fs/cifs/cifs_debug.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  *   Copyright (C) International Business Machines  Corp., 2000,2005
   5  *
   6  *   Modified by Steve French (sfrench@us.ibm.com)
   7  */
   8 #include <linux/fs.h>
   9 #include <linux/string.h>
  10 #include <linux/ctype.h>
  11 #include <linux/kstrtox.h>
  12 #include <linux/module.h>
  13 #include <linux/proc_fs.h>
  14 #include <linux/uaccess.h>
  15 #include "cifspdu.h"
  16 #include "cifsglob.h"
  17 #include "cifsproto.h"
  18 #include "cifs_debug.h"
  19 #include "cifsfs.h"
  20 #include "fs_context.h"
  21 #ifdef CONFIG_CIFS_DFS_UPCALL
  22 #include "dfs_cache.h"
  23 #endif
  24 #ifdef CONFIG_CIFS_SMB_DIRECT
  25 #include "smbdirect.h"
  26 #endif
  27 #include "cifs_swn.h"
  28
  29 void
  30 cifs_dump_mem(char *label, void *data, int length)
  31 {
  32         pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
  33         print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
  34                        data, length, true);
  35 }
  36
  37 void cifs_dump_detail(void *buf, struct TCP_Server_Info *server)
  38 {
  39 #ifdef CONFIG_CIFS_DEBUG2
  40         struct smb_hdr *smb = buf;
  41
  42         cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
  43                  smb->Command, smb->Status.CifsError,
  44                  smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
  45         cifs_dbg(VFS, "smb buf %p len %u\n", smb,
  46                  server->ops->calc_smb_size(smb));
  47 #endif /* CONFIG_CIFS_DEBUG2 */
  48 }
  49
  50 void cifs_dump_mids(struct TCP_Server_Info *server)
  51 {
  52 #ifdef CONFIG_CIFS_DEBUG2
  53         struct mid_q_entry *mid_entry;
  54
  55         if (server == NULL)
  56                 return;
  57
  58         cifs_dbg(VFS, "Dump pending requests:\n");
  59         spin_lock(&server->mid_lock);
  60         list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
  61                 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
  62                          mid_entry->mid_state,
  63                          le16_to_cpu(mid_entry->command),
  64                          mid_entry->pid,
  65                          mid_entry->callback_data,
  66                          mid_entry->mid);
  67 #ifdef CONFIG_CIFS_STATS2
  68                 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
  69                          mid_entry->large_buf,
  70                          mid_entry->resp_buf,
  71                          mid_entry->when_received,
  72                          jiffies);
  73 #endif /* STATS2 */
  74                 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
  75                          mid_entry->multiRsp, mid_entry->multiEnd);
  76                 if (mid_entry->resp_buf) {
  77                         cifs_dump_detail(mid_entry->resp_buf, server);
  78                         cifs_dump_mem("existing buf: ",
  79                                 mid_entry->resp_buf, 62);
  80                 }
  81         }
  82         spin_unlock(&server->mid_lock);
  83 #endif /* CONFIG_CIFS_DEBUG2 */
  84 }
  85
  86 #ifdef CONFIG_PROC_FS
  87 static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
  88 {
  89         __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
  90
  91         seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count);
  92         if (tcon->nativeFileSystem)
  93                 seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
  94         seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
  95                    le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
  96                    le32_to_cpu(tcon->fsAttrInfo.Attributes),
  97                    le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
  98                    tcon->status);
  99         if (dev_type == FILE_DEVICE_DISK)
 100                 seq_puts(m, " type: DISK ");
 101         else if (dev_type == FILE_DEVICE_CD_ROM)
 102                 seq_puts(m, " type: CDROM ");
 103         else
 104                 seq_printf(m, " type: %d ", dev_type);
 105
 106         seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number);
 107
 108         if ((tcon->seal) ||
 109             (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
 110             (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
 111                 seq_printf(m, " Encrypted");
 112         if (tcon->nocase)
 113                 seq_printf(m, " nocase");
 114         if (tcon->unix_ext)
 115                 seq_printf(m, " POSIX Extensions");
 116         if (tcon->ses->server->ops->dump_share_caps)
 117                 tcon->ses->server->ops->dump_share_caps(m, tcon);
 118         if (tcon->use_witness)
 119                 seq_puts(m, " Witness");
 120         if (tcon->broken_sparse_sup)
 121                 seq_puts(m, " nosparse");
 122         if (tcon->need_reconnect)
 123                 seq_puts(m, "\tDISCONNECTED ");
 124         seq_putc(m, '\n');
 125 }
 126
 127 static void
 128 cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
 129 {
 130         struct TCP_Server_Info *server = chan->server;
 131
 132         seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx"
 133                    "\n\t\tNumber of credits: %d Dialect 0x%x"
 134                    "\n\t\tTCP status: %d Instance: %d"
 135                    "\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d"
 136                    "\n\t\tIn Send: %d In MaxReq Wait: %d",
 137                    i+1, server->conn_id,
 138                    server->credits,
 139                    server->dialect,
 140                    server->tcpStatus,
 141                    server->reconnect_instance,
 142                    server->srv_count,
 143                    server->sec_mode,
 144                    in_flight(server),
 145                    atomic_read(&server->in_send),
 146                    atomic_read(&server->num_waiters));
 147 }
 148
 149 static void
 150 cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
 151 {
 152         struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
