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 { 8402e3cc70SSteven Whitehouse const u8 *uuid = sdp->sd_sb.sb_uuid; 8502e3cc70SSteven Whitehouse buf[0] = '\0'; 8602e3cc70SSteven Whitehouse if (!gfs2_uuid_valid(uuid)) 8702e3cc70SSteven Whitehouse return 0; 88f0b34ae6SJoe Perches return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid); 8902e3cc70SSteven Whitehouse } 9002e3cc70SSteven Whitehouse 91b3b94faaSDavid Teigland static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) 92b3b94faaSDavid Teigland { 93b3b94faaSDavid Teigland unsigned int count; 94b3b94faaSDavid Teigland 95f55ab26aSSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 96b3b94faaSDavid Teigland count = sdp->sd_freeze_count; 97f55ab26aSSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 98b3b94faaSDavid Teigland 993204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", count); 100b3b94faaSDavid Teigland } 101b3b94faaSDavid Teigland 102b3b94faaSDavid Teigland static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 103b3b94faaSDavid Teigland { 104b3b94faaSDavid Teigland ssize_t ret = len; 105b3b94faaSDavid Teigland int error = 0; 106b3b94faaSDavid Teigland int n = simple_strtol(buf, NULL, 0); 107b3b94faaSDavid Teigland 108b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 109b3b94faaSDavid Teigland return -EACCES; 110b3b94faaSDavid Teigland 111b3b94faaSDavid Teigland switch (n) { 112b3b94faaSDavid Teigland case 0: 113b3b94faaSDavid Teigland gfs2_unfreeze_fs(sdp); 114b3b94faaSDavid Teigland break; 115b3b94faaSDavid Teigland case 1: 116b3b94faaSDavid Teigland error = gfs2_freeze_fs(sdp); 117b3b94faaSDavid Teigland break; 118b3b94faaSDavid Teigland default: 119b3b94faaSDavid Teigland ret = -EINVAL; 120b3b94faaSDavid Teigland } 121b3b94faaSDavid Teigland 122b3b94faaSDavid Teigland if (error) 123b3b94faaSDavid Teigland fs_warn(sdp, "freeze %d error %d", n, error); 124b3b94faaSDavid Teigland 125b3b94faaSDavid Teigland return ret; 126b3b94faaSDavid Teigland } 127b3b94faaSDavid Teigland 128b3b94faaSDavid Teigland static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) 129b3b94faaSDavid Teigland { 130b3b94faaSDavid Teigland unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); 1313204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", b); 132b3b94faaSDavid Teigland } 133b3b94faaSDavid Teigland 134b3b94faaSDavid Teigland static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 135b3b94faaSDavid Teigland { 136b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 137b3b94faaSDavid Teigland return -EACCES; 138b3b94faaSDavid Teigland 139b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 140b3b94faaSDavid Teigland return -EINVAL; 141b3b94faaSDavid Teigland 142b3b94faaSDavid Teigland gfs2_lm_withdraw(sdp, 143b3b94faaSDavid Teigland "GFS2: fsid=%s: withdrawing from cluster at user's request\n", 144b3b94faaSDavid Teigland sdp->sd_fsname); 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)) 152b3b94faaSDavid Teigland return -EACCES; 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)) 165b3b94faaSDavid Teigland return -EACCES; 166b3b94faaSDavid Teigland 167b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 168b3b94faaSDavid Teigland return -EINVAL; 169b3b94faaSDavid Teigland 1705fb324adSChristoph Hellwig gfs2_quota_sync(sdp->sd_vfs, 0, 1); 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 { 177ea762338SSteven Whitehouse int error; 178cd915493SSteven Whitehouse u32 id; 179b3b94faaSDavid Teigland 180b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 181b3b94faaSDavid Teigland return -EACCES; 182b3b94faaSDavid Teigland 183b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 184b3b94faaSDavid Teigland 185ea762338SSteven Whitehouse error = gfs2_quota_refresh(sdp, 1, id); 186ea762338SSteven Whitehouse return error ? error : len; 187b3b94faaSDavid Teigland } 188b3b94faaSDavid Teigland 189b3b94faaSDavid Teigland