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> 175c676f6dSSteven Whitehouse #include <linux/gfs2_ondisk.h> 18b3b94faaSDavid Teigland #include <asm/uaccess.h> 19b3b94faaSDavid Teigland 20b3b94faaSDavid Teigland #include "gfs2.h" 215c676f6dSSteven Whitehouse #include "lm_interface.h" 225c676f6dSSteven Whitehouse #include "incore.h" 23b3b94faaSDavid Teigland #include "lm.h" 24b3b94faaSDavid Teigland #include "sys.h" 25b3b94faaSDavid Teigland #include "super.h" 26b3b94faaSDavid Teigland #include "glock.h" 27b3b94faaSDavid Teigland #include "quota.h" 285c676f6dSSteven Whitehouse #include "util.h" 29b3b94faaSDavid Teigland 30b3b94faaSDavid Teigland char *gfs2_sys_margs; 31b3b94faaSDavid Teigland spinlock_t gfs2_sys_margs_lock; 32b3b94faaSDavid Teigland 33b3b94faaSDavid Teigland static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) 34b3b94faaSDavid Teigland { 35b3b94faaSDavid Teigland return sprintf(buf, "%s\n", sdp->sd_vfs->s_id); 36b3b94faaSDavid Teigland } 37b3b94faaSDavid Teigland 38b3b94faaSDavid Teigland static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) 39b3b94faaSDavid Teigland { 40b3b94faaSDavid Teigland return sprintf(buf, "%s\n", sdp->sd_fsname); 41b3b94faaSDavid Teigland } 42b3b94faaSDavid Teigland 43b3b94faaSDavid Teigland static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) 44b3b94faaSDavid Teigland { 45b3b94faaSDavid Teigland unsigned int count; 46b3b94faaSDavid Teigland 47f55ab26aSSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 48b3b94faaSDavid Teigland count = sdp->sd_freeze_count; 49f55ab26aSSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 50b3b94faaSDavid Teigland 51b3b94faaSDavid Teigland return sprintf(buf, "%u\n", count); 52b3b94faaSDavid Teigland } 53b3b94faaSDavid Teigland 54b3b94faaSDavid Teigland static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 55b3b94faaSDavid Teigland { 56b3b94faaSDavid Teigland ssize_t ret = len; 57b3b94faaSDavid Teigland int error = 0; 58b3b94faaSDavid Teigland int n = simple_strtol(buf, NULL, 0); 59b3b94faaSDavid Teigland 60b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 61b3b94faaSDavid Teigland return -EACCES; 62b3b94faaSDavid Teigland 63b3b94faaSDavid Teigland switch (n) { 64b3b94faaSDavid Teigland case 0: 65b3b94faaSDavid Teigland gfs2_unfreeze_fs(sdp); 66b3b94faaSDavid Teigland break; 67b3b94faaSDavid Teigland case 1: 68b3b94faaSDavid Teigland error = gfs2_freeze_fs(sdp); 69b3b94faaSDavid Teigland break; 70b3b94faaSDavid Teigland default: 71b3b94faaSDavid Teigland ret = -EINVAL; 72b3b94faaSDavid Teigland } 73b3b94faaSDavid Teigland 74b3b94faaSDavid Teigland if (error) 75b3b94faaSDavid Teigland fs_warn(sdp, "freeze %d error %d", n, error); 76b3b94faaSDavid Teigland 77b3b94faaSDavid Teigland return ret; 78b3b94faaSDavid Teigland } 79b3b94faaSDavid Teigland 80b3b94faaSDavid Teigland static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) 81b3b94faaSDavid Teigland { 82b3b94faaSDavid Teigland unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); 83b3b94faaSDavid Teigland return sprintf(buf, "%u\n", b); 84b3b94faaSDavid Teigland } 85b3b94faaSDavid Teigland 86b3b94faaSDavid Teigland static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 87b3b94faaSDavid Teigland { 88b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 89b3b94faaSDavid Teigland return -EACCES; 90b3b94faaSDavid Teigland 91b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 92b3b94faaSDavid Teigland return -EINVAL; 93b3b94faaSDavid Teigland 