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 10b3b94faaSDavid Teigland #include <linux/sched.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> 16b3b94faaSDavid Teigland #include <asm/uaccess.h> 17f057f6cdSSteven Whitehouse #include <linux/gfs2_ondisk.h> 1831e54b01SSteven Whitehouse #include <linux/genhd.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 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 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 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 66b3b94faaSDavid Teigland static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) 67b3b94faaSDavid Teigland { 683204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname); 69b3b94faaSDavid Teigland } 70b3b94faaSDavid Teigland 7102e3cc70SSteven Whitehouse static int gfs2_uuid_valid(const u8 *uuid) 7202e3cc70SSteven Whitehouse { 7302e3cc70SSteven Whitehouse int i; 7402e3cc70SSteven Whitehouse 7502e3cc70SSteven Whitehouse for (i = 0; i < 16; i++) { 7602e3cc70SSteven Whitehouse if (uuid[i]) 7702e3cc70SSteven Whitehouse return 1; 7802e3cc70SSteven Whitehouse } 7902e3cc70SSteven Whitehouse return 0; 8002e3cc70SSteven Whitehouse } 8102e3cc70SSteven Whitehouse 8202e3cc70SSteven Whitehouse static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf) 8302e3cc70SSteven Whitehouse { 84*32e471efSSteven Whitehouse struct super_block *s = sdp->sd_vfs; 85*32e471efSSteven Whitehouse const u8 *uuid = s->s_uuid; 8602e3cc70SSteven Whitehouse buf[0] = '\0'; 8702e3cc70SSteven Whitehouse if (!gfs2_uuid_valid(uuid)) 8802e3cc70SSteven Whitehouse return 0; 89f0b34ae6SJoe Perches return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid); 9002e3cc70SSteven Whitehouse } 9102e3cc70SSteven Whitehouse 92b3b94faaSDavid Teigland static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) 93b3b94faaSDavid Teigland { 94b3b94faaSDavid Teigland unsigned int count; 95b3b94faaSDavid Teigland 96f55ab26aSSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 97b3b94faaSDavid Teigland count = sdp->sd_freeze_count; 98f55ab26aSSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 99b3b94faaSDavid Teigland 1003204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", count); 101b3b94faaSDavid Teigland } 102b3b94faaSDavid Teigland 103b3b94faaSDavid Teigland static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 104b3b94faaSDavid Teigland { 105b3b94faaSDavid Teigland ssize_t ret = len; 106b3b94faaSDavid Teigland int error = 0; 107b3b94faaSDavid Teigland int n = simple_strtol(buf, NULL, 0); 108b3b94faaSDavid Teigland 109b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 110b3b94faaSDavid Teigland return -EACCES; 111b3b94faaSDavid Teigland 112b3b94faaSDavid Teigland switch (n) { 113b3b94faaSDavid Teigland case 0: 114b3b94faaSDavid Teigland gfs2_unfreeze_fs(sdp); 115b3b94faaSDavid Teigland break; 116b3b94faaSDavid Teigland case 1: 117b3b94faaSDavid Teigland error = gfs2_freeze_fs(sdp); 118b3b94faaSDavid Teigland break; 119b3b94faaSDavid Teigland default: 120b3b94faaSDavid Teigland ret = -EINVAL; 121b3b94faaSDavid Teigland } 122b3b94faaSDavid Teigland 123b3b94faaSDavid Teigland if (error) 124b3b94faaSDavid Teigland fs_warn(sdp, "freeze %d error %d", n, error); 125b3b94faaSDavid Teigland 126b3b94faaSDavid Teigland return ret; 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)) 138b3b94faaSDavid Teigland return -EACCES; 139b3b94faaSDavid Teigland 140b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 141b3b94faaSDavid Teigland return -EINVAL; 142b3b94faaSDavid Teigland 143b3b94faaSDavid Teigland gfs2_lm_withdraw(sdp, 144b3b94faaSDavid Teigland "GFS2: fsid=%s: withdrawing from cluster