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![Alexey Dobriyan](/assets/img/avatar_default.png)
[akpm@linux-foundation.org: fix KVM] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1444 lines
36 KiB
C
1444 lines
36 KiB
C
/*
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* linux/fs/nfsd/nfsctl.c
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*
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* Syscall interface to knfsd.
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*
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* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
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*/
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#include <linux/module.h>
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#include <linux/linkage.h>
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#include <linux/time.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/namei.h>
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#include <linux/fcntl.h>
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#include <linux/net.h>
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#include <linux/in.h>
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#include <linux/syscalls.h>
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#include <linux/unistd.h>
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#include <linux/slab.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/pagemap.h>
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#include <linux/init.h>
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#include <linux/inet.h>
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#include <linux/string.h>
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#include <linux/ctype.h>
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#include <linux/nfs.h>
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#include <linux/nfsd_idmap.h>
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#include <linux/lockd/bind.h>
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#include <linux/sunrpc/svc.h>
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#include <linux/sunrpc/svcsock.h>
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#include <linux/nfsd/nfsd.h>
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#include <linux/nfsd/cache.h>
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#include <linux/nfsd/xdr.h>
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#include <linux/nfsd/syscall.h>
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#include <linux/lockd/lockd.h>
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#include <linux/sunrpc/clnt.h>
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#include <asm/uaccess.h>
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#include <net/ipv6.h>
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/*
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* We have a single directory with 9 nodes in it.
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*/
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enum {
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NFSD_Root = 1,
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NFSD_Svc,
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NFSD_Add,
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NFSD_Del,
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NFSD_Export,
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NFSD_Unexport,
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NFSD_Getfd,
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NFSD_Getfs,
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NFSD_List,
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NFSD_Fh,
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NFSD_FO_UnlockIP,
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NFSD_FO_UnlockFS,
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NFSD_Threads,
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NFSD_Pool_Threads,
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NFSD_Pool_Stats,
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NFSD_Versions,
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NFSD_Ports,
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NFSD_MaxBlkSize,
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/*
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* The below MUST come last. Otherwise we leave a hole in nfsd_files[]
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* with !CONFIG_NFSD_V4 and simple_fill_super() goes oops
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*/
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#ifdef CONFIG_NFSD_V4
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NFSD_Leasetime,
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NFSD_RecoveryDir,
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#endif
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};
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/*
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* write() for these nodes.
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*/
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static ssize_t write_svc(struct file *file, char *buf, size_t size);
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static ssize_t write_add(struct file *file, char *buf, size_t size);
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static ssize_t write_del(struct file *file, char *buf, size_t size);
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static ssize_t write_export(struct file *file, char *buf, size_t size);
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static ssize_t write_unexport(struct file *file, char *buf, size_t size);
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static ssize_t write_getfd(struct file *file, char *buf, size_t size);
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static ssize_t write_getfs(struct file *file, char *buf, size_t size);
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static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
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static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size);
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static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size);
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static ssize_t write_threads(struct file *file, char *buf, size_t size);
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static ssize_t write_pool_threads(struct file *file, char *buf, size_t size);
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static ssize_t write_versions(struct file *file, char *buf, size_t size);
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static ssize_t write_ports(struct file *file, char *buf, size_t size);
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static ssize_t write_maxblksize(struct file *file, char *buf, size_t size);
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#ifdef CONFIG_NFSD_V4
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static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
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static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
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#endif
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static ssize_t (*write_op[])(struct file *, char *, size_t) = {
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[NFSD_Svc] = write_svc,
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[NFSD_Add] = write_add,
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[NFSD_Del] = write_del,
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[NFSD_Export] = write_export,
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[NFSD_Unexport] = write_unexport,
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[NFSD_Getfd] = write_getfd,
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[NFSD_Getfs] = write_getfs,
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[NFSD_Fh] = write_filehandle,
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[NFSD_FO_UnlockIP] = write_unlock_ip,
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[NFSD_FO_UnlockFS] = write_unlock_fs,
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[NFSD_Threads] = write_threads,
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[NFSD_Pool_Threads] = write_pool_threads,
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[NFSD_Versions] = write_versions,
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[NFSD_Ports] = write_ports,
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[NFSD_MaxBlkSize] = write_maxblksize,
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#ifdef CONFIG_NFSD_V4
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[NFSD_Leasetime] = write_leasetime,
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[NFSD_RecoveryDir] = write_recoverydir,
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#endif
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};
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static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos)
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{
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ino_t ino = file->f_path.dentry->d_inode->i_ino;
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char *data;
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ssize_t rv;
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if (ino >= ARRAY_SIZE(write_op) || !write_op[ino])
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return -EINVAL;
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data = simple_transaction_get(file, buf, size);
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if (IS_ERR(data))
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return PTR_ERR(data);
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rv = write_op[ino](file, data, size);
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if (rv >= 0) {
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simple_transaction_set(file, rv);
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rv = size;
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}
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return rv;
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}
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static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos)
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{
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if (! file->private_data) {
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/* An attempt to read a transaction file without writing
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* causes a 0-byte write so that the file can return
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* state information
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*/
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ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos);
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if (rv < 0)
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return rv;
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}
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return simple_transaction_read(file, buf, size, pos);
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}
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static const struct file_operations transaction_ops = {
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.write = nfsctl_transaction_write,
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.read = nfsctl_transaction_read,
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.release = simple_transaction_release,
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};
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static int exports_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &nfs_exports_op);
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}
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static const struct file_operations exports_operations = {
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.open = exports_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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.owner = THIS_MODULE,
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};
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extern int nfsd_pool_stats_open(struct inode *inode, struct file *file);
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extern int nfsd_pool_stats_release(struct inode *inode, struct file *file);
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static const struct file_operations pool_stats_operations = {
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.open = nfsd_pool_stats_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = nfsd_pool_stats_release,
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.owner = THIS_MODULE,
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};
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/*----------------------------------------------------------------------------*/
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/*
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* payload - write methods
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*/
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/**
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* write_svc - Start kernel's NFSD server
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*
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* Deprecated. /proc/fs/nfsd/threads is preferred.
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* Function remains to support old versions of nfs-utils.
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*
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* Input:
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* buf: struct nfsctl_svc
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* svc_port: port number of this
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* server's listener
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* svc_nthreads: number of threads to start
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* size: size in bytes of passed in nfsctl_svc
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* Output:
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* On success: returns zero
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* On error: return code is negative errno value
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*/
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static ssize_t write_svc(struct file *file, char *buf, size_t size)
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{
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struct nfsctl_svc *data;
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int err;
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if (size < sizeof(*data))
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return -EINVAL;
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data = (struct nfsctl_svc*) buf;
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err = nfsd_svc(data->svc_port, data->svc_nthreads);
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if (err < 0)
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return err;
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return 0;
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}
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/**
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* write_add - Add or modify client entry in auth unix cache
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*
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* Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
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* Function remains to support old versions of nfs-utils.
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*
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* Input:
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* buf: struct nfsctl_client
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* cl_ident: '\0'-terminated C string
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* containing domain name
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* of client
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* cl_naddr: no. of items in cl_addrlist
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* cl_addrlist: array of client addresses
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* cl_fhkeytype: ignored
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* cl_fhkeylen: ignored
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* cl_fhkey: ignored
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* size: size in bytes of passed in nfsctl_client
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* Output:
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* On success: returns zero
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* On error: return code is negative errno value
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*
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* Note: Only AF_INET client addresses are passed in, since
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* nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
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*/
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static ssize_t write_add(struct file *file, char *buf, size_t size)
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{
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struct nfsctl_client *data;
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if (size < sizeof(*data))
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return -EINVAL;
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data = (struct nfsctl_client *)buf;
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return exp_addclient(data);
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}
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/**
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* write_del - Remove client from auth unix cache
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*
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* Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
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* Function remains to support old versions of nfs-utils.
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*
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* Input:
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* buf: struct nfsctl_client
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* cl_ident: '\0'-terminated C string
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* containing domain name
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* of client
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* cl_naddr: ignored
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* cl_addrlist: ignored
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* cl_fhkeytype: ignored
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* cl_fhkeylen: ignored
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* cl_fhkey: ignored
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* size: size in bytes of passed in nfsctl_client
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* Output:
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* On success: returns zero
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* On error: return code is negative errno value
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*
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* Note: Only AF_INET client addresses are passed in, since
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* nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
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*/
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static ssize_t write_del(struct file *file, char *buf, size_t size)
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{
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struct nfsctl_client *data;
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if (size < sizeof(*data))
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return -EINVAL;
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data = (struct nfsctl_client *)buf;
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return exp_delclient(data);
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}
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/**
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* write_export - Export part or all of a local file system
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*
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* Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
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* Function remains to support old versions of nfs-utils.
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*
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* Input:
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* buf: struct nfsctl_export
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* ex_client: '\0'-terminated C string
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* containing domain name
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* of client allowed to access
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* this export
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* ex_path: '\0'-terminated C string
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* containing pathname of
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* directory in local file system
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* ex_dev: fsid to use for this export
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* ex_ino: ignored
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* ex_flags: export flags for this export
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* ex_anon_uid: UID to use for anonymous
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* requests
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* ex_anon_gid: GID to use for anonymous
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* requests
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* size: size in bytes of passed in nfsctl_export
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* Output:
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* On success: returns zero
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* On error: return code is negative errno value
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*/
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static ssize_t write_export(struct file *file, char *buf, size_t size)
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{
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struct nfsctl_export *data;
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if (size < sizeof(*data))
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return -EINVAL;
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data = (struct nfsctl_export*)buf;
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return exp_export(data);
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}
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/**
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* write_unexport - Unexport a previously exported file system
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*
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* Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
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* Function remains to support old versions of nfs-utils.
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*
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* Input:
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* buf: struct nfsctl_export
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* ex_client: '\0'-terminated C string
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* containing domain name
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* of client no longer allowed
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* to access this export
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* ex_path: '\0'-terminated C string
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* containing pathname of
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* directory in local file system
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* ex_dev: ignored
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* ex_ino: ignored
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* ex_flags: ignored
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* ex_anon_uid: ignored
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* ex_anon_gid: ignored
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* size: size in bytes of passed in nfsctl_export
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* Output:
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* On success: returns zero
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* On error: return code is negative errno value
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*/
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static ssize_t write_unexport(struct file *file, char *buf, size_t size)
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{
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struct nfsctl_export *data;
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if (size < sizeof(*data))
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return -EINVAL;
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data = (struct nfsctl_export*)buf;
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return exp_unexport(data);
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}
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/**
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* write_getfs - Get a variable-length NFS file handle by path
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*
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* Deprecated. /proc/fs/nfsd/filehandle is preferred.
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* Function remains to support old versions of nfs-utils.
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*
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* Input:
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* buf: struct nfsctl_fsparm
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* gd_addr: socket address of client
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* gd_path: '\0'-terminated C string
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* containing pathname of
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* directory in local file system
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* gd_maxlen: maximum size of returned file
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* handle
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* size: size in bytes of passed in nfsctl_fsparm
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* Output:
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* On success: passed-in buffer filled with a knfsd_fh structure
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* (a variable-length raw NFS file handle);
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* return code is the size in bytes of the file handle
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* On error: return code is negative errno value
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*
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* Note: Only AF_INET client addresses are passed in, since gd_addr
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* is the same size as a struct sockaddr_in.
