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[PATCH] knfsd: allow sockets to be passed to nfsd via 'portlist'

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Userspace should create and bind a socket (but not connectted) and write the
'fd' to portlist.  This will cause the nfs server to listen on that socket.

To close a socket, the name of the socket - as read from 'portlist' can be
written to 'portlist' with a preceding '-'.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown
2006-10-02 02:17:48 -07:00
committed by Linus Torvalds
parent 80212d59e3
commit b41b66d63c
5 changed files with 102 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/sunrpc/svcsock.c
+45 -4
View File
@@ -31,6 +31,7 @@
#include <linux/slab.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/file.h>
#include <net/sock.h>
#include <net/checksum.h>
#include <net/ip.h>
@@ -451,9 +452,9 @@ static int one_sock_name(char *buf, struct svc_sock *svsk)
}
int
svc_sock_names(char *buf, struct svc_serv *serv)
svc_sock_names(char *buf, struct svc_serv *serv, char *toclose)
{
struct svc_sock *svsk;
struct svc_sock *svsk, *closesk = NULL;
int len = 0;
if (!serv)
@@ -461,9 +462,14 @@ svc_sock_names(char *buf, struct svc_serv *serv)
spin_lock(&serv->sv_lock);
list_for_each_entry(svsk, &serv->sv_permsocks, sk_list) {
int onelen = one_sock_name(buf+len, svsk);
len += onelen;
if (toclose && strcmp(toclose, buf+len) == 0)
closesk = svsk;
else
len += onelen;
}
spin_unlock(&serv->sv_lock);
if (closesk)
svc_delete_socket(closesk);
return len;
}
EXPORT_SYMBOL(svc_sock_names);
@@ -1407,6 +1413,38 @@ svc_setup_socket(struct svc_serv *serv, struct socket *sock,
return svsk;
}
int svc_addsock(struct svc_serv *serv,
int fd,
char *name_return,
int *proto)
{
int err = 0;
struct socket *so = sockfd_lookup(fd, &err);
struct svc_sock *svsk = NULL;
if (!so)
return err;
if (so->sk->sk_family != AF_INET)
err = -EAFNOSUPPORT;
else if (so->sk->sk_protocol != IPPROTO_TCP &&
so->sk->sk_protocol != IPPROTO_UDP)
err = -EPROTONOSUPPORT;
else if (so->state > SS_UNCONNECTED)
err = -EISCONN;
else {
svsk = svc_setup_socket(serv, so, &err, 1);
if (svsk)
err = 0;
}
if (err) {
sockfd_put(so);
return err;
}
if (proto) *proto = so->sk->sk_protocol;
return one_sock_name(name_return, svsk);
}
EXPORT_SYMBOL_GPL(svc_addsock);
/*
* Create socket for RPC service.
*/
@@ -1482,7 +1520,10 @@ svc_delete_socket(struct svc_sock *svsk)
if (!svsk->sk_inuse) {
spin_unlock_bh(&serv->sv_lock);
sock_release(svsk->sk_sock);
if (svsk->sk_sock->file)
sockfd_put(svsk->sk_sock);
else
sock_release(svsk->sk_sock);
kfree(svsk);
} else {
spin_unlock_bh(&serv->sv_lock);