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         RETURN(mds_dt_update_config(obd, 0));
  97 }
  98
  99 static int lprocfs_rd_filesopen(char *page, char **start, off_t off,
 100                                 int count, int *eof, void *data)
 101 {
 102         struct obd_device *obd = data;
 103         LASSERT(obd != NULL);
 104         *eof = 1;
 105
 106         return snprintf(page, count, "%d\n",
 107                         atomic_read(&obd->u.mds.mds_open_count));
 108 }
 109
 110 static int lprocfs_rd_last_fid(char *page, char **start, off_t off,
 111                                int count, int *eof, void *data)
 112 {
 113         struct obd_device *obd = (struct obd_device *)data;
 114         struct mds_obd *mds = &obd->u.mds;
 115         __u64 last_fid;
 116
 117         spin_lock(&mds->mds_last_fid_lock);
 118         last_fid = mds->mds_last_fid;
 119         spin_unlock(&mds->mds_last_fid_lock);
 120
 121         *eof = 1;
 122         return snprintf(page, count, LPD64"\n", last_fid);
 123 }
 124
 125 static int lprocfs_rd_group(char *page, char **start, off_t off,
 126                             int count, int *eof, void *data)
 127 {
 128         struct obd_device *obd = (struct obd_device *)data;
 129         struct mds_obd *mds = &obd->u.mds;
 130
 131         *eof = 1;
 132         return snprintf(page, count, "%lu\n",
 133                         (unsigned long)mds->mds_num);
 134 }
 135
 136 static int lprocfs_rd_capa(char *page, char **start, off_t off,
 137                            int count, int *eof, void *data)
 138 {
 139         struct obd_device *obd = (struct obd_device *)data;
 140         LASSERT(obd != NULL);
 141
 142         return snprintf(page, count, "%d\n",
 143                         obd->u.mds.mds_capa_stat);
 144 }
 145
 146 static int lprocfs_wr_capa(struct file *file, const char *buffer,
 147                            unsigned long count, void *data)
 148 {
 149         struct obd_device *obd = data;
 150         int val, rc;
 151
 152         rc = lprocfs_write_helper(buffer, count, &val);
 153         if (rc)
 154                 return rc;
 155
 156         mds_update_capa_stat(obd, val);
 157         return count;
 158 }
 159
 160 static int lprocfs_rd_capa_timeout(char *page, char **start, off_t off,
 161                                        int count, int *eof, void *data)
 162 {
 163         struct obd_device *obd = (struct obd_device *)data;
 164         LASSERT(obd != NULL);
 165
 166         return snprintf(page, count, "%lu\n",
 167                         obd->u.mds.mds_capa_timeout);
 168 }
 169
 170 static int lprocfs_wr_capa_timeout(struct file *file, const char *buffer,
 171                                        unsigned long count, void *data)
 172 {
 173         struct obd_device *obd = data;
 174         int val, rc;
 175
 176         rc = lprocfs_write_helper(buffer, count, &val);
 177         if (rc)
 178                 return rc;
 179
 180         mds_update_capa_timeout(obd, val);
 181         return count;
 182 }
 183
 184 static int lprocfs_rd_capa_key_timeout(char *page, char **start, off_t off,
 185                                            int count, int *eof, void *data)
 186 {
 187         struct obd_device *obd = (struct obd_device *)data;
 188         LASSERT(obd != NULL);
 189
 190         return snprintf(page, count, "%lu\n",
 191                         obd->u.mds.mds_capa_key_timeout);
 192 }
 193
 194 static int lprocfs_wr_capa_key_timeout(struct file *file, const char *buffer,
 195                                            unsigned long count, void *data)
 196 {
 197         struct obd_device *obd = data;
 198         int val, rc;
 199
 200         rc = lprocfs_write_helper(buffer, count, &val);
 201         if (rc)
 202                 return rc;
 203
 204         rc = mds_update_capa_key_timeout(obd, val);
 205         return rc ?: count;
 206 }
 207
 208 struct lprocfs_vars lprocfs_mds_obd_vars[] = {
 209         { "uuid",         lprocfs_rd_uuid,        0, 0 },
 210         { "blocksize",    lprocfs_rd_blksize,     0, 0 },
 211         { "kbytestotal",  lprocfs_rd_kbytestotal, 0, 0 },
 212         { "kbytesfree",   lprocfs_rd_kbytesfree,  0, 0 },
 213         { "kbytesavail",  lprocfs_rd_kbytesavail, 0, 0 },
 214         { "fstype",       lprocfs_rd_fstype,      0, 0 },
 215         { "filestotal",   lprocfs_rd_filestotal,  0, 0 },
 216         { "filesfree",    lprocfs_rd_filesfree,   0, 0 },
 217         { "filesopen",    lprocfs_rd_filesopen,   0, 0 },
 218         { "mntdev",       lprocfs_mds_rd_mntdev,  0, 0 },
 219         { "last_fid",     lprocfs_rd_last_fid,    0, 0 },
 220         { "group",        lprocfs_rd_group,       0, 0 },
 221         { "recovery_status",  lprocfs_obd_rd_recovery_status, 0, 0 },
 222         { "evict_client", 0,  lprocfs_mds_wr_evict_client, 0 },
 223         { "config_update", 0, lprocfs_mds_wr_config_update, 0 },
 224         { "num_exports",      lprocfs_rd_num_exports, 0, 0 },
 225         { "capa",             lprocfs_rd_capa,
 226                               lprocfs_wr_capa, 0 },
 227         { "capa_timeout",     lprocfs_rd_capa_timeout,
 228                               lprocfs_wr_capa_timeout, 0 },
 229         { "capa_key_timeout", lprocfs_rd_capa_key_timeout,
 230                               lprocfs_wr_capa_key_timeout, 0 },
 231         { 0 }
 232 };
 233
 234 /*
 235  * LSD proc entry handlers
 236  */
 237 static int lprocfs_wr_lsd_downcall(struct file *file, const char *buffer,
 238                                    unsigned long count, void *data)
 239 {
 240         struct upcall_cache *cache = __mds_get_global_lsd_cache();
 241         struct lsd_downcall_args param;
 242         gid_t   gids_local[NGROUPS_SMALL];
 243         gid_t  *gids = NULL;
 244
 245         if (count != sizeof(param)) {
 246                 CERROR("invalid data size %lu\n", count);
 247                 goto do_err_downcall;
 248         }
 249         if (copy_from_user(&param, buffer, count)) {
 250                 CERROR("broken downcall\n");
 251                 goto do_err_downcall;
 252         }
 253
 254         if (param.err) {
 255                 CERROR("LSD downcall indicate error %d\n", param.err);
 256                 goto do_downcall;
 257         }
 258
 259         if (param.ngroups > NGROUPS_MAX) {
 260                 CERROR("%d groups too big\n", param.ngroups);
 261                 goto do_err_downcall;
 262         }
 263
 264         if (param.ngroups <= NGROUPS_SMALL)
 265                 gids = gids_local;
 266         else {
 267                 OBD_ALLOC(gids, param.ngroups * sizeof(gid_t));
 268                 if (!gids) {
 269                         CERROR("fail to alloc memory for %d gids\n",
 270                                 param.ngroups);
 271                         goto do_err_downcall;
 272                 }
 273         }
 274         if (copy_from_user(gids, param.groups,
 275                            param.ngroups * sizeof(gid_t))) {
 276                 CERROR("broken downcall\n");
 277                 goto do_err_downcall;
 278         }
 279
 280         param.groups = gids;
 281
 282 do_downcall:
 283         upcall_cache_downcall(cache, (__u64) param.uid, &param);
 284
 285         if (gids && gids != gids_local)
 286                 OBD_FREE(gids, param.ngroups * sizeof(gid_t));
 287         return count;
 288
 289 do_err_downcall:
 290         param.err = -EINVAL;
 291         goto do_downcall;
 292 }
 293
 294 static int lprocfs_rd_lsd_expire(char *page, char **start, off_t off, int count,
 295                                  int *eof, void *data)
 296 {
 297         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 298
 299         *eof = 1;
 300         return snprintf(page, count, "%lu\n", cache->uc_entry_expire);
 301 }
 302 static int lprocfs_wr_lsd_expire(struct file *file, const char *buffer,
 303                                  unsigned long count, void *data)
 304 {
 305         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 306         char buf[32];
 307
 308         if (copy_from_user(buf, buffer, min(count, 32UL)))
 309                 return count;
 310         buf[31] = 0;
 311         sscanf(buf, "%lu", &cache->uc_entry_expire);
 312         return count;
 313 }
 314
 315 static int lprocfs_rd_lsd_ac_expire(char *page, char **start, off_t off,
 316                                     int count, int *eof, void *data)
 317 {
 318         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 319
 320         *eof = 1;
 321         return snprintf(page, count, "%lu\n", cache->uc_acquire_expire);
 322 }
 323 static int lprocfs_wr_lsd_ac_expire(struct file *file, const char *buffer,
 324                                     unsigned long count, void *data)
 325 {
 326         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 327         char buf[32];
 328
 329         if (copy_from_user(buf, buffer, min(count, 32UL)))
 330                 return count;
 331         buf[31] = 0;
 332         sscanf(buf, "%lu", &cache->uc_acquire_expire);
 333         return count;
 334 }
 335
 336 static int lprocfs_rd_lsd_upcall(char *page, char **start, off_t off, int count,
 337                                  int *eof, void *data)
 338 {
 339         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 340
 341         *eof = 1;
 342         return snprintf(page, count, "%s\n", cache->uc_upcall);
 343 }
 344 static int lprocfs_wr_lsd_upcall(struct file *file, const char *buffer,
 345                                  unsigned long count, void *data)
 346 {
 347         struct upcall_cache *cache= __mds_get_global_lsd_cache();
 348
 349         if (count < UC_CACHE_UPCALL_MAXPATH) {
 350                 sscanf(buffer, "%1024s", cache->uc_upcall);
 351                 cache->uc_upcall[UC_CACHE_UPCALL_MAXPATH - 1] = 0;
 352         }
 353         return count;
 354 }
 355
 356 extern void lgss_svc_cache_flush(__u32 uid);
 357 static int lprocfs_wr_lsd_flush(struct file *file, const char *buffer,
 358                                 unsigned long count, void *data)
 359 {
 360         char buf[32];
 361         __u32 uid;
 362
 363         if (copy_from_user(buf, buffer, min(count, 32UL)))
 364                 return count;
 365         buf[31] = 0;
 366         sscanf(buf, "%d", &uid);
 367
 368         mds_flush_lsd(uid);
 369 #ifdef ENABLE_GSS
 370         lgss_svc_cache_flush(uid);
 371 #endif
 372         return count;
 373 }
 374
 375 /*
 376  * remote acl proc handling
 377  */
 378 static int lprocfs_rd_lacl_upcall(char *page, char **start, off_t off,
 379                                   int count, int *eof, void *data)
 380 {
 381         struct upcall_cache *cache = __mds_get_global_rmtacl_upcall_cache();
 382
 383         *eof = 1;
 384         return snprintf(page, count, "%s\n", cache->uc_upcall);
 385 }
 386
 387 static int lprocfs_wr_lacl_upcall(struct file *file, const char *buffer,
 388                                   unsigned long count, void *data)
 389 {
 390         struct upcall_cache *cache = __mds_get_global_rmtacl_upcall_cache();
 391
 392         if (count < UC_CACHE_UPCALL_MAXPATH) {
 393                 sscanf(buffer, "%1024s", cache->uc_upcall);
 394                 cache->uc_upcall[UC_CACHE_UPCALL_MAXPATH - 1] = 0;
 395         }
 396         return count;
 397 }
 398
 399 static int lprocfs_wr_lacl_downcall(struct file *file, const char *buffer,
 400                                     unsigned long count, void *data)
 401 {
 402         struct upcall_cache *cache = __mds_get_global_rmtacl_upcall_cache();
 403         struct rmtacl_downcall_args param;
 404
 405         if (count != sizeof(param)) {
 406                 CERROR("invalid data size %lu\n", count);
 407                 goto do_err_downcall;
 408         }
 409         if (copy_from_user(&param, buffer, count)) {
 410                 CERROR("broken downcall\n");
 411                 goto do_err_downcall;
 412         }
 413
 414 do_downcall:
 415         upcall_cache_downcall(cache, param.key, &param);
 416         return count;
 417
 418 do_err_downcall:
 419         memset(&param, 0, sizeof(param));
 420         param.status = -EINVAL;
 421         goto do_downcall;
 422 }
 423
 424 struct lprocfs_vars lprocfs_mds_module_vars[] = {
 425         { "num_refs",                   lprocfs_rd_numrefs, 0, 0 },
 426         /* LSD stuff */
 427         { "lsd_expire_interval",        lprocfs_rd_lsd_expire,
 428                                         lprocfs_wr_lsd_expire, 0},
 429         { "lsd_acquire_expire",         lprocfs_rd_lsd_ac_expire,
 430                                         lprocfs_wr_lsd_ac_expire, 0},
 431         { "lsd_upcall",                 lprocfs_rd_lsd_upcall,
 432                                         lprocfs_wr_lsd_upcall, 0},
 433         { "lsd_flush",                  0, lprocfs_wr_lsd_flush, 0},
 434         { "lsd_downcall",               0, lprocfs_wr_lsd_downcall, 0},
 435         /* remote acl */
 436         { "lacl_upcall",                lprocfs_rd_lacl_upcall,
 437                                         lprocfs_wr_lacl_upcall, 0},
 438         { "lacl_downcall",              0, lprocfs_wr_lacl_downcall, 0},
 439         { 0 }
 440 };
 441
 442 struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
 443         { "uuid",         lprocfs_rd_uuid,        0, 0 },
 444         { 0 }
 445 };
 446
 447 struct lprocfs_vars lprocfs_mdt_module_vars[] = {
 448         { "num_refs",     lprocfs_rd_numrefs,     0, 0 },
 449         { 0 }
 450 };
 451 #endif /* LPROCFS */
 452
 453 struct lprocfs_static_vars lprocfs_array_vars[] = { {lprocfs_mds_module_vars,
 454                                                      lprocfs_mds_obd_vars},
 455                                                     {lprocfs_mdt_module_vars,
 456                                                      lprocfs_mdt_obd_vars}};
 457
 458 LPROCFS_INIT_MULTI_VARS(lprocfs_array_vars,
 459                         (sizeof(lprocfs_array_vars) /
 460                          sizeof(struct lprocfs_static_vars)))