static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, 190b3b94faaSDavid Teigland size_t len) 191b3b94faaSDavid Teigland { 192ea762338SSteven Whitehouse int error; 193cd915493SSteven Whitehouse u32 id; 194b3b94faaSDavid Teigland 195b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 196b3b94faaSDavid Teigland return -EACCES; 197b3b94faaSDavid Teigland 198b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 199b3b94faaSDavid Teigland 200ea762338SSteven Whitehouse error = gfs2_quota_refresh(sdp, 0, id); 201ea762338SSteven Whitehouse return error ? error : len; 202b3b94faaSDavid Teigland } 203b3b94faaSDavid Teigland 20464d576baSSteven Whitehouse static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 20564d576baSSteven Whitehouse { 20664d576baSSteven Whitehouse struct gfs2_glock *gl; 20764d576baSSteven Whitehouse const struct gfs2_glock_operations *glops; 20864d576baSSteven Whitehouse unsigned int glmode; 20964d576baSSteven Whitehouse unsigned int gltype; 21064d576baSSteven Whitehouse unsigned long long glnum; 21164d576baSSteven Whitehouse char mode[16]; 21264d576baSSteven Whitehouse int rv; 21364d576baSSteven Whitehouse 21464d576baSSteven Whitehouse if (!capable(CAP_SYS_ADMIN)) 21564d576baSSteven Whitehouse return -EACCES; 21664d576baSSteven Whitehouse 21764d576baSSteven Whitehouse rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, 21864d576baSSteven Whitehouse mode); 21964d576baSSteven Whitehouse if (rv != 3) 22064d576baSSteven Whitehouse return -EINVAL; 22164d576baSSteven Whitehouse 22264d576baSSteven Whitehouse if (strcmp(mode, "EX") == 0) 22364d576baSSteven Whitehouse glmode = LM_ST_UNLOCKED; 22464d576baSSteven Whitehouse else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) 22564d576baSSteven Whitehouse glmode = LM_ST_DEFERRED; 22664d576baSSteven Whitehouse else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) 22764d576baSSteven Whitehouse glmode = LM_ST_SHARED; 22864d576baSSteven Whitehouse else 22964d576baSSteven Whitehouse return -EINVAL; 23064d576baSSteven Whitehouse 23164d576baSSteven Whitehouse if (gltype > LM_TYPE_JOURNAL) 23264d576baSSteven Whitehouse return -EINVAL; 23364d576baSSteven Whitehouse glops = gfs2_glops_list[gltype]; 23464d576baSSteven Whitehouse if (glops == NULL) 23564d576baSSteven Whitehouse return -EINVAL; 2366a99be5dSSteven Whitehouse if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) 237913a71d2SSteven Whitehouse fs_info(sdp, "demote interface used\n"); 23864d576baSSteven Whitehouse rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); 23964d576baSSteven Whitehouse if (rv) 24064d576baSSteven Whitehouse return rv; 24164d576baSSteven Whitehouse gfs2_glock_cb(gl, glmode); 24264d576baSSteven Whitehouse gfs2_glock_put(gl); 24364d576baSSteven Whitehouse return len; 24464d576baSSteven Whitehouse } 24564d576baSSteven Whitehouse 246b3b94faaSDavid Teigland 247b3b94faaSDavid Teigland #define GFS2_ATTR(name, mode, show, store) \ 248b3b94faaSDavid Teigland static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) 249b3b94faaSDavid Teigland 250b3b94faaSDavid Teigland GFS2_ATTR(id, 0444, id_show, NULL); 251b3b94faaSDavid Teigland GFS2_ATTR(fsname, 0444, fsname_show, NULL); 25202e3cc70SSteven Whitehouse GFS2_ATTR(uuid, 0444, uuid_show, NULL); 253b3b94faaSDavid Teigland GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); 254b3b94faaSDavid Teigland GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 255b3b94faaSDavid Teigland GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); 256b3b94faaSDavid Teigland GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); 257b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); 258b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); 25964d576baSSteven Whitehouse GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); 260b3b94faaSDavid Teigland 261b3b94faaSDavid Teigland static struct attribute *gfs2_attrs[] = { 