| /* |
| * SMB2 version specific operations |
| * |
| * Copyright (c) 2012, Jeff Layton <jlayton@redhat.com> |
| * |
| * 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 <linux/pagemap.h> |
| #include <linux/vfs.h> |
| #include <linux/falloc.h> |
| #include <linux/scatterlist.h> |
| #include <linux/uuid.h> |
| #include <crypto/aead.h> |
| #include "cifsglob.h" |
| #include "smb2pdu.h" |
| #include "smb2proto.h" |
| #include "cifsproto.h" |
| #include "cifs_debug.h" |
| #include "cifs_unicode.h" |
| #include "smb2status.h" |
| #include "smb2glob.h" |
| #include "cifs_ioctl.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; |
| if (enable_oplocks) { |
| server->oplocks = true; |
| server->oplock_credits = 1; |
| } else |
| server->oplocks = false; |
| |
| server->echo_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; |
| if (*val > 65000) { |
| *val = 65000; /* Don't get near 64K credits, avoid srv bugs */ |
| printk_once(KERN_WARNING "server overflowed SMB3 credits\n"); |
| } |
| 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) |
| { |
| struct smb2_sync_hdr *shdr = get_sync_hdr(mid->resp_buf); |
| |
| return le16_to_cpu(shdr->CreditRequest); |
| } |
| |
| static int |
| smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size, |
| unsigned int *num, unsigned int *credits) |
| { |
| int rc = 0; |
| unsigned int scredits; |
| |
| spin_lock(&server->req_lock); |
| while (1) { |
| if (server->credits <= 0) { |
| spin_unlock(&server->req_lock); |
| cifs_num_waiters_inc(server); |
| rc = wait_event_killable(server->request_q, |
| has_credits(server, &server->credits)); |
| cifs_num_waiters_dec(server); |
| if (rc) |
| return rc; |
| spin_lock(&server->req_lock); |
| } else { |
| if (server->tcpStatus == CifsExiting) { |
| spin_unlock(&server->req_lock); |
| return -ENOENT; |
| } |
| |
| scredits = server->credits; |
| /* can deadlock with reopen */ |
| if (scredits == 1) { |
| *num = SMB2_MAX_BUFFER_SIZE; |
| *credits = 0; |
| break; |
| } |
| |
| /* leave one credit for a possible reopen */ |
| scredits--; |
| *num = min_t(unsigned int, size, |
| scredits * SMB2_MAX_BUFFER_SIZE); |
| |
| *credits = DIV_ROUND_UP(*num, SMB2_MAX_BUFFER_SIZE); |
| server->credits -= *credits; |
| server->in_flight++; |
| break; |
| } |
| } |
| spin_unlock(&server->req_lock); |
| return rc; |
| } |
| |
| 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_sync_hdr *shdr = get_sync_hdr(buf); |
| __u64 wire_mid = le64_to_cpu(shdr->MessageId); |
| |
| if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) { |
| cifs_dbg(VFS, "encrypted frame parsing not supported yet"); |
| return NULL; |
| } |
| |
| spin_lock(&GlobalMid_Lock); |
| list_for_each_entry(mid, &server->pending_mid_q, qhead) { |
| if ((mid->mid == wire_mid) && |
| (mid->mid_state == MID_REQUEST_SUBMITTED) && |
| (mid->command == shdr->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_sync_hdr *shdr = get_sync_hdr(buf); |
| |
| cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n", |
| shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId, |
| shdr->ProcessId); |
| cifs_dbg(VFS, "smb buf %p len %u\n", buf, smb2_calc_size(buf)); |
| #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); |
| |
| if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) |
| wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE); |
| |
| 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); |
| |
| if (!(server->capabilities & SMB2_GLOBAL_CAP_LARGE_MTU)) |
| rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE); |
| |
| return rsize; |
| } |
| |
| #ifdef CONFIG_CIFS_STATS2 |
| static int |
| SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon) |
| { |
| int rc; |
| unsigned int ret_data_len = 0; |
| struct network_interface_info_ioctl_rsp *out_buf; |
| |
| 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) |
| cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc); |
| else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) { |
| cifs_dbg(VFS, "server returned bad net interface info buf\n"); |
| rc = -EINVAL; |
| } else { |
| /* Dump info on first interface */ |
| cifs_dbg(FYI, "Adapter Capability 0x%x\t", |
| le32_to_cpu(out_buf->Capability)); |
| cifs_dbg(FYI, "Link Speed %lld\n", |
| le64_to_cpu(out_buf->LinkSpeed)); |
| } |
| kfree(out_buf); |
| return rc; |
| } |
| #endif /* STATS2 */ |
| |
| static void |
| smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon) |
| { |
| int rc; |
| __le16 srch_path = 0; /* Null - open root of share */ |
| u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
| struct cifs_open_parms oparms; |
| struct cifs_fid fid; |
| |
| oparms.tcon = tcon; |
| oparms.desired_access = FILE_READ_ATTRIBUTES; |
| oparms.disposition = FILE_OPEN; |
| oparms.create_options = 0; |
| oparms.fid = &fid; |
| oparms.reconnect = false; |
| |
| rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL); |
| if (rc) |
| return; |
| |
| #ifdef CONFIG_CIFS_STATS2 |
| SMB3_request_interfaces(xid, tcon); |
| #endif /* STATS2 */ |
| |
| SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
| FS_ATTRIBUTE_INFORMATION); |
| SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
| FS_DEVICE_INFORMATION); |
| SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
| FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */ |
| SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
| return; |
| } |
| |
| static void |
| smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon) |
| { |
| int rc; |
| __le16 srch_path = 0; /* Null - open root of share */ |
| u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
| struct cifs_open_parms oparms; |
| struct cifs_fid fid; |
| |
| oparms.tcon = tcon; |
| oparms.desired_access = FILE_READ_ATTRIBUTES; |
| oparms.disposition = FILE_OPEN; |
| oparms.create_options = 0; |
| oparms.fid = &fid; |
| oparms.reconnect = false; |
| |
| rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL); |
| if (rc) |
| return; |
| |
| SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
| FS_ATTRIBUTE_INFORMATION); |
| SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
| FS_DEVICE_INFORMATION); |
| SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); |
| return; |
| } |
| |
| 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; |
| __le16 *utf16_path; |
| __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
| struct cifs_open_parms oparms; |
| struct cifs_fid fid; |
| |
| utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
| if (!utf16_path) |
| return -ENOMEM; |
| |
| oparms.tcon = tcon; |
| oparms.desired_access = FILE_READ_ATTRIBUTES; |
| oparms.disposition = FILE_OPEN; |
| oparms.create_options = 0; |
| oparms.fid = &fid; |
| oparms.reconnect = false; |
| |
| rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL); |
| if (rc) { |
| kfree(utf16_path); |
| return rc; |
| } |
| |
| rc = SMB2_close(xid, tcon, fid.persistent_fid, 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) + PATH_MAX * 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_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon) |
| { |
| seq_puts(m, "\n\tShare Capabilities:"); |
| if (tcon->capabilities & SMB2_SHARE_CAP_DFS) |
| seq_puts(m, " DFS,"); |
| if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY) |
| seq_puts(m, " CONTINUOUS AVAILABILITY,"); |
| if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT) |
| seq_puts(m, " SCALEOUT,"); |
| if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER) |
| seq_puts(m, " CLUSTER,"); |
| if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC) |
| seq_puts(m, " ASYMMETRIC,"); |
| if (tcon->capabilities == 0) |
| seq_puts(m, " None"); |
| if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE) |
| seq_puts(m, " Aligned,"); |
| if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE) |
| seq_puts(m, " Partition Aligned,"); |
| if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY) |
| seq_puts(m, " SSD,"); |
| if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED) |
| seq_puts(m, " TRIM-support,"); |
| |
| seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags); |
| if (tcon->perf_sector_size) |
| seq_printf(m, "\tOptimal sector size: 0x%x", |
| tcon->perf_sector_size); |
| } |
| |
| 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])); |
| 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(d_inode(cfile->dentry)); |
| struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server; |
| |
| cfile->fid.persistent_fid = fid->persistent_fid; |
| cfile->fid.volatile_fid = fid->volatile_fid; |
| server->ops->set_oplock_level(cinode, oplock, fid->epoch, |
| &fid->purge_cache); |
| cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode); |
| memcpy(cfile->fid.create_guid, fid->create_guid, 16); |
| } |
| |
| 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_request_res_key(const unsigned int xid, struct cifs_tcon *tcon, |
| u64 persistent_fid, u64 volatile_fid, |
| struct copychunk_ioctl *pcchunk) |
| { |
| int rc; |
| unsigned int ret_data_len; |
| struct resume_key_req *res_key; |
| |
| 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); |
| |
| if (rc) { |
| cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc); |
| goto req_res_key_exit; |
| } |
| if (ret_data_len < sizeof(struct resume_key_req)) { |
| cifs_dbg(VFS, "Invalid refcopy resume key length\n"); |
| rc = -EINVAL; |
| goto req_res_key_exit; |
| } |
| memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE); |
| |
| req_res_key_exit: |
| kfree(res_key); |
| return rc; |
| } |
| |
| static ssize_t |
| smb2_copychunk_range(const unsigned int xid, |
| struct cifsFileInfo *srcfile, |
| struct cifsFileInfo *trgtfile, u64 src_off, |
| u64 len, u64 dest_off) |
| { |
| int rc; |
| unsigned int ret_data_len; |
| struct copychunk_ioctl *pcchunk; |
| struct copychunk_ioctl_rsp *retbuf = NULL; |
| struct cifs_tcon *tcon; |
| int chunks_copied = 0; |
| bool chunk_sizes_updated = false; |
| ssize_t bytes_written, total_bytes_written = 0; |
| |
| pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL); |
| |
| if (pcchunk == NULL) |
| return -ENOMEM; |
| |
| cifs_dbg(FYI, "in smb2_copychunk_range - about to call request res key\n"); |
| /* Request a key from the server to identify the source of the copy */ |
| rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink), |
| srcfile->fid.persistent_fid, |
| srcfile->fid.volatile_fid, pcchunk); |
| |
| /* Note: request_res_key sets res_key null only if rc !=0 */ |
| if (rc) |
| goto cchunk_out; |
| |
| /* For now array only one chunk long, will make more flexible later */ |
| pcchunk->ChunkCount = cpu_to_le32(1); |
| pcchunk->Reserved = 0; |
| pcchunk->Reserved2 = 0; |
| |
| tcon = tlink_tcon(trgtfile->tlink); |
| |
| while (len > 0) { |
| pcchunk->SourceOffset = cpu_to_le64(src_off); |
| pcchunk->TargetOffset = cpu_to_le64(dest_off); |
| pcchunk->Length = |
| cpu_to_le32(min_t(u32, len, tcon->max_bytes_chunk)); |
| |
| /* 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, |
| sizeof(struct copychunk_ioctl), (char **)&retbuf, |
| &ret_data_len); |
| if (rc == 0) { |
| if (ret_data_len != |
| sizeof(struct copychunk_ioctl_rsp)) { |
| cifs_dbg(VFS, "invalid cchunk response size\n"); |
| rc = -EIO; |
| goto cchunk_out; |
| } |
| if (retbuf->TotalBytesWritten == 0) { |
| cifs_dbg(FYI, "no bytes copied\n"); |
| rc = -EIO; |
| goto cchunk_out; |
| } |
| /* |
| * Check if server claimed to write more than we asked |
| */ |
| if (le32_to_cpu(retbuf->TotalBytesWritten) > |
| le32_to_cpu(pcchunk->Length)) { |
| cifs_dbg(VFS, "invalid copy chunk response\n"); |
| rc = -EIO; |
| goto cchunk_out; |
| } |
| if (le32_to_cpu(retbuf->ChunksWritten) != 1) { |
| cifs_dbg(VFS, "invalid num chunks written\n"); |
| rc = -EIO; |
| goto cchunk_out; |
| } |
| chunks_copied++; |
| |
| bytes_written = le32_to_cpu(retbuf->TotalBytesWritten); |
| src_off += bytes_written; |
| dest_off += bytes_written; |
| len -= bytes_written; |
| total_bytes_written += bytes_written; |
| |
| cifs_dbg(FYI, "Chunks %d PartialChunk %d Total %zu\n", |
| le32_to_cpu(retbuf->ChunksWritten), |
| le32_to_cpu(retbuf->ChunkBytesWritten), |
| bytes_written); |
| } else if (rc == -EINVAL) { |
| if (ret_data_len != sizeof(struct copychunk_ioctl_rsp)) |
| goto cchunk_out; |
| |
| cifs_dbg(FYI, "MaxChunks %d BytesChunk %d MaxCopy %d\n", |
| le32_to_cpu(retbuf->ChunksWritten), |
| le32_to_cpu(retbuf->ChunkBytesWritten), |
| le32_to_cpu(retbuf->TotalBytesWritten)); |
| |
| /* |
| * Check if this is the first request using these sizes, |
| * (ie check if copy succeed once with original sizes |
| * and check if the server gave us different sizes after |
| * we already updated max sizes on previous request). |
| * if not then why is the server returning an error now |
| */ |
| if ((chunks_copied != 0) || chunk_sizes_updated) |
| goto cchunk_out; |
| |
| /* Check that server is not asking us to grow size */ |
| if (le32_to_cpu(retbuf->ChunkBytesWritten) < |
| tcon->max_bytes_chunk) |
| tcon->max_bytes_chunk = |
| le32_to_cpu(retbuf->ChunkBytesWritten); |
| else |
| goto cchunk_out; /* server gave us bogus size */ |
| |
| /* No need to change MaxChunks since already set to 1 */ |
| chunk_sizes_updated = true; |
| } else |
| goto cchunk_out; |
| } |
| |
| cchunk_out: |
| kfree(pcchunk); |
| kfree(retbuf); |
| if (rc) |
| return rc; |
| else |
| return total_bytes_written; |
| } |
| |
| 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 cifs_fid *pfid, |
| struct cifs_io_parms *parms, unsigned int *bytes_read, |
| char **buf, int *buf_type) |
| { |
| parms->persistent_fid = pfid->persistent_fid; |
| parms->volatile_fid = pfid->volatile_fid; |
| return SMB2_read(xid, parms, bytes_read, buf, buf_type); |
| } |
| |
| static int |
| smb2_sync_write(const unsigned int xid, struct cifs_fid *pfid, |
| struct cifs_io_parms *parms, unsigned int *written, |
| struct kvec *iov, unsigned long nr_segs) |
| { |
| |
| parms->persistent_fid = pfid->persistent_fid; |
| parms->volatile_fid = pfid->volatile_fid; |
| return SMB2_write(xid, parms, written, iov, nr_segs); |
| } |
| |
| /* Set or clear the SPARSE_FILE attribute based on value passed in setsparse */ |
| static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon, |
| struct cifsFileInfo *cfile, struct inode *inode, __u8 setsparse) |
| { |
| struct cifsInodeInfo *cifsi; |
| int rc; |
| |
| cifsi = CIFS_I(inode); |
| |
| /* if file already sparse don't bother setting sparse again */ |
| if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && setsparse) |
| return true; /* already sparse */ |
| |
| if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) && !setsparse) |
| return true; /* already not sparse */ |
| |
| /* |
| * Can't check for sparse support on share the usual way via the |
| * FS attribute info (FILE_SUPPORTS_SPARSE_FILES) on the share |
| * since Samba server doesn't set the flag on the share, yet |
| * supports the set sparse FSCTL and returns sparse correctly |
| * in the file attributes. If we fail setting sparse though we |
| * mark that server does not support sparse files for this share |
| * to avoid repeatedly sending the unsupported fsctl to server |
| * if the file is repeatedly extended. |
| */ |
| if (tcon->broken_sparse_sup) |
| return false; |
| |
| rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, |
| cfile->fid.volatile_fid, FSCTL_SET_SPARSE, |
| true /* is_fctl */, false /* use_ipc */, |
| &setsparse, 1, NULL, NULL); |
| if (rc) { |
| tcon->broken_sparse_sup = true; |
| cifs_dbg(FYI, "set sparse rc = %d\n", rc); |
| return false; |
| } |
| |
| if (setsparse) |
| cifsi->cifsAttrs |= FILE_ATTRIBUTE_SPARSE_FILE; |
| else |
| cifsi->cifsAttrs &= (~FILE_ATTRIBUTE_SPARSE_FILE); |
| |
| return true; |
| } |
| |
| 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); |
| struct inode *inode; |
| |
| /* |
| * If extending file more than one page make sparse. Many Linux fs |
| * make files sparse by default when extending via ftruncate |
| */ |
| inode = d_inode(cfile->dentry); |
| |
| if (!set_alloc && (size > inode->i_size + 8192)) { |
| __u8 set_sparse = 1; |
| |
| /* whether set sparse succeeds or not, extend the file */ |
| smb2_set_sparse(xid, tcon, cfile, inode, set_sparse); |
| } |
| |
| return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid, |
| cfile->fid.volatile_fid, cfile->pid, &eof, false); |
| } |
| |
| static int |
| smb2_duplicate_extents(const unsigned int xid, |
| struct cifsFileInfo *srcfile, |
| struct cifsFileInfo *trgtfile, u64 src_off, |
| u64 len, u64 dest_off) |
| { |
| int rc; |
| unsigned int ret_data_len; |
| struct duplicate_extents_to_file dup_ext_buf; |
| struct cifs_tcon *tcon = tlink_tcon(trgtfile->tlink); |
| |
| /* server fileays advertise duplicate extent support with this flag */ |
| if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) & |
| FILE_SUPPORTS_BLOCK_REFCOUNTING) == 0) |
| return -EOPNOTSUPP; |
| |
| dup_ext_buf.VolatileFileHandle = srcfile->fid.volatile_fid; |
| dup_ext_buf.PersistentFileHandle = srcfile->fid.persistent_fid; |
| dup_ext_buf.SourceFileOffset = cpu_to_le64(src_off); |
| dup_ext_buf.TargetFileOffset = cpu_to_le64(dest_off); |
| dup_ext_buf.ByteCount = cpu_to_le64(len); |
| cifs_dbg(FYI, "duplicate extents: src off %lld dst off %lld len %lld", |
| src_off, dest_off, len); |
| |
| rc = smb2_set_file_size(xid, tcon, trgtfile, dest_off + len, false); |
| if (rc) |
| goto duplicate_extents_out; |
| |
| rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid, |
| trgtfile->fid.volatile_fid, |
| FSCTL_DUPLICATE_EXTENTS_TO_FILE, |
| true /* is_fsctl */, false /* use_ipc */, |
| (char *)&dup_ext_buf, |
| sizeof(struct duplicate_extents_to_file), |
| NULL, |
| &ret_data_len); |
| |
| if (ret_data_len > 0) |
| cifs_dbg(FYI, "non-zero response length in duplicate extents"); |
| |
| duplicate_extents_out: |
| return rc; |
| } |
| |
| static int |
| smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, |
| struct cifsFileInfo *cfile) |
| { |
| return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid, |
| cfile->fid.volatile_fid); |
| } |
| |
| static int |
| smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon, |
| struct cifsFileInfo *cfile) |
| { |
| struct fsctl_set_integrity_information_req integr_info; |
| unsigned int ret_data_len; |
| |
| integr_info.ChecksumAlgorithm = cpu_to_le16(CHECKSUM_TYPE_UNCHANGED); |
| integr_info.Flags = 0; |
| integr_info.Reserved = 0; |
| |
| return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, |
| cfile->fid.volatile_fid, |
| FSCTL_SET_INTEGRITY_INFORMATION, |
| true /* is_fsctl */, false /* use_ipc */, |
| (char *)&integr_info, |
| sizeof(struct fsctl_set_integrity_information_req), |
| NULL, |
| &ret_data_len); |
| |
| } |
| |
| static int |
| smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon, |
| struct cifsFileInfo *cfile, void __user *ioc_buf) |
| { |
| char *retbuf = NULL; |
| unsigned int ret_data_len = 0; |
| int rc; |
| struct smb_snapshot_array snapshot_in; |
| |
| rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid, |
| cfile->fid.volatile_fid, |
| FSCTL_SRV_ENUMERATE_SNAPSHOTS, |
| true /* is_fsctl */, false /* use_ipc */, |
| NULL, 0 /* no input data */, |
| (char **)&retbuf, |
| &ret_data_len); |
| cifs_dbg(FYI, "enum snaphots ioctl returned %d and ret buflen is %d\n", |
| rc, ret_data_len); |
| if (rc) |
| return rc; |
| |
| if (ret_data_len && (ioc_buf != NULL) && (retbuf != NULL)) { |
| /* Fixup buffer */ |
| if (copy_from_user(&snapshot_in, ioc_buf, |
| sizeof(struct smb_snapshot_array))) { |
| rc = -EFAULT; |
| kfree(retbuf); |
| return rc; |
| } |
| if (snapshot_in.snapshot_array_size < sizeof(struct smb_snapshot_array)) { |
| rc = -ERANGE; |
| return rc; |
| } |
| |
| if (ret_data_len > snapshot_in.snapshot_array_size) |
| ret_data_len = snapshot_in.snapshot_array_size; |
| |
| if (copy_to_user(ioc_buf, retbuf, ret_data_len)) |
| rc = -EFAULT; |
| } |
| |
| kfree(retbuf); |
| return rc; |
| } |
| |
| 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; |
| struct cifs_open_parms oparms; |
| |
| utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); |
| if (!utf16_path) |
| return -ENOMEM; |
| |
| oparms.tcon = tcon; |
| oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA; |
| oparms.disposition = FILE_OPEN; |
| oparms.create_options = 0; |
| oparms.fid = fid; |
| oparms.reconnect = false; |
| |
| rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, 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; |
| |
| rc = SMB2_query_directory(xid, tcon, fid->persistent_fid, |
| fid->volatile_fid, 0, srch_inf); |
| if (rc) { |
| cifs_dbg(VFS, "query directory failed\n"); |
| SMB2_close(xid, tcon, fid->persistent_fid, 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_sync_hdr *shdr = get_sync_hdr(buf); |
| |
| if (shdr->Status != STATUS_PENDING) |
| return false; |
| |
| if (!length) { |
| spin_lock(&server->req_lock); |
| server->credits += le16_to_cpu(shdr->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, |
| CIFS_CACHE_READ(cinode) ? 1 : 0); |
| } |
| |
| static int |
| smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon, |
| struct kstatfs *buf) |
| { |
| int rc; |
| __le16 srch_path = 0; /* Null - open root of share */ |
| u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
| struct cifs_open_parms oparms; |
| struct cifs_fid fid; |
| |
| oparms.tcon = tcon; |
| oparms.desired_access = FILE_READ_ATTRIBUTES; |
| oparms.disposition = FILE_OPEN; |
| oparms.create_options = 0; |
| oparms.fid = &fid; |
| oparms.reconnect = false; |
| |
| rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL); |
| if (rc) |
| return rc; |
| buf->f_type = SMB2_MAGIC_NUMBER; |
| rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid, |
| buf); |
| SMB2_close(xid, tcon, fid.persistent_fid, 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) |
| { |
| generate_random_uuid(fid->lease_key); |
| } |
| |
| static int |
| smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses, |
| const char *search_name, |
| struct dfs_info3_param **target_nodes, |
| unsigned int *num_of_nodes, |
| const struct nls_table *nls_codepage, int remap) |
| { |
| int rc; |
| __le16 *utf16_path = NULL; |
| int utf16_path_len = 0; |
| struct cifs_tcon *tcon; |
| struct fsctl_get_dfs_referral_req *dfs_req = NULL; |
| struct get_dfs_referral_rsp *dfs_rsp = NULL; |
| u32 dfs_req_size = 0, dfs_rsp_size = 0; |
| |
| cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name); |
| |
| /* |
| * Use any tcon from the current session. Here, the first one. |
| */ |
| 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) { |
| cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n", |
| ses); |
| rc = -ENOTCONN; |
| goto out; |
| } |
| |
| utf16_path = cifs_strndup_to_utf16(search_name, PATH_MAX, |
| &utf16_path_len, |
| nls_codepage, remap); |
| if (!utf16_path) { |
| rc = -ENOMEM; |
| goto out; |
| } |
| |
| dfs_req_size = sizeof(*dfs_req) + utf16_path_len; |
| dfs_req = kzalloc(dfs_req_size, GFP_KERNEL); |
| if (!dfs_req) { |
| rc = -ENOMEM; |
| goto out; |
| } |
| |
| /* Highest DFS referral version understood */ |
| dfs_req->MaxReferralLevel = DFS_VERSION; |
| |
| /* Path to resolve in an UTF-16 null-terminated string */ |
| 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 */, |
| (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) { |
| cifs_dbg(VFS, "ioctl error in smb2_get_dfs_refer rc=%d\n", rc); |
| goto out; |
| } |
| |
| rc = parse_dfs_referrals(dfs_rsp, dfs_rsp_size, |
| num_of_nodes, target_nodes, |
| nls_codepage, remap, search_name, |
| true /* is_unicode */); |
| if (rc) { |
| cifs_dbg(VFS, "parse error in smb2_get_dfs_refer rc=%d\n", rc); |
| goto out; |
| } |
| |
| out: |
| if (tcon) { |
| spin_lock(&cifs_tcp_ses_lock); |
| tcon->tc_count--; |
| spin_unlock(&cifs_tcp_ses_lock); |
| } |
| kfree(utf16_path); |
| kfree(dfs_req); |
| kfree(dfs_rsp); |
| return rc; |
| } |
| #define SMB2_SYMLINK_STRUCT_SIZE \ |
| (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp)) |
| |
| static int |
| smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, |
| const char *full_path, char **target_path, |
