1a90cf9f2SGordon Ross /* 2a90cf9f2SGordon Ross * This file and its contents are supplied under the terms of the 3a90cf9f2SGordon Ross * Common Development and Distribution License ("CDDL"), version 1.0. 4a90cf9f2SGordon Ross * You may only use this file in accordance with the terms of version 5a90cf9f2SGordon Ross * 1.0 of the CDDL. 6a90cf9f2SGordon Ross * 7a90cf9f2SGordon Ross * A full copy of the text of the CDDL should have accompanied this 8a90cf9f2SGordon Ross * source. A copy of the CDDL is also available via the Internet at 9a90cf9f2SGordon Ross * http://www.illumos.org/license/CDDL. 10a90cf9f2SGordon Ross */ 11a90cf9f2SGordon Ross 12a90cf9f2SGordon Ross /* 1393bc28dbSGordon Ross * Copyright 2019 Nexenta Systems, Inc. All rights reserved. 14a90cf9f2SGordon Ross */ 15a90cf9f2SGordon Ross 16a90cf9f2SGordon Ross /* 17a90cf9f2SGordon Ross * Dispatch function for SMB2_WRITE 18a90cf9f2SGordon Ross */ 19a90cf9f2SGordon Ross 20a90cf9f2SGordon Ross #include <smbsrv/smb2_kproto.h> 21a90cf9f2SGordon Ross #include <smbsrv/smb_fsops.h> 22a90cf9f2SGordon Ross 23a90cf9f2SGordon Ross smb_sdrc_t 24a90cf9f2SGordon Ross smb2_write(smb_request_t *sr) 25a90cf9f2SGordon Ross { 2693bc28dbSGordon Ross smb_rw_param_t *param = NULL; 27a90cf9f2SGordon Ross smb_ofile_t *of = NULL; 28a90cf9f2SGordon Ross smb_vdb_t *vdb = NULL; 29a90cf9f2SGordon Ross uint16_t StructSize; 30a90cf9f2SGordon Ross uint16_t DataOff; 31a90cf9f2SGordon Ross uint32_t Length; 32a90cf9f2SGordon Ross uint64_t Offset; 33a90cf9f2SGordon Ross smb2fid_t smb2fid; 34a90cf9f2SGordon Ross uint32_t Channel; 35a90cf9f2SGordon Ross uint32_t Remaining; 36a90cf9f2SGordon Ross uint16_t ChanInfoOffset; 37a90cf9f2SGordon Ross uint16_t ChanInfoLength; 38a90cf9f2SGordon Ross uint32_t Flags; 39a90cf9f2SGordon Ross uint32_t XferCount; 40a90cf9f2SGordon Ross uint32_t status; 41a90cf9f2SGordon Ross int data_chain_off, skip; 42a90cf9f2SGordon Ross int stability = 0; 43a90cf9f2SGordon Ross int rc = 0; 44a90cf9f2SGordon Ross 45a90cf9f2SGordon Ross /* 4693bc28dbSGordon Ross * Decode SMB2 Write request 47a90cf9f2SGordon Ross */ 48a90cf9f2SGordon Ross rc = smb_mbc_decodef( 49a90cf9f2SGordon Ross &sr->smb_data, 50a90cf9f2SGordon Ross "wwlqqqllwwl", 51a90cf9f2SGordon Ross &StructSize, /* w */ 52a90cf9f2SGordon Ross &DataOff, /* w */ 53a90cf9f2SGordon Ross &Length, /* l */ 54a90cf9f2SGordon Ross &Offset, /* q */ 55a90cf9f2SGordon Ross &smb2fid.persistent, /* q */ 56a90cf9f2SGordon Ross &smb2fid.temporal, /* q */ 57a90cf9f2SGordon Ross &Channel, /* l */ 58a90cf9f2SGordon Ross &Remaining, /* l */ 59a90cf9f2SGordon Ross &ChanInfoOffset, /* w */ 60a90cf9f2SGordon Ross &ChanInfoLength, /* w */ 61a90cf9f2SGordon