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/slab.h> 12b3b94faaSDavid Teigland #include <linux/spinlock.h> 13b3b94faaSDavid Teigland #include <linux/completion.h> 14b3b94faaSDavid Teigland #include <linux/buffer_head.h> 15b3b94faaSDavid Teigland #include <linux/module.h> 16b3b94faaSDavid Teigland #include <linux/kobject.h> 17b3b94faaSDavid Teigland #include <asm/uaccess.h> 18f057f6cdSSteven Whitehouse #include <linux/gfs2_ondisk.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" 28b3b94faaSDavid Teigland 2948c2b613SSteven Whitehouse struct gfs2_attr { 3048c2b613SSteven Whitehouse struct attribute attr; 3148c2b613SSteven Whitehouse ssize_t (*show)(struct gfs2_sbd *, char *); 3248c2b613SSteven Whitehouse ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); 3348c2b613SSteven Whitehouse }; 3448c2b613SSteven Whitehouse 3548c2b613SSteven Whitehouse static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, 3648c2b613SSteven Whitehouse char *buf) 3748c2b613SSteven Whitehouse { 3848c2b613SSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 3948c2b613SSteven Whitehouse struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); 4048c2b613SSteven Whitehouse return a->show ? a->show(sdp, buf) : 0; 4148c2b613SSteven Whitehouse } 4248c2b613SSteven Whitehouse 4348c2b613SSteven Whitehouse static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, 4448c2b613SSteven Whitehouse const char *buf, size_t len) 4548c2b613SSteven Whitehouse { 4648c2b613SSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 4748c2b613SSteven Whitehouse struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); 4848c2b613SSteven Whitehouse return a->store ? a->store(sdp, buf, len) : len; 4948c2b613SSteven Whitehouse } 5048c2b613SSteven Whitehouse 5148c2b613SSteven Whitehouse static struct sysfs_ops gfs2_attr_ops = { 5248c2b613SSteven Whitehouse .show = gfs2_attr_show, 5348c2b613SSteven Whitehouse .store = gfs2_attr_store, 5448c2b613SSteven Whitehouse }; 5548c2b613SSteven Whitehouse 5648c2b613SSteven Whitehouse 5748c2b613SSteven Whitehouse static struct kset *gfs2_kset; 5848c2b613SSteven Whitehouse 59b3b94faaSDavid Teigland static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) 60b3b94faaSDavid Teigland { 61c7227e46SBob Peterson return snprintf(buf, PAGE_SIZE, "%u:%u\n", 62c7227e46SBob Peterson MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev)); 63b3b94faaSDavid Teigland } 64b3b94faaSDavid Teigland 65b3b94faaSDavid Teigland static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) 66b3b94faaSDavid Teigland { 673204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname); 68b3b94faaSDavid Teigland } 69b3b94faaSDavid Teigland 7002e3cc70SSteven Whitehouse static int gfs2_uuid_valid(const u8 *uuid) 7102e3cc70SSteven Whitehouse { 7202e3cc70SSteven Whitehouse int i; 7302e3cc70SSteven Whitehouse 7402e3cc70SSteven Whitehouse for (i = 0; i < 16; i++) { 7502e3cc70SSteven Whitehouse if (uuid[i]) 7602e3cc70SSteven Whitehouse return 1; 7702e3cc70SSteven Whitehouse } 7802e3cc70SSteven Whitehouse return 0; 7902e3cc70SSteven Whitehouse } 8002e3cc70SSteven Whitehouse 8102e3cc70SSteven Whitehouse static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf) 8202e3cc70SSteven Whitehouse { 8302e3cc70SSteven Whitehouse const u8 *uuid = sdp->sd_sb.sb_uuid; 8402e3cc70SSteven Whitehouse buf[0] = '\0'; 8502e3cc70SSteven Whitehouse if (!gfs2_uuid_valid(uuid)) 8602e3cc70SSteven Whitehouse return 0; 8702e3cc70SSteven Whitehouse return snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X-%02X%02X-" 8802e3cc70SSteven Whitehouse "%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n", 8902e3cc70SSteven Whitehouse uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5], 9002e3cc70SSteven Whitehouse uuid[6], uuid[7], uuid[8], uuid[9], uuid[10], uuid[11], 9102e3cc70SSteven Whitehouse uuid[12], uuid[13], uuid[14], uuid[15]); 