David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Steven Whitehouse | 3a8a9a1 | 2006-05-18 15:09:15 -0400 | [diff] [blame] | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 4 | * |
| 5 | * This copyrighted material is made available to anyone wishing to use, |
| 6 | * modify, copy, or redistribute it subject to the terms and conditions |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <linux/sched.h> |
| 11 | #include <linux/slab.h> |
| 12 | #include <linux/spinlock.h> |
| 13 | #include <linux/completion.h> |
| 14 | #include <linux/buffer_head.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/kobject.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 17 | #include <asm/uaccess.h> |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 18 | #include <linux/gfs2_ondisk.h> |
Steven Whitehouse | 31e54b0 | 2009-08-13 12:18:08 +0100 | [diff] [blame] | 19 | #include <linux/genhd.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 20 | |
| 21 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 22 | #include "incore.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 23 | #include "sys.h" |
| 24 | #include "super.h" |
| 25 | #include "glock.h" |
| 26 | #include "quota.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 27 | #include "util.h" |
Steven Whitehouse | 64d576b | 2009-02-12 13:31:58 +0000 | [diff] [blame] | 28 | #include "glops.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 29 | |
Steven Whitehouse | 48c2b61 | 2009-05-13 14:49:48 +0100 | [diff] [blame] | 30 | struct gfs2_attr { |
| 31 | struct attribute attr; |
| 32 | ssize_t (*show)(struct gfs2_sbd *, char *); |
| 33 | ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); |
| 34 | }; |
| 35 | |
| 36 | static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, |
| 37 | char *buf) |
| 38 | { |
| 39 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); |
| 40 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); |
| 41 | return a->show ? a->show(sdp, buf) : 0; |
| 42 | } |
| 43 | |
| 44 | static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, |
| 45 | const char *buf, size_t len) |
| 46 | { |
| 47 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); |
| 48 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); |
| 49 | return a->store ? a->store(sdp, buf, len) : len; |
| 50 | } |
| 51 | |
Emese Revfy | 52cf25d | 2010-01-19 02:58:23 +0100 | [diff] [blame] | 52 | static const struct sysfs_ops gfs2_attr_ops = { |
Steven Whitehouse | 48c2b61 | 2009-05-13 14:49:48 +0100 | [diff] [blame] | 53 | .show = gfs2_attr_show, |
| 54 | .store = gfs2_attr_store, |
| 55 | }; |
| 56 | |
| 57 | |
| 58 | static struct kset *gfs2_kset; |
| 59 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 60 | static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) |
| 61 | { |
Bob Peterson | c7227e4 | 2007-11-02 09:37:15 -0500 | [diff] [blame] | 62 | return snprintf(buf, PAGE_SIZE, "%u:%u\n", |
| 63 | MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 64 | } |
| 65 | |
| 66 | static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) |
| 67 | { |
David Teigland | 3204a6c | 2006-09-06 16:57:06 -0500 | [diff] [blame] | 68 | return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 69 | } |
| 70 | |
Steven Whitehouse | 02e3cc7 | 2009-02-10 13:48:30 +0000 | [diff] [blame] | 71 | static int gfs2_uuid_valid(const u8 *uuid) |
| 72 | { |
| 73 | int i; |
| 74 | |
| 75 | for (i = 0; i < 16; i++) { |
| 76 | if (uuid[i]) |
| 77 | return 1; |
| 78 | } |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf) |
| 83 | { |
| 84 | const u8 *uuid = sdp->sd_sb.sb_uuid; |
| 85 | buf[0] = '\0'; |
| 86 | if (!gfs2_uuid_valid(uuid)) |
| 87 | return 0; |
Joe Perches | f0b34ae | 2009-12-14 18:01:13 -0800 | [diff] [blame] | 88 | return snprintf(buf, PAGE_SIZE, "%pUB\n", uuid); |
Steven Whitehouse | 02e3cc7 | 2009-02-10 13:48:30 +0000 | [diff] [blame] | 89 | } |
