From patchwork Thu Sep 22 14:33:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Namjae Jeon X-Patchwork-Id: 12985324 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A0800C6FA82 for ; Thu, 22 Sep 2022 14:34:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231688AbiIVOec (ORCPT ); Thu, 22 Sep 2022 10:34:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57084 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231806AbiIVOeD (ORCPT ); Thu, 22 Sep 2022 10:34:03 -0400 Received: from mail-pj1-f45.google.com (mail-pj1-f45.google.com [209.85.216.45]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE8F6F6F49 for ; Thu, 22 Sep 2022 07:34:01 -0700 (PDT) Received: by mail-pj1-f45.google.com with SMTP id d64-20020a17090a6f4600b00202ce056566so2540068pjk.4 for ; Thu, 22 Sep 2022 07:34:01 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date; bh=uJJAV8vizUHtC9PWZrZW9lCNEp+Em+LxtnrW/IZYfsE=; b=PTQdNfU7cXfkIkALnLqWY2nsMlrLSoLOLdYuP27IZ8h4lacZPervUGlEhlP7QtlD15 vyMfBFxV7xYQri2UH1uX+zpGnJI2R0F4tvE7p0/XL9p/hyUO5rNR9zRH2dRRrL2sn4LG hxK+dcO6AnkiTBjm1ha8h4Lgh8NyijeRriCrvp3bDWSKHoZHUQncM6m8tGdo6+q7P+VR jEWm6RG3yaTr8aZH1VZxefk2dqADAz1un3SpTLk53wwDpsZ0qMZ8hxyYVY8474Gq5WyM R/chLDvxE38gTpkLwo6Fp3mJo5PEErCJYSeQKf5bbNULMWW07la/Ke9ST6f14annYyod jyYw== X-Gm-Message-State: ACrzQf1YxyJJpiPj0I12foqvZWSj9QMn9WQVrJWP/CdgrUiwfYG/EBXT OdOacv6IFkyKhQP1MrP0hfod2OTl8eY= X-Google-Smtp-Source: AMsMyM7vzr5EX+ze4PsoafX1tSYMIKiepoKM/myP8BlWyo7MqHRLsrePeMUgt9JmEzNajDjeRsqwTg== X-Received: by 2002:a17:902:f64d:b0:178:a963:d400 with SMTP id m13-20020a170902f64d00b00178a963d400mr3716035plg.6.1663857240917; Thu, 22 Sep 2022 07:34:00 -0700 (PDT) Received: from localhost.localdomain ([211.49.23.9]) by smtp.gmail.com with ESMTPSA id iw20-20020a170903045400b00177324a7862sm4132808plb.45.2022.09.22.07.33.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Sep 2022 07:34:00 -0700 (PDT) From: Namjae Jeon To: linux-cifs@vger.kernel.org Cc: smfrench@gmail.com, senozhatsky@chromium.org, tom@talpey.com, atteh.mailbox@gmail.com, Namjae Jeon Subject: [PATCH v2 1/3] ksmbd: change security id to the one samba used for posix extension Date: Thu, 22 Sep 2022 23:33:36 +0900 Message-Id: <20220922143338.10368-1-linkinjeon@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Samba set SIDOWNER and SIDUNIX_GROUP in create posix context and set SIDUNIX_USER/GROUP in other sids for posix extension. This patch change security id to the one samba used. Signed-off-by: Namjae Jeon --- v2: - add the comments for Datalenth and SidBuffer. fs/ksmbd/oplock.c | 17 ++++++++++++++--- fs/ksmbd/smb2pdu.c | 9 +++++++-- fs/ksmbd/smb2pdu.h | 6 ++++-- 3 files changed, 25 insertions(+), 7 deletions(-) diff --git a/fs/ksmbd/oplock.c b/fs/ksmbd/oplock.c index 2e56dac1fa6e..7c890daec2ba 100644 --- a/fs/ksmbd/oplock.c +++ b/fs/ksmbd/oplock.c @@ -1616,7 +1616,11 @@ void create_posix_rsp_buf(char *cc, struct ksmbd_file *fp) memset(buf, 0, sizeof(struct create_posix_rsp)); buf->ccontext.DataOffset = cpu_to_le16(offsetof (struct create_posix_rsp, nlink)); - buf->ccontext.DataLength = cpu_to_le32(52); + /* + * DataLength = nlink(4) + reparse_tag(4) + mode(4) + + * domain sid(28) + unix group sid(16). + */ + buf->ccontext.DataLength = cpu_to_le32(56); buf->ccontext.NameOffset = cpu_to_le16(offsetof (struct create_posix_rsp, Name)); buf->ccontext.NameLength = cpu_to_le16(POSIX_CTXT_DATA_LEN); @@ -1641,10 +1645,17 @@ void create_posix_rsp_buf(char *cc, struct ksmbd_file *fp) buf->nlink = cpu_to_le32(inode->i_nlink); buf->reparse_tag = cpu_to_le32(fp->volatile_id); buf->mode = cpu_to_le32(inode->i_mode); + /* + * SidBuffer(44) contain two sids(Domain sid(28), UNIX group sid(16)). + * Domain sid(28) = revision(1) + num_subauth(1) + authority(6) + + * sub_auth(4 * 4(num_subauth)) + RID(4). + * UNIX group id(16) = revision(1) + num_subauth(1) + authority(6) + + * sub_auth(4 * 1(num_subauth)) + RID(4). + */ id_to_sid(from_kuid_munged(&init_user_ns, vfsuid_into_kuid(vfsuid)), - SIDNFS_USER, (struct smb_sid *)&buf->SidBuffer[0]); + SIDOWNER, (struct smb_sid *)&buf->SidBuffer[0]); id_to_sid(from_kgid_munged(&init_user_ns, vfsgid_into_kgid(vfsgid)), - SIDNFS_GROUP, (struct smb_sid *)&buf->SidBuffer[20]); + SIDUNIX_GROUP, (struct smb_sid *)&buf->SidBuffer[28]); } /* diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c index f33a04e9e458..bb19c9d1de78 100644 --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -3572,10 +3572,15 @@ static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level, FILE_ATTRIBUTE_DIRECTORY_LE : FILE_ATTRIBUTE_ARCHIVE_LE; if (d_info->hide_dot_file && d_info->name[0] == '.') posix_info->DosAttributes |= FILE_ATTRIBUTE_HIDDEN_LE; + /* + * SidBuffer(32) contain two sids(Domain sid(16), UNIX group sid(16)). + * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) + + * sub_auth(4 * 1(num_subauth)) + RID(4). + */ id_to_sid(from_kuid_munged(&init_user_ns, ksmbd_kstat->kstat->uid), - SIDNFS_USER, (struct smb_sid *)&posix_info->SidBuffer[0]); + SIDUNIX_USER, (struct smb_sid *)&posix_info->SidBuffer[0]); id_to_sid(from_kgid_munged(&init_user_ns, ksmbd_kstat->kstat->gid), - SIDNFS_GROUP, (struct smb_sid *)&posix_info->SidBuffer[20]); + SIDUNIX_GROUP, (struct smb_sid *)&posix_info->SidBuffer[16]); memcpy(posix_info->name, conv_name, conv_len); posix_info->name_len = cpu_to_le32(conv_len); posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset); diff --git a/fs/ksmbd/smb2pdu.h b/fs/ksmbd/smb2pdu.h index af455278d005..2eb6b819c89d 100644 --- a/fs/ksmbd/smb2pdu.h +++ b/fs/ksmbd/smb2pdu.h @@ -158,7 +158,8 @@ struct create_posix_rsp { __le32 nlink; __le32 reparse_tag; __le32 mode; - u8 SidBuffer[40]; + /* SidBuffer contain two sids(Domain sid(28), UNIX group sid(16)) */ + u8 SidBuffer[44]; } __packed; struct smb2_buffer_desc_v1 { @@ -439,7 +440,8 @@ struct smb2_posix_info { __le32 HardLinks; __le32 ReparseTag; __le32 Mode; - u8 SidBuffer[40]; + /* SidBuffer contain two sids (UNIX user sid(16), UNIX group sid(16)) */ + u8 SidBuffer[32]; __le32 name_len; u8 name[1]; /* From patchwork Thu Sep 22 14:33:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Namjae Jeon X-Patchwork-Id: 12985325 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A0DDEC6FA82 for ; Thu, 22 Sep 2022 14:34:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231484AbiIVOeg (ORCPT ); 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Thu, 22 Sep 2022 07:34:04 -0700 (PDT) Received: from localhost.localdomain ([211.49.23.9]) by smtp.gmail.com with ESMTPSA id iw20-20020a170903045400b00177324a7862sm4132808plb.45.2022.09.22.07.34.