/*
- * linux/fs/nfsd/nfsctl.c
- *
* Syscall interface to knfsd.
*
* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
*/
-#include <linux/module.h>
-
-#include <linux/linkage.h>
-#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/syscalls.h>
-#include <linux/unistd.h>
#include <linux/slab.h>
-#include <linux/proc_fs.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/namei.h>
#include <linux/ctype.h>
-#include <linux/nfs.h>
#include <linux/nfsd_idmap.h>
-#include <linux/lockd/bind.h>
-#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/svcsock.h>
-#include <linux/nfsd/nfsd.h>
-#include <linux/nfsd/cache.h>
-#include <linux/nfsd/xdr.h>
#include <linux/nfsd/syscall.h>
#include <linux/lockd/lockd.h>
+#include <linux/sunrpc/clnt.h>
-#include <asm/uaccess.h>
-#include <net/ipv6.h>
+#include "nfsd.h"
+#include "cache.h"
/*
* We have a single directory with 9 nodes in it.
NFSD_Getfd,
NFSD_Getfs,
NFSD_List,
+ NFSD_Export_features,
NFSD_Fh,
NFSD_FO_UnlockIP,
NFSD_FO_UnlockFS,
*/
#ifdef CONFIG_NFSD_V4
NFSD_Leasetime,
+ NFSD_Gracetime,
NFSD_RecoveryDir,
#endif
};
static ssize_t write_maxblksize(struct file *file, char *buf, size_t size);
#ifdef CONFIG_NFSD_V4
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);
static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
#endif
[NFSD_MaxBlkSize] = write_maxblksize,
#ifdef CONFIG_NFSD_V4
[NFSD_Leasetime] = write_leasetime,
+ [NFSD_Gracetime] = write_gracetime,
[NFSD_RecoveryDir] = write_recoverydir,
#endif
};
.owner = THIS_MODULE,
};
+static int export_features_show(struct seq_file *m, void *v)
+{
+ seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS);
+ return 0;
+}
+
+static int export_features_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, export_features_show, NULL);
+}
+
+static struct file_operations export_features_operations = {
+ .open = export_features_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
extern int nfsd_pool_stats_open(struct inode *inode, struct file *file);
+extern int nfsd_pool_stats_release(struct inode *inode, struct file *file);
-static struct file_operations pool_stats_operations = {
+static const struct file_operations pool_stats_operations = {
.open = nfsd_pool_stats_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release,
+ .release = nfsd_pool_stats_release,
.owner = THIS_MODULE,
};
static ssize_t write_svc(struct file *file, char *buf, size_t size)
{
struct nfsctl_svc *data;
+ int err;
if (size < sizeof(*data))
return -EINVAL;
data = (struct nfsctl_svc*) buf;
- return nfsd_svc(data->svc_port, data->svc_nthreads);
+ err = nfsd_svc(data->svc_port, data->svc_nthreads);
+ if (err < 0)
+ return err;
+ return 0;
}
/**
*
* Input:
* buf: '\n'-terminated C string containing a
- * presentation format IPv4 address
+ * 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
- *
- * Note: Only AF_INET client addresses are passed in
*/
static ssize_t write_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;
+ struct sockaddr_storage address;
+ struct sockaddr *sap = (struct sockaddr *)&address;
+ size_t salen = sizeof(address);
char *fo_path;
/* sanity check */
if (qword_get(&buf, fo_path, size) < 0)
return -EINVAL;
- /* get ipv4 address */
- if (sscanf(fo_path, "%u.%u.%u.%u%c", &b1, &b2, &b3, &b4, &c) != 4)
- return -EINVAL;
- if (b1 > 255 || b2 > 255 || b3 > 255 || b4 > 255)
+ if (rpc_pton(fo_path, size, sap, salen) == 0)
return -EINVAL;
- sin.sin_addr.s_addr = htonl((b1 << 24) | (b2 << 16) | (b3 << 8) | b4);
- return nlmsvc_unlock_all_by_ip((struct sockaddr *)&sin);
+ return nlmsvc_unlock_all_by_ip(sap);
}
/**
if (newthreads < 0)
return -EINVAL;
rv = nfsd_svc(NFS_PORT, newthreads);
- if (rv)
+ if (rv < 0)
return rv;
- }
- sprintf(buf, "%d\n", nfsd_nrthreads());
- return strlen(buf);
+ } else
+ rv = nfsd_nrthreads();
+
+ return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv);
}
/**
size -= len;
mesg += len;
}
-
- mutex_unlock(&nfsd_mutex);
- return (mesg-buf);
-
+ rv = mesg - buf;
out_free:
kfree(nthreads);
mutex_unlock(&nfsd_mutex);
{
char *mesg = buf;
char *vers, *minorp, sign;
- int len, num;
+ int len, num, remaining;
unsigned minor;
ssize_t tlen = 0;
