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path: root/drivers/block/drbd/drbd_nl.c
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Diffstat (limited to 'drivers/block/drbd/drbd_nl.c')
-rw-r--r--drivers/block/drbd/drbd_nl.c485
1 files changed, 295 insertions, 190 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 526414bc2cab..1b35c45c92b7 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -34,7 +34,6 @@
#include "drbd_int.h"
#include "drbd_protocol.h"
#include "drbd_req.h"
-#include "drbd_wrappers.h"
#include <asm/unaligned.h>
#include <linux/drbd_limits.h>
#include <linux/kthread.h>
@@ -82,32 +81,6 @@ int drbd_adm_get_status_all(struct sk_buff *skb, struct netlink_callback *cb);
/* used blkdev_get_by_path, to claim our meta data device(s) */
static char *drbd_m_holder = "Hands off! this is DRBD's meta data device.";
-/* Configuration is strictly serialized, because generic netlink message
- * processing is strictly serialized by the genl_lock().
- * Which means we can use one static global drbd_config_context struct.
- */
-static struct drbd_config_context {
- /* assigned from drbd_genlmsghdr */
- unsigned int minor;
- /* assigned from request attributes, if present */
- unsigned int volume;
-#define VOLUME_UNSPECIFIED (-1U)
- /* pointer into the request skb,
- * limited lifetime! */
- char *resource_name;
- struct nlattr *my_addr;
- struct nlattr *peer_addr;
-
- /* reply buffer */
- struct sk_buff *reply_skb;
- /* pointer into reply buffer */
- struct drbd_genlmsghdr *reply_dh;
- /* resolved from attributes, if possible */
- struct drbd_device *device;
- struct drbd_resource *resource;
- struct drbd_connection *connection;
-} adm_ctx;
-
static void drbd_adm_send_reply(struct sk_buff *skb, struct genl_info *info)
{
genlmsg_end(skb, genlmsg_data(nlmsg_data(nlmsg_hdr(skb))));
@@ -117,9 +90,8 @@ static void drbd_adm_send_reply(struct sk_buff *skb, struct genl_info *info)
/* Used on a fresh "drbd_adm_prepare"d reply_skb, this cannot fail: The only
* reason it could fail was no space in skb, and there are 4k available. */
-int drbd_msg_put_info(const char *info)
+int drbd_msg_put_info(struct sk_buff *skb, const char *info)
{
- struct sk_buff *skb = adm_ctx.reply_skb;
struct nlattr *nla;
int err = -EMSGSIZE;
@@ -143,42 +115,46 @@ int drbd_msg_put_info(const char *info)
* and per-family private info->pointers.
* But we need to stay compatible with older kernels.
* If it returns successfully, adm_ctx members are valid.
+ *
+ * At this point, we still rely on the global genl_lock().
+ * If we want to avoid that, and allow "genl_family.parallel_ops", we may need
+ * to add additional synchronization against object destruction/modification.
*/
#define DRBD_ADM_NEED_MINOR 1
#define DRBD_ADM_NEED_RESOURCE 2
#define DRBD_ADM_NEED_CONNECTION 4
-static int drbd_adm_prepare(struct sk_buff *skb, struct genl_info *info,
- unsigned flags)
+static int drbd_adm_prepare(struct drbd_config_context *adm_ctx,
+ struct sk_buff *skb, struct genl_info *info, unsigned flags)
{
struct drbd_genlmsghdr *d_in = info->userhdr;
const u8 cmd = info->genlhdr->cmd;
int err;
- memset(&adm_ctx, 0, sizeof(adm_ctx));
+ memset(adm_ctx, 0, sizeof(*adm_ctx));
/* genl_rcv_msg only checks for CAP_NET_ADMIN on "GENL_ADMIN_PERM" :( */
if (cmd != DRBD_ADM_GET_STATUS && !capable(CAP_NET_ADMIN))
return -EPERM;
- adm_ctx.reply_skb = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
- if (!adm_ctx.reply_skb) {
+ adm_ctx->reply_skb = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!adm_ctx->reply_skb) {
err = -ENOMEM;
goto fail;
}
- adm_ctx.reply_dh = genlmsg_put_reply(adm_ctx.reply_skb,
+ adm_ctx->reply_dh = genlmsg_put_reply(adm_ctx->reply_skb,
info, &drbd_genl_family, 0, cmd);
/* put of a few bytes into a fresh skb of >= 4k will always succeed.
