From patchwork Fri Jan 19 17:12:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Aur=C3=A9lien_Aptel?= X-Patchwork-Id: 863662 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-cifs-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3zNS8C293xz9s7G for ; Sat, 20 Jan 2018 04:13:15 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755982AbeASRNO (ORCPT ); Fri, 19 Jan 2018 12:13:14 -0500 Received: from smtp.nue.novell.com ([195.135.221.5]:48053 "EHLO smtp.nue.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755940AbeASRNO (ORCPT ); Fri, 19 Jan 2018 12:13:14 -0500 Received: from localhost (charybdis-ext.suse.de [195.135.221.2]) by smtp.nue.novell.com with ESMTP (TLS encrypted); Fri, 19 Jan 2018 18:13:12 +0100 From: Aurelien Aptel To: linux-cifs@vger.kernel.org Cc: smfrench@gmail.com, Aurelien Aptel Subject: [PATCH v2 2/2] CIFS: use tcon_ipc instead of use_ipc parameter of SMB2_ioctl Date: Fri, 19 Jan 2018 18:12:58 +0100 Message-Id: <20180119171258.14244-3-aaptel@suse.com> X-Mailer: git-send-email 2.12.3 In-Reply-To: <20180119171258.14244-1-aaptel@suse.com> References: <20180117172200.3221-1-aaptel@suse.com> <20180119171258.14244-1-aaptel@suse.com> Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Since IPC now has a tcon object, the caller can just pass it. This allows domain-based DFS requests to work with smb2+. Link: https://bugzilla.samba.org/show_bug.cgi?id=12917 Fixes: 9d49640a21bf ("CIFS: implement get_dfs_refer for SMB2+") Signed-off-by: Aurelien Aptel --- fs/cifs/smb2file.c | 2 +- fs/cifs/smb2ops.c | 53 ++++++++++++++++++++++------------------------------- fs/cifs/smb2pdu.c | 4 +--- fs/cifs/smb2proto.h | 3 +-- 4 files changed, 25 insertions(+), 37 deletions(-) diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c index b4b1f0305f29..12af5dba742b 100644 --- a/fs/cifs/smb2file.c +++ b/fs/cifs/smb2file.c @@ -74,7 +74,7 @@ smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms, nr_ioctl_req.Reserved = 0; rc = SMB2_ioctl(xid, oparms->tcon, fid->persistent_fid, fid->volatile_fid, FSCTL_LMR_REQUEST_RESILIENCY, - true /* is_fsctl */, false /* use_ipc */, + true /* is_fsctl */, (char *)&nr_ioctl_req, sizeof(nr_ioctl_req), NULL, NULL /* no return info */); if (rc == -EOPNOTSUPP) { diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index ed88ab8a4774..1d9907da96f4 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -283,7 +283,6 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon) rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */, - false /* use_ipc */, NULL /* no data input */, 0 /* no data input */, (char **)&out_buf, &ret_data_len); if (rc != 0) @@ -782,7 +781,6 @@ SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon, rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid, FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */, - false /* use_ipc */, NULL, 0 /* no input */, (char **)&res_key, &ret_data_len); @@ -848,8 +846,7 @@ smb2_copychunk_range(const unsigned int xid, /* Request server copy to target from src identified by key */ rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE, - true /* is_fsctl */, false /* use_ipc */, - (char *)pcchunk, + true /* is_fsctl */, (char *)pcchunk, sizeof(struct copychunk_ioctl), (char **)&retbuf, &ret_data_len); if (rc == 0) { @@ -1006,7 +1003,7 @@ static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon, rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, cfile->fid.volatile_fid, FSCTL_SET_SPARSE, - true /* is_fctl */, false /* use_ipc */, + true /* is_fctl */, &setsparse, 1, NULL, NULL); if (rc) { tcon->broken_sparse_sup = true; @@ -1077,7 +1074,7 @@ smb2_duplicate_extents(const unsigned int xid, rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, trgtfile->fid.volatile_fid, FSCTL_DUPLICATE_EXTENTS_TO_FILE, - true /* is_fsctl */, false /* use_ipc */, + true /* is_fsctl */, (char *)&dup_ext_buf, sizeof(struct duplicate_extents_to_file), NULL, @@ -1112,7 +1109,7 @@ smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon, return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, cfile->fid.volatile_fid, FSCTL_SET_INTEGRITY_INFORMATION, - true /* is_fsctl */, false /* use_ipc */, + true /* is_fsctl */, (char *)&integr_info, sizeof(struct fsctl_set_integrity_information_req), NULL, @@ -1132,7 +1129,7 @@ smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon, rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, cfile->fid.volatile_fid, FSCTL_SRV_ENUMERATE_SNAPSHOTS, - true /* is_fsctl */, false /* use_ipc */, + true /* is_fsctl */, NULL, 0 /* no input data */, (char **)&retbuf, &ret_data_len); @@ -1351,16 +1348,20 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses, cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name); /* - * Use any tcon from the current session. Here, the first one. + * Try to use the IPC tcon, otherwise just use any */ - spin_lock(&cifs_tcp_ses_lock); - tcon = list_first_entry_or_null(&ses->tcon_list, struct cifs_tcon, - tcon_list); - if (tcon) - tcon->tc_count++; - spin_unlock(&cifs_tcp_ses_lock); + tcon = ses->tcon_ipc; + if (tcon == NULL) { + spin_lock(&cifs_tcp_ses_lock); + tcon = list_first_entry_or_null(&ses->tcon_list, + struct cifs_tcon, + tcon_list); + if (tcon) + tcon->tc_count++; + spin_unlock(&cifs_tcp_ses_lock); + } - if (!tcon) { + if (tcon == NULL) { cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n", ses); rc = -ENOTCONN; @@ -1389,20 +1390,11 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses, memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len); do { - /* try first with IPC */ rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, FSCTL_DFS_GET_REFERRALS, - true /* is_fsctl */, true /* use_ipc */, + true /* is_fsctl */, (char *)dfs_req, dfs_req_size, (char **)&dfs_rsp, &dfs_rsp_size); - if (rc == -ENOTCONN) { - /* try with normal tcon */ - rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, - FSCTL_DFS_GET_REFERRALS, - true /* is_fsctl */, false /*use_ipc*/, - (char *)dfs_req, dfs_req_size, - (char **)&dfs_rsp, &dfs_rsp_size); - } } while (rc == -EAGAIN); if (rc) { @@ -1421,7 +1413,8 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses, } out: - if (tcon) { + if (tcon && !tcon->ipc) { + /* ipc tcons are not refcounted */ spin_lock(&cifs_tcp_ses_lock); tcon->tc_count--; spin_unlock(&cifs_tcp_ses_lock); @@ -1713,8 +1706,7 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon, rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, - true /* is_fctl */, false /* use_ipc */, - (char *)&fsctl_buf, + true /* is_fctl */, (char *)&fsctl_buf, sizeof(struct file_zero_data_information), NULL, NULL); free_xid(xid); return rc; @@ -1748,8 +1740,7 @@ static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon, rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, - true /* is_fctl */, false /* use_ipc */, - (char *)&fsctl_buf, + true /* is_fctl */, (char *)&fsctl_buf, sizeof(struct file_zero_data_information), NULL, NULL); free_xid(xid); return rc; diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index a5c94f8308eb..a8a632c44c1b 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -713,7 +713,6 @@ int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon) rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID, FSCTL_VALIDATE_NEGOTIATE_INFO, true /* is_fsctl */, - false /* use_ipc */, (char *)&vneg_inbuf, sizeof(struct validate_negotiate_info_req), (char **)&pneg_rsp, &rsplen); @@ -1863,7 +1862,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, */ int SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, - u64 volatile_fid, u32 opcode, bool is_fsctl, bool use_ipc, + u64 volatile_fid, u32 opcode, bool is_fsctl, char *in_data, u32 indatalen, char **out_data, u32 *plen /* returned data len */) { @@ -2028,7 +2027,6 @@ SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid, FSCTL_SET_COMPRESSION, true /* is_fsctl */, - false /* use_ipc */, (char *)&fsctl_input /* data input */, 2 /* in data len */, &ret_data /* out data */, NULL); diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h index e9ab5227e7a8..05287b01f596 100644 --- a/fs/cifs/smb2proto.h +++ b/fs/cifs/smb2proto.h @@ -125,8 +125,7 @@ extern int SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, struct smb2_err_rsp **err_buf); extern int SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid, u32 opcode, - bool is_fsctl, bool use_ipc, - char *in_data, u32 indatalen, + bool is_fsctl, char *in_data, u32 indatalen, char **out_data, u32 *plen /* returned data len */); extern int SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_file_id, u64 volatile_file_id);