17336d0e6SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2b3b94faaSDavid Teigland /*
3b3b94faaSDavid Teigland * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
43a8a9a10SSteven Whitehouse * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5b3b94faaSDavid Teigland */
6b3b94faaSDavid Teigland
7d77d1b58SJoe Perches #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8d77d1b58SJoe Perches
9b3b94faaSDavid Teigland #include <linux/sched.h>
105b825c3aSIngo Molnar #include <linux/cred.h>
11b3b94faaSDavid Teigland #include <linux/spinlock.h>
12b3b94faaSDavid Teigland #include <linux/completion.h>
13b3b94faaSDavid Teigland #include <linux/buffer_head.h>
14b3b94faaSDavid Teigland #include <linux/module.h>
15b3b94faaSDavid Teigland #include <linux/kobject.h>
167c0f6ba6SLinus Torvalds #include <linux/uaccess.h>
17f057f6cdSSteven Whitehouse #include <linux/gfs2_ondisk.h>
18322cbb50SChristoph Hellwig #include <linux/blkdev.h>
19b3b94faaSDavid Teigland
20b3b94faaSDavid Teigland #include "gfs2.h"
215c676f6dSSteven Whitehouse #include "incore.h"
22b3b94faaSDavid Teigland #include "sys.h"
23b3b94faaSDavid Teigland #include "super.h"
24b3b94faaSDavid Teigland #include "glock.h"
25b3b94faaSDavid Teigland #include "quota.h"
265c676f6dSSteven Whitehouse #include "util.h"
2764d576baSSteven Whitehouse #include "glops.h"
286ecd7c2dSTejun Heo #include "recovery.h"
29b3b94faaSDavid Teigland
3048c2b613SSteven Whitehouse struct gfs2_attr {
3148c2b613SSteven Whitehouse struct attribute attr;
3248c2b613SSteven Whitehouse ssize_t (*show)(struct gfs2_sbd *, char *);
3348c2b613SSteven Whitehouse ssize_t (*store)(struct gfs2_sbd *, const char *, size_t);
3448c2b613SSteven Whitehouse };
3548c2b613SSteven Whitehouse
gfs2_attr_show(struct kobject * kobj,struct attribute * attr,char * buf)3648c2b613SSteven Whitehouse static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr,
3748c2b613SSteven Whitehouse char *buf)
3848c2b613SSteven Whitehouse {
3948c2b613SSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
4048c2b613SSteven Whitehouse struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
4148c2b613SSteven Whitehouse return a->show ? a->show(sdp, buf) : 0;
4248c2b613SSteven Whitehouse }
4348c2b613SSteven Whitehouse
gfs2_attr_store(struct kobject * kobj,struct attribute * attr,const char * buf,size_t len)4448c2b613SSteven Whitehouse static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr,
4548c2b613SSteven Whitehouse const char *buf, size_t len)
4648c2b613SSteven Whitehouse {
4748c2b613SSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
4848c2b613SSteven Whitehouse struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
4948c2b613SSteven Whitehouse return a->store ? a->store(sdp, buf, len) : len;
5048c2b613SSteven Whitehouse }
5148c2b613SSteven Whitehouse
5252cf25d0SEmese Revfy static const struct sysfs_ops gfs2_attr_ops = {
5348c2b613SSteven Whitehouse .show = gfs2_attr_show,
5448c2b613SSteven Whitehouse .store = gfs2_attr_store,
5548c2b613SSteven Whitehouse };
5648c2b613SSteven Whitehouse
5748c2b613SSteven Whitehouse
5848c2b613SSteven Whitehouse static struct kset *gfs2_kset;
5948c2b613SSteven Whitehouse
id_show(struct gfs2_sbd * sdp,char * buf)60b3b94faaSDavid Teigland static ssize_t id_show(struct gfs2_sbd *sdp, char *buf)
61b3b94faaSDavid Teigland {
62c7227e46SBob Peterson return snprintf(buf, PAGE_SIZE, "%u:%u\n",
63c7227e46SBob Peterson MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev));
64b3b94faaSDavid Teigland }
65b3b94faaSDavid Teigland
status_show(struct gfs2_sbd * sdp,char * buf)669f9eb5a5SBob Peterson static ssize_t status_show(struct gfs2_sbd *sdp, char *buf)
679f9eb5a5SBob Peterson {
689f9eb5a5SBob Peterson unsigned long f = sdp->sd_flags;
699f9eb5a5SBob Peterson ssize_t s;
709f9eb5a5SBob Peterson
719f9eb5a5SBob Peterson s = snprintf(buf, PAGE_SIZE,
729f9eb5a5SBob Peterson "Journal Checked: %d\n"
739f9eb5a5SBob Peterson "Journal Live: %d\n"
749f9eb5a5SBob Peterson "Journal ID: %d\n"
759f9eb5a5SBob Peterson "Spectator: %d\n"
769f9eb5a5SBob Peterson "Withdrawn: %d\n"
779f9eb5a5SBob Peterson "No barriers: %d\n"
789f9eb5a5SBob Peterson "No recovery: %d\n"
799f9eb5a5SBob Peterson "Demote: %d\n"
809f9eb5a5SBob Peterson "No Journal ID: %d\n"
819f9eb5a5SBob Peterson "Mounted RO: %d\n"
829f9eb5a5SBob Peterson "RO Recovery: %d\n"
839f9eb5a5SBob Peterson "Skip DLM Unlock: %d\n"
849f9eb5a5SBob Peterson "Force AIL Flush: %d\n"
855432af15SAndreas Gruenbacher "FS Freeze Initiator: %d\n"
869f9eb5a5SBob Peterson "FS Frozen: %d\n"
879f9eb5a5SBob Peterson "Withdrawing: %d\n"
889f9eb5a5SBob Peterson "Withdraw In Prog: %d\n"
899f9eb5a5SBob Peterson "Remote Withdraw: %d\n"
909f9eb5a5SBob Peterson "Withdraw Recovery: %d\n"
9152c2d389SAndreas Gruenbacher "Killing: %d\n"
929f9eb5a5SBob Peterson "sd_log_error: %d\n"
939f9eb5a5SBob Peterson "sd_log_flush_lock: %d\n"
949f9eb5a5SBob Peterson "sd_log_num_revoke: %u\n"
959f9eb5a5SBob Peterson "sd_log_in_flight: %d\n"
969f9eb5a5SBob Peterson "sd_log_blks_needed: %d\n"
979f9eb5a5SBob Peterson "sd_log_blks_free: %d\n"
989f9eb5a5SBob Peterson "sd_log_flush_head: %d\n"
999f9eb5a5SBob Peterson "sd_log_flush_tail: %d\n"
1009f9eb5a5SBob Peterson "sd_log_blks_reserved: %d\n"
10103d468f1SBob Peterson "sd_log_revokes_available: %d\n"
10203d468f1SBob Peterson "sd_log_pinned: %d\n"
10303d468f1SBob Peterson "sd_log_thresh1: %d\n"
