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322cbb50de
There is no good reason to keep genhd.h separate from the main blkdev.h header that includes it. So fold the contents of genhd.h into blkdev.h and remove genhd.h entirely. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20220124093913.742411-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
800 lines
20 KiB
C
800 lines
20 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/sched.h>
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#include <linux/cred.h>
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#include <linux/spinlock.h>
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#include <linux/completion.h>
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#include <linux/buffer_head.h>
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#include <linux/module.h>
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#include <linux/kobject.h>
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#include <linux/uaccess.h>
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#include <linux/gfs2_ondisk.h>
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#include <linux/blkdev.h>
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#include "gfs2.h"
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#include "incore.h"
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#include "sys.h"
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#include "super.h"
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#include "glock.h"
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#include "quota.h"
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#include "util.h"
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#include "glops.h"
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#include "recovery.h"
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struct gfs2_attr {
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struct attribute attr;
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ssize_t (*show)(struct gfs2_sbd *, char *);
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ssize_t (*store)(struct gfs2_sbd *, const char *, size_t);
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};
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static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
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struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
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return a->show ? a->show(sdp, buf) : 0;
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}
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static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr,
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const char *buf, size_t len)
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{
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struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
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struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
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return a->store ? a->store(sdp, buf, len) : len;
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}
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static const struct sysfs_ops gfs2_attr_ops = {
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.show = gfs2_attr_show,
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.store = gfs2_attr_store,
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};
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static struct kset *gfs2_kset;
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static ssize_t id_show(struct gfs2_sbd *sdp, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%u:%u\n",
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MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev));
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}
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static ssize_t status_show(struct gfs2_sbd *sdp, char *buf)
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{
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unsigned long f = sdp->sd_flags;
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ssize_t s;
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s = snprintf(buf, PAGE_SIZE,
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"Journal Checked: %d\n"
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"Journal Live: %d\n"
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"Journal ID: %d\n"
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"Spectator: %d\n"
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"Withdrawn: %d\n"
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"No barriers: %d\n"
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"No recovery: %d\n"
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"Demote: %d\n"
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"No Journal ID: %d\n"
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"Mounted RO: %d\n"
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"RO Recovery: %d\n"
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"Skip DLM Unlock: %d\n"
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"Force AIL Flush: %d\n"
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"FS Frozen: %d\n"
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"Withdrawing: %d\n"
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"Withdraw In Prog: %d\n"
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"Remote Withdraw: %d\n"
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"Withdraw Recovery: %d\n"
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"sd_log_error: %d\n"
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"sd_log_flush_lock: %d\n"
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"sd_log_num_revoke: %u\n"
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"sd_log_in_flight: %d\n"
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"sd_log_blks_needed: %d\n"
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"sd_log_blks_free: %d\n"
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"sd_log_flush_head: %d\n"
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"sd_log_flush_tail: %d\n"
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"sd_log_blks_reserved: %d\n"
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"sd_log_revokes_available: %d\n",
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test_bit(SDF_JOURNAL_CHECKED, &f),
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test_bit(SDF_JOURNAL_LIVE, &f),
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(sdp->sd_jdesc ? sdp->sd_jdesc->jd_jid : 0),
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(sdp->sd_args.ar_spectator ? 1 : 0),
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test_bit(SDF_WITHDRAWN, &f),
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test_bit(SDF_NOBARRIERS, &f),
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test_bit(SDF_NORECOVERY, &f),
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test_bit(SDF_DEMOTE, &f),
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test_bit(SDF_NOJOURNALID, &f),
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(sb_rdonly(sdp->sd_vfs) ? 1 : 0),
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test_bit(SDF_RORECOVERY, &f),
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test_bit(SDF_SKIP_DLM_UNLOCK, &f),
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test_bit(SDF_FORCE_AIL_FLUSH, &f),
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test_bit(SDF_FS_FROZEN, &f),
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test_bit(SDF_WITHDRAWING, &f),
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test_bit(SDF_WITHDRAW_IN_PROG, &f),
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test_bit(SDF_REMOTE_WITHDRAW, &f),
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test_bit(SDF_WITHDRAW_RECOVERY, &f),
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sdp->sd_log_error,
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rwsem_is_locked(&sdp->sd_log_flush_lock),
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sdp->sd_log_num_revoke,
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atomic_read(&sdp->sd_log_in_flight),
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atomic_read(&sdp->sd_log_blks_needed),
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atomic_read(&sdp->sd_log_blks_free),
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sdp->sd_log_flush_head,
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sdp->sd_log_flush_tail,
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sdp->sd_log_blks_reserved,
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atomic_read(&sdp->sd_log_revokes_available));
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return s;
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}
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static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname);
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}
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static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf)
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{
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struct super_block *s = sdp->sd_vfs;
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buf[0] = '\0';
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if (uuid_is_null(&s->s_uuid))
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return 0;
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return snprintf(buf, PAGE_SIZE, "%pUB\n", &s->s_uuid);
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}
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static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
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{
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struct super_block *sb = sdp->sd_vfs;