| struct cifs_sb_info *cifs_sb) |
| { |
| int rc; |
| __le16 *utf16_path; |
| __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; |
| struct cifs_open_parms oparms; |
| struct cifs_fid fid; |
| struct smb2_err_rsp *err_buf = NULL; |
| struct smb2_symlink_err_rsp *symlink; |
| unsigned int sub_len; |
| unsigned int sub_offset; |
| unsigned int print_len; |
| unsigned int print_offset; |
| |
| cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); |
| |
| utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); |
| if (!utf16_path) |
| return -ENOMEM; |
| |
| oparms.tcon = tcon; |
| oparms.desired_access = FILE_READ_ATTRIBUTES; |
| oparms.disposition = FILE_OPEN; |
| oparms.create_options = 0; |
| oparms.fid = &fid; |
| oparms.reconnect = false; |
| |
| rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf); |
| |
| if (!rc || !err_buf) { |
| kfree(utf16_path); |
| return -ENOENT; |
| } |
| |
| if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) || |
| get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) { |
| kfree(utf16_path); |
| return -ENOENT; |
| } |
| |
| /* open must fail on symlink - reset rc */ |
| rc = 0; |
| symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData; |
| sub_len = le16_to_cpu(symlink->SubstituteNameLength); |
| sub_offset = le16_to_cpu(symlink->SubstituteNameOffset); |
| print_len = le16_to_cpu(symlink->PrintNameLength); |
| print_offset = le16_to_cpu(symlink->PrintNameOffset); |
| |
| if (get_rfc1002_length(err_buf) + 4 < |
| SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) { |
| kfree(utf16_path); |
| return -ENOENT; |
| } |
| |
| if (get_rfc1002_length(err_buf) + 4 < |
| SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) { |
| kfree(utf16_path); |
| return -ENOENT; |
| } |
| |
| *target_path = cifs_strndup_from_utf16( |
| (char *)symlink->PathBuffer + sub_offset, |
| sub_len, true, cifs_sb->local_nls); |
| if (!(*target_path)) { |
| kfree(utf16_path); |
| return -ENOMEM; |
| } |
| convert_delimiter(*target_path, '/'); |
| cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path); |
| kfree(utf16_path); |
| return rc; |
| } |
| |
| static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon, |
| loff_t offset, loff_t len, bool keep_size) |
| { |
| struct inode *inode; |
| struct cifsInodeInfo *cifsi; |
| struct cifsFileInfo *cfile = file->private_data; |
| struct file_zero_data_information fsctl_buf; |
| long rc; |
| unsigned int xid; |
| |
| xid = get_xid(); |
| |
| inode = d_inode(cfile->dentry); |
| cifsi = CIFS_I(inode); |
| |
| /* if file not oplocked can't be sure whether asking to extend size */ |
| if (!CIFS_CACHE_READ(cifsi)) |
| if (keep_size == false) |
| return -EOPNOTSUPP; |
| |
| /* |
| * Must check if file sparse since fallocate -z (zero range) assumes |
| * non-sparse allocation |
| */ |
| if (!(cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE)) |
| return -EOPNOTSUPP; |
| |
| /* |
| * need to make sure we are not asked to extend the file since the SMB3 |
| * fsctl does not change the file size. In the future we could change |
| * this to zero the first part of the range then set the file size |
| * which for a non sparse file would zero the newly extended range |
| */ |
| if (keep_size == false) |
| if (i_size_read(inode) < offset + len) |
| return -EOPNOTSUPP; |
| |
| cifs_dbg(FYI, "offset %lld len %lld", offset, len); |
| |
| fsctl_buf.FileOffset = cpu_to_le64(offset); |
| fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); |
| |
| 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, |
| sizeof(struct file_zero_data_information), NULL, NULL); |
| free_xid(xid); |
| return rc; |
| } |
| |
| static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon, |
| loff_t offset, loff_t len) |
| { |
| struct inode *inode; |
| struct cifsInodeInfo *cifsi; |
| struct cifsFileInfo *cfile = file->private_data; |
| struct file_zero_data_information fsctl_buf; |
| long rc; |
| unsigned int xid; |
| __u8 set_sparse = 1; |
| |
| xid = get_xid(); |
| |
| inode = d_inode(cfile->dentry); |
| cifsi = CIFS_I(inode); |
| |
| /* Need to make file sparse, if not already, before freeing range. */ |
| /* Consider adding equivalent for compressed since it could also work */ |
| if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) |
| return -EOPNOTSUPP; |
| |
| cifs_dbg(FYI, "offset %lld len %lld", offset, len); |
| |
| fsctl_buf.FileOffset = cpu_to_le64(offset); |
| fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len); |
| |
| 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, |
| sizeof(struct file_zero_data_information), NULL, NULL); |
| free_xid(xid); |
| return rc; |
| } |
| |
| static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon, |
| loff_t off, loff_t len, bool keep_size) |
| { |
| struct inode *inode; |
| struct cifsInodeInfo *cifsi; |
| struct cifsFileInfo *cfile = file->private_data; |
| long rc = -EOPNOTSUPP; |
| unsigned int xid; |
| |
| xid = get_xid(); |
| |
| inode = d_inode(cfile->dentry); |
| cifsi = CIFS_I(inode); |
| |
| /* if file not oplocked can't be sure whether asking to extend size */ |
| if (!CIFS_CACHE_READ(cifsi)) |
| if (keep_size == false) |
| return -EOPNOTSUPP; |
| |
| /* |
| * Files are non-sparse by default so falloc may be a no-op |
| * Must check if file sparse. If not sparse, and not extending |
| * then no need to do anything since file already allocated |
| */ |
| if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) { |
| if (keep_size == true) |
| return 0; |
| /* check if extending file */ |
| else if (i_size_read(inode) >= off + len) |
| /* not extending file and already not sparse */ |
| return 0; |
| /* BB: in future add else clause to extend file */ |
| else |
| return -EOPNOTSUPP; |
| } |
| |
| if ((keep_size == true) || (i_size_read(inode) >= off + len)) { |
| /* |
| * Check if falloc starts within first few pages of file |
| * and ends within a few pages of the end of file to |
| * ensure that most of file is being forced to be |
| * fallocated now. If so then setting whole file sparse |
| * ie potentially making a few extra pages at the beginning |
| * or end of the file non-sparse via set_sparse is harmless. |
| */ |
| if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) |
| return -EOPNOTSUPP; |
| |
| rc = smb2_set_sparse(xid, tcon, cfile, inode, false); |
| } |
| /* BB: else ... in future add code to extend file and set sparse */ |
| |
| |
| free_xid(xid); |
| return rc; |
| } |
| |
| |
| static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode, |
| loff_t off, loff_t len) |
| { |
| /* KEEP_SIZE already checked for by do_fallocate */ |
| if (mode & FALLOC_FL_PUNCH_HOLE) |
| return smb3_punch_hole(file, tcon, off, len); |
| else if (mode & FALLOC_FL_ZERO_RANGE) { |
| if (mode & FALLOC_FL_KEEP_SIZE) |
| return smb3_zero_range(file, tcon, off, len, true); |
| return smb3_zero_range(file, tcon, off, len, false); |
| } else if (mode == FALLOC_FL_KEEP_SIZE) |
| return smb3_simple_falloc(file, tcon, off, len, true); |
| else if (mode == 0) |
| return smb3_simple_falloc(file, tcon, off, len, false); |
| |
| return -EOPNOTSUPP; |
| } |
| |
| static void |
| smb2_downgrade_oplock(struct TCP_Server_Info *server, |
| struct cifsInodeInfo *cinode, bool set_level2) |
| { |
| if (set_level2) |
| server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II, |
| 0, NULL); |
| else |
| server->ops->set_oplock_level(cinode, 0, 0, NULL); |
| } |
| |
| static void |
| smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
| unsigned int epoch, bool *purge_cache) |
| { |
| oplock &= 0xFF; |
| if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) |
| return; |
| if (oplock == SMB2_OPLOCK_LEVEL_BATCH) { |
| cinode->oplock = CIFS_CACHE_RHW_FLG; |
| cifs_dbg(FYI, "Batch Oplock granted on inode %p\n", |
| &cinode->vfs_inode); |
| } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) { |
| cinode->oplock = CIFS_CACHE_RW_FLG; |
| cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n", |
| &cinode->vfs_inode); |
| } else if (oplock == SMB2_OPLOCK_LEVEL_II) { |