 153         struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
 154
 155         seq_printf(m, "\tSpeed: %zu bps\n", iface->speed);
 156         seq_puts(m, "\t\tCapabilities: ");
 157         if (iface->rdma_capable)
 158                 seq_puts(m, "rdma ");
 159         if (iface->rss_capable)
 160                 seq_puts(m, "rss ");
 161         seq_putc(m, '\n');
 162         if (iface->sockaddr.ss_family == AF_INET)
 163                 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
 164         else if (iface->sockaddr.ss_family == AF_INET6)
 165                 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
 166         if (!iface->is_active)
 167                 seq_puts(m, "\t\t[for-cleanup]\n");
 168 }
 169
 170 static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
 171 {
 172         struct TCP_Server_Info *server;
 173         struct cifs_ses *ses;
 174         struct cifs_tcon *tcon;
 175         struct cifsFileInfo *cfile;
 176
 177         seq_puts(m, "# Version:1\n");
 178         seq_puts(m, "# Format:\n");
 179         seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>");
 180 #ifdef CONFIG_CIFS_DEBUG2
 181         seq_printf(m, " <filename> <mid>\n");
 182 #else
 183         seq_printf(m, " <filename>\n");
 184 #endif /* CIFS_DEBUG2 */
 185         spin_lock(&cifs_tcp_ses_lock);
 186         list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
 187                 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
 188                         list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
 189                                 spin_lock(&tcon->open_file_lock);
 190                                 list_for_each_entry(cfile, &tcon->openFileList, tlist) {
 191                                         seq_printf(m,
 192                                                 "0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd",
 193                                                 tcon->tid,
 194                                                 ses->Suid,
 195                                                 cfile->fid.persistent_fid,
 196                                                 cfile->f_flags,
 197                                                 cfile->count,
 198                                                 cfile->pid,
 199                                                 from_kuid(&init_user_ns, cfile->uid),
 200                                                 cfile->dentry);
 201 #ifdef CONFIG_CIFS_DEBUG2
 202                                         seq_printf(m, " %llu\n", cfile->fid.mid);
 203 #else
 204                                         seq_printf(m, "\n");
 205 #endif /* CIFS_DEBUG2 */
 206                                 }
 207                                 spin_unlock(&tcon->open_file_lock);
 208                         }
 209                 }
 210         }
 211         spin_unlock(&cifs_tcp_ses_lock);
 212         seq_putc(m, '\n');
 213         return 0;
 214 }
 215
 216 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
 217 {
 218         struct mid_q_entry *mid_entry;
 219         struct TCP_Server_Info *server;
 220         struct TCP_Server_Info *chan_server;
 221         struct cifs_ses *ses;
 222         struct cifs_tcon *tcon;
 223         struct cifs_server_iface *iface;
 224         int c, i, j;
 225
 226         seq_puts(m,
 227                     "Display Internal CIFS Data Structures for Debugging\n"
 228                     "---------------------------------------------------\n");
 229         seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
 230         seq_printf(m, "Features:");
 231 #ifdef CONFIG_CIFS_DFS_UPCALL
 232         seq_printf(m, " DFS");
 233 #endif
 234 #ifdef CONFIG_CIFS_FSCACHE
 235         seq_printf(m, ",FSCACHE");
 236 #endif
 237 #ifdef CONFIG_CIFS_SMB_DIRECT
 238         seq_printf(m, ",SMB_DIRECT");
 239 #endif
 240 #ifdef CONFIG_CIFS_STATS2
 241         seq_printf(m, ",STATS2");
 242 #else
 243         seq_printf(m, ",STATS");
 244 #endif
 245 #ifdef CONFIG_CIFS_DEBUG2
 246         seq_printf(m, ",DEBUG2");
 247 #elif defined(CONFIG_CIFS_DEBUG)
 248         seq_printf(m, ",DEBUG");
 249 #endif
 250 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
 251         seq_printf(m, ",ALLOW_INSECURE_LEGACY");
 252 #endif
 253 #ifdef CONFIG_CIFS_POSIX
 254         seq_printf(m, ",CIFS_POSIX");
 255 #endif
 256 #ifdef CONFIG_CIFS_UPCALL
 257         seq_printf(m, ",UPCALL(SPNEGO)");
 258 #endif
 259 #ifdef CONFIG_CIFS_XATTR
 260         seq_printf(m, ",XATTR");
 261 #endif
 262         seq_printf(m, ",ACL");
 263 #ifdef CONFIG_CIFS_SWN_UPCALL
 264         seq_puts(m, ",WITNESS");
 265 #endif
 266         seq_putc(m, '\n');
 267         seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
 268         seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
 269
 270         seq_printf(m, "\nServers: ");
 271
 272         c = 0;
 273         spin_lock(&cifs_tcp_ses_lock);
 274         list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
 275                 /* channel info will be printed as a part of sessions below */
 276                 if (CIFS_SERVER_IS_CHAN(server))
 277                         continue;
 278
 279                 c++;
 280                 seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
 281                         c, server->conn_id);
 282
 283                 spin_lock(&server->srv_lock);
 284                 if (server->hostname)
 285                         seq_printf(m, "Hostname: %s ", server->hostname);
 286                 spin_unlock(&server->srv_lock);
 287 #ifdef CONFIG_CIFS_SMB_DIRECT
 288                 if (!server->rdma)
 289                         goto skip_rdma;
 290
 291                 if (!server->smbd_conn) {
 292                         seq_printf(m, "\nSMBDirect transport not available");
 293                         goto skip_rdma;
 294                 }
 295
 296                 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
 297                         "transport status: %x",
 298                         server->smbd_conn->protocol,