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*/
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static ssize_t write_getfs(struct file *file, char *buf, size_t size)
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{
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struct nfsctl_fsparm *data;
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struct sockaddr_in *sin;
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struct auth_domain *clp;
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int err = 0;
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struct knfsd_fh *res;
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struct in6_addr in6;
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if (size < sizeof(*data))
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return -EINVAL;
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data = (struct nfsctl_fsparm*)buf;
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err = -EPROTONOSUPPORT;
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if (data->gd_addr.sa_family != AF_INET)
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goto out;
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sin = (struct sockaddr_in *)&data->gd_addr;
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if (data->gd_maxlen > NFS3_FHSIZE)
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data->gd_maxlen = NFS3_FHSIZE;
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|
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res = (struct knfsd_fh*)buf;
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|
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exp_readlock();
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ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
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|
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clp = auth_unix_lookup(&in6);
|
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if (!clp)
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err = -EPERM;
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else {
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err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
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auth_domain_put(clp);
|
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}
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exp_readunlock();
|
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if (err == 0)
|
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err = res->fh_size + offsetof(struct knfsd_fh, fh_base);
|
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out:
|
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return err;
|
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}
|
|
|
|
/**
|
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* write_getfd - Get a fixed-length NFS file handle by path (used by mountd)
|
|
*
|
|
* Deprecated. /proc/fs/nfsd/filehandle is preferred.
|
|
* Function remains to support old versions of nfs-utils.
|
|
*
|
|
* Input:
|
|
* buf: struct nfsctl_fdparm
|
|
* gd_addr: socket address of client
|
|
* gd_path: '\0'-terminated C string
|
|
* containing pathname of
|
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* directory in local file system
|
|
* gd_version: fdparm structure version
|
|
* size: size in bytes of passed in nfsctl_fdparm
|
|
* Output:
|
|
* On success: passed-in buffer filled with nfsctl_res
|
|
* (a fixed-length raw NFS file handle);
|
|
* return code is the size in bytes of the file handle
|
|
* On error: return code is negative errno value
|
|
*
|
|
* Note: Only AF_INET client addresses are passed in, since gd_addr
|
|
* is the same size as a struct sockaddr_in.
|
|
*/
|
|
static ssize_t write_getfd(struct file *file, char *buf, size_t size)
|
|
{
|
|
struct nfsctl_fdparm *data;
|
|
struct sockaddr_in *sin;
|
|
struct auth_domain *clp;
|
|
int err = 0;
|
|
struct knfsd_fh fh;
|
|
char *res;
|
|
struct in6_addr in6;
|
|
|
|
if (size < sizeof(*data))
|
|
return -EINVAL;
|
|
data = (struct nfsctl_fdparm*)buf;
|
|
err = -EPROTONOSUPPORT;
|
|
if (data->gd_addr.sa_family != AF_INET)
|
|
goto out;
|
|
err = -EINVAL;
|
|
if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS)
|
|
goto out;
|
|
|
|
res = buf;
|
|
sin = (struct sockaddr_in *)&data->gd_addr;
|
|
exp_readlock();
|
|
|
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ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
|
|
|
|
clp = auth_unix_lookup(&in6);
|
|
if (!clp)
|
|
err = -EPERM;
|
|
else {
|
|
err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);
|
|
auth_domain_put(clp);
|
|
}
|
|
exp_readunlock();
|
|
|
|
if (err == 0) {
|
|
memset(res,0, NFS_FHSIZE);
|
|
memcpy(res, &fh.fh_base, fh.fh_size);
|
|
err = NFS_FHSIZE;
|
|
}
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* write_unlock_ip - Release all locks used by a client
|
|
*
|
|
* Experimental.
|
|
*
|
|
* Input:
|
|
* buf: '\n'-terminated C string containing a
|
|
* presentation format IP address
|
|
* size: length of C string in @buf
|
|
* Output:
|
|
* On success: returns zero if all specified locks were released;
|
|
* returns one if one or more locks were not released
|
|
* On error: return code is negative errno value
|
|
*/
|
|
static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size)
|
|
{
|
|
struct sockaddr_storage address;
|
|
struct sockaddr *sap = (struct sockaddr *)&address;
|
|
size_t salen = sizeof(address);
|
|
char *fo_path;
|
|
|
|
/* sanity check */
|
|
if (size == 0)
|
|
return -EINVAL;
|
|
|
|
if (buf[size-1] != '\n')
|
|
return -EINVAL;
|
|
|
|
fo_path = buf;
|
|
if (qword_get(&buf, fo_path, size) < 0)
|
|
return -EINVAL;
|
|
|
|
if (rpc_pton(fo_path, size, sap, salen) == 0)
|
|
return -EINVAL;
|
|
|
|
return nlmsvc_unlock_all_by_ip(sap);
|
|
}
|
|
|
|
/**
|
|
* write_unlock_fs - Release all locks on a local file system
|
|
*
|
|
* Experimental.
|
|
*
|
|
* Input:
|
|
* buf: '\n'-terminated C string containing the
|
|
* absolute pathname of a local file system
|
|
* size: length of C string in @buf
|
|
* Output:
|
|
* On success: returns zero if all specified locks were released;
|
|
* returns one if one or more locks were not released
|
|
* On error: return code is negative errno value
|
|
*/
|
|
static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size)
|
|
{
|
|
struct path path;
|
|
char *fo_path;
|
|
int error;
|
|
|
|
/* sanity check */
|
|
if (size == 0)
|
|
return -EINVAL;
|
|
|
|
if (buf[size-1] != '\n')
|
|
return -EINVAL;
|
|
|
|
fo_path = buf;
|
|
if (qword_get(&buf, fo_path, size) < 0)
|
|
return -EINVAL;
|
|
|
|
error = kern_path(fo_path, 0, &path);
|
|
if (error)
|
|
return error;
|
|
|
|
/*
|
|
* XXX: Needs better sanity checking. Otherwise we could end up
|
|
* releasing locks on the wrong file system.