| cinode->oplock = CIFS_CACHE_READ_FLG; |
| cifs_dbg(FYI, "Level II Oplock granted on inode %p\n", |
| &cinode->vfs_inode); |
| } else |
| cinode->oplock = 0; |
| } |
| |
| static void |
| smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
| unsigned int epoch, bool *purge_cache) |
| { |
| char message[5] = {0}; |
| |
| oplock &= 0xFF; |
| if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE) |
| return; |
| |
| cinode->oplock = 0; |
| if (oplock & SMB2_LEASE_READ_CACHING_HE) { |
| cinode->oplock |= CIFS_CACHE_READ_FLG; |
| strcat(message, "R"); |
| } |
| if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) { |
| cinode->oplock |= CIFS_CACHE_HANDLE_FLG; |
| strcat(message, "H"); |
| } |
| if (oplock & SMB2_LEASE_WRITE_CACHING_HE) { |
| cinode->oplock |= CIFS_CACHE_WRITE_FLG; |
| strcat(message, "W"); |
| } |
| if (!cinode->oplock) |
| strcat(message, "None"); |
| cifs_dbg(FYI, "%s Lease granted on inode %p\n", message, |
| &cinode->vfs_inode); |
| } |
| |
| static void |
| smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, |
| unsigned int epoch, bool *purge_cache) |
| { |
| unsigned int old_oplock = cinode->oplock; |
| |
| smb21_set_oplock_level(cinode, oplock, epoch, purge_cache); |
| |
| if (purge_cache) { |
| *purge_cache = false; |
| if (old_oplock == CIFS_CACHE_READ_FLG) { |
| if (cinode->oplock == CIFS_CACHE_READ_FLG && |
| (epoch - cinode->epoch > 0)) |
| *purge_cache = true; |
| else if (cinode->oplock == CIFS_CACHE_RH_FLG && |
| (epoch - cinode->epoch > 1)) |
| *purge_cache = true; |
| else if (cinode->oplock == CIFS_CACHE_RHW_FLG && |
| (epoch - cinode->epoch > 1)) |
| *purge_cache = true; |
| else if (cinode->oplock == 0 && |
| (epoch - cinode->epoch > 0)) |
| *purge_cache = true; |
| } else if (old_oplock == CIFS_CACHE_RH_FLG) { |
| if (cinode->oplock == CIFS_CACHE_RH_FLG && |
| (epoch - cinode->epoch > 0)) |
| *purge_cache = true; |
| else if (cinode->oplock == CIFS_CACHE_RHW_FLG && |
| (epoch - cinode->epoch > 1)) |
| *purge_cache = true; |
| } |
| cinode->epoch = epoch; |
| } |
| } |
| |
| static bool |
| smb2_is_read_op(__u32 oplock) |
| { |
| return oplock == SMB2_OPLOCK_LEVEL_II; |
| } |
| |
| static bool |
| smb21_is_read_op(__u32 oplock) |
| { |
| return (oplock & SMB2_LEASE_READ_CACHING_HE) && |
| !(oplock & SMB2_LEASE_WRITE_CACHING_HE); |
| } |
| |
| static __le32 |
| map_oplock_to_lease(u8 oplock) |
| { |
| if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) |
| return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING; |
| else if (oplock == SMB2_OPLOCK_LEVEL_II) |
| return SMB2_LEASE_READ_CACHING; |
| else if (oplock == SMB2_OPLOCK_LEVEL_BATCH) |
| return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING | |
| SMB2_LEASE_WRITE_CACHING; |
| return 0; |
| } |
| |
| static char * |
| smb2_create_lease_buf(u8 *lease_key, u8 oplock) |
| { |
| struct create_lease *buf; |
| |
| buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL); |
| if (!buf) |
| return NULL; |
| |
| buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key)); |
| buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8))); |
| buf->lcontext.LeaseState = map_oplock_to_lease(oplock); |
| |
| buf->ccontext.DataOffset = cpu_to_le16(offsetof |
| (struct create_lease, lcontext)); |
| buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context)); |
| buf->ccontext.NameOffset = cpu_to_le16(offsetof |
| (struct create_lease, Name)); |
| buf->ccontext.NameLength = cpu_to_le16(4); |
| /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
| buf->Name[0] = 'R'; |
| buf->Name[1] = 'q'; |
| buf->Name[2] = 'L'; |
| buf->Name[3] = 's'; |
| return (char *)buf; |
| } |
| |
| static char * |
| smb3_create_lease_buf(u8 *lease_key, u8 oplock) |
| { |
| struct create_lease_v2 *buf; |
| |
| buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL); |
| if (!buf) |
| return NULL; |
| |
| buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key)); |
| buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8))); |
| buf->lcontext.LeaseState = map_oplock_to_lease(oplock); |
| |
| buf->ccontext.DataOffset = cpu_to_le16(offsetof |
| (struct create_lease_v2, lcontext)); |
| buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2)); |
| buf->ccontext.NameOffset = cpu_to_le16(offsetof |
| (struct create_lease_v2, Name)); |
| buf->ccontext.NameLength = cpu_to_le16(4); |
| /* SMB2_CREATE_REQUEST_LEASE is "RqLs" */ |
| buf->Name[0] = 'R'; |
| buf->Name[1] = 'q'; |
| buf->Name[2] = 'L'; |
| buf->Name[3] = 's'; |
| return (char *)buf; |
| } |
| |
| static __u8 |
| smb2_parse_lease_buf(void *buf, unsigned int *epoch) |
| { |
| struct create_lease *lc = (struct create_lease *)buf; |
| |
| *epoch = 0; /* not used */ |
| if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS) |
| return SMB2_OPLOCK_LEVEL_NOCHANGE; |
| return le32_to_cpu(lc->lcontext.LeaseState); |
| } |
| |
| static __u8 |
| smb3_parse_lease_buf(void *buf, unsigned int *epoch) |
| { |
| struct create_lease_v2 *lc = (struct create_lease_v2 *)buf; |
| |
| *epoch = le16_to_cpu(lc->lcontext.Epoch); |
| if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS) |
| return SMB2_OPLOCK_LEVEL_NOCHANGE; |
| return le32_to_cpu(lc->lcontext.LeaseState); |
| } |
| |
| static unsigned int |
| smb2_wp_retry_size(struct inode *inode) |
| { |
| return min_t(unsigned int, CIFS_SB(inode->i_sb)->wsize, |
| SMB2_MAX_BUFFER_SIZE); |
| } |
| |
| static bool |
| smb2_dir_needs_close(struct cifsFileInfo *cfile) |
| { |
| return !cfile->invalidHandle; |
| } |
| |
| static void |
| fill_transform_hdr(struct smb2_transform_hdr *tr_hdr, struct smb_rqst *old_rq) |
| { |
| struct smb2_sync_hdr *shdr = |
| (struct smb2_sync_hdr *)old_rq->rq_iov[1].iov_base; |
| unsigned int orig_len = get_rfc1002_length(old_rq->rq_iov[0].iov_base); |
| |
| memset(tr_hdr, 0, sizeof(struct smb2_transform_hdr)); |
| tr_hdr->ProtocolId = SMB2_TRANSFORM_PROTO_NUM; |
| tr_hdr->OriginalMessageSize = cpu_to_le32(orig_len); |
| tr_hdr->Flags = cpu_to_le16(0x01); |
| get_random_bytes(&tr_hdr->Nonce, SMB3_AES128CMM_NONCE); |
| memcpy(&tr_hdr->SessionId, &shdr->SessionId, 8); |
| inc_rfc1001_len(tr_hdr, sizeof(struct smb2_transform_hdr) - 4); |
| inc_rfc1001_len(tr_hdr, orig_len); |
| } |
| |
| static struct scatterlist * |
| init_sg(struct smb_rqst *rqst, u8 *sign) |
| { |
| unsigned int sg_len = rqst->rq_nvec + rqst->rq_npages + 1; |
| unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24; |
| struct scatterlist *sg; |
| unsigned int i; |
| unsigned int j; |
| |
| sg = kmalloc_array(sg_len, sizeof(struct scatterlist), GFP_KERNEL); |
| if (!sg) |
| return NULL; |
| |
| sg_init_table(sg, sg_len); |
| sg_set_buf(&sg[0], rqst->rq_iov[0].iov_base + 24, assoc_data_len); |
| for (i = 1; i < rqst->rq_nvec; i++) |
| sg_set_buf(&sg[i], rqst->rq_iov[i].iov_base, |
| rqst->rq_iov[i].iov_len); |
| for (j = 0; i < sg_len - 1; i++, j++) { |
| unsigned int len = (j < rqst->rq_npages - 1) ? rqst->rq_pagesz |
| : rqst->rq_tailsz; |
| sg_set_page(&sg[i], rqst->rq_pages[j], len, 0); |
| } |
| sg_set_buf(&sg[sg_len - 1], sign, SMB2_SIGNATURE_SIZE); |
| return sg; |
| } |
| |
| struct cifs_crypt_result { |
| int err; |
| struct completion completion; |
| }; |
| |
| static void cifs_crypt_complete(struct crypto_async_request *req, int err) |
| { |
| struct cifs_crypt_result *res = req->data; |
| |
| if (err == -EINPROGRESS) |
| return; |
| |
| res->err = err; |
| complete(&res->completion); |
| } |
| |
| static int |
| smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key) |
| { |
| struct cifs_ses *ses; |
| u8 *ses_enc_key; |
| |
| spin_lock(&cifs_tcp_ses_lock); |
| list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { |
| if (ses->Suid != ses_id) |
| continue; |
| ses_enc_key = enc ? ses->smb3encryptionkey : |
| ses->smb3decryptionkey; |
| memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE); |
| spin_unlock(&cifs_tcp_ses_lock); |
| return 0; |
| } |
| spin_unlock(&cifs_tcp_ses_lock); |
| |
| return 1; |
| } |
| /* |
| * Encrypt or decrypt @rqst message. @rqst has the following format: |