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int frozen = (sb->s_writers.frozen == SB_UNFROZEN) ? 0 : 1;
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return snprintf(buf, PAGE_SIZE, "%d\n", frozen);
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}
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static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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int error, n;
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error = kstrtoint(buf, 0, &n);
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if (error)
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return error;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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switch (n) {
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case 0:
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error = thaw_super(sdp->sd_vfs);
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break;
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case 1:
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error = freeze_super(sdp->sd_vfs);
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break;
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default:
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return -EINVAL;
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}
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if (error) {
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fs_warn(sdp, "freeze %d error %d\n", n, error);
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return error;
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}
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return len;
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}
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static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf)
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{
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unsigned int b = gfs2_withdrawn(sdp);
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return snprintf(buf, PAGE_SIZE, "%u\n", b);
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}
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static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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int error, val;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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error = kstrtoint(buf, 0, &val);
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if (error)
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return error;
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if (val != 1)
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return -EINVAL;
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gfs2_lm(sdp, "withdrawing from cluster at user's request\n");
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gfs2_withdraw(sdp);
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return len;
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}
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static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf,
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size_t len)
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{
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int error, val;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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error = kstrtoint(buf, 0, &val);
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if (error)
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return error;
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if (val != 1)
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return -EINVAL;
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gfs2_statfs_sync(sdp->sd_vfs, 0);
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return len;
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}
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static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
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size_t len)
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{
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int error, val;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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error = kstrtoint(buf, 0, &val);
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if (error)
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return error;
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if (val != 1)
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return -EINVAL;
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gfs2_quota_sync(sdp->sd_vfs, 0);
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return len;
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}
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static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
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size_t len)
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{
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struct kqid qid;
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int error;
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u32 id;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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error = kstrtou32(buf, 0, &id);
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if (error)
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return error;
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qid = make_kqid(current_user_ns(), USRQUOTA, id);
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if (!qid_valid(qid))
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return -EINVAL;
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error = gfs2_quota_refresh(sdp, qid);
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return error ? error : len;
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}
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static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
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size_t len)
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{
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struct kqid qid;
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int error;
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u32 id;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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error = kstrtou32(buf, 0, &id);
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if (error)
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return error;
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qid = make_kqid(current_user_ns(), GRPQUOTA, id);
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if (!qid_valid(qid))
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return -EINVAL;
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error = gfs2_quota_refresh(sdp, qid);
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return error ? error : len;
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}
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static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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struct gfs2_glock *gl;
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const struct gfs2_glock_operations *glops;
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unsigned int glmode;
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unsigned int gltype;
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unsigned long long glnum;
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char mode[16];
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int rv;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum,
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mode);
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if (rv != 3)
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return -EINVAL;
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if (strcmp(mode, "EX") == 0)
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glmode = LM_ST_UNLOCKED;
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else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0))
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glmode = LM_ST_DEFERRED;
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else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0))
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glmode = LM_ST_SHARED;
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else
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return -EINVAL;
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if (gltype > LM_TYPE_JOURNAL)
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return -EINVAL;
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if (gltype == LM_TYPE_NONDISK && glnum == GFS2_FREEZE_LOCK)
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glops = &gfs2_freeze_glops;
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else
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glops = gfs2_glops_list[gltype];
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if (glops == NULL)
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return -EINVAL;
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if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags))
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fs_info(sdp, "demote interface used\n");
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rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl);
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if (rv)
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return rv;
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gfs2_glock_cb(gl, glmode);
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gfs2_glock_put(gl);
