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 { 8432e471efSSteven Whitehouse struct super_block *s = sdp->sd_vfs; 8532e471efSSteven Whitehouse const u8 *uuid = s->s_uuid; 8602e3cc70SSteven Whitehouse buf[0] = '\0'; 8702e3cc70SSteven Whitehouse if (!gfs2_uuid_valid(uuid)) 8802e3cc70SSteven Whitehouse return 0; 89f0b34ae6SJoe Perches return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid); 9002e3cc70SSteven Whitehouse } 9102e3cc70SSteven Whitehouse 92b3b94faaSDavid Teigland static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) 93b3b94faaSDavid Teigland { 94b3b94faaSDavid Teigland unsigned int count; 95b3b94faaSDavid Teigland 96f55ab26aSSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 97b3b94faaSDavid Teigland count = sdp->sd_freeze_count; 98f55ab26aSSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 99b3b94faaSDavid Teigland 1003204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", count); 101b3b94faaSDavid Teigland } 102b3b94faaSDavid Teigland 103b3b94faaSDavid Teigland static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 104b3b94faaSDavid Teigland { 105b3b94faaSDavid Teigland ssize_t ret = len; 106b3b94faaSDavid Teigland int error = 0; 107b3b94faaSDavid Teigland int n = simple_strtol(buf, NULL, 0); 108b3b94faaSDavid Teigland 109b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 110b3b94faaSDavid Teigland return -EACCES; 111b3b94faaSDavid Teigland 112b3b94faaSDavid Teigland switch (n) { 113b3b94faaSDavid Teigland case 0: 114b3b94faaSDavid Teigland gfs2_unfreeze_fs(sdp); 115b3b94faaSDavid Teigland break; 116b3b94faaSDavid Teigland case 1: 117b3b94faaSDavid Teigland error = gfs2_freeze_fs(sdp); 118b3b94faaSDavid Teigland break; 119b3b94faaSDavid Teigland default: 120b3b94faaSDavid Teigland ret = -EINVAL; 121b3b94faaSDavid Teigland } 122b3b94faaSDavid Teigland 123b3b94faaSDavid Teigland if (error) 124b3b94faaSDavid Teigland fs_warn(sdp, "freeze %d error %d", n, error); 125b3b94faaSDavid Teigland 126b3b94faaSDavid Teigland return ret; 127b3b94faaSDavid Teigland } 128b3b94faaSDavid Teigland 129b3b94faaSDavid Teigland static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) 130b3b94faaSDavid Teigland { 131b3b94faaSDavid Teigland unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); 1323204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", b); 133b3b94faaSDavid Teigland } 134b3b94faaSDavid Teigland 135b3b94faaSDavid Teigland static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 136b3b94faaSDavid Teigland { 137b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 138b3b94faaSDavid Teigland return -EACCES; 139b3b94faaSDavid Teigland 140b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 141b3b94faaSDavid Teigland return -EINVAL; 142b3b94faaSDavid Teigland 143b3b94faaSDavid Teigland gfs2_lm_withdraw(sdp, 144b3b94faaSDavid Teigland "GFS2: fsid=%s: withdrawing from cluster at user's request\n", 145b3b94faaSDavid Teigland sdp->sd_fsname); 146b3b94faaSDavid Teigland return len; 147b3b94faaSDavid Teigland } 148b3b94faaSDavid Teigland 149b3b94faaSDavid Teigland static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, 150b3b94faaSDavid Teigland size_t len) 151b3b94faaSDavid Teigland { 152b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 153b3b94faaSDavid Teigland return -EACCES; 154b3b94faaSDavid Teigland 155b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 156b3b94faaSDavid Teigland return -EINVAL; 157b3b94faaSDavid Teigland 1588c42d637SSteven Whitehouse gfs2_statfs_sync(sdp->sd_vfs, 0); 159b3b94faaSDavid Teigland return len; 160b3b94faaSDavid Teigland } 161b3b94faaSDavid Teigland 162b3b94faaSDavid Teigland static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, 163b3b94faaSDavid Teigland size_t len) 164b3b94faaSDavid Teigland { 165b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 