| /****************************************************************************** |
| ******************************************************************************* |
| ** |
| ** Copyright (C) 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 v.2. |
| ** |
| ******************************************************************************* |
| ******************************************************************************/ |
| |
| #include <linux/ctype.h> |
| #include <linux/stat.h> |
| |
| #include "lock_dlm.h" |
| |
| static ssize_t gdlm_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 gdlm_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 gdlm_mounted_show(struct gdlm_ls *ls, char *buf) |
| { |
| ssize_t ret; |
| int val = -2; |
| |
| if (test_bit(DFL_TERMINATE, &ls->flags)) |
| val = -1; |
| else if (test_bit(DFL_LEAVE_DONE, &ls->flags)) |
| val = 0; |
| else if (test_bit(DFL_JOIN_DONE, &ls->flags)) |
| val = 1; |
| ret = sprintf(buf, "%d\n", val); |
| return ret; |
| } |
| |
| static ssize_t gdlm_mounted_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_JOIN_DONE, &ls->flags); |
| else if (val == 0) |
| set_bit(DFL_LEAVE_DONE, &ls->flags); |
| else if (val == -1) { |
| set_bit(DFL_TERMINATE, &ls->flags); |
| set_bit(DFL_JOIN_DONE, &ls->flags); |
| set_bit(DFL_LEAVE_DONE, &ls->flags); |
| } else |
| ret = -EINVAL; |
| wake_up(&ls->wait_control); |
| return ret; |
| } |
| |
| static ssize_t gdlm_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 gdlm_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 gdlm_jid_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%u\n", ls->jid); |
| } |
| |
| static ssize_t gdlm_jid_store(struct gdlm_ls *ls, const char *buf, size_t len) |
| { |
| ls->jid = simple_strtol(buf, NULL, 0); |
| return len; |
| } |
| |
| static ssize_t gdlm_first_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%u\n", ls->first); |
| } |
| |
| static ssize_t gdlm_first_store(struct gdlm_ls *ls, const char *buf, size_t len) |
| { |
| ls->first = simple_strtol(buf, NULL, 0); |
| return len; |
| } |
| |
| static ssize_t gdlm_first_done_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%d\n", ls->first_done); |
| } |
| |
| static ssize_t gdlm_recover_show(struct gdlm_ls *ls, char *buf) |
| { |
| return sprintf(buf, "%u\n", ls->recover_jid); |
| } |
| |
| static ssize_t gdlm_recover_store(struct gdlm_ls *ls, const char *buf, size_t len) |
| { |
| ls->recover_jid = simple_strtol(buf, NULL, 0); |
| ls->fscb(ls->fsdata, LM_CB_NEED_RECOVERY, &ls->recover_jid); |
| return len; |
| } |
| |
| static ssize_t gdlm_recover_done_show(struct gdlm_ls *ls, char *buf) |
| { |
| ssize_t ret; |
| ret = sprintf(buf, "%d\n", ls->recover_done); |
| return ret; |
| } |
| |
| static ssize_t gdlm_cluster_show(struct gdlm_ls *ls, char *buf) |
| { |
| ssize_t ret; |
| ret = sprintf(buf, "%s\n", ls->clustername); |
| return ret; |
| } |
| |
| static ssize_t gdlm_options_show(struct gdlm_ls *ls, char *buf) |
| { |
| ssize_t ret = 0; |
| |
| if (ls->fsflags & LM_MFLAG_SPECTATOR) |
| ret += sprintf(buf, "spectator "); |
| |
| return ret; |
| } |
| |
| struct gdlm_attr { |
| struct attribute attr; |
| ssize_t (*show)(struct gdlm_ls *, char *); |
| ssize_t (*store)(struct gdlm_ls *, const char *, size_t); |
| }; |
| |
| static struct gdlm_attr gdlm_attr_block = { |
| .attr = {.name = "block", .mode = S_IRUGO | S_IWUSR}, |
| .show = gdlm_block_show, |
| .store = gdlm_block_store |
| }; |
| |
| static struct gdlm_attr gdlm_attr_mounted = { |
| .attr = {.name = "mounted", .mode = S_IRUGO | S_IWUSR}, |
| .show = gdlm_mounted_show, |
| .store = gdlm_mounted_store |
| }; |
| |
| static struct gdlm_attr gdlm_attr_withdraw = { |
| .attr = {.name = "withdraw", .mode = S_IRUGO | S_IWUSR}, |
| .show = gdlm_withdraw_show, |
| .store = gdlm_withdraw_store |
| }; |
| |
| static struct gdlm_attr gdlm_attr_jid = { |
| .attr = {.name = "jid", .mode = S_IRUGO | S_IWUSR}, |
| .show = gdlm_jid_show, |
| .store = gdlm_jid_store |
| }; |
| |
| static struct gdlm_attr gdlm_attr_first = { |
| .attr = {.name = "first", .mode = S_IRUGO | S_IWUSR}, |
| .show = gdlm_first_show, |
| .store = gdlm_first_store |
| }; |
| |
| static struct gdlm_attr gdlm_attr_first_done = { |
| .attr = {.name = "first_done", .mode = S_IRUGO}, |
| .show = gdlm_first_done_show, |
| }; |
| |
| static struct gdlm_attr gdlm_attr_recover = { |
| .attr = {.name = "recover", .mode = S_IRUGO | S_IWUSR}, |
| .show = gdlm_recover_show, |
| .store = gdlm_recover_store |
| }; |
| |
| static struct gdlm_attr gdlm_attr_recover_done = { |
| .attr = {.name = "recover_done", .mode = S_IRUGO | S_IWUSR}, |
| .show = gdlm_recover_done_show, |
| }; |
| |
| static struct gdlm_attr gdlm_attr_cluster = { |
| .attr = {.name = "cluster", .mode = S_IRUGO | S_IWUSR}, |
| .show = gdlm_cluster_show, |
| }; |
| |
| static struct gdlm_attr gdlm_attr_options = { |
| .attr = {.name = "options", .mode = S_IRUGO | S_IWUSR}, |
| .show = gdlm_options_show, |
| }; |
| |
| static struct attribute *gdlm_attrs[] = { |
| &gdlm_attr_block.attr, |
| &gdlm_attr_mounted.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_cluster.attr, |
| &gdlm_attr_options.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 = { |
| .subsys = &kernel_subsys, |
| .kobj = {.name = "lock_dlm",}, |
| .ktype = &gdlm_ktype, |
| }; |
| |
| int gdlm_kobject_setup(struct gdlm_ls *ls) |
| { |
| int error; |
| |
| error = kobject_set_name(&ls->kobj, "%s", ls->fsname); |
| if (error) |
| return error; |
| |
| ls->kobj.kset = &gdlm_kset; |
| ls->kobj.ktype = &gdlm_ktype; |
| |
| error = kobject_register(&ls->kobj); |
| |
| return 0; |
| } |
| |
| void gdlm_kobject_release(struct gdlm_ls *ls) |
| { |
| kobject_unregister(&ls->kobj); |
| } |
| |
| int gdlm_sysfs_init(void) |
| { |
| int error; |
| |
| 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); |
| } |
| |