lustre/mds/lproc_mds.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (C) 2002 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22 #define DEBUG_SUBSYSTEM S_CLASS
  23
  24 #include <linux/version.h>
  25 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
  26 #include <asm/statfs.h>
  27 #endif
  28 #include <linux/obd.h>
  29 #include <linux/obd_class.h>
  30 #include <linux/lprocfs_status.h>
  31 #include "mds_internal.h"
  32
  33 #ifndef LPROCFS
  34
  35 struct lprocfs_vars lprocfs_mds_obd_vars[]  = { {0} };
  36 struct lprocfs_vars lprocfs_mds_module_vars[] = { {0} };
  37 struct lprocfs_vars lprocfs_mdt_obd_vars[] = { {0} };
  38 struct lprocfs_vars lprocfs_mdt_module_vars[] = { {0} };
  39
  40 #else
  41
  42 static int lprocfs_mds_rd_mntdev(char *page, char **start, off_t off,
  43                                  int count, int *eof, void *data)
  44 {
  45         struct obd_device* obd = (struct obd_device *)data;
  46
  47         LASSERT(obd != NULL);
  48         LASSERT(obd->u.mds.mds_vfsmnt->mnt_devname);
  49         *eof = 1;
  50
  51         return snprintf(page, count, "%s\n",
  52                         obd->u.mds.mds_vfsmnt->mnt_devname);
  53 }
  54
  55 static int lprocfs_mds_wr_evict_client(struct file *file, const char *buffer,
  56                                        unsigned long count, void *data)
  57 {
  58         struct obd_device *obd = data;
  59         struct obd_export *doomed_exp = NULL;
  60         struct obd_uuid doomed;
  61         struct list_head *p;
  62         char tmpbuf[sizeof(doomed)];
  63
  64         sscanf(buffer, "%40s", tmpbuf);
  65         obd_str2uuid(&doomed, tmpbuf);
  66
  67         spin_lock(&obd->obd_dev_lock);
  68         list_for_each(p, &obd->obd_exports) {
  69                 doomed_exp = list_entry(p, struct obd_export, exp_obd_chain);
  70                 if (obd_uuid_equals(&doomed, &doomed_exp->exp_client_uuid)) {
  71                         class_export_get(doomed_exp);
  72                         break;
  73                 }
  74                 doomed_exp = NULL;
  75         }
  76         spin_unlock(&obd->obd_dev_lock);
  77
  78         if (doomed_exp == NULL) {
  79                 CERROR("can't disconnect %s: no export found\n",
  80                        doomed.uuid);
  81         } else {
  82                 CERROR("evicting %s at adminstrative request\n",
  83                        doomed.uuid);
  84                 ptlrpc_fail_export(doomed_exp);
  85                 class_export_put(doomed_exp);
  86         }
  87         return count;
  88 }
  89
  90 static int lprocfs_mds_wr_config_update(struct file *file, const char *buffer,
  91                                         unsigned long count, void *data)
  92 {
  93         struct obd_device *obd = data;
  94         ENTRY;
  95
  96         mds_dt_update_config(obd, 0);
  97         RETURN(count);
  98 }
  99
 100 static int lprocfs_rd_filesopen(char *page, char **start, off_t off,
 101                                 int count, int *eof, void *data)
 102 {
 103         struct obd_device *obd = data;
 104         LASSERT(obd != NULL);
 105         *eof = 1;
 106
 107         return snprintf(page, count, "%d\n",
 108                         atomic_read(&obd->u.mds.mds_open_count));
 109 }
 110
 111 static int lprocfs_rd_last_fid(char *page, char **start, off_t off,
 112                                int count, int *eof, void *data)
 113 {
 114         struct obd_device *obd = (struct obd_device *)data;
 115         struct mds_obd *mds = &obd->u.mds;
 116         __u64 last_fid;
 117
 118         spin_lock(&mds->mds_last_fid_lock);
 119         last_fid = mds->mds_last_fid;
 120         spin_unlock(&mds->mds_last_fid_lock);
 121
 122         *eof = 1;
 123         return snprintf(page, count, LPD64"\n", last_fid);
 124 }
 125
 126 static int lprocfs_rd_group(char *page, char **start, off_t off,
 127                             int count, int *eof, void *data)
 128 {
 129         struct obd_device *obd = (struct obd_device *)data;
 130         struct mds_obd *mds = &obd->u.mds;
 131
 132         *eof = 1;
 133         return snprintf(page, count, "%lu\n",
 134                         (unsigned long)mds->mds_num);