166b3b94faaSDavid Teigland return -EACCES; 167b3b94faaSDavid Teigland 168b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 169b3b94faaSDavid Teigland return -EINVAL; 170b3b94faaSDavid Teigland 171ceed1723SJan Kara gfs2_quota_sync(sdp->sd_vfs, 0); 172b3b94faaSDavid Teigland return len; 173b3b94faaSDavid Teigland } 174b3b94faaSDavid Teigland 175b3b94faaSDavid Teigland static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, 176b3b94faaSDavid Teigland size_t len) 177b3b94faaSDavid Teigland { 178*ed87dabcSEric W. Biederman struct kqid qid; 179ea762338SSteven Whitehouse int error; 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 187*ed87dabcSEric W. Biederman qid = make_kqid(current_user_ns(), USRQUOTA, id); 188*ed87dabcSEric W. Biederman if (!qid_valid(qid)) 189*ed87dabcSEric W. Biederman return -EINVAL; 190*ed87dabcSEric W. Biederman 191*ed87dabcSEric W. Biederman error = gfs2_quota_refresh(sdp, qid); 192ea762338SSteven Whitehouse return error ? error : len; 193b3b94faaSDavid Teigland } 194b3b94faaSDavid Teigland 195b3b94faaSDavid Teigland static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, 196b3b94faaSDavid Teigland size_t len) 197b3b94faaSDavid Teigland { 198*ed87dabcSEric W. Biederman struct kqid qid; 199ea762338SSteven Whitehouse int error; 200cd915493SSteven Whitehouse u32 id; 201b3b94faaSDavid Teigland 202b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 203b3b94faaSDavid Teigland return -EACCES; 204b3b94faaSDavid Teigland 205b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 206b3b94faaSDavid Teigland 207*ed87dabcSEric W. Biederman qid = make_kqid(current_user_ns(), GRPQUOTA, id); 208*ed87dabcSEric W. Biederman if (!qid_valid(qid)) 209*ed87dabcSEric W. Biederman return -EINVAL; 210*ed87dabcSEric W. Biederman 211*ed87dabcSEric W. Biederman error = gfs2_quota_refresh(sdp, qid); 212ea762338SSteven Whitehouse return error ? error : len; 213b3b94faaSDavid Teigland } 214b3b94faaSDavid Teigland 21564d576baSSteven Whitehouse static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 21664d576baSSteven Whitehouse { 21764d576baSSteven Whitehouse struct gfs2_glock *gl; 21864d576baSSteven Whitehouse const struct gfs2_glock_operations *glops; 21964d576baSSteven Whitehouse unsigned int glmode; 22064d576baSSteven Whitehouse unsigned int gltype; 22164d576baSSteven Whitehouse unsigned long long glnum; 22264d576baSSteven Whitehouse char mode[16]; 22364d576baSSteven Whitehouse int rv; 22464d576baSSteven Whitehouse 22564d576baSSteven Whitehouse if (!capable(CAP_SYS_ADMIN)) 22664d576baSSteven Whitehouse return -EACCES; 22764d576baSSteven Whitehouse 22864d576baSSteven Whitehouse rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, 22964d576baSSteven Whitehouse mode); 23064d576baSSteven Whitehouse if (rv != 3) 23164d576baSSteven Whitehouse return -EINVAL; 23264d576baSSteven Whitehouse 23364d576baSSteven Whitehouse if (strcmp(mode, "EX") == 0) 23464d576baSSteven Whitehouse glmode = LM_ST_UNLOCKED; 23564d576baSSteven Whitehouse else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) 23664d576baSSteven Whitehouse glmode = LM_ST_DEFERRED; 23764d576baSSteven Whitehouse else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) 23864d576baSSteven Whitehouse glmode = LM_ST_SHARED; 23964d576baSSteven Whitehouse else 24064d576baSSteven Whitehouse return -EINVAL; 24164d576baSSteven Whitehouse 24264d576baSSteven Whitehouse if (gltype > LM_TYPE_JOURNAL) 24364d576baSSteven Whitehouse return -EINVAL; 24413466985SSteven Whitehouse if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK) 24513466985SSteven Whitehouse glops = &gfs2_trans_glops; 24613466985SSteven Whitehouse else 24764d576baSSteven Whitehouse glops = gfs2_glops_list[gltype]; 24864d576baSSteven Whitehouse if (glops == NULL) 24964d576baSSteven