10403d468f1SBob Peterson "sd_log_thresh2: %d\n",
1059f9eb5a5SBob Peterson test_bit(SDF_JOURNAL_CHECKED, &f),
1069f9eb5a5SBob Peterson test_bit(SDF_JOURNAL_LIVE, &f),
1079f9eb5a5SBob Peterson (sdp->sd_jdesc ? sdp->sd_jdesc->jd_jid : 0),
1089f9eb5a5SBob Peterson (sdp->sd_args.ar_spectator ? 1 : 0),
1099f9eb5a5SBob Peterson test_bit(SDF_WITHDRAWN, &f),
1109f9eb5a5SBob Peterson test_bit(SDF_NOBARRIERS, &f),
1119f9eb5a5SBob Peterson test_bit(SDF_NORECOVERY, &f),
1129f9eb5a5SBob Peterson test_bit(SDF_DEMOTE, &f),
1139f9eb5a5SBob Peterson test_bit(SDF_NOJOURNALID, &f),
1149f9eb5a5SBob Peterson (sb_rdonly(sdp->sd_vfs) ? 1 : 0),
1159f9eb5a5SBob Peterson test_bit(SDF_RORECOVERY, &f),
1169f9eb5a5SBob Peterson test_bit(SDF_SKIP_DLM_UNLOCK, &f),
1179f9eb5a5SBob Peterson test_bit(SDF_FORCE_AIL_FLUSH, &f),
118cad1e158SAndreas Gruenbacher test_bit(SDF_FREEZE_INITIATOR, &f),
1195432af15SAndreas Gruenbacher test_bit(SDF_FROZEN, &f),
1209f9eb5a5SBob Peterson test_bit(SDF_WITHDRAWING, &f),
1219f9eb5a5SBob Peterson test_bit(SDF_WITHDRAW_IN_PROG, &f),
1229f9eb5a5SBob Peterson test_bit(SDF_REMOTE_WITHDRAW, &f),
1239f9eb5a5SBob Peterson test_bit(SDF_WITHDRAW_RECOVERY, &f),
124e7beb8b6SAndreas Gruenbacher test_bit(SDF_KILL, &f),
1259f9eb5a5SBob Peterson sdp->sd_log_error,
1269f9eb5a5SBob Peterson rwsem_is_locked(&sdp->sd_log_flush_lock),
1279f9eb5a5SBob Peterson sdp->sd_log_num_revoke,
1289f9eb5a5SBob Peterson atomic_read(&sdp->sd_log_in_flight),
1299f9eb5a5SBob Peterson atomic_read(&sdp->sd_log_blks_needed),
1309f9eb5a5SBob Peterson atomic_read(&sdp->sd_log_blks_free),
1319f9eb5a5SBob Peterson sdp->sd_log_flush_head,
1329f9eb5a5SBob Peterson sdp->sd_log_flush_tail,
1339f9eb5a5SBob Peterson sdp->sd_log_blks_reserved,
13403d468f1SBob Peterson atomic_read(&sdp->sd_log_revokes_available),
13503d468f1SBob Peterson atomic_read(&sdp->sd_log_pinned),
13603d468f1SBob Peterson atomic_read(&sdp->sd_log_thresh1),
13703d468f1SBob Peterson atomic_read(&sdp->sd_log_thresh2));
1389f9eb5a5SBob Peterson return s;
1399f9eb5a5SBob Peterson }
1409f9eb5a5SBob Peterson
fsname_show(struct gfs2_sbd * sdp,char * buf)141b3b94faaSDavid Teigland static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf)
142b3b94faaSDavid Teigland {
1433204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname);
144b3b94faaSDavid Teigland }
145b3b94faaSDavid Teigland
uuid_show(struct gfs2_sbd * sdp,char * buf)14602e3cc70SSteven Whitehouse static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf)
14702e3cc70SSteven Whitehouse {
14832e471efSSteven Whitehouse struct super_block *s = sdp->sd_vfs;
14985787090SChristoph Hellwig
15002e3cc70SSteven Whitehouse buf[0] = '\0';
15185787090SChristoph Hellwig if (uuid_is_null(&s->s_uuid))
15202e3cc70SSteven Whitehouse return 0;
15385787090SChristoph Hellwig return snprintf(buf, PAGE_SIZE, "%pUB\n", &s->s_uuid);
15402e3cc70SSteven Whitehouse }
15502e3cc70SSteven Whitehouse
freeze_show(struct gfs2_sbd * sdp,char * buf)156b3b94faaSDavid Teigland static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
157b3b94faaSDavid Teigland {
158d564053fSSteven Whitehouse struct super_block *sb = sdp->sd_vfs;
159d564053fSSteven Whitehouse int frozen = (sb->s_writers.frozen == SB_UNFROZEN) ? 0 : 1;
160b3b94faaSDavid Teigland
1613566c964Salex chen return snprintf(buf, PAGE_SIZE, "%d\n", frozen);
162b3b94faaSDavid Teigland }
163b3b94faaSDavid Teigland
freeze_store(struct gfs2_sbd * sdp,const char * buf,size_t len)164b3b94faaSDavid Teigland static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
165b3b94faaSDavid Teigland {
166e50ead48SFabian Frederick int error, n;
167e50ead48SFabian Frederick
168e50ead48SFabian Frederick error = kstrtoint(buf, 0, &n);
169e50ead48SFabian Frederick if (error)
170e50ead48SFabian Frederick return error;
171b3b94faaSDavid Teigland
172b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN))
17341735818SZhao Hongjiang return -EPERM;
174b3b94faaSDavid Teigland
175b3b94faaSDavid Teigland switch (n) {
176b3b94faaSDavid Teigland case 0:
177880b9577SDarrick J. Wong error = thaw_super(sdp->sd_vfs, FREEZE_HOLDER_USERSPACE);
178b3b94faaSDavid Teigland break;
179b3b94faaSDavid Teigland case 1:
180880b9577SDarrick J. Wong error = freeze_super(sdp->sd_vfs, FREEZE_HOLDER_USERSPACE);
181b3b94faaSDavid Teigland break;
182b3b94faaSDavid Teigland default:
183d564053fSSteven Whitehouse return -EINVAL;
184b3b94faaSDavid Teigland }
185b3b94faaSDavid Teigland
186d564053fSSteven Whitehouse if (error) {
187af38816eSAndreas Gruenbacher fs_warn(sdp, "freeze %d error %d\n", n, error);
188d564053fSSteven Whitehouse return error;
189d564053fSSteven Whitehouse }
190b3b94faaSDavid Teigland
191d564053fSSteven Whitehouse return len;
192b3b94faaSDavid Teigland }
193b3b94faaSDavid Teigland
withdraw_show(struct gfs2_sbd * sdp,char * buf)194b3b94faaSDavid Teigland static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf)
195b3b94faaSDavid Teigland {
1964d927b03SAndreas Gruenbacher unsigned int b = gfs2_withdrawing_or_withdrawn(sdp);
1973204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", b);
198b3b94faaSDavid Teigland }
199b3b94faaSDavid Teigland
withdraw_store(struct gfs2_sbd * sdp,const char * buf,size_t len)200b3b94faaSDavid Teigland static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
201b3b94faaSDavid Teigland {
202e50ead48SFabian Frederick int error, val;
203e50ead48SFabian Frederick
204b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN))
20541735818SZhao Hongjiang return -EPERM;
206b3b94faaSDavid Teigland
207e50ead48SFabian Frederick error = kstrtoint(buf, 0, &val);
208e50ead48SFabian Frederick if (error)
209e50ead48SFabian Frederick return error;
210e50ead48SFabian Frederick
211e50ead48SFabian Frederick if (val != 1)
212b3b94faaSDavid Teigland return -EINVAL;
213b3b94faaSDavid Teigland
214badb55ecSAndreas Gruenbacher gfs2_lm(sdp, "withdrawing from cluster at user's request\n");
215badb55ecSAndreas Gruenbacher gfs2_withdraw(sdp);
216cb94eb06SJoe Perches
217b3b94faaSDavid Teigland return len;
218b3b94faaSDavid Teigland }
219b3b94faaSDavid Teigland
statfs_sync_store(struct gfs2_sbd * sdp,const char * buf,size_t len)220b3b94faaSDavid Teigland static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf,
221b3b94faaSDavid Teigland size_t len)
222b3b94faaSDavid Teigland {
223e50ead48SFabian Frederick int error, val;
224e50ead48SFabian Frederick
225b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN))
22641735818SZhao Hongjiang return -EPERM;
227b3b94faaSDavid Teigland
228e50ead48SFabian Frederick error = kstrtoint(buf, 0, &val);
229e50ead48SFabian Frederick if (error)
230e50ead48SFabian Frederick return error;
231e50ead48SFabian Frederick
232e50ead48SFabian Frederick if (val != 1)
233b3b94faaSDavid Teigland return -EINVAL;
234b3b94faaSDavid Teigland
2358c42d637SSteven Whitehouse gfs2_statfs_sync(sdp->sd_vfs, 0);
236b3b94faaSDavid Teigland return len;
237b3b94faaSDavid Teigland }
238b3b94faaSDavid Teigland
quota_sync_store(struct gfs2_sbd * sdp,const char * buf,size_t len)239b3b94faaSDavid Teigland static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
240b3b94faaSDavid Teigland size_t len)
241b3b94faaSDavid Teigland {
242e50ead48SFabian Frederick int error, val;
243e50ead48SFabian Frederick
244b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN))
24541735818SZhao Hongjiang return -EPERM;
246b3b94faaSDavid Teigland
247e50ead48SFabian Frederick error = kstrtoint(buf, 0, &val);
248e50ead48SFabian Frederick if (error)
249e50ead48SFabian Frederick return error;
250e50ead48SFabian Frederick
251e50ead48SFabian Frederick if (val != 1)
252b3b94faaSDavid Teigland return -EINVAL;
253b3b94faaSDavid Teigland
254ceed1723SJan Kara gfs2_quota_sync(sdp->sd_vfs, 0);
255b3b94faaSDavid Teigland return len;
256b3b94faaSDavid Teigland }
257b3b94faaSDavid Teigland
quota_refresh_user_store(struct gfs2_sbd * sdp,const char * buf,size_t len)258b3b94faaSDavid Teigland static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
259b3b94faaSDavid Teigland size_t len)
260b3b94faaSDavid Teigland {
261ed87dabcSEric W. Biederman struct kqid qid;
262ea762338SSteven Whitehouse int error;
263cd915493SSteven Whitehouse u32 id;
264b3b94faaSDavid Teigland
265b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN))
26641735818SZhao Hongjiang return -EPERM;
267b3b94faaSDavid Teigland
268e50ead48SFabian Frederick error = kstrtou32(buf, 0, &id);
269e50ead48SFabian Frederick if (error)
270e50ead48SFabian Frederick return error;
271b3b94faaSDavid Teigland
272ed87dabcSEric W. Biederman qid = make_kqid(current_user_ns(), USRQUOTA, id);
273ed87dabcSEric W. Biederman if (!qid_valid(qid))
274ed87dabcSEric W. Biederman return -EINVAL;
275ed87dabcSEric W. Biederman
276ed87dabcSEric W. Biederman error = gfs2_quota_refresh(sdp, qid);
277ea762338SSteven Whitehouse return error ? error : len;
278b3b94faaSDavid Teigland }
279b3b94faaSDavid Teigland
quota_refresh_group_store(struct gfs2_sbd * sdp,const char * buf,size_t len)280b3b94faaSDavid Teigland static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
281b3b94faaSDavid Teigland size_t len)
282b3b94faaSDavid Teigland {
283ed87dabcSEric W. Biederman struct kqid qid;
284ea762338SSteven Whitehouse int error;
285cd915493SSteven Whitehouse u32 id;
286b3b94faaSDavid Teigland
287b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN))
28841735818SZhao Hongjiang return -EPERM;
289b3b94faaSDavid Teigland
290e50ead48SFabian Frederick error = kstrtou32(buf, 0, &id);
291e50ead48SFabian Frederick if (error)
292e50ead48SFabian Frederick return error;
293b3b94faaSDavid Teigland
294ed87dabcSEric W. Biederman qid = make_kqid(current_user_ns(), GRPQUOTA, id);
295ed87dabcSEric W. Biederman if (!qid_valid(qid))
296ed87dabcSEric W. Biederman return -EINVAL;
297ed87dabcSEric W. Biederman
298ed87dabcSEric W. Biederman error = gfs2_quota_refresh(sdp, qid);
299ea762338SSteven Whitehouse return error ? error : len;
300b3b94faaSDavid Teigland }
301b3b94faaSDavid Teigland
demote_rq_store(struct gfs2_sbd * sdp,const char * buf,size_t len)30264d576baSSteven Whitehouse static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
30364d576baSSteven Whitehouse {
30464d576baSSteven Whitehouse struct gfs2_glock *gl;
30564d576baSSteven Whitehouse const struct gfs2_glock_operations *glops;
30664d576baSSteven Whitehouse unsigned int glmode;
30764d576baSSteven Whitehouse unsigned int gltype;
30864d576baSSteven Whitehouse unsigned long long glnum;
30964d576baSSteven Whitehouse char mode[16];
31064d576baSSteven Whitehouse int rv;
31164d576baSSteven Whitehouse
31264d576baSSteven Whitehouse if (!capable(CAP_SYS_ADMIN))
31341735818SZhao Hongjiang return -EPERM;
31464d576baSSteven Whitehouse
