#include <linux/time.h>
#include <linux/errno.h>
#include <linux/fs.h>
+#include <linux/namei.h>
#include <linux/fcntl.h>
#include <linux/net.h>
#include <linux/in.h>
#include <linux/seq_file.h>
#include <linux/pagemap.h>
#include <linux/init.h>
+#include <linux/inet.h>
#include <linux/string.h>
#include <linux/smp_lock.h>
#include <linux/ctype.h>
#include <linux/nfsd/cache.h>
#include <linux/nfsd/xdr.h>
#include <linux/nfsd/syscall.h>
+#include <linux/lockd/lockd.h>
#include <asm/uaccess.h>
+#include <net/ipv6.h>
/*
* We have a single directory with 9 nodes in it.
NFSD_Getfs,
NFSD_List,
NFSD_Fh,
+ NFSD_FO_UnlockIP,
+ NFSD_FO_UnlockFS,
NFSD_Threads,
NFSD_Pool_Threads,
NFSD_Versions,
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
#endif
+static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size);
+static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size);
+
static ssize_t (*write_op[])(struct file *, char *, size_t) = {
[NFSD_Svc] = write_svc,
[NFSD_Add] = write_add,
[NFSD_Getfd] = write_getfd,
[NFSD_Getfs] = write_getfs,
[NFSD_Fh] = write_filehandle,
+ [NFSD_FO_UnlockIP] = failover_unlock_ip,
+ [NFSD_FO_UnlockFS] = failover_unlock_fs,
[NFSD_Threads] = write_threads,
[NFSD_Pool_Threads] = write_pool_threads,
[NFSD_Versions] = write_versions,
.release = simple_transaction_release,
};
-extern struct seq_operations nfs_exports_op;
static int exports_open(struct inode *inode, struct file *file)
{
return seq_open(file, &nfs_exports_op);
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
+ .owner = THIS_MODULE,
};
/*----------------------------------------------------------------------------*/
struct auth_domain *clp;
int err = 0;
struct knfsd_fh *res;
+ struct in6_addr in6;
if (size < sizeof(*data))
return -EINVAL;
res = (struct knfsd_fh*)buf;
exp_readlock();
- if (!(clp = auth_unix_lookup(sin->sin_addr)))
+
+ 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, res, data->gd_maxlen);
int err = 0;
struct knfsd_fh fh;
char *res;
+ struct in6_addr in6;
if (size < sizeof(*data))
return -EINVAL;
res = buf;
sin = (struct sockaddr_in *)&data->gd_addr;
exp_readlock();
- if (!(clp = auth_unix_lookup(sin->sin_addr)))
+
+ 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);
return err;
}
+static ssize_t failover_unlock_ip(struct file *file, char *buf, size_t size)
+{
+ struct sockaddr_in sin = {
+ .sin_family = AF_INET,
+ };
+ int b1, b2, b3, b4;
+ char c;
+ 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;
+
+ /* get ipv4 address */
+ if (sscanf(fo_path, NIPQUAD_FMT "%c", &b1, &b2, &b3, &b4, &c) != 4)
+ return -EINVAL;
+ if (b1 > 255 || b2 > 255 || b3 > 255 || b4 > 255)
+ return -EINVAL;
+ sin.sin_addr.s_addr = htonl((b1 << 24) | (b2 << 16) | (b3 << 8) | b4);
+
+ return nlmsvc_unlock_all_by_ip((struct sockaddr *)&sin);
+}
+
+static ssize_t failover_unlock_fs(struct file *file, char *buf, size_t size)
+{
+ struct nameidata nd;
+ 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 = path_lookup(fo_path, 0, &nd);
+ if (error)
+ return error;
+
+ error = nlmsvc_unlock_all_by_sb(nd.path.mnt->mnt_sb);
+
+ path_put(&nd.path);
+ return error;
+}
+
static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
{
/* request is:
struct auth_domain *dom;
struct knfsd_fh fh;
+ if (size == 0)
+ return -EINVAL;
+
if (buf[size-1] != '\n')
return -EINVAL;
buf[size-1] = 0;
return mesg - buf;
}
-extern int nfsd_nrthreads(void);
-
static ssize_t write_threads(struct file *file, char *buf, size_t size)
{
/* if size > 0, look for a number of threads and call nfsd_svc
return strlen(buf);
}
-extern int nfsd_nrpools(void);
-extern int nfsd_get_nrthreads(int n, int *);
-extern int nfsd_set_nrthreads(int n, int *);
-
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
int i;
int rv;
int len;
- int npools = nfsd_nrpools();
+ 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)
- return -ENOMEM;
+ goto out_free;
if (size > 0) {
for (i = 0; i < npools; i++) {
mesg += len;
}
+ mutex_unlock(&nfsd_mutex);
return (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)
+static ssize_t __write_versions(struct file *file, char *buf, size_t size)
{
/*
* Format:
return len;
}
-static ssize_t write_ports(struct file *file, char *buf, size_t size)
+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;