 299                         server->smbd_conn->transport_status);
 300                 seq_printf(m, "\nConn receive_credit_max: %x "
 301                         "send_credit_target: %x max_send_size: %x",
 302                         server->smbd_conn->receive_credit_max,
 303                         server->smbd_conn->send_credit_target,
 304                         server->smbd_conn->max_send_size);
 305                 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
 306                         "max_fragmented_send_size: %x max_receive_size:%x",
 307                         server->smbd_conn->max_fragmented_recv_size,
 308                         server->smbd_conn->max_fragmented_send_size,
 309                         server->smbd_conn->max_receive_size);
 310                 seq_printf(m, "\nConn keep_alive_interval: %x "
 311                         "max_readwrite_size: %x rdma_readwrite_threshold: %x",
 312                         server->smbd_conn->keep_alive_interval,
 313                         server->smbd_conn->max_readwrite_size,
 314                         server->smbd_conn->rdma_readwrite_threshold);
 315                 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
 316                         "count_put_receive_buffer: %x count_send_empty: %x",
 317                         server->smbd_conn->count_get_receive_buffer,
 318                         server->smbd_conn->count_put_receive_buffer,
 319                         server->smbd_conn->count_send_empty);
 320                 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
 321                         "count_enqueue_reassembly_queue: %x "
 322                         "count_dequeue_reassembly_queue: %x "
 323                         "fragment_reassembly_remaining: %x "
 324                         "reassembly_data_length: %x "
 325                         "reassembly_queue_length: %x",
 326                         server->smbd_conn->count_reassembly_queue,
 327                         server->smbd_conn->count_enqueue_reassembly_queue,
 328                         server->smbd_conn->count_dequeue_reassembly_queue,
 329                         server->smbd_conn->fragment_reassembly_remaining,
 330                         server->smbd_conn->reassembly_data_length,
 331                         server->smbd_conn->reassembly_queue_length);
 332                 seq_printf(m, "\nCurrent Credits send_credits: %x "
 333                         "receive_credits: %x receive_credit_target: %x",
 334                         atomic_read(&server->smbd_conn->send_credits),
 335                         atomic_read(&server->smbd_conn->receive_credits),
 336                         server->smbd_conn->receive_credit_target);
 337                 seq_printf(m, "\nPending send_pending: %x ",
 338                         atomic_read(&server->smbd_conn->send_pending));
 339                 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
 340                         "count_empty_packet_queue: %x",
 341                         server->smbd_conn->count_receive_queue,
 342                         server->smbd_conn->count_empty_packet_queue);
 343                 seq_printf(m, "\nMR responder_resources: %x "
 344                         "max_frmr_depth: %x mr_type: %x",
 345                         server->smbd_conn->responder_resources,
 346                         server->smbd_conn->max_frmr_depth,
 347                         server->smbd_conn->mr_type);
 348                 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
 349                         atomic_read(&server->smbd_conn->mr_ready_count),
 350                         atomic_read(&server->smbd_conn->mr_used_count));
 351 skip_rdma:
 352 #endif
 353                 seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
 354                         server->credits,  server->dialect);
 355                 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
 356                         seq_printf(m, " COMPRESS_LZNT1");
 357                 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
 358                         seq_printf(m, " COMPRESS_LZ77");
 359                 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
 360                         seq_printf(m, " COMPRESS_LZ77_HUFF");
 361                 if (server->sign)
 362                         seq_printf(m, " signed");
 363                 if (server->posix_ext_supported)
 364                         seq_printf(m, " posix");
 365                 if (server->nosharesock)
 366                         seq_printf(m, " nosharesock");
 367
 368                 if (server->rdma)
 369                         seq_printf(m, "\nRDMA ");
 370                 seq_printf(m, "\nTCP status: %d Instance: %d"
 371                                 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
 372                                 server->tcpStatus,
 373                                 server->reconnect_instance,
 374                                 server->srv_count,
 375                                 server->sec_mode, in_flight(server));
 376
 377                 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
 378                                 atomic_read(&server->in_send),
 379                                 atomic_read(&server->num_waiters));
 380                 if (IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)) {
 381                         if (server->origin_fullpath)
 382                                 seq_printf(m, "\nDFS origin full path: %s",
 383                                            server->origin_fullpath);
 384                         if (server->leaf_fullpath)
 385                                 seq_printf(m, "\nDFS leaf full path:   %s",
 386                                            server->leaf_fullpath);
 387                 }
 388
 389                 seq_printf(m, "\n\n\tSessions: ");
 390                 i = 0;
 391                 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
 392                         i++;
 393                         if ((ses->serverDomain == NULL) ||