 135 }
 136
 137 static int lprocfs_rd_capa(char *page, char **start, off_t off,
 138                            int count, int *eof, void *data)
 139 {
 140         struct obd_device *obd = (struct obd_device *)data;
 141         LASSERT(obd != NULL);
 142
 143         return snprintf(page, count, "%d\n",
 144                         obd->u.mds.mds_capa_stat);
 145 }
 146
 147 static int lprocfs_wr_capa(struct file *file, const char *buffer,
 148                            unsigned long count, void *data)
 149 {
 150         struct obd_device *obd = data;
 151         int val, rc;
 152
 153         rc = lprocfs_write_helper(buffer, count, &val);
 154         if (rc)
 155                 return rc;
 156
 157         mds_update_capa_stat(obd, val);
 158         return count;
 159 }
 160
 161 static int lprocfs_rd_capa_timeout(char *page, char **start, off_t off,
 162                                        int count, int *eof, void *data)
 163 {
 164         struct obd_device *obd = (struct obd_device *)data;
 165         LASSERT(obd != NULL);
 166
 167         return snprintf(page, count, "%lu\n",
 168                         obd->u.mds.mds_capa_timeout);
 169 }
 170
 171 static int lprocfs_wr_capa_timeout(struct file *file, const char *buffer,
 172                                        unsigned long count, void *data)
 173 {
 174         struct obd_device *obd = data;
 175         int val, rc;
 176
 177         rc = lprocfs_write_helper(buffer, count, &val);
 178         if (rc)
 179                 return rc;
 180
 181         mds_update_capa_timeout(obd, val);
 182         return count;
 183 }
 184
 185 static int lprocfs_rd_capa_key_timeout(char *page, char **start, off_t off,
 186                                            int count, int *eof, void *data)
 187 {
 188         struct obd_device *obd = (struct obd_device *)data;
 189         LASSERT(obd != NULL);
 190
 191         return snprintf(page, count, "%lu\n",
 192                         obd->u.mds.mds_capa_key_timeout);
 193 }
 194
 195 static int lprocfs_wr_capa_key_timeout(struct file *file, const char *buffer,
 196                                            unsigned long count, void *data)
 197 {
 198         struct obd_device *obd = data;
 199         int val, rc;
 200
 201         rc = lprocfs_write_helper(buffer, count, &val);
 202         if (rc)
 203                 return rc;
 204
 205         rc = mds_update_capa_key_timeout(obd, val);
 206         return rc ?: count;
 207 }
 208
 209 struct lprocfs_vars lprocfs_mds_obd_vars[] = {
 210         { "uuid",         lprocfs_rd_uuid,        0, 0 },
 211         { "blocksize",    lprocfs_rd_blksize,     0, 0 },
 212         { "kbytestotal",  lprocfs_rd_kbytestotal, 0, 0 },
 213         { "kbytesfree",   lprocfs_rd_kbytesfree,  0, 0 },
 214         { "kbytesavail",  lprocfs_rd_kbytesavail, 0, 0 },
 215         { "fstype",       lprocfs_rd_fstype,      0, 0 },
 216         { "filestotal",   lprocfs_rd_filestotal,  0, 0 },
 217         { "filesfree",    lprocfs_rd_filesfree,   0, 0 },
 218         { "filesopen",    lprocfs_rd_filesopen,   0, 0 },
 219         { "mntdev",       lprocfs_mds_rd_mntdev,  0, 0 },
 220         { "last_fid",     lprocfs_rd_last_fid,    0, 0 },
 221         { "group",        lprocfs_rd_group,       0, 0 },
 222         { "recovery_status",  lprocfs_obd_rd_recovery_status, 0, 0 },
 223         { "evict_client", 0,  lprocfs_mds_wr_evict_client, 0 },
 224         { "config_update", 0, lprocfs_mds_wr_config_update, 0 },
 225         { "num_exports",      lprocfs_rd_num_exports, 0, 0 },
 226         { "capa",             lprocfs_rd_capa,
 227                               lprocfs_wr_capa, 0 },
 228         { "capa_timeout",     lprocfs_rd_capa_timeout,
 229                               lprocfs_wr_capa_timeout, 0 },
 230         { "capa_key_timeout", lprocfs_rd_capa_key_timeout,
 231                               lprocfs_wr_capa_key_timeout, 0 },
 232         { 0 }
 233 };
 234
 235 /*
 236  * LSD proc entry handlers
 237  */
 238 static int lprocfs_wr_lsd_downcall(struct file *file, const char *buffer,
 239                                    unsigned long count, void *data)
 240 {
 241         struct upcall_cache *cache = __mds_get_global_lsd_cache();