262b3b94faaSDavid Teigland &gfs2_attr_id.attr, 263b3b94faaSDavid Teigland &gfs2_attr_fsname.attr, 26402e3cc70SSteven Whitehouse &gfs2_attr_uuid.attr, 265b3b94faaSDavid Teigland &gfs2_attr_freeze.attr, 266b3b94faaSDavid Teigland &gfs2_attr_withdraw.attr, 267b3b94faaSDavid Teigland &gfs2_attr_statfs_sync.attr, 268b3b94faaSDavid Teigland &gfs2_attr_quota_sync.attr, 269b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_user.attr, 270b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_group.attr, 27164d576baSSteven Whitehouse &gfs2_attr_demote_rq.attr, 272b3b94faaSDavid Teigland NULL, 273b3b94faaSDavid Teigland }; 274b3b94faaSDavid Teigland 275b3b94faaSDavid Teigland static struct kobj_type gfs2_ktype = { 276b3b94faaSDavid Teigland .default_attrs = gfs2_attrs, 277b3b94faaSDavid Teigland .sysfs_ops = &gfs2_attr_ops, 278b3b94faaSDavid Teigland }; 279b3b94faaSDavid Teigland 280f057f6cdSSteven Whitehouse 281f057f6cdSSteven Whitehouse /* 282f057f6cdSSteven Whitehouse * lock_module. Originally from lock_dlm 283f057f6cdSSteven Whitehouse */ 284f057f6cdSSteven Whitehouse 285f057f6cdSSteven Whitehouse static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) 286f057f6cdSSteven Whitehouse { 287f057f6cdSSteven Whitehouse const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; 288f057f6cdSSteven Whitehouse return sprintf(buf, "%s\n", ops->lm_proto_name); 289f057f6cdSSteven Whitehouse } 290f057f6cdSSteven Whitehouse 291f057f6cdSSteven Whitehouse static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) 292f057f6cdSSteven Whitehouse { 293f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 294f057f6cdSSteven Whitehouse ssize_t ret; 295f057f6cdSSteven Whitehouse int val = 0; 296f057f6cdSSteven Whitehouse 297f057f6cdSSteven Whitehouse if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_flags)) 298f057f6cdSSteven Whitehouse val = 1; 299f057f6cdSSteven Whitehouse ret = sprintf(buf, "%d\n", val); 300f057f6cdSSteven Whitehouse return ret; 301f057f6cdSSteven Whitehouse } 302f057f6cdSSteven Whitehouse 303f057f6cdSSteven Whitehouse static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 304f057f6cdSSteven Whitehouse { 305f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 306f057f6cdSSteven Whitehouse ssize_t ret = len; 307f057f6cdSSteven Whitehouse int val; 308f057f6cdSSteven Whitehouse 309f057f6cdSSteven Whitehouse val = simple_strtol(buf, NULL, 0); 310f057f6cdSSteven Whitehouse 311f057f6cdSSteven Whitehouse if (val == 1) 312f057f6cdSSteven Whitehouse set_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); 313f057f6cdSSteven Whitehouse else if (val == 0) { 314f057f6cdSSteven Whitehouse clear_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); 315f057f6cdSSteven Whitehouse smp_mb__after_clear_bit(); 316f057f6cdSSteven Whitehouse gfs2_glock_thaw(sdp); 317f057f6cdSSteven Whitehouse } else { 318f057f6cdSSteven Whitehouse ret = -EINVAL; 319f057f6cdSSteven Whitehouse } 320f057f6cdSSteven Whitehouse return ret; 321f057f6cdSSteven Whitehouse } 322f057f6cdSSteven Whitehouse 323f057f6cdSSteven Whitehouse static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) 324f057f6cdSSteven Whitehouse { 325f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 326f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first); 327f057f6cdSSteven Whitehouse } 328f057f6cdSSteven Whitehouse 329ba6e9364SSteven Whitehouse static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 330ba6e9364SSteven Whitehouse { 331ba6e9364SSteven Whitehouse unsigned first; 332ba6e9364SSteven Whitehouse int rv; 333ba6e9364SSteven Whitehouse 334ba6e9364SSteven Whitehouse rv = sscanf(buf, "%u", &first); 335ba6e9364SSteven Whitehouse if (rv != 1 || first > 1) 336ba6e9364SSteven Whitehouse return -EINVAL; 337ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 338ba6e9364SSteven Whitehouse rv = -EBUSY; 339ba6e9364SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 