31564d576baSSteven Whitehouse rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum,
31664d576baSSteven Whitehouse mode);
31764d576baSSteven Whitehouse if (rv != 3)
31864d576baSSteven Whitehouse return -EINVAL;
31964d576baSSteven Whitehouse
32064d576baSSteven Whitehouse if (strcmp(mode, "EX") == 0)
32164d576baSSteven Whitehouse glmode = LM_ST_UNLOCKED;
32264d576baSSteven Whitehouse else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0))
32364d576baSSteven Whitehouse glmode = LM_ST_DEFERRED;
32464d576baSSteven Whitehouse else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0))
32564d576baSSteven Whitehouse glmode = LM_ST_SHARED;
32664d576baSSteven Whitehouse else
32764d576baSSteven Whitehouse return -EINVAL;
32864d576baSSteven Whitehouse
32964d576baSSteven Whitehouse if (gltype > LM_TYPE_JOURNAL)
33064d576baSSteven Whitehouse return -EINVAL;
33124972557SBenjamin Marzinski if (gltype == LM_TYPE_NONDISK && glnum == GFS2_FREEZE_LOCK)
33224972557SBenjamin Marzinski glops = &gfs2_freeze_glops;
33313466985SSteven Whitehouse else
33464d576baSSteven Whitehouse glops = gfs2_glops_list[gltype];
33564d576baSSteven Whitehouse if (glops == NULL)
33664d576baSSteven Whitehouse return -EINVAL;
3376a99be5dSSteven Whitehouse if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags))
338913a71d2SSteven Whitehouse fs_info(sdp, "demote interface used\n");
339*3592bfafSAndreas Gruenbacher rv = gfs2_glock_get(sdp, glnum, glops, NO_CREATE, &gl);
34064d576baSSteven Whitehouse if (rv)
34164d576baSSteven Whitehouse return rv;
34264d576baSSteven Whitehouse gfs2_glock_cb(gl, glmode);
34364d576baSSteven Whitehouse gfs2_glock_put(gl);
34464d576baSSteven Whitehouse return len;
34564d576baSSteven Whitehouse }
34664d576baSSteven Whitehouse
347b3b94faaSDavid Teigland
348b3b94faaSDavid Teigland #define GFS2_ATTR(name, mode, show, store) \
349b3b94faaSDavid Teigland static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store)
350b3b94faaSDavid Teigland
351b3b94faaSDavid Teigland GFS2_ATTR(id, 0444, id_show, NULL);
352b3b94faaSDavid Teigland GFS2_ATTR(fsname, 0444, fsname_show, NULL);
35302e3cc70SSteven Whitehouse GFS2_ATTR(uuid, 0444, uuid_show, NULL);
354b3b94faaSDavid Teigland GFS2_ATTR(freeze, 0644, freeze_show, freeze_store);
355b3b94faaSDavid Teigland GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store);
356b3b94faaSDavid Teigland GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store);
357b3b94faaSDavid Teigland GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store);
358b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store);
359b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store);
36064d576baSSteven Whitehouse GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store);
3619f9eb5a5SBob Peterson GFS2_ATTR(status, 0400, status_show, NULL);
362b3b94faaSDavid Teigland
363b3b94faaSDavid Teigland static struct attribute *gfs2_attrs[] = {
364b3b94faaSDavid Teigland &gfs2_attr_id.attr,
365b3b94faaSDavid Teigland &gfs2_attr_fsname.attr,
36602e3cc70SSteven Whitehouse &gfs2_attr_uuid.attr,
367b3b94faaSDavid Teigland &gfs2_attr_freeze.attr,
368b3b94faaSDavid Teigland &gfs2_attr_withdraw.attr,
369b3b94faaSDavid Teigland &gfs2_attr_statfs_sync.attr,
370b3b94faaSDavid Teigland &gfs2_attr_quota_sync.attr,
371b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_user.attr,
372b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_group.attr,
37364d576baSSteven Whitehouse &gfs2_attr_demote_rq.attr,
3749f9eb5a5SBob Peterson &gfs2_attr_status.attr,
375b3b94faaSDavid Teigland NULL,
376b3b94faaSDavid Teigland };
377ef254d13SKimberly Brown ATTRIBUTE_GROUPS(gfs2);
378b3b94faaSDavid Teigland
gfs2_sbd_release(struct kobject * kobj)3790d515210SBob Peterson static void gfs2_sbd_release(struct kobject *kobj)
3800d515210SBob Peterson {
3810d515210SBob Peterson struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
3820d515210SBob Peterson
383c2a04b02SJamie Iles complete(&sdp->sd_kobj_unregister);
3840d515210SBob Peterson }
3850d515210SBob Peterson
386b3b94faaSDavid Teigland static struct kobj_type gfs2_ktype = {
3870d515210SBob Peterson .release = gfs2_sbd_release,
388ef254d13SKimberly Brown .default_groups = gfs2_groups,
389b3b94faaSDavid Teigland .sysfs_ops = &gfs2_attr_ops,
390b3b94faaSDavid Teigland };
391b3b94faaSDavid Teigland
392f057f6cdSSteven Whitehouse
393f057f6cdSSteven Whitehouse /*
394f057f6cdSSteven Whitehouse * lock_module. Originally from lock_dlm
395f057f6cdSSteven Whitehouse */
396f057f6cdSSteven Whitehouse
proto_name_show(struct gfs2_sbd * sdp,char * buf)397f057f6cdSSteven Whitehouse static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf)
398f057f6cdSSteven Whitehouse {
399f057f6cdSSteven Whitehouse const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops;
400f057f6cdSSteven Whitehouse return sprintf(buf, "%s\n", ops->lm_proto_name);
401f057f6cdSSteven Whitehouse }
402f057f6cdSSteven Whitehouse
block_show(struct gfs2_sbd * sdp,char * buf)403f057f6cdSSteven Whitehouse static ssize_t block_show(struct gfs2_sbd *sdp, char *buf)
404f057f6cdSSteven Whitehouse {
405f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct;
406f057f6cdSSteven Whitehouse ssize_t ret;
407f057f6cdSSteven Whitehouse int val = 0;
408f057f6cdSSteven Whitehouse
409e0c2a9aaSDavid Teigland if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags))