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return len;
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}
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#define GFS2_ATTR(name, mode, show, store) \
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static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store)
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GFS2_ATTR(id, 0444, id_show, NULL);
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GFS2_ATTR(fsname, 0444, fsname_show, NULL);
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GFS2_ATTR(uuid, 0444, uuid_show, NULL);
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GFS2_ATTR(freeze, 0644, freeze_show, freeze_store);
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GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store);
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GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store);
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GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store);
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GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store);
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GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store);
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GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store);
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GFS2_ATTR(status, 0400, status_show, NULL);
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static struct attribute *gfs2_attrs[] = {
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&gfs2_attr_id.attr,
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&gfs2_attr_fsname.attr,
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&gfs2_attr_uuid.attr,
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&gfs2_attr_freeze.attr,
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&gfs2_attr_withdraw.attr,
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&gfs2_attr_statfs_sync.attr,
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&gfs2_attr_quota_sync.attr,
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&gfs2_attr_quota_refresh_user.attr,
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&gfs2_attr_quota_refresh_group.attr,
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&gfs2_attr_demote_rq.attr,
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&gfs2_attr_status.attr,
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NULL,
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};
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ATTRIBUTE_GROUPS(gfs2);
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static void gfs2_sbd_release(struct kobject *kobj)
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{
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struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
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complete(&sdp->sd_kobj_unregister);
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}
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static struct kobj_type gfs2_ktype = {
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.release = gfs2_sbd_release,
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.default_groups = gfs2_groups,
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.sysfs_ops = &gfs2_attr_ops,
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};
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/*
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* lock_module. Originally from lock_dlm
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*/
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static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf)
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{
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const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops;
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return sprintf(buf, "%s\n", ops->lm_proto_name);
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}
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static ssize_t block_show(struct gfs2_sbd *sdp, char *buf)
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{
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struct lm_lockstruct *ls = &sdp->sd_lockstruct;
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ssize_t ret;
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int val = 0;
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if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags))
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val = 1;
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ret = sprintf(buf, "%d\n", val);
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return ret;
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}
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static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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struct lm_lockstruct *ls = &sdp->sd_lockstruct;
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int ret, val;
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ret = kstrtoint(buf, 0, &val);
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if (ret)
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return ret;
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if (val == 1)
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set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
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else if (val == 0) {
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clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
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smp_mb__after_atomic();
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gfs2_glock_thaw(sdp);
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} else {
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return -EINVAL;
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}
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return len;
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}
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static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf)
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{
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int val = completion_done(&sdp->sd_wdack) ? 1 : 0;
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return sprintf(buf, "%d\n", val);
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}
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static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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int ret, val;
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ret = kstrtoint(buf, 0, &val);
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if (ret)
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return ret;
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if ((val == 1) &&
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!strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
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complete(&sdp->sd_wdack);
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else
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return -EINVAL;
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return len;
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}
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static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf)
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{
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struct lm_lockstruct *ls = &sdp->sd_lockstruct;
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return sprintf(buf, "%d\n", ls->ls_first);
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}
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static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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unsigned first;
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int rv;
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rv = sscanf(buf, "%u", &first);
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if (rv != 1 || first > 1)
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return -EINVAL;
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rv = wait_for_completion_killable(&sdp->sd_locking_init);
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if (rv)
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return rv;
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spin_lock(&sdp->sd_jindex_spin);
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rv = -EBUSY;
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if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)
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goto out;
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rv = -EINVAL;
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if (sdp->sd_args.ar_spectator)
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goto out;
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if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
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goto out;
|
|
sdp->sd_lockstruct.ls_first = first;
|
|
rv = 0;
|
|
out:
|
|
spin_unlock(&sdp->sd_jindex_spin);
|
|
return rv ? rv : len;
|
|
}
|
|
|
|
static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf)
|
|
{
|
|
struct lm_lockstruct *ls = &sdp->sd_lockstruct;
|
|
return sprintf(buf, "%d\n", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags));
|
|
}
|
|
|
|
int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid)
|
|
{
|
|
struct gfs2_jdesc *jd;
|
|
int rv;
|
|
|
|
/* Wait for our primary journal to be initialized */
|
|
wait_for_completion(&sdp->sd_journal_ready);
|
|
|
|
spin_lock(&sdp->sd_jindex_spin);
|
|
rv = -EBUSY;
|
|
/**
|
|
* If we're a spectator, we use journal0, but it's not really ours.