|
|
*
|
|
* For example:
|
|
* 1. Does the path refer to a directory?
|
|
* 2. Is that directory a mount point, or
|
|
* 3. Is that directory the root of an exported file system?
|
|
*/
|
|
error = nlmsvc_unlock_all_by_sb(path.mnt->mnt_sb);
|
|
|
|
path_put(&path);
|
|
return error;
|
|
}
|
|
|
|
/**
|
|
* write_filehandle - Get a variable-length NFS file handle by path
|
|
*
|
|
* On input, the buffer contains a '\n'-terminated C string comprised of
|
|
* three alphanumeric words separated by whitespace. The string may
|
|
* contain escape sequences.
|
|
*
|
|
* Input:
|
|
* buf:
|
|
* domain: client domain name
|
|
* path: export pathname
|
|
* maxsize: numeric maximum size of
|
|
* @buf
|
|
* size: length of C string in @buf
|
|
* Output:
|
|
* On success: passed-in buffer filled with '\n'-terminated C
|
|
* string containing a ASCII hex text version
|
|
* of the NFS file handle;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is negative errno value
|
|
*/
|
|
static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
|
|
{
|
|
char *dname, *path;
|
|
int uninitialized_var(maxsize);
|
|
char *mesg = buf;
|
|
int len;
|
|
struct auth_domain *dom;
|
|
struct knfsd_fh fh;
|
|
|
|
if (size == 0)
|
|
return -EINVAL;
|
|
|
|
if (buf[size-1] != '\n')
|
|
return -EINVAL;
|
|
buf[size-1] = 0;
|
|
|
|
dname = mesg;
|
|
len = qword_get(&mesg, dname, size);
|
|
if (len <= 0)
|
|
return -EINVAL;
|
|
|
|
path = dname+len+1;
|
|
len = qword_get(&mesg, path, size);
|
|
if (len <= 0)
|
|
return -EINVAL;
|
|
|
|
len = get_int(&mesg, &maxsize);
|
|
if (len)
|
|
return len;
|
|
|
|
if (maxsize < NFS_FHSIZE)
|
|
return -EINVAL;
|
|
if (maxsize > NFS3_FHSIZE)
|
|
maxsize = NFS3_FHSIZE;
|
|
|
|
if (qword_get(&mesg, mesg, size)>0)
|
|
return -EINVAL;
|
|
|
|
/* we have all the words, they are in buf.. */
|
|
dom = unix_domain_find(dname);
|
|
if (!dom)
|
|
return -ENOMEM;
|
|
|
|
len = exp_rootfh(dom, path, &fh, maxsize);
|
|
auth_domain_put(dom);
|
|
if (len)
|
|
return len;
|
|
|
|
mesg = buf;
|
|
len = SIMPLE_TRANSACTION_LIMIT;
|
|
qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size);
|
|
mesg[-1] = '\n';
|
|
return mesg - buf;
|
|
}
|
|
|
|
/**
|
|
* write_threads - Start NFSD, or report the current number of running threads
|
|
*
|
|
* Input:
|
|
* buf: ignored
|
|
* size: zero
|
|
* Output:
|
|
* On success: passed-in buffer filled with '\n'-terminated C
|
|
* string numeric value representing the number of
|
|
* running NFSD threads;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is zero
|
|
*
|
|
* OR
|
|
*
|
|
* Input:
|
|
* buf: C string containing an unsigned
|
|
* integer value representing the
|
|
* number of NFSD threads to start
|
|
* size: non-zero length of C string in @buf
|
|
* Output:
|
|
* On success: NFS service is started;
|
|
* passed-in buffer filled with '\n'-terminated C
|
|
* string numeric value representing the number of
|
|
* running NFSD threads;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is zero or a negative errno value
|
|
*/
|
|
static ssize_t write_threads(struct file *file, char *buf, size_t size)
|
|
{
|
|
char *mesg = buf;
|
|
int rv;
|
|
if (size > 0) {
|
|
int newthreads;
|
|
rv = get_int(&mesg, &newthreads);
|
|
if (rv)
|
|
return rv;
|
|
if (newthreads < 0)
|
|
return -EINVAL;
|
|
rv = nfsd_svc(NFS_PORT, newthreads);
|
|
if (rv < 0)
|
|
return rv;
|
|
} else
|
|
rv = nfsd_nrthreads();
|
|
|
|
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv);
|
|
}
|
|
|
|
/**
|
|
* write_pool_threads - Set or report the current number of threads per pool
|
|
*
|
|
* Input:
|
|
* buf: ignored
|
|
* size: zero
|
|
*
|
|
* OR
|
|
*
|
|
* Input:
|
|
* buf: C string containing whitespace-
|
|
* separated unsigned integer values
|
|
* representing the number of NFSD
|
|
* threads to start in each pool
|
|
* size: non-zero length of C string in @buf
|
|
* Output:
|
|
* On success: passed-in buffer filled with '\n'-terminated C
|
|
* string containing integer values representing the
|
|
* number of NFSD threads in each pool;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is zero or a negative errno value
|
|
*/
|
|
static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
|
|
{
|
|
/* if size > 0, look for an array of number of threads per node
|
|
* and apply them then write out number of threads per node as reply
|
|
*/
|
|
char *mesg = buf;
|
|
int i;
|
|
int rv;
|
|
int len;
|
|
int npools;
|
|
int *nthreads;
|
|
|
|
mutex_lock(&nfsd_mutex);
|
|
npools = nfsd_nrpools();
|
|
if (npools == 0) {
|
|
/*
|
|
* NFS is shut down. The admin can start it by
|
|
* writing to the threads file but NOT the pool_threads
|
|
* file, sorry. Report zero threads.
|
|
*/
|
|
mutex_unlock(&nfsd_mutex);
|
|
strcpy(buf, "0\n");
|
|
return strlen(buf);
|
|
}
|
|
|
|
nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL);
|
|
rv = -ENOMEM;
|
|
if (nthreads == NULL)
|
|
goto out_free;
|
|
|
|
if (size > 0) {
|
|
for (i = 0; i < npools; i++) {
|
|
rv = get_int(&mesg, &nthreads[i]);
|
|
if (rv == -ENOENT)
|
|
break; /* fewer numbers than pools */
|
|
if (rv)
|
|
goto out_free; /* syntax error */
|
|
rv = -EINVAL;
|
|
if (nthreads[i] < 0)
|
|
goto out_free;
|
|
}
|
|
rv = nfsd_set_nrthreads(i, nthreads);
|
|
if (rv)
|
|
goto out_free;
|
|
}
|
|
|
|
rv = nfsd_get_nrthreads(npools, nthreads);
|
|
if (rv)
|
|
goto out_free;
|
|
|
|
mesg = buf;
|
|
size = SIMPLE_TRANSACTION_LIMIT;
|
|
for (i = 0; i < npools && size > 0; i++) {
|
|
snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' '));
|
|
len = strlen(mesg);
|
|
size -= len;
|
|
mesg += len;
|
|
}
|
|
rv = mesg - buf;
|
|
out_free:
|
|
kfree(nthreads);
|
|
mutex_unlock(&nfsd_mutex);
|
|
return rv;
|
|
}
|
|
|
|
static ssize_t __write_versions(struct file *file, char *buf, size_t size)
|
|
{
|
|
char *mesg = buf;
|
|
char *vers, *minorp, sign;
|
|
int len, num, remaining;
|
|
unsigned minor;
|
|
ssize_t tlen = 0;
|
|
char *sep;
|
|
|
|
if (size>0) {
|
|
if (nfsd_serv)
|
|
/* Cannot change versions without updating
|
|
* nfsd_serv->sv_xdrsize, and reallocing
|
|
* rq_argp and rq_resp
|
|
*/
|
|
return -EBUSY;
|
|
if (buf[size-1] != '\n')
|
|
return -EINVAL;
|
|
buf[size-1] = 0;
|
|
|
|
vers = mesg;
|
|
len = qword_get(&mesg, vers, size);
|
|
if (len <= 0) return -EINVAL;
|
|
do {
|
|
sign = *vers;
|
|
if (sign == '+' || sign == '-')
|
|
num = simple_strtol((vers+1), &minorp, 0);
|
|
else
|
|
num = simple_strtol(vers, &minorp, 0);
|
|
if (*minorp == '.') {
|
|
if (num < 4)
|
|
return -EINVAL;
|
|
minor = simple_strtoul(minorp+1, NULL, 0);
|
|
if (minor == 0)
|
|
return -EINVAL;
|
|
if (nfsd_minorversion(minor, sign == '-' ?
|
|
NFSD_CLEAR : NFSD_SET) < 0)
|
|
return -EINVAL;
|
|
goto next;
|
|
}
|
|
switch(num) {
|
|
case 2:
|
|
case 3:
|
|
case 4:
|
|
nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
next:
|
|
vers += len + 1;
|
|
} while ((len = qword_get(&mesg, vers, size)) > 0);
|
|
/* If all get turned off, turn them back on, as
|
|
* having no versions is BAD
|
|
*/
|
|
nfsd_reset_versions();
|
|
}
|
|
|
|
/* Now write current state into reply buffer */
|
|
len = 0;
|
|
sep = "";
|
|
remaining = SIMPLE_TRANSACTION_LIMIT;
|
|
for (num=2 ; num <= 4 ; num++)
|
|
if (nfsd_vers(num, NFSD_AVAIL)) {
|
|
len = snprintf(buf, remaining, "%s%c%d", sep,
|
|
nfsd_vers(num, NFSD_TEST)?'+':'-',
|
|
num);
|
|
sep = " ";
|
|
|
|
if (len > remaining)
|
|
break;
|
|
remaining -= len;
|
|
buf += len;
|
|
tlen += len;
|
|
}
|
|
if (nfsd_vers(4, NFSD_AVAIL))
|
|
for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION;
|
|
minor++) {
|
|
len = snprintf(buf, remaining, " %c4.%u",
|
|
(nfsd_vers(4, NFSD_TEST) &&
|
|
nfsd_minorversion(minor, NFSD_TEST)) ?
|
|
'+' : '-',
|
|
minor);
|
|
|
|
if (len > remaining)
|
|
break;
|
|
remaining -= len;
|
|
buf += len;
|
|
tlen += len;
|
|
}
|
|
|
|
len = snprintf(buf, remaining, "\n");
|
|
if (len > remaining)
|
|
return -EINVAL;
|
|
return tlen + len;
|
|
}
|
|
|
|
/**
|
|
* write_versions - Set or report the available NFS protocol versions
|
|
*
|
|
* Input:
|
|
* buf: ignored
|
|
* size: zero
|
|
* Output:
|
|
* On success: passed-in buffer filled with '\n'-terminated C
|
|
* string containing positive or negative integer
|
|
* values representing the current status of each
|
|
* protocol version;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is zero or a negative errno value
|
|
*
|
|
* OR
|
|
*
|
|
* Input:
|
|
* buf: C string containing whitespace-
|
|
* separated positive or negative
|
|
* integer values representing NFS
|
|
* protocol versions to enable ("+n")
|
|
* or disable ("-n")
|
|
* size: non-zero length of C string in @buf
|
|
* Output:
|
|
* On success: status of zero or more protocol versions has
|
|
* been updated; passed-in buffer filled with
|
|
* '\n'-terminated C string containing positive
|
|
* or negative integer values representing the
|
|
* current status of each protocol version;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is zero or a negative errno value
|
|
*/
|
|
static ssize_t write_versions(struct file *file, char *buf, size_t size)
|
|
{
|
|
ssize_t rv;
|
|
|
|
mutex_lock(&nfsd_mutex);
|
|
rv = __write_versions(file, buf, size);
|
|
mutex_unlock(&nfsd_mutex);
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* Zero-length write. Return a list of NFSD's current listener
|
|
* transports.
