/*
* Set only flag to suggest that device is suspended. This call is
* not supported in NetBSD.
*
*/
int
dm_dev_suspend_ioctl(prop_dictionary_t dm_dict)
{
dm_dev_t *dmv;
const char *name, *uuid;
uint32_t flags, minor;
name = NULL;
uuid = NULL;
flags = 0;
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_NAME, &name);
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_UUID, &uuid);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_FLAGS, &flags);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_MINOR, &minor);
if ((dmv = dm_dev_lookup(name, uuid, minor)) == NULL) {
DM_REMOVE_FLAG(flags, DM_EXISTS_FLAG);
return ENOENT;
}
atomic_set_int(&dmv->flags, DM_SUSPEND_FLAG);
dm_dbg_print_flags(dmv->flags);
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_OPEN, dmv->table_head.io_cnt);
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_FLAGS, dmv->flags);
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_MINOR, dmv->minor);
dm_dev_unbusy(dmv);
/* Add flags to dictionary flag after dmv -> dict copy */
DM_ADD_FLAG(flags, DM_EXISTS_FLAG);
return 0;
}
/*
* Remove inactive table from device. Routines which work's with inactive tables
* doesn't need to synchronise with dmstrategy. They can synchronise themselves with mutex?.
*
*/
int
dm_table_clear_ioctl(prop_dictionary_t dm_dict)
{
dm_dev_t *dmv;
const char *name, *uuid;
uint32_t flags, minor;
dmv = NULL;
name = NULL;
uuid = NULL;
flags = 0;
minor = 0;
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_NAME, &name);
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_UUID, &uuid);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_FLAGS, &flags);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_MINOR, &minor);
aprint_debug("Clearing inactive table from device: %s--%s\n",
name, uuid);
if ((dmv = dm_dev_lookup(name, uuid, minor)) == NULL) {
DM_REMOVE_FLAG(flags, DM_EXISTS_FLAG);
return ENOENT;
}
/* Select unused table */
dm_table_destroy(&dmv->table_head, DM_TABLE_INACTIVE);
atomic_clear_int(&dmv->flags, DM_INACTIVE_PRESENT_FLAG);
dm_dev_unbusy(dmv);
return 0;
}
/*
* Get list of physical devices for active table.
* Get dev_t from pdev vnode and insert it into cmd_array.
*
* XXX. This function is called from lvm2tools to get information
* about physical devices, too e.g. during vgcreate.
*/
int
dm_table_deps_ioctl(prop_dictionary_t dm_dict)
{
dm_dev_t *dmv;
dm_table_t *tbl;
dm_table_entry_t *table_en;
prop_array_t cmd_array;
const char *name, *uuid;
uint32_t flags, minor;
int table_type;
name = NULL;
uuid = NULL;
dmv = NULL;
flags = 0;
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_NAME, &name);
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_UUID, &uuid);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_FLAGS, &flags);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_MINOR, &minor);
/* create array for dev_t's */
cmd_array = prop_array_create();
if ((dmv = dm_dev_lookup(name, uuid, minor)) == NULL) {
DM_REMOVE_FLAG(flags, DM_EXISTS_FLAG);
return ENOENT;
}
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_MINOR, dmv->minor);
prop_dictionary_set_cstring(dm_dict, DM_IOCTL_NAME, dmv->name);
prop_dictionary_set_cstring(dm_dict, DM_IOCTL_UUID, dmv->uuid);
aprint_debug("Getting table deps for device: %s\n", dmv->name);
/*
* if DM_QUERY_INACTIVE_TABLE_FLAG is passed we need to query
* INACTIVE TABLE
*/
if (flags & DM_QUERY_INACTIVE_TABLE_FLAG)
table_type = DM_TABLE_INACTIVE;
else
table_type = DM_TABLE_ACTIVE;
tbl = dm_table_get_entry(&dmv->table_head, table_type);
SLIST_FOREACH(table_en, tbl, next)
table_en->target->deps(table_en, cmd_array);
dm_table_release(&dmv->table_head, table_type);
dm_dev_unbusy(dmv);
prop_dictionary_set(dm_dict, DM_IOCTL_CMD_DATA, cmd_array);
prop_object_release(cmd_array);
return 0;
}
/*
* Return actual state of device to libdevmapper.
*/
int
dm_dev_status_ioctl(prop_dictionary_t dm_dict)
{
dm_dev_t *dmv;
const char *name, *uuid;
uint32_t flags, j, minor;
name = NULL;
uuid = NULL;
flags = 0;
j = 0;
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_NAME, &name);
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_UUID, &uuid);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_FLAGS, &flags);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_MINOR, &minor);
if ((dmv = dm_dev_lookup(name, uuid, minor)) == NULL) {
DM_REMOVE_FLAG(flags, DM_EXISTS_FLAG);
return ENOENT;
}
dm_dbg_print_flags(dmv->flags);
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_OPEN, dmv->table_head.io_cnt);
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_MINOR, dmv->minor);
prop_dictionary_set_cstring(dm_dict, DM_IOCTL_UUID, dmv->uuid);
if (dmv->flags & DM_SUSPEND_FLAG)
DM_ADD_FLAG(flags, DM_SUSPEND_FLAG);
/*
* Add status flags for tables I have to check both active and
* inactive tables.
*/
if ((j = dm_table_get_target_count(&dmv->table_head, DM_TABLE_ACTIVE))) {
DM_ADD_FLAG(flags, DM_ACTIVE_PRESENT_FLAG);
} else
DM_REMOVE_FLAG(flags, DM_ACTIVE_PRESENT_FLAG);
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_TARGET_COUNT, j);
if (dm_table_get_target_count(&dmv->table_head, DM_TABLE_INACTIVE))
DM_ADD_FLAG(flags, DM_INACTIVE_PRESENT_FLAG);
else
DM_REMOVE_FLAG(flags, DM_INACTIVE_PRESENT_FLAG);
dm_dev_unbusy(dmv);
return 0;
}
/*
* Simulate Linux behaviour better and switch tables here and not in
* dm_table_load_ioctl.
*/
int
dm_dev_resume_ioctl(prop_dictionary_t dm_dict)
{
dm_dev_t *dmv;
const char *name, *uuid;
uint32_t flags, minor;
name = NULL;
uuid = NULL;
flags = 0;
/*
* char *xml; xml = prop_dictionary_externalize(dm_dict);
* printf("%s\n",xml);
*/
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_NAME, &name);
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_UUID, &uuid);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_FLAGS, &flags);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_MINOR, &minor);
/* Remove device from global device list */
if ((dmv = dm_dev_lookup(name, uuid, minor)) == NULL) {
DM_REMOVE_FLAG(flags, DM_EXISTS_FLAG);
return ENOENT;
}
atomic_clear_int(&dmv->flags, (DM_SUSPEND_FLAG | DM_INACTIVE_PRESENT_FLAG));
atomic_set_int(&dmv->flags, DM_ACTIVE_PRESENT_FLAG);
dm_table_switch_tables(&dmv->table_head);
DM_ADD_FLAG(flags, DM_EXISTS_FLAG);
dmsetdiskinfo(dmv->diskp, &dmv->table_head);
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_OPEN, dmv->table_head.io_cnt);
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_FLAGS, flags);
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_MINOR, dmv->minor);
dm_dev_unbusy(dmv);
/* Destroy inactive table after resume. */
dm_table_destroy(&dmv->table_head, DM_TABLE_INACTIVE);
return 0;
}
static int
dmclose(struct dev_close_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
dm_dev_t *dmv;
/* Shortcut for the control device */
if (minor(dev) == 0)
return 0;
if ((dmv = dm_dev_lookup(NULL, NULL, minor(dev))) == NULL)
return ENXIO;
dmv->is_open = 0;
dm_dev_unbusy(dmv);
aprint_debug("dm close routine called %" PRIu32 "\n",
minor(ap->a_head.a_dev));
return 0;
}
/*
* Remove device from global list I have to remove active
* and inactive tables first.
*/
int
dm_dev_remove_ioctl(prop_dictionary_t dm_dict)
{
dm_dev_t *dmv;
const char *name, *uuid;
uint32_t flags, minor;
device_t devt;
flags = 0;
name = NULL;
uuid = NULL;
/* Get needed values from dictionary. */
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_NAME, &name);
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_UUID, &uuid);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_FLAGS, &flags);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_MINOR, &minor);
dm_dbg_print_flags(flags);
/*
* This seems as hack to me, probably use routine dm_dev_get_devt to
* atomicaly get devt from device.
*/
if ((dmv = dm_dev_lookup(name, uuid, minor)) == NULL) {
DM_REMOVE_FLAG(flags, DM_EXISTS_FLAG);
return ENOENT;
}
devt = dmv->devt;
dm_dev_unbusy(dmv);
/*
* This will call dm_detach routine which will actually removes
* device.
*/
return config_detach(devt, DETACH_QUIET);
}
/*
* Remove device
*/
int
dm_dev_remove_ioctl(prop_dictionary_t dm_dict)
{
dm_dev_t *dmv;
const char *name, *uuid;
uint32_t flags, minor, is_open;
flags = 0;
name = NULL;
uuid = NULL;
/* Get needed values from dictionary. */
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_NAME, &name);
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_UUID, &uuid);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_FLAGS, &flags);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_MINOR, &minor);
dm_dbg_print_flags(flags);
if ((dmv = dm_dev_lookup(name, uuid, minor)) == NULL) {
DM_REMOVE_FLAG(flags, DM_EXISTS_FLAG);
return ENOENT;
}
is_open = dmv->is_open;
dm_dev_unbusy(dmv);
if (is_open)
return EBUSY;
/*
* This will call dm_detach routine which will actually remove
* device.
*/
return dm_dev_remove(dmv);
}
/*
* Create in-kernel entry for device. Device attributes such as name, uuid are
* taken from proplib dictionary.
*
*/
int
dm_dev_create_ioctl(prop_dictionary_t dm_dict)
{
dm_dev_t *dmv;
const char *name, *uuid;
int r, flags;
r = 0;
flags = 0;
name = NULL;
uuid = NULL;
/* Get needed values from dictionary. */
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_NAME, &name);
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_UUID, &uuid);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_FLAGS, &flags);
dm_dbg_print_flags(flags);
/* Lookup name and uuid if device already exist quit. */
if ((dmv = dm_dev_lookup(name, uuid, -1)) != NULL) {
DM_ADD_FLAG(flags, DM_EXISTS_FLAG); /* Device already exists */
dm_dev_unbusy(dmv);
return EEXIST;
}
r = dm_dev_create(&dmv, name, uuid, flags);
if (r == 0) {
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_MINOR, dmv->minor);
DM_ADD_FLAG(flags, DM_EXISTS_FLAG);
DM_REMOVE_FLAG(flags, DM_INACTIVE_PRESENT_FLAG);
}
return r;
}
/*
* Load new table/tables to device.
* Call apropriate target init routine open all physical pdev's and
* link them to device. For other targets mirror, strip, snapshot
* etc. also add dependency devices to upcalls list.
*
* Load table to inactive slot table are switched in dm_device_resume_ioctl.
* This simulates Linux behaviour better there should not be any difference.
*
*/
int
dm_table_load_ioctl(prop_dictionary_t dm_dict)
{
dm_dev_t *dmv;
dm_table_entry_t *table_en, *last_table;
dm_table_t *tbl;
dm_target_t *target;
prop_object_iterator_t iter;
prop_array_t cmd_array;
prop_dictionary_t target_dict;
const char *name, *uuid, *type;
uint32_t flags, ret, minor;
char *str;
ret = 0;
flags = 0;
name = NULL;
uuid = NULL;
dmv = NULL;
last_table = NULL;
str = NULL;
/*
* char *xml; xml = prop_dictionary_externalize(dm_dict);
* printf("%s\n",xml);
*/
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_NAME, &name);
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_UUID, &uuid);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_FLAGS, &flags);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_MINOR, &minor);
cmd_array = prop_dictionary_get(dm_dict, DM_IOCTL_CMD_DATA);
iter = prop_array_iterator(cmd_array);
dm_dbg_print_flags(flags);
if ((dmv = dm_dev_lookup(name, uuid, minor)) == NULL) {
DM_REMOVE_FLAG(flags, DM_EXISTS_FLAG);
return ENOENT;
}
aprint_debug("Loading table to device: %s--%d\n", name,
dmv->table_head.cur_active_table);
/*
* I have to check if this table slot is not used by another table list.
* if it is used I should free them.
*/
if (dmv->flags & DM_INACTIVE_PRESENT_FLAG)
dm_table_destroy(&dmv->table_head, DM_TABLE_INACTIVE);
dm_dbg_print_flags(dmv->flags);
tbl = dm_table_get_entry(&dmv->table_head, DM_TABLE_INACTIVE);
aprint_debug("dmv->name = %s\n", dmv->name);
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_MINOR, dmv->minor);
while ((target_dict = prop_object_iterator_next(iter)) != NULL) {
prop_dictionary_get_cstring_nocopy(target_dict,
DM_TABLE_TYPE, &type);
/*
* If we want to deny table with 2 or more different
* target we should do it here
*/
if (((target = dm_target_lookup(type)) == NULL) &&
((target = dm_target_autoload(type)) == NULL)) {
dm_table_release(&dmv->table_head, DM_TABLE_INACTIVE);
dm_dev_unbusy(dmv);
return ENOENT;
}
if ((table_en = kmalloc(sizeof(dm_table_entry_t),
M_DM, M_WAITOK)) == NULL) {
dm_table_release(&dmv->table_head, DM_TABLE_INACTIVE);
dm_dev_unbusy(dmv);
dm_target_unbusy(target);
return ENOMEM;
}
prop_dictionary_get_uint64(target_dict, DM_TABLE_START,
&table_en->start);
prop_dictionary_get_uint64(target_dict, DM_TABLE_LENGTH,
&table_en->length);
aprint_debug("dm_ioctl.c... table_en->start = %ju, "
"table_en->length = %ju\n",
(uintmax_t)table_en->start,
(uintmax_t)table_en->length);
table_en->target = target;
table_en->dm_dev = dmv;
table_en->target_config = NULL;
/*
* There is a parameter string after dm_target_spec
* structure which points to /dev/wd0a 284 part of
* table. String str points to this text. This can be
* null and therefore it should be checked before we try to
* use it.
*/
prop_dictionary_get_cstring(target_dict,
DM_TABLE_PARAMS, &str);
if (SLIST_EMPTY(tbl))
/* insert this table to head */
SLIST_INSERT_HEAD(tbl, table_en, next);
else
SLIST_INSERT_AFTER(last_table, table_en, next);
/*
* Params string is different for every target,
* therfore I have to pass it to target init
* routine and parse parameters there.
*/
aprint_debug("DM: str passed in is: %s", str);
if ((ret = target->init(dmv, &table_en->target_config,
str)) != 0) {
dm_table_release(&dmv->table_head, DM_TABLE_INACTIVE);
dm_table_destroy(&dmv->table_head, DM_TABLE_INACTIVE);
kfree(str, M_TEMP);
dm_dev_unbusy(dmv);
dm_target_unbusy(target);
return ret;
}
last_table = table_en;
kfree(str, M_TEMP);
}
prop_object_iterator_release(iter);
DM_ADD_FLAG(flags, DM_INACTIVE_PRESENT_FLAG);
atomic_set_int(&dmv->flags, DM_INACTIVE_PRESENT_FLAG);
dm_table_release(&dmv->table_head, DM_TABLE_INACTIVE);
dm_dev_unbusy(dmv);
#if 0
dmsetdiskinfo(dmv->diskp, &dmv->table_head);
#endif
return 0;
}
static int
disk_ioctl_switch(dev_t dev, u_long cmd, void *data)
{
dm_dev_t *dmv;
/* disk ioctls make sense only on block devices */
if (minor(dev) == 0)
return ENOTTY;
switch(cmd) {
case DIOCGWEDGEINFO:
{
struct dkwedge_info *dkw = (void *) data;
unsigned secsize;
if ((dmv = dm_dev_lookup(NULL, NULL, minor(dev))) == NULL)
return ENODEV;
aprint_debug("DIOCGWEDGEINFO ioctl called\n");
strlcpy(dkw->dkw_devname, dmv->name, 16);
strlcpy(dkw->dkw_wname, dmv->name, DM_NAME_LEN);
strlcpy(dkw->dkw_parent, dmv->name, 16);
dkw->dkw_offset = 0;
dm_table_disksize(&dmv->table_head, &dkw->dkw_size, &secsize);
strcpy(dkw->dkw_ptype, DKW_PTYPE_FFS);
dm_dev_unbusy(dmv);
break;
}
case DIOCGDISKINFO:
{
struct plistref *pref = (struct plistref *) data;
if ((dmv = dm_dev_lookup(NULL, NULL, minor(dev))) == NULL)
return ENODEV;
if (dmv->diskp->dk_info == NULL) {
dm_dev_unbusy(dmv);
return ENOTSUP;
} else
prop_dictionary_copyout_ioctl(pref, cmd,
dmv->diskp->dk_info);
dm_dev_unbusy(dmv);
break;
}
case DIOCCACHESYNC:
{
dm_table_entry_t *table_en;
dm_table_t *tbl;
if ((dmv = dm_dev_lookup(NULL, NULL, minor(dev))) == NULL)
return ENODEV;
/* Select active table */
tbl = dm_table_get_entry(&dmv->table_head, DM_TABLE_ACTIVE);
/*
* Call sync target routine for all table entries. Target sync
* routine basically call DIOCCACHESYNC on underlying devices.