| * iov[0] - transform header (associate data), |
| * iov[1-N] and pages - data to encrypt. |
| * On success return encrypted data in iov[1-N] and pages, leave iov[0] |
| * untouched. |
| */ |
| static int |
| crypt_message(struct TCP_Server_Info *server, struct smb_rqst *rqst, int enc) |
| { |
| struct smb2_transform_hdr *tr_hdr = |
| (struct smb2_transform_hdr *)rqst->rq_iov[0].iov_base; |
| unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 24; |
| int rc = 0; |
| struct scatterlist *sg; |
| u8 sign[SMB2_SIGNATURE_SIZE] = {}; |
| u8 key[SMB3_SIGN_KEY_SIZE]; |
| struct aead_request *req; |
| char *iv; |
| unsigned int iv_len; |
| struct cifs_crypt_result result = {0, }; |
| struct crypto_aead *tfm; |
| unsigned int crypt_len = le32_to_cpu(tr_hdr->OriginalMessageSize); |
| |
| init_completion(&result.completion); |
| |
| rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key); |
| if (rc) { |
| cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__, |
| enc ? "en" : "de"); |
| return 0; |
| } |
| |
| rc = smb3_crypto_aead_allocate(server); |
| if (rc) { |
| cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__); |
| return rc; |
| } |
| |
| tfm = enc ? server->secmech.ccmaesencrypt : |
| server->secmech.ccmaesdecrypt; |
| rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE); |
| if (rc) { |
| cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc); |
| return rc; |
| } |
| |
| rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE); |
| if (rc) { |
| cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc); |
| return rc; |
| } |
| |
| req = aead_request_alloc(tfm, GFP_KERNEL); |
| if (!req) { |
| cifs_dbg(VFS, "%s: Failed to alloc aead request", __func__); |
| return -ENOMEM; |
| } |
| |
| if (!enc) { |
| memcpy(sign, &tr_hdr->Signature, SMB2_SIGNATURE_SIZE); |
| crypt_len += SMB2_SIGNATURE_SIZE; |
| } |
| |
| sg = init_sg(rqst, sign); |
| if (!sg) { |
| cifs_dbg(VFS, "%s: Failed to init sg %d", __func__, rc); |
| goto free_req; |
| } |
| |
| iv_len = crypto_aead_ivsize(tfm); |
| iv = kzalloc(iv_len, GFP_KERNEL); |
| if (!iv) { |
| cifs_dbg(VFS, "%s: Failed to alloc IV", __func__); |
| goto free_sg; |
| } |
| iv[0] = 3; |
| memcpy(iv + 1, (char *)tr_hdr->Nonce, SMB3_AES128CMM_NONCE); |
| |
| aead_request_set_crypt(req, sg, sg, crypt_len, iv); |
| aead_request_set_ad(req, assoc_data_len); |
| |
| aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, |
| cifs_crypt_complete, &result); |
| |
| rc = enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req); |
| |
| if (rc == -EINPROGRESS || rc == -EBUSY) { |
| wait_for_completion(&result.completion); |
| rc = result.err; |
| } |
| |
| if (!rc && enc) |
| memcpy(&tr_hdr->Signature, sign, SMB2_SIGNATURE_SIZE); |
| |
| kfree(iv); |
| free_sg: |
| kfree(sg); |
| free_req: |
| kfree(req); |
| return rc; |
| } |
| |
| static int |
| smb3_init_transform_rq(struct TCP_Server_Info *server, struct smb_rqst *new_rq, |
| struct smb_rqst *old_rq) |
| { |
| struct kvec *iov; |
| struct page **pages; |
| struct smb2_transform_hdr *tr_hdr; |
| unsigned int npages = old_rq->rq_npages; |
| int i; |
| int rc = -ENOMEM; |
| |
| pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); |
| if (!pages) |
| return rc; |
| |
| new_rq->rq_pages = pages; |
| new_rq->rq_npages = old_rq->rq_npages; |
| new_rq->rq_pagesz = old_rq->rq_pagesz; |
| new_rq->rq_tailsz = old_rq->rq_tailsz; |
| |
| for (i = 0; i < npages; i++) { |
| pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); |
| if (!pages[i]) |
| goto err_free_pages; |
| } |
| |
| iov = kmalloc_array(old_rq->rq_nvec, sizeof(struct kvec), GFP_KERNEL); |
| if (!iov) |
| goto err_free_pages; |
| |
| /* copy all iovs from the old except the 1st one (rfc1002 length) */ |
| memcpy(&iov[1], &old_rq->rq_iov[1], |
| sizeof(struct kvec) * (old_rq->rq_nvec - 1)); |
| new_rq->rq_iov = iov; |
| new_rq->rq_nvec = old_rq->rq_nvec; |
| |
| tr_hdr = kmalloc(sizeof(struct smb2_transform_hdr), GFP_KERNEL); |
| if (!tr_hdr) |
| goto err_free_iov; |
| |
| /* fill the 1st iov with a transform header */ |
| fill_transform_hdr(tr_hdr, old_rq); |
| new_rq->rq_iov[0].iov_base = tr_hdr; |
| new_rq->rq_iov[0].iov_len = sizeof(struct smb2_transform_hdr); |
| |
| /* copy pages form the old */ |
| for (i = 0; i < npages; i++) { |
| char *dst = kmap(new_rq->rq_pages[i]); |
| char *src = kmap(old_rq->rq_pages[i]); |
| unsigned int len = (i < npages - 1) ? new_rq->rq_pagesz : |
| new_rq->rq_tailsz; |
| memcpy(dst, src, len); |
| kunmap(new_rq->rq_pages[i]); |
| kunmap(old_rq->rq_pages[i]); |
| } |
| |
| rc = crypt_message(server, new_rq, 1); |
| cifs_dbg(FYI, "encrypt message returned %d", rc); |
| if (rc) |
| goto err_free_tr_hdr; |
| |
| return rc; |
| |
| err_free_tr_hdr: |
| kfree(tr_hdr); |
| err_free_iov: |
| kfree(iov); |
| err_free_pages: |
| for (i = i - 1; i >= 0; i--) |
| put_page(pages[i]); |
| kfree(pages); |
| return rc; |
| } |
| |
| static void |
| smb3_free_transform_rq(struct smb_rqst *rqst) |
| { |
| int i = rqst->rq_npages - 1; |
| |
| for (; i >= 0; i--) |
| put_page(rqst->rq_pages[i]); |
| kfree(rqst->rq_pages); |
| /* free transform header */ |
| kfree(rqst->rq_iov[0].iov_base); |
| kfree(rqst->rq_iov); |
| } |
| |
| static int |
| smb3_is_transform_hdr(void *buf) |
| { |
| struct smb2_transform_hdr *trhdr = buf; |
| |
| return trhdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM; |
| } |
| |
| static int |
| decrypt_raw_data(struct TCP_Server_Info *server, char *buf, |
| unsigned int buf_data_size, struct page **pages, |
| unsigned int npages, unsigned int page_data_size) |
| { |
| struct kvec iov[2]; |
| struct smb_rqst rqst = {NULL}; |
| struct smb2_hdr *hdr; |
| int rc; |
| |
| iov[0].iov_base = buf; |
| iov[0].iov_len = sizeof(struct smb2_transform_hdr); |
| iov[1].iov_base = buf + sizeof(struct smb2_transform_hdr); |
| iov[1].iov_len = buf_data_size; |
| |
| rqst.rq_iov = iov; |
| rqst.rq_nvec = 2; |
| rqst.rq_pages = pages; |
| rqst.rq_npages = npages; |
| rqst.rq_pagesz = PAGE_SIZE; |
| rqst.rq_tailsz = (page_data_size % PAGE_SIZE) ? : PAGE_SIZE; |
| |
| rc = crypt_message(server, &rqst, 0); |
| cifs_dbg(FYI, "decrypt message returned %d\n", rc); |
| |
| if (rc) |
| return rc; |
| |
| memmove(buf + 4, iov[1].iov_base, buf_data_size); |
| hdr = (struct smb2_hdr *)buf; |
| hdr->smb2_buf_length = cpu_to_be32(buf_data_size + page_data_size); |
| server->total_read = buf_data_size + page_data_size + 4; |
| |
| return rc; |
| } |
| |
| static int |
| read_data_into_pages(struct TCP_Server_Info *server, struct page **pages, |
| unsigned int npages, unsigned int len) |
| { |
| int i; |
| int length; |
| |
| for (i = 0; i < npages; i++) { |
| struct page *page = pages[i]; |
| size_t n; |
| |
| n = len; |
| if (len >= PAGE_SIZE) { |
| /* enough data to fill the page */ |
| n = PAGE_SIZE; |
| len -= n; |
| } else { |
| zero_user(page, len, PAGE_SIZE - len); |
| len = 0; |
| } |
| length = cifs_read_page_from_socket(server, page, n); |
| if (length < 0) |
| return length; |
| server->total_read += length; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size, |
| unsigned int cur_off, struct bio_vec **page_vec) |
| { |
| struct bio_vec *bvec; |
| int i; |
| |
| bvec = kcalloc(npages, sizeof(struct bio_vec), GFP_KERNEL); |
| if (!bvec) |
| return -ENOMEM; |
| |
| for (i = 0; i < npages; i++) { |
| bvec[i].bv_page = pages[i]; |
| bvec[i].bv_offset = (i == 0) ? cur_off : 0; |
| bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size); |
| data_size -= bvec[i].bv_len; |
| } |
| |
| if (data_size != 0) { |
| cifs_dbg(VFS, "%s: something went wrong\n", __func__); |
| kfree(bvec); |
| return -EIO; |
| } |
| |
| *page_vec = bvec; |
| return 0; |
| } |
| |
| static int |
| handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid, |
| char *buf, unsigned int buf_len, struct page **pages, |
| unsigned int npages, unsigned int page_data_size) |
| { |
| unsigned int data_offset; |
| unsigned int data_len; |
| unsigned int cur_off; |
| unsigned int cur_page_idx; |
| unsigned int pad_len; |