 394                                 (ses->serverOS == NULL) ||
 395                                 (ses->serverNOS == NULL)) {
 396                                 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
 397                                         i, ses->ip_addr, ses->ses_count,
 398                                         ses->capabilities, ses->ses_status);
 399                                 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
 400                                         seq_printf(m, "Guest ");
 401                                 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
 402                                         seq_printf(m, "Anonymous ");
 403                         } else {
 404                                 seq_printf(m,
 405                                     "\n\t%d) Name: %s  Domain: %s Uses: %d OS: %s "
 406                                     "\n\tNOS: %s\tCapability: 0x%x"
 407                                         "\n\tSMB session status: %d ",
 408                                 i, ses->ip_addr, ses->serverDomain,
 409                                 ses->ses_count, ses->serverOS, ses->serverNOS,
 410                                 ses->capabilities, ses->ses_status);
 411                         }
 412
 413                         seq_printf(m, "\n\tSecurity type: %s ",
 414                                 get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
 415
 416                         /* dump session id helpful for use with network trace */
 417                         seq_printf(m, " SessionId: 0x%llx", ses->Suid);
 418                         if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
 419                                 seq_puts(m, " encrypted");
 420                         if (ses->sign)
 421                                 seq_puts(m, " signed");
 422
 423                         seq_printf(m, "\n\tUser: %d Cred User: %d",
 424                                    from_kuid(&init_user_ns, ses->linux_uid),
 425                                    from_kuid(&init_user_ns, ses->cred_uid));
 426
 427                         if (ses->dfs_root_ses) {
 428                                 seq_printf(m, "\n\tDFS root session id: 0x%llx",
 429                                            ses->dfs_root_ses->Suid);
 430                         }
 431
 432                         spin_lock(&ses->chan_lock);
 433                         if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0))
 434                                 seq_puts(m, "\tPrimary channel: DISCONNECTED ");
 435                         if (CIFS_CHAN_IN_RECONNECT(ses, 0))
 436                                 seq_puts(m, "\t[RECONNECTING] ");
 437
 438                         if (ses->chan_count > 1) {
 439                                 seq_printf(m, "\n\n\tExtra Channels: %zu ",
 440                                            ses->chan_count-1);
 441                                 for (j = 1; j < ses->chan_count; j++) {
 442                                         cifs_dump_channel(m, j, &ses->chans[j]);
 443                                         if (CIFS_CHAN_NEEDS_RECONNECT(ses, j))
 444                                                 seq_puts(m, "\tDISCONNECTED ");
 445                                         if (CIFS_CHAN_IN_RECONNECT(ses, j))
 446                                                 seq_puts(m, "\t[RECONNECTING] ");
 447                                 }
 448                         }
 449                         spin_unlock(&ses->chan_lock);
 450
 451                         seq_puts(m, "\n\n\tShares: ");
 452                         j = 0;
 453
 454                         seq_printf(m, "\n\t%d) IPC: ", j);
 455                         if (ses->tcon_ipc)
 456                                 cifs_debug_tcon(m, ses->tcon_ipc);
 457                         else
 458                                 seq_puts(m, "none\n");
 459
 460                         list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
 461                                 ++j;
 462                                 seq_printf(m, "\n\t%d) ", j);
 463                                 cifs_debug_tcon(m, tcon);
 464                         }
 465
 466                         spin_lock(&ses->iface_lock);
 467                         if (ses->iface_count)
 468                                 seq_printf(m, "\n\n\tServer interfaces: %zu"
 469                                            "\tLast updated: %lu seconds ago",
 470                                            ses->iface_count,
 471                                            (jiffies - ses->iface_last_update) / HZ);
 472                         j = 0;
 473                         list_for_each_entry(iface, &ses->iface_list,
 474                                                  iface_head) {
 475                                 seq_printf(m, "\n\t%d)", ++j);
 476                                 cifs_dump_iface(m, iface);
 477                                 if (is_ses_using_iface(ses, iface))
 478                                         seq_puts(m, "\t\t[CONNECTED]\n");
 479                         }
 480                         spin_unlock(&ses->iface_lock);
 481
 482                         seq_puts(m, "\n\n\tMIDs: ");
 483                         spin_lock(&ses->chan_lock);
 484                         for (j = 0; j < ses->chan_count; j++) {
 485                                 chan_server = ses->chans[j].server;
 486                                 if (!chan_server)
 487                                         continue;
 488
 489                                 if (list_empty(&chan_server->pending_mid_q))
 490                                         continue;
 491
 492                                 seq_printf(m, "\n\tServer ConnectionId: 0x%llx",
 493                                            chan_server->conn_id);
 494                                 spin_lock(&chan_server->mid_lock);
 495                                 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) {
 496                                         seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu",
