1b3b94faaSDavid Teigland /* 2b3b94faaSDavid Teigland * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 33a8a9a10SSteven Whitehouse * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 4b3b94faaSDavid Teigland * 5b3b94faaSDavid Teigland * This copyrighted material is made available to anyone wishing to use, 6b3b94faaSDavid Teigland * modify, copy, or redistribute it subject to the terms and conditions 7e9fc2aa0SSteven Whitehouse * of the GNU General Public License version 2. 8b3b94faaSDavid Teigland */ 9b3b94faaSDavid Teigland 10d77d1b58SJoe Perches #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 11d77d1b58SJoe Perches 12b3b94faaSDavid Teigland #include <linux/sched.h> 13b3b94faaSDavid Teigland #include <linux/spinlock.h> 14b3b94faaSDavid Teigland #include <linux/completion.h> 15b3b94faaSDavid Teigland #include <linux/buffer_head.h> 16b3b94faaSDavid Teigland #include <linux/module.h> 17b3b94faaSDavid Teigland #include <linux/kobject.h> 18b3b94faaSDavid Teigland #include <asm/uaccess.h> 19f057f6cdSSteven Whitehouse #include <linux/gfs2_ondisk.h> 2031e54b01SSteven Whitehouse #include <linux/genhd.h> 21b3b94faaSDavid Teigland 22b3b94faaSDavid Teigland #include "gfs2.h" 235c676f6dSSteven Whitehouse #include "incore.h" 24b3b94faaSDavid Teigland #include "sys.h" 25b3b94faaSDavid Teigland #include "super.h" 26b3b94faaSDavid Teigland #include "glock.h" 27b3b94faaSDavid Teigland #include "quota.h" 285c676f6dSSteven Whitehouse #include "util.h" 2964d576baSSteven Whitehouse #include "glops.h" 306ecd7c2dSTejun Heo #include "recovery.h" 31b3b94faaSDavid Teigland 3248c2b613SSteven Whitehouse struct gfs2_attr { 3348c2b613SSteven Whitehouse struct attribute attr; 3448c2b613SSteven Whitehouse ssize_t (*show)(struct gfs2_sbd *, char *); 3548c2b613SSteven Whitehouse ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); 3648c2b613SSteven Whitehouse }; 3748c2b613SSteven Whitehouse 3848c2b613SSteven Whitehouse static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, 3948c2b613SSteven Whitehouse char *buf) 4048c2b613SSteven Whitehouse { 4148c2b613SSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 4248c2b613SSteven Whitehouse struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); 4348c2b613SSteven Whitehouse return a->show ? a->show(sdp, buf) : 0; 4448c2b613SSteven Whitehouse } 4548c2b613SSteven Whitehouse 4648c2b613SSteven Whitehouse static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, 4748c2b613SSteven Whitehouse const char *buf, size_t len) 4848c2b613SSteven Whitehouse { 4948c2b613SSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 5048c2b613SSteven Whitehouse struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); 5148c2b613SSteven Whitehouse return a->store ? a->store(sdp, buf, len) : len; 5248c2b613SSteven Whitehouse } 5348c2b613SSteven Whitehouse 5452cf25d0SEmese Revfy static const struct sysfs_ops gfs2_attr_ops = { 5548c2b613SSteven Whitehouse .show = gfs2_attr_show, 5648c2b613SSteven Whitehouse .store = gfs2_attr_store, 5748c2b613SSteven Whitehouse }; 5848c2b613SSteven Whitehouse 5948c2b613SSteven Whitehouse 6048c2b613SSteven Whitehouse static struct kset *gfs2_kset; 6148c2b613SSteven Whitehouse 62b3b94faaSDavid Teigland static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) 63b3b94faaSDavid Teigland { 64c7227e46SBob Peterson return snprintf(buf, PAGE_SIZE, "%u:%u\n", 65c7227e46SBob Peterson MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev)); 66b3b94faaSDavid Teigland } 67b3b94faaSDavid Teigland 68b3b94faaSDavid Teigland static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) 69b3b94faaSDavid Teigland { 703204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname); 71b3b94faaSDavid Teigland } 72b3b94faaSDavid Teigland 7302e3cc70SSteven Whitehouse static int gfs2_uuid_valid(const u8 *uuid) 7402e3cc70SSteven Whitehouse { 7502e3cc70SSteven Whitehouse int i; 7602e3cc70SSteven Whitehouse 7702e3cc70SSteven Whitehouse for (i = 0; i < 16; i++) { 7802e3cc70SSteven Whitehouse if (uuid[i]) 7902e3cc70SSteven Whitehouse return 1; 8002e3cc70SSteven Whitehouse } 8102e3cc70SSteven Whitehouse return 0; 8202e3cc70SSteven Whitehouse } 8302e3cc70SSteven Whitehouse 8402e3cc70SSteven Whitehouse static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf) 8502e3cc70SSteven Whitehouse { 8632e471efSSteven Whitehouse struct super_block *s = sdp->sd_vfs; 8732e471efSSteven Whitehouse const u8 *uuid = s->s_uuid; 8802e3cc70SSteven Whitehouse buf[0] = '\0'; 8902e3cc70SSteven Whitehouse if (!gfs2_uuid_valid(uuid)) 9002e3cc70SSteven Whitehouse return 0; 91f0b34ae6SJoe Perches return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid); 9202e3cc70SSteven Whitehouse } 9302e3cc70SSteven Whitehouse 94b3b94faaSDavid Teigland static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) 95b3b94faaSDavid Teigland { 96d564053fSSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 97d564053fSSteven Whitehouse int frozen = (sb->s_writers.frozen == SB_UNFROZEN) ? 