Re: [PATCH v2 1/5] staging: lustre: llite: add support set_acl method in inode operations

[Dan Carpenter <dan.carpenter@oracle.com>]

On Mon, May 14, 2018 at 10:16:59PM -0400, James Simmons wrote:
> +#ifdef CONFIG_FS_POSIX_ACL
>  struct posix_acl *ll_get_acl(struct inode *inode, int type)
>  {
>  	struct ll_inode_info *lli = ll_i2info(inode);
> @@ -3043,6 +3044,64 @@ struct posix_acl *ll_get_acl(struct inode *inode, int type)
>  	return acl;
>  }
>  
> +int ll_set_acl(struct inode *inode, struct posix_acl *acl, int type)
> +{
> +	struct ll_sb_info *sbi = ll_i2sbi(inode);
> +	struct ptlrpc_request *req = NULL;
> +	const char *name = NULL;
> +	size_t value_size = 0;
> +	char *value = NULL;
> +	int rc;

"rc" needs to be initialized to zero.  It's disapppointing that GCC
doesn't catch this.

> +
> +	switch (type) {
> +	case ACL_TYPE_ACCESS:
> +		name = XATTR_NAME_POSIX_ACL_ACCESS;
> +		if (acl)
> +			rc = posix_acl_update_mode(inode, &inode->i_mode, &acl);
> +		break;
> +
> +	case ACL_TYPE_DEFAULT:
> +		name = XATTR_NAME_POSIX_ACL_DEFAULT;
> +		if (!S_ISDIR(inode->i_mode))
> +			rc = acl ? -EACCES : 0;
> +		break;
> +
> +	default:
> +		rc = -EINVAL;
> +		break;
> +	}
> +	if (rc)
> +		return rc;

Otherwise rc can be uninitialized here.

regards,
dan carpenter

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