From: "J. Bruce Fields" <bfields@redhat.com>
To: linux-nfs@vger.kernel.org
Cc: "J. Bruce Fields" <bfields@redhat.com>
Subject: [PATCH 02/14] svcrpc: clean up control flow
Date: Tue, 21 Aug 2012 16:57:20 -0400 [thread overview]
Message-ID: <1345582652-18476-3-git-send-email-bfields@redhat.com> (raw)
In-Reply-To: <1345582652-18476-1-git-send-email-bfields@redhat.com>
From: "J. Bruce Fields" <bfields@redhat.com>
Mainly, use the kernel standard
err = -ERROR;
if (something_bad)
goto out;
normal case;
rather than
if (something_bad)
err = -ERROR
else {
normal case;
}
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
net/sunrpc/svcsock.c | 69 +++++++++++++++++++++++++-------------------------
1 file changed, 34 insertions(+), 35 deletions(-)
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index d028b51..bf10b72 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -1451,44 +1451,42 @@ int svc_addsock(struct svc_serv *serv, const int fd, char *name_return,
int err = 0;
struct socket *so = sockfd_lookup(fd, &err);
struct svc_sock *svsk = NULL;
+ struct sockaddr_storage addr;
+ struct sockaddr *sin = (struct sockaddr *)&addr;
+ int salen;
if (!so)
return err;
+ err = -EAFNOSUPPORT;
if ((so->sk->sk_family != PF_INET) && (so->sk->sk_family != PF_INET6))
- err = -EAFNOSUPPORT;
- else if (so->sk->sk_protocol != IPPROTO_TCP &&
+ goto out;
+ err = -EPROTONOSUPPORT;
+ if (so->sk->sk_protocol != IPPROTO_TCP &&
so->sk->sk_protocol != IPPROTO_UDP)
- err = -EPROTONOSUPPORT;
- else if (so->state > SS_UNCONNECTED)
- err = -EISCONN;
- else {
- if (!try_module_get(THIS_MODULE))
- err = -ENOENT;
- else {
- svsk = svc_setup_socket(serv, so, SVC_SOCK_DEFAULTS);
- if (IS_ERR(svsk))
- err = PTR_ERR(svsk);
- }
- if (err == 0) {
- struct sockaddr_storage addr;
- struct sockaddr *sin = (struct sockaddr *)&addr;
- int salen;
- if (kernel_getsockname(svsk->sk_sock, sin, &salen) == 0)
- svc_xprt_set_local(&svsk->sk_xprt, sin, salen);
- clear_bit(XPT_TEMP, &svsk->sk_xprt.xpt_flags);
- spin_lock_bh(&serv->sv_lock);
- list_add(&svsk->sk_xprt.xpt_list, &serv->sv_permsocks);
- spin_unlock_bh(&serv->sv_lock);
- svc_xprt_received(&svsk->sk_xprt);
- err = 0;
- } else
- module_put(THIS_MODULE);
- }
- if (err) {
- sockfd_put(so);
- return err;
+ goto out;
+ err = -EISCONN;
+ if (so->state > SS_UNCONNECTED)
+ goto out;
+ err = -ENOENT;
+ if (!try_module_get(THIS_MODULE))
+ goto out;
+ svsk = svc_setup_socket(serv, so, SVC_SOCK_DEFAULTS);
+ if (IS_ERR(svsk)) {
+ module_put(THIS_MODULE);
+ err = PTR_ERR(svsk);
+ goto out;
}
+ if (kernel_getsockname(svsk->sk_sock, sin, &salen) == 0)
+ svc_xprt_set_local(&svsk->sk_xprt, sin, salen);
+ clear_bit(XPT_TEMP, &svsk->sk_xprt.xpt_flags);
+ spin_lock_bh(&serv->sv_lock);
+ list_add(&svsk->sk_xprt.xpt_list, &serv->sv_permsocks);
+ spin_unlock_bh(&serv->sv_lock);
+ svc_xprt_received(&svsk->sk_xprt);
return svc_one_sock_name(svsk, name_return, len);
+out:
+ sockfd_put(so);
+ return err;
}
EXPORT_SYMBOL_GPL(svc_addsock);
@@ -1567,11 +1565,12 @@ static struct svc_xprt *svc_create_socket(struct svc_serv *serv,
}
svsk = svc_setup_socket(serv, sock, flags);
- if (!IS_ERR(svsk)) {
- svc_xprt_set_local(&svsk->sk_xprt, newsin, newlen);
- return (struct svc_xprt *)svsk;
+ if (IS_ERR(svsk)) {
+ error = PTR_ERR(svsk);
+ goto bummer;
}
- error = PTR_ERR(svsk);
+ svc_xprt_set_local(&svsk->sk_xprt, newsin, newlen);
+ return (struct svc_xprt *)svsk;
bummer:
dprintk("svc: svc_create_socket error = %d\n", -error);
sock_release(sock);
--
1.7.9.5
next prev parent reply other threads:[~2012-08-21 20:57 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-21 20:57 nfsd & svcrpc patches (mainly cleanup) for 3.7 J. Bruce Fields
2012-08-21 20:57 ` [PATCH 01/14] svcrpc: standardize svc_setup_socket return convention J. Bruce Fields
2012-08-21 20:57 ` J. Bruce Fields [this message]
2012-08-21 20:57 ` [PATCH 03/14] svcrpc: make svc_create_xprt enqueue on clearing XPT_BUSY J. Bruce Fields
2012-08-21 20:57 ` [PATCH 04/14] svcrpc: share some setup of listening sockets J. Bruce Fields
2012-08-21 20:57 ` [PATCH 05/14] nfsd: remove redundant "port" argument J. Bruce Fields
2012-08-21 20:57 ` [PATCH 06/14] nfsd: allow configuring nfsd to listen on 5-digit ports J. Bruce Fields
2012-08-21 21:25 ` J. Bruce Fields
2012-08-21 20:57 ` [PATCH 07/14] svcrpc: minor udp code cleanup J. Bruce Fields
2012-08-21 20:57 ` [PATCH 08/14] svcrpc: ignore unknown address type in udp receive J. Bruce Fields
2012-08-21 21:02 ` Chuck Lever
2012-08-21 21:24 ` J. Bruce Fields
2012-08-21 21:29 ` Chuck Lever
2012-08-21 21:33 ` J. Bruce Fields
2012-08-21 21:38 ` Chuck Lever
2012-08-21 21:42 ` J. Bruce Fields
2012-08-21 20:57 ` [PATCH 09/14] svcrpc: make xpo_recvfrom return only >=0 J. Bruce Fields
2012-08-21 20:57 ` [PATCH 10/14] svcrpc: remove handling of unknown errors from svc_recv J. Bruce Fields
2012-08-21 20:57 ` [PATCH 11/14] svcrpc: make svc_xprt_received static J. Bruce Fields
2012-08-21 20:57 ` [PATCH 12/14] svcrpc: break up svc_recv J. Bruce Fields
2012-08-21 20:57 ` [PATCH 13/14] svcrpc: split up svc_handle_xprt J. Bruce Fields
2012-08-21 20:57 ` [PATCH 14/14] nfsd: document kernel interfaces for nfsd configuration J. Bruce Fields
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