| struct cifs_readdata *rdata = mid->callback_data; |
| struct smb2_sync_hdr *shdr = get_sync_hdr(buf); |
| struct bio_vec *bvec = NULL; |
| struct iov_iter iter; |
| struct kvec iov; |
| int length; |
| |
| if (shdr->Command != SMB2_READ) { |
| cifs_dbg(VFS, "only big read responses are supported\n"); |
| return -ENOTSUPP; |
| } |
| |
| if (server->ops->is_status_pending && |
| server->ops->is_status_pending(buf, server, 0)) |
| return -1; |
| |
| rdata->result = server->ops->map_error(buf, false); |
| if (rdata->result != 0) { |
| cifs_dbg(FYI, "%s: server returned error %d\n", |
| __func__, rdata->result); |
| dequeue_mid(mid, rdata->result); |
| return 0; |
| } |
| |
| data_offset = server->ops->read_data_offset(buf) + 4; |
| data_len = server->ops->read_data_length(buf); |
| |
| if (data_offset < server->vals->read_rsp_size) { |
| /* |
| * win2k8 sometimes sends an offset of 0 when the read |
| * is beyond the EOF. Treat it as if the data starts just after |
| * the header. |
| */ |
| cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n", |
| __func__, data_offset); |
| data_offset = server->vals->read_rsp_size; |
| } else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) { |
| /* data_offset is beyond the end of smallbuf */ |
| cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n", |
| __func__, data_offset); |
| rdata->result = -EIO; |
| dequeue_mid(mid, rdata->result); |
| return 0; |
| } |
| |
| pad_len = data_offset - server->vals->read_rsp_size; |
| |
| if (buf_len <= data_offset) { |
| /* read response payload is in pages */ |
| cur_page_idx = pad_len / PAGE_SIZE; |
| cur_off = pad_len % PAGE_SIZE; |
| |
| if (cur_page_idx != 0) { |
| /* data offset is beyond the 1st page of response */ |
| cifs_dbg(FYI, "%s: data offset (%u) beyond 1st page of response\n", |
| __func__, data_offset); |
| rdata->result = -EIO; |
| dequeue_mid(mid, rdata->result); |
| return 0; |
| } |
| |
| if (data_len > page_data_size - pad_len) { |
| /* data_len is corrupt -- discard frame */ |
| rdata->result = -EIO; |
| dequeue_mid(mid, rdata->result); |
| return 0; |
| } |
| |
| rdata->result = init_read_bvec(pages, npages, page_data_size, |
| cur_off, &bvec); |
| if (rdata->result != 0) { |
| dequeue_mid(mid, rdata->result); |
| return 0; |
| } |
| |
| iov_iter_bvec(&iter, WRITE | ITER_BVEC, bvec, npages, data_len); |
| } else if (buf_len >= data_offset + data_len) { |
| /* read response payload is in buf */ |
| WARN_ONCE(npages > 0, "read data can be either in buf or in pages"); |
| iov.iov_base = buf + data_offset; |
| iov.iov_len = data_len; |
| iov_iter_kvec(&iter, WRITE | ITER_KVEC, &iov, 1, data_len); |
| } else { |
| /* read response payload cannot be in both buf and pages */ |
| WARN_ONCE(1, "buf can not contain only a part of read data"); |
| rdata->result = -EIO; |
| dequeue_mid(mid, rdata->result); |
| return 0; |
| } |
| |
| /* set up first iov for signature check */ |
| rdata->iov[0].iov_base = buf; |
| rdata->iov[0].iov_len = 4; |
| rdata->iov[1].iov_base = buf + 4; |
| rdata->iov[1].iov_len = server->vals->read_rsp_size - 4; |
| cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n", |
| rdata->iov[0].iov_base, server->vals->read_rsp_size); |
| |
| length = rdata->copy_into_pages(server, rdata, &iter); |
| |
| kfree(bvec); |
| |
| if (length < 0) |
| return length; |
| |
| dequeue_mid(mid, false); |
| return length; |
| } |
| |
| static int |
| receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid) |
| { |
| char *buf = server->smallbuf; |
| struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; |
| unsigned int npages; |
| struct page **pages; |
| unsigned int len; |
| unsigned int buflen = get_rfc1002_length(buf) + 4; |
| int rc; |
| int i = 0; |
| |
| len = min_t(unsigned int, buflen, server->vals->read_rsp_size - 4 + |
| sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1; |
| |
| rc = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, len); |
| if (rc < 0) |
| return rc; |
| server->total_read += rc; |
| |
| len = le32_to_cpu(tr_hdr->OriginalMessageSize) + 4 - |
| server->vals->read_rsp_size; |
| npages = DIV_ROUND_UP(len, PAGE_SIZE); |
| |
| pages = kmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); |
| if (!pages) { |
| rc = -ENOMEM; |
| goto discard_data; |
| } |
| |
| for (; i < npages; i++) { |
| pages[i] = alloc_page(GFP_KERNEL|__GFP_HIGHMEM); |
| if (!pages[i]) { |
| rc = -ENOMEM; |
| goto discard_data; |
| } |
| } |
| |
| /* read read data into pages */ |
| rc = read_data_into_pages(server, pages, npages, len); |
| if (rc) |
| goto free_pages; |
| |
| rc = cifs_discard_remaining_data(server, buf); |
| if (rc) |
| goto free_pages; |
| |
| rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size - 4, |
| pages, npages, len); |
| if (rc) |
| goto free_pages; |
| |
| *mid = smb2_find_mid(server, buf); |
| if (*mid == NULL) |
| cifs_dbg(FYI, "mid not found\n"); |
| else { |
| cifs_dbg(FYI, "mid found\n"); |
| (*mid)->decrypted = true; |
| rc = handle_read_data(server, *mid, buf, |
| server->vals->read_rsp_size, |
| pages, npages, len); |
| } |
| |
| free_pages: |
| for (i = i - 1; i >= 0; i--) |
| put_page(pages[i]); |
| kfree(pages); |
| return rc; |
| discard_data: |
| cifs_discard_remaining_data(server, buf); |
| goto free_pages; |
| } |
| |
| static int |
| receive_encrypted_standard(struct TCP_Server_Info *server, |
| struct mid_q_entry **mid) |
| { |
| int length; |
| char *buf = server->smallbuf; |
| unsigned int pdu_length = get_rfc1002_length(buf); |
| unsigned int buf_size; |
| struct mid_q_entry *mid_entry; |
| |
| /* switch to large buffer if too big for a small one */ |
| if (pdu_length + 4 > MAX_CIFS_SMALL_BUFFER_SIZE) { |
| server->large_buf = true; |
| memcpy(server->bigbuf, buf, server->total_read); |
| buf = server->bigbuf; |
| } |
| |
| /* now read the rest */ |
| length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, |
| pdu_length - HEADER_SIZE(server) + 1 + 4); |
| if (length < 0) |
| return length; |
| server->total_read += length; |
| |
| buf_size = pdu_length + 4 - sizeof(struct smb2_transform_hdr); |
| length = decrypt_raw_data(server, buf, buf_size, NULL, 0, 0); |
| if (length) |
| return length; |
| |
| mid_entry = smb2_find_mid(server, buf); |
| if (mid_entry == NULL) |
| cifs_dbg(FYI, "mid not found\n"); |
| else { |
| cifs_dbg(FYI, "mid found\n"); |
| mid_entry->decrypted = true; |
| } |
| |
| *mid = mid_entry; |
| |
| if (mid_entry && mid_entry->handle) |
| return mid_entry->handle(server, mid_entry); |
| |
| return cifs_handle_standard(server, mid_entry); |
| } |
| |
| static int |
| smb3_receive_transform(struct TCP_Server_Info *server, struct mid_q_entry **mid) |
| { |
| char *buf = server->smallbuf; |
| unsigned int pdu_length = get_rfc1002_length(buf); |
| struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf; |
| unsigned int orig_len = le32_to_cpu(tr_hdr->OriginalMessageSize); |
| |
| if (pdu_length + 4 < sizeof(struct smb2_transform_hdr) + |
| sizeof(struct smb2_sync_hdr)) { |
| cifs_dbg(VFS, "Transform message is too small (%u)\n", |
| pdu_length); |
| cifs_reconnect(server); |
| wake_up(&server->response_q); |
| return -ECONNABORTED; |
| } |
| |
| if (pdu_length + 4 < orig_len + sizeof(struct smb2_transform_hdr)) { |
| cifs_dbg(VFS, "Transform message is broken\n"); |
| cifs_reconnect(server); |
| wake_up(&server->response_q); |
| return -ECONNABORTED; |
| } |
| |
| if (pdu_length + 4 > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) |
| return receive_encrypted_read(server, mid); |
| |
| return receive_encrypted_standard(server, mid); |
| } |
| |
| int |
| smb3_handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid) |
| { |
| char *buf = server->large_buf ? server->bigbuf : server->smallbuf; |
| |
| return handle_read_data(server, mid, buf, get_rfc1002_length(buf) + 4, |
| NULL, 0, 0); |
| } |
| |
| struct smb_version_operations smb20_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, |
| .wait_mtu_credits = cifs_wait_mtu_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, |