9202e3cc70SSteven Whitehouse } 9302e3cc70SSteven Whitehouse 94b3b94faaSDavid Teigland static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) 95b3b94faaSDavid Teigland { 96b3b94faaSDavid Teigland unsigned int count; 97b3b94faaSDavid Teigland 98f55ab26aSSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 99b3b94faaSDavid Teigland count = sdp->sd_freeze_count; 100f55ab26aSSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 101b3b94faaSDavid Teigland 1023204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", count); 103b3b94faaSDavid Teigland } 104b3b94faaSDavid Teigland 105b3b94faaSDavid Teigland static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 106b3b94faaSDavid Teigland { 107b3b94faaSDavid Teigland ssize_t ret = len; 108b3b94faaSDavid Teigland int error = 0; 109b3b94faaSDavid Teigland int n = simple_strtol(buf, NULL, 0); 110b3b94faaSDavid Teigland 111b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 112b3b94faaSDavid Teigland return -EACCES; 113b3b94faaSDavid Teigland 114b3b94faaSDavid Teigland switch (n) { 115b3b94faaSDavid Teigland case 0: 116b3b94faaSDavid Teigland gfs2_unfreeze_fs(sdp); 117b3b94faaSDavid Teigland break; 118b3b94faaSDavid Teigland case 1: 119b3b94faaSDavid Teigland error = gfs2_freeze_fs(sdp); 120b3b94faaSDavid Teigland break; 121b3b94faaSDavid Teigland default: 122b3b94faaSDavid Teigland ret = -EINVAL; 123b3b94faaSDavid Teigland } 124b3b94faaSDavid Teigland 125b3b94faaSDavid Teigland if (error) 126b3b94faaSDavid Teigland fs_warn(sdp, "freeze %d error %d", n, error); 127b3b94faaSDavid Teigland 128b3b94faaSDavid Teigland return ret; 129b3b94faaSDavid Teigland } 130b3b94faaSDavid Teigland 131b3b94faaSDavid Teigland static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) 132b3b94faaSDavid Teigland { 133b3b94faaSDavid Teigland unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); 1343204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", b); 135b3b94faaSDavid Teigland } 136b3b94faaSDavid Teigland 137b3b94faaSDavid Teigland static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 138b3b94faaSDavid Teigland { 139b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 140b3b94faaSDavid Teigland return -EACCES; 141b3b94faaSDavid Teigland 142b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 143b3b94faaSDavid Teigland return -EINVAL; 144b3b94faaSDavid Teigland 145b3b94faaSDavid Teigland gfs2_lm_withdraw(sdp, 146b3b94faaSDavid Teigland "GFS2: fsid=%s: withdrawing from cluster at user's request\n", 147b3b94faaSDavid Teigland sdp->sd_fsname); 148b3b94faaSDavid Teigland return len; 149b3b94faaSDavid Teigland } 150b3b94faaSDavid Teigland 151b3b94faaSDavid Teigland static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, 152b3b94faaSDavid Teigland size_t len) 153b3b94faaSDavid Teigland { 154b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 155b3b94faaSDavid Teigland return -EACCES; 156b3b94faaSDavid Teigland 157b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 158b3b94faaSDavid Teigland return -EINVAL; 159b3b94faaSDavid Teigland 160b3b94faaSDavid Teigland gfs2_statfs_sync(sdp); 161b3b94faaSDavid Teigland return len; 162b3b94faaSDavid Teigland } 163b3b94faaSDavid Teigland 164b3b94faaSDavid Teigland static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, 165b3b94faaSDavid Teigland size_t len) 166b3b94faaSDavid Teigland { 167b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 168b3b94faaSDavid Teigland return -EACCES; 169b3b94faaSDavid Teigland 170b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 171b3b94faaSDavid Teigland return -EINVAL; 172b3b94faaSDavid Teigland 173b3b94faaSDavid Teigland gfs2_quota_sync(sdp); 174b3b94faaSDavid Teigland return len; 175b3b94faaSDavid Teigland } 176b3b94faaSDavid Teigland 177b3b94faaSDavid Teigland static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, 178b3b94faaSDavid Teigland size_t len) 