94b3b94faaSDavid Teigland gfs2_lm_withdraw(sdp, 95b3b94faaSDavid Teigland "GFS2: fsid=%s: withdrawing from cluster at user's request\n", 96b3b94faaSDavid Teigland sdp->sd_fsname); 97b3b94faaSDavid Teigland return len; 98b3b94faaSDavid Teigland } 99b3b94faaSDavid Teigland 100b3b94faaSDavid Teigland static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, 101b3b94faaSDavid Teigland size_t len) 102b3b94faaSDavid Teigland { 103b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 104b3b94faaSDavid Teigland return -EACCES; 105b3b94faaSDavid Teigland 106b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 107b3b94faaSDavid Teigland return -EINVAL; 108b3b94faaSDavid Teigland 109b3b94faaSDavid Teigland gfs2_statfs_sync(sdp); 110b3b94faaSDavid Teigland return len; 111b3b94faaSDavid Teigland } 112b3b94faaSDavid Teigland 113b3b94faaSDavid Teigland static ssize_t shrink_store(struct gfs2_sbd *sdp, const char *buf, size_t len) 114b3b94faaSDavid Teigland { 115b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 116b3b94faaSDavid Teigland return -EACCES; 117b3b94faaSDavid Teigland 118b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 119b3b94faaSDavid Teigland return -EINVAL; 120b3b94faaSDavid Teigland 121b3b94faaSDavid Teigland gfs2_gl_hash_clear(sdp, NO_WAIT); 122b3b94faaSDavid Teigland return len; 123b3b94faaSDavid Teigland } 124b3b94faaSDavid Teigland 125b3b94faaSDavid Teigland static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, 126b3b94faaSDavid Teigland size_t len) 127b3b94faaSDavid Teigland { 128b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 129b3b94faaSDavid Teigland return -EACCES; 130b3b94faaSDavid Teigland 131b3b94faaSDavid Teigland if (simple_strtol(buf, NULL, 0) != 1) 132b3b94faaSDavid Teigland return -EINVAL; 133b3b94faaSDavid Teigland 134b3b94faaSDavid Teigland gfs2_quota_sync(sdp); 135b3b94faaSDavid Teigland return len; 136b3b94faaSDavid Teigland } 137b3b94faaSDavid Teigland 138b3b94faaSDavid Teigland static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, 139b3b94faaSDavid Teigland size_t len) 140b3b94faaSDavid Teigland { 141*cd915493SSteven Whitehouse u32 id; 142b3b94faaSDavid Teigland 143b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 144b3b94faaSDavid Teigland return -EACCES; 145b3b94faaSDavid Teigland 146b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 147b3b94faaSDavid Teigland 148b3b94faaSDavid Teigland gfs2_quota_refresh(sdp, 1, id); 149b3b94faaSDavid Teigland return len; 150b3b94faaSDavid Teigland } 151b3b94faaSDavid Teigland 152b3b94faaSDavid Teigland static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, 153b3b94faaSDavid Teigland size_t len) 154b3b94faaSDavid Teigland { 155*cd915493SSteven Whitehouse u32 id; 156b3b94faaSDavid Teigland 157b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 158b3b94faaSDavid Teigland return -EACCES; 159b3b94faaSDavid Teigland 160b3b94faaSDavid Teigland id = simple_strtoul(buf, NULL, 0); 161b3b94faaSDavid Teigland 162b3b94faaSDavid Teigland gfs2_quota_refresh(sdp, 0, id); 163b3b94faaSDavid Teigland return len; 164b3b94faaSDavid Teigland } 165b3b94faaSDavid Teigland 166b3b94faaSDavid Teigland struct gfs2_attr { 167b3b94faaSDavid Teigland struct attribute attr; 168b3b94faaSDavid Teigland ssize_t (*show)(struct gfs2_sbd *, char *); 169b3b94faaSDavid Teigland ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); 170b3b94faaSDavid Teigland }; 171b3b94faaSDavid Teigland 172b3b94faaSDavid Teigland #define GFS2_ATTR(name, mode, show, store) \ 