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> 19*31e54b01SSteven Whitehouse #include <linux/genhd.h> 20b3b94faaSDavid Teigland 21b3b94faaSDavid Teigland #include "gfs2.h" 225c676f6dSSteven Whitehouse #include "incore.h" 23b3b94faaSDavid Teigland #include "sys.h" 24b3b94faaSDavid Teigland #include "super.h" 25b3b94faaSDavid Teigland #include "glock.h" 26b3b94faaSDavid Teigland #include "quota.h" 275c676f6dSSteven Whitehouse #include "util.h" 2864d576baSSteven Whitehouse #include "glops.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 5248c2b613SSteven Whitehouse static 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; 8802e3cc70SSteven Whitehouse return snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X-%02X%02X-" 8902e3cc70SSteven Whitehouse "%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n", 9002e3cc70SSteven Whitehouse uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5], 9102e3cc70SSteven Whitehouse uuid[6], uuid[7], uuid[8], uuid[9], uuid[10], uuid[11], 9202e3cc70SSteven Whitehouse uuid[12], uuid[13], uuid[14], uuid[15]); 9302e3cc70SSteven Whitehouse } 9402e3cc70SSteven Whitehouse 95b3b94faaSDavid Teigland static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) 96b3b94faaSDavid Teigland { 97b3b94faaSDavid Teigland unsigned int count; 98b3b94faaSDavid Teigland 99f55ab26aSSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 100b3b94faaSDavid Teigland count = sdp->sd_freeze_count; 101f55ab26aSSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 102b3b94faaSDavid Teigland 1033204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", count); 104b3b94faaSDavid Teigland } 105b3b94faaSDavid Teigland 106b3b94faaSDavid Teigland static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 107b3b94faaSDavid Teigland { 108b3b94faaSDavid Teigland ssize_t ret = len; 109b3b94faaSDavid Teigland int error = 0; 110b3b94faaSDavid Teigland int n = simple_strtol(buf, NULL, 0); 111b3b94faaSDavid Teigland 112b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 113b3b94faaSDavid Teigland return -EACCES; 114b3b94faaSDavid Teigland 115b3b94faaSDavid Teigland switch (n) { 116b3b94faaSDavid Teigland case 0: 117b3b94faaSDavid Teigland gfs2_unfreeze_fs(sdp); 118b3b94faaSDavid Teigland break; 119b3b94faaSDavid Teigland case 1: 120b3b94faaSDavid Teigland error = gfs2_freeze_fs(sdp); 121b3b94faaSDavid Teigland break; 122b3b94faaSDavid Teigland default: 123b3b94faaSDavid Teigland ret = -EINVAL; 124b3b94faaSDavid Teigland } 125b3b94faaSDavid Teigland 126b3b94faaSDavid Teigland if (error) 127b3b94faaSDavid Teigland fs_warn(sdp, "freeze %d error %d", n, error); 128b3b94faaSDavid Teigland 129b3b94faaSDavid Teigland return ret; 130b3b94faaSDavid Teigland } 131b3b94faaSDavid Teigland 132b3b94faaSDavid Teigland static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) 133b3b94faaSDavid Teigland { 134b3b94faaSDavid Teigland unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); 1353204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", b); 136b3b94faaSDavid Teigland } 137b3b94faaSDavid Teigland 138b3b94faaSDavid Teigland static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 139b3b94faaSDavid Teigland { 140b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 141b3b94faaSDavid Teigland return -EACCES; 142b3b94faaSDavid Teigland 143b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 144b3b94faaSDavid Teigland return -EINVAL; 145b3b94faaSDavid Teigland 146b3b94faaSDavid Teigland gfs2_lm_withdraw(sdp, 147b3b94faaSDavid Teigland "GFS2: fsid=%s: withdrawing from cluster at user's request\n", 148b3b94faaSDavid Teigland sdp->sd_fsname); 149b3b94faaSDavid Teigland return len; 150b3b94faaSDavid Teigland } 151b3b94faaSDavid Teigland 152b3b94faaSDavid Teigland static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, 