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authorEric W. Biederman <ebiederm@xmission.com>2012-09-07 20:12:54 +0000
committerDavid S. Miller <davem@davemloft.net>2012-09-10 15:30:41 -0400
commit15e473046cb6e5d18a4d0057e61d76315230382b (patch)
tree893d2df5d46a6ce156933ac57a1398f0ad22b889 /kernel/audit.c
parent9f00d9776bc5beb92e8bfc884a7e96ddc5589e2e (diff)
downloadlinaro-lsk-15e473046cb6e5d18a4d0057e61d76315230382b.tar.gz
netlink: Rename pid to portid to avoid confusion
It is a frequent mistake to confuse the netlink port identifier with a process identifier. Try to reduce this confusion by renaming fields that hold port identifiers portid instead of pid. I have carefully avoided changing the structures exported to userspace to avoid changing the userspace API. I have successfully built an allyesconfig kernel with this change. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/audit.c')
-rw-r--r--kernel/audit.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/kernel/audit.c b/kernel/audit.c
index a24aafa850a..e0cf64a0ae2 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -87,11 +87,11 @@ static int audit_failure = AUDIT_FAIL_PRINTK;
/*
* If audit records are to be written to the netlink socket, audit_pid
- * contains the pid of the auditd process and audit_nlk_pid contains
- * the pid to use to send netlink messages to that process.
+ * contains the pid of the auditd process and audit_nlk_portid contains
+ * the portid to use to send netlink messages to that process.
*/
int audit_pid;
-static int audit_nlk_pid;
+static int audit_nlk_portid;
/* If audit_rate_limit is non-zero, limit the rate of sending audit records
* to that number per second. This prevents DoS attacks, but results in
@@ -401,7 +401,7 @@ static void kauditd_send_skb(struct sk_buff *skb)
int err;
/* take a reference in case we can't send it and we want to hold it */
skb_get(skb);
- err = netlink_unicast(audit_sock, skb, audit_nlk_pid, 0);
+ err = netlink_unicast(audit_sock, skb, audit_nlk_portid, 0);
if (err < 0) {
BUG_ON(err != -ECONNREFUSED); /* Shouldn't happen */
printk(KERN_ERR "audit: *NO* daemon at audit_pid=%d\n", audit_pid);
@@ -692,7 +692,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
status_set.backlog_limit = audit_backlog_limit;
status_set.lost = atomic_read(&audit_lost);
status_set.backlog = skb_queue_len(&audit_skb_queue);
- audit_send_reply(NETLINK_CB(skb).pid, seq, AUDIT_GET, 0, 0,
+ audit_send_reply(NETLINK_CB(skb).portid, seq, AUDIT_GET, 0, 0,
&status_set, sizeof(status_set));
break;
case AUDIT_SET:
@@ -720,7 +720,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
sessionid, sid, 1);
audit_pid = new_pid;
- audit_nlk_pid = NETLINK_CB(skb).pid;
+ audit_nlk_portid = NETLINK_CB(skb).portid;
}
if (status_get->mask & AUDIT_STATUS_RATE_LIMIT) {
err = audit_set_rate_limit(status_get->rate_limit,
@@ -782,7 +782,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
}
/* fallthrough */
case AUDIT_LIST:
- err = audit_receive_filter(msg_type, NETLINK_CB(skb).pid,
+ err = audit_receive_filter(msg_type, NETLINK_CB(skb).portid,
uid, seq, data, nlmsg_len(nlh),
loginuid, sessionid, sid);
break;
@@ -801,7 +801,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
}
/* fallthrough */
case AUDIT_LIST_RULES:
- err = audit_receive_filter(msg_type, NETLINK_CB(skb).pid,
+ err = audit_receive_filter(msg_type, NETLINK_CB(skb).portid,
uid, seq, data, nlmsg_len(nlh),
loginuid, sessionid, sid);
break;
@@ -872,7 +872,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
memcpy(sig_data->ctx, ctx, len);
security_release_secctx(ctx, len);
}
- audit_send_reply(NETLINK_CB(skb).pid, seq, AUDIT_SIGNAL_INFO,
+ audit_send_reply(NETLINK_CB(skb).portid, seq, AUDIT_SIGNAL_INFO,
0, 0, sig_data, sizeof(*sig_data) + len);
kfree(sig_data);
break;
@@ -891,7 +891,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
rcu_read_unlock();
if (!err)
- audit_send_reply(NETLINK_CB(skb).pid, seq,
+ audit_send_reply(NETLINK_CB(skb).portid, seq,
AUDIT_TTY_GET, 0, 0, &s, sizeof(s));
break;
}