173b3b94faaSDavid Teigland static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) 174b3b94faaSDavid Teigland 175b3b94faaSDavid Teigland GFS2_ATTR(id, 0444, id_show, NULL); 176b3b94faaSDavid Teigland GFS2_ATTR(fsname, 0444, fsname_show, NULL); 177b3b94faaSDavid Teigland GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); 178b3b94faaSDavid Teigland GFS2_ATTR(shrink, 0200, NULL, shrink_store); 179b3b94faaSDavid Teigland GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); 180b3b94faaSDavid Teigland GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); 181b3b94faaSDavid Teigland GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); 182b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); 183b3b94faaSDavid Teigland GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); 184b3b94faaSDavid Teigland 185b3b94faaSDavid Teigland static struct attribute *gfs2_attrs[] = { 186b3b94faaSDavid Teigland &gfs2_attr_id.attr, 187b3b94faaSDavid Teigland &gfs2_attr_fsname.attr, 188b3b94faaSDavid Teigland &gfs2_attr_freeze.attr, 189b3b94faaSDavid Teigland &gfs2_attr_shrink.attr, 190b3b94faaSDavid Teigland &gfs2_attr_withdraw.attr, 191b3b94faaSDavid Teigland &gfs2_attr_statfs_sync.attr, 192b3b94faaSDavid Teigland &gfs2_attr_quota_sync.attr, 193b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_user.attr, 194b3b94faaSDavid Teigland &gfs2_attr_quota_refresh_group.attr, 195b3b94faaSDavid Teigland NULL, 196b3b94faaSDavid Teigland }; 197b3b94faaSDavid Teigland 198b3b94faaSDavid Teigland static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, 199b3b94faaSDavid Teigland char *buf) 200b3b94faaSDavid Teigland { 201b3b94faaSDavid Teigland struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 202b3b94faaSDavid Teigland struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); 203b3b94faaSDavid Teigland return a->show ? a->show(sdp, buf) : 0; 204b3b94faaSDavid Teigland } 205b3b94faaSDavid Teigland 206b3b94faaSDavid Teigland static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, 207b3b94faaSDavid Teigland const char *buf, size_t len) 208b3b94faaSDavid Teigland { 209b3b94faaSDavid Teigland struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); 210b3b94faaSDavid Teigland struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); 211b3b94faaSDavid Teigland return a->store ? a->store(sdp, buf, len) : len; 212b3b94faaSDavid Teigland } 213b3b94faaSDavid Teigland 214b3b94faaSDavid Teigland static struct sysfs_ops gfs2_attr_ops = { 215b3b94faaSDavid Teigland .show = gfs2_attr_show, 216b3b94faaSDavid Teigland .store = gfs2_attr_store, 217b3b94faaSDavid Teigland }; 218b3b94faaSDavid Teigland 219b3b94faaSDavid Teigland static struct kobj_type gfs2_ktype = { 220b3b94faaSDavid Teigland .default_attrs = gfs2_attrs, 221b3b94faaSDavid Teigland .sysfs_ops = &gfs2_attr_ops, 222b3b94faaSDavid Teigland }; 223b3b94faaSDavid Teigland 224b3b94faaSDavid Teigland static struct kset gfs2_kset = { 225b3b94faaSDavid Teigland .subsys = &fs_subsys, 226b3b94faaSDavid Teigland .kobj = {.name = "gfs2",}, 227b3b94faaSDavid Teigland .ktype = &gfs2_ktype, 228b3b94faaSDavid Teigland }; 229b3b94faaSDavid Teigland 230b3b94faaSDavid Teigland /* 231b3b94faaSDavid Teigland * display struct lm_lockstruct fields 232b3b94faaSDavid Teigland */ 233b3b94faaSDavid Teigland 234b3b94faaSDavid Teigland struct lockstruct_attr { 235b3b94faaSDavid Teigland struct attribute attr; 236b3b94faaSDavid Teigland ssize_t (*show)(struct gfs2_sbd *, char *); 237b3b94faaSDavid Teigland }; 238b3b94faaSDavid Teigland 239b3b94faaSDavid Teigland #define LOCKSTRUCT_ATTR(name, fmt) \ 240b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 241b3b94faaSDavid Teigland { \ 242b3b94faaSDavid Teigland return sprintf(buf, fmt, sdp->sd_lockstruct.ls_##name); \ 243b3b94faaSDavid Teigland } \ 244b3b94faaSDavid Teigland static struct lockstruct_attr lockstruct_attr_##name = __ATTR_RO(name) 245b3b94faaSDavid Teigland 246b3b94faaSDavid Teigland LOCKSTRUCT_ATTR(jid, "%u\n"); 247b3b94faaSDavid Teigland LOCKSTRUCT_ATTR(first, "%u\n"); 248b3b94faaSDavid Teigland LOCKSTRUCT_ATTR(lvb_size, "%u\n"); 249b3b94faaSDavid Teigland LOCKSTRUCT_ATTR(flags, "%d\n"); 250b3b94faaSDavid Teigland 251b3b94faaSDavid Teigland static struct attribute *lockstruct_attrs[] = { 252b3b94faaSDavid Teigland &lockstruct_attr_jid.attr, 253b3b94faaSDavid Teigland &lockstruct_attr_first.attr, 254b3b94faaSDavid Teigland &lockstruct_attr_lvb_size.attr, 255b3b94faaSDavid Teigland &lockstruct_attr_flags.attr, 256b3b94faaSDavid Teigland NULL 257b3b94faaSDavid Teigland }; 258b3b94faaSDavid Teigland 259b3b94faaSDavid Teigland /* 260b3b94faaSDavid Teigland * display struct gfs2_args fields 261b3b94faaSDavid Teigland */ 262b3b94faaSDavid Teigland 263b3b94faaSDavid Teigland struct args_attr { 264b3b94faaSDavid Teigland struct attribute attr; 265b3b94faaSDavid Teigland ssize_t (*show)(struct gfs2_sbd *, char *); 266b3b94faaSDavid Teigland }; 267b3b94faaSDavid Teigland 268b3b94faaSDavid Teigland #define ARGS_ATTR(name, fmt) \ 269b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 270b3b94faaSDavid Teigland { \ 271b3b94faaSDavid Teigland return sprintf(buf, fmt, sdp->sd_args.ar_##name); \ 272b3b94faaSDavid Teigland } \ 273b3b94faaSDavid Teigland static struct args_attr args_attr_##name = __ATTR_RO(name) 274b3b94faaSDavid Teigland 275b3b94faaSDavid Teigland ARGS_ATTR(lockproto, "%s\n"); 276b3b94faaSDavid Teigland ARGS_ATTR(locktable, "%s\n"); 277b3b94faaSDavid Teigland ARGS_ATTR(hostdata, "%s\n"); 278b3b94faaSDavid Teigland ARGS_ATTR(spectator, "%d\n"); 279b3b94faaSDavid Teigland ARGS_ATTR(ignore_local_fs, "%d\n"); 280b3b94faaSDavid Teigland ARGS_ATTR(localcaching, "%d\n"); 281b3b94faaSDavid Teigland ARGS_ATTR(localflocks, "%d\n"); 282b3b94faaSDavid Teigland ARGS_ATTR(debug, "%d\n"); 283b3b94faaSDavid Teigland ARGS_ATTR(upgrade, "%d\n"); 284b3b94faaSDavid Teigland ARGS_ATTR(num_glockd, "%u\n"); 285b3b94faaSDavid Teigland ARGS_ATTR(posix_acl, "%d\n"); 286b3b94faaSDavid Teigland ARGS_ATTR(quota, "%u\n"); 287b3b94faaSDavid Teigland ARGS_ATTR(suiddir, "%d\n"); 288b3b94faaSDavid Teigland ARGS_ATTR(data, "%d\n"); 289b3b94faaSDavid Teigland 290b3b94faaSDavid Teigland /* one oddball doesn't fit the macro mold */ 291b3b94faaSDavid Teigland static ssize_t noatime_show(struct gfs2_sbd *sdp, char *buf) 292b3b94faaSDavid Teigland { 293b3b94faaSDavid Teigland return sprintf(buf, "%d\n", !!test_bit(SDF_NOATIME, &sdp->sd_flags)); 294b3b94faaSDavid Teigland } 295b3b94faaSDavid Teigland static struct args_attr args_attr_noatime = __ATTR_RO(noatime); 296b3b94faaSDavid Teigland 297b3b94faaSDavid Teigland static struct attribute *args_attrs[] = { 298b3b94faaSDavid Teigland &args_attr_lockproto.attr, 299b3b94faaSDavid Teigland &args_attr_locktable.attr, 300b3b94faaSDavid Teigland &args_attr_hostdata.attr, 301b3b94faaSDavid Teigland &args_attr_spectator.attr, 302b3b94faaSDavid Teigland &args_attr_ignore_local_fs.attr, 303b3b94faaSDavid Teigland &args_attr_localcaching.attr, 