153b3b94faaSDavid Teigland size_t len) 154b3b94faaSDavid Teigland { 155b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 156b3b94faaSDavid Teigland return -EACCES; 157b3b94faaSDavid Teigland 158b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 159b3b94faaSDavid Teigland return -EINVAL; 160b3b94faaSDavid Teigland 161b3b94faaSDavid Teigland gfs2_statfs_sync(sdp); 162b3b94faaSDavid Teigland return len; 163b3b94faaSDavid Teigland } 164b3b94faaSDavid Teigland 165b3b94faaSDavid Teigland static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, 166b3b94faaSDavid Teigland size_t len) 167b3b94faaSDavid Teigland { 168b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 169b3b94faaSDavid Teigland return -EACCES; 170b3b94faaSDavid Teigland 171b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 172b3b94faaSDavid Teigland return -EINVAL; 173b3b94faaSDavid Teigland 174b3b94faaSDavid Teigland gfs2_quota_sync(sdp); 175b3b94faaSDavid Teigland return len; 176b3b94faaSDavid Teigland } 177b3b94faaSDavid Teigland 178b3b94faaSDavid Teigland static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, 179b3b94faaSDavid Teigland size_t len) 180b3b94faaSDavid Teigland { 181cd915493SSteven Whitehouse u32 id; 182b3b94faaSDavid Teigland 183b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 184b3b94faaSDavid Teigland return -EACCES; 185b3b94faaSDavid Teigland 186b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 187b3b94faaSDavid Teigland 188b3b94faaSDavid Teigland gfs2_quota_refresh(sdp, 1, id); 189b3b94faaSDavid Teigland return len; 190b3b94faaSDavid Teigland } 191b3b94faaSDavid Teigland 192b3b94faaSDavid Teigland static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, 193b3b94faaSDavid Teigland size_t len) 194b3b94faaSDavid Teigland { 195cd915493SSteven Whitehouse u32 id; 196b3b94faaSDavid Teigland 197b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 198b3b94faaSDavid Teigland return -EACCES; 199b3b94faaSDavid Teigland 200b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 201b3b94faaSDavid Teigland 202b3b94faaSDavid Teigland gfs2_quota_refresh(sdp, 0, id); 203b3b94faaSDavid Teigland return len; 204b3b94faaSDavid Teigland } 205b3b94faaSDavid Teigland 20664d576baSSteven Whitehouse static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 20764d576baSSteven Whitehouse { 20864d576baSSteven Whitehouse struct gfs2_glock *gl; 20964d576baSSteven Whitehouse const struct gfs2_glock_operations *glops; 21064d576baSSteven Whitehouse unsigned int glmode; 21164d576baSSteven Whitehouse unsigned int gltype; 21264d576baSSteven Whitehouse unsigned long long glnum; 21364d576baSSteven Whitehouse char mode[16]; 21464d576baSSteven Whitehouse int rv; 21564d576baSSteven Whitehouse 21664d576baSSteven Whitehouse if (!capable(CAP_SYS_ADMIN)) 21764d576baSSteven Whitehouse return -EACCES; 21864d576baSSteven Whitehouse 21964d576baSSteven Whitehouse rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, 22064d576baSSteven Whitehouse mode); 22164d576baSSteven Whitehouse if (rv != 3) 22264d576baSSteven Whitehouse return -EINVAL; 22364d576baSSteven Whitehouse 22464d576baSSteven Whitehouse if (strcmp(mode, "EX") == 0) 22564d576baSSteven Whitehouse glmode = LM_ST_UNLOCKED; 22664d576baSSteven Whitehouse else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) 22764d576baSSteven Whitehouse glmode = LM_ST_DEFERRED; 22864d576baSSteven Whitehouse else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) 22964d576baSSteven Whitehouse glmode = LM_ST_SHARED; 23064d576baSSteven Whitehouse else 23164d576baSSteven Whitehouse return -EINVAL; 23264d576baSSteven Whitehouse 23364d576baSSteven Whitehouse if (gltype > LM_TYPE_JOURNAL) 23464d576baSSteven Whitehouse return -EINVAL; 23564d576baSSteven Whitehouse glops = gfs2_glops_list[gltype]; 23664d576baSSteven Whitehouse if (glops == NULL) 23764d576baSSteven Whitehouse return -EINVAL; 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 lkid_show(struct gfs2_sbd *sdp, char *buf) 324f057f6cdSSteven Whitehouse { 325f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 326f057f6cdSSteven Whitehouse return sprintf(buf, "%u\n", ls->ls_id); 327f057f6cdSSteven Whitehouse } 328f057f6cdSSteven Whitehouse 329f057f6cdSSteven Whitehouse static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) 330f057f6cdSSteven Whitehouse { 331f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 332f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first); 333f057f6cdSSteven Whitehouse } 334f057f6cdSSteven Whitehouse 335f057f6cdSSteven Whitehouse static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) 336f057f6cdSSteven Whitehouse { 337f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 338f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first_done); 339f057f6cdSSteven Whitehouse } 340f057f6cdSSteven Whitehouse 341fe64d517SSteven Whitehouse static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 342f057f6cdSSteven Whitehouse { 343fe64d517SSteven Whitehouse unsigned jid; 344f057f6cdSSteven Whitehouse struct gfs2_jdesc *jd; 345fe64d517SSteven Whitehouse int rv; 346f057f6cdSSteven Whitehouse 347fe64d517SSteven Whitehouse rv = sscanf(buf, "%u", &jid); 348fe64d517SSteven Whitehouse if (rv != 1) 349fe64d517SSteven Whitehouse return -EINVAL; 350fe64d517SSteven Whitehouse 351fe64d517SSteven Whitehouse rv = -ESHUTDOWN; 352f057f6cdSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 353fe64d517SSteven Whitehouse if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) 354fe64d517SSteven Whitehouse goto out; 355fe64d517SSteven Whitehouse rv = -EBUSY; 356fe64d517SSteven Whitehouse if (sdp->sd_jdesc->jd_jid == jid) 357fe64d517SSteven Whitehouse goto out; 358fe64d517SSteven Whitehouse rv = -ENOENT; 359f057f6cdSSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 360f057f6cdSSteven Whitehouse if (jd->jd_jid != jid) 361f057f6cdSSteven Whitehouse continue; 362fe64d517SSteven Whitehouse rv = slow_work_enqueue(&jd->jd_work); 363f057f6cdSSteven Whitehouse break; 364f057f6cdSSteven Whitehouse } 365fe64d517SSteven Whitehouse out: 366f057f6cdSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 367fe64d517SSteven Whitehouse return rv ? rv : len; 368f057f6cdSSteven Whitehouse } 369f057f6cdSSteven Whitehouse 370f057f6cdSSteven Whitehouse static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) 371f057f6cdSSteven Whitehouse { 372f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 373f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_done); 374f057f6cdSSteven Whitehouse } 375f057f6cdSSteven Whitehouse 376f057f6cdSSteven Whitehouse static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) 377f057f6cdSSteven Whitehouse { 378f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 379f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_status); 380f057f6cdSSteven Whitehouse } 381f057f6cdSSteven Whitehouse 382e1b28aabSSteven Whitehouse static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) 383e1b28aabSSteven Whitehouse { 384e1b28aabSSteven Whitehouse return sprintf(buf, "%u\n", sdp->sd_lockstruct.ls_jid); 385e1b28aabSSteven Whitehouse } 386e1b28aabSSteven Whitehouse 387f057f6cdSSteven Whitehouse #define GDLM_ATTR(_name,_mode,_show,_store) \ 38848c2b613SSteven Whitehouse static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) 389f057f6cdSSteven Whitehouse 390f057f6cdSSteven Whitehouse GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); 391f057f6cdSSteven Whitehouse GDLM_ATTR(block, 0644, block_show, block_store); 392f057f6cdSSteven Whitehouse GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 