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 2017 Nexenta Systems, Inc. All rights reserved. 14a90cf9f2SGordon Ross */ 15a90cf9f2SGordon Ross 16a90cf9f2SGordon Ross /* 17a90cf9f2SGordon Ross * Dispatch function for SMB2_OPLOCK_BREAK 18a90cf9f2SGordon Ross */ 19a90cf9f2SGordon Ross 20a90cf9f2SGordon Ross #include <smbsrv/smb2_kproto.h> 21a90cf9f2SGordon Ross 22a90cf9f2SGordon Ross /* 23a90cf9f2SGordon Ross * SMB2 Oplock Break Acknowledgement 24a90cf9f2SGordon Ross * [MS-SMB2 2.2.24] 25a90cf9f2SGordon Ross */ 26a90cf9f2SGordon Ross smb_sdrc_t 27a90cf9f2SGordon Ross smb2_oplock_break_ack(smb_request_t *sr) 28a90cf9f2SGordon Ross { 29a90cf9f2SGordon Ross smb_node_t *node; 30a90cf9f2SGordon Ross smb2fid_t smb2fid; 31a90cf9f2SGordon Ross uint32_t status; 32a90cf9f2SGordon Ross uint16_t StructSize; 33a90cf9f2SGordon Ross uint8_t OplockLevel; 34a90cf9f2SGordon Ross uint8_t brk; 35a90cf9f2SGordon Ross int rc = 0; 36a90cf9f2SGordon Ross 37a90cf9f2SGordon Ross /* 38a90cf9f2SGordon Ross * Decode the SMB2 Oplock Break Ack. 39a90cf9f2SGordon Ross */ 40a90cf9f2SGordon Ross rc = smb_mbc_decodef( 41a90cf9f2SGordon Ross &sr->smb_data, "wb5.qq", 42a90cf9f2SGordon Ross &StructSize, /* w */ 43a90cf9f2SGordon Ross &OplockLevel, /* b */ 44a90cf9f2SGordon Ross /* reserved 5. */ 45a90cf9f2SGordon Ross &smb2fid.persistent, /* q */ 46a90cf9f2SGordon Ross &smb2fid.temporal); /* q */ 47a90cf9f2SGordon Ross if (rc || StructSize != 24) 48a90cf9f2SGordon Ross return (SDRC_ERROR); 49a90cf9f2SGordon Ross 50a90cf9f2SGordon Ross status = smb2sr_lookup_fid(sr, &smb2fid); 5193bc28dbSGordon Ross DTRACE_SMB2_START(op__OplockBreak, smb_request_t *, sr); 52a90cf9f2SGordon Ross if (status) 53a90cf9f2SGordon Ross goto errout; 54a90cf9f2SGordon Ross if ((node = sr->fid_ofile->f_node) == NULL) { 55a90cf9f2SGordon Ross /* Not a regular file */ 56a90cf9f2SGordon Ross status = NT_STATUS_INVALID_PARAMETER; 57a90cf9f2SGordon Ross goto errout; 58a90cf9f2SGordon Ross } 59a90cf9f2SGordon Ross 60a90cf9f2SGordon Ross /* 61a90cf9f2SGordon Ross * Process the oplock break ack. We only expect levels 62a90cf9f2SGordon Ross * at or below the hightest break levels we send, which is 63a90cf9f2SGordon Ross * currently SMB2_OPLOCK_LEVEL_II. 64a90cf9f2SGordon Ross */ 65a90cf9f2SGordon Ross switch (OplockLevel) { 66a90cf9f2SGordon Ross case SMB2_OPLOCK_LEVEL_NONE: /* 0x00 */ 67a90cf9f2SGordon Ross brk = SMB_OPLOCK_BREAK_TO_NONE; 68a90cf9f2SGordon Ross break; 69a90cf9f2SGordon Ross 70a90cf9f2SGordon Ross case SMB2_OPLOCK_LEVEL_II: /* 0x01 */ 71a90cf9f2SGordon Ross brk = SMB_OPLOCK_BREAK_TO_LEVEL_II; 72a90cf9f2SGordon Ross break; 73a90cf9f2SGordon Ross 74a90cf9f2SGordon Ross /* We don't break to these levels (yet). */ 75a90cf9f2SGordon Ross case SMB2_OPLOCK_LEVEL_EXCLUSIVE: /* 0x08 */ 76a90cf9f2SGordon Ross case SMB2_OPLOCK_LEVEL_BATCH: /* 0x09 */ 77a90cf9f2SGordon Ross case SMB2_OPLOCK_LEVEL_LEASE: /* 0xFF */ 78a90cf9f2SGordon Ross default: /* gcc -Wuninitialized */ 79a90cf9f2SGordon Ross status = NT_STATUS_INVALID_PARAMETER; 80a90cf9f2SGordon Ross goto errout; 81a90cf9f2SGordon Ross } 82a90cf9f2SGordon Ross 83a90cf9f2SGordon Ross smb_oplock_ack(node, sr->fid_ofile, brk); 84a90cf9f2SGordon Ross 8593bc28dbSGordon Ross