYgUj TyNCw4MB8BQ1g7I3MjTGPNrHPwoXQmNf17aCnPqCOD7A/LeenllTgTE1S6uBmoEXLp r5YDLgvlukcY/BLfm1sazLzwHxnH4U/B4bT2lU9TRj8efvtQK6RnHNEG52gz+oSSJG WiyFBDLqIq8LULh8LULBfDFx9LHff/d+NnQeFPNoobQnvC/cs2wLaGcQkNh3BuW7P+ Y2u2jQ8oVcOcg== Received: from eugen-station.. (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: ehristev) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 91313378208D; Tue, 20 Feb 2024 08:52:56 +0000 (UTC) To: tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, jaegeuk@kernel.org, chao@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Date: Tue, 20 Feb 2024 10:52:30 +0200 Message-Id: <20240220085235.71132-4-eugen.hristev@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240220085235.71132-1-eugen.hristev@collabora.com> References: <20240220085235.71132-1-eugen.hristev@collabora.com> MIME-Version: 1.0 X-Headers-End: 1rcLs9-0004EX-3l Subject: [f2fs-dev] [PATCH v12 3/8] libfs: Introduce case-insensitive string comparison helper X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Eugen Hristev via Linux-f2fs-devel From: Eugen Hristev Reply-To: Eugen Hristev Cc: krisman@suse.de, brauner@kernel.org, jack@suse.cz, linux-kernel@vger.kernel.org, eugen.hristev@collabora.com, viro@zeniv.linux.org.uk, kernel@collabora.com, Gabriel Krisman Bertazi Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Gabriel Krisman Bertazi generic_ci_match can be used by case-insensitive filesystems to compare strings under lookup with dirents in a case-insensitive way. This function is currently reimplemented by each filesystem supporting casefolding, so this reduces code duplication in filesystem-specific code. Signed-off-by: Gabriel Krisman Bertazi [eugen.hristev@collabora.com: rework to first test the exact match] Signed-off-by: Eugen Hristev --- fs/libfs.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++ include/linux/fs.h | 4 +++ 2 files changed, 89 insertions(+) diff --git a/fs/libfs.c b/fs/libfs.c index bb18884ff20e..65e2fb17a2b6 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -1773,6 +1773,91 @@ static const struct dentry_operations generic_ci_dentry_ops = { .d_hash = generic_ci_d_hash, .d_compare = generic_ci_d_compare, }; + +/** + * generic_ci_match() - Match a name (case-insensitively) with a dirent. + * This is a filesystem helper for comparison with directory entries. + * generic_ci_d_compare should be used in VFS' ->d_compare instead. + * + * @parent: Inode of the parent of the dirent under comparison + * @name: name under lookup. + * @folded_name: Optional pre-folded name under lookup + * @de_name: Dirent name. + * @de_name_len: dirent name length. + * + * Test whether a case-insensitive directory entry matches the filename + * being searched. If @folded_name is provided, it is used instead of + * recalculating the casefold of @name. + * + * Return: > 0 if the directory entry matches, 0 if it doesn't match, or + * < 0 on error. + */ +int generic_ci_match(const struct inode *parent, + const struct qstr *name, + const struct qstr *folded_name, + const u8 *de_name, u32 de_name_len) +{ + const struct super_block *sb = parent->i_sb; + const struct unicode_map *um = sb->s_encoding; + struct fscrypt_str decrypted_name = FSTR_INIT(NULL, de_name_len); + struct qstr dirent = QSTR_INIT(de_name, de_name_len); + int res, match = 0; + + if (IS_ENCRYPTED(parent)) { + const struct fscrypt_str encrypted_name = + FSTR_INIT((u8 *) de_name, de_name_len); + + if (WARN_ON_ONCE(!fscrypt_has_encryption_key(parent))) + return -EINVAL; + + decrypted_name.name = kmalloc(de_name_len, GFP_KERNEL); + if (!decrypted_name.name) + return -ENOMEM; + res = fscrypt_fname_disk_to_usr(parent, 0, 0, &encrypted_name, + &decrypted_name); + if (res < 0) + goto out; + dirent.name = decrypted_name.name; + dirent.len = decrypted_name.len; + } + + /* + * Attempt a case-sensitive match first. It is cheaper and + * should cover most lookups, including all the sane + * applications that expect a case-sensitive filesystem. + * + * This comparison is safe under RCU because the caller + * guarantees the consistency between str and len. See + * __d_lookup_rcu_op_compare() for details. + */ + if (folded_name->name) { + if (dirent.len == folded_name->len && + !memcmp(folded_name->name, dirent.name, dirent.len)) { + match = 1; + goto out; + } + res = utf8_strncasecmp_folded(um, folded_name, &dirent); + } else { + if (dirent.len == name->len && + !memcmp(name->name, dirent.name, dirent.len) && + (!sb_has_strict_encoding(sb) || !utf8_validate(um, name))) { + match = 1; + goto out; + } + res = utf8_strncasecmp(um, name, &dirent); + } + +out: + kfree(decrypted_name.name); + if (match) /* matched by direct comparison */ + return 1; + else if (!res) /* matched by utf8 comparison */ + return 1; + else if (res < 0) /* error on utf8 comparison */ + return res; + return 0; /* no match */ +} +EXPORT_SYMBOL(generic_ci_match); #endif #ifdef CONFIG_FS_ENCRYPTION diff --git a/include/linux/fs.h b/include/linux/fs.h index 820b93b2917f..7af691ff8d44 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3296,6 +3296,10 @@ extern int generic_file_fsync(struct file *, loff_t, loff_t, int); extern int generic_check_addressable(unsigned, u64); extern void generic_set_encrypted_ci_d_ops(struct dentry *dentry); +extern int generic_ci_match(const struct inode *parent, + const struct qstr *name, + const struct qstr *folded_name, + const u8 *de_name, u32 de_name_len); static inline bool sb_has_encoding(const struct super_block *sb) { From patchwork Tue Feb 20 08:52:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 13563612 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7BC0BC48BC3 for ; Tue, 20 Feb 2024 08:53:17 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-4.v29.lw.sourceforge.com) by sfs-ml-4.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1rcLsL-0000DM-0t; Tue, 20 Feb 2024 08:53:17 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-4.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1rcLsI-0000Cy-66 for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:14 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=oktS/MBFoF+x9yONCrKAEawd+NT7G/N3oFpCIujtcCI=; b=QnrIbYwYjNVm2p7Ih6hDQ4CEGi wwscJ6QDiu7OzHTAd4P6FEAkzDMTTBCDiicW9T4KpcHvBE5SX4RNuMhLWjwy7GovYpRkwLLVd7g+V gJub2QaAhQLAdCoN9wLJmwQZSZqr8qfyOU5JHDsHN4WoDpQG7yuWtY1a6ZSm+vOOly14=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=oktS/MBFoF+x9yONCrKAEawd+NT7G/N3oFpCIujtcCI=; b=FPZb7QiB/7vmzklWbZQZtkHbTs CggiLtMxIW0G3gtEnClkjO6uOpkrFRO9375EzHP5zG2Nv+ItM5U3jfOft4IXKlYZ4tPfImrmoj7D0 fzuGUTbrTk5j3ShAPD2u723L0NKZkovI3SnP1u3Bm1JtNd1/U5sRL2BCjBp2kbx+UEls=; Received: from madrid.collaboradmins.com ([46.235.227.194]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1rcLsD-0004F0-AH for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:14 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1708419184; bh=Hp90mLjR44WCv/VB4t8dflfSiAXrxxn0/qF/zsP/e4I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H16jRp/sNexVtn9iSjMmTvR75g9t9Tp7aA51msvJmECvnCgYQfEImMIuQ6yN8JG0+ jX6L6yYjOyY4vXhhnCAXffD6/Lhm6s47fE5u5GYgzQvtZMV56cAwFhNhsX1KDfntNX Wlry5q73PYQNKJEYQdMpv+gAaMBb8q8FJXP0Bf+cps/XszhE7ItxdOH1CHQsXzptiL U3uSjAZBUKGD/UrGR6w93+c2sPOLMJL+hmhK/CUU5GwdBv6qDOVYIKctk0PWeCPKUJ ngPujiw0MIFM6xBpPcUqf2ixFA/ajKZy+x/C+oTUEvHV3II1dZ5iaGC/jYCNyX1G5F gCCZ4YbhJSCCg== Received: from eugen-station.. (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: ehristev) by madrid.collaboradmins.com (Postfix) with ESMTPSA id DA700378208E; Tue, 20 Feb 2024 08:53:00 +0000 (UTC) To: tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, jaegeuk@kernel.org, chao@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Date: Tue, 20 Feb 2024 10:52:31 +0200 Message-Id: <20240220085235.71132-5-eugen.hristev@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240220085235.71132-1-eugen.hristev@collabora.com> References: <20240220085235.71132-1-eugen.hristev@collabora.com> MIME-Version: 1.0 X-Headers-End: 1rcLsD-0004F0-AH Subject: [f2fs-dev] [PATCH v12 4/8] ext4: Reuse generic_ci_match for ci comparisons X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Eugen Hristev via Linux-f2fs-devel From: Eugen Hristev Reply-To: Eugen Hristev Cc: krisman@suse.de, brauner@kernel.org, jack@suse.cz, linux-kernel@vger.kernel.org, eugen.hristev@collabora.com, viro@zeniv.linux.org.uk, kernel@collabora.com, Gabriel Krisman Bertazi Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Gabriel Krisman Bertazi Instead of reimplementing ext4_match_ci, use the new libfs helper. It also adds a comment explaining why fname->cf_name.name must be checked prior to the encryption hash optimization, because that tripped me before. Signed-off-by: Gabriel Krisman Bertazi Signed-off-by: Eugen Hristev --- fs/ext4/namei.c | 91 +++++++++++++++---------------------------------- 1 file changed, 27 insertions(+), 64 deletions(-) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index e554c5a62ba9..6e7af8dc4dde 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1390,58 +1390,6 @@ static void