| 90 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 91 | static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) |
| 92 | { |
| 93 | unsigned int count; |
| 94 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 95 | mutex_lock(&sdp->sd_freeze_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 96 | count = sdp->sd_freeze_count; |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 97 | mutex_unlock(&sdp->sd_freeze_lock); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 98 | |
David Teigland | 3204a6c | 2006-09-06 16:57:06 -0500 | [diff] [blame] | 99 | return snprintf(buf, PAGE_SIZE, "%u\n", count); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
| 103 | { |
| 104 | ssize_t ret = len; |
| 105 | int error = 0; |
| 106 | int n = simple_strtol(buf, NULL, 0); |
| 107 | |
| 108 | if (!capable(CAP_SYS_ADMIN)) |
| 109 | return -EACCES; |
| 110 | |
| 111 | switch (n) { |
| 112 | case 0: |
| 113 | gfs2_unfreeze_fs(sdp); |
| 114 | break; |
| 115 | case 1: |
| 116 | error = gfs2_freeze_fs(sdp); |
| 117 | break; |
| 118 | default: |
| 119 | ret = -EINVAL; |
| 120 | } |
| 121 | |
| 122 | if (error) |
| 123 | fs_warn(sdp, "freeze %d error %d", n, error); |
| 124 | |
| 125 | return ret; |
| 126 | } |
| 127 | |
| 128 | static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) |
| 129 | { |
| 130 | unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); |
David Teigland | 3204a6c | 2006-09-06 16:57:06 -0500 | [diff] [blame] | 131 | return snprintf(buf, PAGE_SIZE, "%u\n", b); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
| 135 | { |
| 136 | if (!capable(CAP_SYS_ADMIN)) |
| 137 | return -EACCES; |
| 138 | |
| 139 | if (simple_strtol(buf, NULL, 0) != 1) |
| 140 | return -EINVAL; |
| 141 | |
| 142 | gfs2_lm_withdraw(sdp, |
| 143 | "GFS2: fsid=%s: withdrawing from cluster at user's request\n", |
| 144 | sdp->sd_fsname); |
| 145 | return len; |
| 146 | } |
| 147 | |
| 148 | static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, |
| 149 | size_t len) |
| 150 | { |
| 151 | if (!capable(CAP_SYS_ADMIN)) |
| 152 | return -EACCES; |
| 153 | |
| 154 | if (simple_strtol(buf, NULL, 0) != 1) |
| 155 | return -EINVAL; |
| 156 | |
Steven Whitehouse | 8c42d63 | 2009-09-11 14:36:44 +0100 | [diff] [blame] | 157 | gfs2_statfs_sync(sdp->sd_vfs, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 158 | return len; |
| 159 | } |
| 160 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 161 | static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, |
| 162 | size_t len) |
| 163 | { |
| 164 | if (!capable(CAP_SYS_ADMIN)) |
| 165 | return -EACCES; |
| 166 | |
| 167 | if (simple_strtol(buf, NULL, 0) != 1) |
| 168 | return -EINVAL; |
| 169 | |
Christoph Hellwig | 5fb324a | 2010-02-16 03:44:52 -0500 | [diff] [blame] | 170 | gfs2_quota_sync(sdp->sd_vfs, 0, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 171 | return len; |
| 172 | } |
| 173 | |
| 174 | static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, |
| 175 | size_t len) |
| 176 | { |
Steven Whitehouse | ea76233 | 2009-09-15 16:20:30 +0100 | [diff] [blame] | 177 | int error; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 178 | u32 id; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 179 | |
| 180 | if (!capable(CAP_SYS_ADMIN)) |
| 181 | return -EACCES; |
| 182 | |
| 183 | id = simple_strtoul(buf, NULL, 0); |
| 184 | |
Steven Whitehouse | ea76233 | 2009-09-15 16:20:30 +0100 | [diff] [blame] | 185 | error = gfs2_quota_refresh(sdp, 1, id); |
| 186 | return error ? error : len; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, |
| 190 | size_t len) |
| 191 | { |
Steven Whitehouse | ea76233 | 2009-09-15 16:20:30 +0100 | [diff] [blame] | 192 | int error; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 193 | u32 id; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 194 | |
| 195 | if (!capable(CAP_SYS_ADMIN)) |
| 196 | return -EACCES; |
