/* * SMB2 version specific operations * * Copyright (c) 2012, Jeff Layton * * This library is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License v2 as published * by the Free Software Foundation. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See * the GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include "cifsglob.h" #include "smb2pdu.h" #include "smb2proto.h" #include "cifsproto.h" #include "cifs_debug.h" #include "smb2status.h" #include "smb2glob.h" static int change_conf(struct TCP_Server_Info *server) { server->credits += server->echo_credits + server->oplock_credits; server->oplock_credits = server->echo_credits = 0; switch (server->credits) { case 0: return -1; case 1: server->echoes = false; server->oplocks = false; cifs_dbg(VFS, "disabling echoes and oplocks\n"); break; case 2: server->echoes = true; server->oplocks = false; server->echo_credits = 1; cifs_dbg(FYI, "disabling oplocks\n"); break; default: server->echoes = true; server->oplocks = true; server->echo_credits = 1; server->oplock_credits = 1; } server->credits -= server->echo_credits + server->oplock_credits; return 0; } static void smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add, const int optype) { int *val, rc = 0; spin_lock(&server->req_lock); val = server->ops->get_credits_field(server, optype); *val += add; server->in_flight--; if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP) rc = change_conf(server); /* * Sometimes server returns 0 credits on oplock break ack - we need to * rebalance credits in this case. */ else if (server->in_flight > 0 && server->oplock_credits == 0 && server->oplocks) { if (server->credits > 1) { server->credits--; server->oplock_credits++; } } spin_unlock(&server->req_lock); wake_up(&server->request_q); if (rc) cifs_reconnect(server); } static void smb2_set_credits(struct TCP_Server_Info *server, const int val) { spin_lock(&server->req_lock); server->credits = val; spin_unlock(&server->req_lock); } static int * smb2_get_credits_field(struct TCP_Server_Info *server, const int optype) { switch (optype) { case CIFS_ECHO_OP: return &server->echo_credits; case CIFS_OBREAK_OP: return &server->oplock_credits; default: return &server->credits; } } static unsigned int smb2_get_credits(struct mid_q_entry *mid) { return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest); } static __u64 smb2_get_next_mid(struct TCP_Server_Info *server) { __u64 mid; /* for SMB2 we need the current value */ spin_lock(&GlobalMid_Lock); mid = server->CurrentMid++; spin_unlock(&GlobalMid_Lock); return mid; } static struct mid_q_entry * smb2_find_mid(struct TCP_Server_Info *server, char *buf) { struct mid_q_entry *mid; struct smb2_hdr *hdr = (struct smb2_hdr *)buf; spin_lock(&GlobalMid_Lock); list_for_each_entry(mid, &server->pending_mid_q, qhead) { if ((mid->mid == hdr->MessageId) && (mid->mid_state == MID_REQUEST_SUBMITTED) && (mid->command == hdr->Command)) { spin_unlock(&GlobalMid_Lock); return mid; } } spin_unlock(&GlobalMid_Lock); return NULL; } static void smb2_dump_detail(void *buf) { #ifdef CONFIG_CIFS_DEBUG2 struct smb2_hdr *smb = (struct smb2_hdr *)buf; cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n", smb->Command, smb->Status, smb->Flags, smb->MessageId, smb->ProcessId); cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb)); #endif } static bool smb2_need_neg(struct TCP_Server_Info *server) { return server->max_read == 0; } static int smb2_negotiate(const unsigned int xid, struct cifs_ses *ses) { int rc; ses->server->CurrentMid = 0; rc = SMB2_negotiate(xid, ses); /* BB we probably don't need to retry with modern servers */ if (rc == -EAGAIN) rc = -EHOSTDOWN; return rc; } static unsigned int smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) { struct TCP_Server_Info *server = tcon->ses->server; unsigned int wsize; /* start with specified wsize, or default */ wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE; wsize = min_t(unsigned int, wsize, server->max_write); /* * limit write size to 2 ** 16, because we don't support multicredit * requests