393f057f6cdSSteven Whitehouse GDLM_ATTR(id, 0444, lkid_show, NULL); 394e1b28aabSSteven Whitehouse GDLM_ATTR(jid, 0444, jid_show, NULL); 395f057f6cdSSteven Whitehouse GDLM_ATTR(first, 0444, lkfirst_show, NULL); 396f057f6cdSSteven Whitehouse GDLM_ATTR(first_done, 0444, first_done_show, NULL); 397d7e623daSSteven Whitehouse GDLM_ATTR(recover, 0600, NULL, recover_store); 398f057f6cdSSteven Whitehouse GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); 399f057f6cdSSteven Whitehouse GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); 400f057f6cdSSteven Whitehouse 401f057f6cdSSteven Whitehouse static struct attribute *lock_module_attrs[] = { 402f057f6cdSSteven Whitehouse &gdlm_attr_proto_name.attr, 403f057f6cdSSteven Whitehouse &gdlm_attr_block.attr, 404f057f6cdSSteven Whitehouse &gdlm_attr_withdraw.attr, 405f057f6cdSSteven Whitehouse &gdlm_attr_id.attr, 406e1b28aabSSteven Whitehouse &gdlm_attr_jid.attr, 407f057f6cdSSteven Whitehouse &gdlm_attr_first.attr, 408f057f6cdSSteven Whitehouse &gdlm_attr_first_done.attr, 409f057f6cdSSteven Whitehouse &gdlm_attr_recover.attr, 410f057f6cdSSteven Whitehouse &gdlm_attr_recover_done.attr, 411f057f6cdSSteven Whitehouse &gdlm_attr_recover_status.attr, 412ea67eedbSSteven Whitehouse NULL, 413b3b94faaSDavid Teigland }; 414b3b94faaSDavid Teigland 415b3b94faaSDavid Teigland /* 416b3b94faaSDavid Teigland * get and set struct gfs2_tune fields 417b3b94faaSDavid Teigland */ 418b3b94faaSDavid Teigland 419b3b94faaSDavid Teigland static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) 420b3b94faaSDavid Teigland { 4213204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u %u\n", 4223204a6c0SDavid Teigland sdp->sd_tune.gt_quota_scale_num, 423b3b94faaSDavid Teigland sdp->sd_tune.gt_quota_scale_den); 424b3b94faaSDavid Teigland } 425b3b94faaSDavid Teigland 426b3b94faaSDavid Teigland static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, 427b3b94faaSDavid Teigland size_t len) 428b3b94faaSDavid Teigland { 429b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 430b3b94faaSDavid Teigland unsigned int x, y; 431b3b94faaSDavid Teigland 432b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 433b3b94faaSDavid Teigland return -EACCES; 434b3b94faaSDavid Teigland 435b3b94faaSDavid Teigland if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) 436b3b94faaSDavid Teigland return -EINVAL; 437b3b94faaSDavid Teigland 438b3b94faaSDavid Teigland spin_lock(>->gt_spin); 439b3b94faaSDavid Teigland gt->gt_quota_scale_num = x; 440b3b94faaSDavid Teigland gt->gt_quota_scale_den = y; 441b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 442b3b94faaSDavid Teigland return len; 443b3b94faaSDavid Teigland } 444b3b94faaSDavid Teigland 445b3b94faaSDavid Teigland static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, 446b3b94faaSDavid Teigland int check_zero, const char *buf, size_t len) 447b3b94faaSDavid Teigland { 448b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 449b3b94faaSDavid Teigland unsigned int x; 450b3b94faaSDavid Teigland 451b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 452b3b94faaSDavid Teigland return -EACCES; 453b3b94faaSDavid Teigland 454b3b94faaSDavid Teigland x = simple_strtoul(buf, NULL, 0); 455b3b94faaSDavid Teigland 456b3b94faaSDavid Teigland if (check_zero && !x) 457b3b94faaSDavid Teigland return -EINVAL; 458b3b94faaSDavid Teigland 459b3b94faaSDavid Teigland spin_lock(>->gt_spin); 460b3b94faaSDavid Teigland *field = x; 461b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 462b3b94faaSDavid Teigland return len; 463b3b94faaSDavid Teigland } 464b3b94faaSDavid Teigland 465b3b94faaSDavid Teigland #define TUNE_ATTR_3(name, show, store) \ 46648c2b613SSteven Whitehouse static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) 