mirror of
https://github.com/koverstreet/bcachefs-tools.git
synced 2025-02-02 00:00:03 +03:00
106 lines
2.0 KiB
C
106 lines
2.0 KiB
C
/*
|
|
* Code for sending uevent notifications to user-space.
|
|
*
|
|
* Copyright 2015 Datera, Inc.
|
|
*/
|
|
|
|
#include "bcache.h"
|
|
#include "notify.h"
|
|
|
|
#include <linux/kobject.h>
|
|
|
|
#define notify_var(c, format, ...) \
|
|
({ \
|
|
int ret; \
|
|
lockdep_assert_held(&(c)->uevent_lock); \
|
|
ret = add_uevent_var(&(c)->uevent_env, format, ##__VA_ARGS__); \
|
|
WARN_ON_ONCE(ret); \
|
|
})
|
|
|
|
static void notify_get(struct bch_fs *c)
|
|
{
|
|
struct kobj_uevent_env *env = &c->uevent_env;
|
|
|
|
mutex_lock(&c->uevent_lock);
|
|
env->envp_idx = 0;
|
|
env->buflen = 0;
|
|
|
|
notify_var(c, "SET_UUID=%pU", c->sb.user_uuid.b);
|
|
}
|
|
|
|
static void notify_get_cache(struct bch_dev *ca)
|
|
{
|
|
struct bch_fs *c = ca->fs;
|
|
|
|
notify_get(c);
|
|
notify_var(c, "UUID=%pU", ca->uuid.b);
|
|
notify_var(c, "BLOCKDEV=%s", ca->name);
|
|
}
|
|
|
|
static void notify_put(struct bch_fs *c)
|
|
{
|
|
struct kobj_uevent_env *env = &c->uevent_env;
|
|
|
|
env->envp[env->envp_idx] = NULL;
|
|
kobject_uevent_env(&c->kobj, KOBJ_CHANGE, env->envp);
|
|
mutex_unlock(&c->uevent_lock);
|
|
}
|
|
|
|
void bch_notify_fs_read_write(struct bch_fs *c)
|
|
{
|
|
notify_get(c);
|
|
notify_var(c, "STATE=active");
|
|
notify_put(c);
|
|
}
|
|
|
|
void bch_notify_fs_read_only(struct bch_fs *c)
|
|
{
|
|
notify_get(c);
|
|
notify_var(c, "STATE=readonly");
|
|
notify_put(c);
|
|
}
|
|
|
|
void bch_notify_fs_stopped(struct bch_fs *c)
|
|
{
|
|
notify_get(c);
|
|
notify_var(c, "STATE=stopped");
|
|
notify_put(c);
|
|
}
|
|
|
|
void bch_notify_dev_read_write(struct bch_dev *ca)
|
|
{
|
|
struct bch_fs *c = ca->fs;
|
|
|
|
notify_get_cache(ca);
|
|
notify_var(c, "STATE=active");
|
|
notify_put(c);
|
|
}
|
|
|
|
void bch_notify_dev_read_only(struct bch_dev *ca)
|
|
{
|
|
struct bch_fs *c = ca->fs;
|
|
|
|
notify_get_cache(ca);
|
|
notify_var(c, "STATE=readonly");
|
|
notify_put(c);
|
|
}
|
|
|
|
void bch_notify_dev_added(struct bch_dev *ca)
|
|
{
|
|
struct bch_fs *c = ca->fs;
|
|
|
|
notify_get_cache(ca);
|
|
notify_var(c, "STATE=removing");
|
|
notify_put(c);
|
|
}
|
|
|
|
void bch_notify_dev_error(struct bch_dev *ca, bool fatal)
|
|
{
|
|
struct bch_fs *c = ca->fs;
|
|
|
|
notify_get_cache(ca);
|
|
notify_var(c, "STATE=error");
|
|
notify_var(c, "FATAL=%d", fatal);
|
|
notify_put(c);
|
|
}
|