304b3b94faaSDavid Teigland &args_attr_localflocks.attr, 305b3b94faaSDavid Teigland &args_attr_debug.attr, 306b3b94faaSDavid Teigland &args_attr_upgrade.attr, 307b3b94faaSDavid Teigland &args_attr_num_glockd.attr, 308b3b94faaSDavid Teigland &args_attr_posix_acl.attr, 309b3b94faaSDavid Teigland &args_attr_quota.attr, 310b3b94faaSDavid Teigland &args_attr_suiddir.attr, 311b3b94faaSDavid Teigland &args_attr_data.attr, 312b3b94faaSDavid Teigland &args_attr_noatime.attr, 313b3b94faaSDavid Teigland NULL 314b3b94faaSDavid Teigland }; 315b3b94faaSDavid Teigland 316b3b94faaSDavid Teigland /* 317b3b94faaSDavid Teigland * display counters from superblock 318b3b94faaSDavid Teigland */ 319b3b94faaSDavid Teigland 320b3b94faaSDavid Teigland struct counters_attr { 321b3b94faaSDavid Teigland struct attribute attr; 322b3b94faaSDavid Teigland ssize_t (*show)(struct gfs2_sbd *, char *); 323b3b94faaSDavid Teigland }; 324b3b94faaSDavid Teigland 3256a6b3d01SDavid Teigland #define COUNTERS_ATTR(name, fmt) \ 326b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 327b3b94faaSDavid Teigland { \ 3286a6b3d01SDavid Teigland return sprintf(buf, fmt, (unsigned int)atomic_read(&sdp->sd_##name)); \ 329b3b94faaSDavid Teigland } \ 330b3b94faaSDavid Teigland static struct counters_attr counters_attr_##name = __ATTR_RO(name) 331b3b94faaSDavid Teigland 3326a6b3d01SDavid Teigland COUNTERS_ATTR(glock_count, "%u\n"); 3336a6b3d01SDavid Teigland COUNTERS_ATTR(glock_held_count, "%u\n"); 3346a6b3d01SDavid Teigland COUNTERS_ATTR(inode_count, "%u\n"); 3356a6b3d01SDavid Teigland COUNTERS_ATTR(reclaimed, "%u\n"); 336b3b94faaSDavid Teigland 337b3b94faaSDavid Teigland static struct attribute *counters_attrs[] = { 338b3b94faaSDavid Teigland &counters_attr_glock_count.attr, 339b3b94faaSDavid Teigland &counters_attr_glock_held_count.attr, 340b3b94faaSDavid Teigland &counters_attr_inode_count.attr, 341b3b94faaSDavid Teigland &counters_attr_reclaimed.attr, 342b3b94faaSDavid Teigland NULL 343b3b94faaSDavid Teigland }; 344b3b94faaSDavid Teigland 345b3b94faaSDavid Teigland /* 346b3b94faaSDavid Teigland * get and set struct gfs2_tune fields 347b3b94faaSDavid Teigland */ 348b3b94faaSDavid Teigland 349b3b94faaSDavid Teigland static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) 350b3b94faaSDavid Teigland { 351b3b94faaSDavid Teigland return sprintf(buf, "%u %u\n", sdp->sd_tune.gt_quota_scale_num, 352b3b94faaSDavid Teigland sdp->sd_tune.gt_quota_scale_den); 353b3b94faaSDavid Teigland } 354b3b94faaSDavid Teigland 355b3b94faaSDavid Teigland static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, 356b3b94faaSDavid Teigland size_t len) 357b3b94faaSDavid Teigland { 358b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 359b3b94faaSDavid Teigland unsigned int x, y; 360b3b94faaSDavid Teigland 361b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 362b3b94faaSDavid Teigland return -EACCES; 363b3b94faaSDavid Teigland 364b3b94faaSDavid Teigland if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) 365b3b94faaSDavid Teigland return -EINVAL; 366b3b94faaSDavid Teigland 367b3b94faaSDavid Teigland spin_lock(>->gt_spin); 368b3b94faaSDavid Teigland gt->gt_quota_scale_num = x; 369b3b94faaSDavid Teigland gt->gt_quota_scale_den = y; 370b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 371b3b94faaSDavid Teigland return len; 372b3b94faaSDavid Teigland } 373b3b94faaSDavid Teigland 374b3b94faaSDavid Teigland static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, 