Whitehouse return -EINVAL; 2506a99be5dSSteven Whitehouse if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) 251913a71d2SSteven Whitehouse fs_info(sdp, "demote interface used\n"); 25264d576baSSteven Whitehouse rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); 25364d576baSSteven Whitehouse if (rv) 25464d576baSSteven Whitehouse return rv; 25564d576baSSteven Whitehouse gfs2_glock_cb(gl, glmode); 25664d576baSSteven Whitehouse gfs2_glock_put(gl); 25764d576baSSteven Whitehouse return len; 25864d576baSSteven Whitehouse } 25964d576baSSteven Whitehouse 260b3b94faaSDavid Teigland 261b3b94faaSDavid Teigland #define GFS2_ATTR(name, mode, show, store) \ 262b3b94faaSDavid Teigland static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) 263b3b94faaSDavid Teigland 264b3b94faaSDavid Teigland GFS2_ATTR(id, 0444, id_show, NULL); 265b3b94faaSDavid Teigland GFS2_ATTR(fsname, 0444, fsname_show, NULL); 26602e3cc70SSteven Whitehouse GFS2_ATTR(uuid, 0444, uuid_show, NULL); 267b3b94faaSDavid Teigland GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); 268b3b94faaSDavid Teigland GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 269b3b94faaSDavid Teigland GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); 270b3b94faaSDavid Teigland GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); 271b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); 272b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); 27364d576baSSteven Whitehouse GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); 274b3b94faaSDavid Teigland 275b3b94faaSDavid Teigland static struct attribute *gfs2_attrs[] = { 276b3b94faaSDavid Teigland &gfs2_attr_id.attr, 277b3b94faaSDavid Teigland &gfs2_attr_fsname.attr, 27802e3cc70SSteven Whitehouse &gfs2_attr_uuid.attr, 279b3b94faaSDavid Teigland &gfs2_attr_freeze.attr, 280b3b94faaSDavid Teigland &gfs2_attr_withdraw.attr, 281b3b94faaSDavid Teigland &gfs2_attr_statfs_sync.attr, 282b3b94faaSDavid Teigland &gfs2_attr_quota_sync.attr, 283b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_user.attr, 284b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_group.attr, 28564d576baSSteven Whitehouse &gfs2_attr_demote_rq.attr, 286b3b94faaSDavid Teigland NULL, 287b3b94faaSDavid Teigland }; 288b3b94faaSDavid Teigland 2890d515210SBob Peterson static void gfs2_sbd_release(struct kobject *kobj) 2900d515210SBob Peterson { 2910d515210SBob Peterson struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 2920d515210SBob Peterson 2930d515210SBob Peterson kfree(sdp); 2940d515210SBob Peterson } 2950d515210SBob Peterson 296b3b94faaSDavid Teigland static struct kobj_type gfs2_ktype = { 2970d515210SBob Peterson .release = gfs2_sbd_release, 298b3b94faaSDavid Teigland .default_attrs = gfs2_attrs, 299b3b94faaSDavid Teigland .sysfs_ops = &gfs2_attr_ops, 300b3b94faaSDavid Teigland }; 301b3b94faaSDavid Teigland 302f057f6cdSSteven Whitehouse 303f057f6cdSSteven Whitehouse /* 304f057f6cdSSteven Whitehouse * lock_module. Originally from lock_dlm 305f057f6cdSSteven Whitehouse */ 306f057f6cdSSteven Whitehouse 307f057f6cdSSteven Whitehouse static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) 308f057f6cdSSteven Whitehouse { 309f057f6cdSSteven Whitehouse const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; 310f057f6cdSSteven Whitehouse return sprintf(buf, "%s\n", ops->lm_proto_name); 311f057f6cdSSteven Whitehouse } 312f057f6cdSSteven Whitehouse 313f057f6cdSSteven Whitehouse static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) 314f057f6cdSSteven Whitehouse { 315f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 316f057f6cdSSteven Whitehouse ssize_t ret; 317f057f6cdSSteven Whitehouse int val = 0; 318f057f6cdSSteven Whitehouse 319e0c2a9aaSDavid Teigland if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags)) 