|
|
*/
|
|
static ssize_t __write_ports_names(char *buf)
|
|
{
|
|
if (nfsd_serv == NULL)
|
|
return 0;
|
|
return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT);
|
|
}
|
|
|
|
/*
|
|
* A single 'fd' number was written, in which case it must be for
|
|
* a socket of a supported family/protocol, and we use it as an
|
|
* nfsd listener.
|
|
*/
|
|
static ssize_t __write_ports_addfd(char *buf)
|
|
{
|
|
char *mesg = buf;
|
|
int fd, err;
|
|
|
|
err = get_int(&mesg, &fd);
|
|
if (err != 0 || fd < 0)
|
|
return -EINVAL;
|
|
|
|
err = nfsd_create_serv();
|
|
if (err != 0)
|
|
return err;
|
|
|
|
err = lockd_up();
|
|
if (err != 0)
|
|
goto out;
|
|
|
|
err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT);
|
|
if (err < 0)
|
|
lockd_down();
|
|
|
|
out:
|
|
/* Decrease the count, but don't shut down the service */
|
|
nfsd_serv->sv_nrthreads--;
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* A '-' followed by the 'name' of a socket means we close the socket.
|
|
*/
|
|
static ssize_t __write_ports_delfd(char *buf)
|
|
{
|
|
char *toclose;
|
|
int len = 0;
|
|
|
|
toclose = kstrdup(buf + 1, GFP_KERNEL);
|
|
if (toclose == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (nfsd_serv != NULL)
|
|
len = svc_sock_names(nfsd_serv, buf,
|
|
SIMPLE_TRANSACTION_LIMIT, toclose);
|
|
if (len >= 0)
|
|
lockd_down();
|
|
|
|
kfree(toclose);
|
|
return len;
|
|
}
|
|
|
|
/*
|
|
* A transport listener is added by writing it's transport name and
|
|
* a port number.
|
|
*/
|
|
static ssize_t __write_ports_addxprt(char *buf)
|
|
{
|
|
char transport[16];
|
|
int port, err;
|
|
|
|
if (sscanf(buf, "%15s %4u", transport, &port) != 2)
|
|
return -EINVAL;
|
|
|
|
if (port < 1 || port > USHORT_MAX)
|
|
return -EINVAL;
|
|
|
|
err = nfsd_create_serv();
|
|
if (err != 0)
|
|
return err;
|
|
|
|
err = svc_create_xprt(nfsd_serv, transport,
|
|
PF_INET, port, SVC_SOCK_ANONYMOUS);
|
|
if (err < 0) {
|
|
/* Give a reasonable perror msg for bad transport string */
|
|
if (err == -ENOENT)
|
|
err = -EPROTONOSUPPORT;
|
|
return err;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
struct svc_xprt *xprt;
|
|
char transport[16];
|
|
int port;
|
|
|
|
if (sscanf(&buf[1], "%15s %4u", transport, &port) != 2)
|
|
return -EINVAL;
|
|
|
|
if (port < 1 || port > USHORT_MAX || nfsd_serv == NULL)
|
|
return -EINVAL;
|
|
|
|
xprt = svc_find_xprt(nfsd_serv, transport, AF_UNSPEC, port);
|
|
if (xprt == NULL)
|
|
return -ENOTCONN;
|
|
|
|
svc_close_xprt(xprt);
|
|
svc_xprt_put(xprt);
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t __write_ports(struct file *file, char *buf, size_t size)
|
|
{
|
|
if (size == 0)
|
|
return __write_ports_names(buf);
|
|
|
|
if (isdigit(buf[0]))
|
|
return __write_ports_addfd(buf);
|
|
|
|
if (buf[0] == '-' && isdigit(buf[1]))
|
|
return __write_ports_delfd(buf);
|
|
|
|
if (isalpha(buf[0]))
|
|
return __write_ports_addxprt(buf);
|
|
|
|
if (buf[0] == '-' && isalpha(buf[1]))
|
|
return __write_ports_delxprt(buf);
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* write_ports - Pass a socket file descriptor or transport name to listen on
|
|
*
|
|
* Input:
|
|
* buf: ignored
|
|
* size: zero
|
|
* Output:
|
|
* On success: passed-in buffer filled with a '\n'-terminated C
|
|
* string containing a whitespace-separated list of
|
|
* named NFSD listeners;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is zero or a negative errno value
|
|
*
|
|
* OR
|
|
*
|
|
* Input:
|
|
* buf: C string containing an unsigned
|
|
* integer value representing a bound
|
|
* but unconnected socket that is to be
|
|
* used as an NFSD listener; listen(3)
|
|
* must be called for a SOCK_STREAM
|
|
* socket, otherwise it is ignored
|
|
* size: non-zero length of C string in @buf
|
|
* Output:
|
|
* On success: NFS service is started;
|
|
* passed-in buffer filled with a '\n'-terminated C
|
|
* string containing a unique alphanumeric name of
|
|
* the listener;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is a negative errno value
|
|
*
|
|
* OR
|
|
*
|
|
* Input:
|
|
* buf: C string containing a "-" followed
|
|
* by an integer value representing a
|
|
* previously passed in socket file
|
|
* descriptor
|
|
* size: non-zero length of C string in @buf
|
|
* Output:
|
|
* On success: NFS service no longer listens on that socket;
|
|
* passed-in buffer filled with a '\n'-terminated C
|
|
* string containing a unique name of the listener;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is a negative errno value
|
|
*
|
|
* OR
|
|
*
|
|
* Input:
|
|
* buf: C string containing a transport
|
|
* name and an unsigned integer value
|
|
* representing the port to listen on,
|
|
* separated by whitespace
|
|
* size: non-zero length of C string in @buf
|
|
* Output:
|
|
* On success: returns zero; NFS service is started
|
|
* On error: return code is a negative errno value
|
|
*
|
|
* OR
|
|
*
|
|
* Input:
|
|
* buf: C string containing a "-" followed
|
|
* by a transport name and an unsigned
|
|
* integer value representing the port
|
|
* to listen on, separated by whitespace
|
|
* size: non-zero length of C string in @buf
|
|
* Output:
|
|
* On success: returns zero; NFS service no longer listens
|
|
* on that transport
|
|
* On error: return code is a negative errno value
|
|
*/
|
|
static ssize_t write_ports(struct file *file, char *buf, size_t size)
|
|
{
|
|
ssize_t rv;
|
|
|
|
mutex_lock(&nfsd_mutex);
|
|
rv = __write_ports(file, buf, size);
|
|
mutex_unlock(&nfsd_mutex);
|
|
return rv;
|
|
}
|
|
|
|
|
|
int nfsd_max_blksize;
|
|
|
|
/**
|
|
* write_maxblksize - Set or report the current NFS blksize
|
|
*
|
|
* Input:
|
|
* buf: ignored
|
|
* size: zero
|
|
*
|
|
* OR
|
|
*
|
|
* Input:
|
|
* buf: C string containing an unsigned
|
|
* integer value representing the new
|
|
* NFS blksize
|
|
* size: non-zero length of C string in @buf
|
|
* Output:
|
|
* On success: passed-in buffer filled with '\n'-terminated C string
|
|
* containing numeric value of the current NFS blksize
|
|
* setting;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is zero or a negative errno value
|
|
*/
|
|
static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
|
|
{
|
|
char *mesg = buf;
|
|
if (size > 0) {
|
|
int bsize;
|
|
int rv = get_int(&mesg, &bsize);
|
|
if (rv)
|
|
return rv;
|
|
/* force bsize into allowed range and
|
|
* required alignment.
|
|
*/
|
|
if (bsize < 1024)
|
|
bsize = 1024;
|
|
if (bsize > NFSSVC_MAXBLKSIZE)
|
|
bsize = NFSSVC_MAXBLKSIZE;
|
|
bsize &= ~(1024-1);
|
|
mutex_lock(&nfsd_mutex);
|
|
if (nfsd_serv && nfsd_serv->sv_nrthreads) {
|
|
mutex_unlock(&nfsd_mutex);
|
|
return -EBUSY;
|
|
}
|
|
nfsd_max_blksize = bsize;
|
|
mutex_unlock(&nfsd_mutex);
|
|
}
|
|
|
|
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
|
|
nfsd_max_blksize);
|
|
}
|
|
|
|
#ifdef CONFIG_NFSD_V4
|
|
extern time_t nfs4_leasetime(void);
|
|
|
|
static ssize_t __write_leasetime(struct file *file, char *buf, size_t size)
|
|
{
|
|
/* if size > 10 seconds, call
|
|
* nfs4_reset_lease() then write out the new lease (seconds) as reply
|
|
*/
|
|
char *mesg = buf;
|
|
int rv, lease;
|
|
|
|
if (size > 0) {
|
|
if (nfsd_serv)
|
|
return -EBUSY;
|
|
rv = get_int(&mesg, &lease);
|
|
if (rv)
|
|
return rv;
|
|
if (lease < 10 || lease > 3600)
|
|
return -EINVAL;
|
|
nfs4_reset_lease(lease);
|
|
}
|
|
|
|
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n",
|
|
nfs4_lease_time());
|
|
}
|
|
|
|
/**
|
|
* write_leasetime - Set or report the current NFSv4 lease time
|
|
*
|
|
* Input:
|
|
* buf: ignored
|
|
* size: zero
|
|
*
|
|
* OR
|
|
*
|
|
* Input:
|
|
* buf: C string containing an unsigned
|
|
* integer value representing the new
|
|
* NFSv4 lease expiry time
|
|
* size: non-zero length of C string in @buf
|
|
* Output:
|
|
* On success: passed-in buffer filled with '\n'-terminated C
|
|
* string containing unsigned integer value of the
|
|
* current lease expiry time;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is zero or a negative errno value
|
|
*/
|
|
static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
|
|
{
|
|
ssize_t rv;
|
|
|
|
mutex_lock(&nfsd_mutex);
|
|
rv = __write_leasetime(file, buf, size);
|
|
mutex_unlock(&nfsd_mutex);
|
|
return rv;
|
|
}
|
|
|
|
extern char *nfs4_recoverydir(void);
|
|
|
|
static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
|
|
{
|
|
char *mesg = buf;
|
|
char *recdir;
|
|
int len, status;
|
|
|
|
if (size > 0) {
|
|
if (nfsd_serv)
|
|
return -EBUSY;
|
|
if (size > PATH_MAX || buf[size-1] != '\n')
|
|
return -EINVAL;
|
|
buf[size-1] = 0;
|
|
|
|
recdir = mesg;
|
|
len = qword_get(&mesg, recdir, size);
|
|
if (len <= 0)
|
|
return -EINVAL;
|
|
|
|
status = nfs4_reset_recoverydir(recdir);
|
|
}
|
|
|
|
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
|
|
nfs4_recoverydir());
|
|
}
|
|
|
|
/**
|
|
* write_recoverydir - Set or report the pathname of the recovery directory
|
|
*
|
|
* Input:
|
|
* buf: ignored
|
|
* size: zero
|
|
*
|
|
* OR
|
|
*
|
|
* Input:
|
|
* buf: C string containing the pathname
|
|
* of the directory on a local file
|
|
* system containing permanent NFSv4
|
|
* recovery data
|
|
* size: non-zero length of C string in @buf
|
|
* Output:
|
|
* On success: passed-in buffer filled with '\n'-terminated C string
|
|
* containing the current recovery pathname setting;
|
|
* return code is the size in bytes of the string
|
|
* On error: return code is zero or a negative errno value
|
|
*/
|
|
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
|
|
{
|
|
ssize_t rv;
|
|
|
|
mutex_lock(&nfsd_mutex);
|
|
rv = __write_recoverydir(file, buf, size);
|
|
mutex_unlock(&nfsd_mutex);
|
|
return rv;
|
|
}
|
|
|
|
#endif
|
|
|
|
/*----------------------------------------------------------------------------*/
|
|
/*
|
|
* populating the filesystem.