| 197 | |
| 198 | id = simple_strtoul(buf, NULL, 0); |
| 199 | |
Steven Whitehouse | ea76233 | 2009-09-15 16:20:30 +0100 | [diff] [blame] | 200 | error = gfs2_quota_refresh(sdp, 0, id); |
| 201 | return error ? error : len; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 202 | } |
| 203 | |
Steven Whitehouse | 64d576b | 2009-02-12 13:31:58 +0000 | [diff] [blame] | 204 | static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
| 205 | { |
| 206 | struct gfs2_glock *gl; |
| 207 | const struct gfs2_glock_operations *glops; |
| 208 | unsigned int glmode; |
| 209 | unsigned int gltype; |
| 210 | unsigned long long glnum; |
| 211 | char mode[16]; |
| 212 | int rv; |
| 213 | |
| 214 | if (!capable(CAP_SYS_ADMIN)) |
| 215 | return -EACCES; |
| 216 | |
| 217 | rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum, |
| 218 | mode); |
| 219 | if (rv != 3) |
| 220 | return -EINVAL; |
| 221 | |
| 222 | if (strcmp(mode, "EX") == 0) |
| 223 | glmode = LM_ST_UNLOCKED; |
| 224 | else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0)) |
| 225 | glmode = LM_ST_DEFERRED; |
| 226 | else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0)) |
| 227 | glmode = LM_ST_SHARED; |
| 228 | else |
| 229 | return -EINVAL; |
| 230 | |
| 231 | if (gltype > LM_TYPE_JOURNAL) |
| 232 | return -EINVAL; |
| 233 | glops = gfs2_glops_list[gltype]; |
| 234 | if (glops == NULL) |
| 235 | return -EINVAL; |
Steven Whitehouse | 6a99be5 | 2010-05-14 14:05:51 +0100 | [diff] [blame^] | 236 | if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) |
Steven Whitehouse | 913a71d | 2010-05-06 11:03:29 +0100 | [diff] [blame] | 237 | fs_info(sdp, "demote interface used\n"); |
Steven Whitehouse | 64d576b | 2009-02-12 13:31:58 +0000 | [diff] [blame] | 238 | rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); |
| 239 | if (rv) |
| 240 | return rv; |
| 241 | gfs2_glock_cb(gl, glmode); |
| 242 | gfs2_glock_put(gl); |
| 243 | return len; |
| 244 | } |
| 245 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 246 | |
| 247 | #define GFS2_ATTR(name, mode, show, store) \ |
| 248 | static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) |
| 249 | |
| 250 | GFS2_ATTR(id, 0444, id_show, NULL); |
| 251 | GFS2_ATTR(fsname, 0444, fsname_show, NULL); |
Steven Whitehouse | 02e3cc7 | 2009-02-10 13:48:30 +0000 | [diff] [blame] | 252 | GFS2_ATTR(uuid, 0444, uuid_show, NULL); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 253 | GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 254 | GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); |
| 255 | GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); |
| 256 | GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); |
| 257 | GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); |
| 258 | GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); |
Steven Whitehouse | 64d576b | 2009-02-12 13:31:58 +0000 | [diff] [blame] | 259 | GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 260 | |
| 261 | static struct attribute *gfs2_attrs[] = { |
| 262 | &gfs2_attr_id.attr, |
| 263 | &gfs2_attr_fsname.attr, |
Steven Whitehouse | 02e3cc7 | 2009-02-10 13:48:30 +0000 | [diff] [blame] | 264 | &gfs2_attr_uuid.attr, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 265 | &gfs2_attr_freeze.attr, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 266 | &gfs2_attr_withdraw.attr, |
| 267 | &gfs2_attr_statfs_sync.attr, |
| 268 | &gfs2_attr_quota_sync.attr, |
| 269 | &gfs2_attr_quota_refresh_user.attr, |
| 270 | &gfs2_attr_quota_refresh_group.attr, |
Steven Whitehouse | 64d576b | 2009-02-12 13:31:58 +0000 | [diff] [blame] | 271 | &gfs2_attr_demote_rq.attr, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 272 | NULL, |
| 273 | }; |
| 274 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 275 | static struct kobj_type gfs2_ktype = { |
| 276 | .default_attrs = gfs2_attrs, |
| 277 | .sysfs_ops = &gfs2_attr_ops, |