Ross &Flags); /* l */ 62a90cf9f2SGordon Ross if (rc) 63a90cf9f2SGordon Ross return (SDRC_ERROR); 64a90cf9f2SGordon Ross if (StructSize != 49) 65a90cf9f2SGordon Ross return (SDRC_ERROR); 66a90cf9f2SGordon Ross 6793bc28dbSGordon Ross /* 6893bc28dbSGordon Ross * Setup an smb_rw_param_t which contains the VDB we need. 6993bc28dbSGordon Ross * This is automatically free'd. 7093bc28dbSGordon Ross */ 7193bc28dbSGordon Ross param = smb_srm_zalloc(sr, sizeof (*param)); 7293bc28dbSGordon Ross param->rw_offset = Offset; 7393bc28dbSGordon Ross param->rw_count = Length; 7493bc28dbSGordon Ross /* Note that the dtrace provider uses sr->arg.rw */ 7593bc28dbSGordon Ross sr->arg.rw = param; 76a90cf9f2SGordon Ross 77a90cf9f2SGordon Ross /* 78a90cf9f2SGordon Ross * Skip any padding before the write data. 79a90cf9f2SGordon Ross */ 80a90cf9f2SGordon Ross data_chain_off = sr->smb2_cmd_hdr + DataOff; 81a90cf9f2SGordon Ross skip = data_chain_off - sr->smb_data.chain_offset; 8293bc28dbSGordon Ross if (skip < 0) 8393bc28dbSGordon Ross return (SDRC_ERROR); 8493bc28dbSGordon Ross if (skip > 0) 85a90cf9f2SGordon Ross (void) smb_mbc_decodef(&sr->smb_data, "#.", skip); 86a90cf9f2SGordon Ross 8793bc28dbSGordon Ross /* 8893bc28dbSGordon Ross * Decode the write data (payload) 8993bc28dbSGordon Ross */ 9093bc28dbSGordon Ross if (Length > smb2_max_rwsize) 9193bc28dbSGordon Ross return (SDRC_ERROR); 9293bc28dbSGordon Ross vdb = ¶m->rw_vdb; 93a90cf9f2SGordon Ross rc = smb_mbc_decodef(&sr->smb_data, "#B", Length, vdb); 9493bc28dbSGordon Ross if (rc != 0 || vdb->vdb_len != Length) 9593bc28dbSGordon Ross return (SDRC_ERROR); 96a90cf9f2SGordon Ross vdb->vdb_uio.uio_loffset = (offset_t)Offset; 97a90cf9f2SGordon Ross 9893bc28dbSGordon Ross /* 9993bc28dbSGordon Ross * Want FID lookup before the start probe. 10093bc28dbSGordon Ross */ 10193bc28dbSGordon Ross status = smb2sr_lookup_fid(sr, &smb2fid); 10293bc28dbSGordon Ross of = sr->fid_ofile; 10393bc28dbSGordon Ross 10493bc28dbSGordon Ross DTRACE_SMB2_START(op__Write, smb_request_t *, sr); /* arg.rw */ 10593bc28dbSGordon Ross 10693bc28dbSGordon Ross if (status) 10793bc28dbSGordon Ross goto errout; /* Bad FID */ 10893bc28dbSGordon Ross 10993bc28dbSGordon Ross 110a90cf9f2SGordon Ross XferCount = 0; 111a90cf9f2SGordon Ross if (Length == 0) 11293bc28dbSGordon Ross goto errout; 113a90cf9f2SGordon Ross 114a90cf9f2SGordon Ross switch (of->f_tree->t_res_type & STYPE_MASK) { 115a90cf9f2SGordon Ross case STYPE_DISKTREE: 116a90cf9f2SGordon Ross case STYPE_PRINTQ: 117a90cf9f2SGordon Ross if (!smb_node_is_dir(of->f_node)) { 118a90cf9f2SGordon Ross /* Check for conflicting locks. */ 119a90cf9f2SGordon Ross rc = smb_lock_range_access(sr, of->f_node, 