340ba6e9364SSteven Whitehouse goto out; 341ba6e9364SSteven Whitehouse rv = -EINVAL; 342ba6e9364SSteven Whitehouse if (sdp->sd_args.ar_spectator) 343ba6e9364SSteven Whitehouse goto out; 344ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 345ba6e9364SSteven Whitehouse goto out; 346ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_first = first; 347ba6e9364SSteven Whitehouse rv = 0; 348ba6e9364SSteven Whitehouse out: 349ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 350ba6e9364SSteven Whitehouse return rv ? rv : len; 351ba6e9364SSteven Whitehouse } 352ba6e9364SSteven Whitehouse 353f057f6cdSSteven Whitehouse static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) 354f057f6cdSSteven Whitehouse { 355f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 356f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first_done); 357f057f6cdSSteven Whitehouse } 358f057f6cdSSteven Whitehouse 359fe64d517SSteven Whitehouse static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 360f057f6cdSSteven Whitehouse { 361fe64d517SSteven Whitehouse unsigned jid; 362f057f6cdSSteven Whitehouse struct gfs2_jdesc *jd; 363fe64d517SSteven Whitehouse int rv; 364f057f6cdSSteven Whitehouse 365fe64d517SSteven Whitehouse rv = sscanf(buf, "%u", &jid); 366fe64d517SSteven Whitehouse if (rv != 1) 367fe64d517SSteven Whitehouse return -EINVAL; 368fe64d517SSteven Whitehouse 369fe64d517SSteven Whitehouse rv = -ESHUTDOWN; 370f057f6cdSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 371fe64d517SSteven Whitehouse if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) 372fe64d517SSteven Whitehouse goto out; 373fe64d517SSteven Whitehouse rv = -EBUSY; 374fe64d517SSteven Whitehouse if (sdp->sd_jdesc->jd_jid == jid) 375fe64d517SSteven Whitehouse goto out; 376fe64d517SSteven Whitehouse rv = -ENOENT; 377f057f6cdSSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 378f057f6cdSSteven Whitehouse if (jd->jd_jid != jid) 379f057f6cdSSteven Whitehouse continue; 3806ecd7c2dSTejun Heo rv = gfs2_recover_journal(jd, false); 381f057f6cdSSteven Whitehouse break; 382f057f6cdSSteven Whitehouse } 383fe64d517SSteven Whitehouse out: 384f057f6cdSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 385fe64d517SSteven Whitehouse return rv ? rv : len; 386f057f6cdSSteven Whitehouse } 387f057f6cdSSteven Whitehouse 388f057f6cdSSteven Whitehouse static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) 389f057f6cdSSteven Whitehouse { 390f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 391f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_done); 392f057f6cdSSteven Whitehouse } 393f057f6cdSSteven Whitehouse 394f057f6cdSSteven Whitehouse static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) 395f057f6cdSSteven Whitehouse { 396f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 397f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_status); 398f057f6cdSSteven Whitehouse } 399f057f6cdSSteven Whitehouse 400e1b28aabSSteven Whitehouse static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) 401e1b28aabSSteven Whitehouse { 402*feb47ca9SSteven Whitehouse return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid); 403e1b28aabSSteven Whitehouse } 404e1b28aabSSteven Whitehouse 405ba6e9364SSteven Whitehouse static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 406ba6e9364SSteven Whitehouse { 407*feb47ca9SSteven Whitehouse int jid; 408ba6e9364SSteven Whitehouse int rv; 409ba6e9364SSteven Whitehouse 410*feb47ca9SSteven Whitehouse rv = sscanf(buf, "%d", &jid); 411ba6e9364SSteven Whitehouse if (rv != 1) 412ba6e9364SSteven Whitehouse return -EINVAL; 413ba6e9364SSteven Whitehouse 414ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 415ba6e9364SSteven Whitehouse rv = -EINVAL; 416ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 417ba6e9364SSteven Whitehouse goto out; 418ba6e9364SSteven Whitehouse rv = -EBUSY; 