at user's request\n", 145b3b94faaSDavid Teigland sdp->sd_fsname); 146b3b94faaSDavid Teigland return len; 147b3b94faaSDavid Teigland } 148b3b94faaSDavid Teigland 149b3b94faaSDavid Teigland static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, 150b3b94faaSDavid Teigland size_t len) 151b3b94faaSDavid Teigland { 152b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 153b3b94faaSDavid Teigland return -EACCES; 154b3b94faaSDavid Teigland 155b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 156b3b94faaSDavid Teigland return -EINVAL; 157b3b94faaSDavid Teigland 1588c42d637SSteven Whitehouse gfs2_statfs_sync(sdp->sd_vfs, 0); 159b3b94faaSDavid Teigland return len; 160b3b94faaSDavid Teigland } 161b3b94faaSDavid Teigland 162b3b94faaSDavid Teigland static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, 163b3b94faaSDavid Teigland size_t len) 164b3b94faaSDavid Teigland { 165b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 166b3b94faaSDavid Teigland return -EACCES; 167b3b94faaSDavid Teigland 168b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 169b3b94faaSDavid Teigland return -EINVAL; 170b3b94faaSDavid Teigland 1715fb324adSChristoph Hellwig gfs2_quota_sync(sdp->sd_vfs, 0, 1); 172b3b94faaSDavid Teigland return len; 173b3b94faaSDavid Teigland } 174b3b94faaSDavid Teigland 175b3b94faaSDavid Teigland static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, 176b3b94faaSDavid Teigland size_t len) 177b3b94faaSDavid Teigland { 178ea762338SSteven Whitehouse int error; 179cd915493SSteven Whitehouse u32 id; 180b3b94faaSDavid Teigland 181b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 182b3b94faaSDavid Teigland return -EACCES; 183b3b94faaSDavid Teigland 184b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 185b3b94faaSDavid Teigland 186ea762338SSteven Whitehouse error = gfs2_quota_refresh(sdp, 1, id); 187ea762338SSteven Whitehouse return error ? error : len; 188b3b94faaSDavid Teigland } 189b3b94faaSDavid Teigland 190b3b94faaSDavid Teigland static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, 191b3b94faaSDavid Teigland size_t len) 192b3b94faaSDavid Teigland { 193ea762338SSteven Whitehouse int error; 194cd915493SSteven Whitehouse u32 id; 195b3b94faaSDavid Teigland 196b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 197b3b94faaSDavid Teigland return -EACCES; 198b3b94faaSDavid Teigland 199b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 200b3b94faaSDavid Teigland 201ea762338SSteven Whitehouse error = gfs2_quota_refresh(sdp, 0, id); 202ea762338SSteven Whitehouse return error ? error : len; 203b3b94faaSDavid Teigland } 204b3b94faaSDavid Teigland 20564d576baSSteven Whitehouse static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 20664d576baSSteven Whitehouse { 20764d576baSSteven Whitehouse struct gfs2_glock *gl; 20864d576baSSteven Whitehouse const struct gfs2_glock_operations *glops; 20964d576baSSteven Whitehouse unsigned int glmode; 21064d576baSSteven Whitehouse unsigned int gltype; 21164d576baSSteven Whitehouse unsigned long long glnum; 21264d576baSSteven Whitehouse char mode[16]; 21364d576baSSteven Whitehouse int rv; 21464d576baSSteven Whitehouse 21564d576baSSteven Whitehouse if (!capable(CAP_SYS_ADMIN)) 21664d576baSSteven Whitehouse return -EACCES; 21764d576baSSteven Whitehouse 21864d576baSSteven Whitehouse rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, 21964d576baSSteven Whitehouse mode); 22064d576baSSteven Whitehouse if (rv != 3) 22164d576baSSteven Whitehouse return -EINVAL; 22264d576baSSteven Whitehouse 22364d576baSSteven Whitehouse if (strcmp(mode, "EX") == 0) 22464d576baSSteven Whitehouse glmode = LM_ST_UNLOCKED; 22564d576baSSteven Whitehouse else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) 22664d576baSSteven Whitehouse glmode = LM_ST_DEFERRED; 22764d576baSSteven Whitehouse else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) 22864d576baSSteven Whitehouse glmode = LM_ST_SHARED; 22964d576baSSteven Whitehouse else 23064d576baSSteven Whitehouse return -EINVAL; 23164d576baSSteven Whitehouse 23264d576baSSteven Whitehouse if (gltype > LM_TYPE_JOURNAL) 23364d576baSSteven Whitehouse return -EINVAL; 23413466985SSteven Whitehouse if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK) 23513466985SSteven Whitehouse glops = &gfs2_trans_glops; 23613466985SSteven Whitehouse else 23764d576baSSteven Whitehouse glops = gfs2_glops_list[gltype]; 23864d576baSSteven Whitehouse if (glops == NULL) 23964d576baSSteven Whitehouse return -EINVAL; 2406a99be5dSSteven Whitehouse if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) 241913a71d2SSteven Whitehouse fs_info(sdp, "demote interface used\n"); 24264d576baSSteven Whitehouse rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); 24364d576baSSteven Whitehouse if (rv) 24464d576baSSteven Whitehouse return rv; 24564d576baSSteven Whitehouse gfs2_glock_cb(gl, glmode); 24664d576baSSteven Whitehouse gfs2_glock_put(gl); 24764d576baSSteven Whitehouse return len; 24864d576baSSteven Whitehouse } 24964d576baSSteven Whitehouse 250b3b94faaSDavid Teigland 251b3b94faaSDavid Teigland #define GFS2_ATTR(name, mode, show, store) \ 252b3b94faaSDavid Teigland static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) 253b3b94faaSDavid Teigland 254b3b94faaSDavid Teigland GFS2_ATTR(id, 0444, id_show, NULL); 255b3b94faaSDavid Teigland GFS2_ATTR(fsname, 0444, fsname_show, NULL); 25602e3cc70SSteven Whitehouse GFS2_ATTR(uuid, 0444, uuid_show, NULL); 257b3b94faaSDavid Teigland GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); 258b3b94faaSDavid Teigland GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 259b3b94faaSDavid Teigland GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); 260b3b94faaSDavid Teigland GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); 261b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); 262b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); 26364d576baSSteven Whitehouse GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); 264b3b94faaSDavid Teigland 265b3b94faaSDavid Teigland static struct attribute *gfs2_attrs[] = { 266b3b94faaSDavid Teigland &gfs2_attr_id.attr, 267b3b94faaSDavid Teigland &gfs2_attr_fsname.attr, 26802e3cc70SSteven Whitehouse &gfs2_attr_uuid.attr, 269b3b94faaSDavid Teigland &gfs2_attr_freeze.attr, 270b3b94faaSDavid Teigland &gfs2_attr_withdraw.attr, 271b3b94faaSDavid Teigland &gfs2_attr_statfs_sync.attr, 272b3b94faaSDavid Teigland &gfs2_attr_quota_sync.attr, 273b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_user.attr, 274b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_group.attr, 27564d576baSSteven Whitehouse &gfs2_attr_demote_rq.attr, 276b3b94faaSDavid Teigland NULL, 277b3b94faaSDavid Teigland }; 278b3b94faaSDavid Teigland 279b3b94faaSDavid Teigland static struct kobj_type gfs2_ktype = { 280b3b94faaSDavid Teigland .default_attrs = gfs2_attrs, 281b3b94faaSDavid Teigland .sysfs_ops = &gfs2_attr_ops, 282b3b94faaSDavid Teigland }; 283b3b94faaSDavid Teigland 284f057f6cdSSteven Whitehouse 285f057f6cdSSteven Whitehouse /* 286f057f6cdSSteven Whitehouse * lock_module. Originally from lock_dlm 287f057f6cdSSteven Whitehouse */ 288f057f6cdSSteven Whitehouse 289f057f6cdSSteven Whitehouse static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) 290f057f6cdSSteven Whitehouse { 291f057f6cdSSteven Whitehouse const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; 292f057f6cdSSteven Whitehouse return sprintf(buf, "%s\n", ops->lm_proto_name); 293f057f6cdSSteven Whitehouse } 294f057f6cdSSteven Whitehouse 295f057f6cdSSteven Whitehouse static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) 296f057f6cdSSteven Whitehouse { 297f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 298f057f6cdSSteven Whitehouse ssize_t ret; 299f057f6cdSSteven Whitehouse int val = 0; 300f057f6cdSSteven Whitehouse 301f057f6cdSSteven Whitehouse if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_flags)) 302f057f6cdSSteven Whitehouse val = 1; 303f057f6cdSSteven Whitehouse ret = sprintf(buf, "%d\n", val); 304f057f6cdSSteven Whitehouse return ret; 305f057f6cdSSteven Whitehouse } 306f057f6cdSSteven Whitehouse 307f057f6cdSSteven Whitehouse static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 308f057f6cdSSteven Whitehouse { 309f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 310f057f6cdSSteven Whitehouse ssize_t ret = len; 311f057f6cdSSteven Whitehouse int val; 312f057f6cdSSteven Whitehouse 313f057f6cdSSteven Whitehouse val = simple_strtol(buf, NULL, 0); 314f057f6cdSSteven Whitehouse 315f057f6cdSSteven Whitehouse if (val == 1) 316f057f6cdSSteven Whitehouse set_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); 317f057f6cdSSteven Whitehouse else if (val == 0) { 318f057f6cdSSteven Whitehouse clear_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); 319f057f6cdSSteven Whitehouse smp_mb__after_clear_bit(); 320f057f6cdSSteven Whitehouse gfs2_glock_thaw(sdp); 321f057f6cdSSteven Whitehouse } else { 322f057f6cdSSteven Whitehouse ret = -EINVAL; 323f057f6cdSSteven Whitehouse } 324f057f6cdSSteven Whitehouse return ret; 325f057f6cdSSteven Whitehouse } 326f057f6cdSSteven Whitehouse 327f057f6cdSSteven Whitehouse static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) 328f057f6cdSSteven Whitehouse { 329f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 330f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first); 331f057f6cdSSteven Whitehouse } 332f057f6cdSSteven Whitehouse 333ba6e9364SSteven Whitehouse static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 334ba6e9364SSteven Whitehouse { 335ba6e9364SSteven Whitehouse unsigned first; 336ba6e9364SSteven Whitehouse int rv; 337ba6e9364SSteven Whitehouse 338ba6e9364SSteven Whitehouse rv = sscanf(buf, "%u", &first); 339ba6e9364SSteven Whitehouse if (rv != 1 || first > 1) 340ba6e9364SSteven Whitehouse return -EINVAL; 341ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 342ba6e9364SSteven Whitehouse rv = -EBUSY; 343ba6e9364SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 344ba6e9364SSteven Whitehouse goto out; 345ba6e9364SSteven Whitehouse rv = -EINVAL; 346ba6e9364SSteven Whitehouse if (sdp->sd_args.ar_spectator) 347ba6e9364SSteven Whitehouse goto out; 348ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 349ba6e9364SSteven Whitehouse goto out; 350ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_first = first; 351ba6e9364SSteven Whitehouse rv = 0; 352ba6e9364SSteven Whitehouse out: 353ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 354ba6e9364SSteven Whitehouse return rv ? rv : len; 355ba6e9364SSteven Whitehouse } 356ba6e9364SSteven Whitehouse 357f057f6cdSSteven Whitehouse static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) 358f057f6cdSSteven Whitehouse { 359f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 360f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first_done); 361f057f6cdSSteven Whitehouse } 362f057f6cdSSteven Whitehouse 363fe64d517SSteven Whitehouse static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 364f057f6cdSSteven Whitehouse { 365fe64d517SSteven Whitehouse unsigned jid; 366f057f6cdSSteven Whitehouse struct gfs2_jdesc *jd; 367fe64d517SSteven Whitehouse int rv; 368f057f6cdSSteven Whitehouse 369fe64d517SSteven Whitehouse rv = sscanf(buf, "%u", &jid); 370fe64d517SSteven Whitehouse if (rv != 1) 371fe64d517SSteven Whitehouse return -EINVAL; 372fe64d517SSteven Whitehouse 373fe64d517SSteven Whitehouse rv = -ESHUTDOWN; 374f057f6cdSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 375fe64d517SSteven Whitehouse if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) 376fe64d517SSteven Whitehouse goto out; 377fe64d517SSteven Whitehouse rv = -EBUSY; 378fe64d517SSteven Whitehouse if (sdp->sd_jdesc->jd_jid == jid) 379fe64d517SSteven Whitehouse goto out; 380fe64d517SSteven Whitehouse rv = -ENOENT; 381f057f6cdSSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 382f057f6cdSSteven Whitehouse if (jd->jd_jid != jid) 383f057f6cdSSteven Whitehouse continue; 3846ecd7c2dSTejun Heo rv = gfs2_recover_journal(jd, false); 385f057f6cdSSteven Whitehouse break; 386f057f6cdSSteven Whitehouse } 387fe64d517SSteven Whitehouse out: 388f057f6cdSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 389fe64d517SSteven Whitehouse return rv ? rv : len; 390f057f6cdSSteven Whitehouse } 391f057f6cdSSteven Whitehouse 392f057f6cdSSteven Whitehouse static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) 393f057f6cdSSteven Whitehouse { 394f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 395f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_done); 396f057f6cdSSteven Whitehouse } 397f057f6cdSSteven Whitehouse 398f057f6cdSSteven Whitehouse static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) 399f057f6cdSSteven Whitehouse { 400f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 401f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_status); 402f057f6cdSSteven Whitehouse } 403f057f6cdSSteven Whitehouse 404e1b28aabSSteven Whitehouse static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) 405e1b28aabSSteven Whitehouse { 406feb47ca9SSteven Whitehouse return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid); 407e1b28aabSSteven Whitehouse } 408e1b28aabSSteven Whitehouse 409ba6e9364SSteven Whitehouse static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 410ba6e9364SSteven Whitehouse { 411feb47ca9SSteven Whitehouse int jid; 412ba6e9364SSteven Whitehouse int rv; 413ba6e9364SSteven Whitehouse 414feb47ca9SSteven Whitehouse rv = sscanf(buf, "%d", &jid); 415ba6e9364SSteven Whitehouse if (rv != 1) 416ba6e9364SSteven Whitehouse return -EINVAL; 417ba6e9364SSteven Whitehouse 418ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 419ba6e9364SSteven Whitehouse rv = -EINVAL; 420ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 421ba6e9364SSteven Whitehouse goto out; 422ba6e9364SSteven Whitehouse rv = -EBUSY; 423feb47ca9SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 424ba6e9364SSteven Whitehouse goto out; 425feb47ca9SSteven Whitehouse rv = 0; 426feb47ca9SSteven Whitehouse if (sdp->sd_args.ar_spectator && jid > 0) 427feb47ca9SSteven Whitehouse rv = jid = -EINVAL; 428ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_jid = jid; 429feb47ca9SSteven Whitehouse clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); 430ba6e9364SSteven Whitehouse smp_mb__after_clear_bit(); 431ba6e9364SSteven Whitehouse wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); 432ba6e9364SSteven Whitehouse out: 433ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 434ba6e9364SSteven Whitehouse return rv ? rv : len; 435ba6e9364SSteven Whitehouse } 436ba6e9364SSteven Whitehouse 437f057f6cdSSteven Whitehouse #define GDLM_ATTR(_name,_mode,_show,_store) \ 43848c2b613SSteven Whitehouse static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) 439f057f6cdSSteven Whitehouse 440f057f6cdSSteven Whitehouse GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); 441f057f6cdSSteven Whitehouse GDLM_ATTR(block, 0644, block_show, block_store); 442f057f6cdSSteven Whitehouse GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 443ba6e9364SSteven Whitehouse GDLM_ATTR(jid, 0644, jid_show, jid_store); 444ba6e9364SSteven Whitehouse GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store); 445f057f6cdSSteven Whitehouse GDLM_ATTR(first_done, 0444, first_done_show, NULL); 446d7e623daSSteven Whitehouse GDLM_ATTR(recover, 0600, NULL, recover_store); 447f057f6cdSSteven Whitehouse GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); 448f057f6cdSSteven Whitehouse GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); 449f057f6cdSSteven Whitehouse 450f057f6cdSSteven Whitehouse static struct attribute *lock_module_attrs[] = { 451f057f6cdSSteven Whitehouse &gdlm_attr_proto_name.attr, 452f057f6cdSSteven Whitehouse &gdlm_attr_block.attr, 453f057f6cdSSteven Whitehouse &gdlm_attr_withdraw.attr, 454e1b28aabSSteven Whitehouse &gdlm_attr_jid.attr, 455f057f6cdSSteven Whitehouse &gdlm_attr_first.attr, 456f057f6cdSSteven Whitehouse &gdlm_attr_first_done.attr, 457f057f6cdSSteven Whitehouse &gdlm_attr_recover.attr, 458f057f6cdSSteven Whitehouse &gdlm_attr_recover_done.attr, 459f057f6cdSSteven Whitehouse &gdlm_attr_recover_status.attr, 460ea67eedbSSteven Whitehouse NULL, 461b3b94faaSDavid Teigland }; 462b3b94faaSDavid Teigland 463b3b94faaSDavid Teigland /* 464b3b94faaSDavid Teigland * get and set struct gfs2_tune fields 465b3b94faaSDavid Teigland */ 466b3b94faaSDavid Teigland 467b3b94faaSDavid Teigland static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) 468b3b94faaSDavid Teigland { 4693204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u %u\n", 4703204a6c0SDavid Teigland sdp->sd_tune.gt_quota_scale_num, 471b3b94faaSDavid Teigland sdp->sd_tune.gt_quota_scale_den); 472b3b94faaSDavid Teigland } 473b3b94faaSDavid Teigland 474b3b94faaSDavid Teigland static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, 475b3b94faaSDavid Teigland size_t len) 476b3b94faaSDavid Teigland { 477b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 478b3b94faaSDavid Teigland unsigned int x, y; 479b3b94faaSDavid Teigland 480b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 481b3b94faaSDavid Teigland return -EACCES; 482b3b94faaSDavid Teigland 483b3b94faaSDavid Teigland if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) 484b3b94faaSDavid Teigland return -EINVAL; 485b3b94faaSDavid Teigland 486b3b94faaSDavid Teigland spin_lock(>->gt_spin); 487b3b94faaSDavid Teigland gt->gt_quota_scale_num = x; 488b3b94faaSDavid Teigland gt->gt_quota_scale_den = y; 489b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 490b3b94faaSDavid Teigland return len; 491b3b94faaSDavid Teigland } 492b3b94faaSDavid Teigland 493b3b94faaSDavid Teigland static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, 494b3b94faaSDavid Teigland int check_zero, const char *buf, size_t len) 495b3b94faaSDavid Teigland { 496b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 497b3b94faaSDavid Teigland unsigned int x; 498b3b94faaSDavid Teigland 499b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 500b3b94faaSDavid Teigland return -EACCES; 501b3b94faaSDavid Teigland 502b3b94faaSDavid Teigland x = simple_strtoul(buf, NULL, 0); 503b3b94faaSDavid Teigland 504b3b94faaSDavid Teigland if (check_zero && !x) 505b3b94faaSDavid Teigland return -EINVAL; 506b3b94faaSDavid Teigland 507b3b94faaSDavid Teigland spin_lock(>->gt_spin); 508b3b94faaSDavid Teigland *field = x; 509b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 510b3b94faaSDavid Teigland return len; 511b3b94faaSDavid Teigland } 512b3b94faaSDavid Teigland 513b3b94faaSDavid Teigland #define TUNE_ATTR_3(name, show, store) \ 51448c2b613SSteven Whitehouse static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) 515b3b94faaSDavid Teigland 516b3b94faaSDavid Teigland #define TUNE_ATTR_2(name, store) \ 517b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 518b3b94faaSDavid Teigland { \ 5193204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ 520b3b94faaSDavid Teigland } \ 521b3b94faaSDavid Teigland TUNE_ATTR_3(name, name##_show, store) 522b3b94faaSDavid Teigland 523b3b94faaSDavid Teigland #define TUNE_ATTR(name, check_zero) \ 524b3b94faaSDavid Teigland static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ 525b3b94faaSDavid Teigland { \ 526b3b94faaSDavid Teigland return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ 527b3b94faaSDavid Teigland } \ 528b3b94faaSDavid Teigland TUNE_ATTR_2(name, name##_store) 529b3b94faaSDavid Teigland 530b3b94faaSDavid Teigland TUNE_ATTR(quota_warn_period, 0); 531b3b94faaSDavid Teigland TUNE_ATTR(quota_quantum, 0); 532b3b94faaSDavid Teigland TUNE_ATTR(max_readahead, 0); 533b3b94faaSDavid Teigland TUNE_ATTR(complain_secs, 0); 534b3b94faaSDavid Teigland TUNE_ATTR(statfs_slow, 0); 535b3b94faaSDavid Teigland TUNE_ATTR(new_files_jdata, 0); 536b3b94faaSDavid Teigland TUNE_ATTR(quota_simul_sync, 1); 537b3b94faaSDavid Teigland TUNE_ATTR(statfs_quantum, 1); 538b3b94faaSDavid Teigland TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); 539b3b94faaSDavid Teigland 540b3b94faaSDavid Teigland static struct attribute *tune_attrs[] = { 541b3b94faaSDavid Teigland &tune_attr_quota_warn_period.attr, 542b3b94faaSDavid Teigland &tune_attr_quota_quantum.attr, 543b3b94faaSDavid Teigland &tune_attr_max_readahead.attr, 544b3b94faaSDavid Teigland &tune_attr_complain_secs.attr, 545b3b94faaSDavid Teigland &tune_attr_statfs_slow.attr, 546b3b94faaSDavid Teigland &tune_attr_quota_simul_sync.attr, 547b3b94faaSDavid Teigland &tune_attr_statfs_quantum.attr, 548b3b94faaSDavid Teigland &tune_attr_quota_scale.attr, 549b3b94faaSDavid Teigland &tune_attr_new_files_jdata.attr, 550ea67eedbSSteven Whitehouse NULL, 551b3b94faaSDavid Teigland }; 552b3b94faaSDavid Teigland 553b3b94faaSDavid Teigland static struct attribute_group tune_group = { 554b3b94faaSDavid Teigland .name = "tune", 555ea67eedbSSteven Whitehouse .attrs = tune_attrs, 556b3b94faaSDavid Teigland }; 557b3b94faaSDavid Teigland 558f057f6cdSSteven Whitehouse static struct attribute_group lock_module_group = { 559f057f6cdSSteven Whitehouse .name = "lock_module", 560f057f6cdSSteven Whitehouse .attrs = lock_module_attrs, 561f057f6cdSSteven Whitehouse }; 562f057f6cdSSteven Whitehouse 563b3b94faaSDavid Teigland int gfs2_sys_fs_add(struct gfs2_sbd *sdp) 564b3b94faaSDavid Teigland { 565440d6da2SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 566b3b94faaSDavid Teigland int error; 567440d6da2SSteven Whitehouse char ro[20]; 568440d6da2SSteven Whitehouse char spectator[20]; 569440d6da2SSteven Whitehouse char *envp[] = { ro, spectator, NULL }; 570440d6da2SSteven Whitehouse 571440d6da2SSteven Whitehouse sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); 572440d6da2SSteven Whitehouse sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); 573b3b94faaSDavid Teigland 5749bec101aSGreg Kroah-Hartman sdp->sd_kobj.kset = gfs2_kset; 575901195edSGreg Kroah-Hartman error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, 