now. */ wsize = min_t(unsigned int, wsize, 2 << 15); return wsize; } static unsigned int smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info) { struct TCP_Server_Info *server = tcon->ses->server; unsigned int rsize; /* start with specified rsize, or default */ rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE; rsize = min_t(unsigned int, rsize, server->max_read); /* * limit write size to 2 ** 16, because we don't support multicredit * requests now. */ rsize = min_t(unsigned int, rsize, 2 << 15); return rsize; } static int smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, const char *full_path) { int rc; __u64 persistent_fid, volatile_fid; __le16 *utf16_path; __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); if (!utf16_path) return -ENOMEM; rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid, FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0, &oplock, NULL); if (rc) { kfree(utf16_path); return rc; } rc = SMB2_close(xid, tcon, persistent_fid, volatile_fid); kfree(utf16_path); return rc; } static int smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, const char *full_path, u64 *uniqueid, FILE_ALL_INFO *data) { *uniqueid = le64_to_cpu(data->IndexNumber); return 0; } static int smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *fid, FILE_ALL_INFO *data) { int rc; struct smb2_file_all_info *smb2_data; smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2, GFP_KERNEL); if (smb2_data == NULL) return -ENOMEM; rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid, smb2_data); if (!rc) move_smb2_info_to_cifs(data, smb2_data); kfree(smb2_data); return rc; } static bool smb2_can_echo(struct TCP_Server_Info *server) { return server->echoes; } static void smb2_clear_stats(struct cifs_tcon *tcon) { #ifdef CONFIG_CIFS_STATS int i; for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0); atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0); } #endif } static void smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon) { #ifdef CONFIG_CIFS_STATS atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent; atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed; seq_printf(m, "\nNegotiates: %d sent %d failed", atomic_read(&sent[SMB2_NEGOTIATE_HE]), atomic_read(&failed[SMB2_NEGOTIATE_HE])); seq_printf(m, "\nSessionSetups: %d sent %d failed", atomic_read(&sent[SMB2_SESSION_SETUP_HE]), atomic_read(&failed[SMB2_SESSION_SETUP_HE])); #define SMB2LOGOFF 0x0002 /* trivial request/resp */ seq_printf(m, "\nLogoffs: %d sent %d failed", atomic_read(&sent[SMB2_LOGOFF_HE]), atomic_read(&failed[SMB2_LOGOFF_HE])); seq_printf(m, "\nTreeConnects: %d sent %d failed", atomic_read(&sent[SMB2_TREE_CONNECT_HE]), atomic_read(&failed[SMB2_TREE_CONNECT_HE])); seq_printf(m, "\nTreeDisconnects: %d sent %d failed", atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]), atomic_read(&failed[SMB2_TREE_DISCONNECT_HE])); seq_printf(m, "\nCreates: %d sent %d failed", atomic_read(&sent[SMB2_CREATE_HE]), atomic_read(&failed[SMB2_CREATE_HE])); seq_printf(m, "\nCloses: %d sent %d failed", atomic_read(&sent[SMB2_CLOSE_HE]), atomic_read(&failed[SMB2_CLOSE_HE])); seq_printf(m, "\nFlushes: %d sent %d failed", atomic_read(&sent[SMB2_FLUSH_HE]), atomic_read(&failed[SMB2_FLUSH_HE])); seq_printf(m, "\nReads: %d sent %d failed", atomic_read(&sent[SMB2_READ_HE]), atomic_read(&failed[SMB2_READ_HE])); seq_printf(m, "\nWrites: %d sent %d failed", atomic_read(&sent[SMB2_WRITE_HE]), atomic_read(&failed[SMB2_WRITE_HE])); seq_printf(m, "\nLocks: %d sent %d failed", atomic_read(&sent[SMB2_LOCK_HE]), atomic_read(&failed[SMB2_LOCK_HE])); seq_printf(m, "\nIOCTLs: %d sent %d failed", atomic_read(&sent[SMB2_IOCTL_HE]), atomic_read(&failed[SMB2_IOCTL_HE])); seq_printf(m, "\nCancels: %d sent %d failed", atomic_read(&sent[SMB2_CANCEL_HE]), atomic_read(&failed[SMB2_CANCEL_HE])); seq_printf(m, "\nEchos: %d sent %d failed", atomic_read(&sent[SMB2_ECHO_HE]), atomic_read(&failed[SMB2_ECHO_HE])); seq_printf(m, "\nQueryDirectories: %d sent %d