*/
SLIST_FOREACH(table_en, tbl, next)
{
(void)table_en->target->sync(table_en);
}
dm_table_release(&dmv->table_head, DM_TABLE_ACTIVE);
dm_dev_unbusy(dmv);
break;
}
default:
aprint_debug("unknown disk_ioctl called\n");
return ENOTTY;
break; /* NOT REACHED */
}
/*
* Create in-kernel entry for device. Device attributes such as name, uuid are
* taken from proplib dictionary.
*
*/
int
dm_dev_create_ioctl(prop_dictionary_t dm_dict)
{
dm_dev_t *dmv;
const char *name, *uuid;
int r, flags;
device_t devt;
r = 0;
flags = 0;
name = NULL;
uuid = NULL;
/* Get needed values from dictionary. */
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_NAME, &name);
prop_dictionary_get_cstring_nocopy(dm_dict, DM_IOCTL_UUID, &uuid);
prop_dictionary_get_uint32(dm_dict, DM_IOCTL_FLAGS, &flags);
dm_dbg_print_flags(flags);
/* Lookup name and uuid if device already exist quit. */
if ((dmv = dm_dev_lookup(name, uuid, -1)) != NULL) {
DM_ADD_FLAG(flags, DM_EXISTS_FLAG); /* Device already exists */
dm_dev_unbusy(dmv);
return EEXIST;
}
if ((devt = config_attach_pseudo(&dm_cfdata)) == NULL) {
aprint_error("Unable to attach pseudo device dm/%s\n", name);
return (ENOMEM);
}
if ((dmv = dm_dev_alloc()) == NULL)
return ENOMEM;
if (uuid)
strncpy(dmv->uuid, uuid, DM_UUID_LEN);
else
dmv->uuid[0] = '\0';
if (name)
strlcpy(dmv->name, name, DM_NAME_LEN);
dmv->minor = (uint64_t)atomic_inc_32_nv(&sc_minor_num);
dmv->flags = 0; /* device flags are set when needed */
dmv->ref_cnt = 0;
dmv->event_nr = 0;
dmv->dev_type = 0;
dmv->devt = devt;
dm_table_head_init(&dmv->table_head);
mutex_init(&dmv->dev_mtx, MUTEX_DEFAULT, IPL_NONE);
mutex_init(&dmv->diskp_mtx, MUTEX_DEFAULT, IPL_NONE);
cv_init(&dmv->dev_cv, "dm_dev");
if (flags & DM_READONLY_FLAG)
dmv->flags |= DM_READONLY_FLAG;
prop_dictionary_set_uint32(dm_dict, DM_IOCTL_MINOR, dmv->minor);
disk_init(dmv->diskp, dmv->name, &dmdkdriver);
disk_attach(dmv->diskp);
dmv->diskp->dk_info = NULL;
if ((r = dm_dev_insert(dmv)) != 0)
dm_dev_free(dmv);
DM_ADD_FLAG(flags, DM_EXISTS_FLAG);
DM_REMOVE_FLAG(flags, DM_INACTIVE_PRESENT_FLAG);
/* Increment device counter After creating device */
atomic_inc_32(&dm_dev_counter);
return r;
}