|
|
* So we need to wait for its recovery too. If we skip it we'd never
|
|
* queue work to the recovery workqueue, and so its completion would
|
|
* never clear the DFL_BLOCK_LOCKS flag, so all our locks would
|
|
* permanently stop working.
|
|
*/
|
|
if (!sdp->sd_jdesc)
|
|
goto out;
|
|
if (sdp->sd_jdesc->jd_jid == jid && !sdp->sd_args.ar_spectator)
|
|
goto out;
|
|
rv = -ENOENT;
|
|
list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
|
|
if (jd->jd_jid != jid && !sdp->sd_args.ar_spectator)
|
|
continue;
|
|
rv = gfs2_recover_journal(jd, false);
|
|
break;
|
|
}
|
|
out:
|
|
spin_unlock(&sdp->sd_jindex_spin);
|
|
return rv;
|
|
}
|
|
|
|
static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
|
|
{
|
|
unsigned jid;
|
|
int rv;
|
|
|
|
rv = sscanf(buf, "%u", &jid);
|
|
if (rv != 1)
|
|
return -EINVAL;
|
|
|
|
if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) {
|
|
rv = -ESHUTDOWN;
|
|
goto out;
|
|
}
|
|
|
|
rv = gfs2_recover_set(sdp, jid);
|
|
out:
|
|
return rv ? rv : len;
|
|
}
|
|
|
|
static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf)
|
|
{
|
|
struct lm_lockstruct *ls = &sdp->sd_lockstruct;
|
|
return sprintf(buf, "%d\n", ls->ls_recover_jid_done);
|
|
}
|
|
|
|
static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf)
|
|
{
|
|
struct lm_lockstruct *ls = &sdp->sd_lockstruct;
|
|
return sprintf(buf, "%d\n", ls->ls_recover_jid_status);
|
|
}
|
|
|
|
static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf)
|
|
{
|
|
return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid);
|
|
}
|
|
|
|
static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
|
|
{
|
|
int jid;
|
|
int rv;
|
|
|
|
rv = sscanf(buf, "%d", &jid);
|
|
if (rv != 1)
|
|
return -EINVAL;
|
|
rv = wait_for_completion_killable(&sdp->sd_locking_init);
|
|
if (rv)
|
|
return rv;
|
|
spin_lock(&sdp->sd_jindex_spin);
|
|
rv = -EINVAL;
|
|
if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
|
|
goto out;
|
|
rv = -EBUSY;
|
|
if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)
|
|
goto out;
|
|
rv = 0;
|
|
if (sdp->sd_args.ar_spectator && jid > 0)
|
|
rv = jid = -EINVAL;
|
|
sdp->sd_lockstruct.ls_jid = jid;
|
|
clear_bit(SDF_NOJOURNALID, &sdp->sd_flags);
|
|
smp_mb__after_atomic();
|
|
wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID);
|
|
out:
|
|
spin_unlock(&sdp->sd_jindex_spin);
|
|
return rv ? rv : len;
|
|
}
|
|
|
|
#define GDLM_ATTR(_name,_mode,_show,_store) \
|
|
static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store)
|
|
|
|
GDLM_ATTR(proto_name, 0444, proto_name_show, NULL);
|
|
GDLM_ATTR(block, 0644, block_show, block_store);
|
|
GDLM_ATTR(withdraw, 0644, wdack_show, wdack_store);
|
|
GDLM_ATTR(jid, 0644, jid_show, jid_store);
|
|
GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store);
|
|
GDLM_ATTR(first_done, 0444, first_done_show, NULL);
