fs/cifs/cifs_debug.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *   fs/cifs_debug.c
   4  *
   5  *   Copyright (C) International Business Machines  Corp., 2000,2005
   6  *
   7  *   Modified by Steve French (sfrench@us.ibm.com)
   8  */
   9 #include <linux/fs.h>
  10 #include <linux/string.h>
  11 #include <linux/ctype.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 = (struct smb_hdr *)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, server));
  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 list_head *tmp;
  54         struct mid_q_entry *mid_entry;
  55
  56         if (server == NULL)
  57                 return;
  58
  59         cifs_dbg(VFS, "Dump pending requests:\n");
  60         spin_lock(&GlobalMid_Lock);
  61         list_for_each(tmp, &server->pending_mid_q) {
  62                 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
  63                 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
  64                          mid_entry->mid_state,
  65                          le16_to_cpu(mid_entry->command),
  66                          mid_entry->pid,
  67                          mid_entry->callback_data,
  68                          mid_entry->mid);
  69 #ifdef CONFIG_CIFS_STATS2
  70                 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
  71                          mid_entry->large_buf,
  72                          mid_entry->resp_buf,
  73                          mid_entry->when_received,
  74                          jiffies);
  75 #endif /* STATS2 */
  76                 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
  77                          mid_entry->multiRsp, mid_entry->multiEnd);
  78                 if (mid_entry->resp_buf) {
  79                         cifs_dump_detail(mid_entry->resp_buf, server);
  80                         cifs_dump_mem("existing buf: ",
  81                                 mid_entry->resp_buf, 62);
  82                 }
  83         }
  84         spin_unlock(&GlobalMid_Lock);
  85 #endif /* CONFIG_CIFS_DEBUG2 */
  86 }
  87
  88 #ifdef CONFIG_PROC_FS
  89 static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
  90 {
  91         __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
  92
  93         seq_printf(m, "%s Mounts: %d ", tcon->treeName, tcon->tc_count);
  94         if (tcon->nativeFileSystem)
  95                 seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
  96         seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
  97                    le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
  98                    le32_to_cpu(tcon->fsAttrInfo.Attributes),
  99                    le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
 100                    tcon->tidStatus);
 101         if (dev_type == FILE_DEVICE_DISK)
 102                 seq_puts(m, " type: DISK ");
 103         else if (dev_type == FILE_DEVICE_CD_ROM)
 104                 seq_puts(m, " type: CDROM ");
 105         else
 106                 seq_printf(m, " type: %d ", dev_type);
 107
 108         seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number);
 109
 110         if ((tcon->seal) ||
 111             (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
 112             (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
 113                 seq_printf(m, " Encrypted");
 114         if (tcon->nocase)
 115                 seq_printf(m, " nocase");
 116         if (tcon->unix_ext)
 117                 seq_printf(m, " POSIX Extensions");
 118         if (tcon->ses->server->ops->dump_share_caps)
 119                 tcon->ses->server->ops->dump_share_caps(m, tcon);
 120         if (tcon->use_witness)
 121                 seq_puts(m, " Witness");
 122
 123         if (tcon->need_reconnect)
 124                 seq_puts(m, "\tDISCONNECTED ");
 125         seq_putc(m, '\n');
 126 }
 127
 128 static void
 129 cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
 130 {
 131         struct TCP_Server_Info *server = chan->server;
 132
 133         seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx"
 134                    "\n\t\tNumber of credits: %d Dialect 0x%x"
 135                    "\n\t\tTCP status: %d Instance: %d"
 136                    "\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d"
 137                    "\n\t\tIn Send: %d In MaxReq Wait: %d",
 138                    i+1, server->conn_id,
 139                    server->credits,
 140                    server->dialect,
 141                    server->tcpStatus,
 142                    server->reconnect_instance,
 143                    server->srv_count,
 144                    server->sec_mode,
 145                    in_flight(server),
 146                    atomic_read(&server->in_send),
 147                    atomic_read(&server->num_waiters));
 148 }
 149
 150 static void
 151 cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
 152 {
 153         struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
 154         struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
 155
 156         seq_printf(m, "\tSpeed: %zu bps\n", iface->speed);
 157         seq_puts(m, "\t\tCapabilities: ");
 158         if (iface->rdma_capable)
 159                 seq_puts(m, "rdma ");
 160         if (iface->rss_capable)
 161                 seq_puts(m, "rss ");
 162         seq_putc(m, '\n');
 163         if (iface->sockaddr.ss_family == AF_INET)
