From b5e5fa5e093e42cab4ee3d6dcbc4f450ad29a723 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Tue, 3 Jan 2006 14:18:33 -0800
Subject: [PATCH] [NET]: Add a dev_ioctl() fallback to sock_ioctl()
Currently all network protocols need to call dev_ioctl as the default
fallback in their ioctl implementations. This patch adds a fallback
to dev_ioctl to sock_ioctl if the protocol returned -ENOIOCTLCMD.
This way all the procotol ioctl handlers can be simplified and we don't
need to export dev_ioctl.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/appletalk/ddp.c | 19 +------------------
net/ax25/af_ax25.c | 2 +-
net/core/dev.c | 1 -
net/decnet/af_decnet.c | 2 +-
net/econet/af_econet.c | 2 +-
net/ipv4/af_inet.c | 8 ++++----
net/ipv6/af_inet6.c | 8 +++-----
net/ipx/af_ipx.c | 2 +-
net/irda/af_irda.c | 2 +-
net/llc/af_llc.c | 2 +-
net/netrom/af_netrom.c | 2 +-
net/packet/af_packet.c | 2 +-
net/rose/af_rose.c | 2 +-
net/socket.c | 7 +++++++
net/unix/af_unix.c | 2 +-
net/wanrouter/af_wanpipe.c | 2 +-
net/x25/af_x25.c | 2 +-
17 files changed, 27 insertions(+), 40 deletions(-)
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 296f186802ff..a5144e43aae1 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1763,7 +1763,7 @@ static int atalk_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr
*/
static int atalk_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
- int rc = -EINVAL;
+ int rc = -ENOIOCTLCMD;
struct sock *sk = sock->sk;
void __user *argp = (void __user *)arg;
@@ -1813,23 +1813,6 @@ static int atalk_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
rc = atif_ioctl(cmd, argp);
rtnl_unlock();
break;
- /* Physical layer ioctl calls */
- case SIOCSIFLINK:
- case SIOCGIFHWADDR:
- case SIOCSIFHWADDR:
- case SIOCGIFFLAGS:
- case SIOCSIFFLAGS:
- case SIOCGIFTXQLEN:
- case SIOCSIFTXQLEN:
- case SIOCGIFMTU:
- case SIOCGIFCONF:
- case SIOCADDMULTI:
- case SIOCDELMULTI:
- case SIOCGIFCOUNT:
- case SIOCGIFINDEX:
- case SIOCGIFNAME:
- rc = dev_ioctl(cmd, argp);
- break;
}
return rc;
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 8b5d10aaba05..e8753c7fcad1 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1827,7 +1827,7 @@ static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
break;
default:
- res = dev_ioctl(cmd, argp);
+ res = -ENOIOCTLCMD;
break;
}
release_sock(sk);
diff --git a/net/core/dev.c b/net/core/dev.c
index a5efc9ae010b..29ba109d3e54 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3276,7 +3276,6 @@ EXPORT_SYMBOL(dev_close);
EXPORT_SYMBOL(dev_get_by_flags);
EXPORT_SYMBOL(dev_get_by_index);
EXPORT_SYMBOL(dev_get_by_name);
-EXPORT_SYMBOL(dev_ioctl);
EXPORT_SYMBOL(dev_open);
EXPORT_SYMBOL(dev_queue_xmit);
EXPORT_SYMBOL(dev_remove_pack);
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index 65e3baed0251..78ec5344be86 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -1252,7 +1252,7 @@ static int dn_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
break;
default:
- err = dev_ioctl(cmd, (void __user *)arg);
+ err = -ENOIOCTLCMD;
break;
}
diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c
index 70fb2b88da65..4fc245243cca 100644
--- a/net/econet/af_econet.c
+++ b/net/econet/af_econet.c
@@ -687,7 +687,7 @@ static int econet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg
break;
default:
- return dev_ioctl(cmd, argp);
+ return -ENOIOCTLCMD;
}
/*NOTREACHED*/
return 0;
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 36a6306ca5a3..966a071a408c 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -777,10 +777,10 @@ int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
err = devinet_ioctl(cmd, (void __user *)arg);
break;
default:
- if (!sk->sk_prot->ioctl ||
- (err = sk->sk_prot->ioctl(sk, cmd, arg)) ==
- -ENOIOCTLCMD)
- err = dev_ioctl(cmd, (void __user *)arg);
+ if (sk->sk_prot->ioctl)
+ err = sk->sk_prot->ioctl(sk, cmd, arg);
+ else
+ err = -ENOIOCTLCMD;
break;
}
return err;
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 7c9f19269f21..68afc53be662 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -434,7 +434,6 @@ int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