320f057f6cdSSteven Whitehouse val = 1; 321f057f6cdSSteven Whitehouse ret = sprintf(buf, "%d\n", val); 322f057f6cdSSteven Whitehouse return ret; 323f057f6cdSSteven Whitehouse } 324f057f6cdSSteven Whitehouse 325f057f6cdSSteven Whitehouse static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 326f057f6cdSSteven Whitehouse { 327f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 328f057f6cdSSteven Whitehouse ssize_t ret = len; 329f057f6cdSSteven Whitehouse int val; 330f057f6cdSSteven Whitehouse 331f057f6cdSSteven Whitehouse val = simple_strtol(buf, NULL, 0); 332f057f6cdSSteven Whitehouse 333f057f6cdSSteven Whitehouse if (val == 1) 334e0c2a9aaSDavid Teigland set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); 335f057f6cdSSteven Whitehouse else if (val == 0) { 336e0c2a9aaSDavid Teigland clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); 337f057f6cdSSteven Whitehouse smp_mb__after_clear_bit(); 338f057f6cdSSteven Whitehouse gfs2_glock_thaw(sdp); 339f057f6cdSSteven Whitehouse } else { 340f057f6cdSSteven Whitehouse ret = -EINVAL; 341f057f6cdSSteven Whitehouse } 342f057f6cdSSteven Whitehouse return ret; 343f057f6cdSSteven Whitehouse } 344f057f6cdSSteven Whitehouse 345f057f6cdSSteven Whitehouse static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) 346f057f6cdSSteven Whitehouse { 347f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 348f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_first); 349f057f6cdSSteven Whitehouse } 350f057f6cdSSteven Whitehouse 351ba6e9364SSteven Whitehouse static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 352ba6e9364SSteven Whitehouse { 353ba6e9364SSteven Whitehouse unsigned first; 354ba6e9364SSteven Whitehouse int rv; 355ba6e9364SSteven Whitehouse 356ba6e9364SSteven Whitehouse rv = sscanf(buf, "%u", &first); 357ba6e9364SSteven Whitehouse if (rv != 1 || first > 1) 358ba6e9364SSteven Whitehouse return -EINVAL; 3593942ae53SSteven Whitehouse rv = wait_for_completion_killable(&sdp->sd_locking_init); 3603942ae53SSteven Whitehouse if (rv) 3613942ae53SSteven Whitehouse return rv; 362ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 363ba6e9364SSteven Whitehouse rv = -EBUSY; 364ba6e9364SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 365ba6e9364SSteven Whitehouse goto out; 366ba6e9364SSteven Whitehouse rv = -EINVAL; 367ba6e9364SSteven Whitehouse if (sdp->sd_args.ar_spectator) 368ba6e9364SSteven Whitehouse goto out; 369ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 370ba6e9364SSteven Whitehouse goto out; 371ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_first = first; 372ba6e9364SSteven Whitehouse rv = 0; 373ba6e9364SSteven Whitehouse out: 374ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 375ba6e9364SSteven Whitehouse return rv ? rv : len; 376ba6e9364SSteven Whitehouse } 377ba6e9364SSteven Whitehouse 378f057f6cdSSteven Whitehouse static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) 379f057f6cdSSteven Whitehouse { 380f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 381e0c2a9aaSDavid Teigland return sprintf(buf, "%d\n", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags)); 382f057f6cdSSteven Whitehouse } 383f057f6cdSSteven Whitehouse 384e0c2a9aaSDavid Teigland int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid) 385f057f6cdSSteven Whitehouse { 386f057f6cdSSteven Whitehouse struct gfs2_jdesc *jd; 387fe64d517SSteven Whitehouse int rv; 388f057f6cdSSteven Whitehouse 389f057f6cdSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 390fe64d517SSteven Whitehouse rv = -EBUSY; 391fe64d517SSteven Whitehouse if (sdp->sd_jdesc->jd_jid == jid) 392fe64d517SSteven Whitehouse goto out; 393fe64d517SSteven Whitehouse rv = -ENOENT; 394f057f6cdSSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 395f057f6cdSSteven Whitehouse if (jd->jd_jid != jid) 396f057f6cdSSteven Whitehouse continue; 3976ecd7c2dSTejun Heo rv = gfs2_recover_journal(jd, false); 398f057f6cdSSteven Whitehouse break; 399f057f6cdSSteven Whitehouse } 400fe64d517SSteven Whitehouse out: 401f057f6cdSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 402e0c2a9aaSDavid Teigland return rv; 403e0c2a9aaSDavid Teigland } 404e0c2a9aaSDavid Teigland 405e0c2a9aaSDavid Teigland static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 406e0c2a9aaSDavid Teigland { 407e0c2a9aaSDavid Teigland unsigned jid; 408e0c2a9aaSDavid Teigland int rv; 409e0c2a9aaSDavid Teigland 410e0c2a9aaSDavid Teigland rv = sscanf(buf, "%u", &jid); 411e0c2a9aaSDavid Teigland if (rv != 1) 412e0c2a9aaSDavid Teigland return -EINVAL; 413e0c2a9aaSDavid Teigland 4141a058f52SDavid Teigland if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) { 4151a058f52SDavid Teigland rv = -ESHUTDOWN; 4161a058f52SDavid Teigland goto out; 4171a058f52SDavid Teigland } 418e0c2a9aaSDavid Teigland 4191a058f52SDavid Teigland rv = gfs2_recover_set(sdp, jid); 4201a058f52SDavid Teigland out: 421fe64d517SSteven Whitehouse return rv ? rv : len; 422f057f6cdSSteven Whitehouse } 423f057f6cdSSteven Whitehouse 424f057f6cdSSteven Whitehouse static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) 425f057f6cdSSteven Whitehouse { 426f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 427f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_done); 428f057f6cdSSteven Whitehouse } 429f057f6cdSSteven Whitehouse 430f057f6cdSSteven Whitehouse static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) 431f057f6cdSSteven Whitehouse { 432f057f6cdSSteven Whitehouse struct lm_lockstruct *ls = &sdp->sd_lockstruct; 433f057f6cdSSteven Whitehouse return sprintf(buf, "%d\n", ls->ls_recover_jid_status); 434f057f6cdSSteven Whitehouse } 435f057f6cdSSteven Whitehouse 436e1b28aabSSteven Whitehouse static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) 437e1b28aabSSteven Whitehouse { 438feb47ca9SSteven Whitehouse return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid); 439e1b28aabSSteven Whitehouse } 440e1b28aabSSteven Whitehouse 441ba6e9364SSteven Whitehouse static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 442ba6e9364SSteven Whitehouse { 443feb47ca9SSteven Whitehouse int jid; 444ba6e9364SSteven Whitehouse int rv; 445ba6e9364SSteven Whitehouse 446feb47ca9SSteven Whitehouse rv = sscanf(buf, "%d", &jid); 447ba6e9364SSteven Whitehouse if (rv != 1) 448ba6e9364SSteven Whitehouse return -EINVAL; 4493942ae53SSteven Whitehouse rv = wait_for_completion_killable(&sdp->sd_locking_init); 4503942ae53SSteven Whitehouse if (rv) 4513942ae53SSteven Whitehouse return rv; 452ba6e9364SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 453ba6e9364SSteven Whitehouse rv = -EINVAL; 454ba6e9364SSteven Whitehouse if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) 455ba6e9364SSteven Whitehouse goto out; 456ba6e9364SSteven Whitehouse rv = -EBUSY; 457feb47ca9SSteven Whitehouse if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0) 458ba6e9364SSteven Whitehouse goto out; 459feb47ca9SSteven Whitehouse rv = 0; 460feb47ca9SSteven Whitehouse if (sdp->sd_args.ar_spectator && jid > 0) 461feb47ca9SSteven Whitehouse rv = jid = -EINVAL; 462ba6e9364SSteven Whitehouse sdp->sd_lockstruct.ls_jid = jid; 463feb47ca9SSteven Whitehouse clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); 464ba6e9364SSteven Whitehouse smp_mb__after_clear_bit(); 465ba6e9364SSteven Whitehouse wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); 466ba6e9364SSteven Whitehouse out: 467ba6e9364SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 468ba6e9364SSteven Whitehouse return rv ? rv : len; 469ba6e9364SSteven Whitehouse } 470ba6e9364SSteven Whitehouse 471f057f6cdSSteven Whitehouse #define