 164                 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
 165         else if (iface->sockaddr.ss_family == AF_INET6)
 166                 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
 167 }
 168
 169 static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
 170 {
 171         struct list_head *stmp, *tmp, *tmp1, *tmp2;
 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> <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(stmp, &cifs_tcp_ses_list) {
 187                 server = list_entry(stmp, struct TCP_Server_Info,
 188                                     tcp_ses_list);
 189                 list_for_each(tmp, &server->smb_ses_list) {
 190                         ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
 191                         list_for_each(tmp1, &ses->tcon_list) {
 192                                 tcon = list_entry(tmp1, struct cifs_tcon, tcon_list);
 193                                 spin_lock(&tcon->open_file_lock);
 194                                 list_for_each(tmp2, &tcon->openFileList) {
 195                                         cfile = list_entry(tmp2, struct cifsFileInfo,
 196                                                      tlist);
 197                                         seq_printf(m,
 198                                                 "0x%x 0x%llx 0x%x %d %d %d %pd",
 199                                                 tcon->tid,
 200                                                 cfile->fid.persistent_fid,
 201                                                 cfile->f_flags,
 202                                                 cfile->count,
 203                                                 cfile->pid,
 204                                                 from_kuid(&init_user_ns, cfile->uid),
 205                                                 cfile->dentry);
 206 #ifdef CONFIG_CIFS_DEBUG2
 207                                         seq_printf(m, " %llu\n", cfile->fid.mid);
 208 #else
 209                                         seq_printf(m, "\n");
 210 #endif /* CIFS_DEBUG2 */
 211                                 }
 212                                 spin_unlock(&tcon->open_file_lock);
 213                         }
 214                 }
 215         }
 216         spin_unlock(&cifs_tcp_ses_lock);
 217         seq_putc(m, '\n');
 218         return 0;
 219 }
 220
 221 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
 222 {
 223         struct list_head *tmp1, *tmp2, *tmp3;
 224         struct mid_q_entry *mid_entry;
 225         struct TCP_Server_Info *server;
 226         struct cifs_ses *ses;
 227         struct cifs_tcon *tcon;
 228         int c, i, j;
 229
 230         seq_puts(m,
 231                     "Display Internal CIFS Data Structures for Debugging\n"
 232                     "---------------------------------------------------\n");
 233         seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
 234         seq_printf(m, "Features:");
 235 #ifdef CONFIG_CIFS_DFS_UPCALL
 236         seq_printf(m, " DFS");
 237 #endif
 238 #ifdef CONFIG_CIFS_FSCACHE
 239         seq_printf(m, ",FSCACHE");
 240 #endif
 241 #ifdef CONFIG_CIFS_SMB_DIRECT
 242         seq_printf(m, ",SMB_DIRECT");
 243 #endif
 244 #ifdef CONFIG_CIFS_STATS2
 245         seq_printf(m, ",STATS2");
 246 #else
 247         seq_printf(m, ",STATS");
 248 #endif
 249 #ifdef CONFIG_CIFS_DEBUG2
 250         seq_printf(m, ",DEBUG2");
 251 #elif defined(CONFIG_CIFS_DEBUG)
 252         seq_printf(m, ",DEBUG");
 253 #endif
 254 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
 255         seq_printf(m, ",ALLOW_INSECURE_LEGACY");
 256 #endif
 257 #ifdef CONFIG_CIFS_WEAK_PW_HASH
 258         seq_printf(m, ",WEAK_PW_HASH");
 259 #endif
 260 #ifdef CONFIG_CIFS_POSIX
 261         seq_printf(m, ",CIFS_POSIX");
 262 #endif
 263 #ifdef CONFIG_CIFS_UPCALL
 264         seq_printf(m, ",UPCALL(SPNEGO)");
 265 #endif
 266 #ifdef CONFIG_CIFS_XATTR
 267         seq_printf(m, ",XATTR");
 268 #endif
 269         seq_printf(m, ",ACL");
 270 #ifdef CONFIG_CIFS_SWN_UPCALL
 271         seq_puts(m, ",WITNESS");
 272 #endif
 273         seq_putc(m, '\n');
 274         seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
 275         seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
 276
 277         seq_printf(m, "\nServers: ");
 278
 279         c = 0;
 280         spin_lock(&cifs_tcp_ses_lock);
 281         list_for_each(tmp1, &cifs_tcp_ses_list) {
 282                 server = list_entry(tmp1, struct TCP_Server_Info,
 283                                     tcp_ses_list);
 284
 285                 /* channel info will be printed as a part of sessions below */
 286                 if (server->is_channel)
 287                         continue;
 288
 289                 c++;
 290                 seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
 291                         c, server->conn_id);
 292
 293                 if (server->hostname)
 294                         seq_printf(m, "Hostname: %s ", server->hostname);
 295 #ifdef CONFIG_CIFS_SMB_DIRECT
 296                 if (!server->rdma)
 297                         goto skip_rdma;
 298
 299                 if (!server->smbd_conn) {
 300                         seq_printf(m, "\nSMBDirect transport not available");
 301                         goto skip_rdma;
 302                 }
 303
 304                 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
