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SubjectRe: 2.4.0: Small observation in /proc/sys/net/unix/
   Date: 	Thu, 11 Jan 2001 11:35:30 +0000
From: Darryl Miles <darryl@netbauds.net>

Identical filenames, nothing bad appears to be happening it just
looks weird.

Known problem, here is the fix:

diff -u --recursive --new-file --exclude=CVS --exclude=.cvsignore vanilla/linux/net/sysctl_net.c linux/net/sysctl_net.c
--- vanilla/linux/net/sysctl_net.c Thu Mar 9 06:57:17 2000
+++ linux/net/sysctl_net.c Sat Jan 6 22:45:24 2001
@@ -26,10 +26,6 @@

extern ctl_table core_table[];

-#ifdef CONFIG_UNIX
-extern ctl_table unix_table[];
-#endif
-
#ifdef CONFIG_NET
extern ctl_table ether_table[], e802_table[];
#endif
@@ -48,9 +44,6 @@

ctl_table net_table[] = {
{NET_CORE, "core", NULL, 0, 0555, core_table},
-#ifdef CONFIG_UNIX
- {NET_UNIX, "unix", NULL, 0, 0555, unix_table},
-#endif
#ifdef CONFIG_NET
{NET_802, "802", NULL, 0, 0555, e802_table},
{NET_ETHER, "ethernet", NULL, 0, 0555, ether_table},
diff -u --recursive --new-file --exclude=CVS --exclude=.cvsignore vanilla/linux/net/unix/Makefile linux/net/unix/Makefile
--- vanilla/linux/net/unix/Makefile Fri Dec 29 14:07:24 2000
+++ linux/net/unix/Makefile Sat Jan 6 22:45:24 2001
@@ -16,5 +16,3 @@

include $(TOPDIR)/Rules.make

-tar:
- tar -cvf /dev/f1 .
diff -u --recursive --new-file --exclude=CVS --exclude=.cvsignore vanilla/linux/net/unix/af_unix.c linux/net/unix/af_unix.c
--- vanilla/linux/net/unix/af_unix.c Sat Nov 11 19:02:41 2000
+++ linux/net/unix/af_unix.c Sat Jan 6 22:45:24 2001
@@ -1,5 +1,5 @@
/*
- * NET3: Implementation of BSD Unix domain sockets.
+ * NET4: Implementation of BSD Unix domain sockets.
*
* Authors: Alan Cox, <alan.cox@linux.org>
*
@@ -8,7 +8,7 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
- * Version: $Id: af_unix.c,v 1.108 2000/11/10 04:02:04 davem Exp $
+ * Version: $Id: af_unix.c,v 1.109 2001/01/06 00:42:23 davem Exp $
*
* Fixes:
* Linus Torvalds : Assorted bug cures.
@@ -124,13 +124,12 @@
#define UNIX_ABSTRACT(sk) ((sk)->protinfo.af_unix.addr->hash!=UNIX_HASH_SIZE)

/*
- SMP locking strategy.
- * hash table is protceted with rwlock unix_table_lock
- * each socket state is protected by separate rwlock.
-
+ * SMP locking strategy:
+ * hash table is protected with rwlock unix_table_lock
+ * each socket state is protected by separate rwlock.
*/

-extern __inline__ unsigned unix_hash_fold(unsigned hash)
+static inline unsigned unix_hash_fold(unsigned hash)
{
hash ^= hash>>16;
hash ^= hash>>8;
@@ -139,17 +138,17 @@

#define unix_peer(sk) ((sk)->pair)

-extern __inline__ int unix_our_peer(unix_socket *sk, unix_socket *osk)
+static inline int unix_our_peer(unix_socket *sk, unix_socket *osk)
{
return unix_peer(osk) == sk;
}

-extern __inline__ int unix_may_send(unix_socket *sk, unix_socket *osk)
+static inline int unix_may_send(unix_socket *sk, unix_socket *osk)
{
return (unix_peer(osk) == NULL || unix_our_peer(sk, osk));
}

-static __inline__ unix_socket * unix_peer_get(unix_socket *s)
+static inline unix_socket * unix_peer_get(unix_socket *s)
{
unix_socket *peer;

@@ -161,7 +160,7 @@
return peer;
}

-extern __inline__ void unix_release_addr(struct unix_address *addr)
+extern inline void unix_release_addr(struct unix_address *addr)
{
if (atomic_dec_and_test(&addr->refcnt))
kfree(addr);
@@ -231,14 +230,14 @@
sock_hold(sk);
}