|
|
GDLM_ATTR(recover, 0600, NULL, recover_store);
|
|
GDLM_ATTR(recover_done, 0444, recover_done_show, NULL);
|
|
GDLM_ATTR(recover_status, 0444, recover_status_show, NULL);
|
|
|
|
static struct attribute *lock_module_attrs[] = {
|
|
&gdlm_attr_proto_name.attr,
|
|
&gdlm_attr_block.attr,
|
|
&gdlm_attr_withdraw.attr,
|
|
&gdlm_attr_jid.attr,
|
|
&gdlm_attr_first.attr,
|
|
&gdlm_attr_first_done.attr,
|
|
&gdlm_attr_recover.attr,
|
|
&gdlm_attr_recover_done.attr,
|
|
&gdlm_attr_recover_status.attr,
|
|
NULL,
|
|
};
|
|
|
|
/*
|
|
* get and set struct gfs2_tune fields
|
|
*/
|
|
|
|
static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf)
|
|
{
|
|
return snprintf(buf, PAGE_SIZE, "%u %u\n",
|
|
sdp->sd_tune.gt_quota_scale_num,
|
|
sdp->sd_tune.gt_quota_scale_den);
|
|
}
|
|
|
|
static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf,
|
|
size_t len)
|
|
{
|
|
struct gfs2_tune *gt = &sdp->sd_tune;
|
|
unsigned int x, y;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (sscanf(buf, "%u %u", &x, &y) != 2 || !y)
|
|
return -EINVAL;
|
|
|
|
spin_lock(>->gt_spin);
|
|
gt->gt_quota_scale_num = x;
|
|
gt->gt_quota_scale_den = y;
|
|
spin_unlock(>->gt_spin);
|
|
return len;
|
|
}
|
|
|
|
static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field,
|
|
int check_zero, const char *buf, size_t len)
|
|
{
|
|
struct gfs2_tune *gt = &sdp->sd_tune;
|
|
unsigned int x;
|
|
int error;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
error = kstrtouint(buf, 0, &x);
|
|
if (error)
|
|
return error;
|
|
|
|
if (check_zero && !x)
|
|
return -EINVAL;
|
|
|
|
spin_lock(>->gt_spin);
|
|
*field = x;
|
|
spin_unlock(>->gt_spin);
|
|
return len;
|
|
}
|
|
|
|
#define TUNE_ATTR_3(name, show, store) \
|
|
static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store)
|
|
|
|
#define TUNE_ATTR_2(name, store) \
|
|
static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \
|
|
{ \
|
|
return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \
|
|
} \
|
|
TUNE_ATTR_3(name, name##_show, store)
|
|
|
|
#define TUNE_ATTR(name, check_zero) \
|
|
static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
|
|
{ \
|
|
return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \
|
|
} \
|
|
TUNE_ATTR_2(name, name##_store)
|
|
|
|
TUNE_ATTR(quota_warn_period, 0);
|
|
TUNE_ATTR(quota_quantum, 0);
|
|
TUNE_ATTR(max_readahead, 0);
|
|
TUNE_ATTR(complain_secs, 0);
|
|
TUNE_ATTR(statfs_slow, 0);
|
|
TUNE_ATTR(new_files_jdata, 0);
|
|
TUNE_ATTR(statfs_quantum, 1);
|
|
TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
|
|
|
|
static struct attribute *tune_attrs[] = {
|
|
&tune_attr_quota_warn_period.attr,
|
|
&tune_attr_quota_quantum.attr,
|
|
&tune_attr_max_readahead.attr,
|
|
&tune_attr_complain_secs.attr,
|
|
&tune_attr_statfs_slow.attr,
|
|
&tune_attr_statfs_quantum.attr,
|
|
&tune_attr_quota_scale.attr,