 305                         "transport status: %x",
 306                         server->smbd_conn->protocol,
 307                         server->smbd_conn->transport_status);
 308                 seq_printf(m, "\nConn receive_credit_max: %x "
 309                         "send_credit_target: %x max_send_size: %x",
 310                         server->smbd_conn->receive_credit_max,
 311                         server->smbd_conn->send_credit_target,
 312                         server->smbd_conn->max_send_size);
 313                 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
 314                         "max_fragmented_send_size: %x max_receive_size:%x",
 315                         server->smbd_conn->max_fragmented_recv_size,
 316                         server->smbd_conn->max_fragmented_send_size,
 317                         server->smbd_conn->max_receive_size);
 318                 seq_printf(m, "\nConn keep_alive_interval: %x "
 319                         "max_readwrite_size: %x rdma_readwrite_threshold: %x",
 320                         server->smbd_conn->keep_alive_interval,
 321                         server->smbd_conn->max_readwrite_size,
 322                         server->smbd_conn->rdma_readwrite_threshold);
 323                 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
 324                         "count_put_receive_buffer: %x count_send_empty: %x",
 325                         server->smbd_conn->count_get_receive_buffer,
 326                         server->smbd_conn->count_put_receive_buffer,
 327                         server->smbd_conn->count_send_empty);
 328                 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
 329                         "count_enqueue_reassembly_queue: %x "
 330                         "count_dequeue_reassembly_queue: %x "
 331                         "fragment_reassembly_remaining: %x "
 332                         "reassembly_data_length: %x "
 333                         "reassembly_queue_length: %x",
 334                         server->smbd_conn->count_reassembly_queue,
 335                         server->smbd_conn->count_enqueue_reassembly_queue,
 336                         server->smbd_conn->count_dequeue_reassembly_queue,
 337                         server->smbd_conn->fragment_reassembly_remaining,
 338                         server->smbd_conn->reassembly_data_length,
 339                         server->smbd_conn->reassembly_queue_length);
 340                 seq_printf(m, "\nCurrent Credits send_credits: %x "
 341                         "receive_credits: %x receive_credit_target: %x",
 342                         atomic_read(&server->smbd_conn->send_credits),
 343                         atomic_read(&server->smbd_conn->receive_credits),
 344                         server->smbd_conn->receive_credit_target);
 345                 seq_printf(m, "\nPending send_pending: %x ",
 346                         atomic_read(&server->smbd_conn->send_pending));
 347                 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
 348                         "count_empty_packet_queue: %x",
 349                         server->smbd_conn->count_receive_queue,
 350                         server->smbd_conn->count_empty_packet_queue);
 351                 seq_printf(m, "\nMR responder_resources: %x "
 352                         "max_frmr_depth: %x mr_type: %x",
 353                         server->smbd_conn->responder_resources,
 354                         server->smbd_conn->max_frmr_depth,
 355                         server->smbd_conn->mr_type);
 356                 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
 357                         atomic_read(&server->smbd_conn->mr_ready_count),
 358                         atomic_read(&server->smbd_conn->mr_used_count));
 359 skip_rdma:
 360 #endif
 361                 seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
 362                         server->credits,  server->dialect);
 363                 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
 364                         seq_printf(m, " COMPRESS_LZNT1");
 365                 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
 366                         seq_printf(m, " COMPRESS_LZ77");
 367                 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
 368                         seq_printf(m, " COMPRESS_LZ77_HUFF");
 369                 if (server->sign)
 370                         seq_printf(m, " signed");
 371                 if (server->posix_ext_supported)
 372                         seq_printf(m, " posix");
 373
 374                 if (server->rdma)
 375                         seq_printf(m, "\nRDMA ");
 376                 seq_printf(m, "\nTCP status: %d Instance: %d"
 377                                 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
 378                                 server->tcpStatus,
 379                                 server->reconnect_instance,
 380                                 server->srv_count,
 381                                 server->sec_mode, in_flight(server));
 382
 383                 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
 384                                 atomic_read(&server->in_send),
 385                                 atomic_read(&server->num_waiters));
 386
 387                 seq_printf(m, "\n\n\tSessions: ");
 388                 i = 0;