0 : 1; 98b3b94faaSDavid Teigland 993566c964Salex chen return snprintf(buf, PAGE_SIZE, "%d\n", frozen); 100b3b94faaSDavid Teigland } 101b3b94faaSDavid Teigland 102b3b94faaSDavid Teigland static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 103b3b94faaSDavid Teigland { 104*e50ead48SFabian Frederick int error, n; 105*e50ead48SFabian Frederick 106*e50ead48SFabian Frederick error = kstrtoint(buf, 0, &n); 107*e50ead48SFabian Frederick if (error) 108*e50ead48SFabian Frederick return error; 109b3b94faaSDavid Teigland 110b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 11141735818SZhao Hongjiang return -EPERM; 112b3b94faaSDavid Teigland 113b3b94faaSDavid Teigland switch (n) { 114b3b94faaSDavid Teigland case 0: 115d564053fSSteven Whitehouse error = thaw_super(sdp->sd_vfs); 116b3b94faaSDavid Teigland break; 117b3b94faaSDavid Teigland case 1: 118d564053fSSteven Whitehouse error = freeze_super(sdp->sd_vfs); 119b3b94faaSDavid Teigland break; 120b3b94faaSDavid Teigland default: 121d564053fSSteven Whitehouse return -EINVAL; 122b3b94faaSDavid Teigland } 123b3b94faaSDavid Teigland 124d564053fSSteven Whitehouse if (error) { 125b3b94faaSDavid Teigland fs_warn(sdp, "freeze %d error %d", n, error); 126d564053fSSteven Whitehouse return error; 127d564053fSSteven Whitehouse } 128b3b94faaSDavid Teigland 129d564053fSSteven Whitehouse return len; 130b3b94faaSDavid Teigland } 131b3b94faaSDavid Teigland 132b3b94faaSDavid Teigland static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) 133b3b94faaSDavid Teigland { 134b3b94faaSDavid Teigland unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); 1353204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", b); 136b3b94faaSDavid Teigland } 137b3b94faaSDavid Teigland 138b3b94faaSDavid Teigland static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 139b3b94faaSDavid Teigland { 140*e50ead48SFabian Frederick int error, val; 141*e50ead48SFabian Frederick 142b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 14341735818SZhao Hongjiang return -EPERM; 144b3b94faaSDavid Teigland 145*e50ead48SFabian Frederick error = kstrtoint(buf, 0, &val); 146*e50ead48SFabian Frederick if (error) 147*e50ead48SFabian Frederick return error; 148*e50ead48SFabian Frederick 149*e50ead48SFabian Frederick if (val != 1) 150b3b94faaSDavid Teigland return -EINVAL; 151b3b94faaSDavid Teigland 152cb94eb06SJoe Perches gfs2_lm_withdraw(sdp, "withdrawing from cluster at user's request\n"); 153cb94eb06SJoe Perches 154b3b94faaSDavid Teigland return len; 155b3b94faaSDavid Teigland } 156b3b94faaSDavid Teigland 157b3b94faaSDavid Teigland static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, 158b3b94faaSDavid Teigland size_t len) 159b3b94faaSDavid Teigland { 160*e50ead48SFabian Frederick int error, val; 161*e50ead48SFabian Frederick 162b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 16341735818SZhao Hongjiang return -EPERM; 164b3b94faaSDavid Teigland 165*e50ead48SFabian Frederick error = kstrtoint(buf, 0, &val); 166*e50ead48SFabian Frederick if (error) 167*e50ead48SFabian Frederick return error; 168*e50ead48SFabian Frederick 169*e50ead48SFabian Frederick if (val != 1) 170b3b94faaSDavid Teigland return -EINVAL; 171b3b94faaSDavid Teigland 1728c42d637SSteven Whitehouse gfs2_statfs_sync(sdp->sd_vfs, 0); 173b3b94faaSDavid Teigland return len; 174b3b94faaSDavid Teigland } 175b3b94faaSDavid Teigland 176b3b94faaSDavid Teigland static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, 177b3b94faaSDavid Teigland size_t len) 178b3b94faaSDavid Teigland { 179*e50ead48SFabian Frederick int error, val; 180*e50ead48SFabian Frederick 181b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 18241735818SZhao Hongjiang return -EPERM; 183b3b94faaSDavid Teigland 184*e50ead48SFabian Frederick error = kstrtoint(buf, 0, &val); 185*e50ead48SFabian Frederick if (error) 186*e50ead48SFabian Frederick return error; 187*e50ead48SFabian Frederick 188*e50ead48SFabian Frederick if (val != 1) 189b3b94faaSDavid Teigland return -EINVAL; 190b3b94faaSDavid Teigland 191ceed1723SJan Kara gfs2_quota_sync(sdp->sd_vfs, 0); 192b3b94faaSDavid Teigland return len; 193b3b94faaSDavid Teigland } 194b3b94faaSDavid Teigland 195b3b94faaSDavid Teigland static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, 196b3b94faaSDavid Teigland size_t len) 197b3b94faaSDavid Teigland { 198ed87dabcSEric W. Biederman struct kqid qid; 199ea762338SSteven Whitehouse int error; 200cd915493SSteven Whitehouse u32 id; 201b3b94faaSDavid Teigland 202b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 20341735818SZhao Hongjiang return -EPERM; 204b3b94faaSDavid Teigland 205*e50ead48SFabian Frederick error = kstrtou32(buf, 0, &id); 206*e50ead48SFabian Frederick if (error) 207*e50ead48SFabian Frederick return error; 208b3b94faaSDavid Teigland 209ed87dabcSEric W. Biederman qid = make_kqid(current_user_ns(), USRQUOTA, id); 210ed87dabcSEric W. Biederman if (!qid_valid(qid)) 211ed87dabcSEric W. Biederman return -EINVAL; 212ed87dabcSEric W. Biederman 213ed87dabcSEric W. Biederman error = gfs2_quota_refresh(sdp, qid); 214ea762338SSteven Whitehouse return error ? error : len; 215b3b94faaSDavid Teigland } 216b3b94faaSDavid Teigland 217b3b94faaSDavid Teigland static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, 218b3b94faaSDavid Teigland size_t len) 219b3b94faaSDavid Teigland { 220ed87dabcSEric W. Biederman struct kqid qid; 221ea762338SSteven Whitehouse int error; 222cd915493SSteven Whitehouse u32 id; 223b3b94faaSDavid Teigland 224b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 22541735818SZhao Hongjiang return -EPERM; 226b3b94faaSDavid Teigland 227*e50ead48SFabian Frederick error = kstrtou32(buf, 0, &id); 228*e50ead48SFabian Frederick if (error) 229*e50ead48SFabian Frederick return error; 230b3b94faaSDavid Teigland 231ed87dabcSEric W. Biederman qid = make_kqid(current_user_ns(), GRPQUOTA, id); 232ed87dabcSEric W. Biederman if (!qid_valid(qid)) 233ed87dabcSEric W. Biederman return -EINVAL; 234ed87dabcSEric W. Biederman 235ed87dabcSEric W. Biederman error = gfs2_quota_refresh(sdp, qid); 236ea762338SSteven Whitehouse return error ? error : len; 237b3b94faaSDavid Teigland } 238b3b94faaSDavid Teigland 23964d576baSSteven Whitehouse static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 24064d576baSSteven Whitehouse { 24164d576baSSteven Whitehouse struct gfs2_glock *gl; 24264d576baSSteven Whitehouse const struct gfs2_glock_operations *glops; 24364d576baSSteven Whitehouse unsigned int glmode; 24464d576baSSteven Whitehouse unsigned int gltype; 24564d576baSSteven Whitehouse unsigned long long glnum; 24664d576baSSteven Whitehouse char mode[16]; 24764d576baSSteven Whitehouse int rv; 24864d576baSSteven Whitehouse 24964d576baSSteven Whitehouse if (!capable(CAP_SYS_ADMIN)) 25041735818SZhao Hongjiang return -EPERM; 25164d576baSSteven Whitehouse 25264d576baSSteven Whitehouse rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, 25364d576baSSteven Whitehouse mode); 25464d576baSSteven Whitehouse if (rv != 3) 25564d576baSSteven Whitehouse return -EINVAL; 25664d576baSSteven Whitehouse 25764d576baSSteven Whitehouse if (strcmp(mode, "EX") == 0) 25864d576baSSteven Whitehouse glmode = LM_ST_UNLOCKED; 25964d576baSSteven Whitehouse else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) 26064d576baSSteven Whitehouse glmode = LM_ST_DEFERRED; 26164d576baSSteven Whitehouse else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) 26264d576baSSteven Whitehouse glmode = LM_ST_SHARED; 26364d576baSSteven Whitehouse else 26464d576baSSteven Whitehouse return -EINVAL; 26564d576baSSteven Whitehouse 26664d576baSSteven Whitehouse if (gltype > LM_TYPE_JOURNAL) 26764d576baSSteven Whitehouse return -EINVAL; 26824972557SBenjamin Marzinski if (gltype == LM_TYPE_NONDISK && glnum == GFS2_FREEZE_LOCK) 26924972557SBenjamin Marzinski glops = &gfs2_freeze_glops; 27013466985SSteven Whitehouse else 27164d576baSSteven Whitehouse glops = gfs2_glops_list[gltype]; 27264d576baSSteven Whitehouse if (glops == NULL) 27364d576baSSteven Whitehouse return -EINVAL; 2746a99be5dSSteven Whitehouse if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) 275913a71d2SSteven Whitehouse fs_info(sdp, "demote interface used\n"); 27664d576baSSteven Whitehouse rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); 27764d576baSSteven Whitehouse if (rv) 27864d576baSSteven Whitehouse return rv; 27964d576baSSteven Whitehouse gfs2_glock_cb(gl, glmode); 28064d576baSSteven Whitehouse gfs2_glock_put(gl); 28164d576baSSteven Whitehouse return len; 28264d576baSSteven Whitehouse } 28364d576baSSteven Whitehouse 284b3b94faaSDavid Teigland 285b3b94faaSDavid Teigland #define GFS2_ATTR(name, mode, show, store) \ 286b3b94faaSDavid Teigland static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) 287b3b94faaSDavid Teigland 288b3b94faaSDavid Teigland GFS2_ATTR(id, 0444, id_show, NULL); 289b3b94faaSDavid