375b3b94faaSDavid Teigland int check_zero, const char *buf, size_t len) 376b3b94faaSDavid Teigland { 377b3b94faaSDavid Teigland struct gfs2_tune *gt = &sdp->sd_tune; 378b3b94faaSDavid Teigland unsigned int x; 379b3b94faaSDavid Teigland 380b3b94faaSDavid Teigland if (!capable(CAP_SYS_ADMIN)) 381b3b94faaSDavid Teigland return -EACCES; 382b3b94faaSDavid Teigland 383b3b94faaSDavid Teigland x = simple_strtoul(buf, NULL, 0); 384b3b94faaSDavid Teigland 385b3b94faaSDavid Teigland if (check_zero && !x) 386b3b94faaSDavid Teigland return -EINVAL; 387b3b94faaSDavid Teigland 388b3b94faaSDavid Teigland spin_lock(>->gt_spin); 389b3b94faaSDavid Teigland *field = x; 390b3b94faaSDavid Teigland spin_unlock(>->gt_spin); 391b3b94faaSDavid Teigland return len; 392b3b94faaSDavid Teigland } 393b3b94faaSDavid Teigland 394b3b94faaSDavid Teigland struct tune_attr { 395b3b94faaSDavid Teigland struct attribute attr; 396b3b94faaSDavid Teigland ssize_t (*show)(struct gfs2_sbd *, char *); 397b3b94faaSDavid Teigland ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); 398b3b94faaSDavid Teigland }; 399b3b94faaSDavid Teigland 400b3b94faaSDavid Teigland #define TUNE_ATTR_3(name, show, store) \ 401b3b94faaSDavid Teigland static struct tune_attr tune_attr_##name = __ATTR(name, 0644, show, store) 402b3b94faaSDavid Teigland 403b3b94faaSDavid Teigland #define TUNE_ATTR_2(name, store) \ 404b3b94faaSDavid Teigland static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ 405b3b94faaSDavid Teigland { \ 406b3b94faaSDavid Teigland return sprintf(buf, "%u\n", sdp->sd_tune.gt_##name); \ 407b3b94faaSDavid Teigland } \ 408b3b94faaSDavid Teigland TUNE_ATTR_3(name, name##_show, store) 409b3b94faaSDavid Teigland 410b3b94faaSDavid Teigland #define TUNE_ATTR(name, check_zero) \ 411b3b94faaSDavid Teigland static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ 412b3b94faaSDavid Teigland { \ 413b3b94faaSDavid Teigland return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ 414b3b94faaSDavid Teigland } \ 415b3b94faaSDavid Teigland TUNE_ATTR_2(name, name##_store) 416b3b94faaSDavid Teigland 417b3b94faaSDavid Teigland #define TUNE_ATTR_DAEMON(name, process) \ 418b3b94faaSDavid Teigland static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ 419b3b94faaSDavid Teigland { \ 420b3b94faaSDavid Teigland ssize_t r = tune_set(sdp, &sdp->sd_tune.gt_##name, 1, buf, len); \ 421b3b94faaSDavid Teigland wake_up_process(sdp->sd_##process); \ 422b3b94faaSDavid Teigland return r; \ 423b3b94faaSDavid Teigland } \ 424b3b94faaSDavid Teigland TUNE_ATTR_2(name, name##_store) 425b3b94faaSDavid Teigland 426b3b94faaSDavid Teigland TUNE_ATTR(ilimit, 0); 427b3b94faaSDavid Teigland TUNE_ATTR(ilimit_tries, 0); 428b3b94faaSDavid Teigland TUNE_ATTR(ilimit_min, 0); 429b3b94faaSDavid Teigland TUNE_ATTR(demote_secs, 0); 430b3b94faaSDavid Teigland TUNE_ATTR(incore_log_blocks, 0); 431b3b94faaSDavid Teigland TUNE_ATTR(log_flush_secs, 0); 432b3b94faaSDavid Teigland TUNE_ATTR(jindex_refresh_secs, 0); 433b3b94faaSDavid Teigland TUNE_ATTR(quota_warn_period, 0); 434b3b94faaSDavid Teigland TUNE_ATTR(quota_quantum, 0); 435b3b94faaSDavid Teigland TUNE_ATTR(atime_quantum, 0); 436b3b94faaSDavid Teigland TUNE_ATTR(max_readahead, 0); 437b3b94faaSDavid Teigland TUNE_ATTR(complain_secs, 0); 438b3b94faaSDavid Teigland TUNE_ATTR(reclaim_limit, 0); 439b3b94faaSDavid Teigland TUNE_ATTR(prefetch_secs, 0); 440b3b94faaSDavid Teigland TUNE_ATTR(statfs_slow, 0); 441b3b94faaSDavid Teigland TUNE_ATTR(new_files_jdata, 0); 442b3b94faaSDavid