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Message-ID: <20121207152216.GC29819@shamino.rdu.redhat.com>
Date: Fri, 7 Dec 2012 10:22:16 -0500
From: Neil Horman <nhorman@...driver.com>
To: Abhijit Pawar <abhi.c.pawar@...il.com>
Cc: "David S. Miller" <davem@...emloft.net>,
Pablo Neira Ayuso <pablo@...filter.org>,
Patrick McHardy <kaber@...sh.net>,
Alexey Kuznetsov <kuznet@....inr.ac.ru>,
James Morris <jmorris@...ei.org>,
Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
"John W. Linville" <linville@...driver.com>,
Johannes Berg <johannes@...solutions.net>,
Cong Wang <amwang@...hat.com>,
Eric Dumazet <edumazet@...gle.com>,
Joe Perches <joe@...ches.com>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, netfilter-devel@...r.kernel.org,
netfilter@...r.kernel.org, coreteam@...filter.org,
linux-wireless@...r.kernel.org
Subject: Re: [PATCH 2/4] net: remove obsolete simple_strto<foo>
On Fri, Dec 07, 2012 at 05:19:58PM +0530, Abhijit Pawar wrote:
> This patch replace the obsolete simple_strto<foo> with kstrto<foo>
>
> Signed-off-by: Abhijit Pawar <abhi.c.pawar@...il.com>
> ---
> net/core/netpoll.c | 9 +++++++--
> net/ipv4/netfilter/ipt_CLUSTERIP.c | 9 +++++++--
> net/mac80211/debugfs_sta.c | 4 +++-
> net/netfilter/nf_conntrack_core.c | 6 ++++--
> 4 files changed, 21 insertions(+), 7 deletions(-)
>
> diff --git a/net/core/netpoll.c b/net/core/netpoll.c
> index 77a0388..596b127 100644
> --- a/net/core/netpoll.c
> +++ b/net/core/netpoll.c
> @@ -668,13 +668,16 @@ EXPORT_SYMBOL(netpoll_print_options);
>
> int netpoll_parse_options(struct netpoll *np, char *opt)
> {
> + int rc;
> char *cur=opt, *delim;
>
> if (*cur != '@') {
> if ((delim = strchr(cur, '@')) == NULL)
> goto parse_failed;
> *delim = 0;
> - np->local_port = simple_strtol(cur, NULL, 10);
> + rc = kstrtol(cur, 10, &np->local_port);
> + if (rc)
> + goto parse_failed;
Perhaps consolidate this to:
if (kstrtol(cur, 10, &np->local_port)
goto parse_failed
Then you don't have to declare the new stack variable
> cur = delim;
> }
> cur++;
> @@ -705,7 +708,9 @@ int netpoll_parse_options(struct netpoll *np, char *opt)
> *delim = 0;
> if (*cur == ' ' || *cur == '\t')
> np_info(np, "warning: whitespace is not allowed\n");
> - np->remote_port = simple_strtol(cur, NULL, 10);
> + rc = kstrtol(cur, 10, &np->remote_port);
> + if (rc)
> + goto parse_failed;
> cur = delim;
Ditto
> }
> cur++;
> diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
> index fe5daea..55e7b73 100644
> --- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
> +++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
> @@ -661,6 +661,7 @@ static ssize_t clusterip_proc_write(struct file *file, const char __user *input,
> #define PROC_WRITELEN 10
> char buffer[PROC_WRITELEN+1];
> unsigned long nodenum;
> + int rc;
>
> if (size > PROC_WRITELEN)
> return -EIO;
> @@ -669,11 +670,15 @@ static ssize_t clusterip_proc_write(struct file *file, const char __user *input,
> buffer[size] = 0;
>
> if (*buffer == '+') {
> - nodenum = simple_strtoul(buffer+1, NULL, 10);
> + rc = kstrtoul(buffer+1, 10, &nodenum);
> + if (rc)
> + return -EINVAL;
> if (clusterip_add_node(c, nodenum))
> return -ENOMEM;
> } else if (*buffer == '-') {
> - nodenum = simple_strtoul(buffer+1, NULL,10);
> + rc = kstrtoul(buffer+1, 10, &nodenum);
> + if (rc)
> + return -EINVAL;
> if (clusterip_del_node(c, nodenum))
> return -ENOENT;
Same deal with the rc variable, although in this case it might make sense to
return rc if kstrtoul fails, instead of just filtering it all down to -EINVAL.
> } else
> diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
> index 89281d2..18754fd 100644
> --- a/net/mac80211/debugfs_sta.c
> +++ b/net/mac80211/debugfs_sta.c
> @@ -219,7 +219,9 @@ static ssize_t sta_agg_status_write(struct file *file, const char __user *userbu
> } else
> return -EINVAL;
>
> - tid = simple_strtoul(buf, NULL, 0);
> + ret = kstrtoul(buf, 0, &tid);
> + if (ret)
> + return -EINVAL;
>
> if (tid >= IEEE80211_NUM_TIDS)
> return -EINVAL;
> diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
> index af17516..18ce24b 100644
> --- a/net/netfilter/nf_conntrack_core.c
> +++ b/net/netfilter/nf_conntrack_core.c
> @@ -1409,7 +1409,7 @@ EXPORT_SYMBOL_GPL(nf_ct_alloc_hashtable);
>
> int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp)
> {
> - int i, bucket;
> + int i, bucket, rc;
> unsigned int hashsize, old_size;
> struct hlist_nulls_head *hash, *old_hash;
> struct nf_conntrack_tuple_hash *h;
> @@ -1422,7 +1422,9 @@ int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp)
> if (!nf_conntrack_htable_size)
> return param_set_uint(val, kp);
>
> - hashsize = simple_strtoul(val, NULL, 0);
> + rc = kstrtouint(val, 0, &hashsize);
> + if (rc)
> + return -EINVAL;
> if (!hashsize)
> return -EINVAL;
>
As above, these call points might benefit from returning rc rather than just
EINVAL.
Neil
> --
> 1.7.7.6
>
>
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