 497                                                    mid_entry->mid_state,
 498                                                    le16_to_cpu(mid_entry->command),
 499                                                    mid_entry->pid,
 500                                                    mid_entry->callback_data,
 501                                                    mid_entry->mid);
 502                                 }
 503                                 spin_unlock(&chan_server->mid_lock);
 504                         }
 505                         spin_unlock(&ses->chan_lock);
 506                         seq_puts(m, "\n--\n");
 507                 }
 508                 if (i == 0)
 509                         seq_printf(m, "\n\t\t[NONE]");
 510         }
 511         if (c == 0)
 512                 seq_printf(m, "\n\t[NONE]");
 513
 514         spin_unlock(&cifs_tcp_ses_lock);
 515         seq_putc(m, '\n');
 516         cifs_swn_dump(m);
 517
 518         /* BB add code to dump additional info such as TCP session info now */
 519         return 0;
 520 }
 521
 522 static ssize_t cifs_stats_proc_write(struct file *file,
 523                 const char __user *buffer, size_t count, loff_t *ppos)
 524 {
 525         bool bv;
 526         int rc;
 527         struct TCP_Server_Info *server;
 528         struct cifs_ses *ses;
 529         struct cifs_tcon *tcon;
 530
 531         rc = kstrtobool_from_user(buffer, count, &bv);
 532         if (rc == 0) {
 533 #ifdef CONFIG_CIFS_STATS2
 534                 int i;
 535
 536                 atomic_set(&total_buf_alloc_count, 0);
 537                 atomic_set(&total_small_buf_alloc_count, 0);
 538 #endif /* CONFIG_CIFS_STATS2 */
 539                 atomic_set(&tcpSesReconnectCount, 0);
 540                 atomic_set(&tconInfoReconnectCount, 0);
 541
 542                 spin_lock(&GlobalMid_Lock);
 543                 GlobalMaxActiveXid = 0;
 544                 GlobalCurrentXid = 0;
 545                 spin_unlock(&GlobalMid_Lock);
 546                 spin_lock(&cifs_tcp_ses_lock);
 547                 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
 548                         server->max_in_flight = 0;
 549 #ifdef CONFIG_CIFS_STATS2
 550                         for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
 551                                 atomic_set(&server->num_cmds[i], 0);
 552                                 atomic_set(&server->smb2slowcmd[i], 0);
 553                                 server->time_per_cmd[i] = 0;
 554                                 server->slowest_cmd[i] = 0;
 555                                 server->fastest_cmd[0] = 0;
 556                         }
 557 #endif /* CONFIG_CIFS_STATS2 */
 558                         list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
 559                                 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
 560                                         atomic_set(&tcon->num_smbs_sent, 0);
 561                                         spin_lock(&tcon->stat_lock);
 562                                         tcon->bytes_read = 0;
 563                                         tcon->bytes_written = 0;
 564                                         spin_unlock(&tcon->stat_lock);
 565                                         if (server->ops->clear_stats)
 566                                                 server->ops->clear_stats(tcon);
 567                                 }
 568                         }
 569                 }
 570                 spin_unlock(&cifs_tcp_ses_lock);
 571         } else {
 572                 return rc;
 573         }
 574
 575         return count;
 576 }
 577
 578 static int cifs_stats_proc_show(struct seq_file *m, void *v)
 579 {
 580         int i;
 581 #ifdef CONFIG_CIFS_STATS2
 582         int j;
 583 #endif /* STATS2 */
 584         struct TCP_Server_Info *server;
 585         struct cifs_ses *ses;
 586         struct cifs_tcon *tcon;
 587
 588         seq_printf(m, "Resources in use\nCIFS Session: %d\n",
 589                         sesInfoAllocCount.counter);
 590         seq_printf(m, "Share (unique mount targets): %d\n",
 591                         tconInfoAllocCount.counter);
 592         seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
 593                         buf_alloc_count.counter,
 594                         cifs_min_rcv + tcpSesAllocCount.counter);
 595         seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 596                         small_buf_alloc_count.counter, cifs_min_small);
 597 #ifdef CONFIG_CIFS_STATS2
 598         seq_printf(m, "Total Large %d Small %d Allocations\n",
 599                                 atomic_read(&total_buf_alloc_count),
 600                                 atomic_read(&total_small_buf_alloc_count));
 601 #endif /* CONFIG_CIFS_STATS2 */
 602
 603         seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count));
 604         seq_printf(m,
 605                 "\n%d session %d share reconnects\n",
 606                 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
 607
 608         seq_printf(m,
 609                 "Total vfs operations: %d maximum at one time: %d\n",
 610                 GlobalCurrentXid, GlobalMaxActiveXid);
 611
 612         i = 0;
 613         spin_lock(&cifs_tcp_ses_lock);
 614         list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
 615                 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
 616 #ifdef CONFIG_CIFS_STATS2
 617                 seq_puts(m, "\nTotal time spent processing by command. Time ");
 618                 seq_printf(m, "units are jiffies (%d per second)\n", HZ);
 619                 seq_puts(m, "  SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
 620                 seq_puts(m, "  --------\t------\t----------\t-------\t-------\n");
 621                 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
 622                         seq_printf(m, "  %d\t\t%d\t%llu\t\t%u\t%u\n", j,
 623                                 atomic_read(&server->num_cmds[j]),