 389                 list_for_each(tmp2, &server->smb_ses_list) {
 390                         ses = list_entry(tmp2, struct cifs_ses,
 391                                          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->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->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->chan_count > 1) {
 428                                 seq_printf(m, "\n\n\tExtra Channels: %zu ",
 429                                            ses->chan_count-1);
 430                                 for (j = 1; j < ses->chan_count; j++)
 431                                         cifs_dump_channel(m, j, &ses->chans[j]);
 432                         }
 433
 434                         seq_puts(m, "\n\n\tShares: ");
 435                         j = 0;
 436
 437                         seq_printf(m, "\n\t%d) IPC: ", j);
 438                         if (ses->tcon_ipc)
 439                                 cifs_debug_tcon(m, ses->tcon_ipc);
 440                         else
 441                                 seq_puts(m, "none\n");
 442
 443                         list_for_each(tmp3, &ses->tcon_list) {
 444                                 tcon = list_entry(tmp3, struct cifs_tcon,
 445                                                   tcon_list);
 446                                 ++j;
 447                                 seq_printf(m, "\n\t%d) ", j);
 448                                 cifs_debug_tcon(m, tcon);
 449                         }
 450
 451                         spin_lock(&ses->iface_lock);
 452                         if (ses->iface_count)
 453                                 seq_printf(m, "\n\n\tServer interfaces: %zu",
 454                                            ses->iface_count);
 455                         for (j = 0; j < ses->iface_count; j++) {
 456                                 struct cifs_server_iface *iface;
 457
 458                                 iface = &ses->iface_list[j];
 459                                 seq_printf(m, "\n\t%d)", j+1);
 460                                 cifs_dump_iface(m, iface);
 461                                 if (is_ses_using_iface(ses, iface))
 462                                         seq_puts(m, "\t\t[CONNECTED]\n");
 463                         }
 464                         spin_unlock(&ses->iface_lock);
 465                 }
 466                 if (i == 0)
 467                         seq_printf(m, "\n\t\t[NONE]");
 468
 469                 seq_puts(m, "\n\n\tMIDs: ");
 470                 spin_lock(&GlobalMid_Lock);
 471                 list_for_each(tmp3, &server->pending_mid_q) {
 472                         mid_entry = list_entry(tmp3, struct mid_q_entry,
 473                                         qhead);
 474                         seq_printf(m, "\n\tState: %d com: %d pid:"
 475                                         " %d cbdata: %p mid %llu\n",
 476                                         mid_entry->mid_state,
 477                                         le16_to_cpu(mid_entry->command),
 478                                         mid_entry->pid,
 479                                         mid_entry->callback_data,
 480                                         mid_entry->mid);
 481                 }
 482                 spin_unlock(&GlobalMid_Lock);
 483                 seq_printf(m, "\n--\n");
 484         }
 485         if (c == 0)
 486                 seq_printf(m, "\n\t[NONE]");
 487
 488         spin_unlock(&cifs_tcp_ses_lock);
 489         seq_putc(m, '\n');
 490         cifs_swn_dump(m);
 491
 492         /* BB add code to dump additional info such as TCP session info now */
 493         return 0;
 494 }
 495
 496 static ssize_t cifs_stats_proc_write(struct file *file,
 497                 const char __user *buffer, size_t count, loff_t *ppos)
 498 {
 499         bool bv;
 500         int rc;
 501         struct list_head *tmp1, *tmp2, *tmp3;
 502         struct TCP_Server_Info *server;
 503         struct cifs_ses *ses;
 504         struct cifs_tcon *tcon;
 505
 506         rc = kstrtobool_from_user(buffer, count, &bv);
 507         if (rc == 0) {
 508 #ifdef CONFIG_CIFS_STATS2
 509                 int i;
 510
 511                 atomic_set(&totBufAllocCount, 0);
 512                 atomic_set(&totSmBufAllocCount, 0);
 513 #endif /* CONFIG_CIFS_STATS2 */
 514                 atomic_set(&tcpSesReconnectCount, 0);
 515                 atomic_set(&tconInfoReconnectCount, 0);
 516
 517                 spin_lock(&GlobalMid_Lock);
 518                 GlobalMaxActiveXid = 0;
 519                 GlobalCurrentXid = 0;
 520                 spin_unlock(&GlobalMid_Lock);
 521                 spin_lock(&cifs_tcp_ses_lock);
 522                 list_for_each(tmp1, &cifs_tcp_ses_list) {
 523                         server = list_entry(tmp1, struct TCP_Server_Info,
 524                                             tcp_ses_list);
 525                         server->max_in_flight = 0;
 526 #ifdef CONFIG_CIFS_STATS2
 527                         for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
 528                                 atomic_set(&server->num_cmds[i], 0);
 529                                 atomic_set(&server->smb2slowcmd[i], 0);
 530                                 server->time_per_cmd[i] = 0;
 531                                 server->slowest_cmd[i] = 0;
 532                                 server->fastest_cmd[0] = 0;