 242         struct lsd_downcall_args param;
 243         gid_t   gids_local[NGROUPS_SMALL];
 244         gid_t  *gids = NULL;
 245
 246         if (count != sizeof(param)) {
 247                 CERROR("invalid data size %lu\n", count);
 248                 goto do_err_downcall;
 249         }
 250         if (copy_from_user(&param, buffer, count)) {
 251                 CERROR("broken downcall\n");
 252                 goto do_err_downcall;
 253         }
 254
 255         if (param.err) {
 256                 CERROR("LSD downcall indicate error %d\n", param.err);
 257                 goto do_downcall;
 258         }
 259
 260         if (param.ngroups > NGROUPS_MAX) {
 261                 CERROR("%d groups too big\n", param.ngroups);
 262                 goto do_err_downcall;
 263         }
 264
 265         if (param.ngroups <= NGROUPS_SMALL)
 266                 gids = gids_local;
 267         else {
 268                 OBD_ALLOC(gids, param.ngroups * sizeof(gid_t));
 269                 if (!gids) {
 270                         CERROR("fail to alloc memory for %d gids\n",
 271                                 param.ngroups);
 272                         goto do_err_downcall;
 273                 }
 274         }
 275         if (copy_from_user(gids, param.groups,
 276                            param.ngroups * sizeof(gid_t))) {
 277                 CERROR("broken downcall\n");
 278                 goto do_err_downcall;
 279         }
 280
 281         param.groups = gids;
 282
 283 do_downcall:
 284         upcall_cache_downcall(cache, (__u64) param.uid, &param);
 285
 286         if (gids && gids != gids_local)
 287                 OBD_FREE(gids, param.ngroups * sizeof(gid_t));
 288         return count;
 289
 290 do_err_downcall:
 291         param.err = -EINVAL;
 292         goto do_downcall;
 293 }
 294
 295 static int lprocfs_rd_lsd_expire(char *page, char **start, off_t off, int count,
 296                                  int *eof, void *data)
 297 {
 298         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 299
 300         *eof = 1;
 301         return snprintf(page, count, "%lu\n", cache->uc_entry_expire);
 302 }
 303 static int lprocfs_wr_lsd_expire(struct file *file, const char *buffer,
 304                                  unsigned long count, void *data)
 305 {
 306         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 307         char buf[32];
 308
 309         if (copy_from_user(buf, buffer, min(count, 32UL)))
 310                 return count;
 311         buf[31] = 0;
 312         sscanf(buf, "%lu", &cache->uc_entry_expire);
 313         return count;
 314 }
 315
 316 static int lprocfs_rd_lsd_ac_expire(char *page, char **start, off_t off,
 317                                     int count, int *eof, void *data)
 318 {
 319         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 320
 321         *eof = 1;
 322         return snprintf(page, count, "%lu\n", cache->uc_acquire_expire);
 323 }
 324 static int lprocfs_wr_lsd_ac_expire(struct file *file, const char *buffer,
 325                                     unsigned long count, void *data)
 326 {
 327         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 328         char buf[32];
 329
 330         if (copy_from_user(buf, buffer, min(count, 32UL)))
 331                 return count;
 332         buf[31] = 0;
 333         sscanf(buf, "%lu", &cache->uc_acquire_expire);
 334         return count;
 335 }
 336
 337 static int lprocfs_rd_lsd_upcall(char *page, char **start, off_t off, int count,
 338                                  int *eof, void *data)
 339 {
 340         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 341
 342         *eof = 1;
 343         return snprintf(page, count, "%s\n", cache->uc_upcall);
 344 }
 345 static int lprocfs_wr_lsd_upcall(struct file *file, const char *buffer,
 346                                  unsigned long count, void *data)
 347 {
 348         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 349
 350         if (count < UC_CACHE_UPCALL_MAXPATH) {
 351                 sscanf(buffer, "%1024s", cache->uc_upcall);
 352                 cache->uc_upcall[UC_CACHE_UPCALL_MAXPATH - 1] = 0;
 353         }