 624                                 server->time_per_cmd[j],
 625                                 server->fastest_cmd[j],
 626                                 server->slowest_cmd[j]);
 627                 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
 628                         if (atomic_read(&server->smb2slowcmd[j])) {
 629                                 spin_lock(&server->srv_lock);
 630                                 seq_printf(m, "  %d slow responses from %s for command %d\n",
 631                                         atomic_read(&server->smb2slowcmd[j]),
 632                                         server->hostname, j);
 633                                 spin_unlock(&server->srv_lock);
 634                         }
 635 #endif /* STATS2 */
 636                 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
 637                         list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
 638                                 i++;
 639                                 seq_printf(m, "\n%d) %s", i, tcon->tree_name);
 640                                 if (tcon->need_reconnect)
 641                                         seq_puts(m, "\tDISCONNECTED ");
 642                                 seq_printf(m, "\nSMBs: %d",
 643                                            atomic_read(&tcon->num_smbs_sent));
 644                                 if (server->ops->print_stats)
 645                                         server->ops->print_stats(m, tcon);
 646                         }
 647                 }
 648         }
 649         spin_unlock(&cifs_tcp_ses_lock);
 650
 651         seq_putc(m, '\n');
 652         return 0;
 653 }
 654
 655 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
 656 {
 657         return single_open(file, cifs_stats_proc_show, NULL);
 658 }
 659
 660 static const struct proc_ops cifs_stats_proc_ops = {
 661         .proc_open      = cifs_stats_proc_open,
 662         .proc_read      = seq_read,
 663         .proc_lseek     = seq_lseek,
 664         .proc_release   = single_release,
 665         .proc_write     = cifs_stats_proc_write,
 666 };
 667
 668 #ifdef CONFIG_CIFS_SMB_DIRECT
 669 #define PROC_FILE_DEFINE(name) \
 670 static ssize_t name##_write(struct file *file, const char __user *buffer, \
 671         size_t count, loff_t *ppos) \
 672 { \
 673         int rc; \
 674         rc = kstrtoint_from_user(buffer, count, 10, & name); \
 675         if (rc) \
 676                 return rc; \
 677         return count; \
 678 } \
 679 static int name##_proc_show(struct seq_file *m, void *v) \
 680 { \
 681         seq_printf(m, "%d\n", name ); \
 682         return 0; \
 683 } \
 684 static int name##_open(struct inode *inode, struct file *file) \
 685 { \
 686         return single_open(file, name##_proc_show, NULL); \
 687 } \
 688 \
 689 static const struct proc_ops cifs_##name##_proc_fops = { \
 690         .proc_open      = name##_open, \
 691         .proc_read      = seq_read, \
 692         .proc_lseek     = seq_lseek, \
 693         .proc_release   = single_release, \
 694         .proc_write     = name##_write, \
 695 }
 696
 697 PROC_FILE_DEFINE(rdma_readwrite_threshold);
 698 PROC_FILE_DEFINE(smbd_max_frmr_depth);
 699 PROC_FILE_DEFINE(smbd_keep_alive_interval);
 700 PROC_FILE_DEFINE(smbd_max_receive_size);
 701 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
 702 PROC_FILE_DEFINE(smbd_max_send_size);
 703 PROC_FILE_DEFINE(smbd_send_credit_target);
 704 PROC_FILE_DEFINE(smbd_receive_credit_max);
 705 #endif
 706
 707 static struct proc_dir_entry *proc_fs_cifs;
 708 static const struct proc_ops cifsFYI_proc_ops;
 709 static const struct proc_ops cifs_lookup_cache_proc_ops;
 710 static const struct proc_ops traceSMB_proc_ops;
 711 static const struct proc_ops cifs_security_flags_proc_ops;
 712 static const struct proc_ops cifs_linux_ext_proc_ops;
 713 static const struct proc_ops cifs_mount_params_proc_ops;
 714
 715 void
 716 cifs_proc_init(void)
 717 {
 718         proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
 719         if (proc_fs_cifs == NULL)
 720                 return;
 721
 722         proc_create_single("DebugData", 0, proc_fs_cifs,
 723                         cifs_debug_data_proc_show);
 724
 725         proc_create_single("open_files", 0400, proc_fs_cifs,
 726                         cifs_debug_files_proc_show);
 727
 728         proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
 729         proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
 730         proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
 731         proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
 732                     &cifs_linux_ext_proc_ops);
 733         proc_create("SecurityFlags", 0644, proc_fs_cifs,
 734                     &cifs_security_flags_proc_ops);
 735         proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
 736                     &cifs_lookup_cache_proc_ops);
 737
 738         proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops);
 739
 740 #ifdef CONFIG_CIFS_DFS_UPCALL
 741         proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
 742 #endif
 743
 744 #ifdef CONFIG_CIFS_SMB_DIRECT
 745         proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
 746                 &cifs_rdma_readwrite_threshold_proc_fops);
 747         proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
 748                 &cifs_smbd_max_frmr_depth_proc_fops);
 749         proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
 750                 &cifs_smbd_keep_alive_interval_proc_fops);
 751         proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
 752                 &cifs_smbd_max_receive_size_proc_fops);
 753         proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
 754                 &cifs_smbd_max_fragmented_recv_size_proc_fops);
 755         proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
 756                 &cifs_smbd_max_send_size_proc_fops);
 757         proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
 758                 &cifs_smbd_send_credit_target_proc_fops);
 759         proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