failed", atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]), atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE])); seq_printf(m, "\nChangeNotifies: %d sent %d failed", atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]), atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE])); seq_printf(m, "\nQueryInfos: %d sent %d failed", atomic_read(&sent[SMB2_QUERY_INFO_HE]), atomic_read(&failed[SMB2_QUERY_INFO_HE])); seq_printf(m, "\nSetInfos: %d sent %d failed", atomic_read(&sent[SMB2_SET_INFO_HE]), atomic_read(&failed[SMB2_SET_INFO_HE])); seq_printf(m, "\nOplockBreaks: %d sent %d failed", atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]), atomic_read(&failed[SMB2_OPLOCK_BREAK_HE])); #endif } static void smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock) { struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode); cfile->fid.persistent_fid = fid->persistent_fid; cfile->fid.volatile_fid = fid->volatile_fid; smb2_set_oplock_level(cinode, oplock); cinode->can_cache_brlcks = cinode->clientCanCacheAll; } static void smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *fid) { SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); } static int smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *fid) { return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid); } static unsigned int smb2_read_data_offset(char *buf) { struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; return rsp->DataOffset; } static unsigned int smb2_read_data_length(char *buf) { struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf; return le32_to_cpu(rsp->DataLength); } static int smb2_sync_read(const unsigned int xid, struct cifsFileInfo *cfile, struct cifs_io_parms *parms, unsigned int *bytes_read, char **buf, int *buf_type) { parms->persistent_fid = cfile->fid.persistent_fid; parms->volatile_fid = cfile->fid.volatile_fid; return SMB2_read(xid, parms, bytes_read, buf, buf_type); } static int smb2_sync_write(const unsigned int xid, struct cifsFileInfo *cfile, struct cifs_io_parms *parms, unsigned int *written, struct kvec *iov, unsigned long nr_segs) { parms->persistent_fid = cfile->fid.persistent_fid; parms->volatile_fid = cfile->fid.volatile_fid; return SMB2_write(xid, parms, written, iov, nr_segs); } static int smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon, struct cifsFileInfo *cfile, __u64 size, bool set_alloc) { __le64 eof = cpu_to_le64(size); return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, cfile->fid.volatile_fid, cfile->pid, &eof); } static int smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, const char *path, struct cifs_sb_info *cifs_sb, struct cifs_fid *fid, __u16 search_flags, struct cifs_search_info *srch_inf) { __le16 *utf16_path; int rc; __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; __u64 persistent_fid, volatile_fid; utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); if (!utf16_path) return -ENOMEM; rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid, FILE_READ_ATTRIBUTES | FILE_READ_DATA, FILE_OPEN, 0, 0, &oplock, NULL); kfree(utf16_path); if (rc) { cifs_dbg(VFS, "open dir failed\n"); return rc; } srch_inf->entries_in_buffer = 0; srch_inf->index_of_last_entry = 0; fid->persistent_fid = persistent_fid; fid->volatile_fid = volatile_fid; rc = SMB2_query_directory(xid, tcon, persistent_fid, volatile_fid, 0, srch_inf); if (rc) { cifs_dbg(VFS, "query directory failed\n"); SMB2_close(xid, tcon, persistent_fid, volatile_fid); } return rc; } static int smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *fid, __u16 search_flags, struct cifs_search_info *srch_inf) { return SMB2_query_directory(xid, tcon, fid->persistent_fid, fid->volatile_fid, 0, srch_inf); } static int smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *fid) { return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid); } /* * If we negotiate SMB2 protocol and get STATUS_PENDING - update * the number of credits and return true. Otherwise - return false. */ static bool smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length) { struct smb2_hdr *hdr = (struct smb2_hdr *)buf; if (hdr->Status != STATUS_PENDING) return false; if (!length) { spin_lock(&server->req_lock); server->credits += le16_to_cpu(hdr->CreditRequest); spin_unlock(&server->req_lock); wake_up(&server->request_q); } return true; } static int smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid, struct cifsInodeInfo *cinode) { if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING) return SMB2_lease_break(0, tcon, cinode->lease_key, smb2_get_lease_state(cinode)); return SMB2_oplock_break(0, tcon, fid->persistent_fid, fid->volatile_fid, cinode->clientCanCacheRead ? 