 533                         }
 534 #endif /* CONFIG_CIFS_STATS2 */
 535                         list_for_each(tmp2, &server->smb_ses_list) {
 536                                 ses = list_entry(tmp2, struct cifs_ses,
 537                                                  smb_ses_list);
 538                                 list_for_each(tmp3, &ses->tcon_list) {
 539                                         tcon = list_entry(tmp3,
 540                                                           struct cifs_tcon,
 541                                                           tcon_list);
 542                                         atomic_set(&tcon->num_smbs_sent, 0);
 543                                         spin_lock(&tcon->stat_lock);
 544                                         tcon->bytes_read = 0;
 545                                         tcon->bytes_written = 0;
 546                                         spin_unlock(&tcon->stat_lock);
 547                                         if (server->ops->clear_stats)
 548                                                 server->ops->clear_stats(tcon);
 549                                 }
 550                         }
 551                 }
 552                 spin_unlock(&cifs_tcp_ses_lock);
 553         } else {
 554                 return rc;
 555         }
 556
 557         return count;
 558 }
 559
 560 static int cifs_stats_proc_show(struct seq_file *m, void *v)
 561 {
 562         int i;
 563 #ifdef CONFIG_CIFS_STATS2
 564         int j;
 565 #endif /* STATS2 */
 566         struct list_head *tmp1, *tmp2, *tmp3;
 567         struct TCP_Server_Info *server;
 568         struct cifs_ses *ses;
 569         struct cifs_tcon *tcon;
 570
 571         seq_printf(m, "Resources in use\nCIFS Session: %d\n",
 572                         sesInfoAllocCount.counter);
 573         seq_printf(m, "Share (unique mount targets): %d\n",
 574                         tconInfoAllocCount.counter);
 575         seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
 576                         bufAllocCount.counter,
 577                         cifs_min_rcv + tcpSesAllocCount.counter);
 578         seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
 579                         smBufAllocCount.counter, cifs_min_small);
 580 #ifdef CONFIG_CIFS_STATS2
 581         seq_printf(m, "Total Large %d Small %d Allocations\n",
 582                                 atomic_read(&totBufAllocCount),
 583                                 atomic_read(&totSmBufAllocCount));
 584 #endif /* CONFIG_CIFS_STATS2 */
 585
 586         seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
 587         seq_printf(m,
 588                 "\n%d session %d share reconnects\n",
 589                 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
 590
 591         seq_printf(m,
 592                 "Total vfs operations: %d maximum at one time: %d\n",
 593                 GlobalCurrentXid, GlobalMaxActiveXid);
 594
 595         i = 0;
 596         spin_lock(&cifs_tcp_ses_lock);
 597         list_for_each(tmp1, &cifs_tcp_ses_list) {
 598                 server = list_entry(tmp1, struct TCP_Server_Info,
 599                                     tcp_ses_list);
 600                 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
 601 #ifdef CONFIG_CIFS_STATS2
 602                 seq_puts(m, "\nTotal time spent processing by command. Time ");
 603                 seq_printf(m, "units are jiffies (%d per second)\n", HZ);
 604                 seq_puts(m, "  SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
 605                 seq_puts(m, "  --------\t------\t----------\t-------\t-------\n");
 606                 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
 607                         seq_printf(m, "  %d\t\t%d\t%llu\t\t%u\t%u\n", j,
 608                                 atomic_read(&server->num_cmds[j]),
 609                                 server->time_per_cmd[j],
 610                                 server->fastest_cmd[j],
 611                                 server->slowest_cmd[j]);
 612                 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
 613                         if (atomic_read(&server->smb2slowcmd[j]))
 614                                 seq_printf(m, "  %d slow responses from %s for command %d\n",
 615                                         atomic_read(&server->smb2slowcmd[j]),
 616                                         server->hostname, j);
 617 #endif /* STATS2 */
 618                 list_for_each(tmp2, &server->smb_ses_list) {
 619                         ses = list_entry(tmp2, struct cifs_ses,
 620                                          smb_ses_list);
 621                         list_for_each(tmp3, &ses->tcon_list) {
 622                                 tcon = list_entry(tmp3,
 623                                                   struct cifs_tcon,
 624                                                   tcon_list);
 625                                 i++;
 626                                 seq_printf(m, "\n%d) %s", i, tcon->treeName);
 627                                 if (tcon->need_reconnect)
 628                                         seq_puts(m, "\tDISCONNECTED ");
 629                                 seq_printf(m, "\nSMBs: %d",
 630                                            atomic_read(&tcon->num_smbs_sent));
 631                                 if (server->ops->print_stats)
