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nfsd/nfsctl.c: new helper

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... to get from opened file on nfsctl to relevant struct net *

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2014-10-21 20:19:11 -04:00
parent a455589f18
commit 244c7d444b
1 changed files with 16 additions and 21 deletions
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37
fs/nfsd/nfsctl.c
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@ -231,6 +231,10 @@ static struct file_operations reply_cache_stats_operations = {
* payload - write methods
*/
static inline struct net *netns(struct file *file)
{
return file_inode(file)->i_sb->s_fs_info;
}
/**
* write_unlock_ip - Release all locks used by a client
@ -252,7 +256,7 @@ static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size)
struct sockaddr *sap = (struct sockaddr *)&address;
size_t salen = sizeof(address);
char *fo_path;
struct net *net = file->f_dentry->d_sb->s_fs_info;
struct net *net = netns(file);
/* sanity check */
if (size == 0)
@ -350,7 +354,6 @@ static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
int len;
struct auth_domain *dom;
struct knfsd_fh fh;
struct net *net = file->f_dentry->d_sb->s_fs_info;
if (size == 0)
return -EINVAL;
@ -385,7 +388,7 @@ static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
if (!dom)
return -ENOMEM;
len = exp_rootfh(net, dom, path, &fh, maxsize);
len = exp_rootfh(netns(file), dom, path, &fh, maxsize);
auth_domain_put(dom);
if (len)
return len;
@ -429,7 +432,7 @@ static ssize_t write_threads(struct file *file, char *buf, size_t size)
{
char *mesg = buf;
int rv;
struct net *net = file->f_dentry->d_sb->s_fs_info;
struct net *net = netns(file);
if (size > 0) {
int newthreads;
@ -480,7 +483,7 @@ static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
int len;
int npools;
int *nthreads;
struct net *net = file->f_dentry->d_sb->s_fs_info;
struct net *net = netns(file);
mutex_lock(&nfsd_mutex);
npools = nfsd_nrpools(net);
@ -543,8 +546,7 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
unsigned minor;
ssize_t tlen = 0;
char *sep;
struct net *net = file->f_dentry->d_sb->s_fs_info;
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
if (size>0) {
if (nn->nfsd_serv)
@ -830,10 +832,9 @@ 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)
{
ssize_t rv;
struct net *net = file->f_dentry->d_sb->s_fs_info;
mutex_lock(&nfsd_mutex);
rv = __write_ports(file, buf, size, net);
rv = __write_ports(file, buf, size, netns(file));
mutex_unlock(&nfsd_mutex);
return rv;
}
@ -865,8 +866,7 @@ int nfsd_max_blksize;
static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
{
char *mesg = buf;
struct net *net = file->f_dentry->d_sb->s_fs_info;
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
if (size > 0) {
int bsize;
@ -915,8 +915,7 @@ static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
static ssize_t write_maxconn(struct file *file, char *buf, size_t size)
{
char *mesg = buf;
struct net *net = file->f_dentry->d_sb->s_fs_info;
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
unsigned int maxconn = nn->max_connections;
if (size > 0) {
@ -997,8 +996,7 @@ static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size,
*/
static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
{
struct net *net = file->f_dentry->d_sb->s_fs_info;
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
return nfsd4_write_time(file, buf, size, &nn->nfsd4_lease, nn);
}
@ -1014,8 +1012,7 @@ static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
*/
static ssize_t write_gracetime(struct file *file, char *buf, size_t size)
{
struct net *net = file->f_dentry->d_sb->s_fs_info;
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
return nfsd4_write_time(file, buf, size, &nn->nfsd4_grace, nn);
}
@ -1071,8 +1068,7 @@ static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size,
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
{
ssize_t rv;
struct net *net = file->f_dentry->d_sb->s_fs_info;
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
mutex_lock(&nfsd_mutex);
rv = __write_recoverydir(file, buf, size, nn);
@ -1102,8 +1098,7 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
*/
static ssize_t write_v4_end_grace(struct file *file, char *buf, size_t size)
{
struct net *net = file->f_dentry->d_sb->s_fs_info;
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
struct nfsd_net *nn = net_generic(netns(file), nfsd_net_id);
if (size > 0) {
switch(buf[0]) {