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selinux: refactor code to return ERR_PTR in selinux_netlbl_sock_genattr

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Refactor the code in selinux_netlbl_sock_genattr to return ERR_PTR
when an error occurs.

Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Gaosheng Cui 2024-07-12 09:45:34 +08:00 committed by Paul Moore
parent da2d41308c
commit fc328c869c
1 changed files with 9 additions and 9 deletions
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18
security/selinux/netlabel.c
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@ -62,7 +62,7 @@ static int selinux_netlbl_sidlookup_cached(struct sk_buff *skb,
* Description:
* Generate the NetLabel security attributes for a socket, making full use of
* the socket's attribute cache. Returns a pointer to the security attributes
* on success, NULL on failure.
* on success, or an ERR_PTR on failure.
*
*/
static struct netlbl_lsm_secattr *selinux_netlbl_sock_genattr(struct sock *sk)
@ -76,11 +76,12 @@ static struct netlbl_lsm_secattr *selinux_netlbl_sock_genattr(struct sock *sk)
secattr = netlbl_secattr_alloc(GFP_ATOMIC);
if (secattr == NULL)
return NULL;
return ERR_PTR(-ENOMEM);
rc = security_netlbl_sid_to_secattr(sksec->sid, secattr);
if (rc != 0) {
netlbl_secattr_free(secattr);
return NULL;
return ERR_PTR(rc);
}
sksec->nlbl_secattr = secattr;
@ -400,8 +401,8 @@ int selinux_netlbl_socket_post_create(struct sock *sk, u16 family)
return 0;
secattr = selinux_netlbl_sock_genattr(sk);
if (secattr == NULL)
return -ENOMEM;
if (IS_ERR(secattr))
return PTR_ERR(secattr);
/* On socket creation, replacement of IP options is safe even if
* the caller does not hold the socket lock.
*/
@ -561,10 +562,9 @@ static int selinux_netlbl_socket_connect_helper(struct sock *sk,
return rc;
}
secattr = selinux_netlbl_sock_genattr(sk);
if (secattr == NULL) {
rc = -ENOMEM;
return rc;
}
if (IS_ERR(secattr))
return PTR_ERR(secattr);
rc = netlbl_conn_setattr(sk, addr, secattr);
if (rc == 0)
sksec->nlbl_state = NLBL_CONNLABELED;