 632                                         server->ops->print_stats(m, tcon);
 633                         }
 634                 }
 635         }
 636         spin_unlock(&cifs_tcp_ses_lock);
 637
 638         seq_putc(m, '\n');
 639         return 0;
 640 }
 641
 642 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
 643 {
 644         return single_open(file, cifs_stats_proc_show, NULL);
 645 }
 646
 647 static const struct proc_ops cifs_stats_proc_ops = {
 648         .proc_open      = cifs_stats_proc_open,
 649         .proc_read      = seq_read,
 650         .proc_lseek     = seq_lseek,
 651         .proc_release   = single_release,
 652         .proc_write     = cifs_stats_proc_write,
 653 };
 654
 655 #ifdef CONFIG_CIFS_SMB_DIRECT
 656 #define PROC_FILE_DEFINE(name) \
 657 static ssize_t name##_write(struct file *file, const char __user *buffer, \
 658         size_t count, loff_t *ppos) \
 659 { \
 660         int rc; \
 661         rc = kstrtoint_from_user(buffer, count, 10, & name); \
 662         if (rc) \
 663                 return rc; \
 664         return count; \
 665 } \
 666 static int name##_proc_show(struct seq_file *m, void *v) \
 667 { \
 668         seq_printf(m, "%d\n", name ); \
 669         return 0; \
 670 } \
 671 static int name##_open(struct inode *inode, struct file *file) \
 672 { \
 673         return single_open(file, name##_proc_show, NULL); \
 674 } \
 675 \
 676 static const struct proc_ops cifs_##name##_proc_fops = { \
 677         .proc_open      = name##_open, \
 678         .proc_read      = seq_read, \
 679         .proc_lseek     = seq_lseek, \
 680         .proc_release   = single_release, \
 681         .proc_write     = name##_write, \
 682 }
 683
 684 PROC_FILE_DEFINE(rdma_readwrite_threshold);
 685 PROC_FILE_DEFINE(smbd_max_frmr_depth);
 686 PROC_FILE_DEFINE(smbd_keep_alive_interval);
 687 PROC_FILE_DEFINE(smbd_max_receive_size);
 688 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
 689 PROC_FILE_DEFINE(smbd_max_send_size);
 690 PROC_FILE_DEFINE(smbd_send_credit_target);
 691 PROC_FILE_DEFINE(smbd_receive_credit_max);
 692 #endif
 693
 694 static struct proc_dir_entry *proc_fs_cifs;
 695 static const struct proc_ops cifsFYI_proc_ops;
 696 static const struct proc_ops cifs_lookup_cache_proc_ops;
 697 static const struct proc_ops traceSMB_proc_ops;
 698 static const struct proc_ops cifs_security_flags_proc_ops;
 699 static const struct proc_ops cifs_linux_ext_proc_ops;
 700 static const struct proc_ops cifs_mount_params_proc_ops;
 701
 702 void
 703 cifs_proc_init(void)
 704 {
 705         proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
 706         if (proc_fs_cifs == NULL)
 707                 return;
 708
 709         proc_create_single("DebugData", 0, proc_fs_cifs,
 710                         cifs_debug_data_proc_show);
 711
 712         proc_create_single("open_files", 0400, proc_fs_cifs,
 713                         cifs_debug_files_proc_show);
 714
 715         proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
 716         proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
 717         proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
 718         proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
 719                     &cifs_linux_ext_proc_ops);
 720         proc_create("SecurityFlags", 0644, proc_fs_cifs,
 721                     &cifs_security_flags_proc_ops);
 722         proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
 723                     &cifs_lookup_cache_proc_ops);
 724
 725         proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops);
 726
 727 #ifdef CONFIG_CIFS_DFS_UPCALL
 728         proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
 729 #endif
 730
 731 #ifdef CONFIG_CIFS_SMB_DIRECT
 732         proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
 733                 &cifs_rdma_readwrite_threshold_proc_fops);
 734         proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
 735                 &cifs_smbd_max_frmr_depth_proc_fops);
 736         proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
 737                 &cifs_smbd_keep_alive_interval_proc_fops);
 738         proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
 739                 &cifs_smbd_max_receive_size_proc_fops);
 740         proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
 741                 &cifs_smbd_max_fragmented_recv_size_proc_fops);
 742         proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
 743                 &cifs_smbd_max_send_size_proc_fops);
 744         proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
 745                 &cifs_smbd_send_credit_target_proc_fops);
 746         proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
 747                 &cifs_smbd_receive_credit_max_proc_fops);
 748 #endif
 749 }
 750
 751 void
 752 cifs_proc_clean(void)
 753 {
 754         if (proc_fs_cifs == NULL)
 755                 return;
 756
 757         remove_proc_entry("DebugData", proc_fs_cifs);
 758         remove_proc_entry("open_files", proc_fs_cifs);
 759         remove_proc_entry("cifsFYI", proc_fs_cifs);
 760         remove_proc_entry("traceSMB", proc_fs_cifs);
 761         remove_proc_entry("Stats", proc_fs_cifs);
 762         remove_proc_entry("SecurityFlags", proc_fs_cifs);
 763         remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
 764         remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