410f057f6cdSSteven Whitehouse val = 1;
411f057f6cdSSteven Whitehouse ret = sprintf(buf, "%d\n", val);
412f057f6cdSSteven Whitehouse return ret;
413f057f6cdSSteven Whitehouse }
414f057f6cdSSteven Whitehouse
block_store(struct gfs2_sbd * sdp,const char * buf,size_t len)415f057f6cdSSteven Whitehouse static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
416f057f6cdSSteven Whitehouse {
417f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct;
418e50ead48SFabian Frederick int ret, val;
419f057f6cdSSteven Whitehouse
420e50ead48SFabian Frederick ret = kstrtoint(buf, 0, &val);
421e50ead48SFabian Frederick if (ret)
422e50ead48SFabian Frederick return ret;
423f057f6cdSSteven Whitehouse
424f057f6cdSSteven Whitehouse if (val == 1)
425e0c2a9aaSDavid Teigland set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
426f057f6cdSSteven Whitehouse else if (val == 0) {
427e0c2a9aaSDavid Teigland clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
4284e857c58SPeter Zijlstra smp_mb__after_atomic();
429f057f6cdSSteven Whitehouse gfs2_glock_thaw(sdp);
430f057f6cdSSteven Whitehouse } else {
431e50ead48SFabian Frederick return -EINVAL;
432f057f6cdSSteven Whitehouse }
433e50ead48SFabian Frederick return len;
434f057f6cdSSteven Whitehouse }
435f057f6cdSSteven Whitehouse
wdack_show(struct gfs2_sbd * sdp,char * buf)436fd95e81cSSteven Whitehouse static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf)
437fd95e81cSSteven Whitehouse {
438fd95e81cSSteven Whitehouse int val = completion_done(&sdp->sd_wdack) ? 1 : 0;
439fd95e81cSSteven Whitehouse
440fd95e81cSSteven Whitehouse return sprintf(buf, "%d\n", val);
441fd95e81cSSteven Whitehouse }
442fd95e81cSSteven Whitehouse
wdack_store(struct gfs2_sbd * sdp,const char * buf,size_t len)443fd95e81cSSteven Whitehouse static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
444fd95e81cSSteven Whitehouse {
445e50ead48SFabian Frederick int ret, val;
446fd95e81cSSteven Whitehouse
447e50ead48SFabian Frederick ret = kstrtoint(buf, 0, &val);
448e50ead48SFabian Frederick if (ret)
449e50ead48SFabian Frederick return ret;
450fd95e81cSSteven Whitehouse
451fd95e81cSSteven Whitehouse if ((val == 1) &&
452fd95e81cSSteven Whitehouse !strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
453fd95e81cSSteven Whitehouse complete(&sdp->sd_wdack);
454fd95e81cSSteven Whitehouse else
455e50ead48SFabian Frederick return -EINVAL;
456e50ead48SFabian Frederick return len;
457fd95e81cSSteven Whitehouse }
458fd95e81cSSteven Whitehouse
lkfirst_show(struct gfs2_sbd * sdp,char * buf)459f057f6cdSSteven Whitehouse static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf)
460f057f6cdSSteven Whitehouse {
461f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct;
462f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first);
463f057f6cdSSteven Whitehouse }
464f057f6cdSSteven Whitehouse
lkfirst_store(struct gfs2_sbd * sdp,const char * buf,size_t len)465ba6e9364SSteven Whitehouse static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
466ba6e9364SSteven Whitehouse {
467ba6e9364SSteven Whitehouse unsigned first;
468ba6e9364SSteven Whitehouse int rv;
469ba6e9364SSteven Whitehouse
470ba6e9364SSteven Whitehouse rv = sscanf(buf, "%u", &first);
471ba6e9364SSteven Whitehouse if (rv != 1 || first > 1)
472ba6e9364SSteven Whitehouse return -EINVAL;
4733942ae53SSteven Whitehouse rv = wait_for_completion_killable(&sdp->sd_locking_init);
4743942ae53SSteven Whitehouse if (rv)
4753942ae53SSteven Whitehouse return rv;
476ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin);
477ba6e9364SSteven Whitehouse rv = -EBUSY;
478ba6e9364SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)
479ba6e9364SSteven Whitehouse goto out;
480ba6e9364SSteven Whitehouse rv = -EINVAL;
481ba6e9364SSteven Whitehouse if (sdp->sd_args.ar_spectator)
482ba6e9364SSteven Whitehouse goto out;
483ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
484ba6e9364SSteven Whitehouse goto out;
485ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_first = first;
486ba6e9364SSteven Whitehouse rv = 0;
487ba6e9364SSteven Whitehouse out:
488ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin);
489ba6e9364SSteven Whitehouse return rv ? rv : len;
490ba6e9364SSteven Whitehouse }
491ba6e9364SSteven Whitehouse
first_done_show(struct gfs2_sbd * sdp,char * buf)492f057f6cdSSteven Whitehouse static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf)
493f057f6cdSSteven Whitehouse {
494f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct;
495e0c2a9aaSDavid Teigland return sprintf(buf, "%d\n", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags));
496f057f6cdSSteven Whitehouse }
497f057f6cdSSteven Whitehouse
gfs2_recover_set(struct gfs2_sbd * sdp,unsigned jid)498e0c2a9aaSDavid Teigland int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid)
499f057f6cdSSteven Whitehouse {
500f057f6cdSSteven Whitehouse struct gfs2_jdesc *jd;
501fe64d517SSteven Whitehouse int rv;
502f057f6cdSSteven Whitehouse
5030e48e055SBob Peterson /* Wait for our primary journal to be initialized */
5040e48e055SBob Peterson wait_for_completion(&sdp->sd_journal_ready);
5050e48e055SBob Peterson
506f057f6cdSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin);
507fe64d517SSteven Whitehouse rv = -EBUSY;
5084a772772SBob Peterson /**
5094a772772SBob Peterson * If we're a spectator, we use journal0, but it's not really ours.
