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 99d564053fSSteven Whitehouse return snprintf(buf, PAGE_SIZE, "%u\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 { 104d564053fSSteven Whitehouse int error; 105b3b94faaSDavid Teigland int n = simple_strtol(buf, NULL, 0); 106b3b94faaSDavid Teigland 107b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 10841735818SZhao Hongjiang return -EPERM; 109b3b94faaSDavid Teigland 110b3b94faaSDavid Teigland switch (n) { 111b3b94faaSDavid Teigland case 0: 112d564053fSSteven Whitehouse error = thaw_super(sdp->sd_vfs); 113b3b94faaSDavid Teigland break; 114b3b94faaSDavid Teigland case 1: 115d564053fSSteven Whitehouse error = freeze_super(sdp->sd_vfs); 116b3b94faaSDavid Teigland break; 117b3b94faaSDavid Teigland default: 118d564053fSSteven Whitehouse return -EINVAL; 119b3b94faaSDavid Teigland } 120b3b94faaSDavid Teigland 121d564053fSSteven Whitehouse if (error) { 122b3b94faaSDavid Teigland fs_warn(sdp, "freeze %d error %d", n, error); 123d564053fSSteven Whitehouse return error; 124d564053fSSteven Whitehouse } 125b3b94faaSDavid Teigland 126d564053fSSteven Whitehouse return len; 127b3b94faaSDavid Teigland } 128b3b94faaSDavid Teigland 129b3b94faaSDavid Teigland static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) 130b3b94faaSDavid Teigland { 131b3b94faaSDavid Teigland unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); 1323204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", b); 133b3b94faaSDavid Teigland } 134b3b94faaSDavid Teigland 135b3b94faaSDavid Teigland static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 136b3b94faaSDavid Teigland { 137b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 13841735818SZhao Hongjiang return -EPERM; 139b3b94faaSDavid Teigland 140b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 141b3b94faaSDavid Teigland return -EINVAL; 142b3b94faaSDavid Teigland 143*cb94eb06SJoe Perches gfs2_lm_withdraw(sdp, "withdrawing from cluster at user's request\n"); 144*cb94eb06SJoe Perches 145b3b94faaSDavid Teigland return len; 146b3b94faaSDavid Teigland } 147b3b94faaSDavid Teigland 148b3b94faaSDavid Teigland static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, 149b3b94faaSDavid Teigland size_t len) 150b3b94faaSDavid Teigland { 151b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 15241735818SZhao Hongjiang return -EPERM; 153b3b94faaSDavid Teigland 154b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 155b3b94faaSDavid Teigland return -EINVAL; 156b3b94faaSDavid Teigland 1578c42d637SSteven Whitehouse gfs2_statfs_sync(sdp->sd_vfs, 0); 158b3b94faaSDavid Teigland return len; 159b3b94faaSDavid Teigland } 160b3b94faaSDavid Teigland 161b3b94faaSDavid Teigland static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, 162b3b94faaSDavid Teigland size_t len) 163b3b94faaSDavid Teigland { 164b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 16541735818SZhao Hongjiang return -EPERM; 166b3b94faaSDavid Teigland 167b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 168b3b94faaSDavid Teigland return -EINVAL; 169b3b94faaSDavid Teigland 170ceed1723SJan Kara gfs2_quota_sync(sdp->sd_vfs, 0); 171b3b94faaSDavid Teigland return len; 172b3b94faaSDavid Teigland } 173b3b94faaSDavid Teigland 174b3b94faaSDavid Teigland static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, 175b3b94faaSDavid Teigland size_t len) 176b3b94faaSDavid Teigland { 177ed87dabcSEric W. Biederman struct kqid qid; 178ea762338SSteven Whitehouse int error; 179cd915493SSteven Whitehouse u32 id; 180b3b94faaSDavid Teigland 181b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 18241735818SZhao Hongjiang return -EPERM; 183b3b94faaSDavid Teigland 184b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 185b3b94faaSDavid Teigland 186ed87dabcSEric W. Biederman qid = make_kqid(current_user_ns(), USRQUOTA, id); 187ed87dabcSEric W. Biederman if (!qid_valid(qid)) 188ed87dabcSEric W. Biederman return -EINVAL; 189ed87dabcSEric W. Biederman 190ed87dabcSEric W. Biederman error = gfs2_quota_refresh(sdp, qid); 191ea762338SSteven Whitehouse return error ? error : len; 192b3b94faaSDavid Teigland } 193b3b94faaSDavid Teigland 194b3b94faaSDavid Teigland static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, 195b3b94faaSDavid Teigland size_t len) 196b3b94faaSDavid Teigland { 197ed87dabcSEric W. Biederman struct kqid qid; 198ea762338SSteven Whitehouse int error; 199cd915493SSteven Whitehouse u32 id; 200b3b94faaSDavid Teigland 201b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 20241735818SZhao Hongjiang return -EPERM; 203b3b94faaSDavid Teigland 204b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 205b3b94faaSDavid Teigland 206ed87dabcSEric W. Biederman qid = make_kqid(current_user_ns(), GRPQUOTA, id); 207ed87dabcSEric W. Biederman if (!qid_valid(qid)) 208ed87dabcSEric W. Biederman return -EINVAL; 209ed87dabcSEric W. Biederman 210ed87dabcSEric W. Biederman error = gfs2_quota_refresh(sdp, qid); 211ea762338SSteven Whitehouse return error ? error : len; 212b3b94faaSDavid Teigland } 213b3b94faaSDavid Teigland 21464d576baSSteven Whitehouse static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 21564d576baSSteven Whitehouse { 21664d576baSSteven Whitehouse struct gfs2_glock *gl; 21764d576baSSteven Whitehouse const struct gfs2_glock_operations *glops; 21864d576baSSteven Whitehouse unsigned int glmode; 21964d576baSSteven Whitehouse unsigned int gltype; 22064d576baSSteven Whitehouse unsigned long long glnum; 22164d576baSSteven Whitehouse char mode[16]; 22264d576baSSteven Whitehouse int rv; 22364d576baSSteven Whitehouse 22464d576baSSteven Whitehouse if (!capable(CAP_SYS_ADMIN)) 22541735818SZhao Hongjiang return -EPERM; 22664d576baSSteven Whitehouse 22764d576baSSteven Whitehouse rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, 22864d576baSSteven Whitehouse mode); 22964d576baSSteven Whitehouse if (rv != 3) 23064d576baSSteven Whitehouse return -EINVAL; 23164d576baSSteven Whitehouse 23264d576baSSteven Whitehouse if (strcmp(mode, "EX") == 0) 23364d576baSSteven Whitehouse glmode = LM_ST_UNLOCKED; 23464d576baSSteven Whitehouse else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) 23564d576baSSteven Whitehouse glmode = LM_ST_DEFERRED; 23664d576baSSteven Whitehouse else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) 23764d576baSSteven Whitehouse glmode = LM_ST_SHARED; 23864d576baSSteven Whitehouse else 23964d576baSSteven Whitehouse return -EINVAL; 24064d576baSSteven Whitehouse 24164d576baSSteven Whitehouse if (gltype > LM_TYPE_JOURNAL) 24264d576baSSteven Whitehouse return -EINVAL; 24313466985SSteven Whitehouse if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK) 24413466985SSteven Whitehouse glops = &gfs2_trans_glops; 24513466985SSteven Whitehouse else 24664d576baSSteven Whitehouse glops = gfs2_glops_list[gltype]; 24764d576baSSteven Whitehouse if (glops == NULL) 24864d576baSSteven Whitehouse return -EINVAL; 2496a99be5dSSteven Whitehouse if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) 250913a71d2SSteven Whitehouse fs_info(sdp, "demote interface used\n"); 25164d576baSSteven Whitehouse rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); 25264d576baSSteven Whitehouse if (rv) 25364d576baSSteven Whitehouse return rv; 25464d576baSSteven Whitehouse gfs2_glock_cb(gl, glmode); 25564d576baSSteven Whitehouse gfs2_glock_put(gl); 25664d576baSSteven Whitehouse return len; 25764d576baSSteven Whitehouse } 25864d576baSSteven Whitehouse 259b3b94faaSDavid Teigland 260b3b94faaSDavid Teigland #define GFS2_ATTR(name, mode, show, store) \ 261b3b94faaSDavid Teigland static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) 262b3b94faaSDavid Teigland 263b3b94faaSDavid Teigland GFS2_ATTR(id, 0444, id_show, NULL); 264b3b94faaSDavid Teigland GFS2_ATTR(fsname, 0444, fsname_show, NULL); 26502e3cc70SSteven Whitehouse GFS2_ATTR(uuid, 0444, uuid_show, NULL); 266b3b94faaSDavid Teigland GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); 267b3b94faaSDavid Teigland GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 268b3b94faaSDavid Teigland GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); 269b3b94faaSDavid Teigland GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); 270b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); 271b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); 27264d576baSSteven Whitehouse GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); 273b3b94faaSDavid Teigland 274b3b94faaSDavid Teigland static struct attribute *gfs2_attrs[] = { 275b3b94faaSDavid Teigland &gfs2_attr_id.attr, 276b3b94faaSDavid Teigland &gfs2_attr_fsname.attr, 27702e3cc70SSteven Whitehouse &gfs2_attr_uuid.attr, 278b3b94faaSDavid Teigland &gfs2_attr_freeze.attr, 279b3b94faaSDavid Teigland &gfs2_attr_withdraw.attr, 280b3b94faaSDavid Teigland &gfs2_attr_statfs_sync.attr, 281b3b94faaSDavid Teigland &gfs2_attr_quota_sync.attr, 282b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_user.attr, 283b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_group.attr, 28464d576baSSteven Whitehouse &gfs2_attr_demote_rq.attr, 285b3b94faaSDavid Teigland NULL, 286b3b94faaSDavid Teigland }; 287b3b94faaSDavid Teigland 2880d515210SBob Peterson static void gfs2_sbd_release(struct kobject *kobj) 2890d515210SBob Peterson { 2900d515210SBob Peterson struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 2910d515210SBob Peterson 2920d515210SBob Peterson kfree(sdp); 2930d515210SBob Peterson } 2940d515210SBob Peterson 295b3b94faaSDavid Teigland static struct kobj_type gfs2_ktype = { 2960d515210SBob Peterson .release = gfs2_sbd_release, 297b3b94faaSDavid Teigland .default_attrs = gfs2_attrs, 298b3b94faaSDavid Teigland .sysfs_ops = &gfs2_attr_ops, 299b3b94faaSDavid Teigland }; 300b3b94faaSDavid Teigland 301f057f6cdSSteven Whitehouse 302f057f6cdSSteven Whitehouse /* 303f057f6cdSSteven Whitehouse * lock_module. Originally from lock_dlm 304f057f6cdSSteven Whitehouse */ 305f057f6cdSSteven Whitehouse 306f057f6cdSSteven Whitehouse static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) 307f057f6cdSSteven Whitehouse { 308f057f6cdSSteven Whitehouse const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; 309f057f6cdSSteven Whitehouse return sprintf(buf, "%s\n", ops->lm_proto_name); 310f057f6cdSSteven Whitehouse } 311f057f6cdSSteven Whitehouse 312f057f6cdSSteven Whitehouse static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) 313f057f6cdSSteven Whitehouse { 314f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 315f057f6cdSSteven Whitehouse ssize_t ret; 316f057f6cdSSteven Whitehouse int val = 0; 317f057f6cdSSteven Whitehouse 318e0c2a9aaSDavid Teigland if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags)) 319f057f6cdSSteven Whitehouse val = 1; 320f057f6cdSSteven Whitehouse ret = sprintf(buf, "%d\n", val); 321f057f6cdSSteven Whitehouse return ret; 322f057f6cdSSteven Whitehouse } 323f057f6cdSSteven Whitehouse 324f057f6cdSSteven Whitehouse static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 325f057f6cdSSteven Whitehouse { 326f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 327f057f6cdSSteven Whitehouse ssize_t ret = len; 328f057f6cdSSteven Whitehouse int val; 329f057f6cdSSteven Whitehouse 330f057f6cdSSteven Whitehouse val = simple_strtol(buf, NULL, 0); 331f057f6cdSSteven Whitehouse 332f057f6cdSSteven Whitehouse if (val == 1) 333e0c2a9aaSDavid Teigland set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); 334f057f6cdSSteven Whitehouse else if (val == 0) { 335e0c2a9aaSDavid Teigland clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); 336f057f6cdSSteven Whitehouse smp_mb__after_clear_bit(); 337f057f6cdSSteven Whitehouse gfs2_glock_thaw(sdp); 338f057f6cdSSteven Whitehouse } else { 339f057f6cdSSteven Whitehouse ret = -EINVAL; 340f057f6cdSSteven Whitehouse } 341f057f6cdSSteven Whitehouse return ret; 342f057f6cdSSteven Whitehouse } 343f057f6cdSSteven Whitehouse 344fd95e81cSSteven Whitehouse static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf) 345fd95e81cSSteven Whitehouse { 346fd95e81cSSteven Whitehouse int val = completion_done(&sdp->sd_wdack) ? 1 : 0; 347fd95e81cSSteven Whitehouse 348fd95e81cSSteven Whitehouse return sprintf(buf, "%d\n", val); 349fd95e81cSSteven Whitehouse } 350fd95e81cSSteven Whitehouse 351fd95e81cSSteven Whitehouse static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 352fd95e81cSSteven Whitehouse { 353fd95e81cSSteven Whitehouse ssize_t ret = len; 354fd95e81cSSteven Whitehouse int val; 355fd95e81cSSteven Whitehouse 356fd95e81cSSteven Whitehouse val = simple_strtol(buf, NULL, 0); 357fd95e81cSSteven Whitehouse 358fd95e81cSSteven Whitehouse if ((val == 1) && 359fd95e81cSSteven Whitehouse !strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm")) 360fd95e81cSSteven Whitehouse complete(&sdp->sd_wdack); 361fd95e81cSSteven Whitehouse else 362fd95e81cSSteven Whitehouse ret = -EINVAL; 363fd95e81cSSteven Whitehouse return ret; 364fd95e81cSSteven Whitehouse } 365fd95e81cSSteven Whitehouse 366f057f6cdSSteven Whitehouse static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) 367f057f6cdSSteven Whitehouse { 368f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 369f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first); 370f057f6cdSSteven Whitehouse } 371f057f6cdSSteven Whitehouse 372ba6e9364SSteven Whitehouse static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 373ba6e9364SSteven Whitehouse { 374ba6e9364SSteven Whitehouse unsigned first; 375ba6e9364SSteven Whitehouse int rv; 376ba6e9364SSteven Whitehouse 377ba6e9364SSteven Whitehouse rv = sscanf(buf, "%u", &first); 378ba6e9364SSteven Whitehouse if (rv != 1 || first > 1) 379ba6e9364SSteven Whitehouse return -EINVAL; 3803942ae53SSteven Whitehouse rv = wait_for_completion_killable(&sdp->sd_locking_init); 3813942ae53SSteven Whitehouse if (rv) 3823942ae53SSteven Whitehouse return rv; 383ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 384ba6e9364SSteven Whitehouse rv = -EBUSY; 385ba6e9364SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 386ba6e9364SSteven Whitehouse goto out; 387ba6e9364SSteven Whitehouse rv = -EINVAL; 388ba6e9364SSteven Whitehouse if (sdp->sd_args.ar_spectator) 389ba6e9364SSteven Whitehouse goto out; 390ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 391ba6e9364SSteven Whitehouse goto out; 392ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_first = first; 393ba6e9364SSteven Whitehouse rv = 0; 394ba6e9364SSteven Whitehouse out: 395ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 396ba6e9364SSteven Whitehouse return rv ? rv : len; 397ba6e9364SSteven Whitehouse } 398ba6e9364SSteven Whitehouse 399f057f6cdSSteven Whitehouse static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) 400f057f6cdSSteven Whitehouse { 401f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 402e0c2a9aaSDavid Teigland return sprintf(buf, "%d\n", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags)); 403f057f6cdSSteven Whitehouse } 404f057f6cdSSteven Whitehouse 405e0c2a9aaSDavid Teigland int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid) 406f057f6cdSSteven Whitehouse { 407f057f6cdSSteven Whitehouse struct gfs2_jdesc *jd; 408fe64d517SSteven Whitehouse int rv; 409f057f6cdSSteven Whitehouse 