179b3b94faaSDavid Teigland { 180cd915493SSteven Whitehouse u32 id; 181b3b94faaSDavid Teigland 182b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 183b3b94faaSDavid Teigland return -EACCES; 184b3b94faaSDavid Teigland 185b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 186b3b94faaSDavid Teigland 187b3b94faaSDavid Teigland gfs2_quota_refresh(sdp, 1, id); 188b3b94faaSDavid Teigland return len; 189b3b94faaSDavid Teigland } 190b3b94faaSDavid Teigland 191b3b94faaSDavid Teigland static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, 192b3b94faaSDavid Teigland size_t len) 193b3b94faaSDavid Teigland { 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 201b3b94faaSDavid Teigland gfs2_quota_refresh(sdp, 0, id); 202b3b94faaSDavid Teigland return 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; 23464d576baSSteven Whitehouse glops = gfs2_glops_list[gltype]; 23564d576baSSteven Whitehouse if (glops == NULL) 23664d576baSSteven Whitehouse return -EINVAL; 23764d576baSSteven Whitehouse rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); 23864d576baSSteven Whitehouse if (rv) 23964d576baSSteven Whitehouse return rv; 24064d576baSSteven Whitehouse gfs2_glock_cb(gl, glmode); 24164d576baSSteven Whitehouse gfs2_glock_put(gl); 24264d576baSSteven Whitehouse return len; 24364d576baSSteven Whitehouse } 24464d576baSSteven Whitehouse 245b3b94faaSDavid Teigland 246b3b94faaSDavid Teigland #define GFS2_ATTR(name, mode, show, store) \ 247b3b94faaSDavid Teigland static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) 248b3b94faaSDavid Teigland 249b3b94faaSDavid Teigland GFS2_ATTR(id, 0444, id_show, NULL); 250b3b94faaSDavid Teigland GFS2_ATTR(fsname, 0444, fsname_show, NULL); 25102e3cc70SSteven Whitehouse GFS2_ATTR(uuid, 0444, uuid_show, NULL); 252b3b94faaSDavid Teigland GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); 253b3b94faaSDavid Teigland GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 254b3b94faaSDavid Teigland GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); 255b3b94faaSDavid Teigland GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); 256b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); 257b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); 25864d576baSSteven Whitehouse GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); 259b3b94faaSDavid Teigland 260b3b94faaSDavid Teigland static struct attribute *gfs2_attrs[] = { 261b3b94faaSDavid Teigland &gfs2_attr_id.attr, 262b3b94faaSDavid Teigland &gfs2_attr_fsname.attr, 26302e3cc70SSteven Whitehouse &gfs2_attr_uuid.attr, 264b3b94faaSDavid Teigland &gfs2_attr_freeze.attr, 265b3b94faaSDavid Teigland &gfs2_attr_withdraw.attr, 266b3b94faaSDavid Teigland &gfs2_attr_statfs_sync.attr, 267b3b94faaSDavid Teigland &gfs2_attr_quota_sync.attr, 268b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_user.attr, 269b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_group.attr, 27064d576baSSteven Whitehouse &gfs2_attr_demote_rq.attr, 271b3b94faaSDavid Teigland NULL, 272b3b94faaSDavid Teigland }; 273b3b94faaSDavid Teigland 274b3b94faaSDavid Teigland static struct kobj_type gfs2_ktype = { 275b3b94faaSDavid Teigland .default_attrs = gfs2_attrs, 276b3b94faaSDavid Teigland .sysfs_ops = &gfs2_attr_ops, 277b3b94faaSDavid Teigland }; 278b3b94faaSDavid Teigland 279f057f6cdSSteven Whitehouse 280f057f6cdSSteven Whitehouse /* 281f057f6cdSSteven Whitehouse * lock_module. Originally from lock_dlm 282f057f6cdSSteven Whitehouse */ 283f057f6cdSSteven Whitehouse 284f057f6cdSSteven Whitehouse static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) 285f057f6cdSSteven Whitehouse { 286f057f6cdSSteven Whitehouse const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; 287f057f6cdSSteven Whitehouse return sprintf(buf, "%s\n", ops->lm_proto_name); 288f057f6cdSSteven Whitehouse } 289f057f6cdSSteven Whitehouse 290f057f6cdSSteven Whitehouse