* but anyways */
- if (!adm_ctx.reply_dh) {
+ if (!adm_ctx->reply_dh) {
err = -ENOMEM;
goto fail;
}
- adm_ctx.reply_dh->minor = d_in->minor;
- adm_ctx.reply_dh->ret_code = NO_ERROR;
+ adm_ctx->reply_dh->minor = d_in->minor;
+ adm_ctx->reply_dh->ret_code = NO_ERROR;
- adm_ctx.volume = VOLUME_UNSPECIFIED;
+ adm_ctx->volume = VOLUME_UNSPECIFIED;
if (info->attrs[DRBD_NLA_CFG_CONTEXT]) {
struct nlattr *nla;
/* parse and validate only */
@@ -188,111 +164,131 @@ static int drbd_adm_prepare(struct sk_buff *skb, struct genl_info *info,
/* It was present, and valid,
* copy it over to the reply skb. */
- err = nla_put_nohdr(adm_ctx.reply_skb,
+ err = nla_put_nohdr(adm_ctx->reply_skb,
info->attrs[DRBD_NLA_CFG_CONTEXT]->nla_len,
info->attrs[DRBD_NLA_CFG_CONTEXT]);
if (err)
goto fail;
- /* and assign stuff to the global adm_ctx */
+ /* and assign stuff to the adm_ctx */
nla = nested_attr_tb[__nla_type(T_ctx_volume)];
if (nla)
- adm_ctx.volume = nla_get_u32(nla);
+ adm_ctx->volume = nla_get_u32(nla);
nla = nested_attr_tb[__nla_type(T_ctx_resource_name)];
if (nla)
- adm_ctx.resource_name = nla_data(nla);
- adm_ctx.my_addr = nested_attr_tb[__nla_type(T_ctx_my_addr)];
- adm_ctx.peer_addr = nested_attr_tb[__nla_type(T_ctx_peer_addr)];
- if ((adm_ctx.my_addr &&
- nla_len(adm_ctx.my_addr) > sizeof(adm_ctx.connection->my_addr)) ||
- (adm_ctx.peer_addr &&
- nla_len(adm_ctx.peer_addr) > sizeof(adm_ctx.connection->peer_addr))) {
+ adm_ctx->resource_name = nla_data(nla);
+ adm_ctx->my_addr = nested_attr_tb[__nla_type(T_ctx_my_addr)];
+ adm_ctx->peer_addr = nested_attr_tb[__nla_type(T_ctx_peer_addr)];
+ if ((adm_ctx->my_addr &&
+ nla_len(adm_ctx->my_addr) > sizeof(adm_ctx->connection->my_addr)) ||
+ (adm_ctx->peer_addr &&
+ nla_len(adm_ctx->peer_addr) > sizeof(adm_ctx->connection->peer_addr))) {
err = -EINVAL;
goto fail;
}
}
- adm_ctx.minor = d_in->minor;
- adm_ctx.device = minor_to_device(d_in->minor);
- if (adm_ctx.resource_name) {
- adm_ctx.resource = drbd_find_resource(adm_ctx.resource_name);
+ adm_ctx->minor = d_in->minor;
+ adm_ctx->device = minor_to_device(d_in->minor);
+
+ /* We are protected by the global genl_lock().
+ * But we may explicitly drop it/retake it in drbd_adm_set_role(),
+ * so make sure this object stays around. */
+ if (adm_ctx->device)
+ kref_get(&adm_ctx->device->kref);
+
+ if (adm_ctx->resource_name) {
+ adm_ctx->resource = drbd_find_resource(adm_ctx->resource_name);
}
- if (!adm_ctx.device && (flags & DRBD_ADM_NEED_MINOR)) {
- drbd_msg_put_info("unknown minor");
+ if (!adm_ctx->device && (flags & DRBD_ADM_NEED_MINOR)) {
+ drbd_msg_put_info(adm_ctx->reply_skb, "unknown minor");
return ERR_MINOR_INVALID;
}
- if (!adm_ctx.resource && (flags & DRBD_ADM_NEED_RESOURCE)) {
- drbd_msg_put_info("unknown resource");
- if (adm_ctx.resource_name)
+ if (!adm_ctx->resource && (flags & DRBD_ADM_NEED_RESOURCE)) {
+ drbd_msg_put_info(adm_ctx->reply_skb, "unknown resource");
+ if (adm_ctx->resource_name)
return ERR_RES_NOT_KNOWN;
return ERR_INVALID_REQUEST;
}
if (flags & DRBD_ADM_NEED_CONNECTION) {
- if (adm_ctx.resource) {
- drbd_msg_put_info("no resource name expected");
+ if (adm_ctx->resource) {
+ drbd_msg_put_info(adm_ctx->reply_skb, "no resource name expected");
return ERR_INVALID_REQUEST;
}
- if (adm_ctx.device) {
- drbd_msg_put_info("no minor number expected");
+ if (adm_ctx->device) {
+ drbd_msg_put_info(adm_ctx->reply_skb, "no minor number expected");
return ERR_INVALID_REQUEST;
}
- if (adm_ctx.my_addr && adm_ctx.peer_addr)
- adm_ctx.connection = conn_get_by_addrs(nla_data(adm_ctx.my_addr),
- nla_len(adm_ctx.my_addr),
- nla_data(adm_ctx.peer_addr),
- nla_len(adm_ctx.peer_addr));
- if (!adm_ctx.connection) {
- drbd_msg_put_info("unknown connection");
+ if (adm_ctx->my_addr && adm_ctx->peer_addr)
+ adm_ctx->connection = conn_get_by_addrs(nla_data(adm_ctx->my_addr),
+ nla_len(adm_ctx->my_addr),
+ nla_data(adm_ctx->peer_addr),
+ nla_len(adm_ctx->peer_addr));
+ if (!adm_ctx->connection) {