GDLM_ATTR(_name,_mode,_show,_store) \ 47248c2b613SSteven Whitehouse static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) 473f057f6cdSSteven Whitehouse 474f057f6cdSSteven Whitehouse GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); 475f057f6cdSSteven Whitehouse GDLM_ATTR(block, 0644, block_show, block_store); 476f057f6cdSSteven Whitehouse GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 477ba6e9364SSteven Whitehouse GDLM_ATTR(jid, 0644, jid_show, jid_store); 478ba6e9364SSteven Whitehouse GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store); 479f057f6cdSSteven Whitehouse GDLM_ATTR(first_done, 0444, first_done_show, NULL); 480d7e623daSSteven Whitehouse GDLM_ATTR(recover, 0600, NULL, recover_store); 481f057f6cdSSteven Whitehouse GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); 482f057f6cdSSteven Whitehouse GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); 483f057f6cdSSteven Whitehouse 484f057f6cdSSteven Whitehouse static struct attribute *lock_module_attrs[] = { 485f057f6cdSSteven Whitehouse &gdlm_attr_proto_name.attr, 486f057f6cdSSteven Whitehouse &gdlm_attr_block.attr, 487f057f6cdSSteven Whitehouse &gdlm_attr_withdraw.attr, 488e1b28aabSSteven Whitehouse &gdlm_attr_jid.attr, 489f057f6cdSSteven Whitehouse &gdlm_attr_first.attr, 490f057f6cdSSteven Whitehouse &gdlm_attr_first_done.attr, 491f057f6cdSSteven Whitehouse &gdlm_attr_recover.attr, 492f057f6cdSSteven Whitehouse &gdlm_attr_recover_done.attr, 493f057f6cdSSteven Whitehouse &gdlm_attr_recover_status.attr, 494ea67eedbSSteven Whitehouse NULL, 495b3b94faaSDavid Teigland }; 496b3b94faaSDavid Teigland 497b3b94faaSDavid Teigland /* 498b3b94faaSDavid Teigland * get and set struct gfs2_tune fields 499b3b94faaSDavid Teigland */ 500b3b94faaSDavid Teigland 501b3b94faaSDavid Teigland static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) 502b3b94faaSDavid Teigland { 5033204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u %u\n", 5043204a6c0SDavid Teigland sdp->sd_tune.gt_quota_scale_num, 505b3b94faaSDavid Teigland sdp->sd_tune.gt_quota_scale_den); 506b3b94faaSDavid Teigland } 507b3b94faaSDavid Teigland 508b3b94faaSDavid Teigland static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, 509b3b94faaSDavid Teigland size_t len) 510b3b94faaSDavid Teigland { 511b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 512b3b94faaSDavid Teigland unsigned int x, y; 513b3b94faaSDavid Teigland 514b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 515b3b94faaSDavid Teigland return -EACCES; 516b3b94faaSDavid Teigland 517b3b94faaSDavid Teigland if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) 518b3b94faaSDavid Teigland return -EINVAL; 519b3b94faaSDavid Teigland 520b3b94faaSDavid Teigland spin_lock(>->gt_spin); 521b3b94faaSDavid Teigland gt->gt_quota_scale_num = x; 522b3b94faaSDavid Teigland gt->gt_quota_scale_den = y; 523b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 524b3b94faaSDavid Teigland return len; 525b3b94faaSDavid Teigland } 526b3b94faaSDavid Teigland 527b3b94faaSDavid Teigland static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, 528b3b94faaSDavid Teigland int check_zero, const char *buf, size_t len) 529b3b94faaSDavid Teigland { 530b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 531b3b94faaSDavid Teigland unsigned int x; 532b3b94faaSDavid Teigland 533b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 534b3b94faaSDavid Teigland return -EACCES; 535b3b94faaSDavid Teigland 536b3b94faaSDavid Teigland x = simple_strtoul(buf, NULL, 0); 537b3b94faaSDavid Teigland 538b3b94faaSDavid Teigland if (check_zero && !x) 539b3b94faaSDavid Teigland return -EINVAL; 540b3b94faaSDavid Teigland 541b3b94faaSDavid Teigland spin_lock(>->gt_spin); 542b3b94faaSDavid Teigland *field = x; 543b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 