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Sep 2022 07:34:03 -0700 (PDT) From: Namjae Jeon To: linux-cifs@vger.kernel.org Cc: smfrench@gmail.com, senozhatsky@chromium.org, tom@talpey.com, atteh.mailbox@gmail.com, Namjae Jeon Subject: [PATCH v2 2/3] ksmbd: set file permission mode to match Samba server posix extension behavior Date: Thu, 22 Sep 2022 23:33:37 +0900 Message-Id: <20220922143338.10368-2-linkinjeon@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220922143338.10368-1-linkinjeon@kernel.org> References: <20220922143338.10368-1-linkinjeon@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Set file permission mode to match Samba server posix extension behavior. Signed-off-by: Namjae Jeon --- v2: - update patch description with the one Tom suggested. fs/ksmbd/oplock.c | 2 +- fs/ksmbd/smb2pdu.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/ksmbd/oplock.c b/fs/ksmbd/oplock.c index 7c890daec2ba..d7d47b82451d 100644 --- a/fs/ksmbd/oplock.c +++ b/fs/ksmbd/oplock.c @@ -1644,7 +1644,7 @@ void create_posix_rsp_buf(char *cc, struct ksmbd_file *fp) buf->nlink = cpu_to_le32(inode->i_nlink); buf->reparse_tag = cpu_to_le32(fp->volatile_id); - buf->mode = cpu_to_le32(inode->i_mode); + buf->mode = cpu_to_le32(inode->i_mode & 0777); /* * SidBuffer(44) contain two sids(Domain sid(28), UNIX group sid(16)). * Domain sid(28) = revision(1) + num_subauth(1) + authority(6) + diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c index bb19c9d1de78..0605e18bd998 100644 --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -3565,7 +3565,7 @@ static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level, posix_info->AllocationSize = cpu_to_le64(ksmbd_kstat->kstat->blocks << 9); posix_info->DeviceId = cpu_to_le32(ksmbd_kstat->kstat->rdev); posix_info->HardLinks = cpu_to_le32(ksmbd_kstat->kstat->nlink); - posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode); + posix_info->Mode = cpu_to_le32(ksmbd_kstat->kstat->mode & 0777); posix_info->Inode = cpu_to_le64(ksmbd_kstat->kstat->ino); posix_info->DosAttributes = S_ISDIR(ksmbd_kstat->kstat->mode) ? @@ -4737,7 +4737,7 @@ static int find_file_posix_info(struct smb2_query_info_rsp *rsp, file_info->EndOfFile = cpu_to_le64(inode->i_size); file_info->AllocationSize = cpu_to_le64(inode->i_blocks << 9); file_info->HardLinks = cpu_to_le32(inode->i_nlink); - file_info->Mode = cpu_to_le32(inode->i_mode); + file_info->Mode = cpu_to_le32(inode->i_mode & 0777); file_info->DeviceId = cpu_to_le32(inode->i_rdev); rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb311_posix_qinfo)); From patchwork Thu Sep 22 14:33:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Namjae Jeon X-Patchwork-Id: 12985326 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21921C6FA86 for ; Thu, 22 Sep 2022 14:34:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231972AbiIVOel (ORCPT ); Thu, 22 Sep 2022 10:34:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55572 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231888AbiIVOeQ (ORCPT ); Thu, 22 Sep 2022 10:34:16 -0400 Received: from mail-pf1-f178.google.com (mail-pf1-f178.google.com [209.85.210.178]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DD431F8591 for ; Thu, 22 Sep 2022 07:34:08 -0700 (PDT) Received: by mail-pf1-f178.google.com with SMTP id b75so9496533pfb.7 for ; Thu, 22 Sep 2022 07:34:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=RP8wpP2tiY8mCPi0wiOomya5fP2TpXSFaew45OqQAxI=; b=K3KWcLAhvuHpNBZpcZZLexYozhMN5jFaoAWbpIHhEeJKGoXeLYzz4Xak0iJX54m20q FlXMVdVUQ8odXEcqjzRZkCuyBXvY1mLzombtbS/1ueBILZrz2JJK8emFC4KoRshHOLFo HeJy7qJVUs9ko1zgFME+pSngz1WR1K4rd8UYIgbB82utpYPu3Is+L1iedlMetimldMe2 yfsEgtqHaylMqjUauS69jhdgEzClYpCtadWzNQ9toSVBCAuUZS7fPj4Ika99qMfRWZHh jU/tiP07VkXPrE9+j8YAq4VS0l0VBSyAak6C+938Laqs5+Pf1lhHdHw4AnhhxZioL7z6 /1QQ== X-Gm-Message-State: ACrzQf21mGb0ZldpcnHHzib+0Kb3gf/Li3geXIS8edOreWORgsY7AQC8 uM6syS997IPiwl1Y95oLmZlt3sScKEM= X-Google-Smtp-Source: AMsMyM7VMpGgvGDyFph30auR0BfgSbwpr8aAHqoKfN5A2DDcpxdnu4c2mV2vdE9qd1qOW8M65DayWw== X-Received: by 2002:a05:6a00:9a7:b0:54c:27c4:3ad6 with SMTP id u39-20020a056a0009a700b0054c27c43ad6mr4072690pfg.9.1663857247409; Thu, 22 Sep 2022 07:34:07 -0700 (PDT) Received: from localhost.localdomain ([211.49.23.9]) by smtp.gmail.com with ESMTPSA id iw20-20020a170903045400b00177324a7862sm4132808plb.45.2022.09.22.07.34.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Sep 2022 07:34:06 -0700 (PDT) From: Namjae Jeon To: linux-cifs@vger.kernel.org Cc: smfrench@gmail.com, senozhatsky@chromium.org, tom@talpey.com, atteh.mailbox@gmail.com, Namjae Jeon Subject: [PATCH v2 3/3] ksmbd: fill sids in SMB_FIND_FILE_POSIX_INFO response Date: Thu, 22 Sep 2022 23:33:38 +0900 Message-Id: <20220922143338.10368-3-linkinjeon@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220922143338.10368-1-linkinjeon@kernel.org> References: <20220922143338.10368-1-linkinjeon@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org This patch fill missing sids in SMB_FIND_FILE_POSIX_INFO response. Signed-off-by: Namjae Jeon --- v2: - add the comment for Sids. fs/ksmbd/smb2pdu.c | 26 ++++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-) diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c index 0605e18bd998..6f48b6331bfc 100644 --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -4722,7 +4722,11 @@ static int find_file_posix_info(struct smb2_query_info_rsp *rsp, { struct smb311_posix_qinfo *file_info; struct inode *inode = file_inode(fp->filp); + struct user_namespace *user_ns = file_mnt_user_ns(fp->filp); + vfsuid_t vfsuid = i_uid_into_vfsuid(user_ns, inode); + vfsgid_t vfsgid = i_gid_into_vfsgid(user_ns, inode); u64 time; + int out_buf_len = sizeof(struct smb311_posix_qinfo) + 32; file_info = (struct smb311_posix_qinfo *)rsp->Buffer; file_info->CreationTime = cpu_to_le64(fp->create_time); @@ -4739,10 +4743,20 @@ static int find_file_posix_info(struct smb2_query_info_rsp *rsp, file_info->HardLinks = cpu_to_le32(inode->i_nlink); file_info->Mode = cpu_to_le32(inode->i_mode & 0777); file_info->DeviceId = cpu_to_le32(inode->i_rdev); - rsp->OutputBufferLength = - cpu_to_le32(sizeof(struct smb311_posix_qinfo)); - inc_rfc1001_len(rsp_org, sizeof(struct smb311_posix_qinfo)); - return 0; + + /* + * Sids(32) contain two sids(Domain sid(16), UNIX group sid(16)). + * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) + + * sub_auth(4 * 1(num_subauth)) + RID(4). + */ + id_to_sid(from_kuid_munged(&init_user_ns, vfsuid_into_kuid(vfsuid)), + SIDUNIX_USER, (struct smb_sid *)&file_info->Sids[0]); + id_to_sid(from_kgid_munged(&init_user_ns, vfsgid_into_kgid(vfsgid)), + SIDUNIX_GROUP, (struct smb_sid *)&file_info->Sids[16]); + + rsp->OutputBufferLength = cpu_to_le32(out_buf_len); + inc_rfc1001_len(rsp_org, out_buf_len); + return out_buf_len; } static int smb2_get_info_file(struct ksmbd_work *work, @@ -4862,8 +4876,8 @@ static int smb2_get_info_file(struct ksmbd_work *work, pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n"); rc = -EOPNOTSUPP; } else { - rc = find_file_posix_info(rsp, fp, work->response_buf); - file_infoclass_size = sizeof(struct smb311_posix_qinfo); + file_infoclass_size = find_file_posix_info(rsp, fp, + work->response_buf); } break; default: