blob: 0dc34621f6a6ecf73acddc3c82d0a90c731ff601 [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Steven Whitehouse3a8a9a12006-05-18 15:09:15 -04003 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +00004 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -04007 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +00008 */
9
10#include <linux/sched.h>
11#include <linux/slab.h>
12#include <linux/spinlock.h>
13#include <linux/completion.h>
14#include <linux/buffer_head.h>
15#include <linux/module.h>
16#include <linux/kobject.h>
David Teiglandb3b94fa2006-01-16 16:50:04 +000017#include <asm/uaccess.h>
Steven Whitehousef057f6c2009-01-12 10:43:39 +000018#include <linux/gfs2_ondisk.h>
Steven Whitehouse31e54b02009-08-13 12:18:08 +010019#include <linux/genhd.h>
David Teiglandb3b94fa2006-01-16 16:50:04 +000020
21#include "gfs2.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050022#include "incore.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000023#include "sys.h"
24#include "super.h"
25#include "glock.h"
26#include "quota.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050027#include "util.h"
Steven Whitehouse64d576b2009-02-12 13:31:58 +000028#include "glops.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000029
Steven Whitehouse48c2b612009-05-13 14:49:48 +010030struct gfs2_attr {
31 struct attribute attr;
32 ssize_t (*show)(struct gfs2_sbd *, char *);
33 ssize_t (*store)(struct gfs2_sbd *, const char *, size_t);
34};
35
36static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr,
37 char *buf)
38{
39 struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
40 struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
41 return a->show ? a->show(sdp, buf) : 0;
42}
43
44static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr,
45 const char *buf, size_t len)
46{
47 struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
48 struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
49 return a->store ? a->store(sdp, buf, len) : len;
50}
51
52static struct sysfs_ops gfs2_attr_ops = {
53 .show = gfs2_attr_show,
54 .store = gfs2_attr_store,
55};
56
57
58static struct kset *gfs2_kset;
59
David Teiglandb3b94fa2006-01-16 16:50:04 +000060static ssize_t id_show(struct gfs2_sbd *sdp, char *buf)
61{
Bob Petersonc7227e462007-11-02 09:37:15 -050062 return snprintf(buf, PAGE_SIZE, "%u:%u\n",
63 MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev));
David Teiglandb3b94fa2006-01-16 16:50:04 +000064}
65
66static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf)
67{
David Teigland3204a6c2006-09-06 16:57:06 -050068 return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname);
David Teiglandb3b94fa2006-01-16 16:50:04 +000069}
70
Steven Whitehouse02e3cc72009-02-10 13:48:30 +000071static int gfs2_uuid_valid(const u8 *uuid)
72{
73 int i;
74
75 for (i = 0; i < 16; i++) {
76 if (uuid[i])
77 return 1;
78 }
79 return 0;
80}
81
82static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf)
83{
84 const u8 *uuid = sdp->sd_sb.sb_uuid;
85 buf[0] = '\0';
86 if (!gfs2_uuid_valid(uuid))
87 return 0;
Joe Perchesf0b34ae2009-12-14 18:01:13 -080088 return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid);
Steven Whitehouse02e3cc72009-02-10 13:48:30 +000089}
90
David Teiglandb3b94fa2006-01-16 16:50:04 +000091static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
92{
93 unsigned int count;
94
Steven Whitehousef55ab262006-02-21 12:51:39 +000095 mutex_lock(&sdp->sd_freeze_lock);
David Teiglandb3b94fa2006-01-16 16:50:04 +000096 count = sdp->sd_freeze_count;
Steven Whitehousef55ab262006-02-21 12:51:39 +000097 mutex_unlock(&sdp->sd_freeze_lock);
David Teiglandb3b94fa2006-01-16 16:50:04 +000098
David Teigland3204a6c2006-09-06 16:57:06 -050099 return snprintf(buf, PAGE_SIZE, "%u\n", count);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000100}
101
102static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
103{
104 ssize_t ret = len;
105 int error = 0;
106 int n = simple_strtol(buf, NULL, 0);
107
108 if (!capable(CAP_SYS_ADMIN))
109 return -EACCES;
110
111 switch (n) {
112 case 0:
113 gfs2_unfreeze_fs(sdp);
114 break;
115 case 1:
116 error = gfs2_freeze_fs(sdp);
117 break;
118 default:
119 ret = -EINVAL;
120 }
121
122 if (error)
123 fs_warn(sdp, "freeze %d error %d", n, error);
124
125 return ret;
126}
127
128static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf)
129{
130 unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags);
David Teigland3204a6c2006-09-06 16:57:06 -0500131 return snprintf(buf, PAGE_SIZE, "%u\n", b);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000132}
133
134static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
135{
136 if (!capable(CAP_SYS_ADMIN))
137 return -EACCES;
138
139 if (simple_strtol(buf, NULL, 0) != 1)
140 return -EINVAL;
141
142 gfs2_lm_withdraw(sdp,
143 "GFS2: fsid=%s: withdrawing from cluster at user's request\n",
144 sdp->sd_fsname);
145 return len;
146}
147
148static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf,
149 size_t len)
150{
151 if (!capable(CAP_SYS_ADMIN))
152 return -EACCES;
153
154 if (simple_strtol(buf, NULL, 0) != 1)
155 return -EINVAL;
156
Steven Whitehouse8c42d632009-09-11 14:36:44 +0100157 gfs2_statfs_sync(sdp->sd_vfs, 0);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000158 return len;
159}
160
David Teiglandb3b94fa2006-01-16 16:50:04 +0000161static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
162 size_t len)
163{
164 if (!capable(CAP_SYS_ADMIN))
165 return -EACCES;
166
167 if (simple_strtol(buf, NULL, 0) != 1)
168 return -EINVAL;
169
Steven Whitehouse8c42d632009-09-11 14:36:44 +0100170 gfs2_quota_sync(sdp->sd_vfs, 0);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000171 return len;
172}
173
174static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
175 size_t len)
176{
Steven Whitehouseea762332009-09-15 16:20:30 +0100177 int error;
Steven Whitehousecd915492006-09-04 12:49:07 -0400178 u32 id;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000179
180 if (!capable(CAP_SYS_ADMIN))
181 return -EACCES;
182
183 id = simple_strtoul(buf, NULL, 0);
184
Steven Whitehouseea762332009-09-15 16:20:30 +0100185 error = gfs2_quota_refresh(sdp, 1, id);
186 return error ? error : len;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000187}
188
189static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
190 size_t len)
191{
Steven Whitehouseea762332009-09-15 16:20:30 +0100192 int error;
Steven Whitehousecd915492006-09-04 12:49:07 -0400193 u32 id;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000194
195 if (!capable(CAP_SYS_ADMIN))
196 return -EACCES;
197
198 id = simple_strtoul(buf, NULL, 0);
199
Steven Whitehouseea762332009-09-15 16:20:30 +0100200 error = gfs2_quota_refresh(sdp, 0, id);
201 return error ? error : len;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000202}
203
Steven Whitehouse64d576b2009-02-12 13:31:58 +0000204static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
205{
206 struct gfs2_glock *gl;
207 const struct gfs2_glock_operations *glops;
208 unsigned int glmode;
209 unsigned int gltype;
210 unsigned long long glnum;
211 char mode[16];
212 int rv;
213
214 if (!capable(CAP_SYS_ADMIN))
215 return -EACCES;
216
217 rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum,
218 mode);
219 if (rv != 3)
220 return -EINVAL;
221
222 if (strcmp(mode, "EX") == 0)
223 glmode = LM_ST_UNLOCKED;
224 else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0))
225 glmode = LM_ST_DEFERRED;
226 else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0))
227 glmode = LM_ST_SHARED;
228 else
229 return -EINVAL;
230
231 if (gltype > LM_TYPE_JOURNAL)
232 return -EINVAL;
233 glops = gfs2_glops_list[gltype];
234 if (glops == NULL)
235 return -EINVAL;
236 rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl);
237 if (rv)
238 return rv;
239 gfs2_glock_cb(gl, glmode);
240 gfs2_glock_put(gl);
241 return len;
242}
243
David Teiglandb3b94fa2006-01-16 16:50:04 +0000244
245#define GFS2_ATTR(name, mode, show, store) \
246static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store)
247
248GFS2_ATTR(id, 0444, id_show, NULL);
249GFS2_ATTR(fsname, 0444, fsname_show, NULL);
Steven Whitehouse02e3cc72009-02-10 13:48:30 +0000250GFS2_ATTR(uuid, 0444, uuid_show, NULL);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000251GFS2_ATTR(freeze, 0644, freeze_show, freeze_store);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000252GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store);
253GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store);
254GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store);
255GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store);
256GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store);
Steven Whitehouse64d576b2009-02-12 13:31:58 +0000257GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000258
259static struct attribute *gfs2_attrs[] = {
260 &gfs2_attr_id.attr,
261 &gfs2_attr_fsname.attr,
Steven Whitehouse02e3cc72009-02-10 13:48:30 +0000262 &gfs2_attr_uuid.attr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000263 &gfs2_attr_freeze.attr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000264 &gfs2_attr_withdraw.attr,
265 &gfs2_attr_statfs_sync.attr,
266 &gfs2_attr_quota_sync.attr,
267 &gfs2_attr_quota_refresh_user.attr,
268 &gfs2_attr_quota_refresh_group.attr,
Steven Whitehouse64d576b2009-02-12 13:31:58 +0000269 &gfs2_attr_demote_rq.attr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000270 NULL,
271};
272
David Teiglandb3b94fa2006-01-16 16:50:04 +0000273static struct kobj_type gfs2_ktype = {
274 .default_attrs = gfs2_attrs,
275 .sysfs_ops = &gfs2_attr_ops,
276};
277
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000278
279/*
280 * lock_module. Originally from lock_dlm
281 */
282
283static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf)
284{
285 const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops;
286 return sprintf(buf, "%s\n", ops->lm_proto_name);
287}
288
289static ssize_t block_show(struct gfs2_sbd *sdp, char *buf)
290{
291 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
292 ssize_t ret;
293 int val = 0;
294
295 if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_flags))
296 val = 1;
297 ret = sprintf(buf, "%d\n", val);
298 return ret;
299}
300
301static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
302{
303 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
304 ssize_t ret = len;
305 int val;
306
307 val = simple_strtol(buf, NULL, 0);
308
309 if (val == 1)
310 set_bit(DFL_BLOCK_LOCKS, &ls->ls_flags);
311 else if (val == 0) {
312 clear_bit(DFL_BLOCK_LOCKS, &ls->ls_flags);
313 smp_mb__after_clear_bit();
314 gfs2_glock_thaw(sdp);
315 } else {
316 ret = -EINVAL;
317 }
318 return ret;
319}
320
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000321static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf)
322{
323 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
324 return sprintf(buf, "%d\n", ls->ls_first);
325}
326
327static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf)
328{
329 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
330 return sprintf(buf, "%d\n", ls->ls_first_done);
331}
332
Steven Whitehousefe64d512009-05-19 10:01:18 +0100333static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000334{
Steven Whitehousefe64d512009-05-19 10:01:18 +0100335 unsigned jid;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000336 struct gfs2_jdesc *jd;
Steven Whitehousefe64d512009-05-19 10:01:18 +0100337 int rv;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000338
Steven Whitehousefe64d512009-05-19 10:01:18 +0100339 rv = sscanf(buf, "%u", &jid);
340 if (rv != 1)
341 return -EINVAL;
342
343 rv = -ESHUTDOWN;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000344 spin_lock(&sdp->sd_jindex_spin);
Steven Whitehousefe64d512009-05-19 10:01:18 +0100345 if (test_bit(SDF_NORECOVERY, &sdp->sd_flags))
346 goto out;
347 rv = -EBUSY;
348 if (sdp->sd_jdesc->jd_jid == jid)
349 goto out;
350 rv = -ENOENT;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000351 list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
352 if (jd->jd_jid != jid)
353 continue;
Steven Whitehousefe64d512009-05-19 10:01:18 +0100354 rv = slow_work_enqueue(&jd->jd_work);
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000355 break;
356 }
Steven Whitehousefe64d512009-05-19 10:01:18 +0100357out:
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000358 spin_unlock(&sdp->sd_jindex_spin);
Steven Whitehousefe64d512009-05-19 10:01:18 +0100359 return rv ? rv : len;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000360}
361
362static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf)
363{
364 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
365 return sprintf(buf, "%d\n", ls->ls_recover_jid_done);
366}
367
368static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf)
369{
370 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
371 return sprintf(buf, "%d\n", ls->ls_recover_jid_status);
372}
373
Steven Whitehousee1b28aa2009-05-26 15:41:27 +0100374static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf)
375{
376 return sprintf(buf, "%u\n", sdp->sd_lockstruct.ls_jid);
377}
378
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000379#define GDLM_ATTR(_name,_mode,_show,_store) \
Steven Whitehouse48c2b612009-05-13 14:49:48 +0100380static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store)
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000381
Steven Whitehoused7e623d2009-08-11 11:20:11 +0100382GDLM_ATTR(proto_name, 0444, proto_name_show, NULL);
383GDLM_ATTR(block, 0644, block_show, block_store);
384GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store);
Steven Whitehoused7e623d2009-08-11 11:20:11 +0100385GDLM_ATTR(jid, 0444, jid_show, NULL);
386GDLM_ATTR(first, 0444, lkfirst_show, NULL);
387GDLM_ATTR(first_done, 0444, first_done_show, NULL);
388GDLM_ATTR(recover, 0600, NULL, recover_store);
389GDLM_ATTR(recover_done, 0444, recover_done_show, NULL);
390GDLM_ATTR(recover_status, 0444, recover_status_show, NULL);
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000391
392static struct attribute *lock_module_attrs[] = {
393 &gdlm_attr_proto_name.attr,
394 &gdlm_attr_block.attr,
395 &gdlm_attr_withdraw.attr,
Steven Whitehousee1b28aa2009-05-26 15:41:27 +0100396 &gdlm_attr_jid.attr,
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000397 &gdlm_attr_first.attr,
398 &gdlm_attr_first_done.attr,
399 &gdlm_attr_recover.attr,
400 &gdlm_attr_recover_done.attr,
401 &gdlm_attr_recover_status.attr,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400402 NULL,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000403};
404
David Teiglandb3b94fa2006-01-16 16:50:04 +0000405/*
David Teiglandb3b94fa2006-01-16 16:50:04 +0000406 * get and set struct gfs2_tune fields
407 */
408
409static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf)
410{
David Teigland3204a6c2006-09-06 16:57:06 -0500411 return snprintf(buf, PAGE_SIZE, "%u %u\n",
412 sdp->sd_tune.gt_quota_scale_num,
413 sdp->sd_tune.gt_quota_scale_den);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000414}
415
416static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf,
417 size_t len)
418{
419 struct gfs2_tune *gt = &sdp->sd_tune;
420 unsigned int x, y;
421
422 if (!capable(CAP_SYS_ADMIN))
423 return -EACCES;
424
425 if (sscanf(buf, "%u %u", &x, &y) != 2 || !y)
426 return -EINVAL;
427
428 spin_lock(&gt->gt_spin);
429 gt->gt_quota_scale_num = x;
430 gt->gt_quota_scale_den = y;
431 spin_unlock(&gt->gt_spin);
432 return len;
433}
434
435static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field,
436 int check_zero, const char *buf, size_t len)
437{
438 struct gfs2_tune *gt = &sdp->sd_tune;
439 unsigned int x;
440
441 if (!capable(CAP_SYS_ADMIN))
442 return -EACCES;
443
444 x = simple_strtoul(buf, NULL, 0);
445
446 if (check_zero && !x)
447 return -EINVAL;
448
449 spin_lock(&gt->gt_spin);
450 *field = x;
451 spin_unlock(&gt->gt_spin);
452 return len;
453}
454
David Teiglandb3b94fa2006-01-16 16:50:04 +0000455#define TUNE_ATTR_3(name, show, store) \
Steven Whitehouse48c2b612009-05-13 14:49:48 +0100456static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000457
458#define TUNE_ATTR_2(name, store) \
459static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \
460{ \
David Teigland3204a6c2006-09-06 16:57:06 -0500461 return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \
David Teiglandb3b94fa2006-01-16 16:50:04 +0000462} \
463TUNE_ATTR_3(name, name##_show, store)
464
465#define TUNE_ATTR(name, check_zero) \
466static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
467{ \
468 return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \
469} \
470TUNE_ATTR_2(name, name##_store)
471
David Teiglandb3b94fa2006-01-16 16:50:04 +0000472TUNE_ATTR(incore_log_blocks, 0);
473TUNE_ATTR(log_flush_secs, 0);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000474TUNE_ATTR(quota_warn_period, 0);
475TUNE_ATTR(quota_quantum, 0);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000476TUNE_ATTR(max_readahead, 0);
477TUNE_ATTR(complain_secs, 0);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000478TUNE_ATTR(statfs_slow, 0);
479TUNE_ATTR(new_files_jdata, 0);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000480TUNE_ATTR(quota_simul_sync, 1);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000481TUNE_ATTR(stall_secs, 1);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000482TUNE_ATTR(statfs_quantum, 1);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000483TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
484
485static struct attribute *tune_attrs[] = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000486 &tune_attr_incore_log_blocks.attr,
487 &tune_attr_log_flush_secs.attr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000488 &tune_attr_quota_warn_period.attr,
489 &tune_attr_quota_quantum.attr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000490 &tune_attr_max_readahead.attr,
491 &tune_attr_complain_secs.attr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000492 &tune_attr_statfs_slow.attr,
493 &tune_attr_quota_simul_sync.attr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000494 &tune_attr_stall_secs.attr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000495 &tune_attr_statfs_quantum.attr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000496 &tune_attr_quota_scale.attr,
497 &tune_attr_new_files_jdata.attr,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400498 NULL,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000499};
500
David Teiglandb3b94fa2006-01-16 16:50:04 +0000501static struct attribute_group tune_group = {
502 .name = "tune",
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400503 .attrs = tune_attrs,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000504};
505
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000506static struct attribute_group lock_module_group = {
507 .name = "lock_module",
508 .attrs = lock_module_attrs,
509};
510
David Teiglandb3b94fa2006-01-16 16:50:04 +0000511int gfs2_sys_fs_add(struct gfs2_sbd *sdp)
512{
Steven Whitehouse440d6da2009-07-31 12:16:25 +0100513 struct super_block *sb = sdp->sd_vfs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000514 int error;
Steven Whitehouse440d6da2009-07-31 12:16:25 +0100515 char ro[20];
516 char spectator[20];
517 char *envp[] = { ro, spectator, NULL };
518
519 sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0);
520 sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000521
Greg Kroah-Hartman9bec1012007-10-29 20:13:17 +0100522 sdp->sd_kobj.kset = gfs2_kset;
Greg Kroah-Hartman901195e2007-12-17 15:54:39 -0400523 error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL,
524 "%s", sdp->sd_table_name);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000525 if (error)
526 goto fail;
527
David Teiglandb3b94fa2006-01-16 16:50:04 +0000528 error = sysfs_create_group(&sdp->sd_kobj, &tune_group);
529 if (error)
Steven Whitehousef6eb5342009-05-26 15:50:25 +0100530 goto fail_reg;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000531
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000532 error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group);
533 if (error)
534 goto fail_tune;
535
Steven Whitehouse31e54b02009-08-13 12:18:08 +0100536 error = sysfs_create_link(&sdp->sd_kobj,
537 &disk_to_dev(sb->s_bdev->bd_disk)->kobj,
538 "device");
539 if (error)
540 goto fail_lock_module;
541
Steven Whitehouse440d6da2009-07-31 12:16:25 +0100542 kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000543 return 0;
544
Steven Whitehouse31e54b02009-08-13 12:18:08 +0100545fail_lock_module:
546 sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000547fail_tune:
548 sysfs_remove_group(&sdp->sd_kobj, &tune_group);
Steven Whitehousea91ea692006-09-04 12:04:26 -0400549fail_reg:
Greg Kroah-Hartman197b12d2007-12-20 08:13:05 -0800550 kobject_put(&sdp->sd_kobj);
Steven Whitehousea91ea692006-09-04 12:04:26 -0400551fail:
David Teigland65952fb2006-09-15 13:09:11 -0500552 fs_err(sdp, "error %d adding sysfs files", error);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000553 return error;
554}
555
556void gfs2_sys_fs_del(struct gfs2_sbd *sdp)
557{
Steven Whitehouse31e54b02009-08-13 12:18:08 +0100558 sysfs_remove_link(&sdp->sd_kobj, "device");
David Teiglandb3b94fa2006-01-16 16:50:04 +0000559 sysfs_remove_group(&sdp->sd_kobj, &tune_group);
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000560 sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);
Greg Kroah-Hartman197b12d2007-12-20 08:13:05 -0800561 kobject_put(&sdp->sd_kobj);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000562}
563
Steven Whitehousefdd10622008-11-26 10:26:38 +0000564static int gfs2_uevent(struct kset *kset, struct kobject *kobj,
565 struct kobj_uevent_env *env)
566{
567 struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
Steven Whitehouse02e3cc72009-02-10 13:48:30 +0000568 const u8 *uuid = sdp->sd_sb.sb_uuid;
569
Steven Whitehousefdd10622008-11-26 10:26:38 +0000570 add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name);
571 add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name);
Steven Whitehouse440d6da2009-07-31 12:16:25 +0100572 if (!sdp->sd_args.ar_spectator)
573 add_uevent_var(env, "JOURNALID=%u", sdp->sd_lockstruct.ls_jid);
Joe Perchesf0b34ae2009-12-14 18:01:13 -0800574 if (gfs2_uuid_valid(uuid))
575 add_uevent_var(env, "UUID=%pUB", uuid);
Steven Whitehousefdd10622008-11-26 10:26:38 +0000576 return 0;
577}
578
579static struct kset_uevent_ops gfs2_uevent_ops = {
580 .uevent = gfs2_uevent,
581};
582
David Teiglandb3b94fa2006-01-16 16:50:04 +0000583int gfs2_sys_init(void)
584{
Steven Whitehousefdd10622008-11-26 10:26:38 +0000585 gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj);
Greg Kroah-Hartman9bec1012007-10-29 20:13:17 +0100586 if (!gfs2_kset)
587 return -ENOMEM;
588 return 0;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000589}
590
591void gfs2_sys_uninit(void)
592{
Greg Kroah-Hartman9bec1012007-10-29 20:13:17 +0100593 kset_unregister(gfs2_kset);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000594}
595