From patchwork Sat Oct 12 08:55:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Pali_Roh=C3=A1r?= X-Patchwork-Id: 13834085 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A7B7D14A092; Sat, 12 Oct 2024 08:55:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728723345; cv=none; b=ESRv40BX2bvBTihEtGN63C2RZY3JyPRanADlkjEqPVhQgjYoOhJd99jER5IbKpg5xeRgpphgbddfshVgF428qQ+nAe09uu/gsV85Q+mXnMc6f9xSj1+RUbC6rpUdMiBXSpwG1MwADfTd8j4uSSYK5hIbAsi93NqLYTgDkHxxj6I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728723345; c=relaxed/simple; bh=2leM15kk/Vs6N9tTsC8o3+vg/CPabJBZtZdvUeCLCuA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=piUyexr7TPoc5ppHiKABo3pwsXgId4Oh5l3xCXmPk/x04heg+4P6m0ZRaFSLqsftYsNOdeHkFe5UMpqtp0WPCzEy9djv9nsTPG2J1mKTFufDWcJ32LplsT+xV6RsKz4LoRfsp4pNf/9HCVDlVETno7W7Aeir46U2IhPZkVeCOfI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QTbjGVTx; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QTbjGVTx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 139BBC4CEC6; Sat, 12 Oct 2024 08:55:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728723345; bh=2leM15kk/Vs6N9tTsC8o3+vg/CPabJBZtZdvUeCLCuA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QTbjGVTxzCa7mNCouu5xO8ACM6yH+PBNswt373y9vZylfvFZhs2c+nrRFsuZOmfIO lhbzVho0NY+Xz7EgFEF51Oz4udurHrIOz1Zv+akkTuTI6ccn987wdPYhxw1sLcbFB5 nPMdxPYaLcYdgZiMkYJStbqyCNZqeqN09R8EXELH43GSeHHcBrTdcxUZnwcEHBq884 LIoXlqd0Rgb6jQfV2x+QVVgm0puo7Yct2XtU/Ec6RhwfH4OWV3u0BWnUmB+NR8J2y3 ahT9ljFP69zorgcOlasDNnSdiAXxUVARV+TIL8jF4tRoWzkhb4Tklf7rVPMHfTQixF JDovbdTkczSPw== Received: by pali.im (Postfix) id 4D1F07BD; Sat, 12 Oct 2024 10:55:39 +0200 (CEST) From: =?utf-8?q?Pali_Roh=C3=A1r?= To: Steve French , Paulo Alcantara , Ronnie Sahlberg Cc: linux-cifs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/7] cifs: Add mount option -o reparse=none Date: Sat, 12 Oct 2024 10:55:37 +0200 Message-Id: <20241012085537.652-1-pali@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241012085252.560-1-pali@kernel.org> References: <20241012085252.560-1-pali@kernel.org> Precedence: bulk X-Mailing-List: linux-cifs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This new mount option allows to completely disable creating new reparse points. When -o sfu or -o mfsymlinks or -o symlink= is not specified then creating any special file (fifo, socket, symlink, block and char) will fail with -EOPNOTSUPP error. Signed-off-by: Pali Rohár --- fs/smb/client/cifsglob.h | 3 +++ fs/smb/client/fs_context.c | 8 +++++++- fs/smb/client/fs_context.h | 1 + 3 files changed, 11 insertions(+), 1 deletion(-) diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h index f419d20f6c38..dcee43889358 100644 --- a/fs/smb/client/cifsglob.h +++ b/fs/smb/client/cifsglob.h @@ -154,6 +154,7 @@ enum securityEnum { }; enum cifs_reparse_type { + CIFS_REPARSE_TYPE_NONE, CIFS_REPARSE_TYPE_NFS, CIFS_REPARSE_TYPE_WSL, CIFS_REPARSE_TYPE_DEFAULT = CIFS_REPARSE_TYPE_NFS, @@ -162,6 +163,8 @@ enum cifs_reparse_type { static inline const char *cifs_reparse_type_str(enum cifs_reparse_type type) { switch (type) { + case CIFS_REPARSE_TYPE_NONE: + return "none"; case CIFS_REPARSE_TYPE_NFS: return "nfs"; case CIFS_REPARSE_TYPE_WSL: diff --git a/fs/smb/client/fs_context.c b/fs/smb/client/fs_context.c index 6bd4a5e61342..d68db6ac5f73 100644 --- a/fs/smb/client/fs_context.c +++ b/fs/smb/client/fs_context.c @@ -304,6 +304,7 @@ cifs_parse_cache_flavor(struct fs_context *fc, char *value, struct smb3_fs_conte static const match_table_t reparse_flavor_tokens = { { Opt_reparse_default, "default" }, + { Opt_reparse_none, "none" }, { Opt_reparse_nfs, "nfs" }, { Opt_reparse_wsl, "wsl" }, { Opt_reparse_err, NULL }, @@ -318,6 +319,9 @@ static int parse_reparse_flavor(struct fs_context *fc, char *value, case Opt_reparse_default: ctx->reparse_type = CIFS_REPARSE_TYPE_DEFAULT; break; + case Opt_reparse_none: + ctx->reparse_type = CIFS_REPARSE_TYPE_NONE; + break; case Opt_reparse_nfs: ctx->reparse_type = CIFS_REPARSE_TYPE_NFS; break; @@ -1713,8 +1717,10 @@ enum cifs_symlink_type get_cifs_symlink_type(struct cifs_sb_info *cifs_sb) return CIFS_SYMLINK_TYPE_SFU; else if (cifs_sb->ctx->linux_ext && !cifs_sb->ctx->no_linux_ext) return CIFS_SYMLINK_TYPE_UNIX; - else + else if (cifs_sb->ctx->reparse_type != CIFS_REPARSE_TYPE_NONE) return CIFS_SYMLINK_TYPE_NATIVE; + else + return CIFS_SYMLINK_TYPE_NONE; } else { return cifs_sb->ctx->symlink_type; } diff --git a/fs/smb/client/fs_context.h b/fs/smb/client/fs_context.h index 3bcf20495fea..5f306f581fd1 100644 --- a/fs/smb/client/fs_context.h +++ b/fs/smb/client/fs_context.h @@ -43,6 +43,7 @@ enum { enum cifs_reparse_parm { Opt_reparse_default, + Opt_reparse_none, Opt_reparse_nfs, Opt_reparse_wsl, Opt_reparse_err