提交 a72b4422 编写于 作者: T Trond Myklebust

NFSv4: Allow user to set the port used by the NFSv4 callback channel

Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
上级 a895b4a1
......@@ -910,6 +910,10 @@ running once the system is up.
nfsroot= [NFS] nfs root filesystem for disk-less boxes.
See Documentation/nfsroot.txt.
nfs.callback_tcpport=
[NFS] set the TCP port on which the NFSv4 callback
channel should listen.
nmi_watchdog= [KNL,BUGS=IA-32] Debugging features for SMP kernels
no387 [BUGS=IA-32] Tells the kernel to use the 387 maths
......
......@@ -13,4 +13,5 @@ nfs-$(CONFIG_NFS_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o \
delegation.o idmap.o \
callback.o callback_xdr.o callback_proc.o
nfs-$(CONFIG_NFS_DIRECTIO) += direct.o
nfs-$(CONFIG_SYSCTL) += sysctl.o
nfs-objs := $(nfs-y)
......@@ -34,6 +34,7 @@ static struct nfs_callback_data nfs_callback_info;
static DECLARE_MUTEX(nfs_callback_sema);
static struct svc_program nfs4_callback_program;
unsigned int nfs_callback_set_tcpport;
unsigned short nfs_callback_tcpport;
/*
......@@ -98,7 +99,7 @@ int nfs_callback_up(void)
if (!serv)
goto out_err;
/* FIXME: We don't want to register this socket with the portmapper */
ret = svc_makesock(serv, IPPROTO_TCP, 0);
ret = svc_makesock(serv, IPPROTO_TCP, nfs_callback_set_tcpport);
if (ret < 0)
goto out_destroy;
if (!list_empty(&serv->sv_permsocks)) {
......
......@@ -65,6 +65,7 @@ extern unsigned nfs4_callback_recall(struct cb_recallargs *args, void *dummy);
extern int nfs_callback_up(void);
extern int nfs_callback_down(void);
extern unsigned int nfs_callback_set_tcpport;
extern unsigned short nfs_callback_tcpport;
#endif /* __LINUX_FS_NFS_CALLBACK_H */
......@@ -40,6 +40,7 @@
#include <asm/uaccess.h>
#include "nfs4_fs.h"
#include "callback.h"
#include "delegation.h"
#define NFSDBG_FACILITY NFSDBG_VFS
......@@ -2036,6 +2037,21 @@ static struct file_system_type nfs4_fs_type = {
.fs_flags = FS_ODD_RENAME|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
static const int nfs_set_port_min = 0;
static const int nfs_set_port_max = 65535;
static int param_set_port(const char *val, struct kernel_param *kp)
{
char *endp;
int num = simple_strtol(val, &endp, 0);
if (endp == val || *endp || num < nfs_set_port_min || num > nfs_set_port_max)
return -EINVAL;
*((int *)kp->arg) = num;
return 0;
}
module_param_call(callback_tcpport, param_set_port, param_get_int,
&nfs_callback_set_tcpport, 0644);
#define nfs4_init_once(nfsi) \
do { \
INIT_LIST_HEAD(&(nfsi)->open_states); \
......@@ -2043,8 +2059,25 @@ static struct file_system_type nfs4_fs_type = {
nfsi->delegation_state = 0; \
init_rwsem(&nfsi->rwsem); \
} while(0)
#define register_nfs4fs() register_filesystem(&nfs4_fs_type)
#define unregister_nfs4fs() unregister_filesystem(&nfs4_fs_type)
static inline int register_nfs4fs(void)
{
int ret;
ret = nfs_register_sysctl();
if (ret != 0)
return ret;
ret = register_filesystem(&nfs4_fs_type);
if (ret != 0)
nfs_unregister_sysctl();
return ret;
}
static inline void unregister_nfs4fs(void)
{
unregister_filesystem(&nfs4_fs_type);
nfs_unregister_sysctl();
}
#else
#define nfs4_init_once(nfsi) \
do { } while (0)
......
/*
* linux/fs/nfs/sysctl.c
*
* Sysctl interface to NFS parameters
*/
#include <linux/config.h>
#include <linux/types.h>
#include <linux/linkage.h>
#include <linux/ctype.h>
#include <linux/fs.h>
#include <linux/sysctl.h>
#include <linux/module.h>
#include <linux/nfs4.h>
#include "callback.h"
static const int nfs_set_port_min = 0;
static const int nfs_set_port_max = 65535;
static struct ctl_table_header *nfs_callback_sysctl_table;
/*
* Something that isn't CTL_ANY, CTL_NONE or a value that may clash.
* Use the same values as fs/lockd/svc.c
*/
#define CTL_UNNUMBERED -2
static ctl_table nfs_cb_sysctls[] = {
#ifdef CONFIG_NFS_V4
{
.ctl_name = CTL_UNNUMBERED,
.procname = "nfs_callback_tcpport",
.data = &nfs_callback_set_tcpport,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.extra1 = (int *)&nfs_set_port_min,
.extra2 = (int *)&nfs_set_port_max,
},
#endif
{ .ctl_name = 0 }
};
static ctl_table nfs_cb_sysctl_dir[] = {
{
.ctl_name = CTL_UNNUMBERED,
.procname = "nfs",
.mode = 0555,
.child = nfs_cb_sysctls,
},
{ .ctl_name = 0 }
};
static ctl_table nfs_cb_sysctl_root[] = {
{
.ctl_name = CTL_FS,
.procname = "fs",
.mode = 0555,
.child = nfs_cb_sysctl_dir,
},
{ .ctl_name = 0 }
};
int nfs_register_sysctl(void)
{
nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root, 0);
if (nfs_callback_sysctl_table == NULL)
return -ENOMEM;
return 0;
}
void nfs_unregister_sysctl(void)
{
unregister_sysctl_table(nfs_callback_sysctl_table);
nfs_callback_sysctl_table = NULL;
}
......@@ -391,6 +391,17 @@ extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_
*/
extern struct inode_operations nfs_symlink_inode_operations;
/*
* linux/fs/nfs/sysctl.c
*/
#ifdef CONFIG_SYSCTL
extern int nfs_register_sysctl(void);
extern void nfs_unregister_sysctl(void);
#else
#define nfs_register_sysctl() do { } while(0)
#define nfs_unregister_sysctl() do { } while(0)
#endif
/*
* linux/fs/nfs/unlink.c
*/
......
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