419*feb47ca9SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 420ba6e9364SSteven Whitehouse goto out; 421*feb47ca9SSteven Whitehouse rv = 0; 422*feb47ca9SSteven Whitehouse if (sdp->sd_args.ar_spectator && jid > 0) 423*feb47ca9SSteven Whitehouse rv = jid = -EINVAL; 424ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_jid = jid; 425*feb47ca9SSteven Whitehouse clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); 426ba6e9364SSteven Whitehouse smp_mb__after_clear_bit(); 427ba6e9364SSteven Whitehouse wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); 428ba6e9364SSteven Whitehouse out: 429ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 430ba6e9364SSteven Whitehouse return rv ? rv : len; 431ba6e9364SSteven Whitehouse } 432ba6e9364SSteven Whitehouse 433f057f6cdSSteven Whitehouse #define GDLM_ATTR(_name,_mode,_show,_store) \ 43448c2b613SSteven Whitehouse static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) 435f057f6cdSSteven Whitehouse 436f057f6cdSSteven Whitehouse GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); 437f057f6cdSSteven Whitehouse GDLM_ATTR(block, 0644, block_show, block_store); 438f057f6cdSSteven Whitehouse GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 439ba6e9364SSteven Whitehouse GDLM_ATTR(jid, 0644, jid_show, jid_store); 440ba6e9364SSteven Whitehouse GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store); 441f057f6cdSSteven Whitehouse GDLM_ATTR(first_done, 0444, first_done_show, NULL); 442d7e623daSSteven Whitehouse GDLM_ATTR(recover, 0600, NULL, recover_store); 443f057f6cdSSteven Whitehouse GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); 444f057f6cdSSteven Whitehouse GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); 445f057f6cdSSteven Whitehouse 446f057f6cdSSteven Whitehouse static struct attribute *lock_module_attrs[] = { 447f057f6cdSSteven Whitehouse &gdlm_attr_proto_name.attr, 448f057f6cdSSteven Whitehouse &gdlm_attr_block.attr, 449f057f6cdSSteven Whitehouse &gdlm_attr_withdraw.attr, 450e1b28aabSSteven Whitehouse &gdlm_attr_jid.attr, 451f057f6cdSSteven Whitehouse &gdlm_attr_first.attr, 452f057f6cdSSteven Whitehouse &gdlm_attr_first_done.attr, 453f057f6cdSSteven Whitehouse &gdlm_attr_recover.attr, 454f057f6cdSSteven Whitehouse &gdlm_attr_recover_done.attr, 455f057f6cdSSteven Whitehouse &gdlm_attr_recover_status.attr, 456ea67eedbSSteven Whitehouse NULL, 457b3b94faaSDavid Teigland }; 458b3b94faaSDavid Teigland 459b3b94faaSDavid Teigland /* 460b3b94faaSDavid Teigland * get and set struct gfs2_tune fields 461b3b94faaSDavid Teigland */ 462b3b94faaSDavid Teigland 463b3b94faaSDavid Teigland static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) 464b3b94faaSDavid Teigland { 4653204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u %u\n", 4663204a6c0SDavid Teigland sdp->sd_tune.gt_quota_scale_num, 467b3b94faaSDavid Teigland sdp->sd_tune.gt_quota_scale_den); 468b3b94faaSDavid Teigland } 469b3b94faaSDavid Teigland 470b3b94faaSDavid Teigland static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, 471b3b94faaSDavid Teigland size_t len) 472b3b94faaSDavid Teigland { 473b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 474b3b94faaSDavid Teigland unsigned int x, y; 475b3b94faaSDavid Teigland 476b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 477b3b94faaSDavid Teigland return -EACCES; 478b3b94faaSDavid Teigland 479b3b94faaSDavid Teigland if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) 480b3b94faaSDavid Teigland return -EINVAL; 481b3b94faaSDavid Teigland 482b3b94faaSDavid Teigland spin_lock(>->gt_spin); 483b3b94faaSDavid Teigland gt->gt_quota_scale_num = x; 484b3b94faaSDavid Teigland gt->gt_quota_scale_den = y; 485b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 486b3b94faaSDavid Teigland return len; 487b3b94faaSDavid Teigland } 488b3b94faaSDavid Teigland 489b3b94faaSDavid Teigland static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, 