char *sep;
}
next:
vers += len + 1;
- tlen += len;
} 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 += sprintf(buf+len, "%s%c%d", sep,
+ 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 += sprintf(buf+len, " %c4.%u",
+ 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);
- len += sprintf(buf+len, "\n");
- return len;
+
+ if (len > remaining)
+ break;
+ remaining -= len;
+ buf += len;
+ tlen += len;
+ }
+
+ len = snprintf(buf, remaining, "\n");
+ if (len > remaining)
+ return -EINVAL;
+ return tlen + len;
}
/**
static ssize_t __write_ports_addxprt(char *buf)
{
char transport[16];
+ struct svc_xprt *xprt;
int port, err;
if (sscanf(buf, "%15s %4u", transport, &port) != 2)
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;
- }
+ if (err < 0)
+ goto out_err;
+
+ err = svc_create_xprt(nfsd_serv, transport,
+ PF_INET6, port, SVC_SOCK_ANONYMOUS);
+ if (err < 0 && err != -EAFNOSUPPORT)
+ goto out_close;
return 0;
+out_close:
+ xprt = svc_find_xprt(nfsd_serv, transport, PF_INET, port);
+ if (xprt != NULL) {
+ svc_close_xprt(xprt);
+ svc_xprt_put(xprt);
+ }
+out_err:
+ /* Decrease the count, but don't shut down the service */
+ nfsd_serv->sv_nrthreads--;
+ return err;
}
/*
nfsd_max_blksize = bsize;
mutex_unlock(&nfsd_mutex);
}
- return sprintf(buf, "%d\n", nfsd_max_blksize);
+
+ 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)
+static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
{
- /* if size > 10 seconds, call
- * nfs4_reset_lease() then write out the new lease (seconds) as reply
- */
char *mesg = buf;
- int rv, lease;
+ int rv, i;
if (size > 0) {
if (nfsd_serv)
return -EBUSY;
- rv = get_int(&mesg, &lease);
+ rv = get_int(&mesg, &i);
if (rv)
return rv;
- if (lease < 10 || lease > 3600)
+ /*
+ * Some sanity checking. We don't have a reason for
+ * these particular numbers, but problems with the
+ * extremes are:
+ * - Too short: the briefest network outage may
+ * cause clients to lose all their locks. Also,
+ * the frequent polling may be wasteful.
+ * - Too long: do you really want reboot recovery
+ * to take more than an hour? Or to make other
+ * clients wait an hour before being able to
+ * revoke a dead client's locks?
+ */
+ if (i < 10 || i > 3600)
return -EINVAL;
- nfs4_reset_lease(lease);
+ *time = i;
}
- sprintf(buf, "%ld\n", nfs4_lease_time());
- return strlen(buf);
+
+ return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time);
+}
+
+static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
+{
+ ssize_t rv;
+
+ mutex_lock(&nfsd_mutex);
+ rv = __nfsd4_write_time(file, buf, size, time);
+ mutex_unlock(&nfsd_mutex);
+ return rv;
}
/**
*/
static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
{
- ssize_t rv;
+ return nfsd4_write_time(file, buf, size, &nfsd4_lease);
+}
- mutex_lock(&nfsd_mutex);
- rv = __write_leasetime(file, buf, size);
- mutex_unlock(&nfsd_mutex);
- return rv;
+/**
+ * write_gracetime - Set or report current NFSv4 grace period time
+ *
+ * As above, but sets the time of the NFSv4 grace period.
+ *
+ * Note this should never be set to less than the *previous*
+ * lease-period time, but we don't try to enforce this. (In the common
+ * case (a new boot), we don't know what the previous lease time was
+ * anyway.)
+ */
+static ssize_t write_gracetime(struct file *file, char *buf, size_t size)
+{
+ return nfsd4_write_time(file, buf, size, &nfsd4_grace);
}
extern char *nfs4_recoverydir(void);
status = nfs4_reset_recoverydir(recdir);
}
- sprintf(buf, "%s\n", nfs4_recoverydir());
- return strlen(buf);
+
+ return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
+ nfs4_recoverydir());
}
/**
[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_Export_features] = {"export_features",
+ &export_features_operations, S_IRUGO},
[NFSD_FO_UnlockIP] = {"unlock_ip",
&transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_FO_UnlockFS] = {"unlock_filesystem",
[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_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR},
[NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
#endif
/* last one */ {""}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff