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Date: Sun, 29 Jul 2012 14:09:46 +0200
From: walter harms <wharms@....de>
To: Fengguang Wu <fengguang.wu@...el.com>
CC: Pablo Neira Ayuso <pablo@...filter.org>,
netfilter-devel@...r.kernel.org, kernel-janitors@...r.kernel.org,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] netfilter: PTR_RET can be used
Am 29.07.2012 02:45, schrieb Fengguang Wu:
> This quiets the coccinelle warnings:
>
> net/bridge/netfilter/ebtable_filter.c:107:1-3: WARNING: PTR_RET can be used
> net/bridge/netfilter/ebtable_nat.c:107:1-3: WARNING: PTR_RET can be used
> net/ipv6/netfilter/ip6table_filter.c:65:1-3: WARNING: PTR_RET can be used
> net/ipv6/netfilter/ip6table_mangle.c:100:1-3: WARNING: PTR_RET can be used
> net/ipv6/netfilter/ip6table_raw.c:44:1-3: WARNING: PTR_RET can be used
> net/ipv6/netfilter/ip6table_security.c:62:1-3: WARNING: PTR_RET can be used
> net/ipv4/netfilter/iptable_filter.c:72:1-3: WARNING: PTR_RET can be used
> net/ipv4/netfilter/iptable_mangle.c:107:1-3: WARNING: PTR_RET can be used
> net/ipv4/netfilter/iptable_raw.c:51:1-3: WARNING: PTR_RET can be used
> net/ipv4/netfilter/iptable_security.c:70:1-3: WARNING: PTR_RET can be used
>
> Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
> ---
> net/bridge/netfilter/ebtable_filter.c | 4 +---
> net/bridge/netfilter/ebtable_nat.c | 4 +---
> net/ipv4/netfilter/iptable_filter.c | 4 +---
> net/ipv4/netfilter/iptable_mangle.c | 4 +---
> net/ipv4/netfilter/iptable_raw.c | 4 +---
> net/ipv4/netfilter/iptable_security.c | 5 +----
> net/ipv6/netfilter/ip6table_filter.c | 4 +---
> net/ipv6/netfilter/ip6table_mangle.c | 4 +---
> net/ipv6/netfilter/ip6table_raw.c | 4 +---
> net/ipv6/netfilter/ip6table_security.c | 5 +----
> 10 files changed, 10 insertions(+), 32 deletions(-)
>
> --- linux.orig/net/bridge/netfilter/ebtable_filter.c 2012-07-29 08:41:09.703759534 +0800
> +++ linux/net/bridge/netfilter/ebtable_filter.c 2012-07-29 08:41:14.255759643 +0800
> @@ -100,9 +100,7 @@ static struct nf_hook_ops ebt_ops_filter
> static int __net_init frame_filter_net_init(struct net *net)
> {
> net->xt.frame_filter = ebt_register_table(net, &frame_filter);
> - if (IS_ERR(net->xt.frame_filter))
> - return PTR_ERR(net->xt.frame_filter);
> - return 0;
> + return PTR_RET(net->xt.frame_filter);
> }
>
i do not understand this,
ebt_register_table() return (struct ebt_table *) on success
Does PTR_RET really return 0 if this is a propper pointer ?
re,
wh
> static void __net_exit frame_filter_net_exit(struct net *net)
> --- linux.orig/net/bridge/netfilter/ebtable_nat.c 2012-07-29 08:41:09.671759534 +0800
> +++ linux/net/bridge/netfilter/ebtable_nat.c 2012-07-29 08:41:14.255759643 +0800
> @@ -100,9 +100,7 @@ static struct nf_hook_ops ebt_ops_nat[]
> static int __net_init frame_nat_net_init(struct net *net)
> {
> net->xt.frame_nat = ebt_register_table(net, &frame_nat);
> - if (IS_ERR(net->xt.frame_nat))
> - return PTR_ERR(net->xt.frame_nat);
> - return 0;
> + return PTR_RET(net->xt.frame_nat);
> }
>
> static void __net_exit frame_nat_net_exit(struct net *net)
> --- linux.orig/net/ipv4/netfilter/iptable_filter.c 2012-07-29 08:41:09.523759531 +0800
> +++ linux/net/ipv4/netfilter/iptable_filter.c 2012-07-29 08:41:14.259759643 +0800
> @@ -69,9 +69,7 @@ static int __net_init iptable_filter_net
> net->ipv4.iptable_filter =
> ipt_register_table(net, &packet_filter, repl);
> kfree(repl);
> - if (IS_ERR(net->ipv4.iptable_filter))
> - return PTR_ERR(net->ipv4.iptable_filter);
> - return 0;
> + return PTR_RET(net->ipv4.iptable_filter);
> }
>
> static void __net_exit iptable_filter_net_exit(struct net *net)
> --- linux.orig/net/ipv4/netfilter/iptable_mangle.c 2012-07-29 08:41:09.495759530 +0800
> +++ linux/net/ipv4/netfilter/iptable_mangle.c 2012-07-29 08:41:14.259759643 +0800