490b3b94faaSDavid Teigland int check_zero, const char *buf, size_t len) 491b3b94faaSDavid Teigland { 492b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 493b3b94faaSDavid Teigland unsigned int x; 494b3b94faaSDavid Teigland 495b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 496b3b94faaSDavid Teigland return -EACCES; 497b3b94faaSDavid Teigland 498b3b94faaSDavid Teigland x = simple_strtoul(buf, NULL, 0); 499b3b94faaSDavid Teigland 500b3b94faaSDavid Teigland if (check_zero && !x) 501b3b94faaSDavid Teigland return -EINVAL; 502b3b94faaSDavid Teigland 503b3b94faaSDavid Teigland spin_lock(>->gt_spin); 504b3b94faaSDavid Teigland *field = x; 505b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 506b3b94faaSDavid Teigland return len; 507b3b94faaSDavid Teigland } 508b3b94faaSDavid Teigland 509b3b94faaSDavid Teigland #define TUNE_ATTR_3(name, show, store) \ 51048c2b613SSteven Whitehouse static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) 511b3b94faaSDavid Teigland 512b3b94faaSDavid Teigland #define TUNE_ATTR_2(name, store) \ 513b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 514b3b94faaSDavid Teigland { \ 5153204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ 516b3b94faaSDavid Teigland } \ 517b3b94faaSDavid Teigland TUNE_ATTR_3(name, name##_show, store) 518b3b94faaSDavid Teigland 519b3b94faaSDavid Teigland #define TUNE_ATTR(name, check_zero) \ 520b3b94faaSDavid Teigland static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ 521b3b94faaSDavid Teigland { \ 522b3b94faaSDavid Teigland return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ 523b3b94faaSDavid Teigland } \ 524b3b94faaSDavid Teigland TUNE_ATTR_2(name, name##_store) 525b3b94faaSDavid Teigland 526b3b94faaSDavid Teigland TUNE_ATTR(quota_warn_period, 0); 527b3b94faaSDavid Teigland TUNE_ATTR(quota_quantum, 0); 528b3b94faaSDavid Teigland TUNE_ATTR(max_readahead, 0); 529b3b94faaSDavid Teigland TUNE_ATTR(complain_secs, 0); 530b3b94faaSDavid Teigland TUNE_ATTR(statfs_slow, 0); 531b3b94faaSDavid Teigland TUNE_ATTR(new_files_jdata, 0); 532b3b94faaSDavid Teigland TUNE_ATTR(quota_simul_sync, 1); 533b3b94faaSDavid Teigland TUNE_ATTR(statfs_quantum, 1); 534b3b94faaSDavid Teigland TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); 535b3b94faaSDavid Teigland 536b3b94faaSDavid Teigland static struct attribute *tune_attrs[] = { 537b3b94faaSDavid Teigland &tune_attr_quota_warn_period.attr, 538b3b94faaSDavid Teigland &tune_attr_quota_quantum.attr, 539b3b94faaSDavid Teigland &tune_attr_max_readahead.attr, 540b3b94faaSDavid Teigland &tune_attr_complain_secs.attr, 541b3b94faaSDavid Teigland &tune_attr_statfs_slow.attr, 542b3b94faaSDavid Teigland &tune_attr_quota_simul_sync.attr, 543b3b94faaSDavid Teigland &tune_attr_statfs_quantum.attr, 544b3b94faaSDavid Teigland &tune_attr_quota_scale.attr, 545b3b94faaSDavid Teigland &tune_attr_new_files_jdata.attr, 546ea67eedbSSteven Whitehouse NULL, 547b3b94faaSDavid Teigland }; 548b3b94faaSDavid Teigland 549b3b94faaSDavid Teigland static struct attribute_group tune_group = { 550b3b94faaSDavid Teigland .name = "tune", 551ea67eedbSSteven Whitehouse .attrs = tune_attrs, 552b3b94faaSDavid Teigland }; 553b3b94faaSDavid Teigland 554f057f6cdSSteven Whitehouse static struct attribute_group lock_module_group = { 555f057f6cdSSteven Whitehouse .name = "lock_module", 556f057f6cdSSteven Whitehouse .attrs = lock_module_attrs, 557f057f6cdSSteven Whitehouse }; 558f057f6cdSSteven Whitehouse 559b3b94faaSDavid Teigland int gfs2_sys_fs_add(struct gfs2_sbd *sdp) 560b3b94faaSDavid Teigland { 561440d6da2SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 562b3b94faaSDavid Teigland int error; 563440d6da2SSteven Whitehouse char ro[20]; 564440d6da2SSteven Whitehouse char spectator[20]; 565440d6da2SSteven Whitehouse char *envp[] = { ro, spectator, NULL }; 566440d6da2SSteven Whitehouse 567440d6da2SSteven Whitehouse sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); 568440d6da2SSteven Whitehouse sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); 569b3b94faaSDavid Teigland 5709bec101aSGreg Kroah-Hartman sdp->sd_kobj.kset = gfs2_kset; 571901195edSGreg Kroah-Hartman error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, 572901195edSGreg Kroah-Hartman "%s", sdp->sd_table_name); 573b3b94faaSDavid Teigland if (error) 574b3b94faaSDavid Teigland goto fail; 575b3b94faaSDavid Teigland 576b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &tune_group); 577b3b94faaSDavid Teigland if (error) 578f6eb5349SSteven Whitehouse goto fail_reg; 579b3b94faaSDavid Teigland 580f057f6cdSSteven Whitehouse error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); 581f057f6cdSSteven Whitehouse if (error) 582f057f6cdSSteven Whitehouse goto fail_tune; 583f057f6cdSSteven Whitehouse 58431e54b01SSteven Whitehouse error = sysfs_create_link(&sdp->sd_kobj, 58531e54b01SSteven Whitehouse &disk_to_dev(sb->s_bdev->bd_disk)->kobj, 58631e54b01SSteven Whitehouse "device"); 58731e54b01SSteven Whitehouse if (error) 58831e54b01SSteven Whitehouse goto fail_lock_module; 58931e54b01SSteven Whitehouse 590440d6da2SSteven Whitehouse kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); 591b3b94faaSDavid Teigland return 0; 592b3b94faaSDavid Teigland 59331e54b01SSteven Whitehouse fail_lock_module: 59431e54b01SSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 595f057f6cdSSteven Whitehouse fail_tune: 596f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &tune_group); 597b3b94faaSDavid Teigland fail_reg: 598197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 599b3b94faaSDavid Teigland fail: 60065952fb4SDavid Teigland fs_err(sdp, "error %d adding sysfs files", error); 601b3b94faaSDavid Teigland return error; 602b3b94faaSDavid Teigland } 603b3b94faaSDavid Teigland 604b3b94faaSDavid Teigland void gfs2_sys_fs_del(struct gfs2_sbd *sdp) 605b3b94faaSDavid Teigland { 60631e54b01SSteven Whitehouse sysfs_remove_link(&sdp->sd_kobj, "device"); 607b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &tune_group); 608f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 609197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 610b3b94faaSDavid Teigland } 611b3b94faaSDavid Teigland 612fdd1062eSSteven Whitehouse static int gfs2_uevent(struct kset *kset, struct kobject *kobj, 613fdd1062eSSteven Whitehouse struct kobj_uevent_env *env) 614fdd1062eSSteven Whitehouse { 615fdd1062eSSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 61602e3cc70SSteven Whitehouse const u8 *uuid = sdp->sd_sb.sb_uuid; 61702e3cc70SSteven Whitehouse 618fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); 619fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); 620ba6e9364SSteven Whitehouse if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags)) 621*feb47ca9SSteven Whitehouse add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid); 622f0b34ae6SJoe Perches if (gfs2_uuid_valid(uuid)) 623f0b34ae6SJoe Perches add_uevent_var(env, "UUID=%pUB", uuid); 624fdd1062eSSteven Whitehouse return 0; 625fdd1062eSSteven Whitehouse } 626fdd1062eSSteven Whitehouse 6279cd43611SEmese Revfy static const struct kset_uevent_ops gfs2_uevent_ops = { 628fdd1062eSSteven Whitehouse .uevent = gfs2_uevent, 629fdd1062eSSteven Whitehouse }; 630fdd1062eSSteven Whitehouse 631b3b94faaSDavid Teigland int gfs2_sys_init(void) 632b3b94faaSDavid Teigland { 633fdd1062eSSteven Whitehouse gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); 6349bec101aSGreg Kroah-Hartman if (!gfs2_kset) 6359bec101aSGreg Kroah-Hartman return -ENOMEM; 6369bec101aSGreg Kroah-Hartman return 0; 637b3b94faaSDavid Teigland } 638b3b94faaSDavid Teigland 639b3b94faaSDavid Teigland void gfs2_sys_uninit(void) 640b3b94faaSDavid Teigland { 6419bec101aSGreg Kroah-Hartman kset_unregister(gfs2_kset); 642b3b94faaSDavid Teigland } 643b3b94faaSDavid Teigland 644