|
|
*/
|
|
|
|
static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
|
|
{
|
|
static struct tree_descr nfsd_files[] = {
|
|
[NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR},
|
|
[NFSD_Add] = {".add", &transaction_ops, S_IWUSR},
|
|
[NFSD_Del] = {".del", &transaction_ops, S_IWUSR},
|
|
[NFSD_Export] = {".export", &transaction_ops, S_IWUSR},
|
|
[NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR},
|
|
[NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR},
|
|
[NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR},
|
|
[NFSD_List] = {"exports", &exports_operations, S_IRUGO},
|
|
[NFSD_FO_UnlockIP] = {"unlock_ip",
|
|
&transaction_ops, S_IWUSR|S_IRUSR},
|
|
[NFSD_FO_UnlockFS] = {"unlock_filesystem",
|
|
&transaction_ops, S_IWUSR|S_IRUSR},
|
|
[NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
|
|
[NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
|
|
[NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR},
|
|
[NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO},
|
|
[NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
|
|
[NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
|
|
[NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
|
|
#ifdef CONFIG_NFSD_V4
|
|
[NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
|
|
[NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
|
|
#endif
|
|
/* last one */ {""}
|
|
};
|
|
return simple_fill_super(sb, 0x6e667364, nfsd_files);
|
|
}
|
|
|
|
static int nfsd_get_sb(struct file_system_type *fs_type,
|
|
int flags, const char *dev_name, void *data, struct vfsmount *mnt)
|
|
{
|
|
return get_sb_single(fs_type, flags, data, nfsd_fill_super, mnt);
|
|
}
|
|
|
|
static struct file_system_type nfsd_fs_type = {
|
|
.owner = THIS_MODULE,
|
|
.name = "nfsd",
|
|
.get_sb = nfsd_get_sb,
|
|
.kill_sb = kill_litter_super,
|
|
};
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
static int create_proc_exports_entry(void)
|
|
{
|
|
struct proc_dir_entry *entry;
|
|
|
|
entry = proc_mkdir("fs/nfs", NULL);
|
|
if (!entry)
|
|
return -ENOMEM;
|
|
entry = proc_create("exports", 0, entry, &exports_operations);
|
|
if (!entry)
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
#else /* CONFIG_PROC_FS */
|
|
static int create_proc_exports_entry(void)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int __init init_nfsd(void)
|
|
{
|
|
int retval;
|
|
printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
|
|
|
|
retval = nfs4_state_init(); /* nfs4 locking state */
|
|
if (retval)
|
|
return retval;
|
|
nfsd_stat_init(); /* Statistics */
|
|
retval = nfsd_reply_cache_init();
|
|
if (retval)
|
|
goto out_free_stat;
|
|
retval = nfsd_export_init();
|
|
if (retval)
|
|
goto out_free_cache;
|
|
nfsd_lockd_init(); /* lockd->nfsd callbacks */
|
|
retval = nfsd_idmap_init();
|
|
if (retval)
|
|
goto out_free_lockd;
|
|
retval = create_proc_exports_entry();
|
|
if (retval)
|
|
goto out_free_idmap;
|
|
retval = register_filesystem(&nfsd_fs_type);
|
|
if (retval)
|
|
goto out_free_all;
|
|
return 0;
|
|
out_free_all:
|
|
remove_proc_entry("fs/nfs/exports", NULL);
|
|
remove_proc_entry("fs/nfs", NULL);
|
|
out_free_idmap:
|
|
nfsd_idmap_shutdown();
|
|
out_free_lockd:
|
|
nfsd_lockd_shutdown();
|
|
nfsd_export_shutdown();
|
|
out_free_cache:
|
|
nfsd_reply_cache_shutdown();
|
|
out_free_stat:
|
|
nfsd_stat_shutdown();
|
|
nfsd4_free_slabs();
|
|
return retval;
|
|
}
|
|
|
|
static void __exit exit_nfsd(void)
|
|
{
|
|
nfsd_export_shutdown();
|
|
nfsd_reply_cache_shutdown();
|
|
remove_proc_entry("fs/nfs/exports", NULL);
|
|
remove_proc_entry("fs/nfs", NULL);
|
|
nfsd_stat_shutdown();
|
|
nfsd_lockd_shutdown();
|
|
nfsd_idmap_shutdown();
|
|
nfsd4_free_slabs();
|
|
unregister_filesystem(&nfsd_fs_type);
|
|
}
|
|
|
|
MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
|
|
MODULE_LICENSE("GPL");
|
|
module_init(init_nfsd)
|
|
module_exit(exit_nfsd)
|