+ drbd_msg_put_info(adm_ctx->reply_skb, "unknown connection");
return ERR_INVALID_REQUEST;
}
}
/* some more paranoia, if the request was over-determined */
- if (adm_ctx.device && adm_ctx.resource &&
- adm_ctx.device->resource != adm_ctx.resource) {
+ if (adm_ctx->device && adm_ctx->resource &&
+ adm_ctx->device->resource != adm_ctx->resource) {
pr_warning("request: minor=%u, resource=%s; but that minor belongs to resource %s\n",
- adm_ctx.minor, adm_ctx.resource->name,
- adm_ctx.device->resource->name);
- drbd_msg_put_info("minor exists in different resource");
+ adm_ctx->minor, adm_ctx->resource->name,
+ adm_ctx->device->resource->name);
+ drbd_msg_put_info(adm_ctx->reply_skb, "minor exists in different resource");
return ERR_INVALID_REQUEST;
}
- if (adm_ctx.device &&
- adm_ctx.volume != VOLUME_UNSPECIFIED &&
- adm_ctx.volume != adm_ctx.device->vnr) {
+ if (adm_ctx->device &&
+ adm_ctx->volume != VOLUME_UNSPECIFIED &&
+ adm_ctx->volume != adm_ctx->device->vnr) {
pr_warning("request: minor=%u, volume=%u; but that minor is volume %u in %s\n",
- adm_ctx.minor, adm_ctx.volume,
- adm_ctx.device->vnr,
- adm_ctx.device->resource->name);
- drbd_msg_put_info("minor exists as different volume");
+ adm_ctx->minor, adm_ctx->volume,
+ adm_ctx->device->vnr,
+ adm_ctx->device->resource->name);
+ drbd_msg_put_info(adm_ctx->reply_skb, "minor exists as different volume");
return ERR_INVALID_REQUEST;
}
+ /* still, provide adm_ctx->resource always, if possible. */
+ if (!adm_ctx->resource) {
+ adm_ctx->resource = adm_ctx->device ? adm_ctx->device->resource
+ : adm_ctx->connection ? adm_ctx->connection->resource : NULL;
+ if (adm_ctx->resource)
+ kref_get(&adm_ctx->resource->kref);
+ }
+
return NO_ERROR;
fail:
- nlmsg_free(adm_ctx.reply_skb);
- adm_ctx.reply_skb = NULL;
+ nlmsg_free(adm_ctx->reply_skb);
+ adm_ctx->reply_skb = NULL;
return err;
}
-static int drbd_adm_finish(struct genl_info *info, int retcode)
+static int drbd_adm_finish(struct drbd_config_context *adm_ctx,
+ struct genl_info *info, int retcode)
{
- if (adm_ctx.connection) {
- kref_put(&adm_ctx.connection->kref, drbd_destroy_connection);
- adm_ctx.connection = NULL;
+ if (adm_ctx->device) {
+ kref_put(&adm_ctx->device->kref, drbd_destroy_device);
+ adm_ctx->device = NULL;
}
- if (adm_ctx.resource) {
- kref_put(&adm_ctx.resource->kref, drbd_destroy_resource);
- adm_ctx.resource = NULL;
+ if (adm_ctx->connection) {
+ kref_put(&adm_ctx->connection->kref, &drbd_destroy_connection);
+ adm_ctx->connection = NULL;
+ }
+ if (adm_ctx->resource) {
+ kref_put(&adm_ctx->resource->kref, drbd_destroy_resource);
+ adm_ctx->resource = NULL;
}
- if (!adm_ctx.reply_skb)
+ if (!adm_ctx->reply_skb)
return -ENOMEM;
- adm_ctx.reply_dh->ret_code = retcode;
- drbd_adm_send_reply(adm_ctx.reply_skb, info);
+ adm_ctx->reply_dh->ret_code = retcode;
+ drbd_adm_send_reply(adm_ctx->reply_skb, info);
return 0;
}
@@ -426,6 +422,14 @@ static enum drbd_fencing_p highest_fencing_policy(struct drbd_connection *connec
}
rcu_read_unlock();
+ if (fp == FP_NOT_AVAIL) {
+ /* IO Suspending works on the whole resource.
+ Do it only for one device. */
+ vnr = 0;
+ peer_device = idr_get_next(&connection->peer_devices, &vnr);
+ drbd_change_state(peer_device->device, CS_VERBOSE | CS_HARD, NS(susp_fen, 0));
+ }
+
return fp;
}
@@ -438,12 +442,13 @@ bool conn_try_outdate_peer(struct drbd_connection *connection)
char *ex_to_string;
int r;
+ spin_lock_irq(&connection->resource->req_lock);
if (connection->cstate >= C_WF_REPORT_PARAMS) {
drbd_err(connection, "Expected cstate < C_WF_REPORT_PARAMS\n");
+ spin_unlock_irq(&connection->resource->req_lock);
return false;
}
- spin_lock_irq(&connection->resource->req_lock);
connect_cnt = connection->connect_cnt;
spin_unlock_irq(&connection->resource->req_lock);
@@ -654,11 +659,11 @@ drbd_set_role(struct drbd_device *device, enum drbd_role new_role, int force)
put_ldev(device);
}
} else {
- mutex_lock(&device->resource->conf_update);
+ /* Called from drbd_adm_set_role only.