| 278 | }; |
| 279 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 280 | |
| 281 | /* |
| 282 | * lock_module. Originally from lock_dlm |
| 283 | */ |
| 284 | |
| 285 | static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf) |
| 286 | { |
| 287 | const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops; |
| 288 | return sprintf(buf, "%s\n", ops->lm_proto_name); |
| 289 | } |
| 290 | |
| 291 | static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) |
| 292 | { |
| 293 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
| 294 | ssize_t ret; |
| 295 | int val = 0; |
| 296 | |
| 297 | if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_flags)) |
| 298 | val = 1; |
| 299 | ret = sprintf(buf, "%d\n", val); |
| 300 | return ret; |
| 301 | } |
| 302 | |
| 303 | static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
| 304 | { |
| 305 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
| 306 | ssize_t ret = len; |
| 307 | int val; |
| 308 | |
| 309 | val = simple_strtol(buf, NULL, 0); |
| 310 | |
| 311 | if (val == 1) |
| 312 | set_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); |
| 313 | else if (val == 0) { |
| 314 | clear_bit(DFL_BLOCK_LOCKS, &ls->ls_flags); |
| 315 | smp_mb__after_clear_bit(); |
| 316 | gfs2_glock_thaw(sdp); |
| 317 | } else { |
| 318 | ret = -EINVAL; |
| 319 | } |
| 320 | return ret; |
| 321 | } |
| 322 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 323 | static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) |
| 324 | { |
| 325 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
| 326 | return sprintf(buf, "%d\n", ls->ls_first); |
| 327 | } |
| 328 | |
| 329 | static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf) |
| 330 | { |
| 331 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
| 332 | return sprintf(buf, "%d\n", ls->ls_first_done); |
| 333 | } |
| 334 | |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 335 | static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len) |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 336 | { |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 337 | unsigned jid; |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 338 | struct gfs2_jdesc *jd; |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 339 | int rv; |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 340 | |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 341 | rv = sscanf(buf, "%u", &jid); |
| 342 | if (rv != 1) |
| 343 | return -EINVAL; |
| 344 | |
| 345 | rv = -ESHUTDOWN; |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 346 | spin_lock(&sdp->sd_jindex_spin); |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 347 | if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) |
| 348 | goto out; |
| 349 | rv = -EBUSY; |
| 350 | if (sdp->sd_jdesc->jd_jid == jid) |
| 351 | goto out; |
| 352 | rv = -ENOENT; |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 353 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
| 354 | if (jd->jd_jid != jid) |
| 355 | continue; |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 356 | rv = slow_work_enqueue(&jd->jd_work); |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 357 | break; |
| 358 | } |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 359 | out: |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 360 | spin_unlock(&sdp->sd_jindex_spin); |
Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 361 | return rv ? rv : len; |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 362 | } |
| 363 | |
| 364 | static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf) |
| 365 | { |
| 366 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
| 367 | return sprintf(buf, "%d\n", ls->ls_recover_jid_done); |
| 368 | } |
| 369 | |
| 370 | static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf) |
| 371 | { |
| 372 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
| 373 | return sprintf(buf, "%d\n", ls->ls_recover_jid_status); |
| 374 | } |
| 375 | |
Steven Whitehouse | e1b28aa | 2009-05-26 15:41:27 +0100 | [diff] [blame] | 376 | static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf) |
| 377 | { |
| 378 | return sprintf(buf, "%u\n", sdp->sd_lockstruct.ls_jid); |
| 379 | } |
| 380 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 381 | #define GDLM_ATTR(_name,_mode,_show,_store) \ |
Steven Whitehouse | 48c2b61 | 2009-05-13 14:49:48 +0100 | [diff] [blame] | 382 | static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store) |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 383 | |
Steven Whitehouse | d7e623d | 2009-08-11 11:20:11 +0100 | [diff] [blame] | 384 | GDLM_ATTR(proto_name, 0444, proto_name_show, NULL); |
| 385 | GDLM_ATTR(block, 0644, block_show, block_store); |
| 386 | GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store); |
Steven Whitehouse | d7e623d | 2009-08-11 11:20:11 +0100 | [diff] [blame] | 387 | GDLM_ATTR(jid, 0444, jid_show, NULL); |
| 388 | GDLM_ATTR(first, 0444, lkfirst_show, NULL); |
| 389 | GDLM_ATTR(first_done, 0444, first_done_show, NULL); |
| 390 | GDLM_ATTR(recover, 0600, NULL, recover_store); |
| 391 | GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); |
| 392 | GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 393 | |
| 394 | static struct attribute *lock_module_attrs[] = { |
| 395 | &gdlm_attr_proto_name.attr, |
| 396 | &gdlm_attr_block.attr, |
| 397 | &gdlm_attr_withdraw.attr, |
Steven Whitehouse | e1b28aa | 2009-05-26 15:41:27 +0100 | [diff] [blame] | 398 | &gdlm_attr_jid.attr, |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 399 | &gdlm_attr_first.attr, |
| 400 | &gdlm_attr_first_done.attr, |
| 401 | &gdlm_attr_recover.attr, |
| 402 | &gdlm_attr_recover_done.attr, |
| 403 | &gdlm_attr_recover_status.attr, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 404 | NULL, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 405 | }; |
| 406 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 407 | /* |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 408 | * get and set struct gfs2_tune fields |
| 409 | */ |
| 410 | |
| 411 | static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) |
| 412 | { |
David Teigland | 3204a6c | 2006-09-06 16:57:06 -0500 | [diff] [blame] | 413 | return snprintf(buf, PAGE_SIZE, "%u %u\n", |
| 414 | sdp->sd_tune.gt_quota_scale_num, |
| 415 | sdp->sd_tune.gt_quota_scale_den); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 416 | } |
| 417 | |
| 418 | static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, |
| 419 | size_t len) |
| 420 | { |
| 421 | struct gfs2_tune *gt = &sdp->sd_tune; |
| 422 | unsigned int x, y; |
| 423 | |
| 424 | if (!capable(CAP_SYS_ADMIN)) |
| 425 | return -EACCES; |
| 426 | |
| 427 | if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) |
| 428 | return -EINVAL; |
| 429 | |
| 430 | spin_lock(>->gt_spin); |
| 431 | gt->gt_quota_scale_num = x; |
| 432 | gt->gt_quota_scale_den = y; |
| 433 | spin_unlock(>->gt_spin); |
| 434 | return len; |
| 435 | } |
| 436 | |
| 437 | static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, |
| 438 | int check_zero, const char *buf, size_t len) |
| 439 | { |
| 440 | struct gfs2_tune *gt = &sdp->sd_tune; |
| 441 | unsigned int x; |
| 442 | |
| 443 | if (!capable(CAP_SYS_ADMIN)) |
| 444 | return -EACCES; |
| 445 | |
| 446 | x = simple_strtoul(buf, NULL, 0); |
| 447 | |
| 448 | if (check_zero && !x) |
| 449 | return -EINVAL; |
| 450 | |
| 451 | spin_lock(>->gt_spin); |
| 452 | *field = x; |
| 453 | spin_unlock(>->gt_spin); |
| 454 | return len; |
| 455 | } |
| 456 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 457 | #define TUNE_ATTR_3(name, show, store) \ |
Steven Whitehouse | 48c2b61 | 2009-05-13 14:49:48 +0100 | [diff] [blame] | 458 | static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 459 | |
