/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" #include #include #include #include #include static int smb_do_rename(struct smb_request *sr, struct smb_fqi *src_fqi, struct smb_fqi *dst_fqi); /* * smb_com_rename * * Rename a file. Files OldFileName must exist and NewFileName must not. * Both pathnames must be relative to the Tid specified in the request. * Open files may be renamed. * * Multiple files may be renamed in response to a single request as Rename * File supports wildcards in the file name (last component of the path). * NOTE: we don't support rename with wildcards. * * SearchAttributes indicates the attributes that the target file(s) must * have. If SearchAttributes is zero then only normal files are renamed. * If the system file or hidden attributes are specified then the rename * is inclusive - both the specified type(s) of files and normal files are * renamed. The encoding of SearchAttributes is described in section 3.10 * - File Attribute Encoding. */ smb_sdrc_t smb_com_rename(struct smb_request *sr) { static kmutex_t mutex; struct smb_fqi *src_fqi; struct smb_fqi *dst_fqi; struct smb_node *dst_node; int rc; if (!STYPE_ISDSK(sr->tid_tree->t_res_type)) { smbsr_error(sr, NT_STATUS_ACCESS_DENIED, ERRDOS, ERROR_ACCESS_DENIED); return (SDRC_ERROR_REPLY); } src_fqi = &sr->arg.dirop.fqi; dst_fqi = &sr->arg.dirop.dst_fqi; if (smbsr_decode_vwv(sr, "w", &src_fqi->srch_attr) != 0) return (SDRC_ERROR_REPLY); rc = smbsr_decode_data(sr, "%SS", sr, &src_fqi->path, &dst_fqi->path); if (rc != 0) return (SDRC_ERROR_REPLY); dst_fqi->srch_attr = 0; mutex_enter(&mutex); rc = smb_do_rename(sr, src_fqi, dst_fqi); mutex_exit(&mutex); if (rc != 0) { /* * ERROR_FILE_EXISTS doesn't work for Windows98 clients. * * Windows95 clients don't see this problem because the target * is deleted before the rename request. * * The following values are based on observed WFWG, Win9x, * NT and W2K client behaviour. */ if (rc == EEXIST) { smbsr_error(sr, NT_STATUS_OBJECT_NAME_COLLISION, ERRDOS, ERROR_ALREADY_EXISTS); return (SDRC_ERROR_REPLY); } if (rc == EPIPE) { smbsr_error(sr, NT_STATUS_SHARING_VIOLATION, ERRDOS, ERROR_SHARING_VIOLATION); return (SDRC_ERROR_REPLY); } smbsr_errno(sr, rc); return (SDRC_ERROR_REPLY); } if (src_fqi->dir_snode) smb_node_release(src_fqi->dir_snode); dst_node = dst_fqi->dir_snode; if (dst_node) { if (dst_node->flags & NODE_FLAGS_NOTIFY_CHANGE) { dst_node->flags |= NODE_FLAGS_CHANGED; smb_process_node_notify_change_queue(dst_node); } smb_node_release(dst_node); } SMB_NULL_FQI_NODES(*src_fqi); SMB_NULL_FQI_NODES(*dst_fqi); rc = smbsr_encode_empty_result(sr); return ((rc == 0) ? SDRC_NORMAL_REPLY : SDRC_ERROR_REPLY); } /* * smb_do_rename * * Backend to smb_com_rename to ensure that the rename operation is atomic. * This function should be called within a mutual exclusion region. If the * source and destination are identical, we don't actually do a rename, we * just check that the conditions are right. If the source and destination * files differ only in case, we a case-sensitive rename. Otherwise, we do * a full case-insensitive rename. * * This function should always return errno values. * * Upon success, the last_snode's and dir_snode's of both src_fqi and dst_fqi * are not released in this routine but in smb_com_rename(). */ static int smb_do_rename( struct smb_request *sr, struct smb_fqi *src_fqi, struct smb_fqi *dst_fqi) { struct smb_node *src_node; char *dstname; DWORD status; int rc; int count; if ((rc = smbd_fs_query(sr, src_fqi, FQM_PATH_MUST_EXIST)) != 0) { return (rc); } src_node = src_fqi->last_snode; /* * Break the oplock before access checks. If a client * has a file open, this will force a flush or close, * which may affect the outcome of any share checking. */ if (OPLOCKS_IN_FORCE(src_node)) { status = smb_break_oplock(sr, src_node); if (status != NT_STATUS_SUCCESS) { smb_node_release(src_node); smb_node_release(src_fqi->dir_snode); SMB_NULL_FQI_NODES(*src_fqi); SMB_NULL_FQI_NODES(*dst_fqi); return (EACCES); } } for (count = 0; count <= 3; count++) { if (count) { smb_node_end_crit(src_node); delay(MSEC_TO_TICK(400)); } smb_node_start_crit(src_node, RW_READER); status = smb_node_rename_check(src_node); if (status != NT_STATUS_SHARING_VIOLATION) break; } if (status == NT_STATUS_SHARING_VIOLATION) { smb_node_end_crit(src_node); smb_node_release(src_node); smb_node_release(src_fqi->dir_snode); SMB_NULL_FQI_NODES(*src_fqi); SMB_NULL_FQI_NODES(*dst_fqi); return (EPIPE); /* = ERRbadshare */ } status = smb_range_check(sr, sr->user_cr, src_node, 0, UINT64_MAX, B_TRUE); if (status != NT_STATUS_SUCCESS) { smb_node_end_crit(src_node); smb_node_release(src_node); smb_node_release(src_fqi->dir_snode); SMB_NULL_FQI_NODES(*src_fqi); SMB_NULL_FQI_NODES(*dst_fqi); return (EACCES); } if (utf8_strcasecmp(src_fqi->path, dst_fqi->path) == 0) { if ((rc = smbd_fs_query(sr, dst_fqi, 0)) != 0) { smb_node_end_crit(src_node); smb_node_release(src_node); smb_node_release(src_fqi->dir_snode); SMB_NULL_FQI_NODES(*src_fqi); SMB_NULL_FQI_NODES(*dst_fqi); return (rc); } /* * Because the fqm parameter to smbd_fs_query() was 0, * a successful return value means that dst_fqi->last_snode * may be NULL. */ if (dst_fqi->last_snode) smb_node_release(dst_fqi->last_snode); rc = strcmp(src_fqi->last_comp_od, dst_fqi->last_comp); if (rc == 0) { smb_node_end_crit(src_node); smb_node_release(src_node); smb_node_release(src_fqi->dir_snode); smb_node_release(dst_fqi->dir_snode); SMB_NULL_FQI_NODES(*src_fqi); SMB_NULL_FQI_NODES(*dst_fqi); return (0); } rc = smb_fsop_rename(sr, sr->user_cr, src_fqi->dir_snode, src_fqi->last_comp_od, dst_fqi->dir_snode, dst_fqi->last_comp); if (rc != 0) { smb_node_release(src_fqi->dir_snode); smb_node_release(dst_fqi->dir_snode); SMB_NULL_FQI_NODES(*src_fqi); SMB_NULL_FQI_NODES(*dst_fqi); } smb_node_end_crit(src_node); smb_node_release(src_node); return (rc); } rc = smbd_fs_query(sr, dst_fqi, FQM_PATH_MUST_NOT_EXIST); if (rc != 0) { smb_node_end_crit(src_node); smb_node_release(src_node); smb_node_release(src_fqi->dir_snode); SMB_NULL_FQI_NODES(*src_fqi); SMB_NULL_FQI_NODES(*dst_fqi); return (rc); } /* * Because of FQM_PATH_MUST_NOT_EXIST and the successful return * value, only dst_fqi->dir_snode is valid (dst_fqi->last_snode * is NULL). */ /* * Use the unmangled form of the destination name if the * source and destination names are the same and the source * name is mangled. (We are taking a chance here, assuming * that this is what the user wants.) */ if ((smb_maybe_mangled_name(src_fqi->last_comp)) && (strcmp(src_fqi->last_comp, dst_fqi->last_comp) == 0)) { dstname = src_fqi->last_comp_od; } else { dstname = dst_fqi->last_comp; } rc = smb_fsop_rename(sr, sr->user_cr, src_fqi->dir_snode, src_fqi->last_comp_od, dst_fqi->dir_snode, dstname); if (rc != 0) { smb_node_release(src_fqi->dir_snode); smb_node_release(dst_fqi->dir_snode); SMB_NULL_FQI_NODES(*src_fqi); SMB_NULL_FQI_NODES(*dst_fqi); } smb_node_end_crit(src_node); smb_node_release(src_node); return (rc); }