- int err = -EINVAL;
switch(cmd)
{
@@ -453,10 +452,9 @@ int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
case SIOCSIFDSTADDR:
return addrconf_set_dstaddr((void __user *) arg);
default:
- if (!sk->sk_prot->ioctl ||
- (err = sk->sk_prot->ioctl(sk, cmd, arg)) == -ENOIOCTLCMD)
- return(dev_ioctl(cmd,(void __user *) arg));
- return err;
+ if (!sk->sk_prot->ioctl)
+ return -ENOIOCTLCMD;
+ return sk->sk_prot->ioctl(sk, cmd, arg);
}
/*NOTREACHED*/
return(0);
diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c
index 6c464c11bb09..0dc519b40404 100644
--- a/net/ipx/af_ipx.c
+++ b/net/ipx/af_ipx.c
@@ -1884,7 +1884,7 @@ static int ipx_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
rc = -EINVAL;
break;
default:
- rc = dev_ioctl(cmd, argp);
+ rc = -ENOIOCTLCMD;
break;
}
diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
index e57683d424f7..fbfa96754417 100644
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -1822,7 +1822,7 @@ static int irda_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
return -EINVAL;
default:
IRDA_DEBUG(1, "%s(), doing device ioctl!\n", __FUNCTION__);
- return dev_ioctl(cmd, (void __user *) arg);
+ return -ENOIOCTLCMD;
}
/*NOTREACHED*/
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index 9cf65f9d8902..8171c53bc0ed 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -959,7 +959,7 @@ static int llc_ui_getname(struct socket *sock, struct sockaddr *uaddr,
static int llc_ui_ioctl(struct socket *sock, unsigned int cmd,
unsigned long arg)
{
- return dev_ioctl(cmd, (void __user *)arg);
+ return -ENOIOCTLCMD;
}
/**
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 9ee672e19ec1..63b0e4afeb33 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -1215,7 +1215,7 @@ static int nr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
return nr_rt_ioctl(cmd, argp);
default:
- return dev_ioctl(cmd, argp);
+ return -ENOIOCTLCMD;
}
return 0;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index deda6fdb1e53..f69e5ed9bd06 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1521,7 +1521,7 @@ static int packet_ioctl(struct socket *sock, unsigned int cmd,
#endif
default:
- return dev_ioctl(cmd, (void __user *)arg);
+ return -ENOIOCTLCMD;
}
return 0;
}
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 829fdbc4400b..63090be2315a 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -1320,7 +1320,7 @@ static int rose_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
return 0;
default:
- return dev_ioctl(cmd, argp);
+ return -ENOIOCTLCMD;
}
return 0;
diff --git a/net/socket.c b/net/socket.c
index 0dde6dade2b1..06fa217f58a9 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -900,6 +900,13 @@ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg)
break;
default:
err = sock->ops->ioctl(sock, cmd, arg);
+
+ /*
+ * If this ioctl is unknown try to hand it down
+ * to the NIC driver.
+ */
+ if (err == -ENOIOCTLCMD)
+ err = dev_ioctl(cmd, argp);
break;
}
return err;
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 1ddd36d50091..5f6ae79b8b16 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1859,7 +1859,7 @@ static int unix_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
}
default:
- err = dev_ioctl(cmd, (void __user *)arg);
+ err = -ENOIOCTLCMD;
break;
}
return err;
diff --git a/net/wanrouter/af_wanpipe.c b/net/wanrouter/af_wanpipe.c
index 67948bf22dc4..7a43ae4721ed 100644
--- a/net/wanrouter/af_wanpipe.c
+++ b/net/wanrouter/af_wanpipe.c
@@ -1839,7 +1839,7 @@ static int wanpipe_ioctl(struct socket *sock, unsigned int cmd, unsigned long ar
#endif
default:
- return dev_ioctl(cmd,(void __user *) arg);
+ return -ENOIOCTLCMD;
}
/*NOTREACHED*/
}
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index ca8b3b0b920d..16459c7f54b2 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -1378,7 +1378,7 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
}
default:
- rc = dev_ioctl(cmd, argp);
+ rc = -ENOIOCTLCMD;
break;
}
--
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