5104a772772SBob Peterson * So we need to wait for its recovery too. If we skip it we'd never
5114a772772SBob Peterson * queue work to the recovery workqueue, and so its completion would
5124a772772SBob Peterson * never clear the DFL_BLOCK_LOCKS flag, so all our locks would
5134a772772SBob Peterson * permanently stop working.
5144a772772SBob Peterson */
515601ef0d5SBob Peterson if (!sdp->sd_jdesc)
516601ef0d5SBob Peterson goto out;
5174a772772SBob Peterson if (sdp->sd_jdesc->jd_jid == jid && !sdp->sd_args.ar_spectator)
518fe64d517SSteven Whitehouse goto out;
519fe64d517SSteven Whitehouse rv = -ENOENT;
520f057f6cdSSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
5214a772772SBob Peterson if (jd->jd_jid != jid && !sdp->sd_args.ar_spectator)
522f057f6cdSSteven Whitehouse continue;
5236ecd7c2dSTejun Heo rv = gfs2_recover_journal(jd, false);
524f057f6cdSSteven Whitehouse break;
525f057f6cdSSteven Whitehouse }
526fe64d517SSteven Whitehouse out:
527f057f6cdSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin);
528e0c2a9aaSDavid Teigland return rv;
529e0c2a9aaSDavid Teigland }
530e0c2a9aaSDavid Teigland
recover_store(struct gfs2_sbd * sdp,const char * buf,size_t len)531e0c2a9aaSDavid Teigland static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
532e0c2a9aaSDavid Teigland {
533e0c2a9aaSDavid Teigland unsigned jid;
534e0c2a9aaSDavid Teigland int rv;
535e0c2a9aaSDavid Teigland
536e0c2a9aaSDavid Teigland rv = sscanf(buf, "%u", &jid);
537e0c2a9aaSDavid Teigland if (rv != 1)
538e0c2a9aaSDavid Teigland return -EINVAL;
539e0c2a9aaSDavid Teigland
5401a058f52SDavid Teigland if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) {
5411a058f52SDavid Teigland rv = -ESHUTDOWN;
5421a058f52SDavid Teigland goto out;
5431a058f52SDavid Teigland }
544e0c2a9aaSDavid Teigland
5451a058f52SDavid Teigland rv = gfs2_recover_set(sdp, jid);
5461a058f52SDavid Teigland out:
547fe64d517SSteven Whitehouse return rv ? rv : len;
548f057f6cdSSteven Whitehouse }
549f057f6cdSSteven Whitehouse
recover_done_show(struct gfs2_sbd * sdp,char * buf)550f057f6cdSSteven Whitehouse static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf)
551f057f6cdSSteven Whitehouse {
552f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct;
553f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_done);
554f057f6cdSSteven Whitehouse }
555f057f6cdSSteven Whitehouse
recover_status_show(struct gfs2_sbd * sdp,char * buf)556f057f6cdSSteven Whitehouse static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf)
557f057f6cdSSteven Whitehouse {
558f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct;
559f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_status);
560f057f6cdSSteven Whitehouse }
561f057f6cdSSteven Whitehouse
jid_show(struct gfs2_sbd * sdp,char * buf)562e1b28aabSSteven Whitehouse static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf)
563e1b28aabSSteven Whitehouse {
564feb47ca9SSteven Whitehouse return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid);
565e1b28aabSSteven Whitehouse }
566e1b28aabSSteven Whitehouse
jid_store(struct gfs2_sbd * sdp,const char * buf,size_t len)567ba6e9364SSteven Whitehouse static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
568ba6e9364SSteven Whitehouse {
569feb47ca9SSteven Whitehouse int jid;
570ba6e9364SSteven Whitehouse int rv;
571ba6e9364SSteven Whitehouse
572feb47ca9SSteven Whitehouse rv = sscanf(buf, "%d", &jid);
573ba6e9364SSteven Whitehouse if (rv != 1)
574ba6e9364SSteven Whitehouse return -EINVAL;
5753942ae53SSteven Whitehouse rv = wait_for_completion_killable(&sdp->sd_locking_init);
5763942ae53SSteven Whitehouse if (rv)
5773942ae53SSteven Whitehouse return rv;
578ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin);
579ba6e9364SSteven Whitehouse rv = -EINVAL;
580ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
581ba6e9364SSteven Whitehouse goto out;
582ba6e9364SSteven Whitehouse rv = -EBUSY;
583feb47ca9SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)
584ba6e9364SSteven Whitehouse goto out;
585feb47ca9SSteven Whitehouse rv = 0;
586feb47ca9SSteven Whitehouse if (sdp->sd_args.ar_spectator && jid > 0)
587feb47ca9SSteven Whitehouse rv = jid = -EINVAL;
588ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_jid = jid;
589feb47ca9SSteven Whitehouse clear_bit(SDF_NOJOURNALID, &sdp->sd_flags);
5904e857c58SPeter Zijlstra smp_mb__after_atomic();
591ba6e9364SSteven Whitehouse wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID);
592ba6e9364SSteven Whitehouse out:
593ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin);
594ba6e9364SSteven Whitehouse return rv ? rv : len;
595ba6e9364SSteven Whitehouse }
596ba6e9364SSteven Whitehouse
597f057f6cdSSteven Whitehouse #define GDLM_ATTR(_name,_mode,_show,_store) \
59848c2b613SSteven Whitehouse static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store)
599f057f6cdSSteven Whitehouse
600f057f6cdSSteven Whitehouse GDLM_ATTR(proto_name, 0444, proto_name_show, NULL);
601f057f6cdSSteven Whitehouse GDLM_ATTR(block, 0644, block_show, block_store);
602fd95e81cSSteven Whitehouse GDLM_ATTR(withdraw, 0644, wdack_show, wdack_store);
603ba6e9364SSteven Whitehouse GDLM_ATTR(jid, 0644, jid_show, jid_store);
604ba6e9364SSteven Whitehouse GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store);
605f057f6cdSSteven Whitehouse GDLM_ATTR(first_done, 0444, first_done_show, NULL);
606d7e623daSSteven Whitehouse GDLM_ATTR(recover, 0600, NULL, recover_store);