410f057f6cdSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 411fe64d517SSteven Whitehouse rv = -EBUSY; 412fe64d517SSteven Whitehouse if (sdp->sd_jdesc->jd_jid == jid) 413fe64d517SSteven Whitehouse goto out; 414fe64d517SSteven Whitehouse rv = -ENOENT; 415f057f6cdSSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 416f057f6cdSSteven Whitehouse if (jd->jd_jid != jid) 417f057f6cdSSteven Whitehouse continue; 4186ecd7c2dSTejun Heo rv = gfs2_recover_journal(jd, false); 419f057f6cdSSteven Whitehouse break; 420f057f6cdSSteven Whitehouse } 421fe64d517SSteven Whitehouse out: 422f057f6cdSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 423e0c2a9aaSDavid Teigland return rv; 424e0c2a9aaSDavid Teigland } 425e0c2a9aaSDavid Teigland 426e0c2a9aaSDavid Teigland static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 427e0c2a9aaSDavid Teigland { 428e0c2a9aaSDavid Teigland unsigned jid; 429e0c2a9aaSDavid Teigland int rv; 430e0c2a9aaSDavid Teigland 431e0c2a9aaSDavid Teigland rv = sscanf(buf, "%u", &jid); 432e0c2a9aaSDavid Teigland if (rv != 1) 433e0c2a9aaSDavid Teigland return -EINVAL; 434e0c2a9aaSDavid Teigland 4351a058f52SDavid Teigland if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) { 4361a058f52SDavid Teigland rv = -ESHUTDOWN; 4371a058f52SDavid Teigland goto out; 4381a058f52SDavid Teigland } 439e0c2a9aaSDavid Teigland 4401a058f52SDavid Teigland rv = gfs2_recover_set(sdp, jid); 4411a058f52SDavid Teigland out: 442fe64d517SSteven Whitehouse return rv ? rv : len; 443f057f6cdSSteven Whitehouse } 444f057f6cdSSteven Whitehouse 445f057f6cdSSteven Whitehouse static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) 446f057f6cdSSteven Whitehouse { 447f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 448f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_done); 449f057f6cdSSteven Whitehouse } 450f057f6cdSSteven Whitehouse 451f057f6cdSSteven Whitehouse static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) 452f057f6cdSSteven Whitehouse { 453f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 454f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_status); 455f057f6cdSSteven Whitehouse } 456f057f6cdSSteven Whitehouse 457e1b28aabSSteven Whitehouse static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) 458e1b28aabSSteven Whitehouse { 459feb47ca9SSteven Whitehouse return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid); 460e1b28aabSSteven Whitehouse } 461e1b28aabSSteven Whitehouse 462ba6e9364SSteven Whitehouse static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 463ba6e9364SSteven Whitehouse { 464feb47ca9SSteven Whitehouse int jid; 465ba6e9364SSteven Whitehouse int rv; 466ba6e9364SSteven Whitehouse 467feb47ca9SSteven Whitehouse rv = sscanf(buf, "%d", &jid); 468ba6e9364SSteven Whitehouse if (rv != 1) 469ba6e9364SSteven Whitehouse return -EINVAL; 4703942ae53SSteven Whitehouse rv = wait_for_completion_killable(&sdp->sd_locking_init); 4713942ae53SSteven Whitehouse if (rv) 4723942ae53SSteven Whitehouse return rv; 473ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 474ba6e9364SSteven Whitehouse rv = -EINVAL; 475ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 476ba6e9364SSteven Whitehouse goto out; 477ba6e9364SSteven Whitehouse rv = -EBUSY; 478feb47ca9SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 479ba6e9364SSteven Whitehouse goto out; 480feb47ca9SSteven Whitehouse rv = 0; 481feb47ca9SSteven Whitehouse if (sdp->sd_args.ar_spectator && jid > 0) 482feb47ca9SSteven Whitehouse rv = jid = -EINVAL; 483ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_jid = jid; 484feb47ca9SSteven Whitehouse clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); 485ba6e9364SSteven Whitehouse smp_mb__after_clear_bit(); 486ba6e9364SSteven Whitehouse wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); 487ba6e9364SSteven Whitehouse out: 488ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 489ba6e9364SSteven Whitehouse return rv ? rv : len; 490ba6e9364SSteven Whitehouse } 491ba6e9364SSteven Whitehouse 492f057f6cdSSteven Whitehouse #define GDLM_ATTR(_name,_mode,_show,_store) \ 49348c2b613SSteven Whitehouse static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) 494f057f6cdSSteven Whitehouse 495f057f6cdSSteven Whitehouse GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); 496f057f6cdSSteven Whitehouse GDLM_ATTR(block, 0644, block_show, block_store); 497fd95e81cSSteven Whitehouse GDLM_ATTR(withdraw, 0644, wdack_show, wdack_store); 498ba6e9364SSteven Whitehouse GDLM_ATTR(jid, 0644, jid_show, jid_store); 499ba6e9364SSteven Whitehouse GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store); 500f057f6cdSSteven Whitehouse GDLM_ATTR(first_done, 0444, first_done_show, NULL); 501d7e623daSSteven Whitehouse GDLM_ATTR(recover, 0600, NULL, recover_store); 502f057f6cdSSteven Whitehouse GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); 503f057f6cdSSteven Whitehouse GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); 504f057f6cdSSteven Whitehouse 505f057f6cdSSteven Whitehouse static struct attribute *lock_module_attrs[] = { 506f057f6cdSSteven Whitehouse &gdlm_attr_proto_name.attr, 507f057f6cdSSteven Whitehouse &gdlm_attr_block.attr, 508f057f6cdSSteven Whitehouse &gdlm_attr_withdraw.attr, 509e1b28aabSSteven Whitehouse &gdlm_attr_jid.attr, 510f057f6cdSSteven Whitehouse &gdlm_attr_first.attr, 511f057f6cdSSteven Whitehouse &gdlm_attr_first_done.attr, 512f057f6cdSSteven Whitehouse &gdlm_attr_recover.attr, 513f057f6cdSSteven Whitehouse &gdlm_attr_recover_done.attr, 514f057f6cdSSteven Whitehouse &gdlm_attr_recover_status.attr, 515ea67eedbSSteven Whitehouse NULL, 516b3b94faaSDavid Teigland }; 517b3b94faaSDavid Teigland 518b3b94faaSDavid Teigland /* 519b3b94faaSDavid Teigland * get and set struct gfs2_tune fields 520b3b94faaSDavid Teigland */ 521b3b94faaSDavid Teigland 522b3b94faaSDavid Teigland static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) 523b3b94faaSDavid Teigland { 5243204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u %u\n", 5253204a6c0SDavid Teigland sdp->sd_tune.gt_quota_scale_num, 526b3b94faaSDavid Teigland sdp->sd_tune.gt_quota_scale_den); 527b3b94faaSDavid Teigland } 528b3b94faaSDavid Teigland 529b3b94faaSDavid Teigland static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, 530b3b94faaSDavid Teigland size_t len) 531b3b94faaSDavid Teigland { 532b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 533b3b94faaSDavid Teigland unsigned int x, y; 534b3b94faaSDavid Teigland 535b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 53641735818SZhao Hongjiang return -EPERM; 537b3b94faaSDavid Teigland 538b3b94faaSDavid Teigland if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) 539b3b94faaSDavid Teigland return -EINVAL; 540b3b94faaSDavid Teigland 541b3b94faaSDavid Teigland spin_lock(>->gt_spin); 542b3b94faaSDavid Teigland gt->gt_quota_scale_num = x; 543b3b94faaSDavid Teigland gt->gt_quota_scale_den = y; 544b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 545b3b94faaSDavid Teigland return len; 546b3b94faaSDavid Teigland } 547b3b94faaSDavid Teigland 548b3b94faaSDavid Teigland static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, 549b3b94faaSDavid Teigland int check_zero, const char *buf, size_t len) 550b3b94faaSDavid Teigland { 551b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 552b3b94faaSDavid Teigland unsigned int x; 553b3b94faaSDavid Teigland 554b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 55541735818SZhao Hongjiang return -EPERM; 556b3b94faaSDavid Teigland 557b3b94faaSDavid Teigland x = simple_strtoul(buf, NULL, 0); 558b3b94faaSDavid Teigland 559b3b94faaSDavid Teigland if (check_zero && !x) 560b3b94faaSDavid Teigland return -EINVAL; 561b3b94faaSDavid Teigland 562b3b94faaSDavid Teigland spin_lock(>->gt_spin); 563b3b94faaSDavid Teigland *field = x; 564b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 565b3b94faaSDavid Teigland return len; 566b3b94faaSDavid Teigland } 567b3b94faaSDavid Teigland 568b3b94faaSDavid Teigland #define TUNE_ATTR_3(name, show, store) \ 56948c2b613SSteven Whitehouse static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) 570b3b94faaSDavid Teigland 571b3b94faaSDavid Teigland #define TUNE_ATTR_2(name, store) \ 572b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 573b3b94faaSDavid Teigland { \ 5743204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ 575b3b94faaSDavid Teigland } \ 576b3b94faaSDavid Teigland TUNE_ATTR_3(name, name##_show, store) 577b3b94faaSDavid Teigland 578b3b94faaSDavid Teigland #define TUNE_ATTR(name, check_zero) \ 579b3b94faaSDavid Teigland static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ 580b3b94faaSDavid Teigland { \ 581b3b94faaSDavid Teigland return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ 582b3b94faaSDavid Teigland } \ 583b3b94faaSDavid Teigland TUNE_ATTR_2(name, name##_store) 584b3b94faaSDavid Teigland 585b3b94faaSDavid Teigland TUNE_ATTR(quota_warn_period, 0); 586b3b94faaSDavid Teigland TUNE_ATTR(quota_quantum, 0); 587b3b94faaSDavid Teigland TUNE_ATTR(max_readahead, 0); 588b3b94faaSDavid Teigland TUNE_ATTR(complain_secs, 0); 589b3b94faaSDavid Teigland TUNE_ATTR(statfs_slow, 0); 590b3b94faaSDavid Teigland TUNE_ATTR(new_files_jdata, 0); 591b3b94faaSDavid Teigland TUNE_ATTR(statfs_quantum, 1); 592b3b94faaSDavid Teigland TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); 593b3b94faaSDavid Teigland 594b3b94faaSDavid Teigland static struct attribute *tune_attrs[] = { 595b3b94faaSDavid Teigland &tune_attr_quota_warn_period.attr, 596b3b94faaSDavid Teigland &tune_attr_quota_quantum.attr, 597b3b94faaSDavid Teigland &tune_attr_max_readahead.attr, 598b3b94faaSDavid Teigland &tune_attr_complain_secs.attr, 599b3b94faaSDavid Teigland &tune_attr_statfs_slow.attr, 600b3b94faaSDavid Teigland &tune_attr_statfs_quantum.attr, 601b3b94faaSDavid Teigland &tune_attr_quota_scale.attr, 602b3b94faaSDavid Teigland &tune_attr_new_files_jdata.attr, 603ea67eedbSSteven Whitehouse NULL, 604b3b94faaSDavid Teigland }; 605b3b94faaSDavid Teigland 606b3b94faaSDavid Teigland static struct attribute_group tune_group = { 607b3b94faaSDavid Teigland .name = "tune", 608ea67eedbSSteven Whitehouse .attrs = tune_attrs, 609b3b94faaSDavid Teigland }; 610b3b94faaSDavid Teigland 611f057f6cdSSteven Whitehouse static struct attribute_group lock_module_group = { 612f057f6cdSSteven Whitehouse .name = "lock_module", 613f057f6cdSSteven Whitehouse .attrs = lock_module_attrs, 614f057f6cdSSteven Whitehouse }; 615f057f6cdSSteven Whitehouse 616b3b94faaSDavid Teigland int gfs2_sys_fs_add(struct gfs2_sbd *sdp) 617b3b94faaSDavid Teigland { 618440d6da2SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 619b3b94faaSDavid Teigland int error; 620440d6da2SSteven Whitehouse char ro[20]; 621440d6da2SSteven Whitehouse char spectator[20]; 622440d6da2SSteven Whitehouse char *envp[] = { ro, spectator, NULL }; 6230d515210SBob Peterson int sysfs_frees_sdp = 0; 624440d6da2SSteven Whitehouse 625440d6da2SSteven Whitehouse sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); 626440d6da2SSteven Whitehouse sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); 627b3b94faaSDavid Teigland 6289bec101aSGreg Kroah-Hartman sdp->sd_kobj.kset = gfs2_kset; 629901195edSGreg Kroah-Hartman error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, 630901195edSGreg Kroah-Hartman "%s", sdp->sd_table_name); 631b3b94faaSDavid Teigland if (error) 6320d515210SBob Peterson goto fail_reg; 633b3b94faaSDavid Teigland 6340d515210SBob Peterson sysfs_frees_sdp = 1; /* Freeing sdp is now done by sysfs calling 6350d515210SBob Peterson function gfs2_sbd_release. */ 636b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &tune_group); 637b3b94faaSDavid Teigland if (error) 638f6eb5349SSteven Whitehouse goto fail_reg; 639b3b94faaSDavid Teigland 640f057f6cdSSteven Whitehouse error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); 641f057f6cdSSteven Whitehouse if (error) 642f057f6cdSSteven Whitehouse goto fail_tune; 643f057f6cdSSteven Whitehouse 64431e54b01SSteven Whitehouse error = sysfs_create_link(&sdp->sd_kobj, 64531e54b01SSteven Whitehouse &disk_to_dev(sb->s_bdev->bd_disk)->kobj, 64631e54b01SSteven Whitehouse "device"); 64731e54b01SSteven Whitehouse if (error) 64831e54b01SSteven Whitehouse goto fail_lock_module; 64931e54b01SSteven Whitehouse 650440d6da2SSteven Whitehouse kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); 651b3b94faaSDavid Teigland return 0; 652b3b94faaSDavid Teigland 65331e54b01SSteven Whitehouse fail_lock_module: 65431e54b01SSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 655f057f6cdSSteven Whitehouse fail_tune: 656f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &tune_group); 657b3b94faaSDavid Teigland fail_reg: 6580d515210SBob Peterson free_percpu(sdp->sd_lkstats); 65965952fb4SDavid Teigland fs_err(sdp, "error %d adding sysfs files", error); 6600d515210SBob Peterson if (sysfs_frees_sdp) 6610d515210SBob Peterson kobject_put(&sdp->sd_kobj); 6620d515210SBob Peterson else 6630d515210SBob Peterson kfree(sdp); 6640d515210SBob Peterson sb->s_fs_info = NULL; 665b3b94faaSDavid Teigland return error; 666b3b94faaSDavid Teigland } 667b3b94faaSDavid Teigland 668b3b94faaSDavid Teigland void gfs2_sys_fs_del(struct gfs2_sbd *sdp) 669b3b94faaSDavid Teigland { 67031e54b01SSteven Whitehouse sysfs_remove_link(&sdp->sd_kobj, "device"); 671b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &tune_group); 672f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 673197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 674b3b94faaSDavid Teigland } 675b3b94faaSDavid Teigland 676fdd1062eSSteven Whitehouse static int gfs2_uevent(struct kset *kset, struct kobject *kobj, 677fdd1062eSSteven Whitehouse struct kobj_uevent_env *env) 678fdd1062eSSteven Whitehouse { 679fdd1062eSSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 68032e471efSSteven Whitehouse struct super_block *s = sdp->sd_vfs; 68132e471efSSteven Whitehouse const u8 *uuid = s->s_uuid; 68202e3cc70SSteven Whitehouse 683fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); 684fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); 685ba6e9364SSteven Whitehouse if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags)) 686feb47ca9SSteven Whitehouse add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid); 687f0b34ae6SJoe Perches if (gfs2_uuid_valid(uuid)) 688f0b34ae6SJoe Perches add_uevent_var(env, "UUID=%pUB", uuid); 689fdd1062eSSteven Whitehouse return 0; 690fdd1062eSSteven Whitehouse } 691fdd1062eSSteven Whitehouse 6929cd43611SEmese Revfy static const struct kset_uevent_ops gfs2_uevent_ops = { 693fdd1062eSSteven Whitehouse .uevent = gfs2_uevent, 694fdd1062eSSteven Whitehouse }; 695fdd1062eSSteven Whitehouse 696b3b94faaSDavid Teigland int gfs2_sys_init(void) 697b3b94faaSDavid Teigland { 698fdd1062eSSteven Whitehouse gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); 6999bec101aSGreg Kroah-Hartman if (!gfs2_kset) 7009bec101aSGreg Kroah-Hartman return -ENOMEM; 7019bec101aSGreg Kroah-Hartman return 0; 702b3b94faaSDavid Teigland } 703b3b94faaSDavid Teigland 704b3b94faaSDavid Teigland void gfs2_sys_uninit(void) 705b3b94faaSDavid Teigland { 7069bec101aSGreg Kroah-Hartman kset_unregister(gfs2_kset); 707b3b94faaSDavid Teigland } 708b3b94faaSDavid Teigland 709