Skip to content

Commit

Permalink
---
Browse files Browse the repository at this point in the history
yaml
---
r: 346085
b: refs/heads/master
c: 01b39b5
h: refs/heads/master
i:
  346083: f74523a
v: v3
  • Loading branch information
Andreas Gruenbacher authored and Philipp Reisner committed Nov 8, 2012
1 parent 93c2b12 commit 5d598e8
Show file tree
Hide file tree
Showing 7 changed files with 67 additions and 57 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 7c3063cc6f0e75cdf312f5f318f9a4c02e460397
refs/heads/master: 01b39b50d34733646fe46a582fa60d3b53f6180d
1 change: 1 addition & 0 deletions trunk/drivers/block/drbd/Makefile
Original file line number Diff line number Diff line change
Expand Up @@ -2,5 +2,6 @@ drbd-y := drbd_bitmap.o drbd_proc.o
drbd-y += drbd_worker.o drbd_receiver.o drbd_req.o drbd_actlog.o
drbd-y += drbd_main.o drbd_strings.o drbd_nl.o
drbd-y += drbd_interval.o drbd_state.o
drbd-y += drbd_nla.o

obj-$(CONFIG_BLK_DEV_DRBD) += drbd.o
6 changes: 0 additions & 6 deletions trunk/drivers/block/drbd/drbd_int.h
Original file line number Diff line number Diff line change
Expand Up @@ -1407,12 +1407,6 @@ extern bool conn_try_outdate_peer(struct drbd_tconn *tconn);
extern void conn_try_outdate_peer_async(struct drbd_tconn *tconn);
extern int drbd_khelper(struct drbd_conf *mdev, char *cmd);

struct nla_policy;
extern int drbd_nla_check_mandatory(int maxtype, struct nlattr *nla);
extern int drbd_nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla,
const struct nla_policy *policy);
extern struct nlattr *drbd_nla_find_nested(int maxtype, struct nlattr *nla, int attrtype);

/* drbd_worker.c */
extern int drbd_worker(struct drbd_thread *thi);
enum drbd_ret_code drbd_resync_after_valid(struct drbd_conf *mdev, int o_minor);
Expand Down
51 changes: 1 addition & 50 deletions trunk/drivers/block/drbd/drbd_nl.c
Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,7 @@ int drbd_adm_get_timeout_type(struct sk_buff *skb, struct genl_info *info);
int drbd_adm_get_status_all(struct sk_buff *skb, struct netlink_callback *cb);

#include <linux/drbd_genl_api.h>
#include "drbd_nla.h"
#include <linux/genl_magic_func.h>

/* used blkdev_get_by_path, to claim our meta data device(s) */
Expand Down Expand Up @@ -3219,53 +3220,3 @@ void drbd_bcast_event(struct drbd_conf *mdev, const struct sib_info *sib)
"Event seq:%u sib_reason:%u\n",
err, seq, sib->sib_reason);
}

int drbd_nla_check_mandatory(int maxtype, struct nlattr *nla)
{
struct nlattr *head = nla_data(nla);
int len = nla_len(nla);
int rem;

/*
* validate_nla (called from nla_parse_nested) ignores attributes
* beyond maxtype, and does not understand the DRBD_GENLA_F_MANDATORY flag.
* In order to have it validate attributes with the DRBD_GENLA_F_MANDATORY
* flag set also, check and remove that flag before calling
* nla_parse_nested.
*/

nla_for_each_attr(nla, head, len, rem) {
if (nla->nla_type & DRBD_GENLA_F_MANDATORY) {
nla->nla_type &= ~DRBD_GENLA_F_MANDATORY;
if (nla_type(nla) > maxtype)
return -EOPNOTSUPP;
}
}
return 0;
}

int drbd_nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla,
const struct nla_policy *policy)
{
int err;

err = drbd_nla_check_mandatory(maxtype, nla);
if (!err)
err = nla_parse_nested(tb, maxtype, nla, policy);

return err;
}

struct nlattr *drbd_nla_find_nested(int maxtype, struct nlattr *nla, int attrtype)
{
int err;
/*
* If any nested attribute has the DRBD_GENLA_F_MANDATORY flag set and
* we don't know about that attribute, reject all the nested
* attributes.
*/
err = drbd_nla_check_mandatory(maxtype, nla);
if (err)
return ERR_PTR(err);
return nla_find_nested(nla, attrtype);
}
55 changes: 55 additions & 0 deletions trunk/drivers/block/drbd/drbd_nla.c
Original file line number Diff line number Diff line change
@@ -0,0 +1,55 @@
#include "drbd_wrappers.h"
#include <linux/kernel.h>
#include <net/netlink.h>
#include <linux/drbd_genl_api.h>
#include "drbd_nla.h"

static int drbd_nla_check_mandatory(int maxtype, struct nlattr *nla)
{
struct nlattr *head = nla_data(nla);
int len = nla_len(nla);
int rem;

/*
* validate_nla (called from nla_parse_nested) ignores attributes
* beyond maxtype, and does not understand the DRBD_GENLA_F_MANDATORY flag.
* In order to have it validate attributes with the DRBD_GENLA_F_MANDATORY
* flag set also, check and remove that flag before calling
* nla_parse_nested.
*/

nla_for_each_attr(nla, head, len, rem) {
if (nla->nla_type & DRBD_GENLA_F_MANDATORY) {
nla->nla_type &= ~DRBD_GENLA_F_MANDATORY;
if (nla_type(nla) > maxtype)
return -EOPNOTSUPP;
}
}
return 0;
}

int drbd_nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla,
const struct nla_policy *policy)
{
int err;

err = drbd_nla_check_mandatory(maxtype, nla);
if (!err)
err = nla_parse_nested(tb, maxtype, nla, policy);

return err;
}

struct nlattr *drbd_nla_find_nested(int maxtype, struct nlattr *nla, int attrtype)
{
int err;
/*
* If any nested attribute has the DRBD_GENLA_F_MANDATORY flag set and
* we don't know about that attribute, reject all the nested
* attributes.
*/
err = drbd_nla_check_mandatory(maxtype, nla);
if (err)
return ERR_PTR(err);
return nla_find_nested(nla, attrtype);
}
8 changes: 8 additions & 0 deletions trunk/drivers/block/drbd/drbd_nla.h
Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
#ifndef __DRBD_NLA_H
#define __DRBD_NLA_H

extern int drbd_nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla,
const struct nla_policy *policy);
extern struct nlattr *drbd_nla_find_nested(int maxtype, struct nlattr *nla, int attrtype);

#endif /* __DRBD_NLA_H */
1 change: 1 addition & 0 deletions trunk/drivers/block/drbd/drbd_wrappers.h
Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@

#include <linux/ctype.h>
#include <linux/mm.h>
#include "drbd_int.h"

/* see get_sb_bdev and bd_claim */
extern char *drbd_sec_holder;
Expand Down

0 comments on commit 5d598e8

Please sign in to comment.