607f057f6cdSSteven Whitehouse GDLM_ATTR(recover_done, 0444, recover_done_show, NULL);
608f057f6cdSSteven Whitehouse GDLM_ATTR(recover_status, 0444, recover_status_show, NULL);
609f057f6cdSSteven Whitehouse
610f057f6cdSSteven Whitehouse static struct attribute *lock_module_attrs[] = {
611f057f6cdSSteven Whitehouse &gdlm_attr_proto_name.attr,
612f057f6cdSSteven Whitehouse &gdlm_attr_block.attr,
613f057f6cdSSteven Whitehouse &gdlm_attr_withdraw.attr,
614e1b28aabSSteven Whitehouse &gdlm_attr_jid.attr,
615f057f6cdSSteven Whitehouse &gdlm_attr_first.attr,
616f057f6cdSSteven Whitehouse &gdlm_attr_first_done.attr,
617f057f6cdSSteven Whitehouse &gdlm_attr_recover.attr,
618f057f6cdSSteven Whitehouse &gdlm_attr_recover_done.attr,
619f057f6cdSSteven Whitehouse &gdlm_attr_recover_status.attr,
620ea67eedbSSteven Whitehouse NULL,
621b3b94faaSDavid Teigland };
622b3b94faaSDavid Teigland
623b3b94faaSDavid Teigland /*
624b3b94faaSDavid Teigland * get and set struct gfs2_tune fields
625b3b94faaSDavid Teigland */
626b3b94faaSDavid Teigland
quota_scale_show(struct gfs2_sbd * sdp,char * buf)627b3b94faaSDavid Teigland static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf)
628b3b94faaSDavid Teigland {
6293204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u %u\n",
6303204a6c0SDavid Teigland sdp->sd_tune.gt_quota_scale_num,
631b3b94faaSDavid Teigland sdp->sd_tune.gt_quota_scale_den);
632b3b94faaSDavid Teigland }
633b3b94faaSDavid Teigland
quota_scale_store(struct gfs2_sbd * sdp,const char * buf,size_t len)634b3b94faaSDavid Teigland static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf,
635b3b94faaSDavid Teigland size_t len)
636b3b94faaSDavid Teigland {
637b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune;
638b3b94faaSDavid Teigland unsigned int x, y;
639b3b94faaSDavid Teigland
640b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN))
64141735818SZhao Hongjiang return -EPERM;
642b3b94faaSDavid Teigland
643b3b94faaSDavid Teigland if (sscanf(buf, "%u %u", &x, &y) != 2 || !y)
644b3b94faaSDavid Teigland return -EINVAL;
645b3b94faaSDavid Teigland
646b3b94faaSDavid Teigland spin_lock(>->gt_spin);
647b3b94faaSDavid Teigland gt->gt_quota_scale_num = x;
648b3b94faaSDavid Teigland gt->gt_quota_scale_den = y;
649b3b94faaSDavid Teigland spin_unlock(>->gt_spin);
650b3b94faaSDavid Teigland return len;
651b3b94faaSDavid Teigland }
652b3b94faaSDavid Teigland
tune_set(struct gfs2_sbd * sdp,unsigned int * field,int check_zero,const char * buf,size_t len)653b3b94faaSDavid Teigland static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field,
654b3b94faaSDavid Teigland int check_zero, const char *buf, size_t len)
655b3b94faaSDavid Teigland {
656b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune;
657b3b94faaSDavid Teigland unsigned int x;
658e50ead48SFabian Frederick int error;
659b3b94faaSDavid Teigland
660b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN))
66141735818SZhao Hongjiang return -EPERM;
662b3b94faaSDavid Teigland
663e50ead48SFabian Frederick error = kstrtouint(buf, 0, &x);
664e50ead48SFabian Frederick if (error)
665e50ead48SFabian Frederick return error;
666b3b94faaSDavid Teigland
667b3b94faaSDavid Teigland if (check_zero && !x)
668b3b94faaSDavid Teigland return -EINVAL;
669b3b94faaSDavid Teigland
670b3b94faaSDavid Teigland spin_lock(>->gt_spin);
671b3b94faaSDavid Teigland *field = x;
672b3b94faaSDavid Teigland spin_unlock(>->gt_spin);
673b3b94faaSDavid Teigland return len;
674b3b94faaSDavid Teigland }
675b3b94faaSDavid Teigland
676b3b94faaSDavid Teigland #define TUNE_ATTR_3(name, show, store) \
67748c2b613SSteven Whitehouse static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store)
678b3b94faaSDavid Teigland
679b3b94faaSDavid Teigland #define TUNE_ATTR_2(name, store) \
680b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \
681b3b94faaSDavid Teigland { \
6823204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \
683b3b94faaSDavid Teigland } \
684b3b94faaSDavid Teigland TUNE_ATTR_3(name, name##_show, store)
685b3b94faaSDavid Teigland
686b3b94faaSDavid Teigland #define TUNE_ATTR(name, check_zero) \
687b3b94faaSDavid Teigland static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
688b3b94faaSDavid Teigland { \
689b3b94faaSDavid Teigland return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \
690b3b94faaSDavid Teigland } \
691b3b94faaSDavid Teigland TUNE_ATTR_2(name, name##_store)
692b3b94faaSDavid Teigland
693b3b94faaSDavid Teigland TUNE_ATTR(quota_warn_period, 0);
694b3b94faaSDavid Teigland TUNE_ATTR(quota_quantum, 0);
695b3b94faaSDavid Teigland TUNE_ATTR(max_readahead, 0);
696b3b94faaSDavid Teigland TUNE_ATTR(complain_secs, 0);
697b3b94faaSDavid Teigland TUNE_ATTR(statfs_slow, 0);
698b3b94faaSDavid Teigland TUNE_ATTR(new_files_jdata, 0);
699b3b94faaSDavid Teigland TUNE_ATTR(statfs_quantum, 1);
700b3b94faaSDavid Teigland TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
701b3b94faaSDavid Teigland
702b3b94faaSDavid Teigland static struct attribute *tune_attrs[] = {
703b3b94faaSDavid Teigland &tune_attr_quota_warn_period.attr,
704b3b94faaSDavid Teigland &tune_attr_quota_quantum.attr,
705b3b94faaSDavid Teigland &tune_attr_max_readahead.attr,
706b3b94faaSDavid Teigland &tune_attr_complain_secs.attr,
707b3b94faaSDavid Teigland &tune_attr_statfs_slow.attr,
708b3b94faaSDavid Teigland &tune_attr_statfs_quantum.attr,
709b3b94faaSDavid Teigland &tune_attr_quota_scale.attr,