+}
+
+static ssize_t __write_ports(struct file *file, char *buf, size_t size)
{
if (size == 0) {
int len = 0;
- lock_kernel();
+
if (nfsd_serv)
- len = svc_sock_names(buf, nfsd_serv, NULL);
- unlock_kernel();
+ len = svc_xprt_names(nfsd_serv, buf, 0);
return len;
}
/* Either a single 'fd' number is written, in which
return -EINVAL;
err = nfsd_create_serv();
if (!err) {
- int proto = 0;
- err = svc_addsock(nfsd_serv, fd, buf, &proto);
+ err = svc_addsock(nfsd_serv, fd, buf);
if (err >= 0) {
- err = lockd_up(proto);
+ err = lockd_up();
if (err < 0)
svc_sock_names(buf+strlen(buf)+1, nfsd_serv, buf);
}
/* Decrease the count, but don't shutdown the
* the service
*/
- lock_kernel();
nfsd_serv->sv_nrthreads--;
- unlock_kernel();
}
return err < 0 ? err : 0;
}
- if (buf[0] == '-') {
+ if (buf[0] == '-' && isdigit(buf[1])) {
char *toclose = kstrdup(buf+1, GFP_KERNEL);
int len = 0;
if (!toclose)
return -ENOMEM;
- lock_kernel();
if (nfsd_serv)
len = svc_sock_names(buf, nfsd_serv, toclose);
- unlock_kernel();
if (len >= 0)
lockd_down();
kfree(toclose);
return len;
}
+ /*
+ * Add a transport listener by writing it's transport name
+ */
+ if (isalpha(buf[0])) {
+ int err;
+ char transport[16];
+ int port;
+ if (sscanf(buf, "%15s %4d", transport, &port) == 2) {
+ err = nfsd_create_serv();
+ if (!err) {
+ err = svc_create_xprt(nfsd_serv,
+ transport, port,
+ SVC_SOCK_ANONYMOUS);
+ if (err == -ENOENT)
+ /* Give a reasonable perror msg for
+ * bad transport string */
+ err = -EPROTONOSUPPORT;
+ }
+ return err < 0 ? err : 0;
+ }
+ }
+ /*
+ * Remove a transport by writing it's transport name and port number
+ */
+ if (buf[0] == '-' && isalpha(buf[1])) {
+ struct svc_xprt *xprt;
+ int err = -EINVAL;
+ char transport[16];
+ int port;
+ if (sscanf(&buf[1], "%15s %4d", transport, &port) == 2) {
+ if (port == 0)
+ return -EINVAL;
+ if (nfsd_serv) {
+ xprt = svc_find_xprt(nfsd_serv, transport,
+ AF_UNSPEC, port);
+ if (xprt) {
+ svc_close_xprt(xprt);
+ svc_xprt_put(xprt);
+ err = 0;
+ } else
+ err = -ENOTCONN;
+ }
+ return err < 0 ? err : 0;
+ }
+ }
return -EINVAL;
}
+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;
static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
if (bsize > NFSSVC_MAXBLKSIZE)
bsize = NFSSVC_MAXBLKSIZE;
bsize &= ~(1024-1);
- lock_kernel();
+ mutex_lock(&nfsd_mutex);
if (nfsd_serv && nfsd_serv->sv_nrthreads) {
- unlock_kernel();
+ mutex_unlock(&nfsd_mutex);
return -EBUSY;
}
nfsd_max_blksize = bsize;
- unlock_kernel();
+ mutex_unlock(&nfsd_mutex);
}
return sprintf(buf, "%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)
+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;
+ int rv, lease;
if (size > 0) {
- int lease;
+ if (nfsd_serv)
+ return -EBUSY;
rv = get_int(&mesg, &lease);
if (rv)
return rv;
return strlen(buf);
}
-static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
+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 > PATH_MAX || buf[size-1] != '\n')
- return -EINVAL;
- buf[size-1] = 0;
+ 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;
+ recdir = mesg;
+ len = qword_get(&mesg, recdir, size);
+ if (len <= 0)
+ return -EINVAL;
- status = nfs4_reset_recoverydir(recdir);
+ status = nfs4_reset_recoverydir(recdir);
+ }
+ sprintf(buf, "%s\n", nfs4_recoverydir());
return strlen(buf);
}
+
+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
/*----------------------------------------------------------------------------*/
[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},
.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;
retval = nfsd_reply_cache_init();
if (retval)
goto out_free_stat;
- nfsd_export_init(); /* Exports table */
+ retval = nfsd_export_init();
+ if (retval)
+ goto out_free_cache;
nfsd_lockd_init(); /* lockd->nfsd callbacks */
- nfsd_idmap_init(); /* Name to ID mapping */
- if (proc_mkdir("fs/nfs", NULL)) {
- struct proc_dir_entry *entry;
- entry = create_proc_entry("fs/nfs/exports", 0, NULL);
- if (entry)
- entry->proc_fops = &exports_operations;
- }
+ 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:
- nfsd_idmap_shutdown();
- nfsd_export_shutdown();
- nfsd_reply_cache_shutdown();
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();
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff