1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
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.
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.
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.
22 #define DEBUG_SUBSYSTEM S_CLASS
24 #include <linux/version.h>
25 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
26 #include <asm/statfs.h>
28 #include <linux/obd.h>
29 #include <linux/obd_class.h>
30 #include <linux/lprocfs_status.h>
31 #include "mds_internal.h"
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} };
42 static int lprocfs_mds_rd_mntdev(char *page, char **start, off_t off,
43 int count, int *eof, void *data)
45 struct obd_device* obd = (struct obd_device *)data;
48 LASSERT(obd->u.mds.mds_vfsmnt->mnt_devname);
51 return snprintf(page, count, "%s\n",
52 obd->u.mds.mds_vfsmnt->mnt_devname);
55 static int lprocfs_mds_wr_evict_client(struct file *file, const char *buffer,
56 unsigned long count, void *data)
58 struct obd_device *obd = data;
59 struct obd_export *doomed_exp = NULL;
60 struct obd_uuid doomed;
62 char tmpbuf[sizeof(doomed)];
64 sscanf(buffer, "%40s", tmpbuf);
65 obd_str2uuid(&doomed, tmpbuf);
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);
76 spin_unlock(&obd->obd_dev_lock);
78 if (doomed_exp == NULL) {
79 CERROR("can't disconnect %s: no export found\n",
82 CERROR("evicting %s at adminstrative request\n",
84 ptlrpc_fail_export(doomed_exp);
85 class_export_put(doomed_exp);
90 static int lprocfs_mds_wr_config_update(struct file *file, const char *buffer,
91 unsigned long count, void *data)
93 struct obd_device *obd = data;
96 RETURN(mds_dt_update_config(obd, 0));
99 static int lprocfs_rd_filesopen(char *page, char **start, off_t off,
100 int count, int *eof, void *data)
102 struct obd_device *obd = data;
103 LASSERT(obd != NULL);
106 return snprintf(page, count, "%d\n",
107 atomic_read(&obd->u.mds.mds_open_count));
110 static int lprocfs_rd_last_fid(char *page, char **start, off_t off,
111 int count, int *eof, void *data)
113 struct obd_device *obd = (struct obd_device *)data;
114 struct mds_obd *mds = &obd->u.mds;
117 spin_lock(&mds->mds_last_fid_lock);
118 last_fid = mds->mds_last_fid;
119 spin_unlock(&mds->mds_last_fid_lock);
122 return snprintf(page, count, LPD64"\n", last_fid);
125 static int lprocfs_rd_group(char *page, char **start, off_t off,
126 int count, int *eof, void *data)
128 struct obd_device *obd = (struct obd_device *)data;
129 struct mds_obd *mds = &obd->u.mds;
132 return snprintf(page, count, "%lu\n",
133 (unsigned long)mds->mds_num);
136 struct lprocfs_vars lprocfs_mds_obd_vars[] = {
137 { "uuid", lprocfs_rd_uuid, 0, 0 },
138 { "blocksize", lprocfs_rd_blksize, 0, 0 },
139 { "kbytestotal", lprocfs_rd_kbytestotal, 0, 0 },
140 { "kbytesfree", lprocfs_rd_kbytesfree, 0, 0 },
141 { "kbytesavail", lprocfs_rd_kbytesavail, 0, 0 },
142 { "fstype", lprocfs_rd_fstype, 0, 0 },
143 { "filestotal", lprocfs_rd_filestotal, 0, 0 },
144 { "filesfree", lprocfs_rd_filesfree, 0, 0 },
145 { "filesopen", lprocfs_rd_filesopen, 0, 0 },
146 { "mntdev", lprocfs_mds_rd_mntdev, 0, 0 },
147 { "last_fid", lprocfs_rd_last_fid, 0, 0 },
148 { "group", lprocfs_rd_group, 0, 0 },
149 { "recovery_status", lprocfs_obd_rd_recovery_status, 0, 0 },
150 { "evict_client", 0, lprocfs_mds_wr_evict_client, 0 },
151 { "config_update", 0, lprocfs_mds_wr_config_update, 0 },
152 { "num_exports", lprocfs_rd_num_exports, 0, 0 },
157 * LSD proc entry handlers
159 static int lprocfs_wr_lsd_downcall(struct file *file, const char *buffer,
160 unsigned long count, void *data)
162 struct upcall_cache *cache = __mds_get_global_lsd_cache();
163 struct lsd_downcall_args param;
164 gid_t gids_local[NGROUPS_SMALL];
167 if (count != sizeof(param)) {
168 CERROR("invalid data size %lu\n", count);
169 goto do_err_downcall;
171 if (copy_from_user(¶m, buffer, count)) {
172 CERROR("broken downcall\n");
173 goto do_err_downcall;
177 CERROR("LSD downcall indicate error %d\n", param.err);
181 if (param.ngroups > NGROUPS_MAX) {
182 CERROR("%d groups too big\n", param.ngroups);
183 goto do_err_downcall;
186 if (param.ngroups <= NGROUPS_SMALL)
189 OBD_ALLOC(gids, param.ngroups * sizeof(gid_t));
191 CERROR("fail to alloc memory for %d gids\n",
193 goto do_err_downcall;
196 if (copy_from_user(gids, param.groups,
197 param.ngroups * sizeof(gid_t))) {
198 CERROR("broken downcall\n");
199 goto do_err_downcall;
205 upcall_cache_downcall(cache, (__u64) param.uid, ¶m);
207 if (gids && gids != gids_local)
208 OBD_FREE(gids, param.ngroups * sizeof(gid_t));
216 static int lprocfs_rd_lsd_expire(char *page, char **start, off_t off, int count,
217 int *eof, void *data)
219 struct upcall_cache *cache= __mds_get_global_lsd_cache();
222 return snprintf(page, count, "%lu\n", cache->uc_entry_expire);
224 static int lprocfs_wr_lsd_expire(struct file *file, const char *buffer,
225 unsigned long count, void *data)
227 struct upcall_cache *cache= __mds_get_global_lsd_cache();
230 if (copy_from_user(buf, buffer, min(count, 32UL)))
233 sscanf(buf, "%lu", &cache->uc_entry_expire);
237 static int lprocfs_rd_lsd_ac_expire(char *page, char **start, off_t off,
238 int count, int *eof, void *data)
240 struct upcall_cache *cache= __mds_get_global_lsd_cache();
243 return snprintf(page, count, "%lu\n", cache->uc_acquire_expire);
245 static int lprocfs_wr_lsd_ac_expire(struct file *file, const char *buffer,
246 unsigned long count, void *data)
248 struct upcall_cache *cache= __mds_get_global_lsd_cache();
251 if (copy_from_user(buf, buffer, min(count, 32UL)))
254 sscanf(buf, "%lu", &cache->uc_acquire_expire);
258 static int lprocfs_rd_lsd_upcall(char *page, char **start, off_t off, int count,
259 int *eof, void *data)
261 struct upcall_cache *cache= __mds_get_global_lsd_cache();
264 return snprintf(page, count, "%s\n", cache->uc_upcall);
266 static int lprocfs_wr_lsd_upcall(struct file *file, const char *buffer,
267 unsigned long count, void *data)
269 struct upcall_cache *cache= __mds_get_global_lsd_cache();
271 if (count < UC_CACHE_UPCALL_MAXPATH) {
272 sscanf(buffer, "%1024s", cache->uc_upcall);
273 cache->uc_upcall[UC_CACHE_UPCALL_MAXPATH - 1] = 0;
278 extern void lgss_svc_cache_flush(__u32 uid);
279 static int lprocfs_wr_lsd_flush(struct file *file, const char *buffer,
280 unsigned long count, void *data)
285 if (copy_from_user(buf, buffer, min(count, 32UL)))
288 sscanf(buf, "%d", &uid);
292 lgss_svc_cache_flush(uid);
297 struct lprocfs_vars lprocfs_mds_module_vars[] = {
298 { "num_refs", lprocfs_rd_numrefs, 0, 0 },
300 { "lsd_expire_interval", lprocfs_rd_lsd_expire,
301 lprocfs_wr_lsd_expire, 0},
302 { "lsd_acquire_expire", lprocfs_rd_lsd_ac_expire,
303 lprocfs_wr_lsd_ac_expire, 0},
304 { "lsd_upcall", lprocfs_rd_lsd_upcall,
305 lprocfs_wr_lsd_upcall, 0},
306 { "lsd_flush", 0, lprocfs_wr_lsd_flush, 0},
307 { "lsd_downcall", 0, lprocfs_wr_lsd_downcall, 0},
311 struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
312 { "uuid", lprocfs_rd_uuid, 0, 0 },
316 struct lprocfs_vars lprocfs_mdt_module_vars[] = {
317 { "num_refs", lprocfs_rd_numrefs, 0, 0 },
322 struct lprocfs_static_vars lprocfs_array_vars[] = { {lprocfs_mds_module_vars,
323 lprocfs_mds_obd_vars},
324 {lprocfs_mdt_module_vars,
325 lprocfs_mdt_obd_vars}};
327 LPROCFS_INIT_MULTI_VARS(lprocfs_array_vars,
328 (sizeof(lprocfs_array_vars) /
329 sizeof(struct lprocfs_static_vars)))