[PATCH 3.4 59/88] nfsd: pass net to __write_ports() and down

Greg Kroah-Hartman
2014-06-10T00:30:26Z

From: Stanislav Kinsbursky <skinsbursky@parallels.com>

commit 081603520b25f7b35ef63a363376a17c36ef74ed upstream.

Precursor patch. Hard-coded "init_net" will be replaced by proper one in
future.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
[wengmeiling: backport to 3.4:
- adjust context
- add net_ns parameter to __write_ports_delxprt()]
Signed-off-by: Weng Meiling <wengmeiling.weng@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/nfsd/nfsctl.c | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)

--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -650,11 +650,10 @@ static ssize_t __write_ports_names(char
* a socket of a supported family/protocol, and we use it as an
* nfsd listener.
*/
-static ssize_t __write_ports_addfd(char *buf)
+static ssize_t __write_ports_addfd(char *buf, struct net *net)
{
char *mesg = buf;
int fd, err;
- struct net *net = &init_net;

err = get_int(&mesg, &fd);
if (err != 0 || fd < 0)
@@ -698,12 +697,11 @@ static ssize_t __write_ports_delfd(char
* A transport listener is added by writing it's transport name and
* a port number.
*/
-static ssize_t __write_ports_addxprt(char *buf)
+static ssize_t __write_ports_addxprt(char *buf, struct net *net)
{
char transport[16];
struct svc_xprt *xprt;
int port, err;
- struct net *net = &init_net;

if (sscanf(buf, "%15s %4u", transport, &port) != 2)
return -EINVAL;
@@ -743,7 +741,7 @@ out_err:
* A transport listener is removed by writing a "-", it's transport
* name, and it's port number.
*/
-static ssize_t __write_ports_delxprt(char *buf)
+static ssize_t __write_ports_delxprt(char *buf, struct net *net)
{
struct svc_xprt *xprt;
char transport[16];
@@ -755,7 +753,7 @@ static ssize_t __write_ports_delxprt(cha
if (port < 1 || port > USHRT_MAX || nfsd_serv == NULL)
return -EINVAL;

- xprt = svc_find_xprt(nfsd_serv, transport, &init_net, AF_UNSPEC, port);
+ xprt = svc_find_xprt(nfsd_serv, transport, net, AF_UNSPEC, port);
if (xprt == NULL)
return -ENOTCONN;

@@ -764,22 +762,23 @@ static ssize_t __write_ports_delxprt(cha
return 0;
}

-static ssize_t __write_ports(struct file *file, char *buf, size_t size)
+static ssize_t __write_ports(struct file *file, char *buf, size_t size,
+ struct net *net)
{
if (size == 0)
return __write_ports_names(buf);

if (isdigit(buf[0]))
- return __write_ports_addfd(buf);
+ return __write_ports_addfd(buf, net);

if (buf[0] == '-' && isdigit(buf[1]))
return __write_ports_delfd(buf);

if (isalpha(buf[0]))
- return __write_ports_addxprt(buf);
+ return __write_ports_addxprt(buf, net);

if (buf[0] == '-' && isalpha(buf[1]))
- return __write_ports_delxprt(buf);
+ return __write_ports_delxprt(buf, net);

return -EINVAL;
}
@@ -858,9 +857,10 @@ static ssize_t __write_ports(struct file
static ssize_t write_ports(struct file *file, char *buf, size_t size)
{
ssize_t rv;
+ struct net *net = &init_net;

mutex_lock(&nfsd_mutex);
- rv = __write_ports(file, buf, size);
+ rv = __write_ports(file, buf, size, net);
mutex_unlock(&nfsd_mutex);
return rv;
}