-static __inline__ void unix_remove_socket(unix_socket *sk)
+static inline void unix_remove_socket(unix_socket *sk)
{
write_lock(&unix_table_lock);
__unix_remove_socket(sk);
write_unlock(&unix_table_lock);
}

-static __inline__ void unix_insert_socket(unix_socket **list, unix_socket *sk)
+static inline void unix_insert_socket(unix_socket **list, unix_socket *sk)
{
write_lock(&unix_table_lock);
__unix_insert_socket(list, sk);
@@ -258,7 +257,7 @@
return NULL;
}

-static __inline__ unix_socket *
+static inline unix_socket *
unix_find_socket_byname(struct sockaddr_un *sunname,
int len, int type, unsigned hash)
{
@@ -291,7 +290,7 @@
return s;
}

-static __inline__ int unix_writable(struct sock *sk)
+static inline int unix_writable(struct sock *sk)
{
return ((atomic_read(&sk->wmem_alloc)<<2) <= sk->sndbuf);
}
@@ -1823,7 +1822,7 @@

struct proto_ops unix_dgram_ops = {
family: PF_UNIX,
-
+
release: unix_release,
bind: unix_bind,
connect: unix_dgram_connect,
@@ -1842,20 +1841,25 @@
};

struct net_proto_family unix_family_ops = {
- PF_UNIX,
- unix_create
+ family: PF_UNIX,
+ create: unix_create
};

#ifdef CONFIG_SYSCTL
extern void unix_sysctl_register(void);
extern void unix_sysctl_unregister(void);
+#else
+static inline unix_sysctl_register() {};
+static inline unix_sysctl_unregister() {};
#endif

+static const char banner[] __initdata = KERN_INFO "NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.\n";
+
static int __init af_unix_init(void)
{
struct sk_buff *dummy_skb;
-
- printk(KERN_INFO "NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.\n");
+
+ printk(banner);
if (sizeof(struct unix_skb_parms) > sizeof(dummy_skb->cb))
{
printk(KERN_CRIT "unix_proto_init: panic\n");
@@ -1865,23 +1869,15 @@
#ifdef CONFIG_PROC_FS
create_proc_read_entry("net/unix", 0, 0, unix_read_proc, NULL);
#endif
-
-#ifdef CONFIG_SYSCTL
unix_sysctl_register();
-#endif
-
return 0;
}

static void __exit af_unix_exit(void)
{
sock_unregister(PF_UNIX);
-#ifdef CONFIG_SYSCTL
unix_sysctl_unregister();
-#endif
-#ifdef CONFIG_PROC_FS
remove_proc_entry("net/unix", 0);
-#endif
}

module_init(af_unix_init);
diff -u --recursive --new-file --exclude=CVS --exclude=.cvsignore vanilla/linux/net/unix/sysctl_net_unix.c linux/net/unix/sysctl_net_unix.c
--- vanilla/linux/net/unix/sysctl_net_unix.c Mon Oct 16 12:42:54 2000
+++ linux/net/unix/sysctl_net_unix.c Sat Jan 6 22:45:24 2001
@@ -1,10 +1,8 @@
/*
- * NET3: Sysctl interface to net af_unix subsystem.
+ * NET4: Sysctl interface to net af_unix subsystem.
*
* Authors: Mike Shaver.
*
- * Added /proc/sys/net/unix directory entry (empty =) ).
- *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
@@ -15,8 +13,6 @@
#include <linux/sysctl.h>
#include <linux/config.h>

-#ifdef CONFIG_SYSCTL
-
extern int sysctl_unix_max_dgram_qlen;

ctl_table unix_table[] = {
@@ -26,20 +22,18 @@
{0}
};

-static struct ctl_table_header * unix_sysctl_header;
-static struct ctl_table unix_root_table[];
-static struct ctl_table unix_net_table[];
-
-ctl_table unix_root_table[] = {
- {CTL_NET, "net", NULL, 0, 0555, unix_net_table},
+static ctl_table unix_net_table[] = {
+ {NET_UNIX, "unix", NULL, 0, 0555, unix_table},
{0}
};

-ctl_table unix_net_table[] = {
- {NET_UNIX, "unix", NULL, 0, 0555, unix_table},
+static ctl_table unix_root_table[] = {
+ {CTL_NET, "net", NULL, 0, 0555, unix_net_table},
{0}
};

+static struct ctl_table_header * unix_sysctl_header;
+
void unix_sysctl_register(void)
{
unix_sysctl_header = register_sysctl_table(unix_root_table, 0);
@@ -50,4 +44,3 @@
unregister_sysctl_table(unix_sysctl_header);
}

-#endif /* CONFIG_SYSCTL */
-
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