dx_insert_block(struct dx_frame *frame, u32 hash, ext4_lblk_t block) } #if IS_ENABLED(CONFIG_UNICODE) -/* - * Test whether a case-insensitive directory entry matches the filename - * being searched for. If quick is set, assume the name being looked up - * is already in the casefolded form. - * - * Returns: 0 if the directory entry matches, more than 0 if it - * doesn't match or less than zero on error. - */ -static int ext4_ci_compare(const struct inode *parent, const struct qstr *name, - u8 *de_name, size_t de_name_len, bool quick) -{ - const struct super_block *sb = parent->i_sb; - const struct unicode_map *um = sb->s_encoding; - struct fscrypt_str decrypted_name = FSTR_INIT(NULL, de_name_len); - struct qstr entry = QSTR_INIT(de_name, de_name_len); - int ret; - - if (IS_ENCRYPTED(parent)) { - const struct fscrypt_str encrypted_name = - FSTR_INIT(de_name, de_name_len); - - decrypted_name.name = kmalloc(de_name_len, GFP_KERNEL); - if (!decrypted_name.name) - return -ENOMEM; - ret = fscrypt_fname_disk_to_usr(parent, 0, 0, &encrypted_name, - &decrypted_name); - if (ret < 0) - goto out; - entry.name = decrypted_name.name; - entry.len = decrypted_name.len; - } - - if (quick) - ret = utf8_strncasecmp_folded(um, name, &entry); - else - ret = utf8_strncasecmp(um, name, &entry); - if (ret < 0) { - /* Handle invalid character sequence as either an error - * or as an opaque byte sequence. - */ - if (sb_has_strict_encoding(sb)) - ret = -EINVAL; - else if (name->len != entry.len) - ret = 1; - else - ret = !!memcmp(name->name, entry.name, entry.len); - } -out: - kfree(decrypted_name.name); - return ret; -} - int ext4_fname_setup_ci_filename(struct inode *dir, const struct qstr *iname, struct ext4_filename *name) { @@ -1503,20 +1451,35 @@ static bool ext4_match(struct inode *parent, #if IS_ENABLED(CONFIG_UNICODE) if (IS_CASEFOLDED(parent) && (!IS_ENCRYPTED(parent) || fscrypt_has_encryption_key(parent))) { - if (fname->cf_name.name) { - if (IS_ENCRYPTED(parent)) { - if (fname->hinfo.hash != EXT4_DIRENT_HASH(de) || - fname->hinfo.minor_hash != - EXT4_DIRENT_MINOR_HASH(de)) { + int ret; - return false; - } - } - return !ext4_ci_compare(parent, &fname->cf_name, - de->name, de->name_len, true); + /* + * Just checking IS_ENCRYPTED(parent) below is not + * sufficient to decide whether one can use the hash for + * skipping the string comparison, because the key might + * have been added right after + * ext4_fname_setup_ci_filename(). In this case, a hash + * mismatch will be a false negative. Therefore, make + * sure cf_name was properly initialized before + * considering the calculated hash. + */ + if (IS_ENCRYPTED(parent) && fname->cf_name.name && + (fname->hinfo.hash != EXT4_DIRENT_HASH(de) || + fname->hinfo.minor_hash != EXT4_DIRENT_MINOR_HASH(de))) + return false; + + ret = generic_ci_match(parent, fname->usr_fname, + &fname->cf_name, de->name, + de->name_len); + if (ret < 0) { + /* + * Treat comparison errors as not a match. The + * only case where it happens is on a disk + * corruption or ENOMEM. + */ + return false; } - return !ext4_ci_compare(parent, fname->usr_fname, de->name, - de->name_len, false); + return ret; } #endif From patchwork Tue Feb 20 08:52:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 13563613 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8F345C48BC4 for ; Tue, 20 Feb 2024 08:53:17 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-1.v29.lw.sourceforge.com) by sfs-ml-1.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1rcLsK-0001cK-8T; Tue, 20 Feb 2024 08:53:17 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-1.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1rcLsI-0001c2-W9 for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:15 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=mUH8Ldjjxi8it9eaRNAUP8jiOKNg7HpR2OKWq4ySMwo=; b=XOW5jEERkGcWwnjNYbsYZChdsr +U4ijWl1KQr5326erPxStaiwhBcaeD0gtW9KbHUD52HQ2DfiRIkx9ULvCTWNtZ3rroPSD9PkFtnGR JcA9Y+/o1OZUe1ZYzu+GG3kyAwB2/4tUN/1k0s7ixckHa1BEaZwys59Fp4FwHRpXKcCI=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=mUH8Ldjjxi8it9eaRNAUP8jiOKNg7HpR2OKWq4ySMwo=; b=Kkyd4T46oDagxPYtL3gRdVj6En u9bxEdDZEM55itHHzUFPtaSibJgDNOPNaXAlQH4c5CJ3rk0p/voHBcTN9e8P0FNtoH4clnsjP7b6V N59lUYxJnFLfTIjg9OxA/UV9sVy8D/QtkbqeHG7hLDJGWdD/cwiV1dDpA0IY8du8TT70=; Received: from madrid.collaboradmins.com ([46.235.227.194]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1rcLsH-0004FI-Mt for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:15 