diff options
| -rw-r--r-- | kernel/taskstats.c | 38 |
1 files changed, 16 insertions, 22 deletions
diff --git a/kernel/taskstats.c b/kernel/taskstats.c index b0aad99c4f8d..4c3476fa058d 100644 --- a/kernel/taskstats.c +++ b/kernel/taskstats.c @@ -69,7 +69,7 @@ enum actions { }; static int prepare_reply(struct genl_info *info, u8 cmd, struct sk_buff **skbp, - void **replyp, size_t size) + size_t size) { struct sk_buff *skb; void *reply; @@ -94,7 +94,6 @@ static int prepare_reply(struct genl_info *info, u8 cmd, struct sk_buff **skbp, } *skbp = skb; - *replyp = reply; return 0; } @@ -351,11 +350,13 @@ static struct taskstats *mk_reply(struct sk_buff *skb, int type, u32 pid) struct nlattr *na, *ret; int aggr; - aggr = TASKSTATS_TYPE_AGGR_TGID; - if (type == TASKSTATS_TYPE_PID) - aggr = TASKSTATS_TYPE_AGGR_PID; + aggr = (type == TASKSTATS_TYPE_PID) + ? TASKSTATS_TYPE_AGGR_PID + : TASKSTATS_TYPE_AGGR_TGID; na = nla_nest_start(skb, aggr); + if (!na) + goto err; if (nla_put(skb, type, sizeof(pid), &pid) < 0) goto err; ret = nla_reserve(skb, TASKSTATS_TYPE_STATS, sizeof(struct taskstats)); @@ -373,7 +374,6 @@ static int taskstats_user_cmd(struct sk_buff *skb, struct genl_info *info) int rc = 0; struct sk_buff *rep_skb; struct taskstats *stats; - void *reply; size_t size; cpumask_t mask; @@ -395,7 +395,7 @@ static int taskstats_user_cmd(struct sk_buff *skb, struct genl_info *info) size = nla_total_size(sizeof(u32)) + nla_total_size(sizeof(struct taskstats)) + nla_total_size(0); - rc = prepare_reply(info, TASKSTATS_CMD_NEW, &rep_skb, &reply, size); + rc = prepare_reply(info, TASKSTATS_CMD_NEW, &rep_skb, size); if (rc < 0) return rc; @@ -404,27 +404,24 @@ static int taskstats_user_cmd(struct sk_buff *skb, struct genl_info *info) u32 pid = nla_get_u32(info->attrs[TASKSTATS_CMD_ATTR_PID]); stats = mk_reply(rep_skb, TASKSTATS_TYPE_PID, pid); if (!stats) - goto nla_err; + goto err; rc = fill_pid(pid, NULL, stats); if (rc < 0) - goto nla_err; + goto err; } else if (info->attrs[TASKSTATS_CMD_ATTR_TGID]) { u32 tgid = nla_get_u32(info->attrs[TASKSTATS_CMD_ATTR_TGID]); stats = mk_reply(rep_skb, TASKSTATS_TYPE_TGID, tgid); if (!stats) - goto nla_err; + goto err; rc = fill_tgid(tgid, NULL, stats); if (rc < 0) - goto nla_err; + goto err; } else goto err; return send_reply(rep_skb, info->snd_pid); - -nla_err: - genlmsg_cancel(rep_skb, reply); err: nlmsg_free(rep_skb); return rc; @@ -461,7 +458,6 @@ void taskstats_exit(struct task_struct *tsk, int group_dead) struct listener_list *listeners; struct taskstats *stats; struct sk_buff *rep_skb; - void *reply; size_t size; int is_thread_group; @@ -486,17 +482,17 @@ void taskstats_exit(struct task_struct *tsk, int group_dead) if (list_empty(&listeners->list)) return; - rc = prepare_reply(NULL, TASKSTATS_CMD_NEW, &rep_skb, &reply, size); + rc = prepare_reply(NULL, TASKSTATS_CMD_NEW, &rep_skb, size); if (rc < 0) return; stats = mk_reply(rep_skb, TASKSTATS_TYPE_PID, tsk->pid); if (!stats) - goto nla_err; + goto err; rc = fill_pid(tsk->pid, tsk, stats); if (rc < 0) - goto nla_err; + goto err; /* * Doesn't matter if tsk is the leader or the last group member leaving @@ -506,16 +502,14 @@ void taskstats_exit(struct task_struct *tsk, int group_dead) stats = mk_reply(rep_skb, TASKSTATS_TYPE_TGID, tsk->tgid); if (!stats) - goto nla_err; + goto err; memcpy(stats, tsk->signal->stats, sizeof(*stats)); send: send_cpu_listeners(rep_skb, listeners); return; - -nla_err: - genlmsg_cancel(rep_skb, reply); +err: nlmsg_free(rep_skb); } |