+ * We are still holding the conf_update mutex. */
nc = first_peer_device(device)->connection->net_conf;
if (nc)
nc->discard_my_data = 0; /* without copy; single bit op is atomic */
- mutex_unlock(&device->resource->conf_update);
set_disk_ro(device->vdisk, false);
if (get_ldev(device)) {
@@ -700,11 +705,12 @@ static const char *from_attrs_err_to_txt(int err)
int drbd_adm_set_role(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct set_role_parms parms;
int err;
enum drbd_ret_code retcode;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
@@ -715,17 +721,22 @@ int drbd_adm_set_role(struct sk_buff *skb, struct genl_info *info)
err = set_role_parms_from_attrs(&parms, info);
if (err) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto out;
}
}
+ genl_unlock();
+ mutex_lock(&adm_ctx.resource->adm_mutex);
if (info->genlhdr->cmd == DRBD_ADM_PRIMARY)
retcode = drbd_set_role(adm_ctx.device, R_PRIMARY, parms.assume_uptodate);
else
retcode = drbd_set_role(adm_ctx.device, R_SECONDARY, 0);
+
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
+ genl_lock();
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
@@ -1104,15 +1115,18 @@ static void drbd_setup_queue_param(struct drbd_device *device, unsigned int max_
struct request_queue * const q = device->rq_queue;
unsigned int max_hw_sectors = max_bio_size >> 9;
unsigned int max_segments = 0;
+ struct request_queue *b = NULL;
if (get_ldev_if_state(device, D_ATTACHING)) {
- struct request_queue * const b = device->ldev->backing_bdev->bd_disk->queue;
+ b = device->ldev->backing_bdev->bd_disk->queue;
max_hw_sectors = min(queue_max_hw_sectors(b), max_bio_size >> 9);
rcu_read_lock();
max_segments = rcu_dereference(device->ldev->disk_conf)->max_bio_bvecs;
rcu_read_unlock();
- put_ldev(device);
+
+ blk_set_stacking_limits(&q->limits);
+ blk_queue_max_write_same_sectors(q, 0);
}
blk_queue_logical_block_size(q, 512);
@@ -1121,8 +1135,25 @@ static void drbd_setup_queue_param(struct drbd_device *device, unsigned int max_
blk_queue_max_segments(q, max_segments ? max_segments : BLK_MAX_SEGMENTS);
blk_queue_segment_boundary(q, PAGE_CACHE_SIZE-1);
- if (get_ldev_if_state(device, D_ATTACHING)) {
- struct request_queue * const b = device->ldev->backing_bdev->bd_disk->queue;
+ if (b) {
+ struct drbd_connection *connection = first_peer_device(device)->connection;
+
+ if (blk_queue_discard(b) &&
+ (connection->cstate < C_CONNECTED || connection->agreed_features & FF_TRIM)) {
+ /* For now, don't allow more than one activity log extent worth of data
+ * to be discarded in one go. We may need to rework drbd_al_begin_io()
+ * to allow for even larger discard ranges */
+ q->limits.max_discard_sectors = DRBD_MAX_DISCARD_SECTORS;
+
+ queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q);
+ /* REALLY? Is stacking secdiscard "legal"? */
+ if (blk_queue_secdiscard(b))
+ queue_flag_set_unlocked(QUEUE_FLAG_SECDISCARD, q);
+ } else {
+ q->limits.max_discard_sectors = 0;
+ queue_flag_clear_unlocked(QUEUE_FLAG_DISCARD, q);
+ queue_flag_clear_unlocked(QUEUE_FLAG_SECDISCARD, q);
+ }
blk_queue_stack_limits(q, b);
@@ -1164,8 +1195,14 @@ void drbd_reconsider_max_bio_size(struct drbd_device *device)
peer = DRBD_MAX_BIO_SIZE_P95; /* drbd 8.3.8 onwards, before 8.4.0 */
else
peer = DRBD_MAX_BIO_SIZE;
- }
+ /* We may later detach and re-attach on a disconnected Primary.
+ * Avoid this setting to jump back in that case.