Teigland GFS2_ATTR(fsname, 0444, fsname_show, NULL); 29002e3cc70SSteven Whitehouse GFS2_ATTR(uuid, 0444, uuid_show, NULL); 291b3b94faaSDavid Teigland GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); 292b3b94faaSDavid Teigland GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 293b3b94faaSDavid Teigland GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); 294b3b94faaSDavid Teigland GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); 295b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); 296b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); 29764d576baSSteven Whitehouse GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); 298b3b94faaSDavid Teigland 299b3b94faaSDavid Teigland static struct attribute *gfs2_attrs[] = { 300b3b94faaSDavid Teigland &gfs2_attr_id.attr, 301b3b94faaSDavid Teigland &gfs2_attr_fsname.attr, 30202e3cc70SSteven Whitehouse &gfs2_attr_uuid.attr, 303b3b94faaSDavid Teigland &gfs2_attr_freeze.attr, 304b3b94faaSDavid Teigland &gfs2_attr_withdraw.attr, 305b3b94faaSDavid Teigland &gfs2_attr_statfs_sync.attr, 306b3b94faaSDavid Teigland &gfs2_attr_quota_sync.attr, 307b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_user.attr, 308b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_group.attr, 30964d576baSSteven Whitehouse &gfs2_attr_demote_rq.attr, 310b3b94faaSDavid Teigland NULL, 311b3b94faaSDavid Teigland }; 312b3b94faaSDavid Teigland 3130d515210SBob Peterson static void gfs2_sbd_release(struct kobject *kobj) 3140d515210SBob Peterson { 3150d515210SBob Peterson struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 3160d515210SBob Peterson 3170d515210SBob Peterson kfree(sdp); 3180d515210SBob Peterson } 3190d515210SBob Peterson 320b3b94faaSDavid Teigland static struct kobj_type gfs2_ktype = { 3210d515210SBob Peterson .release = gfs2_sbd_release, 322b3b94faaSDavid Teigland .default_attrs = gfs2_attrs, 323b3b94faaSDavid Teigland .sysfs_ops = &gfs2_attr_ops, 324b3b94faaSDavid Teigland }; 325b3b94faaSDavid Teigland 326f057f6cdSSteven Whitehouse 327f057f6cdSSteven Whitehouse /* 328f057f6cdSSteven Whitehouse * lock_module. Originally from lock_dlm 329f057f6cdSSteven Whitehouse */ 330f057f6cdSSteven Whitehouse 331f057f6cdSSteven Whitehouse static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) 332f057f6cdSSteven Whitehouse { 333f057f6cdSSteven Whitehouse const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; 334f057f6cdSSteven Whitehouse return sprintf(buf, "%s\n", ops->lm_proto_name); 335f057f6cdSSteven Whitehouse } 336f057f6cdSSteven Whitehouse 337f057f6cdSSteven Whitehouse static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) 338f057f6cdSSteven Whitehouse { 339f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 340f057f6cdSSteven Whitehouse ssize_t ret; 341f057f6cdSSteven Whitehouse int val = 0; 342f057f6cdSSteven Whitehouse 343e0c2a9aaSDavid Teigland if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags)) 344f057f6cdSSteven Whitehouse val = 1; 345f057f6cdSSteven Whitehouse ret = sprintf(buf, "%d\n", val); 346f057f6cdSSteven Whitehouse return ret; 347f057f6cdSSteven Whitehouse } 348f057f6cdSSteven Whitehouse 349f057f6cdSSteven Whitehouse static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 350f057f6cdSSteven Whitehouse { 351f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 352*e50ead48SFabian Frederick int ret, val; 353f057f6cdSSteven Whitehouse 354*e50ead48SFabian Frederick ret = kstrtoint(buf, 0, &val); 355*e50ead48SFabian Frederick if (ret) 356*e50ead48SFabian Frederick return ret; 357f057f6cdSSteven Whitehouse 358f057f6cdSSteven Whitehouse if (val == 1) 359e0c2a9aaSDavid Teigland set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); 360f057f6cdSSteven Whitehouse else if (val == 0) { 361e0c2a9aaSDavid Teigland clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); 3624e857c58SPeter Zijlstra smp_mb__after_atomic(); 363f057f6cdSSteven Whitehouse gfs2_glock_thaw(sdp); 364f057f6cdSSteven Whitehouse } else { 365*e50ead48SFabian Frederick return -EINVAL; 366f057f6cdSSteven Whitehouse } 367*e50ead48SFabian Frederick return len; 368f057f6cdSSteven Whitehouse } 369f057f6cdSSteven Whitehouse 370fd95e81cSSteven Whitehouse static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf) 371fd95e81cSSteven Whitehouse { 372fd95e81cSSteven Whitehouse int val = completion_done(&sdp->sd_wdack) ? 1 : 0; 373fd95e81cSSteven Whitehouse 374fd95e81cSSteven Whitehouse return sprintf(buf, "%d\n", val); 375fd95e81cSSteven Whitehouse } 376fd95e81cSSteven Whitehouse 377fd95e81cSSteven Whitehouse static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 378fd95e81cSSteven Whitehouse { 379*e50ead48SFabian Frederick int ret, val; 380fd95e81cSSteven Whitehouse 381*e50ead48SFabian Frederick ret = kstrtoint(buf, 0, &val); 382*e50ead48SFabian Frederick if (ret) 383*e50ead48SFabian Frederick return ret; 384fd95e81cSSteven Whitehouse 385fd95e81cSSteven Whitehouse if ((val == 1) && 386fd95e81cSSteven Whitehouse !strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm")) 387fd95e81cSSteven Whitehouse complete(&sdp->sd_wdack); 388fd95e81cSSteven Whitehouse else 389*e50ead48SFabian Frederick return -EINVAL; 390*e50ead48SFabian Frederick return len; 391fd95e81cSSteven Whitehouse } 392fd95e81cSSteven Whitehouse 393f057f6cdSSteven Whitehouse static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) 394f057f6cdSSteven Whitehouse { 395f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 396f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first); 397f057f6cdSSteven Whitehouse } 398f057f6cdSSteven Whitehouse 399ba6e9364SSteven Whitehouse static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 400ba6e9364SSteven Whitehouse { 401ba6e9364SSteven Whitehouse unsigned first; 402ba6e9364SSteven Whitehouse int rv; 403ba6e9364SSteven Whitehouse 404ba6e9364SSteven Whitehouse rv = sscanf(buf, "%u", &first); 405ba6e9364SSteven Whitehouse if (rv != 1 || first > 1) 406ba6e9364SSteven Whitehouse return -EINVAL; 4073942ae53SSteven Whitehouse rv = wait_for_completion_killable(&sdp->sd_locking_init); 4083942ae53SSteven Whitehouse if (rv) 4093942ae53SSteven Whitehouse return rv; 410ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 411ba6e9364SSteven Whitehouse rv = -EBUSY; 412ba6e9364SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 413ba6e9364SSteven Whitehouse goto out; 414ba6e9364SSteven Whitehouse rv = -EINVAL; 415ba6e9364SSteven Whitehouse if (sdp->sd_args.ar_spectator) 416ba6e9364SSteven Whitehouse goto out; 417ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 418ba6e9364SSteven Whitehouse goto out; 419ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_first = first; 420ba6e9364SSteven Whitehouse rv = 0; 421ba6e9364SSteven Whitehouse out: 422ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 423ba6e9364SSteven Whitehouse return rv ? rv : len; 424ba6e9364SSteven Whitehouse } 425ba6e9364SSteven Whitehouse 426f057f6cdSSteven Whitehouse static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) 427f057f6cdSSteven Whitehouse { 428f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 429e0c2a9aaSDavid Teigland return sprintf(buf, "%d\n", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags)); 430f057f6cdSSteven Whitehouse } 431f057f6cdSSteven Whitehouse 432e0c2a9aaSDavid Teigland int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid) 433f057f6cdSSteven Whitehouse { 434f057f6cdSSteven Whitehouse struct gfs2_jdesc *jd; 435fe64d517SSteven Whitehouse int rv; 436f057f6cdSSteven Whitehouse 4370e48e055SBob Peterson /* Wait for our primary journal to be initialized */ 4380e48e055SBob Peterson wait_for_completion(&sdp->sd_journal_ready); 4390e48e055SBob Peterson 440f057f6cdSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 441fe64d517SSteven Whitehouse rv = -EBUSY; 442fe64d517SSteven Whitehouse if (sdp->sd_jdesc->jd_jid == jid) 443fe64d517SSteven Whitehouse goto out; 444fe64d517SSteven Whitehouse rv = -ENOENT; 445f057f6cdSSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 446f057f6cdSSteven Whitehouse if (jd->jd_jid != jid) 447f057f6cdSSteven Whitehouse continue; 4486ecd7c2dSTejun Heo rv = gfs2_recover_journal(jd, false); 449f057f6cdSSteven Whitehouse break; 450f057f6cdSSteven Whitehouse } 451fe64d517SSteven Whitehouse out: 452f057f6cdSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 453e0c2a9aaSDavid Teigland return rv; 454e0c2a9aaSDavid Teigland } 455e0c2a9aaSDavid Teigland 456e0c2a9aaSDavid Teigland static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 457e0c2a9aaSDavid Teigland { 458e0c2a9aaSDavid Teigland unsigned jid; 459e0c2a9aaSDavid Teigland int rv; 460e0c2a9aaSDavid Teigland 461e0c2a9aaSDavid Teigland rv = sscanf(buf, "%u", &jid); 462e0c2a9aaSDavid Teigland if (rv != 1) 463e0c2a9aaSDavid Teigland return -EINVAL; 464e0c2a9aaSDavid Teigland 4651a058f52SDavid Teigland if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) { 4661a058f52SDavid Teigland rv = -ESHUTDOWN; 4671a058f52SDavid Teigland goto out; 4681a058f52SDavid Teigland } 469e0c2a9aaSDavid Teigland 4701a058f52SDavid Teigland rv = gfs2_recover_set(sdp, jid); 4711a058f52SDavid Teigland out: 472fe64d517SSteven Whitehouse return rv ? rv : len; 473f057f6cdSSteven Whitehouse } 474f057f6cdSSteven Whitehouse 475f057f6cdSSteven Whitehouse static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) 476f057f6cdSSteven Whitehouse { 477f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 478f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_done); 479f057f6cdSSteven Whitehouse } 480f057f6cdSSteven Whitehouse 481f057f6cdSSteven Whitehouse static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) 482f057f6cdSSteven Whitehouse { 483f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 484f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_status); 485f057f6cdSSteven Whitehouse } 486f057f6cdSSteven Whitehouse 487e1b28aabSSteven Whitehouse static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) 488e1b28aabSSteven Whitehouse { 489feb47ca9SSteven Whitehouse return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid); 490e1b28aabSSteven Whitehouse } 491e1b28aabSSteven Whitehouse 492ba6e9364SSteven Whitehouse static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 493ba6e9364SSteven Whitehouse { 494feb47ca9SSteven Whitehouse int jid; 495ba6e9364SSteven Whitehouse int rv; 496ba6e9364SSteven Whitehouse 497feb47ca9SSteven Whitehouse rv = sscanf(buf, "%d", &jid); 498ba6e9364SSteven Whitehouse if (rv != 1) 499ba6e9364SSteven Whitehouse return -EINVAL; 5003942ae53SSteven Whitehouse rv = wait_for_completion_killable(&sdp->sd_locking_init); 5013942ae53SSteven Whitehouse if (rv) 5023942ae53SSteven Whitehouse return rv; 503ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 504ba6e9364SSteven Whitehouse rv = -EINVAL; 505ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 506ba6e9364SSteven Whitehouse goto out; 507ba6e9364SSteven Whitehouse rv = -EBUSY; 508feb47ca9SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 509ba6e9364SSteven Whitehouse goto out; 510feb47ca9SSteven Whitehouse rv = 0; 511feb47ca9SSteven Whitehouse if (sdp->sd_args.ar_spectator && jid > 0) 512feb47ca9SSteven Whitehouse rv = jid = -EINVAL; 513ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_jid = jid; 514feb47ca9SSteven Whitehouse clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); 5154e857c58SPeter Zijlstra smp_mb__after_atomic(); 516ba6e9364SSteven Whitehouse wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); 517ba6e9364SSteven Whitehouse out: 518ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 519ba6e9364SSteven Whitehouse return rv ? rv : len; 520ba6e9364SSteven Whitehouse } 521ba6e9364SSteven Whitehouse 522f057f6cdSSteven Whitehouse #define GDLM_ATTR(_name,_mode,_show,_store) \ 52348c2b613SSteven Whitehouse static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) 524f057f6cdSSteven Whitehouse 525f057f6cdSSteven Whitehouse GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); 526f057f6cdSSteven Whitehouse GDLM_ATTR(block, 0644, block_show, block_store); 527fd95e81cSSteven Whitehouse GDLM_ATTR(withdraw, 0644, wdack_show, wdack_store); 528ba6e9364SSteven Whitehouse GDLM_ATTR(jid, 0644, jid_show, jid_store); 529ba6e9364SSteven Whitehouse GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store); 530f057f6cdSSteven Whitehouse GDLM_ATTR(first_done, 0444, first_done_show, NULL); 531d7e623daSSteven Whitehouse GDLM_ATTR(recover, 0600, NULL, recover_store); 532f057f6cdSSteven Whitehouse GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); 533f057f6cdSSteven Whitehouse GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); 534f057f6cdSSteven Whitehouse 535f057f6cdSSteven Whitehouse static struct attribute *lock_module_attrs[] = { 536f057f6cdSSteven Whitehouse &gdlm_attr_proto_name.attr, 537f057f6cdSSteven Whitehouse &gdlm_attr_block.attr, 538f057f6cdSSteven Whitehouse &gdlm_attr_withdraw.attr, 539e1b28aabSSteven Whitehouse &gdlm_attr_jid.attr, 540f057f6cdSSteven Whitehouse &gdlm_attr_first.attr, 541f057f6cdSSteven Whitehouse &gdlm_attr_first_done.attr, 542f057f6cdSSteven Whitehouse &gdlm_attr_recover.attr, 543f057f6cdSSteven Whitehouse &gdlm_attr_recover_done.attr, 544f057f6cdSSteven Whitehouse &gdlm_attr_recover_status.attr, 545ea67eedbSSteven Whitehouse NULL, 546b3b94faaSDavid Teigland }; 547b3b94faaSDavid Teigland 548b3b94faaSDavid Teigland /* 549b3b94faaSDavid Teigland * get and set struct gfs2_tune fields 550b3b94faaSDavid Teigland */ 551b3b94faaSDavid Teigland 552b3b94faaSDavid Teigland static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) 553b3b94faaSDavid Teigland { 5543204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u %u\n", 5553204a6c0SDavid Teigland sdp->sd_tune.gt_quota_scale_num, 556b3b94faaSDavid Teigland sdp->sd_tune.gt_quota_scale_den); 557b3b94faaSDavid Teigland } 558b3b94faaSDavid Teigland 559b3b94faaSDavid Teigland static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, 560b3b94faaSDavid Teigland size_t len) 561b3b94faaSDavid Teigland { 562b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 563b3b94faaSDavid Teigland unsigned int x, y; 564b3b94faaSDavid Teigland 565b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 56641735818SZhao Hongjiang return -EPERM; 567b3b94faaSDavid Teigland 568b3b94faaSDavid Teigland if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) 569b3b94faaSDavid Teigland return -EINVAL; 570b3b94faaSDavid Teigland 571b3b94faaSDavid Teigland spin_lock(>->gt_spin); 572b3b94faaSDavid Teigland gt->gt_quota_scale_num = x; 573b3b94faaSDavid Teigland gt->gt_quota_scale_den = y; 574b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 575b3b94faaSDavid Teigland return len; 576b3b94faaSDavid Teigland } 577b3b94faaSDavid Teigland 578b3b94faaSDavid Teigland static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, 579b3b94faaSDavid Teigland int check_zero, const char *buf, size_t len) 580b3b94faaSDavid Teigland { 581b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 582b3b94faaSDavid Teigland unsigned int x; 583*e50ead48SFabian Frederick int error; 584b3b94faaSDavid Teigland 585b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 58641735818SZhao Hongjiang return -EPERM; 587b3b94faaSDavid Teigland 588*e50ead48SFabian Frederick error = kstrtouint(buf, 0, &x); 589*e50ead48SFabian Frederick if (error) 590*e50ead48SFabian Frederick return error; 591b3b94faaSDavid Teigland 592b3b94faaSDavid Teigland if (check_zero && !x) 593b3b94faaSDavid Teigland return -EINVAL; 594b3b94faaSDavid Teigland 595b3b94faaSDavid Teigland spin_lock(>->gt_spin); 596b3b94faaSDavid Teigland *field = x; 597b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 598b3b94faaSDavid Teigland return len; 599b3b94faaSDavid Teigland } 600b3b94faaSDavid Teigland 601b3b94faaSDavid Teigland #define TUNE_ATTR_3(name, show, store) \ 60248c2b613SSteven Whitehouse static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) 603b3b94faaSDavid Teigland 604b3b94faaSDavid Teigland #define TUNE_ATTR_2(name, store) \ 605b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 606b3b94faaSDavid Teigland { \ 6073204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ 608b3b94faaSDavid Teigland } \ 609b3b94faaSDavid Teigland TUNE_ATTR_3(name, name##_show, store) 610b3b94faaSDavid Teigland 611b3b94faaSDavid Teigland #define TUNE_ATTR(name, check_zero) \ 612b3b94faaSDavid Teigland static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ 613b3b94faaSDavid Teigland { \ 614b3b94faaSDavid Teigland return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ 615b3b94faaSDavid Teigland } \ 616b3b94faaSDavid Teigland TUNE_ATTR_2(name, name##_store) 617b3b94faaSDavid Teigland 618b3b94faaSDavid Teigland TUNE_ATTR(quota_warn_period, 0); 619b3b94faaSDavid Teigland TUNE_ATTR(quota_quantum, 0); 620b3b94faaSDavid Teigland TUNE_ATTR(max_readahead, 0); 621b3b94faaSDavid Teigland TUNE_ATTR(complain_secs, 0); 622b3b94faaSDavid Teigland TUNE_ATTR(statfs_slow, 0); 623b3b94faaSDavid Teigland TUNE_ATTR(new_files_jdata, 0); 624b3b94faaSDavid Teigland TUNE_ATTR(statfs_quantum, 1); 625b3b94faaSDavid Teigland TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); 626b3b94faaSDavid Teigland 627b3b94faaSDavid Teigland static struct attribute *tune_attrs[] = { 628b3b94faaSDavid Teigland &tune_attr_quota_warn_period.attr, 629b3b94faaSDavid Teigland &tune_attr_quota_quantum.attr, 630b3b94faaSDavid Teigland &tune_attr_max_readahead.attr, 631b3b94faaSDavid Teigland &tune_attr_complain_secs.attr, 632b3b94faaSDavid Teigland &tune_attr_statfs_slow.attr, 633b3b94faaSDavid Teigland &tune_attr_statfs_quantum.attr, 634b3b94faaSDavid Teigland &tune_attr_quota_scale.attr, 635b3b94faaSDavid Teigland &tune_attr_new_files_jdata.attr, 636ea67eedbSSteven Whitehouse NULL, 637b3b94faaSDavid Teigland }; 638b3b94faaSDavid Teigland 639b3b94faaSDavid Teigland static struct attribute_group tune_group = { 640b3b94faaSDavid Teigland .name = "tune", 641ea67eedbSSteven Whitehouse .attrs = tune_attrs, 642b3b94faaSDavid Teigland }; 643b3b94faaSDavid Teigland 644f057f6cdSSteven Whitehouse static struct attribute_group lock_module_group = { 645f057f6cdSSteven Whitehouse .name = "lock_module", 646f057f6cdSSteven Whitehouse .attrs = lock_module_attrs, 647f057f6cdSSteven Whitehouse }; 648f057f6cdSSteven Whitehouse 649b3b94faaSDavid Teigland int gfs2_sys_fs_add(struct gfs2_sbd *sdp) 650b3b94faaSDavid Teigland { 651440d6da2SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 