static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) 291f057f6cdSSteven Whitehouse { 292f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 293f057f6cdSSteven Whitehouse ssize_t ret; 294f057f6cdSSteven Whitehouse int val = 0; 295f057f6cdSSteven Whitehouse 296f057f6cdSSteven Whitehouse if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_flags)) 297f057f6cdSSteven Whitehouse val = 1; 298f057f6cdSSteven Whitehouse ret = sprintf(buf, "%d\n", val); 299f057f6cdSSteven Whitehouse return ret; 300f057f6cdSSteven Whitehouse } 301f057f6cdSSteven Whitehouse 302f057f6cdSSteven Whitehouse static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 303f057f6cdSSteven Whitehouse { 304f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 305f057f6cdSSteven Whitehouse ssize_t ret = len; 306f057f6cdSSteven Whitehouse int val; 307f057f6cdSSteven Whitehouse 308f057f6cdSSteven Whitehouse val = simple_strtol(buf, NULL, 0); 309f057f6cdSSteven Whitehouse 310f057f6cdSSteven Whitehouse if (val == 1) 311f057f6cdSSteven Whitehouse set_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); 312f057f6cdSSteven Whitehouse else if (val == 0) { 313f057f6cdSSteven Whitehouse clear_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); 314f057f6cdSSteven Whitehouse smp_mb__after_clear_bit(); 315f057f6cdSSteven Whitehouse gfs2_glock_thaw(sdp); 316f057f6cdSSteven Whitehouse } else { 317f057f6cdSSteven Whitehouse ret = -EINVAL; 318f057f6cdSSteven Whitehouse } 319f057f6cdSSteven Whitehouse return ret; 320f057f6cdSSteven Whitehouse } 321f057f6cdSSteven Whitehouse 322f057f6cdSSteven Whitehouse static ssize_t lkid_show(struct gfs2_sbd *sdp, char *buf) 323f057f6cdSSteven Whitehouse { 324f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 325f057f6cdSSteven Whitehouse return sprintf(buf, "%u\n", ls->ls_id); 326f057f6cdSSteven Whitehouse } 327f057f6cdSSteven Whitehouse 328f057f6cdSSteven Whitehouse static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) 329f057f6cdSSteven Whitehouse { 330f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 331f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first); 332f057f6cdSSteven Whitehouse } 333f057f6cdSSteven Whitehouse 334f057f6cdSSteven Whitehouse static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) 335f057f6cdSSteven Whitehouse { 336f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 337f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first_done); 338f057f6cdSSteven Whitehouse } 339f057f6cdSSteven Whitehouse 340fe64d517SSteven Whitehouse static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 341f057f6cdSSteven Whitehouse { 342fe64d517SSteven Whitehouse unsigned jid; 343f057f6cdSSteven Whitehouse struct gfs2_jdesc *jd; 344fe64d517SSteven Whitehouse int rv; 345f057f6cdSSteven Whitehouse 346fe64d517SSteven Whitehouse rv = sscanf(buf, "%u", &jid); 347fe64d517SSteven Whitehouse if (rv != 1) 348fe64d517SSteven Whitehouse return -EINVAL; 349fe64d517SSteven Whitehouse 350fe64d517SSteven Whitehouse rv = -ESHUTDOWN; 351f057f6cdSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 352fe64d517SSteven Whitehouse if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) 353fe64d517SSteven Whitehouse goto out; 354fe64d517SSteven Whitehouse rv = -EBUSY; 355fe64d517SSteven Whitehouse if (sdp->sd_jdesc->jd_jid == jid) 356fe64d517SSteven Whitehouse goto out; 357fe64d517SSteven Whitehouse rv = -ENOENT; 358f057f6cdSSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 359f057f6cdSSteven Whitehouse if (jd->jd_jid != jid) 360f057f6cdSSteven Whitehouse continue; 361fe64d517SSteven Whitehouse rv = slow_work_enqueue(&jd->jd_work); 362f057f6cdSSteven Whitehouse break; 363f057f6cdSSteven Whitehouse } 364fe64d517SSteven Whitehouse out: 365f057f6cdSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 366fe64d517SSteven Whitehouse return rv ? rv : len; 367f057f6cdSSteven Whitehouse } 