 760                 &cifs_smbd_receive_credit_max_proc_fops);
 761 #endif
 762 }
 763
 764 void
 765 cifs_proc_clean(void)
 766 {
 767         if (proc_fs_cifs == NULL)
 768                 return;
 769
 770         remove_proc_entry("DebugData", proc_fs_cifs);
 771         remove_proc_entry("open_files", proc_fs_cifs);
 772         remove_proc_entry("cifsFYI", proc_fs_cifs);
 773         remove_proc_entry("traceSMB", proc_fs_cifs);
 774         remove_proc_entry("Stats", proc_fs_cifs);
 775         remove_proc_entry("SecurityFlags", proc_fs_cifs);
 776         remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
 777         remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
 778         remove_proc_entry("mount_params", proc_fs_cifs);
 779
 780 #ifdef CONFIG_CIFS_DFS_UPCALL
 781         remove_proc_entry("dfscache", proc_fs_cifs);
 782 #endif
 783 #ifdef CONFIG_CIFS_SMB_DIRECT
 784         remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
 785         remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
 786         remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
 787         remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
 788         remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
 789         remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
 790         remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
 791         remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
 792 #endif
 793         remove_proc_entry("fs/cifs", NULL);
 794 }
 795
 796 static int cifsFYI_proc_show(struct seq_file *m, void *v)
 797 {
 798         seq_printf(m, "%d\n", cifsFYI);
 799         return 0;
 800 }
 801
 802 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
 803 {
 804         return single_open(file, cifsFYI_proc_show, NULL);
 805 }
 806
 807 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
 808                 size_t count, loff_t *ppos)
 809 {
 810         char c[2] = { '\0' };
 811         bool bv;
 812         int rc;
 813
 814         rc = get_user(c[0], buffer);
 815         if (rc)
 816                 return rc;
 817         if (kstrtobool(c, &bv) == 0)
 818                 cifsFYI = bv;
 819         else if ((c[0] > '1') && (c[0] <= '9'))
 820                 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
 821         else
 822                 return -EINVAL;
 823
 824         return count;
 825 }
 826
 827 static const struct proc_ops cifsFYI_proc_ops = {
 828         .proc_open      = cifsFYI_proc_open,
 829         .proc_read      = seq_read,
 830         .proc_lseek     = seq_lseek,
 831         .proc_release   = single_release,
 832         .proc_write     = cifsFYI_proc_write,
 833 };
 834
 835 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
 836 {
 837         seq_printf(m, "%d\n", linuxExtEnabled);
 838         return 0;
 839 }
 840
 841 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
 842 {
 843         return single_open(file, cifs_linux_ext_proc_show, NULL);
 844 }
 845
 846 static ssize_t cifs_linux_ext_proc_write(struct file *file,
 847                 const char __user *buffer, size_t count, loff_t *ppos)
 848 {
 849         int rc;
 850
 851         rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
 852         if (rc)
 853                 return rc;
 854
 855         return count;
 856 }
 857
 858 static const struct proc_ops cifs_linux_ext_proc_ops = {
 859         .proc_open      = cifs_linux_ext_proc_open,
 860         .proc_read      = seq_read,
 861         .proc_lseek     = seq_lseek,
 862         .proc_release   = single_release,
 863         .proc_write     = cifs_linux_ext_proc_write,
 864 };
 865
 866 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
 867 {
 868         seq_printf(m, "%d\n", lookupCacheEnabled);
 869         return 0;
 870 }
 871
 872 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
 873 {
 874         return single_open(file, cifs_lookup_cache_proc_show, NULL);
 875 }
 876
 877 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
 878                 const char __user *buffer, size_t count, loff_t *ppos)
 879 {
 880         int rc;
 881
 882         rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
 883         if (rc)
 884                 return rc;
 885
 886         return count;
 887 }
 888
 889 static const struct proc_ops cifs_lookup_cache_proc_ops = {
 890         .proc_open      = cifs_lookup_cache_proc_open,
 891         .proc_read      = seq_read,
 892         .proc_lseek     = seq_lseek,
 893         .proc_release   = single_release,
 894         .proc_write     = cifs_lookup_cache_proc_write,
 895 };
 896
 897 static int traceSMB_proc_show(struct seq_file *m, void *v)
 898 {
 899         seq_printf(m, "%d\n", traceSMB);
 900         return 0;
 901 }
 902
 903 static int traceSMB_proc_open(struct inode *inode, struct file *file)
 904 {
 905         return single_open(file, traceSMB_proc_show, NULL);
 906 }
 907
 908 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
 909                 size_t count, loff_t *ppos)
 910 {
 911         int rc;
 912
 913         rc = kstrtobool_from_user(buffer, count, &traceSMB);
 914         if (rc)
 915                 return rc;
 916
 917         return count;
 918 }
 919
 920 static const struct proc_ops traceSMB_proc_ops = {
 921         .proc_open      = traceSMB_proc_open,
 922         .proc_read      = seq_read,
 923         .proc_lseek     = seq_lseek,
 924         .proc_release   = single_release,
 925         .proc_write     = traceSMB_proc_write,
 926 };
 927
 928 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
 929 {
 930         seq_printf(m, "0x%x\n", global_secflags);
 931         return 0;
 932 }
 933
 934 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
 935 {
 936         return single_open(file, cifs_security_flags_proc_show, NULL);
 937 }
 938
 939 /*
 940  * Ensure that if someone sets a MUST flag, that we disable all other MAY
 941  * flags except for the ones corresponding to the given MUST flag. If there are
 942  * multiple MUST flags, then try to prefer more secure ones.