Teigland TUNE_ATTR(new_files_directio, 0); 443b3b94faaSDavid Teigland TUNE_ATTR(quota_simul_sync, 1); 444b3b94faaSDavid Teigland TUNE_ATTR(quota_cache_secs, 1); 445b3b94faaSDavid Teigland TUNE_ATTR(max_atomic_write, 1); 446b3b94faaSDavid Teigland TUNE_ATTR(stall_secs, 1); 447b3b94faaSDavid Teigland TUNE_ATTR(entries_per_readdir, 1); 448b3b94faaSDavid Teigland TUNE_ATTR(greedy_default, 1); 449b3b94faaSDavid Teigland TUNE_ATTR(greedy_quantum, 1); 450b3b94faaSDavid Teigland TUNE_ATTR(greedy_max, 1); 451b3b94faaSDavid Teigland TUNE_ATTR(statfs_quantum, 1); 452b3b94faaSDavid Teigland TUNE_ATTR_DAEMON(scand_secs, scand_process); 453b3b94faaSDavid Teigland TUNE_ATTR_DAEMON(recoverd_secs, recoverd_process); 454b3b94faaSDavid Teigland TUNE_ATTR_DAEMON(logd_secs, logd_process); 455b3b94faaSDavid Teigland TUNE_ATTR_DAEMON(quotad_secs, quotad_process); 456b3b94faaSDavid Teigland TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); 457b3b94faaSDavid Teigland 458b3b94faaSDavid Teigland static struct attribute *tune_attrs[] = { 459b3b94faaSDavid Teigland &tune_attr_ilimit.attr, 460b3b94faaSDavid Teigland &tune_attr_ilimit_tries.attr, 461b3b94faaSDavid Teigland &tune_attr_ilimit_min.attr, 462b3b94faaSDavid Teigland &tune_attr_demote_secs.attr, 463b3b94faaSDavid Teigland &tune_attr_incore_log_blocks.attr, 464b3b94faaSDavid Teigland &tune_attr_log_flush_secs.attr, 465b3b94faaSDavid Teigland &tune_attr_jindex_refresh_secs.attr, 466b3b94faaSDavid Teigland &tune_attr_quota_warn_period.attr, 467b3b94faaSDavid Teigland &tune_attr_quota_quantum.attr, 468b3b94faaSDavid Teigland &tune_attr_atime_quantum.attr, 469b3b94faaSDavid Teigland &tune_attr_max_readahead.attr, 470b3b94faaSDavid Teigland &tune_attr_complain_secs.attr, 471b3b94faaSDavid Teigland &tune_attr_reclaim_limit.attr, 472b3b94faaSDavid Teigland &tune_attr_prefetch_secs.attr, 473b3b94faaSDavid Teigland &tune_attr_statfs_slow.attr, 474b3b94faaSDavid Teigland &tune_attr_quota_simul_sync.attr, 475b3b94faaSDavid Teigland &tune_attr_quota_cache_secs.attr, 476b3b94faaSDavid Teigland &tune_attr_max_atomic_write.attr, 477b3b94faaSDavid Teigland &tune_attr_stall_secs.attr, 478b3b94faaSDavid Teigland &tune_attr_entries_per_readdir.attr, 479b3b94faaSDavid Teigland &tune_attr_greedy_default.attr, 480b3b94faaSDavid Teigland &tune_attr_greedy_quantum.attr, 481b3b94faaSDavid Teigland &tune_attr_greedy_max.attr, 482b3b94faaSDavid Teigland &tune_attr_statfs_quantum.attr, 483b3b94faaSDavid Teigland &tune_attr_scand_secs.attr, 484b3b94faaSDavid Teigland &tune_attr_recoverd_secs.attr, 485b3b94faaSDavid Teigland &tune_attr_logd_secs.attr, 486b3b94faaSDavid Teigland &tune_attr_quotad_secs.attr, 487b3b94faaSDavid Teigland &tune_attr_quota_scale.attr, 488b3b94faaSDavid Teigland &tune_attr_new_files_jdata.attr, 489b3b94faaSDavid Teigland &tune_attr_new_files_directio.attr, 490b3b94faaSDavid Teigland NULL 491b3b94faaSDavid Teigland }; 492b3b94faaSDavid Teigland 493b3b94faaSDavid Teigland static struct attribute_group lockstruct_group = { 494b3b94faaSDavid Teigland .name = "lockstruct", 495b3b94faaSDavid Teigland .attrs = lockstruct_attrs 496b3b94faaSDavid Teigland }; 497b3b94faaSDavid Teigland 498b3b94faaSDavid Teigland static struct attribute_group counters_group = { 499b3b94faaSDavid Teigland .name = "counters", 500b3b94faaSDavid Teigland .attrs = counters_attrs 501b3b94faaSDavid Teigland }; 502b3b94faaSDavid Teigland 503b3b94faaSDavid Teigland static struct attribute_group args_group = { 504b3b94faaSDavid