| /* |
| * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
| * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. |
| * |
| * This copyrighted material is made available to anyone wishing to use, |
| * modify, copy, or redistribute it subject to the terms and conditions |
| * of the GNU General Public License version 2. |
| */ |
| |
| #include <linux/ctype.h> |
| #include <linux/stat.h> |
| |
| #include "lock_dlm.h" |
| |
| extern struct lm_lockops gdlm_ops; |
| |
| static ssize_t proto_name_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%s\n", gdlm_ops.lm_proto_name); |
| } |
| |
| static ssize_t block_show(struct gdlm_ls *ls, char *buf) |
| { |
| ssize_t ret; |
| int val = 0; |
| |
| if (test_bit(DFL_BLOCK_LOCKS, &ls->flags)) |
| val = 1; |
| ret = sprintf(buf, "%d\n", val); |
| return ret; |
| } |
| |
| static ssize_t block_store(struct gdlm_ls *ls, const char *buf, size_t len) |
| { |
| ssize_t ret = len; |
| int val; |
| |
| val = simple_strtol(buf, NULL, 0); |
| |
| if (val == 1) |
| set_bit(DFL_BLOCK_LOCKS, &ls->flags); |
| else if (val == 0) { |
| clear_bit(DFL_BLOCK_LOCKS, &ls->flags); |
| gdlm_submit_delayed(ls); |
| } else { |
| ret = -EINVAL; |
| } |
| return ret; |
| } |
| |
| static ssize_t withdraw_show(struct gdlm_ls *ls, char *buf) |
| { |
| ssize_t ret; |
| int val = 0; |
| |
| if (test_bit(DFL_WITHDRAW, &ls->flags)) |
| val = 1; |
| ret = sprintf(buf, "%d\n", val); |
| return ret; |
| } |
| |
| static ssize_t withdraw_store(struct gdlm_ls *ls, const char *buf, size_t len) |
| { |
| ssize_t ret = len; |
| int val; |
| |
| val = simple_strtol(buf, NULL, 0); |
| |
| if (val == 1) |
| set_bit(DFL_WITHDRAW, &ls->flags); |
| else |
| ret = -EINVAL; |
| wake_up(&ls->wait_control); |
| return ret; |
| } |
| |
| static ssize_t id_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%u\n", ls->id); |
| } |
| |
| static ssize_t jid_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%d\n", ls->jid); |
| } |
| |
| static ssize_t first_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%d\n", ls->first); |
| } |
| |
| static ssize_t first_done_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%d\n", ls->first_done); |
| } |
| |
| static ssize_t recover_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%d\n", ls->recover_jid); |
| } |
| |
| static ssize_t recover_store(struct gdlm_ls *ls, const char *buf, size_t len) |
| { |
| ls->recover_jid = simple_strtol(buf, NULL, 0); |
| ls->fscb(ls->sdp, LM_CB_NEED_RECOVERY, &ls->recover_jid); |
| return len; |
| } |
| |
| static ssize_t recover_done_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%d\n", ls->recover_jid_done); |
| } |
| |
| static ssize_t recover_status_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%d\n", ls->recover_jid_status); |
| } |
| |
| static ssize_t drop_count_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%d\n", ls->drop_locks_count); |
| } |
| |
| static ssize_t drop_count_store(struct gdlm_ls *ls, const char *buf, size_t len) |
| { |
| ls->drop_locks_count = simple_strtol(buf, NULL, 0); |
| return len; |
| } |
| |
| struct gdlm_attr { |
| struct attribute attr; |
| ssize_t (*show)(struct gdlm_ls *, char *); |
| ssize_t (*store)(struct gdlm_ls *, const char *, size_t); |
| }; |
| |
| #define GDLM_ATTR(_name,_mode,_show,_store) \ |
| static struct gdlm_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, withdraw_show, withdraw_store); |
| GDLM_ATTR(id, 0444, id_show, NULL); |
| GDLM_ATTR(jid, 0444, jid_show, NULL); |
| GDLM_ATTR(first, 0444, first_show, NULL); |
| GDLM_ATTR(first_done, 0444, first_done_show, NULL); |
| GDLM_ATTR(recover, 0644, recover_show, recover_store); |
| GDLM_ATTR(recover_done, 0444, recover_done_show, NULL); |
| GDLM_ATTR(recover_status, 0444, recover_status_show, NULL); |
| GDLM_ATTR(drop_count, 0644, drop_count_show, drop_count_store); |
| |
| static struct attribute *gdlm_attrs[] = { |
| &gdlm_attr_proto_name.attr, |
| &gdlm_attr_block.attr, |
| &gdlm_attr_withdraw.attr, |
| &gdlm_attr_id.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, |
| &gdlm_attr_drop_count.attr, |
| NULL, |
| }; |
| |
| static ssize_t gdlm_attr_show(struct kobject *kobj, struct attribute *attr, |
| char *buf) |
| { |
| struct gdlm_ls *ls = container_of(kobj, struct gdlm_ls, kobj); |
| struct gdlm_attr *a = container_of(attr, struct gdlm_attr, attr); |
| return a->show ? a->show(ls, buf) : 0; |
| } |
| |
| static ssize_t gdlm_attr_store(struct kobject *kobj, struct attribute *attr, |
| const char *buf, size_t len) |
| { |
| struct gdlm_ls *ls = container_of(kobj, struct gdlm_ls, kobj); |
| struct gdlm_attr *a = container_of(attr, struct gdlm_attr, attr); |
| return a->store ? a->store(ls, buf, len) : len; |
| } |
| |
| static struct sysfs_ops gdlm_attr_ops = { |
| .show = gdlm_attr_show, |
| .store = gdlm_attr_store, |
| }; |
| |
| static struct kobj_type gdlm_ktype = { |
| .default_attrs = gdlm_attrs, |
| .sysfs_ops = &gdlm_attr_ops, |
| }; |
| |
| static struct kset gdlm_kset; |
| |
| int gdlm_kobject_setup(struct gdlm_ls *ls, struct kobject *fskobj) |
| { |
| int error; |
| |
| error = kobject_set_name(&ls->kobj, "%s", "lock_module"); |
| if (error) { |
| log_error("can't set kobj name %d", error); |
| return error; |
| } |
| |
| ls->kobj.kset = &gdlm_kset; |
| ls->kobj.ktype = &gdlm_ktype; |
| ls->kobj.parent = fskobj; |
| |
| error = kobject_register(&ls->kobj); |
| if (error) |
| log_error("can't register kobj %d", error); |
| |
| return error; |
| } |
| |
| void gdlm_kobject_release(struct gdlm_ls *ls) |
| { |
| kobject_unregister(&ls->kobj); |
| } |
| |
| int gdlm_sysfs_init(void) |
| { |
| int error; |
| |
| kobject_set_name(&gdlm_kset.kobj, "lock_dlm"); |
| gdlm_kset.kobj.kset = &kernel_subsys; |
| error = kset_register(&gdlm_kset); |
| if (error) |
| printk("lock_dlm: cannot register kset %d\n", error); |
| |
| return error; |
| } |
| |
| void gdlm_sysfs_exit(void) |
| { |
| kset_unregister(&gdlm_kset); |
| } |
| |