+ * We want to store what we know the peer DRBD can handle,
+ * not what the peer IO backend can handle. */
+ if (peer > device->peer_max_bio_size)
+ device->peer_max_bio_size = peer;
+ }
new = min(local, peer);
if (device->state.role == R_PRIMARY && new < now)
@@ -1258,19 +1295,21 @@ static unsigned int drbd_al_extents_max(struct drbd_backing_dev *bdev)
int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
enum drbd_ret_code retcode;
struct drbd_device *device;
struct disk_conf *new_disk_conf, *old_disk_conf;
struct fifo_buffer *old_plan = NULL, *new_plan = NULL;
int err, fifo_size;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
- goto out;
+ goto finish;
device = adm_ctx.device;
+ mutex_lock(&adm_ctx.resource->adm_mutex);
/* we also need a disk
* to change the options on */
@@ -1294,7 +1333,7 @@ int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info)
err = disk_conf_from_attrs_for_change(new_disk_conf, info);
if (err && err != -ENOMSG) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto fail_unlock;
}
@@ -1385,12 +1424,15 @@ fail_unlock:
success:
put_ldev(device);
out:
- drbd_adm_finish(info, retcode);
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
+ finish:
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct drbd_device *device;
int err;
enum drbd_ret_code retcode;
@@ -1406,13 +1448,14 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
enum drbd_state_rv rv;
struct net_conf *nc;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
goto finish;
device = adm_ctx.device;
+ mutex_lock(&adm_ctx.resource->adm_mutex);
conn_reconfig_start(first_peer_device(device)->connection);
/* if you want to reconfigure, please tear down first */
@@ -1455,7 +1498,7 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
err = disk_conf_from_attrs(new_disk_conf, info);
if (err) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto fail;
}
@@ -1619,7 +1662,7 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
}
if (device->state.conn < C_CONNECTED &&
- device->state.role == R_PRIMARY &&
+ device->state.role == R_PRIMARY && device->ed_uuid &&
(device->ed_uuid & ~((u64)1)) != (nbc->md.uuid[UI_CURRENT] & ~((u64)1))) {
drbd_err(device, "Can only attach to data with current UUID=%016llX\n",
(unsigned long long)device->ed_uuid);
@@ -1797,7 +1840,8 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
kobject_uevent(&disk_to_dev(device->vdisk)->kobj, KOBJ_CHANGE);
put_ldev(device);
conn_reconfig_done(first_peer_device(device)->connection);
- drbd_adm_finish(info, retcode);
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
force_diskless_dec:
@@ -1819,9 +1863,9 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
kfree(new_disk_conf);
lc_destroy(resync_lru);
kfree(new_plan);
-
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
finish:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
@@ -1860,11 +1904,12 @@ out:
* Only then we have finally detached. */
int drbd_adm_detach(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
enum drbd_ret_code retcode;
struct detach_parms parms = { };
int err;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
@@ -1874,14 +1919,16 @@ int drbd_adm_detach(struct sk_buff *skb, struct genl_info *info)
err = detach_parms_from_attrs(&parms, info);
if (err) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto out;
}
}
+ mutex_lock(&adm_ctx.resource->adm_mutex);
retcode = adm_detach(adm_ctx.device, parms.force_detach);
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
@@ -2055,6 +2102,7 @@ static void free_crypto(struct crypto *crypto)
int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
enum drbd_ret_code retcode;
struct drbd_connection *connection;
struct net_conf *old_net_conf, *new_net_conf = NULL;
@@ -2063,13 +2111,14 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
int rsr; /* re-sync running */
struct crypto crypto = { };
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_CONNECTION);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_CONNECTION);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
- goto out;
+ goto finish;
connection = adm_ctx.connection;
+ mutex_lock(&adm_ctx.resource->adm_mutex);
new_net_conf = kzalloc(sizeof(struct net_conf), GFP_KERNEL);
if (!new_net_conf) {
@@ -2084,7 +2133,7 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
old_net_conf = connection->net_conf;
if (!old_net_conf) {
- drbd_msg_put_info("net conf missing, try connect");
+ drbd_msg_put_info(adm_ctx.reply_skb, "net conf missing, try connect");
retcode = ERR_INVALID_REQUEST;
goto fail;
}
@@ -2096,7 +2145,7 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
err = net_conf_from_attrs_for_change(new_net_conf, info);
if (err && err != -ENOMSG) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto fail;
}
@@ -2167,12 +2216,15 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
done:
conn_reconfig_done(connection);
out:
- drbd_adm_finish(info, retcode);
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
+ finish:
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct drbd_peer_device *peer_device;
struct net_conf *old_net_conf, *new_net_conf = NULL;
struct crypto crypto = { };
@@ -2182,14 +2234,14 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
int i;
int err;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_RESOURCE);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
goto out;
if (!(adm_ctx.my_addr && adm_ctx.peer_addr)) {
- drbd_msg_put_info("connection endpoint(s) missing");