errout: 8693bc28dbSGordon Ross sr->smb2_status = status; 8793bc28dbSGordon Ross DTRACE_SMB2_DONE(op__OplockBreak, smb_request_t *, sr); 8893bc28dbSGordon Ross if (status) { 8993bc28dbSGordon Ross smb2sr_put_error(sr, status); 9093bc28dbSGordon Ross return (SDRC_SUCCESS); 9193bc28dbSGordon Ross } 9293bc28dbSGordon Ross 93a90cf9f2SGordon Ross /* 94a90cf9f2SGordon Ross * Generate SMB2 Oplock Break response 95a90cf9f2SGordon Ross * [MS-SMB2] 2.2.25 96a90cf9f2SGordon Ross */ 97a90cf9f2SGordon Ross StructSize = 24; 98a90cf9f2SGordon Ross (void) smb_mbc_encodef( 99a90cf9f2SGordon Ross &sr->reply, "wb5.qq", 100a90cf9f2SGordon Ross StructSize, /* w */ 101a90cf9f2SGordon Ross OplockLevel, /* b */ 102a90cf9f2SGordon Ross /* reserved 5. */ 103a90cf9f2SGordon Ross smb2fid.persistent, /* q */ 104a90cf9f2SGordon Ross smb2fid.temporal); /* q */ 105a90cf9f2SGordon Ross return (SDRC_SUCCESS); 106a90cf9f2SGordon Ross } 107a90cf9f2SGordon Ross 108a90cf9f2SGordon Ross /* 109a90cf9f2SGordon Ross * Compose an SMB2 Oplock Break Notification packet, including 110a90cf9f2SGordon Ross * the SMB2 header and everything, in sr->reply. 111a90cf9f2SGordon Ross * The caller will send it and free the request. 112a90cf9f2SGordon Ross */ 113a90cf9f2SGordon Ross void 114a90cf9f2SGordon Ross smb2_oplock_break_notification(smb_request_t *sr, uint8_t brk) 115a90cf9f2SGordon Ross { 116a90cf9f2SGordon Ross smb_ofile_t *ofile = sr->fid_ofile; 117a90cf9f2SGordon Ross smb2fid_t smb2fid; 118a90cf9f2SGordon Ross uint16_t StructSize; 119a90cf9f2SGordon Ross uint8_t OplockLevel; 120a90cf9f2SGordon Ross 121a90cf9f2SGordon Ross switch (brk) { 122a90cf9f2SGordon Ross default: 123a90cf9f2SGordon Ross ASSERT(0); 124a90cf9f2SGordon Ross /* FALLTHROUGH */ 125a90cf9f2SGordon Ross case SMB_OPLOCK_BREAK_TO_NONE: 126a90cf9f2SGordon Ross OplockLevel = SMB2_OPLOCK_LEVEL_NONE; 127a90cf9f2SGordon Ross break; 128a90cf9f2SGordon Ross case SMB_OPLOCK_BREAK_TO_LEVEL_II: 129a90cf9f2SGordon Ross OplockLevel = SMB2_OPLOCK_LEVEL_II; 130a90cf9f2SGordon Ross break; 131a90cf9f2SGordon Ross } 132a90cf9f2SGordon Ross 133a90cf9f2SGordon Ross /* 134a90cf9f2SGordon Ross * SMB2 Header 135a90cf9f2SGordon Ross */ 136a90cf9f2SGordon Ross sr->smb2_cmd_code = SMB2_OPLOCK_BREAK; 137a90cf9f2SGordon Ross sr->smb2_hdr_flags = SMB2_FLAGS_SERVER_TO_REDIR; 138*811599a4SMatt Barden sr->smb_tid = 0; 139a90cf9f2SGordon Ross sr->smb_pid = 0; 140*811599a4SMatt Barden sr->smb2_ssnid = 0; 141a90cf9f2SGordon Ross sr->smb2_messageid = UINT64_MAX; 142a90cf9f2SGordon Ross (void) smb2_encode_header(sr, B_FALSE); 143a90cf9f2SGordon Ross 144a90cf9f2SGordon Ross /* 145a90cf9f2SGordon Ross * SMB2 Oplock Break, variable part 146a90cf9f2SGordon Ross */ 147a90cf9f2SGordon Ross StructSize = 24; 148*811599a4SMatt Barden smb2fid.persistent = ofile->f_persistid; 149a90cf9f2SGordon Ross smb2fid.temporal = ofile->f_fid; 150a90cf9f2SGordon Ross (void) smb_mbc_encodef( 151a90cf9f2SGordon Ross &sr->reply, "wb5.qq", 152a90cf9f2SGordon Ross StructSize, /* w */ 153a90cf9f2SGordon Ross OplockLevel, /* b */ 154a90cf9f2SGordon Ross /* reserved 5. */ 155a90cf9f2SGordon Ross smb2fid.persistent, /* q */ 156a90cf9f2SGordon Ross smb2fid.temporal); /* q */ 157a90cf9f2SGordon Ross } 158