120a90cf9f2SGordon Ross Offset, Length, B_TRUE); 121a90cf9f2SGordon Ross if (rc) { 122a90cf9f2SGordon Ross rc = ERANGE; 123a90cf9f2SGordon Ross break; 124a90cf9f2SGordon Ross } 125a90cf9f2SGordon Ross } 126a90cf9f2SGordon Ross if ((Flags & SMB2_WRITEFLAG_WRITE_THROUGH) || 127a90cf9f2SGordon Ross (of->f_node->flags & NODE_FLAGS_WRITE_THROUGH)) { 128a90cf9f2SGordon Ross stability = FSYNC; 129a90cf9f2SGordon Ross } 130*55f0a249SGordon Ross rc = smb_fsop_write(sr, of->f_cr, of->f_node, of, 131a90cf9f2SGordon Ross &vdb->vdb_uio, &XferCount, stability); 132a90cf9f2SGordon Ross if (rc) 133a90cf9f2SGordon Ross break; 134a90cf9f2SGordon Ross of->f_written = B_TRUE; 13594047d49SGordon Ross /* This revokes read cache delegations. */ 13694047d49SGordon Ross (void) smb_oplock_break_WRITE(of->f_node, of); 137a90cf9f2SGordon Ross break; 138a90cf9f2SGordon Ross 139a90cf9f2SGordon Ross case STYPE_IPC: 140a90cf9f2SGordon Ross rc = smb_opipe_write(sr, &vdb->vdb_uio); 141a90cf9f2SGordon Ross if (rc == 0) 142a90cf9f2SGordon Ross XferCount = Length; 143a90cf9f2SGordon Ross break; 144a90cf9f2SGordon Ross 145a90cf9f2SGordon Ross default: 146a90cf9f2SGordon Ross rc = EACCES; 147a90cf9f2SGordon Ross break; 148a90cf9f2SGordon Ross } 14993bc28dbSGordon Ross status = smb_errno2status(rc); 150a90cf9f2SGordon Ross 15193bc28dbSGordon Ross errout: 15293bc28dbSGordon Ross sr->smb2_status = status; 15393bc28dbSGordon Ross DTRACE_SMB2_DONE(op__Write, smb_request_t *, sr); /* arg.rw */ 15493bc28dbSGordon Ross 15593bc28dbSGordon Ross if (status) { 15693bc28dbSGordon Ross smb2sr_put_error(sr, status); 157a90cf9f2SGordon Ross return (SDRC_SUCCESS); 158a90cf9f2SGordon Ross } 159a90cf9f2SGordon Ross 160a90cf9f2SGordon Ross /* 16193bc28dbSGordon Ross * Encode SMB2 Write reply 162a90cf9f2SGordon Ross */ 163a90cf9f2SGordon Ross DataOff = SMB2_HDR_SIZE + 16; 164a90cf9f2SGordon Ross rc = smb_mbc_encodef( 165a90cf9f2SGordon Ross &sr->reply, "wwlll", 166a90cf9f2SGordon Ross 17, /* StructSize */ /* w */ 167a90cf9f2SGordon Ross 0, /* reserved */ /* w */ 168a90cf9f2SGordon Ross XferCount, /* l */ 169a90cf9f2SGordon Ross 0, /* DataRemaining */ /* l */ 170a90cf9f2SGordon Ross 0); /* Channel Info */ /* l */ 17193bc28dbSGordon Ross if (rc) { 17293bc28dbSGordon Ross sr->smb2_status = NT_STATUS_INTERNAL_ERROR; 173a90cf9f2SGordon Ross return (SDRC_ERROR); 17493bc28dbSGordon Ross } 175a90cf9f2SGordon Ross 176a90cf9f2SGordon Ross mutex_enter(&of->f_mutex); 177a90cf9f2SGordon Ross of->f_seek_pos = Offset + XferCount; 178a90cf9f2SGordon Ross mutex_exit(&of->f_mutex); 179a90cf9f2SGordon Ross 180a90cf9f2SGordon Ross return (SDRC_SUCCESS); 181a90cf9f2SGordon Ross } 182