467b3b94faaSDavid Teigland 468b3b94faaSDavid Teigland #define TUNE_ATTR_2(name, store) \ 469b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 470b3b94faaSDavid Teigland { \ 4713204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ 472b3b94faaSDavid Teigland } \ 473b3b94faaSDavid Teigland TUNE_ATTR_3(name, name##_show, store) 474b3b94faaSDavid Teigland 475b3b94faaSDavid Teigland #define TUNE_ATTR(name, check_zero) \ 476b3b94faaSDavid Teigland static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ 477b3b94faaSDavid Teigland { \ 478b3b94faaSDavid Teigland return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ 479b3b94faaSDavid Teigland } \ 480b3b94faaSDavid Teigland TUNE_ATTR_2(name, name##_store) 481b3b94faaSDavid Teigland 482b3b94faaSDavid Teigland TUNE_ATTR(incore_log_blocks, 0); 483b3b94faaSDavid Teigland TUNE_ATTR(log_flush_secs, 0); 484b3b94faaSDavid Teigland TUNE_ATTR(quota_warn_period, 0); 485b3b94faaSDavid Teigland TUNE_ATTR(quota_quantum, 0); 486b3b94faaSDavid Teigland TUNE_ATTR(max_readahead, 0); 487b3b94faaSDavid Teigland TUNE_ATTR(complain_secs, 0); 488b3b94faaSDavid Teigland TUNE_ATTR(statfs_slow, 0); 489b3b94faaSDavid Teigland TUNE_ATTR(new_files_jdata, 0); 490b3b94faaSDavid Teigland TUNE_ATTR(quota_simul_sync, 1); 491b3b94faaSDavid Teigland TUNE_ATTR(stall_secs, 1); 492b3b94faaSDavid Teigland TUNE_ATTR(statfs_quantum, 1); 493b3b94faaSDavid Teigland TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); 494b3b94faaSDavid Teigland 495b3b94faaSDavid Teigland static struct attribute *tune_attrs[] = { 496b3b94faaSDavid Teigland &tune_attr_incore_log_blocks.attr, 497b3b94faaSDavid Teigland &tune_attr_log_flush_secs.attr, 498b3b94faaSDavid Teigland &tune_attr_quota_warn_period.attr, 499b3b94faaSDavid Teigland &tune_attr_quota_quantum.attr, 500b3b94faaSDavid Teigland &tune_attr_max_readahead.attr, 501b3b94faaSDavid Teigland &tune_attr_complain_secs.attr, 502b3b94faaSDavid Teigland &tune_attr_statfs_slow.attr, 503b3b94faaSDavid Teigland &tune_attr_quota_simul_sync.attr, 504b3b94faaSDavid Teigland &tune_attr_stall_secs.attr, 505b3b94faaSDavid Teigland &tune_attr_statfs_quantum.attr, 506b3b94faaSDavid Teigland &tune_attr_quota_scale.attr, 507b3b94faaSDavid Teigland &tune_attr_new_files_jdata.attr, 508ea67eedbSSteven Whitehouse NULL, 509b3b94faaSDavid Teigland }; 510b3b94faaSDavid Teigland 511b3b94faaSDavid Teigland static struct attribute_group tune_group = { 512b3b94faaSDavid Teigland .name = "tune", 513ea67eedbSSteven Whitehouse .attrs = tune_attrs, 514b3b94faaSDavid Teigland }; 515b3b94faaSDavid Teigland 516f057f6cdSSteven Whitehouse static struct attribute_group lock_module_group = { 517f057f6cdSSteven Whitehouse .name = "lock_module", 518f057f6cdSSteven Whitehouse .attrs = lock_module_attrs, 519f057f6cdSSteven Whitehouse }; 520f057f6cdSSteven Whitehouse 521b3b94faaSDavid Teigland int gfs2_sys_fs_add(struct gfs2_sbd *sdp) 522b3b94faaSDavid Teigland { 523440d6da2SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 524b3b94faaSDavid Teigland int error; 525440d6da2SSteven Whitehouse char ro[20]; 526440d6da2SSteven Whitehouse char spectator[20]; 527440d6da2SSteven Whitehouse char *envp[] = { ro, spectator, NULL }; 528440d6da2SSteven Whitehouse 529440d6da2SSteven Whitehouse sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); 530440d6da2SSteven Whitehouse sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); 531b3b94faaSDavid Teigland 5329bec101aSGreg Kroah-Hartman sdp->sd_kobj.kset = gfs2_kset; 533901195edSGreg Kroah-Hartman error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, 534901195edSGreg Kroah-Hartman "%s", sdp->sd_table_name); 535b3b94faaSDavid Teigland if (error) 536b3b94faaSDavid Teigland goto fail; 537b3b94faaSDavid Teigland 538b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &tune_group); 