 765         remove_proc_entry("mount_params", proc_fs_cifs);
 766
 767 #ifdef CONFIG_CIFS_DFS_UPCALL
 768         remove_proc_entry("dfscache", proc_fs_cifs);
 769 #endif
 770 #ifdef CONFIG_CIFS_SMB_DIRECT
 771         remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
 772         remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
 773         remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
 774         remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
 775         remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
 776         remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
 777         remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
 778         remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
 779 #endif
 780         remove_proc_entry("fs/cifs", NULL);
 781 }
 782
 783 static int cifsFYI_proc_show(struct seq_file *m, void *v)
 784 {
 785         seq_printf(m, "%d\n", cifsFYI);
 786         return 0;
 787 }
 788
 789 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
 790 {
 791         return single_open(file, cifsFYI_proc_show, NULL);
 792 }
 793
 794 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
 795                 size_t count, loff_t *ppos)
 796 {
 797         char c[2] = { '\0' };
 798         bool bv;
 799         int rc;
 800
 801         rc = get_user(c[0], buffer);
 802         if (rc)
 803                 return rc;
 804         if (strtobool(c, &bv) == 0)
 805                 cifsFYI = bv;
 806         else if ((c[0] > '1') && (c[0] <= '9'))
 807                 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
 808         else
 809                 return -EINVAL;
 810
 811         return count;
 812 }
 813
 814 static const struct proc_ops cifsFYI_proc_ops = {
 815         .proc_open      = cifsFYI_proc_open,
 816         .proc_read      = seq_read,
 817         .proc_lseek     = seq_lseek,
 818         .proc_release   = single_release,
 819         .proc_write     = cifsFYI_proc_write,
 820 };
 821
 822 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
 823 {
 824         seq_printf(m, "%d\n", linuxExtEnabled);
 825         return 0;
 826 }
 827
 828 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
 829 {
 830         return single_open(file, cifs_linux_ext_proc_show, NULL);
 831 }
 832
 833 static ssize_t cifs_linux_ext_proc_write(struct file *file,
 834                 const char __user *buffer, size_t count, loff_t *ppos)
 835 {
 836         int rc;
 837
 838         rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
 839         if (rc)
 840                 return rc;
 841
 842         return count;
 843 }
 844
 845 static const struct proc_ops cifs_linux_ext_proc_ops = {
 846         .proc_open      = cifs_linux_ext_proc_open,
 847         .proc_read      = seq_read,
 848         .proc_lseek     = seq_lseek,
 849         .proc_release   = single_release,
 850         .proc_write     = cifs_linux_ext_proc_write,
 851 };
 852
 853 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
 854 {
 855         seq_printf(m, "%d\n", lookupCacheEnabled);
 856         return 0;
 857 }
 858
 859 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
 860 {
 861         return single_open(file, cifs_lookup_cache_proc_show, NULL);
 862 }
 863
 864 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
 865                 const char __user *buffer, size_t count, loff_t *ppos)
 866 {
 867         int rc;
 868
 869         rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
 870         if (rc)
 871                 return rc;
 872
 873         return count;
 874 }
 875
 876 static const struct proc_ops cifs_lookup_cache_proc_ops = {
 877         .proc_open      = cifs_lookup_cache_proc_open,
 878         .proc_read      = seq_read,
 879         .proc_lseek     = seq_lseek,
 880         .proc_release   = single_release,
 881         .proc_write     = cifs_lookup_cache_proc_write,
 882 };
 883
 884 static int traceSMB_proc_show(struct seq_file *m, void *v)
 885 {
 886         seq_printf(m, "%d\n", traceSMB);
 887         return 0;
 888 }
 889
 890 static int traceSMB_proc_open(struct inode *inode, struct file *file)
 891 {
 892         return single_open(file, traceSMB_proc_show, NULL);
 893 }
 894
 895 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
 896                 size_t count, loff_t *ppos)
 897 {
 898         int rc;
 899
 900         rc = kstrtobool_from_user(buffer, count, &traceSMB);
 901         if (rc)
 902                 return rc;
 903
 904         return count;
 905 }
 906
 907 static const struct proc_ops traceSMB_proc_ops = {
 908         .proc_open      = traceSMB_proc_open,
 909         .proc_read      = seq_read,
 910         .proc_lseek     = seq_lseek,
 911         .proc_release   = single_release,
 912         .proc_write     = traceSMB_proc_write,
 913 };
 914
 915 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
 916 {
 917         seq_printf(m, "0x%x\n", global_secflags);
 918         return 0;
 919 }
 920
 921 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
 922 {
 923         return single_open(file, cifs_security_flags_proc_show, NULL);
 924 }
 925
 926 /*
 927  * Ensure that if someone sets a MUST flag, that we disable all other MAY
 928  * flags except for the ones corresponding to the given MUST flag. If there are
 929  * multiple MUST flags, then try to prefer more secure ones.