> @@ -104,9 +104,7 @@ static int __net_init iptable_mangle_net
> net->ipv4.iptable_mangle =
> ipt_register_table(net, &packet_mangler, repl);
> kfree(repl);
> - if (IS_ERR(net->ipv4.iptable_mangle))
> - return PTR_ERR(net->ipv4.iptable_mangle);
> - return 0;
> + return PTR_RET(net->ipv4.iptable_mangle);
> }
>
> static void __net_exit iptable_mangle_net_exit(struct net *net)
> --- linux.orig/net/ipv4/netfilter/iptable_raw.c 2012-07-29 08:41:09.467759529 +0800
> +++ linux/net/ipv4/netfilter/iptable_raw.c 2012-07-29 08:41:14.259759643 +0800
> @@ -48,9 +48,7 @@ static int __net_init iptable_raw_net_in
> net->ipv4.iptable_raw =
> ipt_register_table(net, &packet_raw, repl);
> kfree(repl);
> - if (IS_ERR(net->ipv4.iptable_raw))
> - return PTR_ERR(net->ipv4.iptable_raw);
> - return 0;
> + return PTR_RET(net->ipv4.iptable_raw);
> }
>
> static void __net_exit iptable_raw_net_exit(struct net *net)
> --- linux.orig/net/ipv4/netfilter/iptable_security.c 2012-07-29 08:41:09.439759529 +0800
> +++ linux/net/ipv4/netfilter/iptable_security.c 2012-07-29 08:41:14.259759643 +0800
> @@ -66,10 +66,7 @@ static int __net_init iptable_security_n
> net->ipv4.iptable_security =
> ipt_register_table(net, &security_table, repl);
> kfree(repl);
> - if (IS_ERR(net->ipv4.iptable_security))
> - return PTR_ERR(net->ipv4.iptable_security);
> -
> - return 0;
> + return PTR_RET(net->ipv4.iptable_security);
> }
>
> static void __net_exit iptable_security_net_exit(struct net *net)
> --- linux.orig/net/ipv6/netfilter/ip6table_filter.c 2012-07-29 08:41:09.643759533 +0800
> +++ linux/net/ipv6/netfilter/ip6table_filter.c 2012-07-29 08:41:14.259759643 +0800
> @@ -61,9 +61,7 @@ static int __net_init ip6table_filter_ne
> net->ipv6.ip6table_filter =
> ip6t_register_table(net, &packet_filter, repl);
> kfree(repl);
> - if (IS_ERR(net->ipv6.ip6table_filter))
> - return PTR_ERR(net->ipv6.ip6table_filter);
> - return 0;
> + return PTR_RET(net->ipv6.ip6table_filter);
> }
>
> static void __net_exit ip6table_filter_net_exit(struct net *net)
> --- linux.orig/net/ipv6/netfilter/ip6table_mangle.c 2012-07-29 08:41:09.615759532 +0800
> +++ linux/net/ipv6/netfilter/ip6table_mangle.c 2012-07-29 08:41:14.259759643 +0800
> @@ -97,9 +97,7 @@ static int __net_init ip6table_mangle_ne
> net->ipv6.ip6table_mangle =
> ip6t_register_table(net, &packet_mangler, repl);
> kfree(repl);
> - if (IS_ERR(net->ipv6.ip6table_mangle))
> - return PTR_ERR(net->ipv6.ip6table_mangle);
> - return 0;
> + return PTR_RET(net->ipv6.ip6table_mangle);
> }
>
> static void __net_exit ip6table_mangle_net_exit(struct net *net)
> --- linux.orig/net/ipv6/netfilter/ip6table_raw.c 2012-07-29 08:41:09.583759532 +0800
> +++ linux/net/ipv6/netfilter/ip6table_raw.c 2012-07-29 08:41:14.259759643 +0800
> @@ -40,9 +40,7 @@ static int __net_init ip6table_raw_net_i
> net->ipv6.ip6table_raw =
> ip6t_register_table(net, &packet_raw, repl);
> kfree(repl);
> - if (IS_ERR(net->ipv6.ip6table_raw))
> - return PTR_ERR(net->ipv6.ip6table_raw);
> - return 0;
> + return PTR_RET(net->ipv6.ip6table_raw);
> }
>
> static void __net_exit ip6table_raw_net_exit(struct net *net)
> --- linux.orig/net/ipv6/netfilter/ip6table_security.c 2012-07-29 08:41:09.555759531 +0800
> +++ linux/net/ipv6/netfilter/ip6table_security.c 2012-07-29 08:41:14.259759643 +0800
> @@ -58,10 +58,7 @@ static int __net_init ip6table_security_
> net->ipv6.ip6table_security =
> ip6t_register_table(net, &security_table, repl);
> kfree(repl);
> - if (IS_ERR(net->ipv6.ip6table_security))
> - return PTR_ERR(net->ipv6.ip6table_security);
> -
> - return 0;
> + return PTR_RET(net->ipv6.ip6table_security);
> }
>
> static void __net_exit ip6table_security_net_exit(struct net *net)
> --
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