539b3b94faaSDavid Teigland if (error) 540f6eb5349SSteven Whitehouse goto fail_reg; 541b3b94faaSDavid Teigland 542f057f6cdSSteven Whitehouse error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); 543f057f6cdSSteven Whitehouse if (error) 544f057f6cdSSteven Whitehouse goto fail_tune; 545f057f6cdSSteven Whitehouse 546*31e54b01SSteven Whitehouse error = sysfs_create_link(&sdp->sd_kobj, 547*31e54b01SSteven Whitehouse &disk_to_dev(sb->s_bdev->bd_disk)->kobj, 548*31e54b01SSteven Whitehouse "device"); 549*31e54b01SSteven Whitehouse if (error) 550*31e54b01SSteven Whitehouse goto fail_lock_module; 551*31e54b01SSteven Whitehouse 552440d6da2SSteven Whitehouse kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); 553b3b94faaSDavid Teigland return 0; 554b3b94faaSDavid Teigland 555*31e54b01SSteven Whitehouse fail_lock_module: 556*31e54b01SSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 557f057f6cdSSteven Whitehouse fail_tune: 558f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &tune_group); 559b3b94faaSDavid Teigland fail_reg: 560197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 561b3b94faaSDavid Teigland fail: 56265952fb4SDavid Teigland fs_err(sdp, "error %d adding sysfs files", error); 563b3b94faaSDavid Teigland return error; 564b3b94faaSDavid Teigland } 565b3b94faaSDavid Teigland 566b3b94faaSDavid Teigland void gfs2_sys_fs_del(struct gfs2_sbd *sdp) 567b3b94faaSDavid Teigland { 568*31e54b01SSteven Whitehouse sysfs_remove_link(&sdp->sd_kobj, "device"); 569b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &tune_group); 570f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 571197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 572b3b94faaSDavid Teigland } 573b3b94faaSDavid Teigland 574fdd1062eSSteven Whitehouse static int gfs2_uevent(struct kset *kset, struct kobject *kobj, 575fdd1062eSSteven Whitehouse struct kobj_uevent_env *env) 576fdd1062eSSteven Whitehouse { 577fdd1062eSSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 57802e3cc70SSteven Whitehouse const u8 *uuid = sdp->sd_sb.sb_uuid; 57902e3cc70SSteven Whitehouse 580fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); 581fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); 582440d6da2SSteven Whitehouse if (!sdp->sd_args.ar_spectator) 583440d6da2SSteven Whitehouse add_uevent_var(env, "JOURNALID=%u", sdp->sd_lockstruct.ls_jid); 58402e3cc70SSteven Whitehouse if (gfs2_uuid_valid(uuid)) { 58502e3cc70SSteven Whitehouse add_uevent_var(env, "UUID=%02X%02X%02X%02X-%02X%02X-%02X%02X-" 58602e3cc70SSteven Whitehouse "%02X%02X-%02X%02X%02X%02X%02X%02X", 58702e3cc70SSteven Whitehouse uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], 58802e3cc70SSteven Whitehouse uuid[5], uuid[6], uuid[7], uuid[8], uuid[9], 58902e3cc70SSteven Whitehouse uuid[10], uuid[11], uuid[12], uuid[13], 59002e3cc70SSteven Whitehouse uuid[14], uuid[15]); 59102e3cc70SSteven Whitehouse } 592fdd1062eSSteven Whitehouse return 0; 593fdd1062eSSteven Whitehouse } 594fdd1062eSSteven Whitehouse 595fdd1062eSSteven Whitehouse static struct kset_uevent_ops gfs2_uevent_ops = { 596fdd1062eSSteven Whitehouse .uevent = gfs2_uevent, 597fdd1062eSSteven Whitehouse }; 598fdd1062eSSteven Whitehouse 599b3b94faaSDavid Teigland int gfs2_sys_init(void) 600b3b94faaSDavid Teigland { 601fdd1062eSSteven Whitehouse gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); 6029bec101aSGreg Kroah-Hartman if (!gfs2_kset) 6039bec101aSGreg Kroah-Hartman return -ENOMEM; 6049bec101aSGreg Kroah-Hartman return 0; 605b3b94faaSDavid Teigland } 606b3b94faaSDavid Teigland 607b3b94faaSDavid Teigland void gfs2_sys_uninit(void) 608b3b94faaSDavid Teigland { 6099bec101aSGreg Kroah-Hartman kset_unregister(gfs2_kset); 610b3b94faaSDavid Teigland } 611b3b94faaSDavid Teigland 612