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SubjectRe: [PATCH] security: Use IS_ENABLED() instead of checking for built-in or module
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On 7/14/2016 9:00 AM, Javier Martinez Canillas wrote:
> The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either
> built-in or as a module, use that macro instead of open coding the same.

Why?

>
> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
> ---
>
> security/lsm_audit.c | 2 +-
> security/selinux/hooks.c | 12 ++++++------
> security/smack/smack_netfilter.c | 4 ++--
> 3 files changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/security/lsm_audit.c b/security/lsm_audit.c
> index cccbf3068cdc..5369036cf905 100644
> --- a/security/lsm_audit.c
> +++ b/security/lsm_audit.c
> @@ -99,7 +99,7 @@ int ipv4_skb_to_auditdata(struct sk_buff *skb,
> }
> return ret;
> }
> -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
> +#if IS_ENABLED(CONFIG_IPV6)
> /**
> * ipv6_skb_to_auditdata : fill auditdata from skb
> * @skb : the skb
> diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
> index ec30880c4b98..c20ea9fe9274 100644
> --- a/security/selinux/hooks.c
> +++ b/security/selinux/hooks.c
> @@ -3984,7 +3984,7 @@ out:
> return ret;
> }
>
> -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
> +#if IS_ENABLED(CONFIG_IPV6)
>
> /* Returns error only if unable to parse addresses */
> static int selinux_parse_skb_ipv6(struct sk_buff *skb,
> @@ -4075,7 +4075,7 @@ static int selinux_parse_skb(struct sk_buff *skb, struct common_audit_data *ad,
> &ad->u.net->v4info.daddr);
> goto okay;
>
> -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
> +#if IS_ENABLED(CONFIG_IPV6)
> case PF_INET6:
> ret = selinux_parse_skb_ipv6(skb, ad, proto);
> if (ret)
> @@ -5029,7 +5029,7 @@ static unsigned int selinux_ipv4_forward(void *priv,
> return selinux_ip_forward(skb, state->in, PF_INET);
> }
>
> -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
> +#if IS_ENABLED(CONFIG_IPV6)
> static unsigned int selinux_ipv6_forward(void *priv,
> struct sk_buff *skb,
> const struct nf_hook_state *state)
> @@ -5087,7 +5087,7 @@ static unsigned int selinux_ipv4_output(void *priv,
> return selinux_ip_output(skb, PF_INET);
> }
>
> -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
> +#if IS_ENABLED(CONFIG_IPV6)
> static unsigned int selinux_ipv6_output(void *priv,
> struct sk_buff *skb,
> const struct nf_hook_state *state)
> @@ -5273,7 +5273,7 @@ static unsigned int selinux_ipv4_postroute(void *priv,
> return selinux_ip_postroute(skb, state->out, PF_INET);
> }
>
> -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
> +#if IS_ENABLED(CONFIG_IPV6)
> static unsigned int selinux_ipv6_postroute(void *priv,
> struct sk_buff *skb,
> const struct nf_hook_state *state)
> @@ -6317,7 +6317,7 @@ static struct nf_hook_ops selinux_nf_ops[] = {
> .hooknum = NF_INET_LOCAL_OUT,
> .priority = NF_IP_PRI_SELINUX_FIRST,
> },
> -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
> +#if IS_ENABLED(CONFIG_IPV6)
> {
> .hook = selinux_ipv6_postroute,
> .pf = NFPROTO_IPV6,
> diff --git a/security/smack/smack_netfilter.c b/security/smack/smack_netfilter.c
> index aa6bf1b22ec5..205b785fb400 100644
> --- a/security/smack/smack_netfilter.c
> +++ b/security/smack/smack_netfilter.c
> @@ -20,7 +20,7 @@
> #include <net/inet_sock.h>
> #include "smack.h"
>
> -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
> +#if IS_ENABLED(CONFIG_IPV6)
>
> static unsigned int smack_ipv6_output(void *priv,
> struct sk_buff *skb,
> @@ -64,7 +64,7 @@ static struct nf_hook_ops smack_nf_ops[] = {
> .hooknum = NF_INET_LOCAL_OUT,
> .priority = NF_IP_PRI_SELINUX_FIRST,
> },
> -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
> +#if IS_ENABLED(CONFIG_IPV6)
> {
> .hook = smack_ipv6_output,
> .pf = NFPROTO_IPV6,

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