+ drbd_msg_put_info(adm_ctx.reply_skb, "connection endpoint(s) missing");
retcode = ERR_INVALID_REQUEST;
goto out;
}
@@ -2215,6 +2267,7 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
}
}
+ mutex_lock(&adm_ctx.resource->adm_mutex);
connection = first_connection(adm_ctx.resource);
conn_reconfig_start(connection);
@@ -2235,7 +2288,7 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
err = net_conf_from_attrs(new_net_conf, info);
if (err && err != -ENOMSG) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto fail;
}
@@ -2284,7 +2337,8 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
retcode = conn_request_state(connection, NS(conn, C_UNCONNECTED), CS_VERBOSE);
conn_reconfig_done(connection);
- drbd_adm_finish(info, retcode);
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
fail:
@@ -2292,8 +2346,9 @@ fail:
kfree(new_net_conf);
conn_reconfig_done(connection);
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
@@ -2356,13 +2411,14 @@ static enum drbd_state_rv conn_try_disconnect(struct drbd_connection *connection
int drbd_adm_disconnect(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct disconnect_parms parms;
struct drbd_connection *connection;
enum drbd_state_rv rv;
enum drbd_ret_code retcode;
int err;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_CONNECTION);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_CONNECTION);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
@@ -2374,18 +2430,20 @@ int drbd_adm_disconnect(struct sk_buff *skb, struct genl_info *info)
err = disconnect_parms_from_attrs(&parms, info);
if (err) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto fail;
}
}
+ mutex_lock(&adm_ctx.resource->adm_mutex);
rv = conn_try_disconnect(connection, parms.force_disconnect);
if (rv < SS_SUCCESS)
retcode = rv; /* FIXME: Type mismatch. */
else
retcode = NO_ERROR;
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
fail:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
@@ -2407,6 +2465,7 @@ void resync_after_online_grow(struct drbd_device *device)
int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct disk_conf *old_disk_conf, *new_disk_conf = NULL;
struct resize_parms rs;
struct drbd_device *device;
@@ -2417,12 +2476,13 @@ int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info)
sector_t u_size;
int err;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
- goto fail;
+ goto finish;
+ mutex_lock(&adm_ctx.resource->adm_mutex);
device = adm_ctx.device;
if (!get_ldev(device)) {
retcode = ERR_NO_DISK;
@@ -2436,7 +2496,7 @@ int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info)
err = resize_parms_from_attrs(&rs, info);
if (err) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto fail_ldev;
}
}
@@ -2482,7 +2542,7 @@ int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info)
goto fail_ldev;
}
- if (device->state.conn != C_CONNECTED) {
+ if (device->state.conn != C_CONNECTED && !rs.resize_force) {
retcode = ERR_MD_LAYOUT_CONNECTED;
goto fail_ldev;
}
@@ -2528,7 +2588,9 @@ int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info)
}
fail:
- drbd_adm_finish(info, retcode);
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
+ finish:
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
fail_ldev:
@@ -2538,11 +2600,12 @@ int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info)
int drbd_adm_resource_opts(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
enum drbd_ret_code retcode;
struct res_opts res_opts;
int err;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_RESOURCE);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
@@ -2555,33 +2618,37 @@ int drbd_adm_resource_opts(struct sk_buff *skb, struct genl_info *info)
err = res_opts_from_attrs(&res_opts, info);
if (err && err != -ENOMSG) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto fail;
}
+ mutex_lock(&adm_ctx.resource->adm_mutex);
err = set_resource_options(adm_ctx.resource, &res_opts);
if (err) {
retcode = ERR_INVALID_REQUEST;
if (err == -ENOMEM)
retcode = ERR_NOMEM;
}
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
fail:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
int drbd_adm_invalidate(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct drbd_device *device;
int retcode; /* enum drbd_ret_code rsp. enum drbd_state_rv */
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
goto out;
+ mutex_lock(&adm_ctx.resource->adm_mutex);
device = adm_ctx.device;
/* If there is still bitmap IO pending, probably because of a previous
@@ -2605,26 +2672,29 @@ int drbd_adm_invalidate(struct sk_buff *skb, struct genl_info *info)
} else
retcode = drbd_request_state(device, NS(conn, C_STARTING_SYNC_T));
drbd_resume_io(device);
-
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
static int drbd_adm_simple_request_state(struct sk_buff *skb, struct genl_info *info,
union drbd_state mask, union drbd_state val)
{
+ struct drbd_config_context adm_ctx;
enum drbd_ret_code retcode;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
goto out;
+ mutex_lock(&adm_ctx.resource->adm_mutex);
retcode = drbd_request_state(adm_ctx.device, mask, val);
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
@@ -2639,15 +2709,17 @@ static int drbd_bmio_set_susp_al(struct drbd_device *device)
int drbd_adm_invalidate_peer(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
int retcode; /* drbd_ret_code, drbd_state_rv */
struct drbd_device *device;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
goto out;
+ mutex_lock(&adm_ctx.resource->adm_mutex);