1 : 0); } static int smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, struct kstatfs *buf) { int rc; u64 persistent_fid, volatile_fid; __le16 srch_path = 0; /* Null - open root of share */ u8 oplock = SMB2_OPLOCK_LEVEL_NONE; rc = SMB2_open(xid, tcon, &srch_path, &persistent_fid, &volatile_fid, FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0, &oplock, NULL); if (rc) return rc; buf->f_type = SMB2_MAGIC_NUMBER; rc = SMB2_QFS_info(xid, tcon, persistent_fid, volatile_fid, buf); SMB2_close(xid, tcon, persistent_fid, volatile_fid); return rc; } static bool smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2) { return ob1->fid.persistent_fid == ob2->fid.persistent_fid && ob1->fid.volatile_fid == ob2->fid.volatile_fid; } static int smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset, __u64 length, __u32 type, int lock, int unlock, bool wait) { if (unlock && !lock) type = SMB2_LOCKFLAG_UNLOCK; return SMB2_lock(xid, tlink_tcon(cfile->tlink), cfile->fid.persistent_fid, cfile->fid.volatile_fid, current->tgid, length, offset, type, wait); } static void smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid) { memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE); } static void smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid) { memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE); } static void smb2_new_lease_key(struct cifs_fid *fid) { get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE); } struct smb_version_operations smb21_operations = { .compare_fids = smb2_compare_fids, .setup_request = smb2_setup_request, .setup_async_request = smb2_setup_async_request, .check_receive = smb2_check_receive, .add_credits = smb2_add_credits, .set_credits = smb2_set_credits, .get_credits_field = smb2_get_credits_field, .get_credits = smb2_get_credits, .get_next_mid = smb2_get_next_mid, .read_data_offset = smb2_read_data_offset, .read_data_length = smb2_read_data_length, .map_error = map_smb2_to_linux_error, .find_mid = smb2_find_mid, .check_message = smb2_check_message, .dump_detail = smb2_dump_detail, .clear_stats = smb2_clear_stats, .print_stats = smb2_print_stats, .is_oplock_break = smb2_is_valid_oplock_break, .need_neg = smb2_need_neg, .negotiate = smb2_negotiate, .negotiate_wsize = smb2_negotiate_wsize, .negotiate_rsize = smb2_negotiate_rsize, .sess_setup = SMB2_sess_setup, .logoff = SMB2_logoff, .tree_connect = SMB2_tcon, .tree_disconnect = SMB2_tdis, .is_path_accessible = smb2_is_path_accessible, .can_echo = smb2_can_echo, .echo = SMB2_echo, .query_path_info = smb2_query_path_info, .get_srv_inum = smb2_get_srv_inum, .query_file_info = smb2_query_file_info, .set_path_size = smb2_set_path_size, .set_file_size = smb2_set_file_size, .set_file_info = smb2_set_file_info, .mkdir = smb2_mkdir, .mkdir_setinfo = smb2_mkdir_setinfo, .rmdir = smb2_rmdir, .unlink = smb2_unlink, .rename = smb2_rename_path, .create_hardlink = smb2_create_hardlink, .open = smb2_open_file, .set_fid = smb2_set_fid, .close = smb2_close_file, .flush = smb2_flush_file, .async_readv = smb2_async_readv, .async_writev = smb2_async_writev, .sync_read = smb2_sync_read, .sync_write = smb2_sync_write, .query_dir_first = smb2_query_dir_first, .query_dir_next = smb2_query_dir_next, .close_dir = smb2_close_dir, .calc_smb_size = smb2_calc_size, .is_status_pending = smb2_is_status_pending, .oplock_response = smb2_oplock_response, .queryfs = smb2_queryfs, .mand_lock = smb2_mand_lock, .mand_unlock_range = smb2_unlock_range, .push_mand_locks = smb2_push_mandatory_locks, .get_lease_key = smb2_get_lease_key, .set_lease_key = smb2_set_lease_key, .new_lease_key = smb2_new_lease_key, .calc_signature = smb2_calc_signature, }; struct smb_version_operations smb30_operations = { .compare_fids = smb2_compare_fids, .setup_request = smb2_setup_request, .setup_async_request = smb2_setup_async_request, .check_receive = smb2_check_receive, .add_credits = smb2_add_credits, .set_credits = smb2_set_credits, .get_credits_field = smb2_get_credits_field, .get_credits = smb2_get_credits, .get_next_mid = smb2_get_next_mid, .read_data_offset = smb2_read_data_offset, .read_data_length = smb2_read_data_length, .map_error = map_smb2_to_linux_error, .find_mid = smb2_find_mid, .check_message = smb2_check_message, .dump_detail = smb2_dump_detail, .clear_stats = smb2_clear_stats, .print_stats = smb2_print_stats, .is_oplock_break = smb2_is_valid_oplock_break, .need_neg = smb2_need_neg, .negotiate = smb2_negotiate, .negotiate_wsize = smb2_negotiate_wsize, .negotiate_rsize = smb2_negotiate_rsize, .sess_setup = SMB2_sess_setup, .logoff = SMB2_logoff, .tree_connect = SMB2_tcon, .tree_disconnect = SMB2_tdis, .is_path_accessible = smb2_is_path_accessible, .can_echo = smb2_can_echo, .echo = SMB2_echo, .query_path_info = smb2_query_path_info, .get_srv_inum = smb2_get_srv_inum, .query_file_info = smb2_query_file_info, .set_path_size = smb2_set_path_size, .set_file_size = smb2_set_file_size, .set_file_info = smb2_set_file_info, .mkdir = smb2_mkdir, .mkdir_setinfo = smb2_mkdir_setinfo, .rmdir = smb2_rmdir, .unlink = smb2_unlink, .rename = smb2_rename_path, .create_hardlink = smb2_create_hardlink, .open = smb2_open_file, .set_fid = smb2_set_fid, .close = smb2_close_file, .flush = smb2_flush_file, .async_readv = smb2_async_readv, .async_writev = smb2_async_writev, .sync_read = smb2_sync_read, .sync_write = smb2_sync_write, .query_dir_first = smb2_query_dir_first, .query_dir_next = smb2_query_dir_next, .close_dir = smb2_close_dir, .calc_smb_size = smb2_calc_size, .is_status_pending = smb2_is_status_pending, .oplock_response = smb2_oplock_response, .queryfs = smb2_queryfs, .mand_lock = smb2_mand_lock, .mand_unlock_range = smb2_unlock_range, .push_mand_locks = smb2_push_mandatory_locks, .get_lease_key = smb2_get_lease_key, .set_lease_key = smb2_set_lease_key, .new_lease_key = smb2_new_lease_key, .calc_signature = smb3_calc_signature, }; struct smb_version_values smb20_values = { .version_string = SMB20_VERSION_STRING, .protocol_id = SMB20_PROT_ID, .req_capabilities = 0, /* MBZ */ .large_lock_type = 0, .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, .header_size = sizeof(struct smb2_hdr), .max_header_size = MAX_SMB2_HDR_SIZE, .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, .lock_cmd = SMB2_LOCK, .cap_unix = 0, .cap_nt_find = SMB2_NT_FIND, .cap_large_files = SMB2_LARGE_FILES, .oplock_read = SMB2_OPLOCK_LEVEL_II, }; struct smb_version_values smb21_values = { .version_string = SMB21_VERSION_STRING, .protocol_id = SMB21_PROT_ID, .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */ .large_lock_type = 0, .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, .header_size = sizeof(struct smb2_hdr), .max_header_size = MAX_SMB2_HDR_SIZE, .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, .lock_cmd = SMB2_LOCK, .cap_unix = 0, .cap_nt_find = SMB2_NT_FIND, .cap_large_files = SMB2_LARGE_FILES, .oplock_read = SMB2_OPLOCK_LEVEL_II, }; struct smb_version_values smb30_values = { .version_string = SMB30_VERSION_STRING, .protocol_id = SMB30_PROT_ID, .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU, .large_lock_type = 0, .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK, .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK, .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK, .header_size = sizeof(struct smb2_hdr), .max_header_size = MAX_SMB2_HDR_SIZE, .read_rsp_size = sizeof(struct smb2_read_rsp) - 1, .lock_cmd = SMB2_LOCK, .cap_unix = 0, .cap_nt_find = SMB2_NT_FIND, .cap_large_files = SMB2_LARGE_FILES, .oplock_read = SMB2_OPLOCK_LEVEL_II, };