368f057f6cdSSteven Whitehouse 369f057f6cdSSteven Whitehouse static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) 370f057f6cdSSteven Whitehouse { 371f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 372f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_done); 373f057f6cdSSteven Whitehouse } 374f057f6cdSSteven Whitehouse 375f057f6cdSSteven Whitehouse static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) 376f057f6cdSSteven Whitehouse { 377f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 378f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_status); 379f057f6cdSSteven Whitehouse } 380f057f6cdSSteven Whitehouse 381e1b28aabSSteven Whitehouse static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) 382e1b28aabSSteven Whitehouse { 383e1b28aabSSteven Whitehouse return sprintf(buf, "%u\n", sdp->sd_lockstruct.ls_jid); 384e1b28aabSSteven Whitehouse } 385e1b28aabSSteven Whitehouse 386f057f6cdSSteven Whitehouse #define GDLM_ATTR(_name,_mode,_show,_store) \ 38748c2b613SSteven Whitehouse static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) 388f057f6cdSSteven Whitehouse 389f057f6cdSSteven Whitehouse GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); 390f057f6cdSSteven Whitehouse GDLM_ATTR(block, 0644, block_show, block_store); 391f057f6cdSSteven Whitehouse GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 392f057f6cdSSteven Whitehouse GDLM_ATTR(id, 0444, lkid_show, NULL); 393e1b28aabSSteven Whitehouse GDLM_ATTR(jid, 0444, jid_show, NULL); 394f057f6cdSSteven Whitehouse GDLM_ATTR(first, 0444, lkfirst_show, NULL); 395f057f6cdSSteven Whitehouse GDLM_ATTR(first_done, 0444, first_done_show, NULL); 396*d7e623daSSteven Whitehouse GDLM_ATTR(recover, 0600, NULL, recover_store); 397f057f6cdSSteven Whitehouse GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); 398f057f6cdSSteven Whitehouse GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); 399f057f6cdSSteven Whitehouse 400f057f6cdSSteven Whitehouse static struct attribute *lock_module_attrs[] = { 401f057f6cdSSteven Whitehouse &gdlm_attr_proto_name.attr, 402f057f6cdSSteven Whitehouse &gdlm_attr_block.attr, 403f057f6cdSSteven Whitehouse &gdlm_attr_withdraw.attr, 404f057f6cdSSteven Whitehouse &gdlm_attr_id.attr, 405e1b28aabSSteven Whitehouse &gdlm_attr_jid.attr, 406f057f6cdSSteven Whitehouse &gdlm_attr_first.attr, 407f057f6cdSSteven Whitehouse &gdlm_attr_first_done.attr, 408f057f6cdSSteven Whitehouse &gdlm_attr_recover.attr, 409f057f6cdSSteven Whitehouse &gdlm_attr_recover_done.attr, 410f057f6cdSSteven Whitehouse &gdlm_attr_recover_status.attr, 411ea67eedbSSteven Whitehouse NULL, 412b3b94faaSDavid Teigland }; 413b3b94faaSDavid Teigland 414b3b94faaSDavid Teigland /* 415b3b94faaSDavid Teigland * get and set struct gfs2_tune fields 416b3b94faaSDavid Teigland */ 417b3b94faaSDavid Teigland 418b3b94faaSDavid Teigland static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) 419b3b94faaSDavid Teigland { 4203204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u %u\n", 4213204a6c0SDavid Teigland sdp->sd_tune.gt_quota_scale_num, 422b3b94faaSDavid Teigland sdp->sd_tune.gt_quota_scale_den); 423b3b94faaSDavid Teigland } 424b3b94faaSDavid Teigland 425b3b94faaSDavid Teigland static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, 426b3b94faaSDavid Teigland size_t len) 427b3b94faaSDavid Teigland { 428b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 429b3b94faaSDavid Teigland unsigned int x, y; 430b3b94faaSDavid Teigland 431b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 432b3b94faaSDavid Teigland return -EACCES; 433b3b94faaSDavid Teigland 434b3b94faaSDavid Teigland if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) 435b3b94faaSDavid Teigland return -EINVAL; 436b3b94faaSDavid Teigland 437b3b94faaSDavid Teigland spin_lock(>->gt_spin); 438b3b94faaSDavid Teigland gt->gt_quota_scale_num = x; 439b3b94faaSDavid Teigland