544b3b94faaSDavid Teigland return len; 545b3b94faaSDavid Teigland } 546b3b94faaSDavid Teigland 547b3b94faaSDavid Teigland #define TUNE_ATTR_3(name, show, store) \ 54848c2b613SSteven Whitehouse static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) 549b3b94faaSDavid Teigland 550b3b94faaSDavid Teigland #define TUNE_ATTR_2(name, store) \ 551b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 552b3b94faaSDavid Teigland { \ 5533204a6c0SDavid Teigland return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ 554b3b94faaSDavid Teigland } \ 555b3b94faaSDavid Teigland TUNE_ATTR_3(name, name##_show, store) 556b3b94faaSDavid Teigland 557b3b94faaSDavid Teigland #define TUNE_ATTR(name, check_zero) \ 558b3b94faaSDavid Teigland static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ 559b3b94faaSDavid Teigland { \ 560b3b94faaSDavid Teigland return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ 561b3b94faaSDavid Teigland } \ 562b3b94faaSDavid Teigland TUNE_ATTR_2(name, name##_store) 563b3b94faaSDavid Teigland 564b3b94faaSDavid Teigland TUNE_ATTR(quota_warn_period, 0); 565b3b94faaSDavid Teigland TUNE_ATTR(quota_quantum, 0); 566b3b94faaSDavid Teigland TUNE_ATTR(max_readahead, 0); 567b3b94faaSDavid Teigland TUNE_ATTR(complain_secs, 0); 568b3b94faaSDavid Teigland TUNE_ATTR(statfs_slow, 0); 569b3b94faaSDavid Teigland TUNE_ATTR(new_files_jdata, 0); 570b3b94faaSDavid Teigland TUNE_ATTR(quota_simul_sync, 1); 571b3b94faaSDavid Teigland TUNE_ATTR(statfs_quantum, 1); 572b3b94faaSDavid Teigland TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); 573b3b94faaSDavid Teigland 574b3b94faaSDavid Teigland static struct attribute *tune_attrs[] = { 575b3b94faaSDavid Teigland &tune_attr_quota_warn_period.attr, 576b3b94faaSDavid Teigland &tune_attr_quota_quantum.attr, 577b3b94faaSDavid Teigland &tune_attr_max_readahead.attr, 578b3b94faaSDavid Teigland &tune_attr_complain_secs.attr, 579b3b94faaSDavid Teigland &tune_attr_statfs_slow.attr, 580b3b94faaSDavid Teigland &tune_attr_quota_simul_sync.attr, 581b3b94faaSDavid Teigland &tune_attr_statfs_quantum.attr, 582b3b94faaSDavid Teigland &tune_attr_quota_scale.attr, 583b3b94faaSDavid Teigland &tune_attr_new_files_jdata.attr, 584ea67eedbSSteven Whitehouse NULL, 585b3b94faaSDavid Teigland }; 586b3b94faaSDavid Teigland 587b3b94faaSDavid Teigland static struct attribute_group tune_group = { 588b3b94faaSDavid Teigland .name = "tune", 589ea67eedbSSteven Whitehouse .attrs = tune_attrs, 590b3b94faaSDavid Teigland }; 591b3b94faaSDavid Teigland 592f057f6cdSSteven Whitehouse static struct attribute_group lock_module_group = { 593f057f6cdSSteven Whitehouse .name = "lock_module", 594f057f6cdSSteven Whitehouse .attrs = lock_module_attrs, 595f057f6cdSSteven Whitehouse }; 596f057f6cdSSteven Whitehouse 597b3b94faaSDavid Teigland int gfs2_sys_fs_add(struct gfs2_sbd *sdp) 598b3b94faaSDavid Teigland { 599440d6da2SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 600b3b94faaSDavid Teigland int error; 601440d6da2SSteven Whitehouse char ro[20]; 602440d6da2SSteven Whitehouse char spectator[20]; 603440d6da2SSteven Whitehouse char *envp[] = { ro, spectator, NULL }; 6040d515210SBob Peterson int sysfs_frees_sdp = 0; 605440d6da2SSteven Whitehouse 606440d6da2SSteven Whitehouse sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); 607440d6da2SSteven Whitehouse sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); 608b3b94faaSDavid Teigland 6099bec101aSGreg Kroah-Hartman sdp->sd_kobj.kset = gfs2_kset; 610901195edSGreg Kroah-Hartman error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, 611901195edSGreg Kroah-Hartman "%s", sdp->sd_table_name); 612b3b94faaSDavid Teigland if (error) 6130d515210SBob Peterson goto fail_reg; 614b3b94faaSDavid Teigland 6150d515210SBob Peterson sysfs_frees_sdp = 1; /* Freeing sdp is now done by