 930  */
 931 static void
 932 cifs_security_flags_handle_must_flags(unsigned int *flags)
 933 {
 934         unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
 935
 936         if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
 937                 *flags = CIFSSEC_MUST_KRB5;
 938         else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
 939                 *flags = CIFSSEC_MUST_NTLMSSP;
 940         else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
 941                 *flags = CIFSSEC_MUST_NTLMV2;
 942         else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM)
 943                 *flags = CIFSSEC_MUST_NTLM;
 944         else if (CIFSSEC_MUST_LANMAN &&
 945                  (*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN)
 946                 *flags = CIFSSEC_MUST_LANMAN;
 947         else if (CIFSSEC_MUST_PLNTXT &&
 948                  (*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT)
 949                 *flags = CIFSSEC_MUST_PLNTXT;
 950
 951         *flags |= signflags;
 952 }
 953
 954 static ssize_t cifs_security_flags_proc_write(struct file *file,
 955                 const char __user *buffer, size_t count, loff_t *ppos)
 956 {
 957         int rc;
 958         unsigned int flags;
 959         char flags_string[12];
 960         bool bv;
 961
 962         if ((count < 1) || (count > 11))
 963                 return -EINVAL;
 964
 965         memset(flags_string, 0, 12);
 966
 967         if (copy_from_user(flags_string, buffer, count))
 968                 return -EFAULT;
 969
 970         if (count < 3) {
 971                 /* single char or single char followed by null */
 972                 if (strtobool(flags_string, &bv) == 0) {
 973                         global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
 974                         return count;
 975                 } else if (!isdigit(flags_string[0])) {
 976                         cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
 977                                         flags_string);
 978                         return -EINVAL;
 979                 }
 980         }
 981
 982         /* else we have a number */
 983         rc = kstrtouint(flags_string, 0, &flags);
 984         if (rc) {
 985                 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
 986                                 flags_string);
 987                 return rc;
 988         }
 989
 990         cifs_dbg(FYI, "sec flags 0x%x\n", flags);
 991
 992         if (flags == 0)  {
 993                 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
 994                 return -EINVAL;
 995         }
 996
 997         if (flags & ~CIFSSEC_MASK) {
 998                 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
 999                          flags & ~CIFSSEC_MASK);
1000                 return -EINVAL;
1001         }
1002
1003         cifs_security_flags_handle_must_flags(&flags);
1004
1005         /* flags look ok - update the global security flags for cifs module */
1006         global_secflags = flags;
1007         if (global_secflags & CIFSSEC_MUST_SIGN) {
1008                 /* requiring signing implies signing is allowed */
1009                 global_secflags |= CIFSSEC_MAY_SIGN;
1010                 cifs_dbg(FYI, "packet signing now required\n");
1011         } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
1012                 cifs_dbg(FYI, "packet signing disabled\n");
1013         }
1014         /* BB should we turn on MAY flags for other MUST options? */
1015         return count;
1016 }
1017
1018 static const struct proc_ops cifs_security_flags_proc_ops = {
1019         .proc_open      = cifs_security_flags_proc_open,
1020         .proc_read      = seq_read,
1021         .proc_lseek     = seq_lseek,
1022         .proc_release   = single_release,
1023         .proc_write     = cifs_security_flags_proc_write,
1024 };
1025
1026 /* To make it easier to debug, can help to show mount params */
1027 static int cifs_mount_params_proc_show(struct seq_file *m, void *v)
1028 {
1029         const struct fs_parameter_spec *p;
1030         const char *type;
1031
1032         for (p = smb3_fs_parameters; p->name; p++) {
1033                 /* cannot use switch with pointers... */
1034                 if (!p->type) {
1035                         if (p->flags == fs_param_neg_with_no)
1036                                 type = "noflag";
1037                         else
1038                                 type = "flag";
1039                 } else if (p->type == fs_param_is_bool)
1040                         type = "bool";
1041                 else if (p->type == fs_param_is_u32)
1042                         type = "u32";
1043                 else if (p->type == fs_param_is_u64)
1044                         type = "u64";
1045                 else if (p->type == fs_param_is_string)
1046                         type = "string";
1047                 else
1048                         type = "unknown";
1049
1050                 seq_printf(m, "%s:%s\n", p->name, type);
1051         }
1052
1053         return 0;
1054 }
1055
1056 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file)
1057 {
1058         return single_open(file, cifs_mount_params_proc_show, NULL);
1059 }
1060
1061 static const struct proc_ops cifs_mount_params_proc_ops = {
1062         .proc_open      = cifs_mount_params_proc_open,
1063         .proc_read      = seq_read,
1064         .proc_lseek     = seq_lseek,
1065         .proc_release   = single_release,
1066         /* No need for write for now */
1067         /* .proc_write  = cifs_mount_params_proc_write, */
1068 };
1069
1070 #else
1071 inline void cifs_proc_init(void)
1072 {
1073 }
1074
1075 inline void cifs_proc_clean(void)
1076 {
1077 }
1078 #endif /* PROC_FS */