|
|
&tune_attr_new_files_jdata.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group tune_group = {
|
|
.name = "tune",
|
|
.attrs = tune_attrs,
|
|
};
|
|
|
|
static const struct attribute_group lock_module_group = {
|
|
.name = "lock_module",
|
|
.attrs = lock_module_attrs,
|
|
};
|
|
|
|
int gfs2_sys_fs_add(struct gfs2_sbd *sdp)
|
|
{
|
|
struct super_block *sb = sdp->sd_vfs;
|
|
int error;
|
|
char ro[20];
|
|
char spectator[20];
|
|
char *envp[] = { ro, spectator, NULL };
|
|
|
|
sprintf(ro, "RDONLY=%d", sb_rdonly(sb));
|
|
sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0);
|
|
|
|
init_completion(&sdp->sd_kobj_unregister);
|
|
sdp->sd_kobj.kset = gfs2_kset;
|
|
error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL,
|
|
"%s", sdp->sd_table_name);
|
|
if (error)
|
|
goto fail_reg;
|
|
|
|
error = sysfs_create_group(&sdp->sd_kobj, &tune_group);
|
|
if (error)
|
|
goto fail_reg;
|
|
|
|
error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group);
|
|
if (error)
|
|
goto fail_tune;
|
|
|
|
error = sysfs_create_link(&sdp->sd_kobj,
|
|
&disk_to_dev(sb->s_bdev->bd_disk)->kobj,
|
|
"device");
|
|
if (error)
|
|
goto fail_lock_module;
|
|
|
|
kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp);
|
|
return 0;
|
|
|
|
fail_lock_module:
|
|
sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);
|
|
fail_tune:
|
|
sysfs_remove_group(&sdp->sd_kobj, &tune_group);
|
|
fail_reg:
|
|
fs_err(sdp, "error %d adding sysfs files\n", error);
|
|
kobject_put(&sdp->sd_kobj);
|
|
wait_for_completion(&sdp->sd_kobj_unregister);
|
|
sb->s_fs_info = NULL;
|
|
return error;
|
|
}
|
|
|
|
void gfs2_sys_fs_del(struct gfs2_sbd *sdp)
|
|
{
|
|
sysfs_remove_link(&sdp->sd_kobj, "device");
|
|
sysfs_remove_group(&sdp->sd_kobj, &tune_group);
|
|
sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);
|
|
kobject_put(&sdp->sd_kobj);
|
|
wait_for_completion(&sdp->sd_kobj_unregister);
|
|
}
|
|
|
|
static int gfs2_uevent(struct kobject *kobj, struct kobj_uevent_env *env)
|
|
{
|
|
struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
|
|
struct super_block *s = sdp->sd_vfs;
|
|
|
|
add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name);
|
|
add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name);
|
|
if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags))
|
|
add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid);
|
|
if (!uuid_is_null(&s->s_uuid))
|
|
add_uevent_var(env, "UUID=%pUB", &s->s_uuid);
|
|
return 0;
|
|
}
|
|
|
|
static const struct kset_uevent_ops gfs2_uevent_ops = {
|
|
.uevent = gfs2_uevent,
|
|
};
|
|
|
|
int gfs2_sys_init(void)
|
|
{
|
|
gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj);
|
|
if (!gfs2_kset)
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
void gfs2_sys_uninit(void)
|
|
{
|
|
kset_unregister(gfs2_kset);
|
|
}
|
|
|