Teigland .name = "args", 505b3b94faaSDavid Teigland .attrs = args_attrs 506b3b94faaSDavid Teigland }; 507b3b94faaSDavid Teigland 508b3b94faaSDavid Teigland static struct attribute_group tune_group = { 509b3b94faaSDavid Teigland .name = "tune", 510b3b94faaSDavid Teigland .attrs = tune_attrs 511b3b94faaSDavid Teigland }; 512b3b94faaSDavid Teigland 513b3b94faaSDavid Teigland int gfs2_sys_fs_add(struct gfs2_sbd *sdp) 514b3b94faaSDavid Teigland { 515b3b94faaSDavid Teigland int error; 516b3b94faaSDavid Teigland 517b3b94faaSDavid Teigland sdp->sd_kobj.kset = &gfs2_kset; 518b3b94faaSDavid Teigland sdp->sd_kobj.ktype = &gfs2_ktype; 519b3b94faaSDavid Teigland 520b3b94faaSDavid Teigland error = kobject_set_name(&sdp->sd_kobj, "%s", sdp->sd_table_name); 521b3b94faaSDavid Teigland if (error) 522b3b94faaSDavid Teigland goto fail; 523b3b94faaSDavid Teigland 524b3b94faaSDavid Teigland error = kobject_register(&sdp->sd_kobj); 525b3b94faaSDavid Teigland if (error) 526b3b94faaSDavid Teigland goto fail; 527b3b94faaSDavid Teigland 528b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &lockstruct_group); 529b3b94faaSDavid Teigland if (error) 530b3b94faaSDavid Teigland goto fail_reg; 531b3b94faaSDavid Teigland 532b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &counters_group); 533b3b94faaSDavid Teigland if (error) 534b3b94faaSDavid Teigland goto fail_lockstruct; 535b3b94faaSDavid Teigland 536b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &args_group); 537b3b94faaSDavid Teigland if (error) 538b3b94faaSDavid Teigland goto fail_counters; 539b3b94faaSDavid Teigland 540b3b94faaSDavid Teigland error = sysfs_create_group(&sdp->sd_kobj, &tune_group); 541b3b94faaSDavid Teigland if (error) 542b3b94faaSDavid Teigland goto fail_args; 543b3b94faaSDavid Teigland 544b3b94faaSDavid Teigland return 0; 545b3b94faaSDavid Teigland 546b3b94faaSDavid Teigland fail_args: 547b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &args_group); 548b3b94faaSDavid Teigland fail_counters: 549b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &counters_group); 550b3b94faaSDavid Teigland fail_lockstruct: 551b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group); 552b3b94faaSDavid Teigland fail_reg: 553b3b94faaSDavid Teigland kobject_unregister(&sdp->sd_kobj); 554b3b94faaSDavid Teigland fail: 555b3b94faaSDavid Teigland return error; 556b3b94faaSDavid Teigland } 557b3b94faaSDavid Teigland 558b3b94faaSDavid Teigland void gfs2_sys_fs_del(struct gfs2_sbd *sdp) 559b3b94faaSDavid Teigland { 560b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &tune_group); 561b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &args_group); 562b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &counters_group); 563b3b94faaSDavid Teigland sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group); 564b3b94faaSDavid Teigland kobject_unregister(&sdp->sd_kobj); 565b3b94faaSDavid Teigland } 566b3b94faaSDavid Teigland 567b3b94faaSDavid Teigland int gfs2_sys_init(void) 568b3b94faaSDavid Teigland { 569b3b94faaSDavid Teigland gfs2_sys_margs = NULL; 570b3b94faaSDavid Teigland spin_lock_init(&gfs2_sys_margs_lock); 571b3b94faaSDavid Teigland return kset_register(&gfs2_kset); 572b3b94faaSDavid Teigland } 573b3b94faaSDavid Teigland 574b3b94faaSDavid Teigland void gfs2_sys_uninit(void) 575b3b94faaSDavid Teigland { 576b3b94faaSDavid Teigland kfree(gfs2_sys_margs); 577b3b94faaSDavid Teigland kset_unregister(&gfs2_kset); 578b3b94faaSDavid Teigland } 579b3b94faaSDavid Teigland 580