sysctl: simplify ->strategy

name and nlen parameters passed to ->strategy hook are unused, remove
them.  In general ->strategy hook should know what it's doing, and don't
do something tricky for which, say, pointer to original userspace array
may be needed (name).

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net> [ networking bits ]
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 13 insertions, 19 deletions

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index b12dae2..5154e72 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1283,7 +1283,7 @@ static int devinet_conf_proc(ctl_table *ctl, int write,
 	return ret;
 }
 
-static int devinet_conf_sysctl(ctl_table *table, int __user *name, int nlen,
+static int devinet_conf_sysctl(ctl_table *table,
 			       void __user *oldval, size_t __user *oldlenp,
 			       void __user *newval, size_t newlen)
 {
@@ -1379,12 +1379,11 @@ int ipv4_doint_and_flush(ctl_table *ctl, int write,
 	return ret;
 }
 
-int ipv4_doint_and_flush_strategy(ctl_table *table, int __user *name, int nlen,
+int ipv4_doint_and_flush_strategy(ctl_table *table,
 				  void __user *oldval, size_t __user *oldlenp,
 				  void __user *newval, size_t newlen)
 {
-	int ret = devinet_conf_sysctl(table, name, nlen, oldval, oldlenp,
-				      newval, newlen);
+	int ret = devinet_conf_sysctl(table, oldval, oldlenp, newval, newlen);
 	struct net *net = table->extra2;
 
 	if (ret == 1)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index a6d7c58..942be04 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2908,8 +2908,6 @@ static int ipv4_sysctl_rtcache_flush(ctl_table *__ctl, int write,
 }
 
 static int ipv4_sysctl_rtcache_flush_strategy(ctl_table *table,
-						int __user *name,
-						int nlen,
 						void __user *oldval,
 						size_t __user *oldlenp,
 						void __user *newval,
@@ -2972,16 +2970,13 @@ static int ipv4_sysctl_rt_secret_interval(ctl_table *ctl, int write,
 }
 
 static int ipv4_sysctl_rt_secret_interval_strategy(ctl_table *table,
-						   int __user *name,
-						   int nlen,
 						   void __user *oldval,
 						   size_t __user *oldlenp,
 						   void __user *newval,
 						   size_t newlen)
 {
 	int old = ip_rt_secret_interval;
-	int ret = sysctl_jiffies(table, name, nlen, oldval, oldlenp, newval,
-				 newlen);
+	int ret = sysctl_jiffies(table, oldval, oldlenp, newval, newlen);
 
 	rt_secret_reschedule(old);
 
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 276d047..1bb10df 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -64,8 +64,8 @@ static int ipv4_local_port_range(ctl_table *table, int write, struct file *filp,
 }
 
 /* Validate changes from sysctl interface. */
-static int ipv4_sysctl_local_port_range(ctl_table *table, int __user *name,
-					 int nlen, void __user *oldval,
+static int ipv4_sysctl_local_port_range(ctl_table *table,
+					 void __user *oldval,
 					 size_t __user *oldlenp,
 					void __user *newval, size_t newlen)
 {
@@ -80,7 +80,7 @@ static int ipv4_sysctl_local_port_range(ctl_table *table, int __user *name,
 	};
 
 	inet_get_local_port_range(range, range + 1);
-	ret = sysctl_intvec(&tmp, name, nlen, oldval, oldlenp, newval, newlen);
+	ret = sysctl_intvec(&tmp, oldval, oldlenp, newval, newlen);
 	if (ret == 0 && newval && newlen) {
 		if (range[1] < range[0])
 			ret = -EINVAL;
@@ -109,8 +109,8 @@ static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file *
 	return ret;
 }
 
-static int sysctl_tcp_congestion_control(ctl_table *table, int __user *name,
-					 int nlen, void __user *oldval,
+static int sysctl_tcp_congestion_control(ctl_table *table,
+					 void __user *oldval,
 					 size_t __user *oldlenp,
 					 void __user *newval, size_t newlen)
 {
@@ -122,7 +122,7 @@ static int sysctl_tcp_congestion_control(ctl_table *table, int __user *name,
 	int ret;
 
 	tcp_get_default_congestion_control(val);
-	ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen);
+	ret = sysctl_string(&tbl, oldval, oldlenp, newval, newlen);
 	if (ret == 1 && newval && newlen)
 		ret = tcp_set_default_congestion_control(val);
 	return ret;
@@ -165,8 +165,8 @@ static int proc_allowed_congestion_control(ctl_table *ctl,
 	return ret;
 }
 
-static int strategy_allowed_congestion_control(ctl_table *table, int __user *name,
-					       int nlen, void __user *oldval,
+static int strategy_allowed_congestion_control(ctl_table *table,
+					       void __user *oldval,
 					       size_t __user *oldlenp,
 					       void __user *newval,
 					       size_t newlen)
@@ -179,7 +179,7 @@ static int strategy_allowed_congestion_control(ctl_table *table, int __user *nam
 		return -ENOMEM;
 
 	tcp_get_available_congestion_control(tbl.data, tbl.maxlen);
-	ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen);
+	ret = sysctl_string(&tbl, oldval, oldlenp, newval, newlen);
 	if (ret == 1 && newval && newlen)
 		ret = tcp_set_allowed_congestion_control(tbl.data);
 	kfree(tbl.data);