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1708419188; bh=dzKZXblpWESFyKaff5lcUS9bN5Ok7BHsB49SOtV2pf4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OQGo5d/OjWFVI7q4Vh95ONAjcR0hM1r3UaBTQIWs6xL6Z9omLgKHkJIwqm/syKG9q aY2J95G6+gmbgtjx056voadQsqKItl55ujnixeWnO92C2GmIV70w8zTZZAqwp0RVQP TldUO99vkAa3wNsQMJpKZc4u0jAAEx0yeyKG5174M7dAku94kUb8wFKexA2IzpX8LD AZmnoqXDJJQClOCskOqGERvak/dGwAU6QycUijS8TCUw8S1Elq5z5Lt8Wkz2iLu6Vf RlyuPOMdilVMEFieVY4xi0+fiVdERIfg14r5Z7aKiHJZBefDAYB0dRk1PYO6dzpQSP 7Rh3gGh+7FyWw== Received: from eugen-station.. (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: ehristev) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 0E2F93782093; Tue, 20 Feb 2024 08:53:04 +0000 (UTC) To: tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, jaegeuk@kernel.org, chao@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Date: Tue, 20 Feb 2024 10:52:32 +0200 Message-Id: <20240220085235.71132-6-eugen.hristev@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240220085235.71132-1-eugen.hristev@collabora.com> References: <20240220085235.71132-1-eugen.hristev@collabora.com> MIME-Version: 1.0 X-Headers-End: 1rcLsH-0004FI-Mt Subject: [f2fs-dev] [PATCH v12 5/8] f2fs: Reuse generic_ci_match for ci comparisons X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Eugen Hristev via Linux-f2fs-devel From: Eugen Hristev Reply-To: Eugen Hristev Cc: krisman@suse.de, brauner@kernel.org, jack@suse.cz, Eric Biggers , linux-kernel@vger.kernel.org, eugen.hristev@collabora.com, viro@zeniv.linux.org.uk, kernel@collabora.com, Gabriel Krisman Bertazi Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Gabriel Krisman Bertazi Now that ci_match is part of libfs, make f2fs reuse it instead of having a different implementation. Reviewed-by: Chao Yu Reviewed-by: Eric Biggers Signed-off-by: Gabriel Krisman Bertazi Signed-off-by: Eugen Hristev --- fs/f2fs/dir.c | 58 ++++----------------------------------------------- 1 file changed, 4 insertions(+), 54 deletions(-) diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index f5b65cf36393..7953322b9b9e 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -185,58 +185,6 @@ static struct f2fs_dir_entry *find_in_block(struct inode *dir, return f2fs_find_target_dentry(&d, fname, max_slots); } -#if IS_ENABLED(CONFIG_UNICODE) -/* - * Test whether a case-insensitive directory entry matches the filename - * being searched for. - * - * Returns 1 for a match, 0 for no match, and -errno on an error. - */ -static int f2fs_match_ci_name(const struct inode *dir, const struct qstr *name, - const u8 *de_name, u32 de_name_len) -{ - const struct super_block *sb = dir->i_sb; - const struct unicode_map *um = sb->s_encoding; - struct fscrypt_str decrypted_name = FSTR_INIT(NULL, de_name_len); - struct qstr entry = QSTR_INIT(de_name, de_name_len); - int res; - - if (IS_ENCRYPTED(dir)) { - const struct fscrypt_str encrypted_name = - FSTR_INIT((u8 *)de_name, de_name_len); - - if (WARN_ON_ONCE(!fscrypt_has_encryption_key(dir))) - return -EINVAL; - - decrypted_name.name = kmalloc(de_name_len, GFP_KERNEL); - if (!decrypted_name.name) - return -ENOMEM; - res = fscrypt_fname_disk_to_usr(dir, 0, 0, &encrypted_name, - &decrypted_name); - if (res < 0) - goto out; - entry.name = decrypted_name.name; - entry.len = decrypted_name.len; - } - - res = utf8_strncasecmp_folded(um, name, &entry); - /* - * In strict mode, ignore invalid names. In non-strict mode, - * fall back to treating them as opaque byte sequences. - */ - if (res < 0 && !sb_has_strict_encoding(sb)) { - res = name->len == entry.len && - memcmp(name->name, entry.name, name->len) == 0; - } else { - /* utf8_strncasecmp_folded returns 0 on match */ - res = (res == 0); - } -out: - kfree(decrypted_name.name); - return res; -} -#endif /* CONFIG_UNICODE */ - static inline int f2fs_match_name(const struct inode *dir, const struct f2fs_filename *fname, const u8 *de_name, u32 de_name_len) @@ -245,8 +193,10 @@ static inline int f2fs_match_name(const struct inode *dir, #if IS_ENABLED(CONFIG_UNICODE) if (fname->cf_name.name) - return f2fs_match_ci_name(dir, &fname->cf_name, - de_name, de_name_len); + return generic_ci_match(dir, fname->usr_fname, + &fname->cf_name, + de_name, de_name_len); + #endif f.usr_fname = fname->usr_fname; f.disk_name = fname->disk_name; From patchwork Tue Feb 20 08:52:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 13563614 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2F6F5C48BC3 for ; Tue, 20 Feb 2024 08:53:27 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-4.v29.lw.sourceforge.com) by sfs-ml-4.