576901195edSGreg Kroah-Hartman "%s", sdp->sd_table_name); 577b3b94faaSDavid Teigland if (error) 578b3b94faaSDavid Teigland goto fail; 579b3b94faaSDavid Teigland 580b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &tune_group); 581b3b94faaSDavid Teigland if (error) 582f6eb5349SSteven Whitehouse goto fail_reg; 583b3b94faaSDavid Teigland 584f057f6cdSSteven Whitehouse error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); 585f057f6cdSSteven Whitehouse if (error) 586f057f6cdSSteven Whitehouse goto fail_tune; 587f057f6cdSSteven Whitehouse 58831e54b01SSteven Whitehouse error = sysfs_create_link(&sdp->sd_kobj, 58931e54b01SSteven Whitehouse &disk_to_dev(sb->s_bdev->bd_disk)->kobj, 59031e54b01SSteven Whitehouse "device"); 59131e54b01SSteven Whitehouse if (error) 59231e54b01SSteven Whitehouse goto fail_lock_module; 59331e54b01SSteven Whitehouse 594440d6da2SSteven Whitehouse kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); 595b3b94faaSDavid Teigland return 0; 596b3b94faaSDavid Teigland 59731e54b01SSteven Whitehouse fail_lock_module: 59831e54b01SSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 599f057f6cdSSteven Whitehouse fail_tune: 600f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &tune_group); 601b3b94faaSDavid Teigland fail_reg: 602197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 603b3b94faaSDavid Teigland fail: 60465952fb4SDavid Teigland fs_err(sdp, "error %d adding sysfs files", error); 605b3b94faaSDavid Teigland return error; 606b3b94faaSDavid Teigland } 607b3b94faaSDavid Teigland 608b3b94faaSDavid Teigland void gfs2_sys_fs_del(struct gfs2_sbd *sdp) 609b3b94faaSDavid Teigland { 61031e54b01SSteven Whitehouse sysfs_remove_link(&sdp->sd_kobj, "device"); 611b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &tune_group); 612f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 613197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 614b3b94faaSDavid Teigland } 615b3b94faaSDavid Teigland 616fdd1062eSSteven Whitehouse static int gfs2_uevent(struct kset *kset, struct kobject *kobj, 617fdd1062eSSteven Whitehouse struct kobj_uevent_env *env) 618fdd1062eSSteven Whitehouse { 619fdd1062eSSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 620*32e471efSSteven Whitehouse struct super_block *s = sdp->sd_vfs; 621*32e471efSSteven Whitehouse const u8 *uuid = s->s_uuid; 62202e3cc70SSteven Whitehouse 623fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); 624fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); 625ba6e9364SSteven Whitehouse if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags)) 626feb47ca9SSteven Whitehouse add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid); 627f0b34ae6SJoe Perches if (gfs2_uuid_valid(uuid)) 628f0b34ae6SJoe Perches add_uevent_var(env, "UUID=%pUB", uuid); 629fdd1062eSSteven Whitehouse return 0; 630fdd1062eSSteven Whitehouse } 631fdd1062eSSteven Whitehouse 6329cd43611SEmese Revfy static const struct kset_uevent_ops gfs2_uevent_ops = { 633fdd1062eSSteven Whitehouse .uevent = gfs2_uevent, 634fdd1062eSSteven Whitehouse }; 635fdd1062eSSteven Whitehouse 636b3b94faaSDavid Teigland int gfs2_sys_init(void) 637b3b94faaSDavid Teigland { 638fdd1062eSSteven Whitehouse gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); 6399bec101aSGreg Kroah-Hartman if (!gfs2_kset) 6409bec101aSGreg Kroah-Hartman return -ENOMEM; 6419bec101aSGreg Kroah-Hartman return 0; 642b3b94faaSDavid Teigland } 643b3b94faaSDavid Teigland 644b3b94faaSDavid Teigland void gfs2_sys_uninit(void) 645b3b94faaSDavid Teigland { 6469bec101aSGreg Kroah-Hartman kset_unregister(gfs2_kset); 647b3b94faaSDavid Teigland } 648b3b94faaSDavid Teigland 649