652b3b94faaSDavid Teigland int error; 653440d6da2SSteven Whitehouse char ro[20]; 654440d6da2SSteven Whitehouse char spectator[20]; 655440d6da2SSteven Whitehouse char *envp[] = { ro, spectator, NULL }; 6560d515210SBob Peterson int sysfs_frees_sdp = 0; 657440d6da2SSteven Whitehouse 658440d6da2SSteven Whitehouse sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); 659440d6da2SSteven Whitehouse sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); 660b3b94faaSDavid Teigland 6619bec101aSGreg Kroah-Hartman sdp->sd_kobj.kset = gfs2_kset; 662901195edSGreg Kroah-Hartman error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, 663901195edSGreg Kroah-Hartman "%s", sdp->sd_table_name); 664b3b94faaSDavid Teigland if (error) 6650d515210SBob Peterson goto fail_reg; 666b3b94faaSDavid Teigland 6670d515210SBob Peterson sysfs_frees_sdp = 1; /* Freeing sdp is now done by sysfs calling 6680d515210SBob Peterson function gfs2_sbd_release. */ 669b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &tune_group); 670b3b94faaSDavid Teigland if (error) 671f6eb5349SSteven Whitehouse goto fail_reg; 672b3b94faaSDavid Teigland 673f057f6cdSSteven Whitehouse error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); 674f057f6cdSSteven Whitehouse if (error) 675f057f6cdSSteven Whitehouse goto fail_tune; 676f057f6cdSSteven Whitehouse 67731e54b01SSteven Whitehouse error = sysfs_create_link(&sdp->sd_kobj, 67831e54b01SSteven Whitehouse &disk_to_dev(sb->s_bdev->bd_disk)->kobj, 67931e54b01SSteven Whitehouse "device"); 68031e54b01SSteven Whitehouse if (error) 68131e54b01SSteven Whitehouse goto fail_lock_module; 68231e54b01SSteven Whitehouse 683440d6da2SSteven Whitehouse kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); 684b3b94faaSDavid Teigland return 0; 685b3b94faaSDavid Teigland 68631e54b01SSteven Whitehouse fail_lock_module: 68731e54b01SSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 688f057f6cdSSteven Whitehouse fail_tune: 689f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &tune_group); 690b3b94faaSDavid Teigland fail_reg: 6910d515210SBob Peterson free_percpu(sdp->sd_lkstats); 69265952fb4SDavid Teigland fs_err(sdp, "error %d adding sysfs files", error); 6930d515210SBob Peterson if (sysfs_frees_sdp) 6940d515210SBob Peterson kobject_put(&sdp->sd_kobj); 6950d515210SBob Peterson else 6960d515210SBob Peterson kfree(sdp); 6970d515210SBob Peterson sb->s_fs_info = NULL; 698b3b94faaSDavid Teigland return error; 699b3b94faaSDavid Teigland } 700b3b94faaSDavid Teigland 701b3b94faaSDavid Teigland void gfs2_sys_fs_del(struct gfs2_sbd *sdp) 702b3b94faaSDavid Teigland { 70331e54b01SSteven Whitehouse sysfs_remove_link(&sdp->sd_kobj, "device"); 704b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &tune_group); 705f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 706197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 707b3b94faaSDavid Teigland } 708b3b94faaSDavid Teigland 709fdd1062eSSteven Whitehouse static int gfs2_uevent(struct kset *kset, struct kobject *kobj, 710fdd1062eSSteven Whitehouse struct kobj_uevent_env *env) 711fdd1062eSSteven Whitehouse { 712fdd1062eSSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 71332e471efSSteven Whitehouse struct super_block *s = sdp->sd_vfs; 71432e471efSSteven Whitehouse const u8 *uuid = s->s_uuid; 71502e3cc70SSteven Whitehouse 716fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); 717fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); 718ba6e9364SSteven Whitehouse if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags)) 719feb47ca9SSteven Whitehouse add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid); 720f0b34ae6SJoe Perches if (gfs2_uuid_valid(uuid)) 721f0b34ae6SJoe Perches add_uevent_var(env, "UUID=%pUB", uuid); 722fdd1062eSSteven Whitehouse return 0; 723fdd1062eSSteven Whitehouse } 724fdd1062eSSteven Whitehouse 7259cd43611SEmese Revfy static const struct kset_uevent_ops gfs2_uevent_ops = { 726fdd1062eSSteven Whitehouse .uevent = gfs2_uevent, 727fdd1062eSSteven Whitehouse }; 728fdd1062eSSteven Whitehouse 729b3b94faaSDavid Teigland int gfs2_sys_init(void) 730b3b94faaSDavid Teigland { 731fdd1062eSSteven Whitehouse gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); 7329bec101aSGreg Kroah-Hartman if (!gfs2_kset) 7339bec101aSGreg Kroah-Hartman return -ENOMEM; 7349bec101aSGreg Kroah-Hartman return 0; 735b3b94faaSDavid Teigland } 736b3b94faaSDavid Teigland 737b3b94faaSDavid Teigland void gfs2_sys_uninit(void) 738b3b94faaSDavid Teigland { 7399bec101aSGreg Kroah-Hartman kset_unregister(gfs2_kset); 740b3b94faaSDavid Teigland } 741b3b94faaSDavid Teigland 742