 354         return count;
 355 }
 356
 357 extern void lgss_svc_cache_flush(__u32 uid);
 358 static int lprocfs_wr_lsd_flush(struct file *file, const char *buffer,
 359                                 unsigned long count, void *data)
 360 {
 361         char buf[32];
 362         __u32 uid;
 363
 364         if (copy_from_user(buf, buffer, min(count, 32UL)))
 365                 return count;
 366         buf[31] = 0;
 367         sscanf(buf, "%d", &uid);
 368
 369         mds_flush_lsd(uid);
 370 #ifdef ENABLE_GSS
 371         lgss_svc_cache_flush(uid);
 372 #endif
 373         return count;
 374 }
 375
 376 /*
 377  * remote acl proc handling
 378  */
 379 static int lprocfs_rd_lacl_upcall(char *page, char **start, off_t off,
 380                                   int count, int *eof, void *data)
 381 {
 382         struct upcall_cache *cache = __mds_get_global_rmtacl_upcall_cache();
 383
 384         *eof = 1;
 385         return snprintf(page, count, "%s\n", cache->uc_upcall);
 386 }
 387
 388 static int lprocfs_wr_lacl_upcall(struct file *file, const char *buffer,
 389                                   unsigned long count, void *data)
 390 {
 391         struct upcall_cache *cache = __mds_get_global_rmtacl_upcall_cache();
 392
 393         if (count < UC_CACHE_UPCALL_MAXPATH) {
 394                 sscanf(buffer, "%1024s", cache->uc_upcall);
 395                 cache->uc_upcall[UC_CACHE_UPCALL_MAXPATH - 1] = 0;
 396         }
 397         return count;
 398 }
 399
 400 static int lprocfs_wr_lacl_downcall(struct file *file, const char *buffer,
 401                                     unsigned long count, void *data)
 402 {
 403         struct upcall_cache *cache = __mds_get_global_rmtacl_upcall_cache();
 404         struct rmtacl_downcall_args param;
 405
 406         if (count != sizeof(param)) {
 407                 CERROR("invalid data size %lu\n", count);
 408                 goto do_err_downcall;
 409         }
 410         if (copy_from_user(&param, buffer, count)) {
 411                 CERROR("broken downcall\n");
 412                 goto do_err_downcall;
 413         }
 414
 415 do_downcall:
 416         upcall_cache_downcall(cache, param.key, &param);
 417         return count;
 418
 419 do_err_downcall:
 420         memset(&param, 0, sizeof(param));
 421         param.status = -EINVAL;
 422         goto do_downcall;
 423 }
 424
 425 struct lprocfs_vars lprocfs_mds_module_vars[] = {
 426         { "num_refs",                   lprocfs_rd_numrefs, 0, 0 },
 427         /* LSD stuff */
 428         { "lsd_expire_interval",        lprocfs_rd_lsd_expire,
 429                                         lprocfs_wr_lsd_expire, 0},
 430         { "lsd_acquire_expire",         lprocfs_rd_lsd_ac_expire,
 431                                         lprocfs_wr_lsd_ac_expire, 0},
 432         { "lsd_upcall",                 lprocfs_rd_lsd_upcall,
 433                                         lprocfs_wr_lsd_upcall, 0},
 434         { "lsd_flush",                  0, lprocfs_wr_lsd_flush, 0},
 435         { "lsd_downcall",               0, lprocfs_wr_lsd_downcall, 0},
 436         /* remote acl */
 437         { "lacl_upcall",                lprocfs_rd_lacl_upcall,
 438                                         lprocfs_wr_lacl_upcall, 0},
 439         { "lacl_downcall",              0, lprocfs_wr_lacl_downcall, 0},
 440         { 0 }
 441 };
 442
 443 struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
 444         { "uuid",         lprocfs_rd_uuid,        0, 0 },
 445         { 0 }
 446 };
 447
 448 struct lprocfs_vars lprocfs_mdt_module_vars[] = {
 449         { "num_refs",     lprocfs_rd_numrefs,     0, 0 },
 450         { 0 }
 451 };
 452 #endif /* LPROCFS */
 453
 454 struct lprocfs_static_vars lprocfs_array_vars[] = { {lprocfs_mds_module_vars,
 455                                                      lprocfs_mds_obd_vars},
 456                                                     {lprocfs_mdt_module_vars,
 457                                                      lprocfs_mdt_obd_vars}};
 458
 459 LPROCFS_INIT_MULTI_VARS(lprocfs_array_vars,
 460                         (sizeof(lprocfs_array_vars) /
 461                          sizeof(struct lprocfs_static_vars)))