gt->gt_quota_scale_den = y; 440b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 441b3b94faaSDavid Teigland return len; 442b3b94faaSDavid Teigland } 443b3b94faaSDavid Teigland 444b3b94faaSDavid Teigland static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, 445b3b94faaSDavid Teigland int check_zero, const char *buf, size_t len) 446b3b94faaSDavid Teigland { 447b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 448b3b94faaSDavid Teigland unsigned int x; 449b3b94faaSDavid Teigland 450b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 451b3b94faaSDavid Teigland return -EACCES; 452b3b94faaSDavid Teigland 453b3b94faaSDavid Teigland x = simple_strtoul(buf, NULL, 0); 454b3b94faaSDavid Teigland 455b3b94faaSDavid Teigland if (check_zero && !x) 456b3b94faaSDavid Teigland return -EINVAL; 457b3b94faaSDavid Teigland 458b3b94faaSDavid Teigland spin_lock(>->gt_spin); 459b3b94faaSDavid Teigland *field = x; 460b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 461b3b94faaSDavid Teigland return len; 462b3b94faaSDavid Teigland } 463b3b94faaSDavid Teigland 464b3b94faaSDavid Teigland #define TUNE_ATTR_3(name, show, store) \ 46548c2b613SSteven Whitehouse static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) 466b3b94faaSDavid Teigland 467b3b94faaSDavid Teigland #define TUNE_ATTR_2(name, store) \ 468b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 469b3b94faaSDavid Teigland { \ 4703204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ 471b3b94faaSDavid Teigland } \ 472b3b94faaSDavid Teigland TUNE_ATTR_3(name, name##_show, store) 473b3b94faaSDavid Teigland 474b3b94faaSDavid Teigland #define TUNE_ATTR(name, check_zero) \ 475b3b94faaSDavid Teigland static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ 476b3b94faaSDavid Teigland { \ 477b3b94faaSDavid Teigland return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ 478b3b94faaSDavid Teigland } \ 479b3b94faaSDavid Teigland TUNE_ATTR_2(name, name##_store) 480b3b94faaSDavid Teigland 481b3b94faaSDavid Teigland TUNE_ATTR(incore_log_blocks, 0); 482b3b94faaSDavid Teigland TUNE_ATTR(log_flush_secs, 0); 483b3b94faaSDavid Teigland TUNE_ATTR(quota_warn_period, 0); 484b3b94faaSDavid Teigland TUNE_ATTR(quota_quantum, 0); 485b3b94faaSDavid Teigland TUNE_ATTR(max_readahead, 0); 486b3b94faaSDavid Teigland TUNE_ATTR(complain_secs, 0); 487b3b94faaSDavid Teigland TUNE_ATTR(statfs_slow, 0); 488b3b94faaSDavid Teigland TUNE_ATTR(new_files_jdata, 0); 489b3b94faaSDavid Teigland TUNE_ATTR(quota_simul_sync, 1); 490b3b94faaSDavid Teigland TUNE_ATTR(stall_secs, 1); 491b3b94faaSDavid Teigland TUNE_ATTR(statfs_quantum, 1); 492b3b94faaSDavid Teigland TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); 493b3b94faaSDavid Teigland 494b3b94faaSDavid Teigland static struct attribute *tune_attrs[] = { 495b3b94faaSDavid Teigland &tune_attr_incore_log_blocks.attr, 496b3b94faaSDavid Teigland &tune_attr_log_flush_secs.attr, 497b3b94faaSDavid Teigland &tune_attr_quota_warn_period.attr, 498b3b94faaSDavid Teigland &tune_attr_quota_quantum.attr, 499b3b94faaSDavid Teigland &tune_attr_max_readahead.attr, 500b3b94faaSDavid Teigland &tune_attr_complain_secs.attr, 501b3b94faaSDavid Teigland &tune_attr_statfs_slow.attr, 502b3b94faaSDavid Teigland &tune_attr_quota_simul_sync.attr, 503b3b94faaSDavid Teigland &tune_attr_stall_secs.attr, 504b3b94faaSDavid Teigland &tune_attr_statfs_quantum.attr, 505b3b94faaSDavid Teigland &tune_attr_quota_scale.attr, 506b3b94faaSDavid Teigland &tune_attr_new_files_jdata.attr, 507ea67eedbSSteven Whitehouse NULL, 508b3b94faaSDavid Teigland }; 509b3b94faaSDavid Teigland 510b3b94faaSDavid Teigland static struct attribute_group tune_group = { 511b3b94faaSDavid Teigland .name = "tune", 512ea67eedbSSteven Whitehouse .attrs = tune_attrs, 513b3b94faaSDavid Teigland }; 514b3b94faaSDavid Teigland 515f057f6cdSSteven Whitehouse static struct attribute_group