[v2,9/9] selinux: avoid implicit conversion in nlmsgtab code

Message ID 20230728155501.39632-8-cgzones@googlemail.com
State New
Headers
Series [v2,1/9] selinux: avoid implicit conversions in avtab code |

Commit Message

Christian Göttsche July 28, 2023, 3:54 p.m. UTC
  Use an unsigned type as loop iterator.

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
---
v2: avoid declarations in init-clauses of for loops
---
 security/selinux/nlmsgtab.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
  

Comments

Paul Moore Aug. 4, 2023, 2:20 a.m. UTC | #1
On Jul 28, 2023 =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com> wrote:
> 
> Use an unsigned type as loop iterator.
> 
> Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
> ---
> v2: avoid declarations in init-clauses of for loops
> ---
>  security/selinux/nlmsgtab.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/security/selinux/nlmsgtab.c b/security/selinux/nlmsgtab.c
> index 2ee7b4ed43ef..2f8fab949633 100644
> --- a/security/selinux/nlmsgtab.c
> +++ b/security/selinux/nlmsgtab.c
> @@ -153,7 +153,8 @@ static const struct nlmsg_perm nlmsg_audit_perms[] = {
>  
>  static int nlmsg_perm(u16 nlmsg_type, u32 *perm, const struct nlmsg_perm *tab, size_t tabsize)
>  {
> -	int i, err = -EINVAL;
> +	u32 i;
> +	int err = -EINVAL;

I understand wanting to make 'i' unsigned, but I think unsigned int
is a better fit for an iterator and array index.

>  	for (i = 0; i < tabsize/sizeof(struct nlmsg_perm); i++)
>  		if (nlmsg_type == tab[i].nlmsg_type) {
> -- 
> 2.40.1

--
paul-moore.com
  

Patch

diff --git a/security/selinux/nlmsgtab.c b/security/selinux/nlmsgtab.c
index 2ee7b4ed43ef..2f8fab949633 100644
--- a/security/selinux/nlmsgtab.c
+++ b/security/selinux/nlmsgtab.c
@@ -153,7 +153,8 @@  static const struct nlmsg_perm nlmsg_audit_perms[] = {
 
 static int nlmsg_perm(u16 nlmsg_type, u32 *perm, const struct nlmsg_perm *tab, size_t tabsize)
 {
-	int i, err = -EINVAL;
+	u32 i;
+	int err = -EINVAL;
 
 	for (i = 0; i < tabsize/sizeof(struct nlmsg_perm); i++)
 		if (nlmsg_type == tab[i].nlmsg_type) {