710b3b94faaSDavid Teigland &tune_attr_new_files_jdata.attr,
711ea67eedbSSteven Whitehouse NULL,
712b3b94faaSDavid Teigland };
713b3b94faaSDavid Teigland
71429695254SArvind Yadav static const struct attribute_group tune_group = {
715b3b94faaSDavid Teigland .name = "tune",
716ea67eedbSSteven Whitehouse .attrs = tune_attrs,
717b3b94faaSDavid Teigland };
718b3b94faaSDavid Teigland
71929695254SArvind Yadav static const struct attribute_group lock_module_group = {
720f057f6cdSSteven Whitehouse .name = "lock_module",
721f057f6cdSSteven Whitehouse .attrs = lock_module_attrs,
722f057f6cdSSteven Whitehouse };
723f057f6cdSSteven Whitehouse
gfs2_sys_fs_add(struct gfs2_sbd * sdp)724b3b94faaSDavid Teigland int gfs2_sys_fs_add(struct gfs2_sbd *sdp)
725b3b94faaSDavid Teigland {
726440d6da2SSteven Whitehouse struct super_block *sb = sdp->sd_vfs;
727b3b94faaSDavid Teigland int error;
728440d6da2SSteven Whitehouse char ro[20];
729440d6da2SSteven Whitehouse char spectator[20];
730440d6da2SSteven Whitehouse char *envp[] = { ro, spectator, NULL };
731440d6da2SSteven Whitehouse
732bc98a42cSDavid Howells sprintf(ro, "RDONLY=%d", sb_rdonly(sb));
733440d6da2SSteven Whitehouse sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0);
734b3b94faaSDavid Teigland
735c2a04b02SJamie Iles init_completion(&sdp->sd_kobj_unregister);
7369bec101aSGreg Kroah-Hartman sdp->sd_kobj.kset = gfs2_kset;
737901195edSGreg Kroah-Hartman error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL,
738901195edSGreg Kroah-Hartman "%s", sdp->sd_table_name);
739b3b94faaSDavid Teigland if (error)
7400d515210SBob Peterson goto fail_reg;
741b3b94faaSDavid Teigland
742b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &tune_group);
743b3b94faaSDavid Teigland if (error)
744f6eb5349SSteven Whitehouse goto fail_reg;
745b3b94faaSDavid Teigland
746f057f6cdSSteven Whitehouse error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group);
747f057f6cdSSteven Whitehouse if (error)
748f057f6cdSSteven Whitehouse goto fail_tune;
749f057f6cdSSteven Whitehouse
75031e54b01SSteven Whitehouse error = sysfs_create_link(&sdp->sd_kobj,
75131e54b01SSteven Whitehouse &disk_to_dev(sb->s_bdev->bd_disk)->kobj,
75231e54b01SSteven Whitehouse "device");
75331e54b01SSteven Whitehouse if (error)
75431e54b01SSteven Whitehouse goto fail_lock_module;
75531e54b01SSteven Whitehouse
756440d6da2SSteven Whitehouse kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp);
757b3b94faaSDavid Teigland return 0;
758b3b94faaSDavid Teigland
75931e54b01SSteven Whitehouse fail_lock_module:
76031e54b01SSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);
761f057f6cdSSteven Whitehouse fail_tune:
762f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &tune_group);
763b3b94faaSDavid Teigland fail_reg:
764af38816eSAndreas Gruenbacher fs_err(sdp, "error %d adding sysfs files\n", error);
7650d515210SBob Peterson kobject_put(&sdp->sd_kobj);
766c2a04b02SJamie Iles wait_for_completion(&sdp->sd_kobj_unregister);
7670d515210SBob Peterson sb->s_fs_info = NULL;
768b3b94faaSDavid Teigland return error;
769b3b94faaSDavid Teigland }
770b3b94faaSDavid Teigland
gfs2_sys_fs_del(struct gfs2_sbd * sdp)771b3b94faaSDavid Teigland void gfs2_sys_fs_del(struct gfs2_sbd *sdp)
772b3b94faaSDavid Teigland {
77331e54b01SSteven Whitehouse sysfs_remove_link(&sdp->sd_kobj, "device");
774b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &tune_group);
775f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);
776197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj);
777c2a04b02SJamie Iles wait_for_completion(&sdp->sd_kobj_unregister);
778b3b94faaSDavid Teigland }
779b3b94faaSDavid Teigland
gfs2_uevent(const struct kobject * kobj,struct kobj_uevent_env * env)78056d5f362SGreg Kroah-Hartman static int gfs2_uevent(const struct kobject *kobj, struct kobj_uevent_env *env)
781fdd1062eSSteven Whitehouse {
78256d5f362SGreg Kroah-Hartman const struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
78356d5f362SGreg Kroah-Hartman const struct super_block *s = sdp->sd_vfs;
78402e3cc70SSteven Whitehouse
785fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name);
786fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name);
787ba6e9364SSteven Whitehouse if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags))
788feb47ca9SSteven Whitehouse add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid);
78985787090SChristoph Hellwig if (!uuid_is_null(&s->s_uuid))
79085787090SChristoph Hellwig add_uevent_var(env, "UUID=%pUB", &s->s_uuid);
791fdd1062eSSteven Whitehouse return 0;
792fdd1062eSSteven Whitehouse }
793fdd1062eSSteven Whitehouse
7949cd43611SEmese Revfy static const struct kset_uevent_ops gfs2_uevent_ops = {
795fdd1062eSSteven Whitehouse .uevent = gfs2_uevent,
796fdd1062eSSteven Whitehouse };
797fdd1062eSSteven Whitehouse
gfs2_sys_init(void)798b3b94faaSDavid Teigland int gfs2_sys_init(void)
799b3b94faaSDavid Teigland {
800fdd1062eSSteven Whitehouse gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj);
8019bec101aSGreg Kroah-Hartman if (!gfs2_kset)
8029bec101aSGreg Kroah-Hartman return -ENOMEM;
8039bec101aSGreg Kroah-Hartman return 0;
804b3b94faaSDavid Teigland }
805b3b94faaSDavid Teigland
gfs2_sys_uninit(void)806b3b94faaSDavid Teigland void gfs2_sys_uninit(void)
807b3b94faaSDavid Teigland {
8089bec101aSGreg Kroah-Hartman kset_unregister(gfs2_kset);
809b3b94faaSDavid Teigland }
810b3b94faaSDavid Teigland
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