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1rcLsU-0000F6-QF; Tue, 20 Feb 2024 08:53:26 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-4.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1rcLsT-0000Eq-AO for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:25 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=a10dU96oUgbeeU2HILozQQtbAHEtwkt6EHOQl3WO/6M=; b=JZChYRGecbuBYe8Mck7J2G7OV/ 30u8gBAoNRH6BdZ6xb7OhrXcG9CVRziCublgxb+QfevbPmT3bv11DlTFactJdjNSMIQ0XZ+VIMnv8 q7t5GVA//sj4CMu7LTyTRbrkMkMCieYhp5Et1eUVTkGVq+tVpG5pBgNaWTC7e16hEz9g=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=a10dU96oUgbeeU2HILozQQtbAHEtwkt6EHOQl3WO/6M=; b=ApzTGDAS+TQVsDYU7hnpy7I3IS qVuP13WeaGEMBBzscWLx8l+o7YWzaYrp/tISBB5VUCECtJ9GaFEObRllVcfspMnziE07D98MwRydW qjYZF9qLb1fkxzmQXsAMqeYPmwcRz7pH88OR4wFn9USRGCV4qInegwCSAlvFCdai80qs=; Received: from madrid.collaboradmins.com ([46.235.227.194]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1rcLsR-0004H3-7E for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:25 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1708419193; bh=cVITJNZ35p97HDzRx3PUv0ugSW5S2fLqOWH88XqFex0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rRouZNa9WuyH+2RWTe+Ze9yMxCMI9N+ShmaKvWeh1NHyPiBFohuYsrp+BI4Y6rKXS xAcOVr9u4APwRw6P4xazTNUOPOyAtfIp4B7+sK7HWRPOQpc0dmNOBkY8Ztz9yAXWpL VfjzHrBO/dV9kMLqB33qT0087G4pEIFNvt0taSd/9jKL5SlfMXN1LC+6WghW+aafcd 7QklPcIE0D5RO382XXp8LIto0Nstgeb76lCTZbox6qyIAzRORRj6vhIT+gufCgyFpd JtnFhcAhuamsP4C7FtX4TGoO41pQ28M8AYWPdDZWXBQQXLpfQ2YXJyTvyEGZBLTXZV YnTEWxSd64Sfw== Received: from eugen-station.. (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: ehristev) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 925723782098; Tue, 20 Feb 2024 08:53:09 +0000 (UTC) To: tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, jaegeuk@kernel.org, chao@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Date: Tue, 20 Feb 2024 10:52:33 +0200 Message-Id: <20240220085235.71132-7-eugen.hristev@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240220085235.71132-1-eugen.hristev@collabora.com> References: <20240220085235.71132-1-eugen.hristev@collabora.com> MIME-Version: 1.0 X-Headers-End: 1rcLsR-0004H3-7E Subject: [f2fs-dev] [PATCH v12 6/8] ext4: Log error when lookup of encoded dentry fails X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Eugen Hristev via Linux-f2fs-devel From: Eugen Hristev Reply-To: Eugen Hristev Cc: krisman@suse.de, brauner@kernel.org, jack@suse.cz, Eric Biggers , linux-kernel@vger.kernel.org, eugen.hristev@collabora.com, viro@zeniv.linux.org.uk, kernel@collabora.com, Gabriel Krisman Bertazi Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Gabriel Krisman Bertazi If the volume is in strict mode, ext4_ci_compare can report a broken encoding name. This will not trigger on a bad lookup, which is caught earlier, only if the actual disk name is bad. Reviewed-by: Eric Biggers Signed-off-by: Gabriel Krisman Bertazi Signed-off-by: Eugen Hristev --- fs/ext4/namei.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 6e7af8dc4dde..7d357c417475 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1477,6 +1477,9 @@ static bool ext4_match(struct inode *parent, * only case where it happens is on a disk * corruption or ENOMEM. */ + if (ret == -EINVAL) + EXT4_ERROR_INODE(parent, + "Directory contains filename that is invalid UTF-8"); return false; } return ret; From patchwork Tue Feb 20 08:52:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 13563615 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 85658C48BC4 for ; Tue, 20 Feb 2024 08:53:32 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-3.v29.lw.sourceforge.com) by sfs-ml-3.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1rcLsZ-0003lQ-IC; Tue, 20 Feb 2024 08:53:32 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-3.