device = adm_ctx.device;
/* If there is still bitmap IO pending, probably because of a previous
@@ -2674,40 +2746,45 @@ int drbd_adm_invalidate_peer(struct sk_buff *skb, struct genl_info *info)
} else
retcode = drbd_request_state(device, NS(conn, C_STARTING_SYNC_S));
drbd_resume_io(device);
-
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
int drbd_adm_pause_sync(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
enum drbd_ret_code retcode;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
goto out;
+ mutex_lock(&adm_ctx.resource->adm_mutex);
if (drbd_request_state(adm_ctx.device, NS(user_isp, 1)) == SS_NOTHING_TO_DO)
retcode = ERR_PAUSE_IS_SET;
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
int drbd_adm_resume_sync(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
union drbd_dev_state s;
enum drbd_ret_code retcode;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
goto out;
+ mutex_lock(&adm_ctx.resource->adm_mutex);
if (drbd_request_state(adm_ctx.device, NS(user_isp, 0)) == SS_NOTHING_TO_DO) {
s = adm_ctx.device->state;
if (s.conn == C_PAUSED_SYNC_S || s.conn == C_PAUSED_SYNC_T) {
@@ -2717,9 +2794,9 @@ int drbd_adm_resume_sync(struct sk_buff *skb, struct genl_info *info)
retcode = ERR_PAUSE_IS_CLEAR;
}
}
-
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
@@ -2730,15 +2807,17 @@ int drbd_adm_suspend_io(struct sk_buff *skb, struct genl_info *info)
int drbd_adm_resume_io(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct drbd_device *device;
int retcode; /* enum drbd_ret_code rsp. enum drbd_state_rv */
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
goto out;
+ mutex_lock(&adm_ctx.resource->adm_mutex);
device = adm_ctx.device;
if (test_bit(NEW_CUR_UUID, &device->flags)) {
drbd_uuid_new_current(device);
@@ -2753,9 +2832,9 @@ int drbd_adm_resume_io(struct sk_buff *skb, struct genl_info *info)
tl_restart(first_peer_device(device)->connection, FAIL_FROZEN_DISK_IO);
}
drbd_resume_io(device);
-
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
@@ -2931,10 +3010,11 @@ nla_put_failure:
int drbd_adm_get_status(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
enum drbd_ret_code retcode;
int err;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
@@ -2946,7 +3026,7 @@ int drbd_adm_get_status(struct sk_buff *skb, struct genl_info *info)
return err;
}
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
@@ -3133,11 +3213,12 @@ dump:
int drbd_adm_get_timeout_type(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
enum drbd_ret_code retcode;
struct timeout_parms tp;
int err;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
@@ -3154,17 +3235,18 @@ int drbd_adm_get_timeout_type(struct sk_buff *skb, struct genl_info *info)
return err;
}
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
int drbd_adm_start_ov(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct drbd_device *device;
enum drbd_ret_code retcode;
struct start_ov_parms parms;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
@@ -3179,10 +3261,12 @@ int drbd_adm_start_ov(struct sk_buff *skb, struct genl_info *info)
int err = start_ov_parms_from_attrs(&parms, info);
if (err) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto out;
}
}
+ mutex_lock(&adm_ctx.resource->adm_mutex);
+
/* w_make_ov_request expects position to be aligned */
device->ov_start_sector = parms.ov_start_sector & ~(BM_SECT_PER_BIT-1);
device->ov_stop_sector = parms.ov_stop_sector;
@@ -3193,21 +3277,24 @@ int drbd_adm_start_ov(struct sk_buff *skb, struct genl_info *info)
wait_event(device->misc_wait, !test_bit(BITMAP_IO, &device->flags));
retcode = drbd_request_state(device, NS(conn, C_VERIFY_S));
drbd_resume_io(device);
+
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
int drbd_adm_new_c_uuid(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct drbd_device *device;
enum drbd_ret_code retcode;
int skip_initial_sync = 0;
int err;
struct new_c_uuid_parms args;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
@@ -3219,11 +3306,12 @@ int drbd_adm_new_c_uuid(struct sk_buff *skb, struct genl_info *info)
err = new_c_uuid_parms_from_attrs(&args, info);
if (err) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto out_nolock;
}
}
+ mutex_lock(&adm_ctx.resource->adm_mutex);
mutex_lock(device->state_mutex); /* Protects us against serialized state changes. */
if (!get_ldev(device)) {
@@ -3268,22 +3356,24 @@ out_dec:
put_ldev(device);
out:
mutex_unlock(device->state_mutex);
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out_nolock:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
static enum drbd_ret_code
-drbd_check_resource_name(const char *name)
+drbd_check_resource_name(struct drbd_config_context *adm_ctx)
{
+ const char *name = adm_ctx->resource_name;
if (!name || !name[0]) {
- drbd_msg_put_info("resource name missing");
+ drbd_msg_put_info(adm_ctx->reply_skb, "resource name missing");
return ERR_MANDATORY_TAG;
}
/* if we want to use these in sysfs/configfs/debugfs some day,
* we must not allow slashes */
if (strchr(name, '/')) {
- drbd_msg_put_info("invalid resource name");
+ drbd_msg_put_info(adm_ctx->reply_skb, "invalid resource name");
return ERR_INVALID_REQUEST;
}
return NO_ERROR;
@@ -3291,11 +3381,12 @@ drbd_check_resource_name(const char *name)
int drbd_adm_new_resource(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
enum drbd_ret_code retcode;
struct res_opts res_opts;
int err;