 943  */
 944 static void
 945 cifs_security_flags_handle_must_flags(unsigned int *flags)
 946 {
 947         unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
 948
 949         if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
 950                 *flags = CIFSSEC_MUST_KRB5;
 951         else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
 952                 *flags = CIFSSEC_MUST_NTLMSSP;
 953         else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
 954                 *flags = CIFSSEC_MUST_NTLMV2;
 955
 956         *flags |= signflags;
 957 }
 958
 959 static ssize_t cifs_security_flags_proc_write(struct file *file,
 960                 const char __user *buffer, size_t count, loff_t *ppos)
 961 {
 962         int rc;
 963         unsigned int flags;
 964         char flags_string[12];
 965         bool bv;
 966
 967         if ((count < 1) || (count > 11))
 968                 return -EINVAL;
 969
 970         memset(flags_string, 0, 12);
 971
 972         if (copy_from_user(flags_string, buffer, count))
 973                 return -EFAULT;
 974
 975         if (count < 3) {
 976                 /* single char or single char followed by null */
 977                 if (kstrtobool(flags_string, &bv) == 0) {
 978                         global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
 979                         return count;
 980                 } else if (!isdigit(flags_string[0])) {
 981                         cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
 982                                         flags_string);
 983                         return -EINVAL;
 984                 }
 985         }
 986
 987         /* else we have a number */
 988         rc = kstrtouint(flags_string, 0, &flags);
 989         if (rc) {
 990                 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
 991                                 flags_string);
 992                 return rc;
 993         }
 994
 995         cifs_dbg(FYI, "sec flags 0x%x\n", flags);
 996
 997         if (flags == 0)  {
 998                 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
 999                 return -EINVAL;
1000         }
1001
1002         if (flags & ~CIFSSEC_MASK) {
1003                 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
1004                          flags & ~CIFSSEC_MASK);
1005                 return -EINVAL;
1006         }
1007
1008         cifs_security_flags_handle_must_flags(&flags);
1009
1010         /* flags look ok - update the global security flags for cifs module */
1011         global_secflags = flags;
1012         if (global_secflags & CIFSSEC_MUST_SIGN) {
1013                 /* requiring signing implies signing is allowed */
1014                 global_secflags |= CIFSSEC_MAY_SIGN;
1015                 cifs_dbg(FYI, "packet signing now required\n");
1016         } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
1017                 cifs_dbg(FYI, "packet signing disabled\n");
1018         }
1019         /* BB should we turn on MAY flags for other MUST options? */
1020         return count;
1021 }
1022
1023 static const struct proc_ops cifs_security_flags_proc_ops = {
1024         .proc_open      = cifs_security_flags_proc_open,
1025         .proc_read      = seq_read,
1026         .proc_lseek     = seq_lseek,
1027         .proc_release   = single_release,
1028         .proc_write     = cifs_security_flags_proc_write,
1029 };
1030
1031 /* To make it easier to debug, can help to show mount params */
1032 static int cifs_mount_params_proc_show(struct seq_file *m, void *v)
1033 {
1034         const struct fs_parameter_spec *p;
1035         const char *type;
1036
1037         for (p = smb3_fs_parameters; p->name; p++) {
1038                 /* cannot use switch with pointers... */
1039                 if (!p->type) {
1040                         if (p->flags == fs_param_neg_with_no)
1041                                 type = "noflag";
1042                         else
1043                                 type = "flag";
1044                 } else if (p->type == fs_param_is_bool)
1045                         type = "bool";
1046                 else if (p->type == fs_param_is_u32)
1047                         type = "u32";
1048                 else if (p->type == fs_param_is_u64)
1049                         type = "u64";
1050                 else if (p->type == fs_param_is_string)
1051                         type = "string";
1052                 else
1053                         type = "unknown";
1054
1055                 seq_printf(m, "%s:%s\n", p->name, type);
1056         }
1057
1058         return 0;
1059 }
1060
1061 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file)
1062 {
1063         return single_open(file, cifs_mount_params_proc_show, NULL);
1064 }
1065
1066 static const struct proc_ops cifs_mount_params_proc_ops = {
1067         .proc_open      = cifs_mount_params_proc_open,
1068         .proc_read      = seq_read,
1069         .proc_lseek     = seq_lseek,
1070         .proc_release   = single_release,
1071         /* No need for write for now */
1072         /* .proc_write  = cifs_mount_params_proc_write, */
1073 };
1074
1075 #else
1076 inline void cifs_proc_init(void)
1077 {
1078 }
1079
1080 inline void cifs_proc_clean(void)
1081 {
1082 }
1083 #endif /* PROC_FS */