lock_module_group = { 516f057f6cdSSteven Whitehouse .name = "lock_module", 517f057f6cdSSteven Whitehouse .attrs = lock_module_attrs, 518f057f6cdSSteven Whitehouse }; 519f057f6cdSSteven Whitehouse 520b3b94faaSDavid Teigland int gfs2_sys_fs_add(struct gfs2_sbd *sdp) 521b3b94faaSDavid Teigland { 522b3b94faaSDavid Teigland int error; 523b3b94faaSDavid Teigland 5249bec101aSGreg Kroah-Hartman sdp->sd_kobj.kset = gfs2_kset; 525901195edSGreg Kroah-Hartman error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, 526901195edSGreg Kroah-Hartman "%s", sdp->sd_table_name); 527b3b94faaSDavid Teigland if (error) 528b3b94faaSDavid Teigland goto fail; 529b3b94faaSDavid Teigland 530b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &tune_group); 531b3b94faaSDavid Teigland if (error) 532f6eb5349SSteven Whitehouse goto fail_reg; 533b3b94faaSDavid Teigland 534f057f6cdSSteven Whitehouse error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); 535f057f6cdSSteven Whitehouse if (error) 536f057f6cdSSteven Whitehouse goto fail_tune; 537f057f6cdSSteven Whitehouse 538901195edSGreg Kroah-Hartman kobject_uevent(&sdp->sd_kobj, KOBJ_ADD); 539b3b94faaSDavid Teigland return 0; 540b3b94faaSDavid Teigland 541f057f6cdSSteven Whitehouse fail_tune: 542f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &tune_group); 543b3b94faaSDavid Teigland fail_reg: 544197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 545b3b94faaSDavid Teigland fail: 54665952fb4SDavid Teigland fs_err(sdp, "error %d adding sysfs files", error); 547b3b94faaSDavid Teigland return error; 548b3b94faaSDavid Teigland } 549b3b94faaSDavid Teigland 550b3b94faaSDavid Teigland void gfs2_sys_fs_del(struct gfs2_sbd *sdp) 551b3b94faaSDavid Teigland { 552b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &tune_group); 553f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 554197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 555b3b94faaSDavid Teigland } 556b3b94faaSDavid Teigland 55702e3cc70SSteven Whitehouse 558fdd1062eSSteven Whitehouse static int gfs2_uevent(struct kset *kset, struct kobject *kobj, 559fdd1062eSSteven Whitehouse struct kobj_uevent_env *env) 560fdd1062eSSteven Whitehouse { 561fdd1062eSSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 56202e3cc70SSteven Whitehouse const u8 *uuid = sdp->sd_sb.sb_uuid; 56302e3cc70SSteven Whitehouse 564fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); 565fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); 56602e3cc70SSteven Whitehouse if (gfs2_uuid_valid(uuid)) { 56702e3cc70SSteven Whitehouse add_uevent_var(env, "UUID=%02X%02X%02X%02X-%02X%02X-%02X%02X-" 56802e3cc70SSteven Whitehouse "%02X%02X-%02X%02X%02X%02X%02X%02X", 56902e3cc70SSteven Whitehouse uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], 57002e3cc70SSteven Whitehouse uuid[5], uuid[6], uuid[7], uuid[8], uuid[9], 57102e3cc70SSteven Whitehouse uuid[10], uuid[11], uuid[12], uuid[13], 57202e3cc70SSteven Whitehouse uuid[14], uuid[15]); 57302e3cc70SSteven Whitehouse } 574fdd1062eSSteven Whitehouse return 0; 575fdd1062eSSteven Whitehouse } 576fdd1062eSSteven Whitehouse 577fdd1062eSSteven Whitehouse static struct kset_uevent_ops gfs2_uevent_ops = { 578fdd1062eSSteven Whitehouse .uevent = gfs2_uevent, 579fdd1062eSSteven Whitehouse }; 580fdd1062eSSteven Whitehouse 581fdd1062eSSteven Whitehouse 582b3b94faaSDavid Teigland int gfs2_sys_init(void) 583b3b94faaSDavid Teigland { 584fdd1062eSSteven Whitehouse gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); 5859bec101aSGreg Kroah-Hartman if (!gfs2_kset) 5869bec101aSGreg Kroah-Hartman return -ENOMEM; 5879bec101aSGreg Kroah-Hartman return 0; 588b3b94faaSDavid Teigland } 589b3b94faaSDavid Teigland 590b3b94faaSDavid Teigland void gfs2_sys_uninit(void) 591b3b94faaSDavid Teigland { 5929bec101aSGreg Kroah-Hartman kset_unregister(gfs2_kset); 593b3b94faaSDavid Teigland } 594b3b94faaSDavid Teigland 595