- retcode = drbd_adm_prepare(skb, info, 0);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, 0);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
@@ -3305,48 +3396,50 @@ int drbd_adm_new_resource(struct sk_buff *skb, struct genl_info *info)
err = res_opts_from_attrs(&res_opts, info);
if (err && err != -ENOMSG) {
retcode = ERR_MANDATORY_TAG;
- drbd_msg_put_info(from_attrs_err_to_txt(err));
+ drbd_msg_put_info(adm_ctx.reply_skb, from_attrs_err_to_txt(err));
goto out;
}
- retcode = drbd_check_resource_name(adm_ctx.resource_name);
+ retcode = drbd_check_resource_name(&adm_ctx);
if (retcode != NO_ERROR)
goto out;
if (adm_ctx.resource) {
if (info->nlhdr->nlmsg_flags & NLM_F_EXCL) {
retcode = ERR_INVALID_REQUEST;
- drbd_msg_put_info("resource exists");
+ drbd_msg_put_info(adm_ctx.reply_skb, "resource exists");
}
/* else: still NO_ERROR */
goto out;
}
+ /* not yet safe for genl_family.parallel_ops */
if (!conn_create(adm_ctx.resource_name, &res_opts))
retcode = ERR_NOMEM;
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
int drbd_adm_new_minor(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct drbd_genlmsghdr *dh = info->userhdr;
enum drbd_ret_code retcode;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_RESOURCE);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
goto out;
if (dh->minor > MINORMASK) {
- drbd_msg_put_info("requested minor out of range");
+ drbd_msg_put_info(adm_ctx.reply_skb, "requested minor out of range");
retcode = ERR_INVALID_REQUEST;
goto out;
}
if (adm_ctx.volume > DRBD_VOLUME_MAX) {
- drbd_msg_put_info("requested volume id out of range");
+ drbd_msg_put_info(adm_ctx.reply_skb, "requested volume id out of range");
retcode = ERR_INVALID_REQUEST;
goto out;
}
@@ -3360,9 +3453,11 @@ int drbd_adm_new_minor(struct sk_buff *skb, struct genl_info *info)
goto out;
}
- retcode = drbd_create_device(adm_ctx.resource, dh->minor, adm_ctx.volume);
+ mutex_lock(&adm_ctx.resource->adm_mutex);
+ retcode = drbd_create_device(&adm_ctx, dh->minor);
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
@@ -3383,35 +3478,40 @@ static enum drbd_ret_code adm_del_minor(struct drbd_device *device)
int drbd_adm_del_minor(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
enum drbd_ret_code retcode;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
goto out;
+ mutex_lock(&adm_ctx.resource->adm_mutex);
retcode = adm_del_minor(adm_ctx.device);
+ mutex_unlock(&adm_ctx.resource->adm_mutex);
out:
- drbd_adm_finish(info, retcode);
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
int drbd_adm_down(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct drbd_resource *resource;
struct drbd_connection *connection;
struct drbd_device *device;
int retcode; /* enum drbd_ret_code rsp. enum drbd_state_rv */
unsigned i;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_RESOURCE);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
- goto out;
+ goto finish;
resource = adm_ctx.resource;
+ mutex_lock(&resource->adm_mutex);
/* demote */
for_each_connection(connection, resource) {
struct drbd_peer_device *peer_device;
@@ -3419,14 +3519,14 @@ int drbd_adm_down(struct sk_buff *skb, struct genl_info *info)
idr_for_each_entry(&connection->peer_devices, peer_device, i) {
retcode = drbd_set_role(peer_device->device, R_SECONDARY, 0);
if (retcode < SS_SUCCESS) {
- drbd_msg_put_info("failed to demote");
+ drbd_msg_put_info(adm_ctx.reply_skb, "failed to demote");
goto out;
}
}
retcode = conn_try_disconnect(connection, 0);
if (retcode < SS_SUCCESS) {
- drbd_msg_put_info("failed to disconnect");
+ drbd_msg_put_info(adm_ctx.reply_skb, "failed to disconnect");
goto out;
}
}
@@ -3435,7 +3535,7 @@ int drbd_adm_down(struct sk_buff *skb, struct genl_info *info)
idr_for_each_entry(&resource->devices, device, i) {
retcode = adm_detach(device, 0);
if (retcode < SS_SUCCESS || retcode > NO_ERROR) {
- drbd_msg_put_info("failed to detach");
+ drbd_msg_put_info(adm_ctx.reply_skb, "failed to detach");
goto out;
}
}
@@ -3453,7 +3553,7 @@ int drbd_adm_down(struct sk_buff *skb, struct genl_info *info)
retcode = adm_del_minor(device);
if (retcode != NO_ERROR) {
/* "can not happen" */
- drbd_msg_put_info("failed to delete volume");
+ drbd_msg_put_info(adm_ctx.reply_skb, "failed to delete volume");
goto out;
}
}
@@ -3462,25 +3562,28 @@ int drbd_adm_down(struct sk_buff *skb, struct genl_info *info)
synchronize_rcu();
drbd_free_resource(resource);
retcode = NO_ERROR;
-
out:
- drbd_adm_finish(info, retcode);
+ mutex_unlock(&resource->adm_mutex);
+finish:
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
int drbd_adm_del_resource(struct sk_buff *skb, struct genl_info *info)
{
+ struct drbd_config_context adm_ctx;
struct drbd_resource *resource;
struct drbd_connection *connection;
enum drbd_ret_code retcode;
- retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE);
+ retcode = drbd_adm_prepare(&adm_ctx, skb, info, DRBD_ADM_NEED_RESOURCE);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
- goto out;
+ goto finish;
resource = adm_ctx.resource;
+ mutex_lock(&resource->adm_mutex);
for_each_connection(connection, resource) {
if (connection->cstate > C_STANDALONE) {
retcode = ERR_NET_CONFIGURED;
@@ -3499,7 +3602,9 @@ int drbd_adm_del_resource(struct sk_buff *skb, struct genl_info *info)
drbd_free_resource(resource);
retcode = NO_ERROR;
out:
- drbd_adm_finish(info, retcode);
+ mutex_unlock(&resource->adm_mutex);
+finish:
+ drbd_adm_finish(&adm_ctx, info, retcode);
return 0;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-02 22:29:08 +0300