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1rcLsY-0003lB-54 for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:30 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=5v8Q4bL+GnyxyGiB/xjpiDsZhBzHuD24kApQSma/P+E=; b=JUzMbw5h1YiXxJWu1QNkcAjaQr 2NF0tz9050OzAElA6y9io7jFCt7BRNXdZGjMpRcE1toSOO4vKN72jSfJ5icOrFm4Fmv5qrNueRCxy PqApuKR1UaZFWVBtaNbxq7nfg5FQxlkz0EkGlsFH4ZG6D65tauj4NDBmx+HWY4bpRsFg=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=5v8Q4bL+GnyxyGiB/xjpiDsZhBzHuD24kApQSma/P+E=; b=Lv4WPnVDCXbHgokJWqGhK0pATk YGNr2CfhOpU89EVy+feCHO7CAqStJVDY9gnnrbOXpp0+MxpN78DWI1TJ48n+g+yYMpTE1TK/diRWU DM8oWEdzVuPWgGeNGtl4AKIoPVKcasL71/oLkCxLpf+LbgKu8+ViAiVD1RedqVHgaZt8=; Received: from madrid.collaboradmins.com ([46.235.227.194]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1rcLsW-0004Hh-7q for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:30 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1708419198; bh=hw/qeTCsLdZ3kYNOmC9Du+A6MQKSFpNKhdzd2/uvICE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D74yQCZi+p1kV7dTH8/fZA6LhV3OXvTKZVX6v0EY9vTYa5S0W4Q4Z9EP3lNE/xJQh fOG6iPHJA++//scemL1A9YyK0v8bW1WQ3vOzEn0uVwd9CeNVU8R2M3/vG9nMMZKkSv Yr0WAbShJA82f+Ri/56S4W07TDX8+/I8L1E4dNdmUk2MIyNsoHzzTZrAPJKWgmImSN jk+kIDorbzN5IPVZxmzcZbahh3eEkwxLS+CZiJawQqVe5Q1wbAm3We3aJ6n0ddgnQg WbrBgcFj6Hah3pSBDOhMn+FXkyEjfuueYZFMkgleM/iQc725aMQapNTf9DB+UdjIlP mY/7FeXxIYB5g== Received: from eugen-station.. (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: ehristev) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 01349378209E; Tue, 20 Feb 2024 08:53:13 +0000 (UTC) To: tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, jaegeuk@kernel.org, chao@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Date: Tue, 20 Feb 2024 10:52:34 +0200 Message-Id: <20240220085235.71132-8-eugen.hristev@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240220085235.71132-1-eugen.hristev@collabora.com> References: <20240220085235.71132-1-eugen.hristev@collabora.com> MIME-Version: 1.0 X-Headers-End: 1rcLsW-0004Hh-7q Subject: [f2fs-dev] [PATCH v12 7/8] ext4: Move CONFIG_UNICODE defguards into the code flow X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Eugen Hristev via Linux-f2fs-devel From: Eugen Hristev Reply-To: Eugen Hristev Cc: krisman@suse.de, brauner@kernel.org, jack@suse.cz, Eric Biggers , linux-kernel@vger.kernel.org, eugen.hristev@collabora.com, viro@zeniv.linux.org.uk, kernel@collabora.com, Gabriel Krisman Bertazi Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Gabriel Krisman Bertazi Instead of a bunch of ifdefs, make the unicode built checks part of the code flow where possible, as requested by Torvalds. Reviewed-by: Eric Biggers Signed-off-by: Gabriel Krisman Bertazi [eugen.hristev@collabora.com: port to 6.8-rc3] Signed-off-by: Eugen Hristev --- fs/ext4/crypto.c | 19 +++---------------- fs/ext4/ext4.h | 33 +++++++++++++++++++++------------ fs/ext4/namei.c | 14 +++++--------- fs/ext4/super.c | 4 +--- 4 files changed, 30 insertions(+), 40 deletions(-) diff --git a/fs/ext4/crypto.c b/fs/ext4/crypto.c index 7ae0b61258a7..1d2f8b79529c 100644 --- a/fs/ext4/crypto.c +++ b/fs/ext4/crypto.c @@ -31,12 +31,7 @@ int ext4_fname_setup_filename(struct inode *dir, const struct qstr *iname, ext4_fname_from_fscrypt_name(fname, &name); -#if IS_ENABLED(CONFIG_UNICODE) - err = ext4_fname_setup_ci_filename(dir, iname, fname); - if (err) - ext4_fname_free_filename(fname); -#endif - return err; + return ext4_fname_setup_ci_filename(dir, iname, fname); } int ext4_fname_prepare_lookup(struct inode *dir, struct dentry *dentry, @@ -51,12 +46,7 @@ int ext4_fname_prepare_lookup(struct inode *dir, struct dentry *dentry, ext4_fname_from_fscrypt_name(fname, &name); -#if IS_ENABLED(CONFIG_UNICODE) - err = ext4_fname_setup_ci_filename(dir, &dentry->d_name, fname); - if (err) - ext4_fname_free_filename(fname); -#endif - return err; + return ext4_fname_setup_ci_filename(dir, &dentry->d_name, fname); } void ext4_fname_free_filename(struct ext4_filename *fname) @@ -70,10 +60,7 @@ void ext4_fname_free_filename(struct ext4_filename *fname) fname->usr_fname = NULL; fname->disk_name.name = NULL; -#if IS_ENABLED(CONFIG_UNICODE) - kfree(fname->cf_name.name); - fname->cf_name.name = NULL; -#endif + ext4_fname_free_ci_filename(fname); } static bool uuid_is_zero(__u8 u[16]) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 932bae88b4a7..18362054b59e 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2742,8 +2742,25 @@ ext4_fsblk_t ext4_inode_to_goal_block(struct inode *); #if IS_ENABLED(CONFIG_UNICODE) extern int ext4_fname_setup_ci_filename(struct inode *dir, - const struct qstr *iname, - struct ext4_filename *fname); + const struct qstr *iname, + struct ext4_filename *fname); + +static inline void ext4_fname_free_ci_filename(struct ext4_filename *fname) +{ + kfree(fname->cf_name.name); + fname->cf_name.name = NULL; +} +#else +static inline int ext4_fname_setup_ci_filename(struct inode *dir, + const struct qstr *iname, + struct ext4_filename *fname) +{ + return 0; +} + +static inline void ext4_fname_free_ci_filename(struct ext4_filename *fname) +{ +} #endif /* ext4 