| .handle_cancelled_mid = smb2_handle_cancelled_mid, |
| .downgrade_oplock = smb2_downgrade_oplock, |
| .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, |
| .qfs_tcon = smb2_qfs_tcon, |
| .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, |
| .set_compression = smb2_set_compression, |
| .mkdir = smb2_mkdir, |
| .mkdir_setinfo = smb2_mkdir_setinfo, |
| .rmdir = smb2_rmdir, |
| .unlink = smb2_unlink, |
| .rename = smb2_rename_path, |
| .create_hardlink = smb2_create_hardlink, |
| .query_symlink = smb2_query_symlink, |
| .query_mf_symlink = smb3_query_mf_symlink, |
| .create_mf_symlink = smb3_create_mf_symlink, |
| .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, |
| .is_read_op = smb2_is_read_op, |
| .set_oplock_level = smb2_set_oplock_level, |
| .create_lease_buf = smb2_create_lease_buf, |
| .parse_lease_buf = smb2_parse_lease_buf, |
| .copychunk_range = smb2_copychunk_range, |
| .wp_retry_size = smb2_wp_retry_size, |
| .dir_needs_close = smb2_dir_needs_close, |
| .get_dfs_refer = smb2_get_dfs_refer, |
| .select_sectype = smb2_select_sectype, |
| }; |
| |
| 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, |
| .wait_mtu_credits = smb2_wait_mtu_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, |
| .handle_cancelled_mid = smb2_handle_cancelled_mid, |
| .downgrade_oplock = smb2_downgrade_oplock, |
| .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, |
| .qfs_tcon = smb2_qfs_tcon, |
| .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, |
| .set_compression = smb2_set_compression, |
| .mkdir = smb2_mkdir, |
| .mkdir_setinfo = smb2_mkdir_setinfo, |
| .rmdir = smb2_rmdir, |
| .unlink = smb2_unlink, |
| .rename = smb2_rename_path, |
| .create_hardlink = smb2_create_hardlink, |
| .query_symlink = smb2_query_symlink, |
| .query_mf_symlink = smb3_query_mf_symlink, |
| .create_mf_symlink = smb3_create_mf_symlink, |
| .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, |
| .is_read_op = smb21_is_read_op, |
| .set_oplock_level = smb21_set_oplock_level, |
| .create_lease_buf = smb2_create_lease_buf, |
| .parse_lease_buf = smb2_parse_lease_buf, |
| .copychunk_range = smb2_copychunk_range, |
| .wp_retry_size = smb2_wp_retry_size, |
| .dir_needs_close = smb2_dir_needs_close, |
| .enum_snapshots = smb3_enum_snapshots, |
| .get_dfs_refer = smb2_get_dfs_refer, |
| .select_sectype = smb2_select_sectype, |
| }; |
| |
| 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, |
| .wait_mtu_credits = smb2_wait_mtu_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, |
| .dump_share_caps = smb2_dump_share_caps, |
| .is_oplock_break = smb2_is_valid_oplock_break, |
| .handle_cancelled_mid = smb2_handle_cancelled_mid, |
| .downgrade_oplock = smb2_downgrade_oplock, |
| .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, |
| .qfs_tcon = smb3_qfs_tcon, |
| .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, |
| .set_compression = smb2_set_compression, |
| .mkdir = smb2_mkdir, |
| .mkdir_setinfo = smb2_mkdir_setinfo, |
| .rmdir = smb2_rmdir, |
| .unlink = smb2_unlink, |
| .rename = smb2_rename_path, |
| .create_hardlink = smb2_create_hardlink, |
| .query_symlink = smb2_query_symlink, |
| .query_mf_symlink = smb3_query_mf_symlink, |
| .create_mf_symlink = smb3_create_mf_symlink, |
| .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, |
| .generate_signingkey = generate_smb30signingkey, |
| .calc_signature = smb3_calc_signature, |
| .set_integrity = smb3_set_integrity, |
| .is_read_op = smb21_is_read_op, |
| .set_oplock_level = smb3_set_oplock_level, |
| .create_lease_buf = smb3_create_lease_buf, |
| .parse_lease_buf = smb3_parse_lease_buf, |
| .copychunk_range = smb2_copychunk_range, |
| .duplicate_extents = smb2_duplicate_extents, |
| .validate_negotiate = smb3_validate_negotiate, |
| .wp_retry_size = smb2_wp_retry_size, |
| .dir_needs_close = smb2_dir_needs_close, |
| .fallocate = smb3_fallocate, |
| .enum_snapshots = smb3_enum_snapshots, |
| .init_transform_rq = smb3_init_transform_rq, |
| .free_transform_rq = smb3_free_transform_rq, |
| .is_transform_hdr = smb3_is_transform_hdr, |
| .receive_transform = smb3_receive_transform, |
| .get_dfs_refer = smb2_get_dfs_refer, |
| .select_sectype = smb2_select_sectype, |
| }; |
| |
| #ifdef CONFIG_CIFS_SMB311 |
| struct smb_version_operations smb311_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, |
| .wait_mtu_credits = smb2_wait_mtu_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, |
| .dump_share_caps = smb2_dump_share_caps, |
| .is_oplock_break = smb2_is_valid_oplock_break, |
| .handle_cancelled_mid = smb2_handle_cancelled_mid, |
| .downgrade_oplock = smb2_downgrade_oplock, |
| .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, |
| .qfs_tcon = smb3_qfs_tcon, |
| .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, |
| .set_compression = smb2_set_compression, |
| .mkdir = smb2_mkdir, |
| .mkdir_setinfo = smb2_mkdir_setinfo, |
| .rmdir = smb2_rmdir, |
| .unlink = smb2_unlink, |
| .rename = smb2_rename_path, |
| .create_hardlink = smb2_create_hardlink, |
| .query_symlink = smb2_query_symlink, |
| .query_mf_symlink = smb3_query_mf_symlink, |
| .create_mf_symlink = smb3_create_mf_symlink, |
| .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, |
| .generate_signingkey = generate_smb311signingkey, |
| .calc_signature = smb3_calc_signature, |
| .set_integrity = smb3_set_integrity, |
| .is_read_op = smb21_is_read_op, |
| .set_oplock_level = smb3_set_oplock_level, |
| .create_lease_buf = smb3_create_lease_buf, |
| .parse_lease_buf = smb3_parse_lease_buf, |
| .copychunk_range = smb2_copychunk_range, |
| .duplicate_extents = smb2_duplicate_extents, |
| /* .validate_negotiate = smb3_validate_negotiate, */ /* not used in 3.11 */ |
| .wp_retry_size = smb2_wp_retry_size, |
| .dir_needs_close = smb2_dir_needs_close, |
| .fallocate = smb3_fallocate, |
| .enum_snapshots = smb3_enum_snapshots, |
| .init_transform_rq = smb3_init_transform_rq, |
| .free_transform_rq = smb3_free_transform_rq, |
| .is_transform_hdr = smb3_is_transform_hdr, |
| .receive_transform = smb3_receive_transform, |
| .get_dfs_refer = smb2_get_dfs_refer, |
| .select_sectype = smb2_select_sectype, |
| }; |
| #endif /* CIFS_SMB311 */ |
| |
| 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, |
| .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
| .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, |
| .create_lease_size = sizeof(struct create_lease), |
| }; |
| |
| 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, |
| .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
| .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, |
| .create_lease_size = sizeof(struct create_lease), |
| }; |
| |
| 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 | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION, |
| .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, |
| .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
| .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, |
| .create_lease_size = sizeof(struct create_lease_v2), |
| }; |
| |
| struct smb_version_values smb302_values = { |
| .version_string = SMB302_VERSION_STRING, |
| .protocol_id = SMB302_PROT_ID, |
| .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES | SMB2_GLOBAL_CAP_ENCRYPTION, |
| .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, |
| .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
| .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, |
| .create_lease_size = sizeof(struct create_lease_v2), |
| }; |
| |
| #ifdef CONFIG_CIFS_SMB311 |
| struct smb_version_values smb311_values = { |
| .version_string = SMB311_VERSION_STRING, |
| .protocol_id = SMB311_PROT_ID, |
| .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU | SMB2_GLOBAL_CAP_PERSISTENT_HANDLES, |
| .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, |
| .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, |
| .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, |
| .create_lease_size = sizeof(struct create_lease_v2), |
| }; |
| #endif /* SMB311 */ |