| 460 | #define TUNE_ATTR_2(name, store) \ |
| 461 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ |
| 462 | { \ |
David Teigland | 3204a6c | 2006-09-06 16:57:06 -0500 | [diff] [blame] | 463 | return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 464 | } \ |
| 465 | TUNE_ATTR_3(name, name##_show, store) |
| 466 | |
| 467 | #define TUNE_ATTR(name, check_zero) \ |
| 468 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ |
| 469 | { \ |
| 470 | return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ |
| 471 | } \ |
| 472 | TUNE_ATTR_2(name, name##_store) |
| 473 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 474 | TUNE_ATTR(quota_warn_period, 0); |
| 475 | TUNE_ATTR(quota_quantum, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 476 | TUNE_ATTR(max_readahead, 0); |
| 477 | TUNE_ATTR(complain_secs, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 478 | TUNE_ATTR(statfs_slow, 0); |
| 479 | TUNE_ATTR(new_files_jdata, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 480 | TUNE_ATTR(quota_simul_sync, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 481 | TUNE_ATTR(statfs_quantum, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 482 | TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); |
| 483 | |
| 484 | static struct attribute *tune_attrs[] = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 485 | &tune_attr_quota_warn_period.attr, |
| 486 | &tune_attr_quota_quantum.attr, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 487 | &tune_attr_max_readahead.attr, |
| 488 | &tune_attr_complain_secs.attr, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 489 | &tune_attr_statfs_slow.attr, |
| 490 | &tune_attr_quota_simul_sync.attr, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 491 | &tune_attr_statfs_quantum.attr, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 492 | &tune_attr_quota_scale.attr, |
| 493 | &tune_attr_new_files_jdata.attr, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 494 | NULL, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 495 | }; |
| 496 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 497 | static struct attribute_group tune_group = { |
| 498 | .name = "tune", |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 499 | .attrs = tune_attrs, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 500 | }; |
| 501 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 502 | static struct attribute_group lock_module_group = { |
| 503 | .name = "lock_module", |
| 504 | .attrs = lock_module_attrs, |
| 505 | }; |
| 506 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 507 | int gfs2_sys_fs_add(struct gfs2_sbd *sdp) |
| 508 | { |
Steven Whitehouse | 440d6da | 2009-07-31 12:16:25 +0100 | [diff] [blame] | 509 | struct super_block *sb = sdp->sd_vfs; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 510 | int error; |
Steven Whitehouse | 440d6da | 2009-07-31 12:16:25 +0100 | [diff] [blame] | 511 | char ro[20]; |
| 512 | char spectator[20]; |
| 513 | char *envp[] = { ro, spectator, NULL }; |
| 514 | |
| 515 | sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); |
| 516 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 517 | |
Greg Kroah-Hartman | 9bec101 | 2007-10-29 20:13:17 +0100 | [diff] [blame] | 518 | sdp->sd_kobj.kset = gfs2_kset; |
Greg Kroah-Hartman | 901195e | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 519 | error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, |
| 520 | "%s", sdp->sd_table_name); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 521 | if (error) |
| 522 | goto fail; |
| 523 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 524 | error = sysfs_create_group(&sdp->sd_kobj, &tune_group); |
| 525 | if (error) |