encryption related stuff goes here crypto.c */ @@ -2766,16 +2783,11 @@ static inline int ext4_fname_setup_filename(struct inode *dir, int lookup, struct ext4_filename *fname) { - int err = 0; fname->usr_fname = iname; fname->disk_name.name = (unsigned char *) iname->name; fname->disk_name.len = iname->len; -#if IS_ENABLED(CONFIG_UNICODE) - err = ext4_fname_setup_ci_filename(dir, iname, fname); -#endif - - return err; + return ext4_fname_setup_ci_filename(dir, iname, fname); } static inline int ext4_fname_prepare_lookup(struct inode *dir, @@ -2787,10 +2799,7 @@ static inline int ext4_fname_prepare_lookup(struct inode *dir, static inline void ext4_fname_free_filename(struct ext4_filename *fname) { -#if IS_ENABLED(CONFIG_UNICODE) - kfree(fname->cf_name.name); - fname->cf_name.name = NULL; -#endif + ext4_fname_free_ci_filename(fname); } static inline int ext4_ioctl_get_encryption_pwsalt(struct file *filp, diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 7d357c417475..822bd16f76fa 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1835,8 +1835,7 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi } } -#if IS_ENABLED(CONFIG_UNICODE) - if (!inode && IS_CASEFOLDED(dir)) { + if (IS_ENABLED(CONFIG_UNICODE) && !inode && IS_CASEFOLDED(dir)) { /* Eventually we want to call d_add_ci(dentry, NULL) * for negative dentries in the encoding case as * well. For now, prevent the negative dentry @@ -1844,7 +1843,7 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi */ return NULL; } -#endif + return d_splice_alias(inode, dentry); } @@ -3174,16 +3173,14 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry) ext4_fc_track_unlink(handle, dentry); retval = ext4_mark_inode_dirty(handle, dir); -#if IS_ENABLED(CONFIG_UNICODE) /* VFS negative dentries are incompatible with Encoding and * Case-insensitiveness. Eventually we'll want avoid * invalidating the dentries here, alongside with returning the * negative dentries at ext4_lookup(), when it is better * supported by the VFS for the CI case. */ - if (IS_CASEFOLDED(dir)) + if (IS_ENABLED(CONFIG_UNICODE) && IS_CASEFOLDED(dir)) d_invalidate(dentry); -#endif end_rmdir: brelse(bh); @@ -3285,16 +3282,15 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry) goto out_trace; retval = __ext4_unlink(dir, &dentry->d_name, d_inode(dentry), dentry); -#if IS_ENABLED(CONFIG_UNICODE) + /* VFS negative dentries are incompatible with Encoding and * Case-insensitiveness. Eventually we'll want avoid * invalidating the dentries here, alongside with returning the * negative dentries at ext4_lookup(), when it is better * supported by the VFS for the CI case. */ - if (IS_CASEFOLDED(dir)) + if (IS_ENABLED(CONFIG_UNICODE) && IS_CASEFOLDED(dir)) d_invalidate(dentry); -#endif out_trace: trace_ext4_unlink_exit(dentry, retval); diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 0f931d0c227d..933a9218c20c 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3609,14 +3609,12 @@ int ext4_feature_set_ok(struct super_block *sb, int readonly) return 0; } -#if !IS_ENABLED(CONFIG_UNICODE) - if (ext4_has_feature_casefold(sb)) { + if (!IS_ENABLED(CONFIG_UNICODE) && ext4_has_feature_casefold(sb)) { ext4_msg(sb, KERN_ERR, "Filesystem with casefold feature cannot be " "mounted without CONFIG_UNICODE"); return 0; } -#endif if (readonly) return 1; From patchwork Tue Feb 20 08:52:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 13563616 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A12AEC48BC4 for ; Tue, 20 Feb 2024 08:53:43 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-1.v29.lw.sourceforge.com) by sfs-ml-1.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1rcLsk-0001l3-1b; Tue, 20 Feb 2024 08:53:43 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-1.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1rcLsb-0001j2-T0 for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:34 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=z/SBBNB2BmDGSCUdS+DWjObbKH1XusfBGNWAepodCdA=; b=K1FXp05WqQg4g37qO+HnCbPbAe dmZeAGYVnbrEEqmYmRgK0nOEaeICd74YjesDp6JdYqAUU/tT/YtQhzd3SfHkM9zVN43UVSysjyWai fr4qlg9iMzWvJawgFHjan6LlM+qbMwTzyVDExE+I9Wqv04T0W3SxGxPUPXAd2h1Wqd0M=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=z/SBBNB2BmDGSCUdS+DWjObbKH1XusfBGNWAepodCdA=; b=caQY03cl7NzQblcmwJmQnAoO/I fxTG2JnGUCNsHKlJU5+oP2419vj/yFow75TvponkZxN2bqOqSGPbYpaantphOLUo6LmccKDPn+Wio Vyee1Ul96oDIKyAEqHiOtW2LEWbok/g5Q/O5O6uF6Fh7wKpyj5DcscA7bLeeoHemfJ8E=; Received: from madrid.collaboradmins.com ([46.235.227.194]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1rcLsa-0004Ib-Kg for linux-f2fs-devel@lists.sourceforge.net; Tue, 20 Feb 2024 08:53:34 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1708419202; bh=PJX9nxRLEeoQwdUnmOqN3H2dctwppjpelMENczAYtJo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QISnZzZ7KXVGg1T7oPWsyGpge3L8xRwxFPHEU8reETwgOv3wT68lfYY0n71LieToc teQ2of1OPiELpnTUYlZojXRftIMXGdx+MOlrimcQLKwzgI9+XCV1tT0apbTZwGL08N VfW3i6DbE/S2jPaiVGjNfDgYwrLeePKdTsg+wUe6xxy7nc7EEuiGgidc+Q19BgDU/l h4UBJE/usHSrJ01gILnP8cuJtVCLgBlr6c32kdK9lEYocJoGXGFBh0hdg+WO/YODv3 1PR9g9EB6gz/pMt6vvS3+XaEIsNUAOXT8G12T6aYTG3qMP2DN9c1M1QN5vbMPiNPei IHGG5dcC8XQIQ== Received: from eugen-station.. (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: ehristev) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 027D837820A1; Tue, 20 Feb 2024 08:53:18 +0000 (UTC) To: tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, jaegeuk@kernel.org, chao@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Date: Tue, 20 Feb 2024 10:52:35 +0200 Message-Id: <20240220085235.71132-9-eugen.hristev@collabora.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240220085235.71132-1-eugen.hristev@collabora.com> References: <20240220085235.71132-1-eugen.hristev@collabora.com> MIME-Version: 1.0 X-Headers-End: 1rcLsa-0004Ib-Kg Subject: [f2fs-dev] [PATCH v12 8/8] f2fs: Move CONFIG_UNICODE defguards into the code flow X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Eugen Hristev via Linux-f2fs-devel From: Eugen Hristev Reply-To: Eugen Hristev Cc: krisman@suse.de, brauner@kernel.org, jack@suse.cz, Eric Biggers , linux-kernel@vger.kernel.org, eugen.hristev@collabora.com, viro@zeniv.linux.org.uk, kernel@collabora.com, Gabriel Krisman Bertazi Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Gabriel Krisman Bertazi Instead of a bunch of ifdefs, make the unicode built checks part of the code flow where possible, as requested by Torvalds. Reviewed-by: Eric Biggers Reviewed-by: Chao Yu Signed-off-by: Gabriel Krisman Bertazi [eugen.hristev@collabora.com: port to 6.8-rc3] Signed-off-by: Eugen Hristev --- fs/f2fs/namei.c | 10 ++++------ fs/f2fs/super.c | 8 ++++---- 2 files changed, 8 insertions(+), 10 deletions(-) diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index ba11298b7837..c317bfd1c344 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -577,8 +577,7 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, goto out_iput; } out_splice: -#if IS_ENABLED(CONFIG_UNICODE) - if (!inode && IS_CASEFOLDED(dir)) { + if (IS_ENABLED(CONFIG_UNICODE) && !inode && IS_CASEFOLDED(dir)) { /* Eventually we want to call d_add_ci(dentry, NULL) * for negative dentries in the encoding case as * well. For now, prevent the negative dentry @@ -587,7 +586,7 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, trace_f2fs_lookup_end(dir, dentry, ino, err); return NULL; } -#endif + new = d_splice_alias(inode, dentry); trace_f2fs_lookup_end(dir, !IS_ERR_OR_NULL(new) ? new : dentry, ino, IS_ERR(new) ? PTR_ERR(new) : err); @@ -640,16 +639,15 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry) f2fs_delete_entry(de, page, dir, inode); f2fs_unlock_op(sbi); -#if IS_ENABLED(CONFIG_UNICODE) /* VFS negative dentries are incompatible with Encoding and * Case-insensitiveness. Eventually we'll want avoid * invalidating the dentries here, alongside with returning the * negative dentries at f2fs_lookup(), when it is better * supported by the VFS for the CI case. */ - if (IS_CASEFOLDED(dir)) + if (IS_ENABLED(CONFIG_UNICODE) && IS_CASEFOLDED(dir)) d_invalidate(dentry); -#endif + if (IS_DIRSYNC(dir)) f2fs_sync_fs(sbi->sb, 1); fail: diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 1b718bebfaa1..07c54981cb6b 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -312,7 +312,7 @@ struct kmem_cache *f2fs_cf_name_slab; static int __init f2fs_create_casefold_cache(void) { f2fs_cf_name_slab = f2fs_kmem_cache_create("f2fs_casefolded_name", - F2FS_NAME_LEN); + F2FS_NAME_LEN); return f2fs_cf_name_slab ? 0 : -ENOMEM; } @@ -1360,13 +1360,13 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount) return -EINVAL; } #endif -#if !IS_ENABLED(CONFIG_UNICODE) - if (f2fs_sb_has_casefold(sbi)) { + + if (!IS_ENABLED(CONFIG_UNICODE) && f2fs_sb_has_casefold(sbi)) { f2fs_err(sbi, "Filesystem with casefold feature cannot be mounted without CONFIG_UNICODE"); return -EINVAL; } -#endif + /* * The BLKZONED feature indicates that the drive was formatted with * zone alignment optimization. This is optional for host-aware