sysfs calling 6160d515210SBob Peterson function gfs2_sbd_release. */ 617b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &tune_group); 618b3b94faaSDavid Teigland if (error) 619f6eb5349SSteven Whitehouse goto fail_reg; 620b3b94faaSDavid Teigland 621f057f6cdSSteven Whitehouse error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); 622f057f6cdSSteven Whitehouse if (error) 623f057f6cdSSteven Whitehouse goto fail_tune; 624f057f6cdSSteven Whitehouse 62531e54b01SSteven Whitehouse error = sysfs_create_link(&sdp->sd_kobj, 62631e54b01SSteven Whitehouse &disk_to_dev(sb->s_bdev->bd_disk)->kobj, 62731e54b01SSteven Whitehouse "device"); 62831e54b01SSteven Whitehouse if (error) 62931e54b01SSteven Whitehouse goto fail_lock_module; 63031e54b01SSteven Whitehouse 631440d6da2SSteven Whitehouse kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); 632b3b94faaSDavid Teigland return 0; 633b3b94faaSDavid Teigland 63431e54b01SSteven Whitehouse fail_lock_module: 63531e54b01SSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 636f057f6cdSSteven Whitehouse fail_tune: 637f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &tune_group); 638b3b94faaSDavid Teigland fail_reg: 6390d515210SBob Peterson free_percpu(sdp->sd_lkstats); 64065952fb4SDavid Teigland fs_err(sdp, "error %d adding sysfs files", error); 6410d515210SBob Peterson if (sysfs_frees_sdp) 6420d515210SBob Peterson kobject_put(&sdp->sd_kobj); 6430d515210SBob Peterson else 6440d515210SBob Peterson kfree(sdp); 6450d515210SBob Peterson sb->s_fs_info = NULL; 646b3b94faaSDavid Teigland return error; 647b3b94faaSDavid Teigland } 648b3b94faaSDavid Teigland 649b3b94faaSDavid Teigland void gfs2_sys_fs_del(struct gfs2_sbd *sdp) 650b3b94faaSDavid Teigland { 65131e54b01SSteven Whitehouse sysfs_remove_link(&sdp->sd_kobj, "device"); 652b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &tune_group); 653f057f6cdSSteven Whitehouse sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); 654197b12d6SGreg Kroah-Hartman kobject_put(&sdp->sd_kobj); 655b3b94faaSDavid Teigland } 656b3b94faaSDavid Teigland 657fdd1062eSSteven Whitehouse static int gfs2_uevent(struct kset *kset, struct kobject *kobj, 658fdd1062eSSteven Whitehouse struct kobj_uevent_env *env) 659fdd1062eSSteven Whitehouse { 660fdd1062eSSteven Whitehouse struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 66132e471efSSteven Whitehouse struct super_block *s = sdp->sd_vfs; 66232e471efSSteven Whitehouse const u8 *uuid = s->s_uuid; 66302e3cc70SSteven Whitehouse 664fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); 665fdd1062eSSteven Whitehouse add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); 666ba6e9364SSteven Whitehouse if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags)) 667feb47ca9SSteven Whitehouse add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid); 668f0b34ae6SJoe Perches if (gfs2_uuid_valid(uuid)) 669f0b34ae6SJoe Perches add_uevent_var(env, "UUID=%pUB", uuid); 670fdd1062eSSteven Whitehouse return 0; 671fdd1062eSSteven Whitehouse } 672fdd1062eSSteven Whitehouse 6739cd43611SEmese Revfy static const struct kset_uevent_ops gfs2_uevent_ops = { 674fdd1062eSSteven Whitehouse .uevent = gfs2_uevent, 675fdd1062eSSteven Whitehouse }; 676fdd1062eSSteven Whitehouse 677b3b94faaSDavid Teigland int gfs2_sys_init(void) 678b3b94faaSDavid Teigland { 679fdd1062eSSteven Whitehouse gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); 6809bec101aSGreg Kroah-Hartman if (!gfs2_kset) 6819bec101aSGreg Kroah-Hartman return -ENOMEM; 6829bec101aSGreg Kroah-Hartman return 0; 683b3b94faaSDavid Teigland } 684b3b94faaSDavid Teigland 685b3b94faaSDavid Teigland void gfs2_sys_uninit(void) 686b3b94faaSDavid Teigland { 6879bec101aSGreg Kroah-Hartman kset_unregister(gfs2_kset); 688b3b94faaSDavid Teigland } 689b3b94faaSDavid Teigland 690