Steven Whitehouse | f6eb534 | 2009-05-26 15:50:25 +0100 | [diff] [blame] | 526 | goto fail_reg; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 527 | |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 528 | error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group); |
| 529 | if (error) |
| 530 | goto fail_tune; |
| 531 | |
Steven Whitehouse | 31e54b0 | 2009-08-13 12:18:08 +0100 | [diff] [blame] | 532 | error = sysfs_create_link(&sdp->sd_kobj, |
| 533 | &disk_to_dev(sb->s_bdev->bd_disk)->kobj, |
| 534 | "device"); |
| 535 | if (error) |
| 536 | goto fail_lock_module; |
| 537 | |
Steven Whitehouse | 440d6da | 2009-07-31 12:16:25 +0100 | [diff] [blame] | 538 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 539 | return 0; |
| 540 | |
Steven Whitehouse | 31e54b0 | 2009-08-13 12:18:08 +0100 | [diff] [blame] | 541 | fail_lock_module: |
| 542 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 543 | fail_tune: |
| 544 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 545 | fail_reg: |
Greg Kroah-Hartman | 197b12d | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 546 | kobject_put(&sdp->sd_kobj); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 547 | fail: |
David Teigland | 65952fb | 2006-09-15 13:09:11 -0500 | [diff] [blame] | 548 | fs_err(sdp, "error %d adding sysfs files", error); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 549 | return error; |
| 550 | } |
| 551 | |
| 552 | void gfs2_sys_fs_del(struct gfs2_sbd *sdp) |
| 553 | { |
Steven Whitehouse | 31e54b0 | 2009-08-13 12:18:08 +0100 | [diff] [blame] | 554 | sysfs_remove_link(&sdp->sd_kobj, "device"); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 555 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); |
Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 556 | sysfs_remove_group(&sdp->sd_kobj, &lock_module_group); |
Greg Kroah-Hartman | 197b12d | 2007-12-20 08:13:05 -0800 | [diff] [blame] | 557 | kobject_put(&sdp->sd_kobj); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 558 | } |
| 559 | |
Steven Whitehouse | fdd1062 | 2008-11-26 10:26:38 +0000 | [diff] [blame] | 560 | static int gfs2_uevent(struct kset *kset, struct kobject *kobj, |
| 561 | struct kobj_uevent_env *env) |
| 562 | { |
| 563 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); |
Steven Whitehouse | 02e3cc7 | 2009-02-10 13:48:30 +0000 | [diff] [blame] | 564 | const u8 *uuid = sdp->sd_sb.sb_uuid; |
| 565 | |
Steven Whitehouse | fdd1062 | 2008-11-26 10:26:38 +0000 | [diff] [blame] | 566 | add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name); |
| 567 | add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name); |
Steven Whitehouse | 440d6da | 2009-07-31 12:16:25 +0100 | [diff] [blame] | 568 | if (!sdp->sd_args.ar_spectator) |
| 569 | add_uevent_var(env, "JOURNALID=%u", sdp->sd_lockstruct.ls_jid); |
Joe Perches | f0b34ae | 2009-12-14 18:01:13 -0800 | [diff] [blame] | 570 | if (gfs2_uuid_valid(uuid)) |
| 571 | add_uevent_var(env, "UUID=%pUB", uuid); |
Steven Whitehouse | fdd1062 | 2008-11-26 10:26:38 +0000 | [diff] [blame] | 572 | return 0; |
| 573 | } |
| 574 | |
Emese Revfy | 9cd4361 | 2009-12-31 14:52:51 +0100 | [diff] [blame] | 575 | static const struct kset_uevent_ops gfs2_uevent_ops = { |
Steven Whitehouse | fdd1062 | 2008-11-26 10:26:38 +0000 | [diff] [blame] | 576 | .uevent = gfs2_uevent, |
| 577 | }; |
| 578 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 579 | int gfs2_sys_init(void) |
| 580 | { |
Steven Whitehouse | fdd1062 | 2008-11-26 10:26:38 +0000 | [diff] [blame] | 581 | gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj); |
Greg Kroah-Hartman | 9bec101 | 2007-10-29 20:13:17 +0100 | [diff] [blame] | 582 | if (!gfs2_kset) |
| 583 | return -ENOMEM; |
| 584 | return 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | void gfs2_sys_uninit(void) |
| 588 | { |
Greg Kroah-Hartman | 9bec101 | 2007-10-29 20:13:17 +0100 | [diff] [blame] | 589 | kset_unregister(gfs2_kset); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 590 | } |
| 591 | |